叠合柱边框内藏钢桁架带洞口组合核心筒抗震性能研究  

Seismic Performance of Composite Core Walls With Steel Tube-reinforced Concrete Columns and Concealed Steel Truss

作　　者：张建伟[1,2] 耿海霞[1] 曹万林[1,2] 董宏英[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京100124

出　　处：《北京工业大学学报》2011年第11期1668-1676,共9页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50878007);北京市科技重大项目(D08050603720000);北京市教委科技计划重点项目(KZ200910005008);北京市高层次人才项目(PHR20100502)

摘　　要：提出了钢管混凝土叠合柱边框内藏钢桁架混凝土组合核心筒,为了解该新型多重组合带洞口核心筒的抗震性能,进行了1个钢管混凝土叠合柱边框带洞口混凝土组合核心筒和1个钢管混凝土叠合柱边框内藏钢桁架带洞口混凝土组合核心筒的低周反复荷载试验研究,2个试验模型按原型结构的1/6缩尺.在试验研究基础上,分析比较了2个核心筒的滞回特性、承载力、延性、刚度衰减、耗能能力和破坏形态.结果表明,与钢管混凝土叠合柱边框带洞口混凝土组合核心筒相比,钢管混凝土叠合柱边框内藏钢桁架带洞口混凝土组合核心筒的抗震性能显著提高,建立了其承载力简化力学模型,计算结果与试验结果符合较好.A new type of RC composite core walls with steel tube-reinforced concrete columns and concealed steel truss was proposed. In order to know the seismic performance of this composite core walls, two 1/6 prototypal scale perforated RC core walls specimens were designed, one of them was composite core walls with steel tube-reinforced concrete columns, the other one was composite core walls with steel tube-reinforced concrete columns and concealed steel truss, and experimental study on seismic behavior of them under the cyclic loading was carried out. Based on the experiment, the hysteretie behavior, load-carrying capacity, ductility, stiffness attenuation, energy dissipation and failure mode were contrastively discussed. The test results show that the seismic performance of RC core walls with steel tube-reinforced concrete columns is greatly improved by the concealed steel truss. Finally, the mechanical model for calculating load-carrying capacity of the new type of RC composite core walls was proposed, and the calculating results agreed well with the suitable test results.

关 键 词：钢管混凝土叠合柱 混凝土核心筒 钢桁架 抗震性能 

分 类 号：TU375[建筑科学—结构工程]