摘要
本文对带缝钢板阻尼器消能连梁进行了子结构试验研究,带缝钢板阻尼器通过预埋钢板与混凝土部分螺栓连接,与相同配筋的混凝土连梁相比,屈服强度为50%,刚度为80%,通过使阻尼器先于混凝土进入屈服,达到集中变形、耗散能量、控制损伤及震后快速恢复的目的。本文设计进行了1/3缩尺的连梁拟静力试验,相同加载工况下无控和有控试件的试验现象及力学性能对比表明,带缝钢板阻尼器消能连梁的刚度是混凝土连梁的80%,强度基本相同,混凝土部分破坏大幅削减,耗能明显提升。
A substructure assembly of an energy dissipative coupling beam is tested,in which a steel damper with slits is connected to the steel plates embedded into the concrete through bolts. The strength of the damper is designed as the 50% of the concrete coupling beam with the same dimension and rebars,while the stiffness is 80%.Therefore,the damper is going to yield before the concrete,thus achieving goals of concentrating deformation,consuming energy,controlling damage,and rendering the structure quick reparability. Two 1 /3-scaled substructure assembly specimens are constructed and tested quasi-statically. One is a concrete coupling beam,while the other with the same dimension but installed with a damper. It demonstrates that the stiffness of energy-dissipative coupling beam is 80% of the concrete one. Both have similar strength. Compared with the concrete one,the damage of the concrete rendering of the energy-dissipative coupling beam is significantly reduced,while energy dissipation capacity increases.
出处
《地震工程与工程振动》
CSCD
北大核心
2014年第S1期743-749,共7页
Earthquake Engineering and Engineering Dynamics
基金
中央级公益性研究所基本科研业务费专项(2013A01)
国家国际科技合作专项项目(2014DFA70950)
关键词
消能连梁
带缝钢板阻尼器
高层建筑
子结构试验
损伤控制
energy-dissipative coupling beam
steel damper with slits
high-rise buildings
substructure test
damage control
