Seismic Performance of a New Precast Concrete Shear Wall with Bolt Connection

被引：0

作者：

Li W. ^{[1
,2
,3
]}

Xiang R. ^{[1
]}

Du Y. ^{[1
,2
,3
]}

机构：

[1] Inst. of Earthquake Protection and Disaster Mitigation, Lanzhou Univ. of Technol., Lanzhou

[2] Key Lab. of Disaster Prevention and Mitigation in Civil Eng. of Gansu Province, Lanzhou Univ. of Technol., Lanzhou

[3] Western Eng. Research Center of Disaster Mitigation in Civil Eng. of Ministry of Education, Lanzhou Univ. of Technol., Lanzhou

来源：

Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences | 2019年 / 51卷 / 05期

关键词：

Axial compression ratio; Bearing capacity; Bolt connection; Height-width ratio; Horizontal joint; Precast concrete shear walls; Seismic performance;

D O I：

10.15961/j.jsuese.201801163

中图分类号：

学科分类号：

摘要：

In prefabricated shear wall structures, the reliable connection between prefabricated components is the concerning focus. In order to avoid the tedious post-pouring process of horizontal joints during construction, a new type of connection method of precast concrete shear wall horizontal joint is proposed and its seismic performance was studied. The seismic performance of the cast-in-place monolithic shear wall was analyzed by establishing a refined finite element model, and the reliability was verified by comparing with the test results. Hereby the finite element model of the precast specimens with new connection method and the same size cast-in-place integral shear wall was established, and the seismic performance of the precast specimens was analyzed by considering the axial compression ratio and aspect ratio, respectively. The results show that the ultimate bearing capacity of precast concrete shear wall YZ-3 under forward loading is 3.3% higher than that of XJ-3 and the reverse loading is 5.4%, The ultimate load of model YZ-1 is 4.8% higher than that of the model XJ-1. Obviously, the bearing capacity of precast concrete shear wall is higher than that of cast-in-place shear wall under the same condition, and the bearing capacity of the prefabricated shear wall increases more obviously with the increase of the axial compression ratios; with the decrease of aspect ratio, compared with model YZ-2, the ultimate bearing capacity of the models YZ-4 and YZ-5 is increased by 44.2% and 79%, respectively, and the initial stiffness is increased by 18.0% and 47.1%, respectively. Therefore, the bearing capacity of precast concrete shear wall becomes stronger with the decrease of aspect ratio, while the initial stiffness becomes larger gradually, and the ductility of the precast model is better than that of monolithic shear wall, and the seismic performance is basically similar. The new connection method can transfer the stress of steel bar effectively and can be used as a reliable connection way. © 2019, Editorial Department of Advanced Engineering Sciences. All right reserved.

引用

页码：78 / 86

页数：8

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