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钢管混凝土格构柱常被用于重载大跨厂房柱、设备构架柱等,本文对超长钢管混凝土四肢格构柱进行偏心受压试验研究,得到了四肢钢管混凝土格构柱的偏压极限承载力和构件的受力全过程曲线,验证了超长钢管混凝土格构柱的优良性能,对钢管混凝土长柱的最终失效模式做出了分析和解释,对试验过程中柱肢钢管的纵向应变、环向应变和部分缀件的纵向应变进行量测,为分析加载过程中构件各部位的受力情况提供数据。同时结合试验现象和测量的相关数据,为钢管混凝土格构长柱偏压性能的理论分析提供试验基础。
The CFST latticed columns are often used for overloading large-span plant columns, equipment frame columns, etc. In this paper, the eccentric compression tests on the extremity CFST trellis columns are carried out. The biasing limit of the CFST columns Bearing capacity and component of the whole force curve of the test to verify the excellent performance of super-long concrete filled steel tubular columns, the ultimate failure mode of concrete filled steel tubular made an analysis and explanation of the column during the test longitudinal deformation of the steel pipe , Hoop strain and part of the longitudinal component of the gage were measured to analyze the various parts of the load during loading force to provide data. At the same time, the experimental data and the relevant data are combined to provide the experimental basis for the theoretical analysis of the long column bias of CFST.