Patent Application
20240337102
The present invention belongs to the field of building construction components and specifically relates to a concrete skeleton structure made of composite connecting components and its construction method.
A concrete skeleton structure refers to the steel-concrete composite structure formed by configuring steel profiles within the cross-section of reinforced concrete components, whose typical structural form is as follows: the steel profiles are located in the central cavity of the concrete skeleton and fixed in the side walls of the concrete skeleton. Several equally spaced hook bars are provided circumferentially on the concrete skeleton, and both longitudinal bars and steel profiles are located within the enclosure of the hook bars.
At present, the hook bars in commonly used concrete skeleton structures have poor constraint force on large longitudinal bars, which means the effect of forming an overall structure is also poor. The solution is to replace the hook bar with the perforated steel strips. Although the effect of the overall skeleton structure is significantly improved, there still exist the following major technical defects: firstly, the labor cost of the perforated steel strip installation is too high; secondly, after the being perforated with holes, the stress bearing part of the perforated steel strip becomes relatively weak, and the pressure on the section of the arc mouth is very high, which has certain damage to the large longitudinal bars.
Therefore, it is necessary to design a concrete skeleton structure made of composite connected components and its construction method to effectively protect large longitudinal bars, wherein the resulted steel reinforced concrete structure has significant advantages such as high strength, high stiffness and good seismic performance.
In response to the shortcomings of the existing technology mentioned above, the present invention provides a concrete skeleton structure made of composite connected components and its construction method.
Specifically, the present invention relates to the following technical solutions:
The present invention provides a concrete skeleton structure made of composite connected components characterized in that it comprises a concrete skeleton consisting of several large longitudinal bars, several small longitudinal bars and several cast steel components, wherein the several large longitudinal bars and the several small longitudinal bars are arranged along the length direction of the concrete skeleton and are fixedly connected through the several cast steel components to form a columnar structure with gaps in a crisscross manner, the several small longitudinal bars are located inside the columnar structure, several hook bars are arranged circumferentially in the several large longitudinal bars on the outer side of the columnar structure, the large longitudinal bars and small the longitudinal bars are both surrounded by the hook bars.
Preferably, the cast steel components comprise a occlusal docking component and a serial component, wherein the occlusal docking component is used for connecting pieces between the adjacent large longitudinal bars in the length direction, the occlusal docking component comprises a U-shaped bar, an arc steel strip and a first locking piece, the U-shaped bar is provided with an arc mouth, and a fixed structure matched with the large longitudinal bars is provided in the arc mouth, the arc steel strip is arranged inside the U-shaped bar and is flush with the opening of the U-shaped bar, and the first locking piece is arranged at the junction surface of the U-shaped bar and the arc steel strip, and the arc surface of the U-shaped bar and the arc steel strip together form a clamping surface that clamps and protects where the adjacent large longitudinal bars connect, the serial component connects the several large longitudinal bars arranged in parallel with each other to form an integral columnar structure.
Preferably, one surface of the arc steel strip is concave arc, the other surface is plane, and the plane is flush with the opening of the U-shaped strip.
Preferably, the serial components consist of a first tandem connection plate, a second tandem connection plate and a third tandem connection plate, wherein the first tandem connection plate has a U-shaped notch, one side of the adjacent two first tandem connection plates is fixed with a square steel and the other side of the adjacent first tandem connection plates is fixed with reinforcing plates, one surface of the second tandem connection plate is a concave arc and the other surface of the second tandem connection plate is a plane, the arc surface of the first tandem connection plate and the arc surface of the second tandem connection plate jointly form a clamping surface that clamps protects the large longitudinal bars, the plane is slotted to form a groove which is provided with a third tandem connection plate, the junction surface of the first tandem connection plate, the second tandem connection plate and the third tandem connection plate is provided with a second locking member.
Preferably, the first locking member is the first grid, the junction surface of the U-shaped strip and the arc steel strip is provided with a corresponding installation hole arranged with a grid, and one end of the grid is provided with a hole.
Preferably, the second locking member is a connecting frame surrounding the first tandem connection plate, second tandem connection plate and the third tandem connection plate to form a tandem component.
Preferably, a symmetrical hook is provided at both ends of the hook bars.
