北京南站屋面雪荷载分布研究  

Study on snow loads on the roof of Beijing south station

作　　者：李雪峰[1] 周晅毅[1] 顾明[1] 

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：《建筑结构》2008年第5期109-112,共4页Building Structure

基　　金：国家自然科学基金创新研究群体科学基金(50621062);国家自然科学基金(50608060);同济大学青年优秀人才培养行动计划联合资助

摘　　要：基于空气相和雪相的关系为单向耦合的假设,采用了两相流理论模拟了风作用下雪的漂移过程。对通用流体软件FLUENT进行了二次开发,计算了在风作用下积雪发生迁移后屋盖表面的雪压分布,并对雪荷载改变量以及雪压分布的规律进行了分析,为结构设计提供了依据。Snow drifting in wind is considered as a two-phase flow. The mixture of air and snow is assumed to be one-way coupled so that the air phase can be treated as unaffected by the airborne snow. The numerical simulation employs the commercial CFD software, FLUENT, with additional user C code added to model snow drift. The regularity of the redistribution of snow loads on the roof of Beijing south station is discussed, which provides a basis for design of structure.

关 键 词：大跨度屋盖结构 CFD 两相流 雪漂 雪荷载 

分 类 号：TU472[建筑科学—结构工程] TU765[建筑科学—土工工程]