Seismic performance and reinforcement strategy of frame infilled with ESPS block masonry wall: experimental, theoretical and numerical investigation

Biao Liu; Guo-Liang Bai; Guang-Ming Fu

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Seismic performance and reinforcement strategy of frame infilled with ESPS block masonry wall: experimental, theoretical and numerical investigation

机译：Seismic performance and reinforcement strategy of frame infilled with ESPS block masonry wall: experimental, theoretical and numerical investigation

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The new energy-saving perforated shale (ESPS) block is suitable for buildings in cold regions. In order to explore the seismic performance and reinforcement strategy of the ESPS block masonry wall, pseudo-static tests, finite element (FE) analysis, and theoretical analysis were carried out. Firstly, pseudo-static tests were carried out to study the failure pattern, hysteretic performance, skeleton curve, and ductility. Secondly, the detailed 3D FE model was proposed, which considered the contact behavior between blocks, between blocks and concrete, and between rebar and concrete. The advantage of the model is that it does not depend on any subroutines, which makes it easier for engineers and researchers to use this model. The comparison with the test results proved that the model can accurately simulate the opening and closing of cracks, hysteresis performance, and skeleton curve of the wall under cyclic load. The parametric modeling software was developed to solve complex modeling problems. Then, the detailed parametric study was carried out, and the influence of 8 parameters on the seismic performance of the wall was analyzed. Finally, five reinforcement schemes were designed, and the reinforcement effect was studied through the validated model. The interesting finding is that the seismic capacity after reinforcement along the diagonal of the wall increased to twice that of the unreinforced wall, it is basically meaningless to continue to reinforce the middle part on the basis of strengthening the wall along the diagonal, and the damage of the wall under cyclic load changed due to reinforcement.

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来源
《Bulletin of earthquake engineering》 |2022年第11期|6007-6045|共39页
作者
Biao Liu; Guo-Liang Bai; Guang-Ming Fu;
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作者单位

Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China;

School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;

Xi'an Research and Design Institute of Wall and Roof Materials Co,.Ltd., Xi'an 710061, China;

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原文格式 PDF
正文语种英语
中图分类地震学;
关键词
ESPS block masonry wall; Seismic performance; Pseudo-static test; Parametric study; Reinforcement schemes;

Seismic performance and reinforcement strategy of frame infilled with ESPS block masonry wall: experimental, theoretical and numerical investigation

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