鞍形膜结构风荷载非高斯特性研究
Non-Gaussian Characterization of Wind Loads on Saddle Membrane Structures
孙芳锦 1王蕾 1李智达 1欧维1
作者信息
- 1. 桂林理工大学土木工程学院,桂林 541004
- 折叠
摘要
为研究鞍形膜结构风压分布规律,探究0°、45°、90°等3个风向角下鞍形膜结构表面风压分布特性,利用ANSYS WORKBENCH平台,进行鞍形膜结构3个角度的风荷载数值模拟分析,通过TTU标准模型试验对比验证数值模拟方法的正确性.结果表明,有限元模型与标准试验吻合.在不同风向角下,膜结构表面风压的非高斯区域会有所改变,但都集中在膜边缘位置.文中给出了鞍形膜结构非高斯区域划分标准及划分示意,在设计鞍形膜结构时应当注重非高斯区域的加固,以提升鞍形膜结构的安全性和稳定性.
Abstract
In order to study the wind pressure distribution law of saddle-shaped membrane structure and investigate the surface wind pressure distribution characteristics of saddle-shaped membrane structure under three wind angles,such as 0°,45°,90°,etc,the ANSYS WORKBENCH platform was used to carry out numerical simulation and analysis of the wind load of saddle-shaped membrane structure at three angles,and the correctness of the numerical simulation method was verified by comparing with the standard model test of TTU.The results show that the finite element model matches the standard test.It is concluded that the non-Gaussian region of the wind pressure on the surface of the membrane structure changes under different wind angles,but all of them are concentrated at the edge position of the membrane.The non-Gaussian region delineation standard and the delineation schematic are given,and the reinforcement of the non-Gaussian region should be emphasized in the design of saddle-shaped membrane structure in order to improve the safety and stabili-ty of saddle-shaped membrane structure.
关键词
张拉膜结构/风压系数/非高斯/数值模拟Key words
tensioned membrane structure/wind pressure coefficient/non-Gaussian/numerical simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据