全封闭大跨煤棚体型系数数值模拟研究分析

Research on the shape coefficient distribution of fully enclosed long-span coal shed

近几年国家对环保审查越来越严格,当前的煤棚工程均要求采用或改造为全封闭煤棚。煤棚属于大跨屋盖结构,具有较低的刚度,风荷载是起控制作用的主要条件,因此,风荷载体型系数的取值是煤棚设计最为关键的数据信息。目前关于国内超大跨(跨度≥150m)煤棚的风响应特性研究较少,缺少相关数据的总结。因此依托CFD数值模拟分析,对典型跨度的超限大跨煤棚风荷载体型系数的分布规律进行深入研究。

In recent years,the national environmental protection review has become more and more strict.The current coal shed projects require to use or transform to fully enclosed coal sheds.The coal shed is a long-span roof structure with low stiffness,and the wind load is the main control condition.Therefore,the value of wind load shape coefficient is the key data information in the design of coal shed.At present,there are few studies on the wind response characteristics of super large span(span≥120 m)coal shed in China,and there is a lack of relevant summary data.Therefore,based on CFD numerical simulation analysis,this paper makes an in-depth study on the distribution law of wind load shape coefficient of transfinite and long-span coal shed with typical span.