The present invention relates to modular manufacturing, and in particular to connection systems and methods for cubic structures.
With the rapid development of digital manufacturing, modularization has become a trend in all walks of life. Modular manufacturing is like molecules that constitute a chemical substance. Each module is similar to a molecule (module and molecule are used interchangeably herein). Similar to a chemical substance which is an assembly of various molecules and different chemical substances can be produced by combining different molecules, modular manufacturing can produce different modular constructions by combining different modules. In the construction industry, modern construction methods tend to use off-site manufacturing and on-site assembly to reduce labor costs and time, and to be more sustainable in terms of waste reduction, transportation, on-site wet work, and overall energy consumption.
The use of molecular methods facilitates logistics and transportation, and improves the manufacturability of installation. Molecules can be of any material, such as steel, steel reinforced concrete, aluminum or composite material as the line components (or reinforcing bars); and steel bar reinforced concrete, plastic or composite material as the face components.
In the construction industry, molecules often exist in an orthogonal manner, where horizontal members are called beams and vertical members are called columns. However, using the current digital manufacturing techniques, members are not limited to the orthogonal manner, or the general “X-Y”, or the polar grid coordinate system positioning. Therefore, the key issue in facilitating the assembly process is to develop methods to connect different molecules together.
One aspect of the present invention relates to a connection system for cubic structures, the system includes structural members and connecting members, the structural members are configured to interconnect with another structural member through the connecting members, the structural members are provided with accommodating portions for accommodating the connecting members, the structural members include various structural members having different types of interconnection, and the connecting members include various connecting members adapted to the different types of interconnection of the structural members.
In one embodiment of the present invention, the structural members include hollow components, each hollow component includes a hollow tube having two ends each provided with an end plate, each end plate is provided with an opening, a mouth of the hollow tube is disposed at the opening of each end plate.
In one embodiment of the present invention, the opening has a length which is greater than a width of the opening.
In one embodiment of the present invention, the hollow components are hollow linear components or hollow curve components.
In one embodiment of the present invention, the connecting members include rigid strip-shaped connecting members or flexible strip-shaped connecting members, and the rigid strip-shaped connecting members or the flexible strip-shaped connecting members connect the hollow components that are stacked together through the accommodating portions accommodated in the hollow components.
In one embodiment of the present invention, the rigid strip-shaped connecting members include reinforcing bars, corresponding structural members are interconnected by overlapping one reinforcing bar with another reinforcing bar for a certain length; or
In one embodiment of the present invention, the connector and the reinforcing bars are made of a same material, or the connector is made of a material stronger than a material of the reinforcing bars, and a protruded portion is provided at a bottom of the connector.
In one embodiment of the present invention, the connecting members include a connecting plate for connecting the hollow components that are juxtaposed, the connecting plate is provided with raised portions having an opening, shape and arrangement of the raised portions are adapted to the openings in the end plates of the hollow components to which the raised portions are connected.
In one embodiment of the present invention, an asymmetric shear key is provided on the connecting plate, when the hollow components are hollow linear components, the connecting plate is a straight connecting plate, and when the hollow components are hollow curve components, the connecting plate is a curved connecting plate.
In one embodiment of the present invention, the structural members include solid components, each solid component includes opposite first and second end faces, the first end face is provided with a male connecting portion, the second end face is provided with a female connecting portion, and the male connecting portion and the female connecting portion are configured to respectively connect to a female connecting portion and a male connecting portion of other structural members that are stacked and interconnected with the solid component.
In one embodiment of the present invention, the structural members include solid components, each solid component includes opposite first and second end faces and a side face connecting the first and second end faces, the side face is provided thereon with a plurality of grooves extending from the first end face to the second end face, a plurality of wire loops is arranged at intervals along each of the plurality of grooves, when juxtaposed with another solid component, the wire loops of the juxtaposed solid components overlap each other to form interconnecting channels for accommodating the connecting members that interconnect the juxtaposed solid components.
In one embodiment of the present invention, the structural members include solid components, each solid component includes opposite first and second end faces and a side face connecting the first and second end faces;
In one embodiment of the present invention, the solid components that are juxtaposed against each other have a same thickness.
In one embodiment of the present invention, the solid components that are juxtaposed against each other include a primary solid component and a secondary solid component, the primary solid component being thicker than the secondary solid component.
In one embodiment of the present invention, the structural members include solid components, the solid components that are juxtaposed against each other include a primary solid component and a secondary solid component, the primary solid component being thicker than the secondary solid component;
In one embodiment of the present invention, the structural members include a plate-type member, and the plate-type member includes a central plate, and two side plates perpendicularly connected to two ends of the central plate respectively at a central position of the two side plates, the central plate is provided therein with a plurality of rod-shaped members extending along a length direction and arranged at intervals along a height direction, each rod-shaped member is provided at intervals along the length direction with a plurality of protruded rods protruding toward a thickness direction on a same side of the central plate, and each of the plurality of protruded rods has a protruding length shorter than a length of the side plates in the thickness direction on the same side of the central plate.
