近爆作用下压型钢板组合楼板动力响应及影响因素数值分析  

Numerical analysis for dynamic responses and influencing factors of profiled steel-concrete composite slab under near explosion

作　　者：张秀华[1,2] 高珊[1] 吴建[1] 

机构地区：[1]东北林业大学土木工程学院,哈尔滨150040 [2]江苏省结构工程重点实验室,江苏苏州215011

出　　处：《土木建筑与环境工程》2016年第5期50-58,共9页Journal of Civil,Architectural & Environment Engineering

基　　金：江苏省结构工程重点实验室开放课题(ZD1303)~~

摘　　要：利用有限元软件ANSYS/LS-DYNA,采用流固耦合的计算方法,对压型钢板组合楼板在近爆炸荷载作用下进行了不同工况的数值模拟,得出其受力形态,分析其动力响应及破坏过程,找出影响楼板动力响应的主要因素。数值分析结果表明:适当增加混凝土厚度和提高压型钢板强度,可以显著降低组合楼板的跨中最大位移,提高组合楼板的延性和抗爆性能;组合楼板中钢筋间距的变化,对组合楼板抗爆性能影响较小。Explicit dynamic finite element program ANSYS/LS-DYNA is adopted.According to the method of fluid-structure interaction,profiled steel-concrete composite slab is simulated under near explosion in different conditions.And the stress form,the dynamic responses and failure process were analysed.Numerical analysis results show that the largest displacement of composite floor slab can be significantly reduced with increasing the thickness of the concrete and improve the strength of the steel plate.The ductility and anti-explosion performance of composite floor slab can be improved.The anti-explosion performance of composite floor slab has less effect by changing reinforced spacing.The reference and basis can be provided for antiknock design of profiled steel-concrete composite slab.

关 键 词：爆炸荷载 组合楼板 动力响应 影响因素 数值分析 

分 类 号：TU398.9[建筑科学—结构工程]