内藏桁架混凝土组合高剪力墙抗震性能  

Seismic performance of high-rise shear wall with concealed truss

作　　者：曹万林[1] 张建伟[1] 董宏英[1] 郑同亮[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124

出　　处：《哈尔滨工业大学学报》2009年第4期153-158,共6页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50678010);北京市科技计划重大资助项目(D0905060370000);高校博士点基金资助项目(200070005005)

摘　　要：为改善混凝土高剪力墙的抗震性能,提出了内藏桁架混凝土组合高剪力墙,其内藏桁架包括钢桁架、钢筋桁架及型钢-钢筋组合桁架.该新型剪力墙为双重组合剪力墙,即将桁架与剪力墙两种受力体系组合、型钢与混凝土两种材料组合联合应用.进行了6个1/3缩尺的高剪力墙抗震性能试验研究;对比分析了普通混凝土高剪力墙、内藏钢框架混凝土高剪力墙和内藏桁架混凝土组合高剪力墙的承载力、延性、刚度及其衰减、滞回特性、耗能能力及破坏特征;建立了内藏桁架混凝土高剪力墙的刚度和承载力计算模型;提出了该新型剪力墙的抗震设计建议.计算结果与实测值符合较好.试验表明,内藏钢框架及内藏桁架混凝土高剪力墙的抗震性能比普通混凝土高剪力墙的抗震性能明显提高.In order to improve the seismic performance of RC high-rise shear wall, the RC high-rise shear wall with concealed truss was brought forward. The concealed truss included steel truss, steel bar truss and the composition truss of shaped steel and steel bar. This new shear wall was a double composite shear wall, viz. , the combination of truss and shear wall and the combination of steel and concrete. The experimental study was carried out on the seismic performance of six 1/3 scale high-rise shear walls, including one with steel frame, four with different style concealed trusses as well as a normal one. The load-carrying capacity, ductility, stiffness and its attenuation, hysteretic property, energy dissipation and failure phenomena of each specimen were contrastively analyzed. The formulas of calculating load-carrying capacity and stiffness were established. Some suggestions for seismic design of RC high-rise shear wall with concealed truss were put forward. The results obtained from formulas and experiments were in good agreement. Experimental results showed that, compared with normal RC high-rise shear wall, the seismic performance of the RC high-rise shear wall with steel frame and concealed truss was obviously improved.

关 键 词：钢筋混凝土 型钢 内藏桁架 高剪力墙 抗震性能 

分 类 号：TU375[建筑科学—结构工程]