1 shear wall model 1.1 structural model the difference between the three shear wall models lies in the connection mode between members: xj1 is often cast in situ at the construction site, and the shear wall reinforcement is bound and connected; Gj1 is the most common and most widely used grouting sleeve shear wall in the assembled shear wall.

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The wall height is 2740mm, the wall length is 2400mm, and the wall thickness is 200mm.

1.

In order to simplify the model design, the plum blossom shaped grouting sleeve is simplified into a full-length reinforcement through the upper and lower parts; XG1 is a precast section steel cast shear wall with section steel placed on both sides and in the middle.

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In this paper, three kinds of finite element models are established according to specific engineering examples.

Post cast concrete is used at the connection to realize the overall rapid installation.

By comparing the advantages and disadvantages of seismic performance, the data reference is provided for the practical application and test model of precast shear wall.

3..

The displacement loading method is adopted in the left and right directions of the horizontal plane of the upper part of the loading beam [6], as shown in Fig.

The connection mode is that the upper and lower shear wall reinforcements are connected by sleeves, and then the concrete is poured into the sleeves to make them become a whole.

Welcome to the official website! http://www.tjjskj.com.cn Chen Shengbin (College of civil engineering and architecture, Anhui University of science and technology, Huainan 232001, Anhui Province) Abstract: in order to analyze the seismic performance of precast shear walls with different connection forms, ABAQUS finite element analysis software is used to establish three kinds of finite element models of cast-in-situ concrete, plum blossom shaped grouting sleeve assembly, and H-shaped steel assembly at the edge and middle, The hysteretic curve, skeleton curve and stiffness reduction (stiffness degradation curve) of three kinds of shear walls under low cycle reciprocating loading are calculated and analyzed.

The model wall is a rectangular section with the same overall dimensions.

[1] studied the seismic performance of the assembled reinforced concrete shear wall connected by the tooth key by changing the height of the tooth key.

2xg1 profile steel position 1.2 material parameters C40 standard concrete is selected as wall material, with density of 2500kg / m3 and elastic modulus of 3.25 × 104n / mm2, Poisson’s ratio 0.3 [5].

Divide the wall into 100mm × 100mm, the division size of loading beam and ground beam is 200mm × 200mm。 The test is a quasi-static loading test.

The axial compression ratio in the shear wall model is set to 0.3.

The three shear walls only study a single wall structure, weakening the connection performance between the whole.

The results show that the ultimate bearing capacity of the cast-in-situ shear wall is basically the same as that of the grouted sleeve assembled shear wall, but the hysteretic curve of the grouted sleeve assembled shear wall is fuller, the energy dissipation capacity is stronger, and the earthquake resistance is better; The ultimate bearing capacity of section steel assembled shear wall is greater than the other two, with the largest rigidity, the fullest hysteretic curve and the best seismic performance.

Wang Shuwei et al.

The axial compression ratio is between 0.3 and 0.5.

The seismic performance of precast shear walls has been paid more attention.

1 shear wall model Fig.

See Fig.

The reinforcement in the wall is HRB400 grade, and the steel is Q235 H-shaped steel, with a density of 7800kg / m3 and an elastic modulus of 2 × 105N / mm2, Poisson’s ratio is 0.3, and the yield strength and tensile strength are standard values.

[2] designed a concrete shear wall with ring reinforcement buckled and anchored.

[4] found that the overall performance of the two dry-type connection (welding and straight thread mechanical sleeve connection) shear walls and the cast-in-situ concrete shear walls are relatively close, and the rigidity of the flash butt weld and the cast-in-situ integral reinforcement are roughly the same, and the mechanical sleeve has a strengthening effect on the connection part.

The precast shear wall reinforcement of this connection form can effectively transfer stress, and the energy consumption capacity shows an increasing trend; Wang Weiyong et al.

A) elevation b) section unit: mm Fig.

Low cycle reciprocating loading is carried out and a vertical force of 550kn is applied.

[3] analyzed a new type of steel truss concrete composite shear wall with lateral force resistance structure suitable for precast buildings through ABAQUS finite element analysis software.

The collection and editing system of Tianjin construction technology is newly launched.

C3d8r solid element is used for concrete, and t3d2 truss element is used for reinforcement and section steel.

1.3 element division and loading method: independent modeling of precast concrete, reinforcement and section steel is carried out in ABAQUS finite element analysis software.

The shear bearing capacity of steel truss concrete shear wall is large, and the effect of increasing the steel content ratio of the steel column and the steel content ratio of the large steel web member is obvious; Li Yan et al.

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It is connected with bolts through the extension of the section steel.

Many areas have abandoned the traditional cast-in-situ building mode and started to use precast buildings.

It was found that the bearing capacity of the assembled reinforced concrete shear wall connected by the tooth key was slightly improved in the later period when the height of the tooth key was increased; Xu Guanchao et al.

Keywords: assembly type; Shear wall; Seismic performance at present, all industries in China are upgrading their technology.