A prefabricated double-steel-tube dense-rib concrete composite shear wall

Abstract

This invention relates to a novel shear wall, and more particularly to a prefabricated double-steel-tube ribbed concrete composite shear wall, belonging to the field of structural engineering technology. This shear wall consists of a steel plate on the wall surface, concrete inside the wall, thermal insulation materials, double-steel-tube concrete columns, connecting angle steel, and square tie rods. The steel plate on the wall surface is made of thin steel plate; the internal thermal insulation materials are materials such as rock wool; the double-steel-tube concrete columns have round steel tubes inside and square steel tubes outside. The prefabricated steel plate-ribbed concrete composite shear wall provided by this invention is a novel lateral force resisting component for high-rise structures or other structures. It features light weight, good seismic performance, and high ductility, making it an excellent lateral force resisting component.

Description

TECHNICAL FIELD

[0001] The application relates to a new type of shear wall, in particular to a fabricated double-steel-pipe dense-rib concrete composite shear wall. BACKGROUND

[0002] With the continuous improvement of the economy of China, in order to adapt to the needs of domestic residents and meet the land competition between people and the environment, high-rise buildings gradually become an important module in the development of civil engineering. Since the shear wall structure has large bearing capacity, large lateral stiffness, good seismic performance, and the indoor space of the structure is neat and flat, the space utilization rate is high, which is very consistent with the functional design requirements of people on residential space, so the shear wall structure is widely applied and promoted in high-rise buildings.

[0003] With the increase of the height of the building, if the shear wall adopts the traditional reinforced concrete form, the thickness will be too large to affect the use, and the economy is poor and the safety is low. Therefore, the steel-concrete composite shear wall emerges as the times require.

[0004] In the prior art, the steel plate-concrete composite shear wall is widely used. The steel plate-concrete composite shear wall mainly includes three structural forms: one is a steel plate-outer concrete composite shear wall, but the concrete is not effectively constrained in the periphery of the steel plate, the stress performance is not improved, the concrete is prone to crack, and the concrete is prone to crush and fall off after the component reaches the ultimate bearing capacity; second is a single-side-steel plate concrete composite shear wall, which does not effectively utilize the strength of the concrete wall, increases the load while improving the buckling strength of the steel plate, and increases the seismic response of the structure under the action of the earthquake. The concrete is not reliably constrained after being damaged, and is prone to fall off after being damaged; third is a double-steel-plate inner filled concrete composite shear wall, but in actual application, it still has the defects of large stiffness and unsatisfactory ductility. The large stiffness is not convenient for the stiffness distribution and adjustment of the structure, so that the stiffness of the whole structure is excessively concentrated in the double-steel-plate concrete composite shear wall, which is not convenient for realizing the multiple seismic defense lines and overall bearing advocated in the specification.

[0005] The application( Figure 1The assembled double-steel-pipe dense-rib concrete composite shear wall is a new type of double-steel-pipe dense-rib concrete composite shear wall which is improved and broken through the double-steel-pipe dense-rib concrete composite shear wall in view of the above shortcomings. The wall is partially prefabricated, the internal heat insulation and heat preservation material is fixed on the steel plate through the pull bolt, the connection between the surface steel plates of the wall is realized through the connecting angle steel and the square patch, the surface steel plate of the wall is welded with the steel pipe, and the plain concrete is poured inward, so that the originally integrated shear wall is divided into a dense-rib wall, a surface steel plate and an internal heat insulation and heat preservation material, the purpose of reducing the lateral stiffness of the wall and further increasing the ductility is achieved. It should be noted that the size and placement position of the internal heat insulation and heat preservation block can be adjusted according to the actual engineering conditions. Overall, the assembled double-steel-pipe dense-rib concrete composite shear wall can further improve the mechanical properties and seismic performance of the double-steel-pipe dense-rib concrete composite shear wall. SUMMARY

[0006] The assembled double-steel-pipe dense-rib concrete composite shear wall is a new type of double-steel-pipe dense-rib concrete composite shear wall which is improved and broken through the double-steel-pipe dense-rib concrete composite shear wall in view of the above shortcomings. The wall is partially prefabricated, the internal heat insulation and heat preservation material is fixed on the steel plate through the pull bolt, the connection between the surface steel plates of the wall is realized through the connecting angle steel and the square patch, the surface steel plate of the wall is welded with the steel pipe, and the plain concrete is poured inward, so that the originally integrated shear wall is divided into a dense-rib wall, a surface steel plate and an internal heat insulation and heat preservation material, the purpose of reducing the lateral stiffness of the wall and further increasing the ductility is achieved. It should be noted that the size and placement position of the internal heat insulation and heat preservation block can be adjusted according to the actual engineering conditions. Overall, the assembled double-steel-pipe dense-rib concrete composite shear wall can further improve the mechanical properties and seismic performance of the double-steel-pipe dense-rib concrete composite shear wall.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows: the present application provides an assembled double-steel-pipe dense-rib concrete composite shear wall as shown in Figure 1 The whole is composed of two double-steel-pipe concrete columns 2, two wall surface steel plates 1, a wall internal ribbed plain concrete 2 and an internal heat insulation and heat preservation material 4. The wall is partially prefabricated, the heat insulation and heat preservation material 4 is connected with the two wall surface steel plates 1 through the pull bolt 8; the wall internal ribbed plain concrete 3 is connected with the wall surface steel plate through the connecting angle steel 5 and the square patch 6 welded on the steel plate to ensure the cooperative work between them. The double-steel-pipe concrete columns 2 are arranged on both sides of the shear wall, the internal part of the double-steel-pipe concrete column is a round steel pipe, and the external part is a square steel pipe; the two wall surface steel plates 1 are connected through the connecting angle steel 5 and the square patch 6; the connecting angle steel is welded with the double-steel-pipe concrete column 2 and the wall surface steel plate 1; and the square patch 6 is welded with the connecting angle steel 5.