In one embodiment of the present invention, the connecting members include a connecting frame formed by connecting horizontal rod members and vertical rod members that are distributed in a staggered manner.
In one embodiment of the present invention, the accommodating portions are arranged at a center of the structural members, or the accommodating portions include a plurality of accommodating portions distributed at different locations of the structural members.
In one embodiment of the present invention, the structural members include polygonal cubes, the cubes each including an inclining face that is inclined at a certain angle to an adjacent face.
In one embodiment of the present invention, the structural members include polygonal cubes, and faces of the cubes include planar faces or curved faces.
Another aspect of the present invention relates to a connection method for cubic structures, including:
The present invention provides a connection system for cubic structures adapted to different scenarios, thereby facilitating the development of modular constructions.
In order to understand in more detail the manner in which the above features of the present invention are understood, the present invention is briefly summarized above, and the present invention can be described more specifically by reference to the embodiments, some examples of which are shown in the accompanying drawings. It should be noted, however, that the drawings show only typical embodiments of the present invention and should therefore not be considered to limit the scope of the present invention, as the present invention may allow for other equivalent embodiments.
The principles of the present invention and its advantages are best understood and illustrated by referring to
Therefore, the following detailed description should not be taken as limiting, and the scope of the present invention is defined by the appended claims and their equivalents. Reference in the specification to “one embodiment”, “an embodiment”, “embodiment” or “one or more embodiments” is intended to indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention.
Referring to
In general, the system of an embodiment of the present invention includes structural members and connecting members, the structural members are configured to interconnect with another structural member by the connecting members, the structural members are provided with accommodating portions for accommodating the connecting members, the structural members include various structural members having different types of interconnection, and the connecting members include various connecting members adapted to the different types of interconnection of the structural members. The accommodating portions may be arranged at the center of the structural members, or may include a plurality of accommodating portions distributed at different locations of the structural members.
Referring to
In an embodiment of the present invention, all components may be hollow or solid, and straight or curved. When the components extend mainly in one dimension, they are called line components. When the components extend mainly in two dimensions, they are called face components. When the components extend mainly in three dimensions, they are called cube components. In addition, it can be understood that in the disclosure, all structural members include solid portions and hollow portions. Therefore, in the disclosure, a solid component refers to a component with more solid portions than hollow portions, and a hollow component refers to a component with more hollow portions than solid portions.
For the convenience of description,
A line component can exist by itself or as edges of a cube component. The edges can be straight or curved. If they are straight, it can be horizontal like a beam, vertical like a column or inclined like a frame. This kind of edge component can also be curved or double-curved in one plane. Connection is to resist the force of the contacting faces. A single-point connection can transfer axial force and shear force, and torques can be transferred if the connection point of the contacting faces is more than a single point. The principles of the linear and curve components are the same, just the arrangements are slightly different.
For a hollow component, it may include a hollow tube having two ends each provided with an end plate. Each end plate is provided with an opening, and a mouth of the hollow tube is disposed at the opening of each end plate. Referring to
The connecting members can be rigid strip-shaped connecting members (reinforcing bars) or flexible strip-shaped connecting members (cables).
Both ends of the reinforcing bar (e.g., 101 shown in
For line components that are not straight, i.e. when the structural members are hollow curve components, the reinforcing bars can be replaced with cables, with or without post-tensioning after installation. For cables, connecting cables consist of a pre-stressed/post-tensioned cable connector, the connector paired with the cable in the middle. They can be cable-cable connectors (cable-to-cable) or cable-reinforcing bar connectors (cable-to-reinforcing bar).
The connection process between edge components is as follows:
A connecting plate (e.g., straight connecting plate 103 shown in
The connecting plate should have at least one opening and a shear key, named OS-key (i.e., the raised portions having an opening shown in the figures, the shape and arrangement of the raised portions are adapted to the openings in the end plates of the hollow components to which the raised portions are connected), i.e., each edge component has an OS-key. If another edge component of an adjacent molecule is to be connected, the connecting plate should be extended to provide another OS-key. In simple terms, two OS-keys for two adjacent edge components, and three OS-keys for three adjacent components, etc.
The connecting plate is a prefabricated part for controlling the arrangement of the edge components and molecules. If the connecting components are in a curved orientation, the connecting plate should be manufactured by 3D printing or casting to match the size and shape of the shear key.
The openings and the key can be of any shape. To facilitate lifting and transport, rectangular openings can be provided. This allows the use of twist locks commonly used in the container industry.
