Experimental study on strengthening method of low strength brick masonry using steel plate and polymer mortar

被引：0
|
作者：
Chen Z. [1 ]
Sun K. [1 ]
Luan W. [2 ]
Li S. [3 ]
Tian Y. [4 ]
Zhu X. [1 ]
机构：
[1] Department of Civil Engineering, Harbin Institute of Technology at Weihai, Weihai
[2] Urumqi Municipal Commission of Housing and Urban-Rural Development in Xinjiang Uygur Autonomous Region, Urumqi
[3] Urumqi Architectural Design Institute Institute Co., Ltd, Urumqi
[4] Department of Civil Engineering, Harbin Institute of Technology, Harbin
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2018年 / 39卷 / 12期
关键词：
Brick masonry; Low strength; Quasi-static test; Reinforced; Seismic behavior;
D O I：
10.14006/j.jzjgxb.2018.12.018
中图分类号：
学科分类号：
摘要：
A strengthening method, which uses the orthogonal steel plate to paste on the masonry surface firstly and then polymer mortar is used to coat the surface, is presented for existing low strength brick masonry structures in the Midwest of China. The presented method involves the use of orthotropic steel plate to improve the integrity and ductility of the brick masonry structure; the polymer mortar is used to reduce the chance of potential debonding of the steel plate and thus further improve the integrity of the brick masonry wall. To demonstrate the feasibility of the presented method, eight full-scale walls of different mortar strength grades were tested under quasi-static loading to obtain the damage process and mode, the hysteretic curves and the performance index of the walls. The test results show that the performance indexes of the strengthened walls are significantly improved. The bearing capacity of the strengthened wall is 90% higher than that of the unstrengthened wall. The ductility factor of the strengthened wall is 100% higher than that of the unstrengthened wall. The skeleton curves of the strengthened walls show a particular plastic stage after cracking of the walls while the unstrengthened walls showed brittle damage. The presented strengthening method can effectively improve the seismic performance and load capacity of the brick masonry wall. The ratios of various mechanical properties of different specimens before and after strengthening show that the strengthening effect of the presented method is basically consistent for different masonry mortar walls. © 2018, Editorial Office of Journal of Building Structures. All right reserved.
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页码：153 / 158and167
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