Patent Application
20180245329
The present application relates to the technical field of structural engineering, in particular a novel prefabricated structural system and an assembling method thereof. More specifically, the present application relates to a prefabricated structural system and assembly method thereof adopts a tenon-and-mortise-like configuration as a connection for joint and can be used for steel structures, reinforced concrete structures and timber structures.
A steel structure may contain main structural members, such as columns, main beams, secondary beams and bracings, connected as an integrated structure via connecting joints.
At present, the most commonly used method for connecting joints include the use of a high strength bolt connection and welding. Generally, in a steel fabrication factory, steel members (such as, beams and columns) and connecting plates are prefabricated, the connecting plates and stiffener plates are welded, and bolt holes are drilled in advance at locations where a bolt connection is needed. Then, the prefabricated members are transported to the construction site, hoisted to proper position and subsequently connected by using high strength bolts or welding.
The above-described methods for connecting joints may suffer the following deficiencies:
1) When using the high strength bolt connection method, each joint may need dozens or even hundreds of bolt holes on the members and connecting plates, causing significant increase in the time and cost of processing.
2) Errors usually occur since components are not mass-produced in the fabrication factory. As a result, it can be difficult to connect components due to a composition of prefabrication errors caused by different components and production processes.
3) After the steel members are transported to the construction site and hoisted in place when connected by bolts, manual fixing for the bolts are required. For fixing each bolt, three working procedures may be needed: that is, temporary fixing of the bolt, an initial screwing and final screwing of the bolt, which greatly increases on-site workload and cost.
4) When connected by onsite welding, generally a pre-heating process needs to be performed prior to welding, which not only increases the on-site workload and cost but also easily affected by welder's experience and proficiency, the welding procedure and welding environment such as weather condition and welding position. Thus, this makes it difficult to ensure a good quality for on-site welding.
To address at least one of the above disadvantages of the prior technology, the present application provides a prefabricated structural system and assembling method thereof adopting a tenon-and-mortise-like configuration as a connection for steel structure joints. In addition to steel structural construction, the pre-fabricated structural system and the assembling method thereof may be applied to reinforced concrete structures and timber structures.
One aspect of the application provides a prefabricated structural system, which may include a plurality of steel structure joints and related members. The steel structure joints and related members further includes: a beam-column connecting sleeve, including a first box-shaped steel tube and first C-shaped sleeves extending outward from and perpendicular to outer surfaces of the first box-shaped steel tube, wherein the first C-shaped sleeve is provided with first wedge shaped recesses at ends of upper and lower flanges thereof; a column having a column connecting end inserted into the first box-shaped steel tube; main beams having a main beam connecting end inserted into the first C-shaped sleeve; and main beam fixing steel plates provided with first wedge shaped protrusions that are tenon-mortise-jointed with the first wedge shaped recesses of the first C-shaped sleeve on both sides of the fixing steel plate.
In some alternative embodiments, the steel structure joints and related members may further include: a main beam-secondary beam connecting sleeve including a second box-shaped steel tube and steel connecting plates extending outward from and perpendicular to sides of the second box-shaped steel tube, wherein the steel connecting plate is provided with dovetail-shaped recesses inclined inwardly at the far end from the second box-shaped steel tube; and secondary beams including at both ends thereof dovetail-shaped protrusions that are tenon-mortise-jointed with the dovetail-shaped recesses of the steel connecting plate.
In some alternative embodiments, the steel structure joints and related members may further include: a main beam-secondary beam connecting sleeve including a second box-shaped steel tube and a second C-shaped sleeve extending outward from and perpendicular to outer surfaces of the second box-shaped steel tube, wherein the second C-shaped sleeve is provided with second wedge shaped recesses at ends of the upper and lower flanges; secondary beams having a secondary beam connecting end inserted into the second C-shaped sleeve; a secondary beam fixing steel plate provided with a second wedge shaped protrusion that is tenon-mortise-jointed with the second wedge shaped recess of the second C-shaped sleeve at both sides.
In some alternative embodiments, a restraining member may be installed on an upper surface of the main beam, the restraining member may be positioned at an intersection between the upper flange of the main beam and the both sides of the main beam-secondary beam connecting sleeve so as to fix the main beam-secondary beam connecting sleeve.
In some alternative embodiments, the restraining member may be a shear stud welded on the upper surface of the main beam.
