空冷支架结构管柱体型系数与群柱效应研究  

STUDY ON BODY COEFFICIENT AND PILE CLUSTER EFFECT OF CONCRETE PIPE COLUMNS IN SUPPORT STRUCTURE SYSTEM OF AIR COOLED CONDENSER

作　　者：刘林[1] 白国良[1] 孔江涛[1] 赵春莲[2] 李红星[2] 

机构地区：[1]西安建筑科技大学,西安710055 [2]西北电力设计院,西安710032

出　　处：《工业建筑》2009年第3期43-47,共5页Industrial Construction

基　　金：国家自然科学基金资助项目(50778150);陕西省“13115”科技创新工程重大科技专项(2007ZDKG-39)

摘　　要：空冷支架结构下部为大直径群柱,上部为钢桁架平台,结构抗风设计时许多参数还不清楚。为掌握该类结构风压分布规律,对1∶150的刚性模型,进行风洞试验研究。同时利用FLUENT6.1流体软件对结构管柱所处风场进行数值模拟,获取不同工况下管柱的整体体形系数。详细介绍风洞试验结果与管柱表面风压试验数据处理方法,将试验结果与数值模拟结果进行对比,验证了CFD数值模拟技术的可行性。Under the support structure system of air cooled condenser there are large-diameter group columns, the proposed wind parameters in present load code can＇ t be used directly in the wind resistance design of this kind of structure. A rigid model with 1：150 scaling factor was made, and wind tunnel test was carried out to study the wind pressure distribution on the large-diameter columns. In order to obtain the body coefficient of the large-diameter column, FLUENT 6.1 software was used to simulate the wind field of the structure. Wind tunnel test for wind pressure distribution on pipe column surface and test data processing were presented in detail. The feasibility of CFD numerical simulation in wind resistance design of structure was verified by comparing the results of wind tunnel test with those of the simulation.

关 键 词：空冷支架结构 管柱 刚性模型 风洞试验 风压分布 体形系数 数值模拟 

分 类 号：TU312.1[建筑科学—结构工程]