CN105937277A - Connection Structure of L-shaped Shear Wall Edge Members - Google Patents

Abstract

The invention belongs to a connection structure of an L-shaped shear wall edge component of a building component connection node structure. The two wall limbs of the cast-in-place concrete L-shaped edge component are respectively connected with a prefabricated wall in a straight line, and the two prefabricated walls are connected in a straight line. The prefabricated slabs on the side are laminated with the cast-in-place concrete in the middle, and the truss reinforcement is sandwiched between the prefabricated slabs to connect with the inner side of the prefabricated slabs. The horizontal ribs of the walls in the prefabricated slabs One end protrudes and is embedded in the corresponding wall limb of the cast-in-situ concrete L-shaped edge member, and the horizontal ribs of the wall in two directions do not intersect each other. The beneficial effects are: using the horizontal ribs in the prefabricated wall to extend into the L-shaped edge members respectively, it can save materials, save labor, reduce the difficulty of on-site construction, and meet the requirements of large-scale and rapid construction, and it is compatible with the current seismic joints. Approach fit.

Description

L The Connection Structure of Edge Members of Type Shear Wall

technical field

The invention belongs to a connection node structure of building components in the field of construction engineering, and in particular relates to an edge structure of a shear wall.

Background technique

In order to solve the problems of extensive production and energy saving and emission reduction in my country's housing industry construction, construction industrialization technology has become a feasible direction for the development of housing construction industry. The laminated slab concrete shear wall structure is a new type of structural system introduced in line with the trend of housing industrialization. After the introduction, the joints are modified to make it closer to the requirements of China's earthquake resistance regulations.

The current method of L-shaped connection joints of laminated slab concrete shear walls is as follows: the two wall limbs of the cast-in-situ concrete L-shaped edge components are respectively connected to the prefabricated wall body in a straight line, and the two sides of the prefabricated wall body are provided with prefabricated slabs and the middle existing The poured concrete is superimposed, and the truss steel bars are sandwiched between the prefabricated slabs to connect with the inner side of the prefabricated slabs. The sides of the two prefabricated walls have no steel bars, and both sides are connected by the method of placing additional horizontal steel bars by on-site workers. The additional horizontal One end of the reinforcement is buried in the space between the prefabricated slabs, and the other end extends into the corresponding wall of the cast-in-situ concrete L-shaped edge member. This kind of joint has the following problems: 1. It needs to add more additional horizontal reinforcement. 2. It is necessary to increase the labor on site, which also increases the cost of the construction period. 3. There are differences with the current seismic construction practices. 4. The steel bars in the joint connection area are too dense, and the additional horizontal steel bars conflict with the laying of the truss steel bars, which is inconvenient for construction. Therefore the current connection is not suitable for large-scale, rapid construction requirements.

Contents of the invention

The technical problem to be solved by the present invention is to provide a connection structure of edge members of L-shaped shear walls. Adopting this joint method can avoid the laying of additional horizontal steel bars in the construction process, reduce the workload of on-site construction, and at the same time meet the requirements of the edge members. The anti-seismic force makes the L-shaped connection more effective and saves manpower and material resources.

The technical solution of the present invention is: the two wall limbs of the cast-in-place concrete L-shaped edge member are respectively connected to the prefabricated wall body in a straight line, and the two sides of the prefabricated wall body are provided with prefabricated panels and the cast-in-place concrete in the middle are superimposed to form. There are also truss steel bars between the prefabricated slabs to connect with the inner side of the prefabricated slabs, and the horizontal ribs of the walls in the prefabricated slabs protrude from one end of the prefabricated slabs and are embedded in the L-shaped edge of the cast-in-situ concrete In the corresponding wall pier of the component, the horizontal ribs of the wall in two directions do not intersect each other.