In some alternative embodiments, the first C-shaped sleeve may be provided with a restraining groove on a bottom surface thereof and a restraining protrusion matched with the restraining groove may be provided at the bottom of the lower flange of the main beam connecting end.
In some alternative embodiments, protruding teeth may be provided at an inner surface of the first box-shaped steel tube, matching grooves corresponding to the protruding teeth may be provided at an outer surface of a column connecting end and the grooves may extend to an end surface of the column connecting end.
In some alternative embodiments, an inner horizontal stiffener may be provided within the first box-shaped steel tube, a surface of the inner horizontal stiffener being in contact with an end surface of a column connecting end.
In some alternative embodiments, the cross section of the column may be box-shaped, H-shaped or circular.
In some alternative embodiments, the cross section of the main beam may be H-shaped or box-shaped.
In some alternative embodiments, the fabricated structural system may further include a steel adhesive applied between connecting surfaces of at least one of the connecting ends.
Another aspect of the application provides a method of assembling a prefabricated structural system, including: fixing a column connecting end; connecting, from an upper end of the column, a first box-shaped steel tube of a beam-column connecting sleeve onto a column connecting end of the column; inserting the connecting end of a main beam into a first C-shaped sleeve of the beam-column connecting sleeve extending outward from and perpendicular to an outer side of the first box-shaped steel tube; and inserting a main beam fixing steel plate into the C-shaped sleeve such that a tenon-mortise joint is formed between first wedge shaped recesses provided at ends of upper and lower flanges of the first C-shaped sleeve and first wedge shaped protrusions provided at both sides of the main beam fixing steel plate, thereby restraining the main beam connecting end.
In some alternative embodiments, the method may further include: connecting a main beam-secondary beam connecting sleeve onto the main beam before inserting the main beam connecting end into the first C-shaped sleeve, and fixing the main beam-secondary beam connecting sleeve after inserting a main beam fixing steel plate into the first C-shaped sleeve; and installing a secondary beam into the main beam-secondary beam connecting sleeve.
In some alternative embodiments, installing the secondary beam into the main beam-secondary beam connecting sleeve may include: pushing the secondary beam from an upper side of the secondary beam into a steel connecting plate extending outward from and perpendicular to the second box-shaped steel tube of the main beam-secondary beam connecting sleeve, such that a tenon-mortise jointing is formed between dovetail-shaped recesses inclined inwardly at the end of the steel connecting plate and dovetail-shaped protrusions provided at the end of the secondary beam.
In some alternative embodiments, installing the secondary beam into the main beam-secondary beam connecting sleeve may include: inserting a secondary beam connecting end of the secondary beam into a second C-shaped sleeve extending outward from and perpendicular to the second box-shaped steel tube of the main beam-secondary beam connecting sleeve; and inserting a secondary beam fixing steel plate into the second C-shaped sleeve such that a tenon-mortise jointing is formed between second wedge shaped recesses provided at ends of the upper and lower flanges of the second C-shaped sleeve and second wedge shaped protrusions at both sides of the secondary beam fixing steel plate, thereby restraining the secondary beam connecting end.
In some alternative embodiments, fixing the main beam-secondary beam connecting sleeve may include: welding shear studs on an upper surface of the main beam such that the shear studs are positioned at an intersection of an upper flange of the main beam and both sides of the main beam-secondary beam connecting sleeve so as to fix the main beam-secondary beam connecting sleeve.
In some alternative embodiments, inserting the main beam connecting end into the first C-shaped sleeve may include: inserting the main beam connecting end of the main beam into the first C-shaped sleeve of the beam-column connecting sleeve laterally from the side of the main beam such that a restraining protrusion provided at bottom of the lower flange of the main beam connecting end fits into a restraining groove provided at bottom of the first C-shaped sleeve.
In some alternative embodiments, connecting the first box-shaped steel tube onto the column connecting end may include: connecting, from an upper side of the column, the first box-shaped steel tube of the beam-column connecting sleeve onto the column connecting end of the column, such that protruding teeth provided on an inner surface of the first box-shaped steel tube are engaged with grooves provided on an outer surface of the column connecting end.
In some alternative embodiments, connecting the first box-shaped steel tube onto the column connecting end may include: connecting, from a top side of the column, the first box-shaped steel tube of the beam-column connecting sleeve onto the column connecting end of the column, such that an end surface of the column connecting end comes into contact with a surface of the inner horizontal stiffener within the first box-shaped steel tube.
