高层建筑消能减震钢-混凝土组合剪力墙性能研究  

Study on energy-dissipating composite steel-concrete shear walls for tall buildings

作　　者：董宏英[1] 张慧[1] 曹万林[1] 韩丽[1] 于传鹏[1] 乔崎云[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124

出　　处：《地震工程与工程振动》2013年第6期74-80,共7页Earthquake Engineering and Engineering Dynamics

基　　金：北京市自然科学基金项目(8122004);国家自然科学基金项目(51178010);北京市教委项目(PXM2011-014204-09-000090;PXM2011-014204-09-000127)

摘　　要：提出了两种消能减震钢-混凝土组合剪力墙,一种为工形截面钢管混凝土边框双钢板组合剪力墙,一种为带软钢板耗能键的钢管混凝土边框组合剪力墙。通过合理构造设计,将钢管混凝土、钢板、混凝土墙体组合,以实现强震作用下各组合部件屈服耗能、组合部件间界面区域耗能减震作用。进行了低周反复荷载下抗震性能试验研究,分析了破坏特征、承载力、延性、滞回特性、耗能。结果表明:工形截面钢管混凝土边框双钢板组合剪力墙,充分发挥了腹板双钢板形成的交叉拉力带消能减震作用,滞回曲线饱满,耗能能力强;合理匹配翼缘与腹板强弱关系,是实现双钢板剪力墙延性耗能屈服机制的关键。带软钢板耗能键的钢管混凝土边框组合剪力墙,充分发挥了钢管混凝土、软钢板耗能键、混凝土墙体及其界面相互咬合与摩擦双重消能减震作用,实现了延性屈服机制。Two kinds of energy-dissipating composite steel-concrete shear walls are put forward. One is X-section composite shear wall with CFST columns and double steel plates, and the other is composite shear wall with CFST columns and soft steel plate energy-consuming connectors. To make sure that double energy-dissipating functions of each component or touching sections in the walls can work out under strong earthquakes, CFST columns, steel plates, and concrete walls are combined by rational construction details. Seismic experimental study is carried out under low cyclic loading. The failure characteristic, load-bearing capacity, ductility, hysteretic properties, and en- ergy dissipation are analyzed. Results show that for I-section composite shear walls with CFST columns and double steel plates, the energy-dissipating function of inclined tension strips formed on webs is fully used. It has stable hysteretic curves and remarkable energy dissipation capacity. Choosing rational matching configurations between flange and web is the key measure to make sure that the ductile, energy-dissipating yielding mechanism can be reached. For the composite shear walls with CFST columns and soft steel plate energy-consuming connectors, the energy-dissipating fvnction is fully used by deformations of CFST columns, soft steel plate energy-consuming con- r^ectors, concrete walls and the interactions among them, and the ductile yielding mechanism is achieved.

关 键 词：高层建筑 钢-混凝土组合剪力墙 消能减震 屈服机制 试验研究 

分 类 号：TU398.2[建筑科学—结构工程] P315.92[天文地球—地震学]