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.
出处
《工业安全与环保》
北大核心
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)
关键词
轻型钢结构
雪灾效应
损伤特征
有限元法
light steel buildings snowstorms effect damage characteristic finite element method
