冷却塔导流装置结构布置形式及受力特性研究-《建筑科学与工程学报》

文章信息/Info

Title:: Research on Structure Layout and Mechanical Characteristic of Guiding Device of Cooling Tower

Author(s):: CHEN Zheng-qing, TIAN Jing-ying, NIU Hua-wei, CHEN Jin-lin, LUO Shu-qing; Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University

Keywords:: cooling tower; guiding device; structural design; finite element simulation; ANSYS

摘要:: 为了获得自然通风冷却塔进风口导流板在风荷载作用下的受力特性以指导导流板的结构设计，采用ANSYS对其进行了有限元仿真分析。结果表明：导流板的位移与应力随剪刀撑的增多而减小，但减小的速度会逐渐减慢；导流板的位移与应力和导流板底部与基础连接的螺栓数量无关，但与其布置的位置有明显关系，螺栓位置越向外，导流板应力与位移越小；导流板位移与应力的最大值集中在最底部2根横梁和2根竖向立柱处；在设计时剪刀撑的最优数量为12对，底部固定螺栓只需4~5排，且应尽量靠外布置，最底部2根横梁和2根竖向立柱的尺寸应比其余杆件大。

Abstract:: In order to obtain the mechanical characteristic of guide plate at natural ventilation cooling tower air-inlet under wind load to guide design of this structure, the finite element simulation of guide plate was carried out using ANSYS. The results show that the displacement and stress of guide plates decrease when cross bridging increases, and the decreasing speed gradually slows down. The displacement and stress of guide plate have no relation with the bolts number of guide plate bottom connected with the foundation, but have a clear relation with the layout location of bolts. The more outward the bolt position is, the smaller the stress and displacement of guide plate are. The maximum value of displacement and stress of guide plate concentrate on two crossbeams at the bottom and two vertical columns. When guide plate is designed, the optimal number of cross bridging is 12 pairs, 4-5 rows of bolts at the bottom are needed, and should be arranged as far as possible outside. The size of two crossbeams at the bottom and two vertical columns should be larger than other members of guide plates.