低周往复荷载作用下生态复合墙体抗震性能研究  

Experimental research on seismic behavior of ecological composite wall under reversed lowly cyclic loads

作　　者：黄炜[1] 马国臣[1] 张程华[1] 张奇[1,2] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]中国新时代国际工程公司,陕西西安710054

出　　处：《地震工程与工程振动》2013年第3期155-161,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50908188;51178385);国家"十二五"科技支撑项目(2012BAJ16B02)

摘　　要：通过对2榀1/2比例生态复合墙体(施工工艺:装配式、现砌式)模型在水平低周反复荷载作用下的抗震性能试验,研究复合墙体在低周反复荷载作用下的受力特点和破坏机制,对比分析其承载力、滞回特性、延性、刚度退化、耗能等抗震性能。试验结果表明:不同施工工艺下生态复合墙体破坏模式均为"砌块—(框格)—边框",实现结构具有多道抗震防线的设计概念;2榀墙体从屈服到破坏,等效黏滞阻尼系数均有较明显的增大,都具有较强的耗能能力。抗倒塌能力较强,可根据不同地区差异选取适当的工艺来满足实际应用的需求。This paper studies the seismic behavior of two ecological composite walls,the scales of which are 1∶ 2.A comparative study is conducted under lowly reversed cyclic lateral loading.Emphasis is put on the evaluation of the failure mechanism,bearing capacity,hysteretic loops,ductility,deterioration of strength and stiffness of ecological composite walls under seismic loads.The experiment results show that the failure modes of ecological composite walls with different construction technology are blocks-ribbed grids-end frames.This indicates that the ecological composite wall has several seismic defending lines.The equivalent viscous damping coefficients of four walls all have been obviously increased from yielding stage to failure stage,and these have great energy dissipation capacity and strong collapse resistant capacity.Based on regional difference,the appropriate technique can be selected for practical engineering.

关 键 词：低周往复荷载 装配式生态复合墙体 现砌式生态复合墙体 抗震性能 

分 类 号：TU375[建筑科学—结构工程]