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对部分包裹的钢-混组合柱进行了单调推倒荷载试验,并评估了结果,柱与基础块的连接采用传统的栓接钢底板和一种创新的插入式体系。试验显示,传统连接形式的结构响应受锚固螺栓性能的影响显著,锚固螺栓引起较大的固定端旋转并消耗一定的能量,相反地,创新型的钢-混组合基础柱插入式连接系统表现出足够的承载力、非弹性变形和能量吸收能力。而且,通过在组合柱基础的非弹性传递,插入式连接具有不破坏混凝土和构件界面的特性。新型连接形式对于框架结构满足承载设计要求,例如在地震易发区域,是可行的解决方法。
The monotonic inversed load test was carried out on partially wrapped steel-concrete composite columns and the results were evaluated. The connection of the columns to the foundation block was made using a conventional bolting steel soleplate and an innovative plug-in system. Experiments have shown that the structural response of the traditional form of connection is significantly affected by the behavior of the anchor bolt which causes a larger fixed end to rotate and consume a certain amount of energy. In contrast, the innovative steel- Adequate bearing capacity, inelastic deformation and energy absorption capacity. Moreover, the plug-in connection has the characteristic of not damaging the interface between the concrete and the component by inelastic transmission on the basis of the composite column. New forms of connection to the frame structure to meet the bearing design requirements, such as in areas prone to earthquakes is a viable solution.