CN106193435A - A kind of antinode central layer precast concrete assembled composite wall - Google Patents

Abstract

The invention relates to a prefabricated concrete assembly type composite wall with antinode core board. The composite wall includes a corrugated core plate unit, which is composed of a corrugated core plate, an edge reinforced column and an end plate; the surface of the corrugated core plate is wavy; the edge reinforced column is fixed on the corrugated core On both sides of the plate, the column length direction of the edge reinforced column is parallel to the crest or trough of the corrugated core plate, and the upper and lower ends of the edge reinforced column are respectively flush with the upper and lower ends of the corrugated core plate; the two end plates They are respectively fixed on the upper and lower sides of the antinode core plate and the edge reinforced column; the reinforced concrete slab is wrapped on the outer side of the antinode core plate and the edge reinforced column. The invention has high field assembly degree, fast construction speed, high industrialization and commercialization degree, and more convenient connection with steel beams and floor slabs. The invention can combine the advantages of various existing anti-lateral force components, can not only bear the vertical load, but also can resist the horizontal action, and plays an important role in the seismic design of multi-high-rise and super high-rise building structure systems.

Description

A prefabricated concrete prefabricated composite wall with antinode core board

technical field

The invention belongs to the technical field of building wall structures, and in particular relates to a prefabricated concrete assembly type composite wall with antinode core boards.

Background technique

The reinforced concrete shear wall structure in the prior art is a high-rise and super high-rise building structure because of its good overall performance, high lateral stiffness, high bearing capacity, good resistance to wind loads and small and medium earthquakes, and excellent fire performance. The main lateral force-resisting member widely used. However, due to the high rigidity of the reinforced concrete shear wall, it will bear a large horizontal shear force under the action of the earthquake, resulting in early cracks, affecting the structural stiffness and bearing capacity, and it is not easy to repair after the earthquake. In addition, as the height of the building increases, the axial compression ratio of the shear wall continues to increase. In order to ensure the structural ductility, when the ordinary concrete shear wall is used, a larger wall thickness is required to meet the design requirements, which takes up a large space. , Increase the project cost.

In order to improve the ductility of reinforced concrete shear wall structures in the prior art and improve their energy dissipation capacity under earthquakes, various improvement measures have been proposed, including steel plate shear walls, slotted steel plate shear walls, and stiffened steel plate shear walls. force wall, restrained steel plate shear wall, etc. But there are following deficiencies respectively:

Due to the thickness of the steel plate shear wall is too thin, out-of-plane buckling will occur prematurely under the action of horizontal earthquake, and the energy dissipation capacity is low under the action of low cycle repeated load. If the steel plate with thicker thickness is used, it will not meet the economic requirements. Although the stiffened steel plate shear wall avoids premature out-of-plane buckling of the steel plate shear wall, it is difficult to deal with moisture-proof and fire-proof structures due to the characteristics of the steel structure itself. The restrained steel plate shear wall is a measure to avoid the out-of-plane buckling of the steel plate shear wall by hanging the concrete plate outside the steel plate shear wall. It can ensure that the shear wall has a certain energy dissipation capacity. A certain gap must be left to meet the deformation requirements of the core steel plate. Therefore, it is difficult to deal with the waterproof and fireproof structure of the joint between the constrained steel plate shear wall and the frame, and the external concrete slab increases the structural weight and reduces the seismic performance of the structure.

Therefore, the prior art lacks an anti-lateral force component that can not only bear vertical loads but also resist horizontal actions.

Contents of the invention

The present invention is to avoid the shortcomings of the above-mentioned prior art, and to provide a precast concrete with corrugated core slab with high degree of on-site assembly, fast construction speed, high degree of industrialization and commercialization, and more convenient connection with steel beams and floors. The prefabricated composite wall can combine the advantages of various existing anti-lateral force components, and can not only bear vertical loads, but also resist horizontal effects.

To achieve the above object, the present invention adopts the following technical solutions:

The invention relates to a prefabricated concrete assembled composite wall with antinode core boards. The composite wall is composed of antinode core board units and reinforced concrete slabs covering the outside of the antinode core board units.

