CN212802102U - Shear wall structure - Google Patents

Abstract

The utility model discloses a shear force wall structure, including metal crate, two metal sheets and one to many concrete slabs, the edge all around of metal sheet and metal crate fixed connection, concrete slab establishes metal crate's corner portion, concrete slab's wherein one side is fixed on the internal face of one of them metal sheet, encloses between two metal sheets and the metal crate and forms a cavity, pour into the high polymer elastomer in the cavity. The utility model discloses can be when overall structure bears the horizontal load, will warp and concentrate on shear force wall middle part, effectively slow down overall structure rigidity degradation speed, have good ductility and power consumption ability. Other related auxiliary components and arrangement are not needed during assembly, a shear connector between the metal plate and the concrete is replaced, the construction cost is reduced, and the phenomena of stress residual and stress concentration at certain positions are avoided.

Description

Shear wall structure

Technical Field

The utility model relates to a civil construction engineering technical field, in particular to shear wall structure.

Background

As a commonly used lateral force resistant component, the shear wall can effectively resist the action of horizontal load, is widely used in a middle-high-rise structure, and mainly comprises the following components:

(1) metal sheet shear wall: the metal plate shear wall is easy to generate out-of-plane buckling under the action of reciprocating horizontal load, so that overlarge deformation and noise are caused, the energy consumption curve of the shear wall is spindle-shaped, the energy consumption capability is obviously reduced, the bearing capability of the structure is reduced, the overall safety is influenced, and the metal plate shear wall is difficult to repair after an earthquake due to large deformation.

(2) Ribbed metal sheet shear wall: by applying a stiffening rib to the metal sheet, the out-of-plane buckling of the metal sheet is restrained, but the amount of steel consumption increases significantly. Meanwhile, the load borne by the structure in the earthquake is increased by improving the rigidity of the shear wall, and the thickness of the metal plate shear wall can be improved only by further designing and improving the thickness of the metal plate shear wall, so that a vicious cycle is formed.

(3) Concrete shear wall: after the concrete shear wall and the frame are combined for use, the overall rigidity is high, once earthquake load is borne, stress failure of the shear wall usually starts from the corner of the frame, and then a stud connected with the frame and the shear wall are subjected to fatigue fracture, in the cracking process, the structural rigidity is degraded at an excessively high speed, performance of the overall structure is not favorably exerted, and the difficulty of repairing after an earthquake is high and the cost is high.

(4) Metal plate-concrete composite shear wall: the existing metal plate-concrete combined shear wall mainly adopts the mode combination of adding a concrete plate in the middle of a metal plate or arranging the metal plate in the middle of the concrete plate, and the like, so that the buckling bearing capacity of the metal plate can be effectively improved, but bolts or shear connectors are required to be adopted to connect the metal plate and the concrete plate during construction, so that the construction difficulty is high, and the construction period is long. Moreover, the shear connector needs to be welded on a metal plate or a steel frame, and obvious welding residual stress and stress concentration phenomena are easy to occur at the welding parts. In addition, in earthquake damage, the corners of the combined shear wall are easy to damage, the safety of a frame joint area is affected, the overall rigidity of the structure is obviously reduced, and the earthquake resistance of the structure is weakened.

(5) According to the metal plate-high polymer material combined shear wall, as shown in the initiated patent (a shear wall and a production method thereof, CN201410029069.7), high polymer material polyurethane is poured between two layers of metal plates to form a novel combined shear wall, the shear wall is high in construction speed, connecting pieces are not needed to be welded, the problem of connection between the metal plates and a core material can be effectively solved, but the rigidity distribution of the rigidity of the corner part and the middle part of the shear wall is unreasonable, so that the corner part of the shear wall is firstly damaged, and the shear wall in the middle part cannot fully exert the energy consumption capacity.

Disclosure of Invention

To the above problem, an object of the utility model is to provide a shear wall structure, the shear wall rigidity distribution that mentions among the solution background art is unreasonable, rigidity degradation is fast, frame node fragile problem.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a shear wall structure comprises a metal frame, two metal plates and one or more concrete plates, wherein the peripheral edges of the metal plates are fixedly connected with the metal frame, the concrete plates are arranged at the corner parts of the metal frame, one surface of each concrete plate is fixed on the inner wall surface of one metal plate, a cavity is formed between the two metal plates and the metal frame in a surrounding mode, and a high polymer elastomer is poured into the cavity.