In some alternative embodiments, the method of assembly may further include: applying steel adhesive between connecting surfaces of at least one of the connecting ends.
In some alternative embodiments, the method of assembly may further include: inserting, from an upper side of the beam-column connecting sleeve, a connecting end of another column into the beam-column connecting sleeve, so as to repeat the installation process.
In addition to the steel structural construction, the prefabricated structural system and the assembling method thereof according to the present application may be further applied to reinforced concrete structures and timber structures.
The application may be suitable for multi-story and high-rise buildings for residential, school, office or hotel etc. and has the following advantages:
The size of the entire completed connecting sleeve is approximately 1 meter square and is light weight, and the various components of the connecting sleeve have even smaller size. This would facilitate in precision during factory fabrication, thus realizing mass and standardized production while also ensuring fabrication quality.
Given the connecting sleeve is small in size and is light weight, it is easier to transport and hoist. Therefore, deformation caused by damage, often occurring during transport or hoisting, may be avoided.
The procedures for fabricating the columns, main beams and secondary beams, and non-structural columns and non-structural beams may be simplified greatly, which shortens fabrication time and ensure fabrication quality.
When installed on site, a no-bolt and no-welding prefabricated structural system can be fully realized by using the above mentioned connecting sleeve and the pre-fabricated steel members. Therefore, it is possible to greatly reduce installation processes, shortening installation time significantly, as well as ensuring quality of construction.
Since there is no need to use bolts or welded connections, the need for highly skilled welders is reduced thereby saving on-site costs.
Through the standard modular production of members and connecting sleeves, modular design, factory production, and professional installation of the members and connecting sleeves, a stable and reliable connection and installation capability is achieved. Additionally, the disclosed system avoids the disadvantages of welding and bolting at the construction site, simplifying assembly and increasing efficiency, thereby shortening the construction time, saving costs, which may facilitate the development of prefabricated buildings.
Other features, objectives and advantages of the present application will become apparent from the following detailed description of non-restrictive embodiments of the invention as illustrated in the accompanying drawings, wherein:
Various aspects of the present application will be described in detail in connection with the accompanying drawings, in order to provide a better understanding of the present application. It should be appreciated that these detailed descriptions are merely illustrative of exemplary embodiments of the present application, rather than restraining the scope of the present application. Throughout the specification, the same reference numerals refer to the same elements. The expression “and/or” includes any and all combinations of one or more of the associated listed items.
It should be understood that, although the terms first, second, etc. may be used herein to describe various elements, components or sections, these elements, components or sections should not be limited by these terms. These terms are merely used to distinguish one element, component or section from another element, component or section. Thus, for example, a first box-shaped sleeve, a first C-shaped sleeve, a first protrusion, a first recess discussed below could be termed as a second box-shaped sleeve, a second C-shaped sleeve, a second protrusion, a second recess without departing from the teachings of the present application.
In the accompanying drawings, the sizes and shapes of some of the elements, components or sections may be exaggerated for ease of explanation. The accompanying drawings are merely examples rather than strictly to scale.
It is also to be understood that the terms “includes”, “including”, “having”, “comprises” and/or “comprising”, when used in this specification, indicate the presence of stated features, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components and/or combination thereof. Also, a representation such as “at least one of . . . ”, when used behind a list of listed features, modifies the entire of the listed features, rather than the individual elements in the list. In addition, when describing the embodiments of the present application, the term “may” is used to indicate “one or more embodiments of the present application.” Also, the term “exemplary” is intended to refer to an example or to illustrate.
As used herein, the terms “substantially”, “approximately”, and the like are used as terms represented approximation rather than degree, and are intended to illustrate the inherent deviations of measured values or calculated values that will be recognized by those of ordinary skill in the art.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. It will also be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having meanings that is consistent with their meanings in the context of the relevant art and will not be interpreted in an idealized or overly formal sense, unless expressly limited so herein.
It should be noted that, in the case of not being conflict, embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and the embodiments.
The present application will be further described below with reference to specific embodiments.
