摘要
根据结构应变能等效,推导了大跨屋盖结构背景响应等效静力风荷载表达式,解决了大跨屋盖结构等效静力风荷载计算中需要兼顾多个等效目标的问题,并赋予了其明确的物理意义,即将其与脉动风荷载下结构的应变能联系起来。最后将该方法应用于国家体育场屋盖结构背景响应等效静力风荷载的计算以验证其有效性。
Based on strain energy equivalency,the background response equivalent static wind load of large span roofs is derived.It solves the matter that numerous structural response control objects should be considered in calculating the equivalent static wind load of large span roofs,and gives a clear physical meaning for the equivalent static wind load.This establishes the relationship between the structural strain energy and fluctuant wind loads.Finally,the method is used to the back equivalent static wind load analysis of the China National Stadium roof structure.The results illustrate that the method proposed in this paper is effective.
出处
《工程力学》
EI
CSCD
北大核心
2011年第5期166-171,共6页
Engineering Mechanics
基金
国家杰出青年科学基金项目(50725826)
北京市自然科学基金项目(8072017)
关键词
大跨屋盖
等效静力风荷载
背景响应
多目标
应变能
large-span roof
equivalent static wind load
background response
multi-objects
strain energy
