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利用有限元分析软件ABAQUS对带端板圆锥形中空夹层钢管混凝土短柱局压力学性能进行有限元分析和相应的试验研究,所得的荷载-位移全过程曲线及短柱破坏形态吻合较好。在此基础上对其受力全过程中上端板、内外钢管及混凝土应力分布情况进行了分析,同时给出了内外钢管与夹层混凝土之间的相互作用,并对锥度、材料强度、空心率、局压面积比、端板刚度等参数对局压时短柱极限承载力及荷载-位移曲线的影响进行了比较。
Finite element analysis and corresponding experimental study on the partial pressure mechanical behaviors of the short column with the end-plate conical hollow-core-infilled concrete filled by finite element analysis software ABAQUS were carried out. The obtained whole curve of load-displacement and the failure mode of the short column coincide well. On this basis, the stress distribution of the upper end plate, the inner and outer steel pipes and the concrete in the whole process of the forced load are analyzed, and the interaction between the inner and outer steel pipes and the sandwich concrete is also given. The taper, material strength, hollowness, The effects of the parameters such as the area ratio of pressure and the rigidity of the end plate on the ultimate bearing capacity and the load-displacement curve of the short column under the action of pressure were compared.