Two components are connected together by bolts and nuts, or reinforced with grout. At least one hollow space is reserved between the male and female components. Depending on design needs, the hollow space can be located in the middle or at the corners, and the hollow space in the components may have different sizes and locations to facilitate connection, see for example
For edge components made of solid portions, there is usually at least one guiding tube (the accommodating portion in the solid component) to allow reinforcing bar/cable to connect the MN and MP modules. Once the reinforcing bar/cable is installed, the guiding tube can be filled with a material to secure the reinforcing bar/cable in place. If the edge member is a steel reinforced concrete member, the reinforcing bar can be fixed to the guiding tube as a normal steel reinforced concrete structure because of grouting. The connection method of the edge components in this arrangement is the same as that for the hollow components described above
In an embodiment of the present invention, the solid components may include opposite first and second end faces, the first end face is provided with a male connecting portion (for example, four protrusions on the top face shown in
The solid components may also include opposite first and second end faces and a side face connecting the first and second end faces, the side face is provided thereon with a plurality of grooves extending from the first end face to the second end face, and a plurality of wire loops (such as wire loops 301 shown in
For an edge component made of solid portions but connected to an adjacent edge member, the construction process is as follows:
The assembly sequence of the solid components is generally as follows:
The connection of the solid components can also use steel bars and connectors to provide vertical connection. This connection may also use threaded steel bars with sufficient overlap length to provide vertical connection. Generally, tube opening space is reserved in the solid components.
For a plurality of juxtaposed solid components, the assembly sequence of the connection is:
In addition to connecting the edges, the cube structures can also be connected through contact faces between cube molecules. The faces can be planar or curved, but two connecting faces should be contacting each other (i.e. parallel faces).
This type of connection is developed for prefabricated face components, using in situ methods to combine the materials of the face components together. There are usually other components in the gap between the face components (such as a connecting frame, or the steel bar cage shown in
The face components may include:
This type of components is developed for two face components to be combined together in the following installation sequence:
Another type of face components is also developed, the connection of this type of face components is similarly to type 2, but the two face components have two different functions, i.e., a primary face component and a secondary face component. The primary face component is usually thicker than the secondary face component because it is the primary component that transfers and resists structural action. It comes with or without an edge component. On the other hand, the secondary face component is designed not to bear torques, but can only bear axial and shear forces. Due to the different thicknesses of the two face components, there will be no symmetry about a plane.
The installation sequence for this type of face components includes:
For faces that transfer only axial and shear forces, as well as in-plane and out-of-plane shear forces, grooves closed by circular bars or wire loops are used. Reinforcing bars or cables are inserted into the center of the loops before filling with materials. This connection cannot transfer any torques, but only axial and shear forces.
If cables are used on curved faces, the procedure is as follows:
For face-transferred torques, it requires the components to transfer a push-pull force. When dealing with this push-pull action, there are three methods as shown below.
The faces of the molecule are designed as permanent objects with connecting pins/closed-type reinforcing bars or wire loops etc. to ensure the forming of an assembly with the permanent objects after in-situ filling.
The faces are designed to resist designed torques. Two faces are combined into a composite face by means of the transfer of axial and shear forces by the faces. The contacting faces are designed to resist complementary shear of the composite material face portions. The push-pull components are resisted by means of the reinforcing bars/cables connection, and then grouted.
The design of the face of one molecule for the face of another molecule is only designed for transport and installation purposes. The two faces are also connected by means of the transfer of axial and shear forces by the faces. The push-pull components are resisted by the reinforcing bars/cables, and then grouted.
Specifically, referring to
Referring to
Referring to
Referring to
Referring to
Among them, the connecting members can adopt the steel bars 201 with the connectors 202 shown in
As shown in
The prefabricated member includes a plate-type member 303, the plate-type member includes a central plate, and two side plates perpendicularly connected to two ends of the central plate respectively at a central position of the two side plates, the central plate is provided therein with a plurality of rod-shaped members extending along a length direction and arranged at intervals along a height direction. Each rod-shaped member is provided at intervals along the length direction with a plurality of protruded rods protruding toward a thickness direction on a same side of the central plate, and the protruding length of each protruded rod is shorter than the length of the side plates in the thickness direction on the same side of the central plate.
As shown in
As shown in
The secondary solid component 502 may only include wire loop connectors distributed on its side face.
An embodiment of the present invention also provides a connection method for cubic structures, including:
The present invention is capable of numerous modifications in various obvious respects, all without departing from the spirit and scope of the present invention. Accordingly, the description and drawings are to be regarded as illustrative in nature and not restrictive.
The features described herein may be combined to form other embodiments, and sub-elements of certain embodiments may also form other embodiments. The foregoing description of the present invention with preferred embodiments should not be construed as limiting the scope of the present invention. It is understood and apparent to those skilled in the art that further modifications to the embodiments of the present invention so described can be made without departing from the spirit and scope of the present invention.
Filing Document | Filing Date | Country | Kind |
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PCT/CN2021/108278 | 7/23/2021 | WO |