暴风雪作用下轻型钢结构房屋的损伤特征分析  

Analysis on Damage Characteristic of Light Steel Structure Under the Snowstorms

作　　者：吴长[1] 金恩平[1] 王秀丽[1] 

机构地区：[1]兰州理工大学土木工程学院,兰州730050

出　　处：《工业安全与环保》2010年第12期22-24,共3页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金项目(50678078)

摘　　要：基于雪灾事故的调查研究,对轻钢结构房屋在风荷载、雪荷载不同作用情况下的损伤特征及其结构受力性能进行了有限元分析。结果表明,风力涡旋效应造成屋面雪载的分布极不均匀,受损处常集中在屋面1/4和3/4跨附近;基本风、雪荷载值偏低以及轻型钢结构房屋的鲁棒性差,往往因局部损坏导致整体性坍塌。Based on the investigation of the accidents,this paper conducts finite element analyses on the damage characteristics and structural properties under the effects of wind and snow load.It shows that the unevenly distributed snow load on roof is created by the wind vortex effect,damage and destruction often focuses on roof 1/4 and 3/4 across nearby;because the value of basic wind load and snow load is low,and robustness of light steel structure is bad,the integrity collapsed often happens due to local damage.

关 键 词：轻型钢结构 雪灾效应 损伤特征 有限元法 

分 类 号：TU392.5[建筑科学—结构工程]