Referring to
In this embodiment, the prefabricated structural system includes a plurality of steel structure joints and related members. The steel structure joints and related members further includes: a beam-column connecting sleeve 10, comprising a first box-shaped steel tube 101 and first C-shaped sleeves 102 extending outward from and perpendicular to outer surfaces of the first box-shaped steel tube 101, wherein the first C-shaped sleeve 101 is provided with first wedge shaped recesses 103 at ends of upper and lower flanges thereof; columns 20, having a column connecting end 201 inserted into the first box-shaped steel tube 101; main beams 30, having a main beam connecting end 301 inserted into the first C-shaped sleeve 102; and main beam fixing steel plates 40, provided with first wedge shaped protrusions 403 that are tenon-mortise-jointed with first wedge shaped recesses 103 of the first C-shaped sleeve 102 at both sides of the first C-shaped sleeve 102.
It should be noted that the number of the first C-shaped sleeves may be one or more than one, and the number of columns may be one column (e.g., a lower column), or two columns (e.g., an upper column and a lower column) depending on specific configuration. Such quantities serve as example possibilities and the present application is not restricted to these quantities.
As shown in
In an alternative embodiment, as shown in
In an alternative embodiment, the restraining protrusion 304 is in a form of a steel plate and is welded in advance onto the bottom surface of the main beam connecting end 301 of the main beam 30.
In an alternative embodiment, an inner stiffener 105 and an inner stiffener 105′ may be provided within the first box-shaped steel tube 101, wherein the inner stiffener 105 may be horizontally disposed and the inner stiffener 105′ may be vertically disposed. In this embodiment, two inner stiffeners for stiffening may be provided within the first box-shaped steel tube 101 at positions corresponding to the upper and lower flanges of the first C-shaped sleeve 102. When the column 20 is inserted into the first box-shaped steel tube 101, end surfaces of the column connecting end 201 of the column 20 may come to contact with surfaces of the inner stiffener 105.
In an alternative embodiment, as shown in
Although specific dimensions of the first box-shaped steel tube and the first C-shaped sleeve are illustrated in the accompanying drawings, it should be understood that such dimensions are merely exemplary embodiments and not a restriction. The dimensions of the first box-shaped steel tube and the first C-shaped sleeve can vary depending on the size of the upper and lower columns and the main beam to be connected without departing from the scope of the application.
In this embodiment, the main beam, the beam-column connecting sleeve and the column are made of steel. In addition, although the drawings show the cross section of the column as H-shaped, the H- shape is merely an exemplary example and not a restriction. For example, the cross-section of the column may also be box-shaped or circular. Similarly, although the drawings show the cross-section of the main beam as H-shaped, this is not a restriction and the cross section of the main beam may also be box-shaped.
The assembly process of the beam-column connecting sleeve 10, the column 20, the main beam 30 and the main beam fixing steel plate 40 will be described below with reference to
It should be understood that only the assembly method of a minimum unit (i.e., steel structure joints and related members) in a central portion of the prefabricated structural system is shown herein, and the assembling methods of other steel structure joints and related members in the system can be repeated or similar thereof- but is not described herein for the consideration of concise description.
In this embodiment, the assembling method of the prefabricated structural system includes: fixing a fixed end of a column 20; connecting, from an upper side of the column 20, a first box-shaped steel tube 101 of a beam-column connecting sleeve 10 onto a column connecting end 201 of the column 20; inserting a main beam connecting end 301 of a main beam 30 into a first C-shaped sleeve 102 of the beam-column connecting sleeve 10 extending outward from and perpendicular to an outer side of the first box-shaped steel tube 101; and inserting a main beam fixing steel plate 40 into the C-shaped sleeve 102 such that a tenon-mortise mating is formed between first wedge shaped recesses 103 provided at ends of upper and lower flanges of the first C-shaped sleeve 102 and first wedge shaped protrusions 403 provided at both sides of the main beam fixing steel plate 40, thereby restraining the main beam connecting end 301.
Specifically, as shown in
In an alternative embodiment, during installing process, the method may include: connecting the main beam-secondary beam connecting sleeve 50 onto the main beam 30 prior to inserting the main beam connecting end 301 into the first C-shaped sleeve 102 and fixing the main beam-secondary beam connecting sleeve 50 after inserting the main beam fixing steel plate 40 into the first C-shaped sleeve 102; and installing the secondary beam 60 into the main beam-secondary beam connecting sleeve 50. Since the main beam-secondary beam connecting sleeves may have different configurations, the secondary beam and the main beam-secondary beam connecting sleeves may involve different installing methods, which will be described in detail later in the specification.
