两层钢管混凝土柱与组合梁单边螺栓端板连接框架拟动力试验研究

发布时间：2018-04-11 10:01

本文选题：半刚性连接 + 钢管混凝土组合框架　；参考：《土木工程学报》2016年10期

【摘要】：为揭示半刚性钢管混凝土组合框架在地震作用下的动力特性和破坏形式,对2榀两层单跨钢管混凝土柱与组合梁单边螺栓端板连接组合框架进行拟动力试验研究。该试件的梁柱连接节点形式为平齐端板或外伸端板连接,组合楼板采用钢筋桁架楼承板,试验影响参数为柱截面类型和端板类型。研究了El-Centro地震波作用下结构的加速度反应和位移响应,分析了滞回性能、刚度、延性和耗能能力等,评价了梁柱半刚性连接和楼板组合效应对组合框架结构整体性能的影响。试验表明:半刚性钢管混凝土组合框架具有良好的抗震性能和耗能特性。在柱截面宽度和含钢率相同条件下,采用单边高强螺栓端板连接方式,圆钢管混凝土组合框架的最大位移响应和累积耗能比方钢管混凝土组合框架大;方钢管混凝土组合框架的水平承载力和初始刚度优于圆钢管混凝土组合框架。研究成果将为我国装配式组合结构设计理论与应用提供科学依据。
[Abstract]:In order to reveal the dynamic characteristics and failure form of semi-rigid concrete-filled steel tubular composite frame under earthquake action, the pseudo-dynamic test of two composite frames with two-story single-span concrete filled steel tube column and single side bolt end plate of composite beam was carried out.The joint form of Liang Zhu connection of the specimen is horizontal and horizontal end plate or extended end plate connection, the composite floor slab is reinforced truss floor board, and the test parameters are column section type and end plate type.The acceleration response and displacement response of the structure under the action of El-Centro seismic wave are studied. The hysteretic performance, stiffness, ductility and energy dissipation capacity are analyzed, and the effects of Liang Zhu semi-rigid connection and floor composite effect on the overall performance of the composite frame structure are evaluated.The test results show that the semi-rigid CFST composite frame has good seismic performance and energy dissipation characteristics.Under the same column section width and steel content ratio, the maximum displacement response and cumulative energy consumption of CFST composite frame are larger than that of CFST composite frame.The horizontal bearing capacity and initial stiffness of concrete-filled square steel tube composite frame are better than that of circular concrete filled steel tube composite frame.The research results will provide scientific basis for the design theory and application of assembled composite structure in China.
【作者单位】：合肥工业大学;安徽土木工程结构与材料省级重点实验室;
【基金】：国家自然科学基金(51478158、51178156) 教育部新世纪优秀人才支持计划(NCET-12-0838)
【分类号】：TU398.9

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