新型复合柱抗冲击试验研究及有限元分析  

EXPERIMENTAL STUDY AND FINITE ELEMENT ANALYSIS OF IMPACT RESISTANCE OF NOVEL COMPOSITE COLUMNS

作　　者：朱翔[1] 陆新征[2] 杜永峰[1] 叶列平[2] 

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050 [2]清华大学土木工程系,北京100084

出　　处：《工程力学》2016年第8期158-166,220,共10页Engineering Mechanics

基　　金：铁道部科技研究开发计划重点课题项目(2012G003-J);清华大学自主研究项目(2012TH Z06);国家自然科学基金项目(51222804);大型先进压水堆核电站国家科技重大专项CAP1400安全评审技术及独立验证试验项目(2011ZX06002-10)

摘　　要：为改善结构柱抗冲击性能,提出最优截面形式,对不同截面的新型复合柱进行了抗冲击试验研究,并基于3种通用动力非线性有限元软件MSC.Marc、ABAQUS和ANSYS/LS-DYNA对撞击试验进行了数值模拟。试验结果表明新型复合柱的整体抗冲击性能较好;在相同外径和用钢量下,实心夹层钢管混凝土抗冲击性能最佳,空心夹层钢管混凝土抗冲击性能次之,内插双H型钢钢管混凝土稍差。ABAQUS建立的有限元模型和试验结果吻合最好,MSC.Marc次之,ANSYS/LS-DYNA稍差。研究结果可为新建大型铁路站房柱抗冲击选择最优截面提供依据,并为选取适合的有限元软件进行抗冲击分析提供参考。In order to improve the impact resistance of structural columns and propose optimal section form, impact resistance tests were performed for novel composite columns with different cross sections. The experiments were performed on the DHR-9401 drop hammer test machine. Three widely used nonlinear dynamic finite element software （i.e., MSC.Marc, ABAQUS and ANSYS/LS-DYNA） were adopted to simulate the impact experiments. Experimental results show that the composite columns have good impact resistances. For the specimens with the identical outside diameter and steel ratio, the concrete filled double skin steel tubes columns have the best impact resistance, followed by the hollow concrete filled steel columns and the concrete filled steel tube column with double H-shaped steel. In addition, among the simulated results, ABAQUS have the best agreement with the experiment results, followed by MSC.Marc and ANSYS/LS-DYNA. These observations can assist in providing suggestions for choosing the best section form of new large railway stations, and offering references for selecting suitable finite element software for impact resistance analysis.

关 键 词：复合柱 抗冲击试验 有限元法 抗冲击性能 站房柱 

分 类 号：TU398.9[建筑科学—结构工程]