冲击荷载作用下圆钢管约束方钢管混凝土柱的动力响应分析  

Dynamic Response of Circular Steel Tube Confined Concrete-Filled Square Steel Tubular Columns Under Impact Loading

作　　者：孙颖[1] 缪鹏飞 毕岩凇 滕振超[1] SUN Ying;MIAO Pengfei;BI Yansong;TENG Zhenchao(School of Civil Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318

出　　处：《河南科学》2025年第4期543-552,共10页Henan Science

基　　金：黑龙江省自然科学基金联合引导项目(LH2020E018)。

摘　　要：为研究圆钢管约束方钢管混凝土柱的抗侧向冲击性能,对已有的冲击试验进行了验证,模拟结果与实验结果误差在5%以内,建模有效。在验证模型基础上建立了不同冲击速度和落锤质量的圆钢管约束方钢管混凝土柱在侧向冲击作用下的有限元模型。结果表明:在冲击荷载作用下,圆钢管为内部核心混凝土提供良好的保护,冲击速度与落锤质量对于构件的位移及动能具有显著的作用效果,增加冲击速度和落锤质量均会使组合柱的冲击力和冲击处位移增加,落锤动能增加,从而使冲击作用的持续时间延长,进而增加构件的变形和能量吸收。因此,应合理考虑冲击速度和落锤质量对构件抗冲击性能的影响,为工程实践提供理论依据。This study validates existing impact tests to investigate the lateral impact resistance of concrete-filled square steel tubular columns confined by circular steel tubes.The discrepancy between simulation and experimental results is within 5%,confirming the effectiveness of the model.Using the validated model,a finite element model is developed to analyze concrete-filled square steel tubular columns under lateral impact at varying velocities and drop weights.Results indicate that under impact loading,the circular steel tube effectively protects the core concrete.Impact velocity and drop hammer mass significantly influence the component’s displacement and kinetic energy.Higher impact velocity and drop hammer mass enhance impact force and column displacement while increasing kinetic energy,prolonging impact duration,and improving deformation and energy absorption.Therefore,the effects of impact velocity and drop hammer mass on impact resistance should be properly considered to provide a theoretical basis for engineering applications.

关 键 词：圆钢管约束方钢管混凝土柱 冲击速度 落锤质量 动力响应 有限元模拟 

分 类 号：TU393.9[建筑科学—结构工程]