[0008] Compared with the traditional double-steel-pipe concrete composite shear wall, the present application has the following advantages and effects:

[0009] 1) The amount of concrete is reduced, the self-weight of the structure is reduced, and the seismic action is reduced;

[0010] 2) According to the actual engineering needs, porous energy dissipation materials such as foamed aluminum can be placed in the heat insulation and heat preservation block to further enhance the seismic performance of the structure.

[0011] 3) Assembly type construction, reduce the construction period, reduce pollution;

[0012] 4) Properly reduce the stiffness, facilitate the stiffness adjustment of the structure, and effectively reduce the temperature stress.

[0013] In summary, the present application improves the seismic performance of the double-steel plate-concrete composite shear wall on the one hand, and can speed up the construction progress, energy saving and environmental protection on the other hand. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an internal detail view of an assembly type double-steel pipe dense rib concrete composite shear wall.

[0015] Figure 2 It is a double-steel pipe concrete detail view.

[0016] Figure 3 Schematic diagram of heat insulation device

[0017] Figure 4 Connection diagram of heat insulation device and wall body.

[0018] Figure 5 It is a schematic diagram of a tension bolt.

[0019] Markings in the figure:

[0020] 1 - wall surface steel plate; 2 - double-steel pipe concrete; 2-1 - square steel pipe; 2-2 - confined concrete; 2-3 - round steel pipe; 3 - wall interior concrete; 4 - heat insulation device; 4-1 - fireproof and waterproof coating; 4-2 - heat insulation device; 4-3 - soundproof board; 5 - connecting angle steel; 6 - square patch; 7 - shear bolt; 8 - tension bolt; DETAILED DESCRIPTION

[0021] The present application will be described in detail below in combination with the drawings.

[0022] The Figure 1 The present application is an assembly type double-steel pipe dense rib concrete composite shear wall. The wall body is partially prefabricated, and the heat insulation material 4 and the two wall surface steel plates 1 are connected by the tension bolt 8. The wall surface steel plates are connected by the connecting angle steel 5 and the square patch 6. The wall interior concrete 3 and the wall surface steel plate 1 are connected by the connecting angle steel 5 and the square patch 6 welded on the steel plate to ensure the cooperative work between them. The shear wall is provided with double-steel pipe concrete columns 2 on both sides, the double-steel pipe concrete column 2 is internally provided with a round steel pipe and externally provided with a square steel pipe. The connecting angle steel 5 is welded between the double-steel pipe concrete column 2 and the wall surface steel plate 1. The square patch 6 is welded with the connecting angle steel 5.

[0023] The assembled double-steel-pipe dense-rib concrete composite shear wall is an improvement on the traditional double-steel-plate-concrete composite shear wall, fills the wall body with heat insulation and energy dissipation materials such as rock wool or foamed aluminum, reduces the amount of concrete, lowers the structural dead weight, reduces the seismic action, appropriately lowers the rigidity, facilitates the rigidity adjustment of the structure, effectively reduces the temperature stress, adopts the assembled construction, reduces the construction period and lowers the pollution; in general, the application improves the seismic performance of the double-steel-plate-concrete composite shear wall on one hand, and speeds up the construction progress, saves energy and protects the environment on the other hand.

Claims

1. A fabricated double steel tube dense ribbed concrete composite shear wall, characterized in that: The wall body is composed of two wall surface steel plates, inner plain concrete, heat preservation and insulation material, and double steel pipe concrete columns arranged on both sides of the shear wall, and the wall body is partially prefabricated, the heat preservation and insulation material is arranged between the two wall surface steel plates and fixed by tension bolts, connecting angle steels and square fillets are welded on the wall surface steel plates, the inner plain concrete is connected with the wall surface steel plates through the connecting angle steels and square fillets welded on the wall surface steel plates, the double steel pipe concrete columns and the wall surface steel plates are connected together by welding to serve as a formwork for pouring inner concrete, then plain concrete is poured into the formwork to form dense ribs, and the heat preservation and insulation material is arranged between the dense ribs, the double steel pipe concrete columns adopt a double steel pipe form with an inner circle and an outer square, the connecting angle steels are welded with the double steel pipe concrete columns and the wall surface steel plates, and the square fillets are welded with the connecting angle steels, the wall surface steel plates adopt low yield point high ductility or high strength high ductility steel materials, and shear bolt nails are arranged in the contact area between the square steel pipes and the inner plain concrete, and the heat preservation and insulation material comprises a fireproof and waterproof coating and a sound insulation board.

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