摘要
强降雨通常伴有强风作用,风向成为影响结构表面压力分布的重要因素之一。目前大跨度挑檐屋盖设计基本只考虑垂直于结构表面的单独雨荷载作用,对风雨联合作用下建筑表面压力分布研究甚少。研究风雨联合作用下,不同风向对大跨度悬挑屋盖表面的压力分布影响特性。基于数值模拟平台,采用欧拉-欧拉方法,模拟得到了不同风向工况下大跨度悬挑屋盖结构表面平均压力分布规律,并研究得到了一次自然降雨过程中最不利抗风雨位置,对相应大跨度悬挑结构设计提出了有益参考。
Heavy rainfall is often accompanied by strong wind;wind direction is one of the important factors affecting the pressure distribution over a structure surface.The current large-span roof overhang design considers only single rain load perpendicular to the structure surface;however,research on the pressure distribution over building surfaces under the effect of wind-driven rain is limited.In this paper,the pressure distribution characteristics over the surface of a large span cantilever roof is studied considering different wind directions.Based on a numerical simulation platform,the average pressure distribution over the surface of a long-span cantilever roof structure is obtained under different wind conditions by using the Euler-Euler method.In addition,the most unfavorable position for wind resistance is also obtained in a natural rainfall process.The findings should provide beneficial references for the design of large span cantilever structures.
作者
孙芳锦
王岩露
冯旭
吕艳卓
SUN Fangjin;WANG Yanlu;FENG Xu;LYU Yanzhuo(College of Civil Engineering and Architecture,Liaoning Technical University,Fuxin 123000,China;Mcc5 Group Shanghai Co.Ltd.,Shanghai 201900,China)
出处
《防灾减灾工程学报》
CSCD
北大核心
2018年第3期542-547,共6页
Journal of Disaster Prevention and Mitigation Engineering
基金
辽宁省教育厅基金项目(LJYL030)资助
关键词
悬挑屋盖
风雨联合作用
压力分布
来流风向
欧拉-欧拉方法
cantilever roof
combined effect of wind-driven rain
pressure distribution
flow direction
Euler-Euler method