薄膜结构的动力反应分析  

Dynamic analysis of membrane structures

作　　者：乔磊[1] 谭峰[2] 杨庆山[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]北京建工集团有限责任公司国际工程部,北京100055

出　　处：《振动与冲击》2011年第6期109-113,共5页Journal of Vibration and Shock

摘　　要：基于动力分析的Newmark法和非线性分析的全Newton-Raphson迭代法,编制程序进行薄膜结构的非线性动力反应分析;利用主应力-主应变判别准则确定褶皱区域并采用修正本构矩阵法考虑局部褶皱引起的物理非线性;通过案例分析总结了薄膜结构振动形态的波动性和非线性特点;分析了马鞍形薄膜结构在风荷载作用下的动力反应,讨论了膜材褶皱对薄膜结构动力反应的影响。Based on the Newmark method in dynamic analysis and the full Newton-Raphson iteration method in nonlinear analysis,the nonlinear dynamic response of membrane structure was analysed by applying self-made program.Principal stress-strain criterion was used for determining wrinkling areas.And the modified constitutive relationship method was adopted to consider the physical nonlinearity caused by local wrinkle.The fluctuation and the nonlinear characteristic of vibration pattern of membrane structure were summarized through cases study.The dynamic response of membrane structure with saddle shape was analyzed under the wind loading.The influence of membrane wrinkling on dynamic response of membrane structure was discussed.

关 键 词：薄膜结构 褶皱分析 动力分析 自振特性 风荷载 

分 类 号：TU381[建筑科学—结构工程]