条形封闭网架煤棚风荷载分布规律试验研究  

EXPERIMENTAL STUDY ON WIND LOAD DISTRIBUTION OF COAL SHED IN STRIP CLOSED COAL YARD

作　　者：郑肖楠 刘庆宽 崔会敏 郑云飞 ZHENG Xiao-nan;LIU Qing-kuan;CUI Hui-min;ZHENG Yun-fei(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;Department of Mathematics and Physics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Shijiazhuang Institute Of Railway Technology,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 [4]石家庄铁道大学数理系,石家庄050043 [5]石家庄铁路职业技术学院,石家庄050043

出　　处：《工程力学》2020年第S01期296-300,共5页Engineering Mechanics

基　　金：国家自然科学基金项目(51778381,11802186);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);河北省自然科学基金青年项目(E2018210113);河北省高等学校科学技术研究项目(BJ2019004)。

摘　　要：大跨度煤棚结构作为风敏感结构,在工程设计中应充分考虑风荷载的影响。该文以煤棚结构为研究对象,对其刚性模型进行风洞试验研究。考虑分别在0°、90°、180°和270°风向角下,煤棚两端弧面及天窗位置处风压分布情况,进一步分析煤棚表面特殊形状位置处体型系数随风向角的变化规律。研究表明:观察0°、90°、180°和270°风向角下各个测点的体型系数,发现风向角为90°时,弧面底部位置处,测点A1(B1)体型系数较大,在煤棚设计与施工中应针对该测点附近区域进行加固。对比分析各风向角下,天窗位置测点的体型系数,90°风向角下体型系数绝对值较大,认为此时风压较大,应适当对其加固。As a wind-sensitive structure,the large-span coal shed structure should fully consider the influence of wind load in engineering design.The coal shed structure is taken as the research object,and the wind tunnel test is carried out on its rigid model.Considering the wind angles of 0°,90°,180°and 270°respectively,distributions of wind pressure are obtained at skylight position and the arc surface at the ends of coal shed.The variation of body shape coefficient with the wind direction angle is further studied at the special shape position of coal shed surface,and the body shape coefficient of each measuring point is obtained at 0°,90°,180°and 270°wind direction angles.It shows that the measuring point A1(B1)has a larger body shape coefficient at the bottom of the arc when the wind direction angle is 90°.In the design and construction of coal shed,the area near the measuring point should be reinforced.Comparative analysis is performed on the body shape coefficient of the measurement point at sunroof position under different wind directions,showing that the absolute value of the body shape coefficient under 90°wind direction is larger,and some reinforcement should be conducted in that case.

关 键 词：风洞试验 风荷载 风向角 大跨屋盖 体型系数 

分 类 号：TU356[建筑科学—结构工程] TU312.1