钢管初应力对内配型钢钢管混凝土偏压柱受力性能的影响  

Effect of initial stresses on steel tube on the behavior of concrete filled tubular columns with inner profiled steel subjected to eccentric loading

作　　者：史艳莉[1,2] 陈彦玉 王文达[2] Shi Yan1,2, Chen Yanyu2, Wang Wenda2(1. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China ; 2. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Chin)

机构地区：[1]兰州大学土木工程与力学学院,甘肃兰州730000 [2]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《建筑科学》2018年第3期55-62,共8页Building Science

基　　金：国家自然科学基金项目(51768038);甘肃省建设科技攻关项目(JK2015-9);兰州理工大学"红柳杰出人才培养计划"(J201305)

摘　　要：本文在以往内配型钢钢管混凝土偏压柱力学性能试验研究、钢管初应力对钢管混凝土偏压柱力学性能影响的试验研究基础上,利用ABAQUS有限元软件,首先建立了内配型钢钢管混凝土偏压柱、考虑钢管初应力的钢管混凝土柱有限元计算模型,数值模拟结果与试验结果吻合良好。进而建立考虑钢管初应力的内配十字形型钢圆钢管混凝土偏压柱受力性能影响模型,详细分析了钢管初应力对其力学性能的影响规律。最后,对影响承载力影响系数kp的参数进行了系统分析。In this paper,a finite element model（ FEM） is developed using ABAQUS to simulate the behavior of concrete-filled steel tubular（ CFST） columns with inner profiled steel subjected to eccentric loading,as well as the CFST columns with initial stresses in steel tube. The FEM is based on the experimental research on behavior of the above two types of composite column. The numerical results are well match with the experimental results. The FEM is used to analyze the performance of CFST columns with inner steel cross section under eccentric loading and initial stresses in steel tube,and the mechanic behavior rules on pro-load in steel tube of the columns are achieved in detail. The strength index kpis analyzed on relevant parameters systematically using the model.

关 键 词：数值模拟 钢管初应力 柱 偏压 内配型钢钢管混凝土 

分 类 号：TU398[建筑科学—结构工程]