Preferably, the reinforcing plate is a reinforcing unit whose both surfaces are alternatively combined with a triangular and a circular, a supporting member is provided between the adjacent reinforcing plates.
The present invention also provides a method for constructing a concrete skeleton structure made of composite connecting components comprising:
Step 1: docking and lengthening several large longitudinal bars through an occlusal docking component;
Step 2: arranging multiple of large longitudinal bars from bottom to top with two large longitudinal bars as one layer, arranging several serial components in intervals along the length direction of the large longitudinal bars, the two adjacent upper and lower layers of the serial components are fixedly connected by a square steel and a reinforcing plate to form a columnar structure;
Step 3: circumferentially providing several equally spaced hook bars between the upper and lower layers of large longitudinal bars, providing several equally spaced hook bars between the same layer of large longitudinal bars, fixing the two ends of the hook bars where the occlusal docking is performed on the grid;
Step 4: providing small longitudinal bars in the several third tandem connection plates to support the horizontally arranged hook bars so as to complete the skeleton structure waiting for pouring concrete.
Preferably, the skeleton structure is a six story steel frame columnar with five spacing zones.
Compared with existing technology, the beneficial effects of the concrete skeleton structure made of composite connected components and its construction method in the present invention are as follows:
Each component can be prefabricated and assembled on-site for use. The composite cast steel component has a reinforced connection port and the large longitudinal bars are integrated longitudinally and tightly held in all directions, greatly increasing the stress bearing effect compared with the perforated steel strip, which can not only ensure the integrity, but also greatly improve the seismic performance;
The docking component docks two large longitudinal bars on the same axis through cold work, eliminating the damage of high-temperature welding to the local physical properties of the steel bars;
The construction is simple and the prefabricated cast steel skeleton parts are all prefabricated and produced in the factory. On the construction site, the cast steel in the prefabricated part is directly connected to the nodes or steel columns (or transitively connected to the concrete columns), and then the hollow part inside the concrete is poured to complete the construction and installation, which means the construction performance will be greatly improved;
The replacement of the stirrup with hook bars significantly improves the effectiveness of fixing large longitudinal bars, providing a more tightly bonding with concretes;
The layered hook bars layout produces a special beam overlap effect, which significantly improves the overall stress resistance.
Overall, the adoption of the skeleton structure and construction method of the present invention simplifies the construction process and difficulty and gives the skeleton structure significant advantages in terms of stress performance, durability performance, economic performance, etc. It can be widely used in various types of reinforced concrete and steel structure buildings, especially in large-span, heavy load, complex and irregular high-rise and super high-rise buildings, presenting a great engineering practical significance on the promotion of application.
In the drawings: large longitudinal bar-1, small longitudinal bar-2, hook bar-3, U-shaped strip-4, arc steel strip-5, first grid-6, first tandem connection plate-7, second tandem connection plate-8, third tandem connection plate-9, square steel-10, reinforcing plate-11, connecting frame-12, supporting member-13, hole-14.
It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention.
The following will provide a clear and complete description of the technical solution in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments only construe a part of the embodiments of the present invention. All other embodiments obtained by a person skilled in the art without creative labor based on the embodiments of the present invention fall within the protection scope of the present invention.
The technical solution of Embodiment 1 is a concrete skeleton structure made of composite connected components, as shown in
The cast steel components in this embodiment consist of an occlusal docking component and a serial component. The occlusal docking component is used as a connecting member between adjacent large longitudinal bars in the length direction. The occlusal docking component comprises a U-shaped bar 4, an arc steel plate bar 5, and a first locking piece. The U-shaped bar has an arc mouth, and a fixed structure matching with the large longitudinal bars is provided in the arc mouth. The fixed structure of this embodiment is provided with a corresponding convex part to fill the gap according to the position and size of the gap made by two large longitudinal bars (four small openings are arranged between the two symmetrical hemispheres of the round steel bar) and mutually occluded with the concave parts on the large longitudinal bars to prevent the large longitudinal bars from sliding in the U-bars. The arc steel strip is provided in the U-bar and is flush with the opening of the U-bar, and the first locking member is provided at the junction surface of the U-bar and the arc steel strip. The U-shaped strip and the arc surface of the arc steel strip together form a clamping surface that clamps and provides where the adjacent large longitudinal bars connect. The serial component effectively connects several large longitudinal bars provided in parallel with each other to form an integral cylindrical structure. The first locking member of this embodiment is the first grid 6. A corresponding installation hole is provided at the junction surface of the U-shaped strip and the arc steel strip. A grid is provided in the corresponding installation hole, and a hole 14 is provided at one end of the grid to fix the hook bar. On the plane of the arc steel strip, a corresponding groove is provided according to the position of the U-shaped strip hole. The grid passes through the square hole of the U-shaped strip and the groove of the arc steel strips.