In an alternative embodiment, during the installing process, the method may include: in connecting the first box-shaped steel tube 101 of the beam-column connecting sleeve 10 onto the column connecting end 201 of the column from the top side, providing contact between the end surface of the column connecting end 201 and the surface of the inner stiffener 105 arranged within the first box-shaped steel tube 101.
In an alternative embodiment, a steel wedge 80 may be used to adjust and secure the position of the column, as shown in
Next, the connection between the column connecting end of the column and the beam-column connecting sleeve will be described with reference to
As shown in
When the upper column is of smaller size relative to the lower column, a longitudinal stiffener 83 (as shown in
When the fabrication accuracy is insufficient or the reliability of connection between the beam-column connecting sleeve and the upper and lower columns thereof is expected to be further improved, “teeth” may be prefabricated in a factory on the inner surface of the first box-shaped steel tube of the beam-column connecting sleeve, and a “groove” may be prefabricated in a factory on the outer surface of the column flange that is inserted into the first box-shaped steel tube, thereby enhancing the interlocking force between the column and the beam-column connecting sleeve.
In an alternative embodiment, the inner surface of the first box-shaped steel tube 101 may be provided with protruding teeth 106 and, the outer surface of the column connecting end 201 may be provided with a groove 206 correspondingly matched with the protruding teeth 106, wherein the groove 206 can extend to the end of the outer surface of the column connecting end 201 (as shown in
Accordingly, the assembling process may further include: connecting the first box-shaped steel tube 101 onto the column connecting end 201 of the column 20, mating the protruding teeth 106 provided on the inner surface of the first box-shaped steel tube 101 onto the groove 206 provided on the outer surface of the column connecting end 201.
In this embodiment, two grooves 206 (or protruding teeth 106) although not limited to this configuration, may be spaced apart from each other. For example, a single groove 206 (or protruding teeth 106) may be provided. In addition, the grooves 206 (or protruding teeth 106) can take on other cross sectional shapes, as long as they can be mated with each other to restrain the position of the column.
In an alternative embodiment, the depth (or height) of the groove 206 (or protruding teeth 106) may be 5 mm, although not limited thereto.
In addition, it is also possible, if needed, to apply steel adhesive between connecting surfaces of at least one of the connecting ends. For example, the steel adhesive may be applied to the connecting surfaces between the column connecting end and the beam-column connecting sleeve, and/or the main beam connecting end and the beam-column connecting sleeve, and/or the secondary beam (which will be described in detail later) and the main beam-secondary beam connecting sleeve. By applying the steel adhesive, the reliability of the connection is further increased, and the energy dissipation ability of the structural system during an earthquake is improved.
In this embodiment, with the engagement between the groove 206 and the protruding teeth 106, the precaution not only can strengthen the connection and restrain the position of the column, but also can improve the setting accuracy of the column, so as to ensure assembly precision of the overall system.
Next, with reference to
As shown in
The main beam is welded in advance with a steel plate at the end of the bottom of the lower flange to form a restraining protrusion 304.
In an alternative embodiment, the assembly method may include: Upon inserting the main beam connecting end 301 into the first C-shaped sleeve 102, the main beam connecting end 301 of the main beam 30 is pushed into the first C-shaped sleeve 102 which perpendicularly protrudes from the outside of the first box-shaped steel tube 101 laterally from the side such that the restraining protrusion 304 provided at the bottom of the lower flange of the main beam connecting end 301 can engage with the restraining groove 104 provided on the bottom surface of the first C-shaped sleeve 102.
Specifically, as shown in
In addition to transfering bending moment and shear force to the joints in the case of an earthquake, the main beam also transfers horizontal tension or compression force to the joints. Structural steel adhesive may be further coated onto the connecting surfaces between the H-shaped steel beam and the sleeve, to enhance the ability of transferring horizontal force at joints, as well as improving energy dissipation ability of the structural system during an earthquake.
The assembling method and related configurations of the main beam, the main beam-secondary beam connecting sleeve, and the secondary beam will be described below. In the present application, the main beam-secondary beam connecting sleeves have two configurations corresponding to the first main beam-secondary beam connecting sleeve and the second main beam-secondary beam connecting sleeve respectively. The two configurations are described below.
