水平阶跃荷载作用下单层球面网壳结构的动力稳定性  

Dynamic stability of single-layer reticulated domes under horizontal sudden loads

作　　者：郭海山[1] 王林安[1] 沈世钊[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《哈尔滨建筑大学学报》2002年第5期17-22,共6页Journal of Harbin University of Civil Engineering and Architecture

基　　金：国家自然科学基金重大项目(59895410.5.3)

摘　　要：以具有实际工程意义的40m跨度K8型单层球面网壳为研究对象,在分析单层网壳结构在水平阶跃荷载作用下动力失稳过程的基础上,探讨了网壳结构的动力稳定性临界荷载的判定方法,研究了矢跨比、弹塑性、阻尼和初始几何缺陷等因素对网壳结构动力稳定性临界荷载的影响,并进一步分析了水平阶跃荷载与水平静荷载及水平地震荷载作用下的稳定性临界荷载之间的关系.The dynamic stability of single-layer reticulated domes under horizontal sudden load was discussed. A practical method for studying dynamic stability of single-layer reticulated domes was put forward. A comprehensive numerical analysis on dynamic stability behavior of some prototype single-layer reticulated domes was carried out in terms of rise-to-span ratio, constitutive relation of steel, initial geometric imperfection and damping effect. The quantity relationship of critic loads of single-layer reticulated domes under horizontal sudden load, static load and earthquake action was discussed.

关 键 词：水平跃阶荷载 单层球面 网壳结构 动力稳定性 

分 类 号：TU356[建筑科学—结构工程]