In the present invention, the length and width of the wall piers in two directions of the cast-in-situ concrete L-shaped edge member can be in accordance with the requirements of the current structural code and belong to the existing structural requirements. The prefabricated wall adopts prefabricated panels and middle truss reinforcement, which can be directly processed and produced in the factory, and the quality is guaranteed, and the skin on both sides of the wall does not need to be redecorated. Moreover, during construction, the site only needs to set formwork in the edge member area. The purpose of adding truss reinforcement in the prefabricated wall is to connect the prefabricated panels on both sides into a whole, so as to ensure the overall rigidity of the wall during transportation and hoisting. The horizontal ribs of the wall in the prefabricated panel extend out of the prefabricated wall and extend into the corresponding wall limbs of the L-shaped edge components without intersecting each other. It not only replaces the connecting function of the additional horizontal steel bar in the prior art, but also realizes the mechanical characteristics of the L-shaped edge member, which is consistent with the code for seismic design of buildings (GB 50011-2010) and the technical specification for concrete structures of high-rise buildings (JGJ3-2010). Computational and structural requirements are consistent. The tie bars and stirrups of the cast-in-place concrete L-shaped edge member itself belong to the prior art, and are not within the protection scope of the present invention. The length of the horizontal reinforcement of the wall protruding from the prefabricated wall can be determined according to the construction requirements of the existing structural code. In order to reduce the difficulty of on-site construction, the horizontal bars of the wall extending into the cast-in-situ concrete L-shaped edge members in two directions do not intersect each other.

The beneficial effects of the present invention are: using the horizontal ribs in the prefabricated wall to respectively extend into the L-shaped edge components, saving materials and labor, reducing the difficulty of on-site construction, and meeting the requirements of large-scale and rapid construction, and compared with the existing The method of anti-seismic nodes fits well.

Description of drawings

Figure 1 is a schematic cross-sectional view of the prior art.

Fig. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a schematic diagram of reinforcement arrangement of cast-in-situ concrete L-shaped edge members in the present invention.

specific implementation plan

Fig. 1 is a schematic diagram of the connection between the prefabricated wall and the cast-in-situ concrete L-shaped edge member in the prior art. The prefabricated wall 8 is composed of prefabricated slabs 1 on both sides and truss bars 2 in the middle, and the two wall piers of the cast-in-place concrete L-shaped edge member 6 are respectively connected in-line with the corresponding prefabricated wall 8 through additional horizontal steel bars 7 . The additional horizontal steel bar 7, the hoops and tie bars of the cast-in-place concrete L-shaped edge member 6 are bound on site, and one end of the additional horizontal steel bar 7 extends into the space between the two prefabricated panels of the prefabricated wall, and the other end extends into the cast-in-place concrete L In the corresponding wall pier of type edge member 6. The wall horizontal tendons 3 in the prefabricated slab 1 in the figure do not protrude outside the prefabricated wall 8, and are cut off near the end of the prefabricated wall 8; the additional horizontal reinforcement 7 in the direction of the two wall limbs can intersect.

Fig. 2 is the node structure of the present invention, and Fig. 3 is a schematic diagram of reinforcement layout of the cast-in-situ concrete L-shaped edge member in the present invention. In Figure 2, the prefabricated slab 1 is laminated on both sides, the middle is cast-in-situ concrete, and the truss reinforcement 2 connects the prefabricated slab 1 on both sides. In the poured concrete L-shaped edge member 6 , the two wall limbs of the cast-in-situ concrete L-shaped edge member 6 are respectively arranged in a line with the prefabricated wall body 8 . The stirrup 4 of the edge member in Fig. 3 is a prior art, and can be completed according to the requirements of existing specifications and atlases. As shown in Fig. 3, the horizontal reinforcement bars 3 in the two wall directions do not intersect each other. The illustration in Fig. 3 is only a schematic representation, and it is only necessary that the horizontal reinforcement bars in the two directions do not intersect each other.

The above detailed introduction to the technology provided by the implementation of the present invention, for those of ordinary skill in the art, based on the idea of this embodiment, there will be changes in the specific implementation manner and application scope. To sum up, the contents of this specification should not be construed as limiting the present invention, and any changes made according to the design concept of the present invention are within the scope of protection of the present invention.

Claims (1)

1. A connection structure of an L-shaped shear wall edge member. The two wall limbs of the cast-in-place concrete L-shaped edge member (6) are respectively connected to the prefabricated wall (8) in a straight line, and the two sides of the prefabricated wall The prefabricated slabs (1) are stacked with the cast-in-place concrete in the middle, and the truss reinforcement (2) is sandwiched between the prefabricated slabs (1) to connect with the inner side of the prefabricated slabs (1), and the features are as follows: The wall horizontal ribs (3) in the prefabricated slab (1) protrude from one end of the prefabricated slab (1), and are embedded in the corresponding wall limbs of the cast-in-place concrete L-shaped edge member (6). The horizontal ribs (3) of the wall in one direction do not intersect each other.