不同截面钢管混凝土结构抗冲击性能比较  

COMPARISON OF IMPACT RESISTANCE OF DIFFERENT CONCRETE FILLED STEEL TUBE SECTIONS

作　　者：章琪[1] 蒋庆[2] 陆新征[2] 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]清华大学土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《工程力学》2013年第B06期89-93,共5页Engineering Mechanics

基　　金：铁道部科技研究开发计划重点课题(2012G003-J);清华大学自主研究项目(2012TH Z06);教育部新世纪优秀人才支持计划项目(NCET-10-0528)

摘　　要：为改善钢管混凝土构件抗冲击性能,该文采用基于ABAQUS的动力非线性有限元方法,对不同类型钢管混凝土跨中受冲击过程进行了仿真模拟,比较了不同构件抗冲击性能差异及破坏模式。结果表明:对于相同外径的实心钢管混凝土,增大钢管厚度能够明显改善其抗冲击性能;在一定范围内减少核心混凝土而以钢管代之,能够起到增强抗冲击性能的作用;相同钢材与混凝土用量的构件中,实心钢管混凝土抗冲击性能最佳。The impact resistance of different concrete filled steel tube sections under lateral impact loading is evaluated by using the finite element analysis based on ABAQUS. The different impact resistances and failure models are compared with each other. The results show that by increasing steel tube thickness, the impact resistance is obviously improved for a concrete filled steel tube that have an identical outer diameter, and that the impact resistance is also improved by using steel tubes to replace the core concrete to some extent. With the same steel ratio and concrete, the concrete filled steel tube section has the best impact resistance, compared with the hollow concrete filled steel tube section and other sections.

关 键 词：工程结构 抗冲击性能 有限元法 侧向冲击 破坏模式 

分 类 号：TU398.9[建筑科学—结构工程]