Preferably, the antinode core plate unit is a unit component composed of an antinode core plate, an edge reinforcing column and an end plate; the surface of the antinode core plate is wavy; the edge reinforcing column is fixedly arranged on the On both sides of the core plate, the column length direction of the edge reinforcement column is parallel to the crest or trough of the core plate, and the upper and lower ends of the edge reinforcement column are respectively flush with the upper and lower ends of the core plate; There are two end plates, and the two end plates are respectively fixed on the upper and lower sides of the antinode core plate and the edge reinforcement column;

The reinforced concrete slab is wrapped on the outside of the antinode core slab and the edge reinforcement column.

Preferably, a number of through holes are evenly arranged on the crests or troughs of the antinode core plate, and metal shear parts are arranged at the through holes; the antinode core plate is connected with the reinforced concrete slab through the metal anti shear parts together.

Preferably, the edge reinforcement column is an I-shaped member composed of two flanges and a web, and the edge reinforcement column is welded and fixed to the end of the antinode core plate through the flange on one side; the edge reinforcement The ends of the flange and web of the column are butt-welded with the corresponding end plates respectively.

Preferably, the metal shear parts are bolts, the bolts are inserted into the through holes, and the bolts are provided with nuts on both sides of the antinode core plate.

Further, the end plate is provided with connection holes on both sides of the antinode core plate, and the end plate is also provided with connection holes in the area between the wing plate and the web of the edge reinforcement column, and the connection of the two end plates The positions and diameters of the holes are the same.

Furthermore, the connection holes on both sides of the antinode core plate are respectively set opposite to the peaks or troughs on the antinode core plate; the plane formed by connecting the hole center of each connection hole with the corresponding wave peak or trough is perpendicular to the end The face of the slab and parallel to the face of the flange of the edge stiffener column.

Preferably, the reinforced concrete slab is flush with the sides of the upper and lower two end slabs; the inside of the reinforced concrete slab is provided with vertical and horizontal steel mesh, and the reinforced concrete slab is aligned with the connecting holes on the end plates. A notch is reserved at the location.

Preferably, when the two compound walls are assembled, the lower end plate of the compound wall above is aligned with the upper end plate of the compound wall below, and the connecting holes at the corresponding positions on the two end plates Align, and then insert the connecting piece at the two aligned connecting holes through the notch.

Preferably, the antinode core plate is a steel plate with a thickness of 2-30 mm, and the thickness of the composite wall is 100-300 mm.

The beneficial effects of the present invention are:

1) The present invention overcomes the disadvantages of thicker reinforced concrete shear walls and larger self-weight; it also overcomes the shortcomings of some new types of lateral force-resistant components, such as difficult construction, large steel consumption, and difficult handling of waterproof structures; at the same time It takes advantage of the advantages of fast construction speed, high bearing capacity, good ductility and energy dissipation capacity of steel structures, and the characteristics of convenient opening and flexible layout of concrete shear walls. It has excellent seismic performance, saves formwork, convenient construction, and connection between steel plates. The advantages of reliability and steel consumption saving will have a good role in promoting the development of construction industrialization;

2) The antinode core plate unit in the present invention can be assembled and welded in the factory, and can realize the binding of steel mesh sheets in the factory, pouring and maintenance of the outer reinforced concrete slab in the factory, and bolt connection on site, without the need for formwork, and the construction speed is fast;

3) The antinode core plate prefabricated concrete prefabricated composite wall in the present invention can be flexibly arranged. It can not only be used as a vertical load-bearing component to transmit vertical loads in the structure, but also can be used as an important lateral force-resistant component in multi-story and high-rise buildings. Play an important role in the seismic design of the structural system of super high-rise buildings;

4) The antinode core plate prefabricated concrete assembly type composite wall of the present invention uses metal shear parts to tie the reinforced concrete slabs on both sides, which can ensure that the reinforced concrete slabs on both sides and the middle antinode core plate are closely connected and work together. The concrete slab provides lateral restraint for the mid-antinode core slab, avoiding early out-of-plane buckling of the mid-antinode core slab, and increasing the energy dissipation capacity of the prefabricated composite wall.

