TU398
国家自然科学基金资助项目（51408128，51508104）；福建省高校新世纪优秀人才支持计划资助项目（GY-Z15108）。
应用OpenSEES通用程序建立变截面平缀管式钢管混凝土格构柱有限元模型，试件的分析结果与拟静力试验结果吻合良好。以柱肢坡度为计算参数，对四肢变截面平缀管式钢管混凝土格构柱开展抗震性能研究，探讨了构件的耗能能力、骨架曲线、结构延性、刚度退化等方面的受力性能和规律，并与等截面钢管混凝土格构柱进行对比研究。在此基础上进一步分析了轴压比、试件高度（长细比）、平缀管竖向间距、柱肢含钢率、支主管管径比、钢材屈服强度、混凝土强度等参数对变截面平缀管式钢管混凝土格构柱抗震性能的影响，为钢管混凝土计算理论的进一步完善和变截面钢管混凝土格构式桥墩的工程应用提供参考。
A finite element analysis model of variable cross-sectional concrete-filled steel tubular(CFST)laced column with flat lacing tubes is built with universal program of OpenSEES, and the calculating results of specimen obtained by OpenSEES agree well with the quasi-static test results.The seismic performance of four-element variable cross-sectional CFST laced columns with flat lacing tubes is researched with calculation parameter of column slope, including the rules on energy dissipation capacity, skeleton curve, structure ductility, and stiffness degradation of elements, and these calculation results are compared with the research results of uniform cross-sectional CFST laced columns. And the influence of axial compression ratio, column height (slenderness ratio), vertical spacing of flat lacing tubes, steel ratio of longitudinal element, diameter ratio of lacing tubes to longitudinal tubes, yield strength of steel, concrete strength and other structural parameters on seismic performance of variable cross-sectional CFST laced columns with flat lacing tubes are investigated. It's hoped that the results can provide reference for the improvement of CFST calcalation theory and engineering application of variable cross-sectional CFST laced column piers.
欧智菁,陈盛富,袁辉辉,吴庆雄.变截面平缀管式钢管混凝土格构柱的抗震性能[J].重庆大学学报,2018,41(1):17-29.
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