基于内力的高层建筑顺风向等效静力荷载研究  

ALONG-WIND EQUIVALENT STATIC LOAD OF HIGH-RISE BUILDINGS

作　　者：汪大海[1] 梁枢果[2] 

机构地区：[1]同济大学建筑工程系,上海200092 [2]武汉大学土木工程学院,武汉430070

出　　处：《工程力学》2010年第1期134-140,共7页Engineering Mechanics

摘　　要：该文应用振型加速度法求解高层建筑的顺风向风致随机内力响应,得到以恢复力表示的包含拟静力项和惯性力项的内力解。在此基础上提出了基于风致内力的等效静力荷载及简化分布公式。考察了目前国内外多种等效静力荷载方法的有效性,最后通过数值算例的比较说明该方法具有适用范围广、精度高、收敛快的特点。The mode-acceleration method is applied to analyze the random intemal force responses of buildings induced by along-wind. The frequency domain solution in terms of restoring forces consists of quasi-static item and inertia item. A new along-wind static equivalent load based on internal forces is deduced accordingly. Its precision and validity are investigated through a comparison with other equivalent static load methods. The proposed method has the advantages of convenient calculation, high precision, and wide application.

关 键 词：高层建筑 等效静力荷载 恢复力 振型加速度法 振型叠加法 

分 类 号：TU312.1[建筑科学—结构工程]