摘要
地震时砌体结构窗间墙易发生破坏,为了提高其抗震性能,对高宽比为1的2组共4片墙体,其中:2片为双层打包带加固墙体,2片为原墙,进行了拟静力试验,研究墙体的破坏形态、水平承载力、滞回曲线和耗能等抗震性能。试验发现原墙发生剪切破坏,加固后墙体发生摇摆破坏,加固改变了墙体破坏模式,加固后墙体滞回曲线饱满但有捏笼,破坏荷载、延性和耗能能力都有提高,破坏时未发生剥离,表明双层打包带加固法有效地提高了窗间墙体抗震性能,对承受较大竖向应力墙体效果更好,建议加固时要加强加固层与窗下和窗上墙体的连接。
During an earthquake,the walls between windows of masonry structure are prone to failure.In order to improve the seismic performance,pseudo-static tests were performed on two groups of four walls with aspect ratio of 1,of which two were strengthened by two double-layer packing belt and two were unreinforced,seismic performances such as the failure mode,horizontal bearing capacity,hysteretic performance and energy dissipation were studied.The test results show that the two original walls are in shear failure,and the reinforced walls are in bending failure.After reinforcement,the hysteretic curve of walls was reversed S-shape,the ultimate load of the wall increased,the ductility and energy dissipation capacity of the specimens improved.The double-layer packing belt reinforcement method can greatly reduce the damage of the wall and improve its seismic performance,especially in cases with a larger vertical stress.It is suggested to strengthen the connection between the reinforced layer and other walls to improve the overall performance.
作者
王赟
WANG Yun(School of Civil Engineering&Architecture,Shaanxi University of Technology,Hanzhong 723000,China)
出处
《世界地震工程》
CSCD
北大核心
2020年第1期183-188,共6页
World Earthquake Engineering
基金
陕西省科学技术厅社会发展科技攻关项目(2016SF-420)
关键词
窗间墙
双层打包带
拟静力试验
抗震性能
walls between windows
double-layer packing belt
pseudo-static test
seismic performance
