【摘要】 历次风灾调查证实,由于台风中门窗受损建筑物突然开孔而出现较高的风致内压是造成建筑物山墙倒塌、屋面掀翻破坏的主要原因之一。国内对突然开孔状态下的风致内压及其对柔性屋盖结构的作用研究甚少,从理论分析方法和风洞试验两方面全面回顾和总结了国外关于建筑物在开孔情况下风致内压的研究成果,比较分析了刚性和柔性结构的内压瞬态波动理论,明确突然开孔时弹性屋盖发生共振的条件和机理,同时介绍了突然开孔情况下风致内压及屋面结构风振响应风洞试验研究结果,并提出了进一步研究的方向。更多还原

【Abstract】 All previous wind disaster investigations have substantiated that higher wind-induced internal pressure in the case of sudden opening due to destroy of windows or doors during hurricane is one of the major cautions for collapse of fastigiums and roofs.Few of domestic studies on wind-induced internal pressure and its effects on roof structure are carried out.This paper reviews analytical and experimental investigations on the internal pressure properties and its effects on roof structures in recent years.The transient wind-induced internal pressures on rigid roofs are compared with that of flexible ones,and then the conditions and mechanism of the resonant vibration of flexible roofs in the case of sudden opening are discussed.Futhermore,the results from wind-tunnel tests and theoretic researches of a building with flat roof are briefly introduced.更多还原