The configuration of a secondary beam and a main beam-secondary beam connection sleeve and the process of attaching them with the main beam, according to the first exemplary embodiment involving the implementation of the main beam-secondary beam connection sleeve, will be described below with reference to
Specifically, as shown in
In an alternative embodiment, as shown in
With this configuration, it is possible to prevent the second box-shaped steel tube from sliding in the direction of the main beam, so as to restrain the relative movement between the main beam and the main beam-secondary beam connecting sleeve.
Next, the connection between the main beam and the secondary beam will be described with reference to
As shown in
As shown in
Since the methods of assembly for these four configurations are similar, the following description will be made with reference to the examples provided in
In an alternative embodiment, the installation of the secondary beams 60 into the main beam-secondary beam connecting sleeve 50 includes: pushing from an upper side of the secondary beams 60 into the steel connecting plate 502, forming a tenon-and-mortise joint between the dovetail-shaped recess 503 inclined inwardly at the end of the steel connecting plate 502 and the dovetail-shaped protrusion 603 provided at the end of the secondary beam 60, the steel connecting plate 502 extends outward from and perpendicular to the second box shaped steel tube 501 of the main beam-secondary beam connecting sleeve 50.
Specifically, as shown in
Next, the configuration of the secondary beam and the main beam-secondary beam connecting sleeve as well as the installation process for connecting them with the main beam, according to a second exemplary embodiment which pertains to a second main beam-secondary beam connecting sleeve configuration, will be described with reference to
In alternative embodiments, the steel structure joint and related members may also include a main beam-secondary beam connecting sleeve 50′ (i.e., a second main beam-secondary beam connecting sleeve in the second exemplary embodiment), a secondary beam 60′ and a secondary beam fixing steel plate 70. The main beam-secondary beam connecting sleeve 50′ includes a second box-shaped steel tube 501′ and a second C-shaped sleeve 504 extending from and perpendicular to the outer surface of the second box-shaped steel tube 501′. The second C-shaped sleeve 504 is provided with second wedge shaped recesses 505 at ends of the upper and lower flanges. The secondary beam 60′ has a secondary beam connecting end 601 inserted into the second C-shaped sleeve 504. The secondary beam fixing steel plate 70 is provided on both sides with second wedge shaped protrusion 705 that can be tenon-and-mortise mated with the second wedge shaped recesses 505 of the second C-shaped sleeve 504.
Specifically, as shown in
As shown in
Next, the connection between the main beam and the secondary beam will be described with reference to
As shown in
In an alternative embodiment, the installation of the secondary beams 60′ into the main beam-secondary beam connecting sleeve 50′ includes: inserting the secondary beam connecting end 601 of the secondary beams 60′ into the second C-shaped sleeve 504 which extends outward from and perpendicular to the second box-shaped steel tube 501′ of the main beam-secondary beam connecting sleeve 50′; and inserting the secondary beam fixing steel plate 70 into the second C-shaped sleeve 504, such that a tenon-and-mortise joint is formed between second wedge shaped recesses 505 disposed at the ends of the upper and lower flanges of the second C-shaped sleeve 504 and second wedge shaped protrusions 705 provided on both sides of the secondary beam fixing steel plate, thereby restraining the secondary beam connecting end 601.
Specifically, before the main beam 30 is inserted into the first C-shaped sleeve 102, the second box-shaped steel tube 501′ of the main beam-secondary beam connecting sleeve 50′ is connected onto the main beam 30 and set into position, and subsequently the secondary beam 60′ is hoisted in place and pushed from the side in a horizontal direction into the second C-shaped sleeve 504 which extends outward from the second box-shaped steel tube 501′ on one side or both sides of the steel tube 501′, and subsequently, the secondary beam fixing steel plate 70 with the wedge shaped protrusions 705 is horizontally inserted into the wedge shaped recess (or gap) 505 at the opening side of the second C-shaped sleeve.
In an alternative embodiment, the positioning of the main beam-secondary beam connecting sleeve may further include: connecting the second box-shaped steel tube 501′ of the main beam-secondary beam connecting sleeve 50′ onto the main beam 30; and welding a shear stud at center area of intersection between the upper flange of the main beam 30 and the main beam-secondary beam connecting sleeve 50′ to restrain the position of the second box-shaped steel tube 501′.