5) The metal shear parts interspersed on the antinode core plate of the present invention have multiple realization methods, that is, the metal shear parts can be directly welded to the through hole of the antinode core plate, and the present invention adopts a unique metal shear resistance Set the metal shear parts as bolts, and set nuts on both sides of the bolts located at the antinode core plate. The metal shear parts in the present invention not only play the role of pulling the reinforced concrete slabs on both sides , and it is convenient for construction and installation, which greatly improves the construction efficiency and reduces the difficulty of construction.

6) The edge reinforced column in the present invention can adopt various types of hot-rolled section steel, welded section steel and cold-formed thin-walled section steel. Its function is to cooperate with the corrugated core plate, which not only significantly enhances the ability of the composite wall to transmit vertical load, Moreover, the ability of the wall to resist lateral force is greatly improved.

7) The antinode core plate prefabricated concrete assembly type composite wall of the present invention has relatively large initial rigidity, good plasticity, stable hysteretic characteristics, and its anti-deformation ability is strong, and the amount of steel used for the structure is moderate. The corrugated core plate increases the vertical bearing capacity and lateral stiffness of the prefabricated composite wall.

Description of drawings

Figures 1 and 3 are structural schematic diagrams of the antinode core plate unit.

Figure 2 is a schematic structural view of the antinode core plate unit with one end plate removed.

Figures 4 and 5 are structural schematic diagrams of antinode core plate units installed with metal shear parts.

Fig. 6 is a connection structure diagram of two antinode core plate units.

Fig. 7 is a structural schematic diagram of two composite walls.

The symbols in the figure have the following meanings:

10-wave core plate unit

11-corrugation core plate 111-through hole 112-metal shear parts

12-edge reinforcement column 121-flange 122-web

13-end plate 131-connection hole

20-reinforced concrete slab 21-notch

30-connector

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

As shown in FIGS. 1-7 , a prefabricated concrete prefabricated composite wall with antinode core boards is composed of antinode core board units 10 and reinforced concrete slabs 20 covering the outside of the antinode core board units 10 .

As shown in Figures 1 to 5, the antinode core plate unit 10 is a unit component composed of an antinode core plate 11, an edge reinforcing column 12 and an end plate 13; as shown in Figures 1 to 3, the antinode core The board surface of the board 11 is wavy; the edge reinforcement column 12 is fixedly arranged on both sides of the antinode core plate 11, and the column length direction of the edge reinforcement column 12 is parallel to the peak or trough of the antinode core plate 11, and the edge The upper and lower ends of the reinforcement column 12 are respectively flush with the upper and lower ends of the antinode core plate 11; the two end plates 13 are arranged in two, and the two end plates are respectively fixed on the antinode core plate 11 and the edge reinforcement column 12 the upper and lower sides of

As shown in FIG. 7 , the reinforced concrete slab 20 is wrapped on the outside of the antinode core plate 11 and the edge reinforcement column 12 .

As shown in Figures 2 and 3, a number of through holes 111 are evenly arranged on the peaks or troughs of the antinode core plate 11, and metal shear members 112 are arranged at the through holes 111; the antinode core plate 11 It is connected with the reinforced concrete slab 20 through the metal shearing member 112 .

The metal shear parts 112 can be selected as metal rods or metal cylinders. During construction, the metal rods or metal cylinders are inserted into the through holes 111, and then the metal rods or metal cylinders are directly welded to the through holes 111. As shown in Figures 4 and 5, the metal shear members 112 in this embodiment are bolts, and the bolts are inserted into the through holes 111, and the bolts are located on both sides of the antinode core plate 11. nuts. Therefore, during construction, it is only necessary to insert the bolts in the through holes 111, and then respectively screw nuts on the threaded shafts at both ends of the bolts, so that the metal shear member 112 in the present invention is not only convenient to obtain materials, but also Greatly improved construction efficiency.

