叠合柱边框-内藏网状钢桁架混凝土组合核心筒抗震性能试验

Experiment on Seismic Behavior of RC Composite Core Walls With STRC Columns and Concealed Meshed Steel Trusses

以工程中实际应用的核心筒为原型,进行了1个1/7缩尺的叠合柱边框内藏网状钢桁架组合核心筒低周反复荷载试验.基于试验,分析了该筒体的滞回特性、承载力、延性、刚度及其退化过程、破坏特征等,同时分析了该筒体的薄弱部位及其产生原因,提出了抗震构造措施.研究表明,该组合核心筒的叠合柱边框和内藏钢桁架墙体对其承载力和延性均有显著贡献.

A 1/7 scale composite core wall specimen designed from a pratical engineering was tested under low-frequency cyclic loading. The hysteretic characteristics, load-carrying capacity, ductility, stiffness and its degradation process, failure pattern of the specimen were analyzed based on the test. The related anti-seismic constructional measures were given after the weakness part of the specimen was analyzed. The results show that the load-carrying capacity and the ductility of the core walls could be improved greatly by combining the STRC columns as the borders and concealed steel trusses in the walls.