Preferably, a filling opening and one or more exhaust openings are formed in the wall surface of one of the two metal plates, the filling opening is formed in the lower portion of the metal plate, the exhaust openings are formed in the upper portion of the metal plate, and round metal plates for plugging the filling opening and the exhaust openings are respectively arranged at the filling opening and the exhaust openings. Through setting up the mouth of pouring into and the combination of gas vent the cavity for pour into the high molecular polymer elastomer, pour into and accomplish after and carry out the shutoff through the circle metal sheet.

Preferably, the thickness ratio of the metal plate to the concrete plate is 1: 3-5.

Preferably, the high molecular polymer elastomer is polyurethane. By utilizing good ductility and energy consumption capability of polyurethane, the polyurethane is preferably used as a high-molecular polymer elastomer, two metal plates can be restrained, and an artificially-arranged middle weak area is formed at the same time, so that deformation is concentrated in the middle, the rigidity degradation speed of the whole structure is slowed down, and a metal frame is protected.

Preferably, the concrete slab is an isosceles triangle concrete slab, and two waist sides of the concrete slab are attached to the inner wall of the corner of the metal frame. Because the metal frame corner part always cracks firstly, and the crack development direction is 45 degrees, the concrete slab in an isosceles triangle shape is additionally arranged on the metal frame corner part, so that the rigidity of the metal frame corner part is improved, and the deformation is more accurately concentrated to the middle part of the shear wall.

Preferably, the waist length value of the isosceles triangle concrete slab is 1/8-1/4 of the smaller value of the floor height value or the span value.

Preferably, the outer surface of the concrete slab is a sand blasting surface, and the concrete slab is bonded with the metal plate on one side through an adhesive layer. The outer surface of the concrete slab is treated as the sand blasting surface, so that the bonding between the concrete slab and the two metal plates is facilitated, and the bonding effect is optimized.

Preferably, the material of the adhesive layer is polyurethane. The polyurethane, the concrete and the metal plates have good bonding capability, and are used as adhesive layers for bonding the concrete plate and the two metal plates so as to replace a shear connector required by connection between the two metal plates and the concrete plate, load transmission between the two metal plates is carried out through the adhesive layers, and the problems of stress residual and stress concentration existing in welding of the shear connector are solved.

Preferably, the thickness ratio of the metal plate to the adhesive layer is 1: 3-5.

Preferably, the metal plate is a steel plate.

The utility model discloses following beneficial effect has:

(1) because strong node structure is in bearing seismic load in the antidetonation requirement of china, the position that shear force wall and beam column nodal connection are connected destroys most easily, and these positions destroy the back, the decline that the rigidity of shear force wall can be obvious directly influences the atress distribution of frame and shear force wall, transmits great seismic load to wall body frame on, can cause the damage of main frame structure, and the utility model discloses a set up concrete slab in metal frame bight, strengthen the rigidity in metal frame nodal region, the middle part then adopts polyurethane and metal sheet to combine to this people is for creating the weak region at shear force wall middle part. When an earthquake occurs, deformation transfer is concentrated on the metal plate-polyurethane combined structure in the middle of the shear wall, and because polyurethane has good ductility and shear strength, energy can be effectively consumed, so that the rigidity degradation speed of the whole structure is slowed down, and a metal frame is protected;

(2) the cavity formed between the two metal plates and the metal frame is filled with liquid polyurethane, and auxiliary components such as a template and the like are not needed for auxiliary construction, so that the construction cost can be effectively reduced;

(3) the two metal plates are restrained by the inner concrete plate and the polyurethane core plate, so that the height-thickness ratio of the wall body is obviously improved, and the out-of-plane displacement of the metal plates is limited, thereby avoiding the reduction of the integral rigidity and the energy consumption capability caused by instability, and more fully playing the energy consumption role of the metal plates in the earthquake;

(4) the polyurethane is used for bonding the concrete slab and the two metal plates to replace a shear connector between the metal plates and the concrete, so that the problems of local stress residue and stress concentration are avoided;

(5) the combined shear wall can adopt a repairing method similar to that of a metal plate shear wall after an earthquake, and the later maintenance cost can be reduced.

Drawings

FIG. 1 is a schematic view of a shear wall;

FIG. 2 is a schematic cross-sectional view of a composite shear wall;

fig. 3 is a longitudinal cross-sectional view of a shear wall.