As shown in Figures 1, 2, and 4, the edge reinforcing column 12 is an I-shaped member composed of two flanges 121 and a web 122, and the edge reinforcing column 12 passes through the flange 121 on one side and the antinode. The ends of the core plate 11 are fixed together by welding, as shown in Figures 2 and 4, the end connected to the wing plate 121 of the antinode core plate 11 and the edge reinforcement column is set to a straight plate surface; Ends of the wing plate 121 and the web plate 122 of the reinforcing column 12 are butt-welded with the corresponding end plate 13 respectively.

The edge reinforced columns can be directly made of I-beams of corresponding specifications, various hot-rolled steels, welded steels and cold-formed thin-walled steels, or processed on site.

As shown in Figures 1, 2, 4, and 5, the end plate 13 is provided with connection holes 131 on both sides of the antinode core plate 11, and the end plate 13 is also equipped with the wing plate 121 and the web 122 of the edge reinforcement column 12. A connection hole 131 is provided in the area between them, and the positions and diameters of the connection holes of the two end plates 13 are the same.

As shown in Figures 2 and 4, the connection holes 131 on both sides of the antinode core plate 11 are respectively arranged opposite to the peaks or troughs on the antinode core plate 11; the hole center of each connection hole is connected to the corresponding peak or trough The formed plane is perpendicular to the surface of the end plate 13 and parallel to the surface of the wing plate 121 of the edge reinforcement column 12 .

The meaning of the above technical structure is: each connection hole 131 is set between two adjacent wave crests or troughs, taking Figure 2 as an example, taking the upper side of the cross-section of the antinode core plate 11 as the upper side, the antinode core plate 11 The lower side of the cross-section is the bottom, then the top of the antinode core plate 11 is the wave crests arranged in sequence, and the bottom of the antinode core plate 11 is the wave troughs arranged in sequence, so that the connection hole 131 above the antinode core plate 11 The hole center of the connection hole 131 arranged between the adjacent wave crests and above the antinode core plate 11 is opposite to the wave valley between the adjacent wave peaks, and the connection hole 131 is connected to the opposite wave valley. The plane is perpendicular to the plate surface of the end plate 13, and parallel to the plate surface of the wing plate 121 of the edge reinforcement column 12; and the connecting hole 131 under the antinode core plate 11 is arranged between adjacent wave troughs, and is in the wave The hole center of the connection hole 131 below the web core plate 11 is set opposite to the wave crest between the adjacent troughs, and the plane formed by connecting the connection hole 131 with the wave crest opposite to it is perpendicular to the plate surface of the end plate 13 and parallel to the surface of the end plate 13. The surface of the wing plate 121 of the column 12 is reinforced at the edge.

As shown in Figure 7, the reinforced concrete slab 20 is flush with the sides of the upper and lower end plates 13; the inside of the reinforced concrete slab 20 is provided with vertical and horizontal reinforcement meshes, and the reinforced concrete slab 20 is aligned with the end slabs. Notches 21 are reserved at corresponding positions of the connecting holes 131 on the board 13 .

As shown in Figure 7, when two compound walls are assembled, align the lower end plate of the upper compound wall with the upper end plate of the lower compound wall, and make the corresponding positions of the two end plates Align the connecting holes, and then insert the connecting piece 30 through the notch 21 at the two aligned connecting holes.

That is to say, by reserving the connection holes 131 and the notches 21, the compound walls in the present invention can be connected to each other more conveniently and form a larger-format wall.

Preferably, for the upper structural members of multi-layer shear wall structures or high-rise and super high-rise shear wall structures, the antinode core plate 11 should adopt thin steel plates with a thickness of 2 to 6 mm, and the thickness of the composite wall is 100 mm. ~200mm; the antinode core plate 11 in the underlying structural components should be medium-thick steel plate with a thickness of 8-30mm, and the thickness of the composite wall is 120-250mm.

For high-rise and super-high-rise frame-shear wall structures, pure shear wall structures, frame tubes and bottom layer structural members of the tube structure, the antinode core plate 11 should be a medium-thick steel plate with a thickness of 8-30mm, composite The thickness of the wall is 150-300mm.

