[1]郑德乾,刘帅永,顾明,等.大跨镂空网格屋盖风荷载数值模拟研究[J].郑州大学学报(工学版),2021,42(03):93.
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大跨镂空网格屋盖风荷载数值模拟研究(/HTML)
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
42
期数:
2021年03期
页码:
93
栏目:
出版日期:
2021-05-10

文章信息/Info

作者:
郑德乾 刘帅永 顾明 全涌 潘钧俊 周健
文献标志码:
A
Abstract:
Wind load of the long span roof was numerically investigated by adopting CFD simulation method. The present numerical method was firstly verified by comparing the simulated base force of the section roof model with the force balance wind tunnel experimental data. Effects of the PV panel density and the supporting buildings on the wind load distribution on the roof were then investigated. The wind load distribution mechanism was analyzed based on the simulated flow field. Finally , the base force and the wind pressure distribution on the whole roof were presented and compared with those of the old scheme roof. The CFD simulation method was verified to be capable in predicting the mean wind load on the long span hollow grid roof structure. Wind effect on the roof was dominated by the horizontal wind load. The vertical wind load was mainly wind suction which was favorable for the structure. Inhomogeneous distribution of local wind suction was observed on the roof ,especially at the bottom surface of the roof. Large wind suction was easy to cause local wind-induced damage in those zones. In comparison with the PV panel density , the supporting buildings could have more remarkable influence on both the base wind forces and local wind pressure distribution on the roof structure .The existence of the supporting buildings could not only increase the vertical wind suction on the whole roof body, but also could enlarge the local wind suction on some part of the bottom of the roof.
更新日期/Last Update: 2021-06-24