双圆形煤棚风荷载分布研究  

STUDY ON THE WIND LOAD DISTRIBUTION OF CIRCULAR COAL SHEDS

作　　者：王策 刘庆宽 贾娅娅 WANG Ce;LIU Qing-kuan;JIA Ya-ya(School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China;Wind Engineering Research Center, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province, Shijiazhuang 050043, China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]石家庄铁道大学风工程研究中心,石家庄050043 [3]河北省风工程和风能利用工程技术创新中心,石家庄050043

出　　处：《工程力学》2019年第B06期165-169,共5页Engineering Mechanics

基　　金：国家自然科学基金项目(51778381);河北省自然科学基金项目(E2018210044);河北省高等学校高层次人才项目(GCC2014046)

摘　　要：近年来,新建煤棚朝着大跨度、轻质量的方向快速发展,是一种风敏感结构,因此对其进行风荷载相关研究具有重要意义。该文以某新建圆形煤棚网架结构为研究对象,通过风洞试验的方法,研究了不同风向角下,在煤棚顶部、底部的风荷载体型系数的分布情况,并分析了两个临近的圆形煤棚之间的风荷载体型系数的相互影响。研究表明:在不同风向角下,煤棚顶部均承受负压。当两煤场之间的距离较近时,两煤棚上的风荷载体型系数相互影响显著。并且发现在两煤棚之间的区域,风荷载体型系数的绝对值相对较小。Recent new coal sheds are developing rapidly in the direction of large span and light weight,which are a kind of wind-sensitive structure,so it is of great significance to study the wind load.In this paper,a new round coal-shed grid structure is studied.By the wind tunnel test method,the distributions of the wind load carrier type coefficients at the top and bottom of the coal shed under different wind angles are studied.The interaction of wind load carrier type coefficients between two adjacent circular coal sheds is analyzed.The results show that under different wind angles,the top of the coal roof is subjected to negative pressure.When the distance between the two coal fields is small,the wind-load carrier type coefficients of the two coal sheds have obvious influence on each other.It is found that the absolute value of the wind load carrier type coefficient is relatively small in the area between the two coal sheds.

关 键 词：风工程 体型系数 风洞试验 圆形煤棚 风向角 

分 类 号：TU312.1[建筑科学—结构工程]