背风墙面开孔的低矮房屋风致内压响应研究  

Wind-induced internal pressure response of low-rise buildings with leeward wall opening

作　　者：黄鹏[1] 陈胜 黄舜杰 HUANG Peng;CHEN Sheng;HUANG Shunjie(State Key Lab of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《振动与冲击》2020年第15期41-47,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(51678452)。

摘　　要：风灾中原本封闭的结构被破坏后将变成开孔结构,结构内压突然增大,将会加剧对结构的破坏。当前对风致内压的研究主要关注结构迎风面开孔的情况,而忽略了背风墙面开孔时的内压响应。从理论上推导了背风墙面开孔结构风致内压响应的计算方法,依据同济大学浦东实测基地低矮房屋在台风作用下的实测数据,对比了实测和理论计算得到的内压体系自振频率和内压响应,验证了该计算方法的准确性。最后对背风墙面合理开孔面积进行研究,建立了一套能够改善屋盖在强风中受力的开孔方法,并验证了该方法对于调控屋盖所受合力具有显著的效果。In wind disasters, closed structures after destroyed become opening ones, and their internal pressure suddenly increases to aggravate their damages. At present, the study on wind-induced internal pressure mainly is concentrated on structures with windward wall opening, ignoring cases of structures with leeward wall opening. Here, firstly the calculation method for wind-induced internal pressure response of structures with leeward wall opening was deduced theoretically. Then, natural frequencies of an internal pressure system and its internal pressure responses obtained from field measurements of low-rise buildings in the experimental base of Tongji University and those gained using the theoretical calculation method were compared to verify the correctness of the theoretical method. Finally, the reasonable opening area on leeward wall of low-rise buildings was studied to establish a set of opening methods for improving the load-bearing ability of low-rise buildings’ roofs under strong wind. It was shown that these methods have an obviously good effect on adjusting forces exerted on roofs.

关 键 词：风致内压 背风墙面开孔 现场实测 开孔面积 

分 类 号：TU312.1[建筑科学—结构工程] TU317.2