Description of the main component symbols: 1. a metal frame; 2. a concrete slab; 3. a metal plate; 4. an infusion port; 5. an exhaust port; 6. and an adhesive layer.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Example one

A shear wall structure as shown in fig. 1-3, which comprises a metal frame 1, two metal plates 3 and one or more concrete plates 2, wherein the peripheral edges of the metal plates 3 are fixedly connected with the metal frame 1, the concrete plates 2 are arranged at the corner parts of the metal frame 1, one surface of each concrete plate 2 is fixed on the inner wall surface of one of the metal plates 3, a cavity is formed between each two metal plates 3 and the metal frame 1 in a surrounding manner, and a high polymer elastomer is poured into the cavity. The wall surface of one of the two metal plates 3 is provided with a filling opening 4 and one or more exhaust openings 5, the filling opening 4 is arranged at the lower part of the metal plate 3, the exhaust openings 5 are arranged at the upper part of the metal plate 3, and the filling opening 4 and the exhaust openings 5 are respectively provided with round metal plates for plugging the metal plates. The thickness ratio of the metal plate 3 to the concrete plate 2 is 1: 3-5. The high molecular polymer elastomer is polyurethane. The concrete slab 2 is an isosceles triangle concrete slab 2, and two waist sides of the concrete slab are attached to the inner wall of the corner of the metal frame 1. The waist length value of the isosceles triangle concrete slab 2 is 1/8-1/4 of the smaller value of the floor height value or the span value. The outer surface of the concrete plate 2 is a sand blasting surface, and the concrete plate 2 is bonded with the metal plate 3 on one side through an adhesive layer 6. The adhesive layer 6 is made of polyurethane. The thickness ratio of the metal plate 3 to the adhesive layer 6 is 1: 3-5. The metal plate 3 is a steel plate.

During construction, the concrete slab 2 is prefabricated, and after the prefabrication and the formwork removal, the outer surface of the concrete slab is processed into a rough sand blasting surface in a sand blasting mode and the like, so that a better bonding effect is achieved.

After the concrete slab is prefabricated, polyurethane is selected as an adhesive to bond and solidify the concrete slab on the metal plate 3 on one side to form an adhesive layer 6, so that a shear connector between the concrete slab 2 and the metal plate 3 is replaced, and the problems of stress residual and stress concentration are avoided.

The metal plate 3 and the metal frame 1 are welded, the connection mode is similar to that of a traditional metal plate 3 shear wall, and the connection method is simple and convenient. The metal frame 1 must be installed in place prior to welding to reduce the effect of vertical loads on the shear wall.

After the welding is completed, polyurethane is injected into the cavity formed by the two metal plates 3 and the metal frame 1 through the injection opening 4, and the polyurethane curing time is usually 7min, so the injection work must be completed within 7 min.

After the pouring is finished, the circular metal plate is directly used for sticking and sealing the pouring opening 4 and the exhaust opening 5 by utilizing the bonding characteristic of polyurethane to the metal plate without welding with the metal plate 3 at the periphery.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A shear wall structure which characterized in that: the concrete slab comprises a metal frame, two metal plates and one or more concrete plates, wherein the peripheral edges of the metal plates are fixedly connected with the metal frame, the concrete plates are arranged at the corner parts of the metal frame, one surface of each concrete plate is fixed on the inner wall surface of one of the metal plates, a cavity is formed between the two metal plates and the metal frame in a surrounding mode, and a high polymer elastomer is poured into the cavity.

2. A shear wall structure as claimed in claim 1, wherein: the wall surface of one of the two metal plates is provided with a filling opening and one or more exhaust openings, the filling opening is arranged at the lower part of the metal plate, the exhaust openings are arranged at the upper part of the metal plate, and the filling opening and the exhaust openings are respectively provided with a round metal plate for plugging the filling opening and the exhaust openings.

3. A shear wall structure as claimed in claim 1, wherein: the thickness ratio of the metal plate to the concrete plate is 1: 3-5.

4. A shear wall structure as claimed in claim 1, wherein: the high molecular polymer elastomer is polyurethane.

5. A shear wall structure as claimed in claim 1, wherein: the concrete slab is an isosceles triangle concrete slab, and two waist sides of the concrete slab are attached to the inner wall of the metal frame corner.

6. A shear wall structure according to claim 5, wherein: the waist length value of the isosceles triangle concrete slab is 1/8-1/4 of the smaller value of the floor height value or the span value.

7. A shear wall structure as claimed in claim 1, wherein: the outer surface of the concrete slab is a sand blasting surface, and the concrete slab is bonded with the metal plate on one side through the adhesive layer.

8. A shear wall structure as claimed in claim 7, wherein: the adhesive layer is made of polyurethane.

9. A shear wall structure as claimed in claim 7, wherein: the thickness ratio of the metal plate to the adhesive layer is 1: 3-5.

10. A shear wall structure as claimed in claim 1, wherein: the metal plate is a steel plate.

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