北京建筑大学学报2024，Vol.40Issue(4)：97-103,7.DOI:10.19740/j.2096-9872.2024.04.12
某大跨度带天窗双层网架结构风压分布研究
Research on Wind Pressure Distribution of a Large-Span Double Layer Grid Structure with Skylight
摘要
Abstract
Due to the numerous members and complex shapes of large-span structures,which are not covered by all the relevant parameters for complex structural design in Chinese regulations,there is often a lack of reference basis in structural design.Therefore,it is necessary to study the wind resistance design of large-span spatial structures.Based on the practicle engineering,the numerical simulation(CFD)method with lower cost and higher efficiency is used to study the wind pressure of the large-span grid structure with skylight.Based on the the grid structure aided design software STADS and Fluent interface development program,the partition model of the grid structure with skylight is established,the numerical wind field calculation domain is generated and the calculation results are output,which greatly improves the calculation efficiency.Finally the wind pressure distribution law of the corresponding structure is summarized through comparative analysis.Through the comparative analysis of the wind pressure distribution in the two cases of structural skylight opening and closing,it is found that the overall wind pressure distribution law of the two structural forms is consistent,but there are local differences,and the structural fenestration can effectively reduce the overall wind pressure value and reduce the wind suction force of the structure,but it will increase the pressure at the bottom of the structure and increase the reaction force of the structural support.It provides a favorable reference for the design and construction of large-span skylight grid structure.关键词
筒壳网架结构/风压分布/多风向角/风场模拟Key words
tubular shell grid structure/wind pressure distribution/multiple wind angles/wind field simulation分类
建筑与水利引用本文复制引用
郭绩超,王孟鸿,刘迪..某大跨度带天窗双层网架结构风压分布研究[J].北京建筑大学学报,2024,40(4):97-103,7.基金项目
国家自然科学基金项目(51578038). （51578038）
