前置定向窗对冷却塔倒塌效果的数值模拟研究  

Numerical Simulation Study of Collapse Effect of Cooling Tower Blasting with Front Directional Windows

作　　者：胡浩川 李鸿 余红兵 

机构地区：[1]贵州新联爆破工程集团有限公司,贵阳550000

出　　处：《爆破》2016年第1期100-104,共5页Blasting

基　　金：黔科合重大专项字[2015]6003;黔科合高G字[2015]4004;贵州省工业和信息化发展专项基金计划(2015030)

摘　　要：前置定向窗的开设是冷却塔能够扭曲倒塌的关键。通过高速摄影观测贵阳电厂冷却塔倒塌过程中因未开设前置定向窗从而导致倒塌长度超过预计范围。为了研究前置定向窗开设对冷却塔倒塌效果的影响,模拟了开设不同规格前置定向窗条件下的冷却塔在自重作用下的触地、扭曲变形、扭转撕裂、完全落地各阶段的时间和倒塌面积。模拟结果表明:前置定向窗切口越高,冷却塔扭曲撕裂过程越早,倒塌宽度越小,有助于控制塔身坍塌面积;定向窗宽度对冷却塔倒塌效果不明显;不同规格定向窗对冷却塔整体倒塌时间影响不大。The open of front directional windows is the key to the cooling tower twist to collapse. The length of collapse of cooling tower without pre directional window in Guiyang power plant exceeds the expected range by the high speed camera observed. In order to study the influence of directional front windowon on the cooling tower collapse effect,the time of touchdown,distortion,torsion tear,fully landed of cooling tower and its collapse range were simulated with different specifications of cooling tower under the action of gravity. The simulation results show that the higher pre directional window cutting,the more early cooling tower distortion tearing process,and the smaller width,which helps to control tower collapse area; The influence of width of directional window on cooling tower collapse effect is not obvious. The influence of different specification directional window on collapse time is also lesser.

关 键 词：冷却塔 前置定向窗 数值模拟 扭转撕裂 倒塌效果 

分 类 号：TU746.5[建筑科学—建筑技术科学]