A grid passes through the square hole of the U-bar and the groove on the irregular slab.
One side of the arc steel strip in this embodiment is concave arc, and the other side is plane, wherein the plane is flush with the opening of the U-shaped strip.
The serial components of this embodiment comprise a first tandem connection plate 7, a second tandem connection plate 8, and a third tandem connection plate 9. The first tandem connection plate is provided with a U-shaped notch, and two adjacent first tandem connection plates support the fixing of the square steel 10 while a reinforcing plate 11 is provided on the other side. The first tandem connection plate can be cast into an integrated structure with the square steel and the reinforcing plate. One side of the second tandem connection plate is an inward concave arc, and the other side is a plane. The arc surface of the first tandem connection plate and the arc surface of the second tandem connection plate jointly form a clamping surface that clamps and protects the large longitudinal bars. The plane is slotted to form a groove which is provided with a third tandem connection plate. The conjunction surface of the first tandem connection plate, the second tandem connection plate and the third tandem connection plate is provided with the second locking member.
The second locking member of this embodiment is the connecting frame 12, which surrounds the first tandem connection plate, second tandem connection plate, and third tandem connection plate to form a tandem connection component. The connecting frame is equipped with holes corresponding with the first tandem connection plate, the second tandem connection plate and third tandem connection plates, and a second grid is provided inside the hole for seven-hole in-line connection (not shown in the figure).
The hook bars in this embodiment is equipped with symmetrical hooks at both ends to hook onto the large longitudinal bars.
The reinforcing plate of this embodiment is a reinforcing unit made by alternative combinations of triangles and circles on both sides.
A support member 13 is provided between the reinforcing plates in this embodiment, which can be a triangle formed by a transverse partition and an inclined plate, and the centerline of the transverse partition and the reinforcing plate coincides.
The technical solution of embodiment 2 of the present invention provides a method for constructing the above-mentioned skeleton structure, including the following steps:
The skeleton structure of this embodiment is a six layer steel frame columnar structure with five spacing zones. That is, 12 occlusal docking large longitudinal bars (to prevent overlapping interfaces) are respectively placed on both sides into five “string groups” (the four areas separated by the five “string groups” are called “separation area”, and the five layers separated by the six steel bars are called “separation layer” from top to bottom, which are sequentially layer 1, 2, 3, 4, and 5). Then, connection plates are inserted parallelly to the connecting ports of the two “string resistances” on both sides, which are then fixed with grids to form a solid steel frame. A small longitudinal bar is placed on each layer of the steel frame (a total of 6 layers) in the middle of the third string connection plate. In the middle to support the horizontally arranged hook bars.
The embodiments of the present invention have the following advantages:
The adoption of the skeleton structure and construction method of the present invention simplifies the construction process and difficulty and gives the skeleton structure significant advantages in terms of stress performance, durability performance, economic performance, etc. It can be widely used in various types of reinforced concrete and steel structure buildings, especially in large-span, heavy load, complex and irregular high-rise and super high-rise buildings, presenting a great engineering practical significance on the promotion of application.
The above are only preferred embodiments of the present invention and do not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202211150191.0 | Sep 2022 | CN | national |
The present disclosure is a continuation-application of International (PCT) Patent Application No. PCT/CN2023/091427, filed on Apr. 28, 2023, which claims priority of Chinese Patent Applications No. 202211150191.0, filed on Sep. 21, 2022, the entire contents of which are hereby incorporated by reference in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/091427 | Apr 2023 | WO |
| Child | 18747964 | US |