Claims (10)

1. an antinode central layer precast concrete assembled composite wall, it is characterised in that: this composite wall is by antinode central layer unit (10) and be coated on antinode central layer unit (10) outside armoured concrete slab (20) constitute.

Antinode central layer precast concrete assembled composite wall the most according to claim 1, it is characterised in that: described antinode core Slab element (10) is the unit member being made up of antinode central layer (11), Edge Enhancement post (12) and end plate (13)；Described antinode core The plate face of plate (11) is wavy；Described Edge Enhancement post (12) is fixedly installed on the both sides of antinode central layer (11), Edge Enhancement Parallel with crest or the trough of antinode central layer (11) in the column length direction of post (12), and the two ends up and down of Edge Enhancement post (12) are divided Not and the two ends flush up and down of antinode central layer (11)；Described end plate (13) is set to two, and two end plates are installed in ripple respectively Abdomen central layer (11) and the both sides up and down of Edge Enhancement post (12)；

Described armoured concrete slab (20) is coated on antinode central layer (11) and the outside of Edge Enhancement post (12).

Antinode central layer precast concrete assembled composite wall the most according to claim 2, it is characterised in that: described antinode core Being laid with some through holes (111) on the crest of plate (11) or trough equably, described through hole (111) place is provided with metal shearing-resistant member (112)；Described antinode central layer (11) is linked together with armoured concrete slab (20) by metal shearing-resistant member (112).

Antinode central layer precast concrete assembled composite wall the most according to claim 2, it is characterised in that: described edge adds Strong post (12) is the i-shape component being made up of two wing plates (121) and web (122), and Edge Enhancement post (12) is by its side Wing plate (121) be welded and fixed with the end of antinode central layer (11) together with；The wing plate (121) of described Edge Enhancement post (12) and The end of web (122) connects with corresponding end plate (13) butt welding respectively.

Antinode central layer precast concrete assembled composite wall the most according to claim 3, it is characterised in that: described metal resists Cutting part (112) is bolt, and bolt is interspersed in described through hole (111), and the both sides shaft being positioned at antinode central layer (11) of bolt On be equipped with nut.

Antinode central layer precast concrete assembled composite wall the most according to claim 4, it is characterised in that: described end plate (13) both sides at antinode central layer (11) are provided with connecting hole (131), and end plate (13) is also at the wing plate of Edge Enhancement post (12) (121) region and between web (122) is provided with connecting hole (131), and the position of the connecting hole of two end plates (13) and hole Footpath is the most identical.

Antinode central layer precast concrete assembled composite wall the most according to claim 6, it is characterised in that: it is in antinode core The connecting hole (131) of plate (11) both sides is oppositely arranged with the crest on antinode central layer (11) or trough respectively；Each connecting hole The plane that center, hole crest corresponding thereto or trough are connected and constitute is perpendicular to the plate face of end plate (13), and is parallel to edge The plate face of the wing plate (121) of reinforcing prop (12).

Antinode central layer precast concrete assembled composite wall the most according to claim 6, it is characterised in that: described reinforcing bar mixes Concrete board (20) and the side flush of upper/lower terminal plate (13)；The inside of described armoured concrete slab (20) is arranged vertically and horizontally Bar-mat reinforcement, armoured concrete slab (20) also reserves notch in the corresponding position with the connecting hole (131) on end plate (13) (21)。

Antinode central layer precast concrete assembled composite wall the most according to claim 8, it is characterised in that: two composite walls During assembling, will be in top the downside end plate of composite wall align with the upside end plate of the composite wall being below, and make this two The connecting hole at opposite position on individual end plate aligns, and is then inserted even in the connection hole of two alignments by notch (21) Fitting (30).

10. according to the antinode central layer precast concrete assembled composite wall described in any one of claim 1～9, it is characterised in that: Described antinode central layer (11) be thickness be the steel plate of 2～30mm, composite wall thickness of wall body is 100～300mm.