【摘要】 国家网球馆是一座带有开合屋盖的现代大型体育场馆。在设计中提出开合屋盖的性能指标与设计荷载取值方法。屋盖开合状态对风荷载敏感,需要通过风洞试验确定风压分布与脉动特性。活动屋盖运行过程中台车反力不断变化,需要通过对其移动过程分析,找出最不利位置。研究了各种开合位置的结构动力特性,采用时程法与振型分解反应谱法分析活动屋盖在多遇地震作用下的响应。此外,在活动屋盖移动对固定屋盖轨道桁架变形影响分析的基础上,提出一种适用于圆形平面带矩形洞口结构的起拱曲面方程。更多还原

【Abstract】 National Tennis Court is a modern sports stadium with retractable roof.The structural performance and the loading evaluation method for retractable roof structure were proposed.Wind load is sensitive for the roof when the retractable roof is opened or closed,so wind tunnel tests were demanded to determine the distribution of wind pressure and its pulsation characteristics.The reaction force of trolley varies during its motion,and the most unfavorable position was identified through analyzing the moving process.The dynamic characteristics of the retractable roof were studied at its opening and closing position.The responses of retractable roof under frequent earthquake were analyzed using time-history method and seismic response spectrum method.Based on the effect of the retractable roof on the track deformation analysis of fixed roof,a kind of method of pre-camber for circular plane structure with a rectangular hole was proposed.更多还原