【作者】 赵艳； 王凤来；

【Author】 ZHAO Yan;WANG Feng-lai;School of Civil Engineering,Harbin Institute of Technology;College of Architecture and Civil Engineering,Jiamusi University;

【机构】 哈尔滨工业大学土木工程学院； 佳木斯大学建筑工程学院；

【摘要】 基于不同配筋率的10片足尺配筋砌体短肢砌体剪力墙试件在低周往复荷载作用下的试验结果,研究此种墙体从开始加荷到破坏整个过程中刚度衰减规律。通过对试验所得各试件滞回曲线的分析,得出刚度衰减系数随试件顶点位移变化规律,通过数据拟合,得出不同破坏模式下此种墙体的刚度衰减方程。研究结果表明:发生弯曲型破坏模式墙体的刚度衰减速度较发生剪切型破坏模式墙体要快,竖向压应力对墙体刚度衰减影响较小,可以忽略。更多还原

【Abstract】 According to tests of 10 full-scale fully grouted reinforced block short-leg masonry shear walls subjected to low cyclic reversed lateral loads,the stiffness degradation law is investigated during load application to damage of walls.According to hysteretic curve obtained from tests,stiffness attenuation coefficient with top displacement of specimens was proposed.The stiffness degradation equation on the different failure mechanism of these walls was integrated.It has been shown that stiffness attenuation of flexural-dominated specimen is quicker than one of shear-dominated specimen.Furthermore,the applied axial stress has a little influence on stiffness attenuation of specimen,therefore,it can be neglected.更多还原