基于应变能等效的大跨屋盖结构背景响应等效静力风荷载  

EQUIVALENT STATIC WIND LOAD OF LARGE-SPAN ROOFS BASED ON ENERGY EQUATION

作　　者：李玉学[1,2] 杨庆山[2] 田玉基[2] 

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《工程力学》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)

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.

关 键 词：大跨屋盖 等效静力风荷载 背景响应 多目标 应变能 

分 类 号：TU393.3[建筑科学—结构工程] TU312