钢管混凝土边框内藏带斜肋钢板中高剪力墙抗震性能试验  

Experiments on the seismic behavior of mid-rise shear walls with CFST boundary columns and concealed steel plates with diametrically opposed cross-braces

作　　者：董宏英[1] 张文江[1,2] 曹万林[1] 于传鹏[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]河北大学建筑工程学院,河北保定071002

出　　处：《地震工程与工程振动》2013年第3期148-154,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50978005)

摘　　要：提出了钢管混凝土边框内藏斜撑肋钢板组合中高剪力墙。为研究这种组合剪力墙的抗震性能,进行了5个不同构造的中高剪力墙模型低周反复荷载试验。分析了试件的损伤特征、承载力、耗能、滞回特性,提出了正截面抗弯承载力计算模型,计算结果与试验符合较好。研究表明:钢管混凝土边框内藏钢板组合剪力墙具有较高的承载力和良好的耗能性能;钢管混凝土边框内藏带斜撑肋钢板中高剪力墙,适于在墙体厚度小于钢管尺寸或内藏钢板厚度较薄的"强边框、弱墙体"情况下应用,可明显减轻钢管混凝土边框底部的损伤,延缓墙体性能退化,提高组合剪力墙的抗震能力。A new design of mid-rise shear wall with CFST columns and concealed steel plate with diametrically opposed cross-braces is hereby set forward.In order to quantify its seismic behavior,5 mid-rise shear wall specimens are tested under low frequency cyclic loading.The ensuing failure characteristics,load-bearing and energy dissipation capacities,hysteretic behavior of these specimens are discussed herein.The calculated model of bend resistant load-bearing capacity is established and the results agree well with the experimental ones.The experiments show that the composite shear walls with CFST columns and embedded steel plate have a higher load-bearing and better energy dissipation capacities compared to conventional mid-rise shear walls.The proposed mid-rise shear wall with CFST boundary columns and concealed steel plate with diametrically opposed cross-braces is suitable for shear walls where thickness is smaller than the cross section of the CFST columns or shear walls with low-thickness embedded steel plates.The inclined cross-braces reduce the damage typically seen at the bottom of CFST columns,delay the stiffness degradation,and improve the integrative seismic behavior of the entire wall.

关 键 词：钢管混凝土 钢板 斜撑肋 组合剪力墙 抗震试验 

分 类 号：P315.92[天文地球—地震学]