【作者】 唐铭；

【导师】 殷志祥；

【作者基本信息】 辽宁工程技术大学 ， 结构工程， 2007， 硕士

【摘要】 本文研究在强风作用下索膜结构的瞬态风致动力响应特性。根据Davenport谱应用MATLAB计算机语言编程模拟生成脉动风荷载时程作为激励样本,以深圳大学体育场看台挑蓬膜结构为例,研究索膜结构的风振响应特性;进行结构的稳定性控制研究时,本文对结构采取增加膜材弹性模量、增加初始预应力、增添加劲索等抗风加固措施分别进行计算;并将结构改进前后的分析结果进行详细对比分析,得出以上措施可有效控制结构整体稳定性。本文将索膜结构振动阶段分为短时强风脉冲阶段和稳态振动阶段;着重对短时间内强风作用下结构的瞬态动力响应曲线进行分析并对计算数据进行统计分析,得出索膜结构在短时强风作用下风响应特性;本文还对索膜结构进行静力稳定性分析和反应谱密度函数分析。更多还原

【Abstract】 This paper study transient wind-induced dynamic response’s characteristic of cable and membrane structure in the influence of strong wind. From Davenport chart,I apply MAYLAB computer language to simulate strong pulsant wind load. Paper exemplifies the membrane structure of ShenZhen University palaestra stand top and explain transient dynamic response’s characteristic of cable and membrane structure.Paper study how to control the stability of structure and adopt three resist-wind reinforce measures such as increasing the membrane elasticity module-amount、increasing original reinforce stress、add reinforce cable ect. I put forward that structure should been adopted correspond resistant wind reinforce defendable measure,and put up parallel analysis between original structure and advanced structure. This paper divide the whole vibration phase of cable and membrane into two phases such as short time strong-wind impulse phase and steady vibration phase.In short time paper conclude transient wind-induced dynamic response’s characteristic of cable and membrane structure.This paper analyze the static stability of structure and analyze response chart density function.更多还原