Specifically, as shown in
In addition, when fabrication precision is insufficient or it is desired to further improve the reliability of the secondary beam transferring shear force to the main beam so as to improve energy dissipation ability of the structural system during an earthquake, it is advantageous to apply the steel adhesive onto the connection surfaces between the dovetail-shaped recesses inclined inwardly and the dovetail-shaped protrusions pertaining to the first main beam-secondary beam connecting sleeve implementation, and onto the connection surfaces between the secondary beam and the sleeve pertaining to the second main beam-secondary beam connecting sleeve implementation.
In an alternative embodiment, the assembling method further includes: after completing the above steps, inserting a connecting end of another column (for example, an upper column) into the beam-column connecting sleeve, from an upper side thereof, so as to repeat the assembling process.
To summarize the above embodiments, in one specific embodiment, the steps of assembling a prefabricated structural system on site may include sequentially: (i) installing columns at first floor; (ii) connecting a beam-column sleeve; (iii) connecting a main beam-secondary beam connecting sleeve onto a main beam; (iv) hoisting the main beam in place; (v) installing a main beam fixing plate; (vi) positioning the main beam-secondary beam connecting sleeve through installation of welding shear studs; (vii) installing a secondary beam; (viii) if the configuration includes a second main beam-secondary beam connecting sleeve, installing a secondary beam fixing steel plate; (i) installing columns at upper floors; and repeating (ii)-(viii).
According to the above embodiments, pre-fabricated columns and the main beam steel members are directly assembled together, by using the beam-column connecting sleeve similar to a tenon-and-mortise jointing structure; and pre-fabricated main beam and secondary beam steel members are assembled together, using a main beam-secondary beam connecting sleeve similar to the dovetail structure or a main beam-secondary beam connecting sleeve similar to a tenon-and-mortise jointing structure. With such a configuration, it is possible to not only realize a main steel structure with no-bolt and no-welding connections, but also improves the aseismic performance of the steel structural system. The fabrication procedures of the columns and steel beams, and the assembling procedure of the steel structural construction will be simplified.
In addition to the steel structure, the aforementioned prefabricated structural construction and assembly method thereof may be further extended to reinforced concrete structure. Hereafter, related configurations of the precast reinforced concrete column (i.e., the column), the beam and the beam-column connection sleeve will be described with reference to
In addition to steel structures and reinforced concrete structures, the aforementioned prefabricated structural system and the installing method thereof may be further extended to timber structures. The related arrangement of the timber structure beam and beam-column connecting sleeve will be described below with reference to
A timber structural beam 920 is prefabricated at the factory. A steel anti-slip steel plate 928 is installed onto bottom surfaces of the both ends of the beam 920 by using flat steel shear stud or steel nails 924, so as to connect and fix the beam 920 with the beam-column connecting sleeve 10. The method of installing the prefabricated timber structure beam 920 and the beam-column connecting sleeve 10 on site is the same as that of the above aforementioned steel beam, and in consideration of conciseness of the description, the description of such will not be repeated herein.
Although the present application is mainly described in detail with the steel structural system as an example, those skilled in the art should understand that the conception of the present application may also be applied to reinforced concrete structures and timber structures. In addition, it should be understood that the materials made of steel as described above are only regarded as examples and not limitation, and for example, they may also be made of reinforced concrete or timber respectively.
In the various embodiments of the present application, the singular forms may include the plural meaning unless indicated otherwise to the contrary. For example, in embodiments, the number of the main beam may be one or two, the number of the column may be one or two (a upper column and a lower column) and the number of the first and the second C-shaped sleeve may be one or two depending on reality situation; however, this is merely exemplary and not for limitation. Throughout this document, technical terms are not limited to the literally defined meanings, but include different meanings for implementing the same or similar functions without departing from the scope of the application as defined in the claims.
Additionally, it should be noted that some of the steps described herein do not necessarily occur in the written order, unless explicitly indicated. For example, in some alternative embodiments, the functions represented in the blocks may be performed not under the order indicated in the figures.
The above description is only the preferred embodiments of the present application and the description of the technical principles of the present application. Those skilled in the art should understand that the scope of the application involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features. The application should also cover other technical solutions formed by any combination of the technical features described above or their equate features. The application should also cover, for example, the technical solutions formed by replacing the above features with technical features having similar functions to those disclosed in the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201710104308.4 | Feb 2017 | CN | national |
| 201710804408.8 | Sep 2017 | CN | national |
