钢管活性粉末混凝土受压长柱动力稳定性研究  

Dynamic Stability of Axially Loaded Reactive Powder Concrete Filled Steel Tube Slender Column

作　　者：罗华[1] 王玮玮[1] 王光辉[1] 李斌[1] 童小龙[1] 彭楚才 LUO Hua;WANG Weiwei;WANG Guanghui;LI Bin;TONG Xiaolong;PENG Chucai(School of Civil and Architectural Engineering,Hunan Institute of Science and Technology,Yueyang 414006,China)

机构地区：[1]湖南理工学院土木建筑工程学院

出　　处：《湖南理工学院学报（自然科学版）》2019年第3期44-47,共4页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：国家自然科学基金项目(51708209);湖南省教育厅科研项目(18B360,18C0638);湖南省大学生创新创业训练计划项目(湘教通[2019])

摘　　要：根据弹性体系动力稳定理论,基于Hamilton原理建立了钢管RPC柱在轴向周期荷载作用下的动力偏微分方程.通过分析柱长径比、动力荷载恒荷分量、RPC弹性模量等参数对轴心受压柱动力稳定性的影响,探讨了钢管RPC长柱发生参数振动时的动力稳定性,并求解得到了不同杆端约束下柱的动力稳定参数,为钢管RPC受压长柱的动力分析与工程设计提供依据.Based on the dynamic stability theory of an elastic system,parametric vibration equations of Reactive Powder Concrete-filled (RPC)steel tube slender column subjected to a periodic load were established respectively by adopting the Hamilton principle.The dynamic stability problems of parametric vibration were discussed through analyzing the effects of slenderness ratio, constant load and elastic modulus of RPC materials etc.on the dynamic instability regions of axial compression column,reference basis for the dynamic analysis and design in structure engineering is provided.

关 键 词：钢管活性粉末混凝土 动力稳定性 参数共振 临界荷载 

分 类 号：TU311[建筑科学—结构工程]