既有框架结构增设装配式翼墙及钢桁架的加固试验分析  

Reinforcement Test Analysis of Existing Frame Structure Fabricated Adding Wing Walls and Steel Truss

作　　者：张绍武[1] 许哲[1] 陈英川 李妍[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《工程抗震与加固改造》2014年第2期42-47,共6页Earthquake Resistant Engineering and Retrofitting

基　　金："十二五"国家科技支撑计划(2012BAJ11B02)

摘　　要：为验证一种新的框架结构整体抗震加固方法的可行性,通过对一榀框架和采用装配式翼墙及钢桁架加固的已损伤框架在水平低周反复荷载作用下的拟静力试验的对比,分析抗侧力体系的破坏特征、力学性能及变形能力,并判断两个框架的抗震能力,与理论值进行了比较。加固后试件滞回曲线形状饱满,其骨架曲线的平行段较长,表现出较强的耗能能力,充分体现了方钢管混凝土柱作为加固单元的优越性。加固后框架的延性系数是原来的1.3倍,提高了框架结构的变形能力,比原框架承载力约提高了37%。对破坏后的框架增设方钢管混凝土柱及钢桁架作为加固单元,增加其变形能力,有较强的耗能能力,提高了原框架结构的承载力。In order to verify the feasibility of an anti-seismic reinforcement method to the building frame construction,the pseudo-static experiment of a framework and another concrete framework reinforced with the prefabricated wing walls and steel trusses are tested and compared under horizontal cyclic loading,the failure characteristics,mechanical properties and deformation capacity of lateral force resisting system are analyzed,and the seismic capacity of the two frameworks are compared with the theoretical value.The results show that,the CFRT reinforced concrete column has strong performance of the energy dissipation capacity as the advantages reinforcement unit.The ductility factor of the framework is 1.3 times the original,it increased the seismic capacity of the frame construction,the capacity of the original framework increases by 37％.After the demaged framework reinforced with the square steel tubular column and steel trusses as a reinforcement unit,the structure has a strong energy dissipation capacity and seismic bearing capacity.

关 键 词：抗震加固 装配式翼墙 拟静力试验 延性 

分 类 号：TU399[建筑科学—结构工程] TU352.11