煤炭工程 ›› 2013, Vol. 45 ›› Issue (11): 120-122.doi: 10.11799/ce201311040

• 研究探讨 • 上一篇    下一篇

开敞式弧形屋盖的风压分布模拟分析

冯海英1,胡启平1,刘德乾2   

  1. 1. 河北工程大学土木工程学院
    2. 1,江苏省徐州中国矿业大学资源学院 2,河北省邯郸市河北工程大学土木学院
  • 收稿日期:2012-11-15 修回日期:2013-01-04 出版日期:2013-11-10 发布日期:2013-11-11
  • 通讯作者: 冯海英 E-mail:fenghy1106@163.com

Numerical simulation and optimizational design of wind pressure distribution on open-style arched roof

  • Received:2012-11-15 Revised:2013-01-04 Online:2013-11-10 Published:2013-11-11

摘要:

采用雷诺时均方法与重整化群(RNG) k-ε湍流模型,对在不同风向角时,不同竖向挡板尺寸的开敞式轻质弧形屋盖风压分布进行了数值模拟与分析。研究发现竖向挡板尺寸与风向角两个参数对屋面风压有显著影响,总体型系数会随着竖向挡板尺寸增大而减小;总体型系数会随着风向角增大而减小;随着风向角增大,挡板尺寸对屋盖风压的影响也会减弱。因此,在结构抗风优化设计,应结合实际风环境来确定优化措施,给结构设计提供依据。

关键词: 弧形屋面, 风压分布, 计算流体力学, 参数研究, 优化设计

Abstract:

Employing Reynolds-averaged method and RNG k-ε turbulent model, wind distribution on curved and open self-weighted roofs with vertical baffle of different sizes under several wind angles are numerically predicted and discussed. Results show that the baffle size and the wind angle have great influence on pressure distribution of the roof. Total shape coefficient of the roof decreases with the increase of the baffle size, as well as the increase of the wind angle. However, the influence on roof pressure by baffle size will decrease with the increase of the wind angle. Thus the structural wind resistive design should be optimized according to practical wind environment, and provide basis on structural design.

Key words: arched roof, wind pressure distribution, computational fluid dynamic, parametric study, optimizational design

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