| 局部开洞的折叠网壳结构表面风压分布研究 |
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| 引用本文： | 颜卫亨, 王剑, 吴东红, 张茂功. 局部开洞的折叠网壳结构表面风压分布研究[J]. 工程力学, 2013, 30(10): 184-191. DOI: 10.6052/j.issn.1000-4750.2012.06.0462 |
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| 作者姓名： | 颜卫亨 王剑 吴东红 张茂功 |
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| 作者单位： | 1.长安大学建筑工程学院，陕西，西安710061；;2.中国民航机场建设集团公司西北分公司，陕西，西安710075；;3.长安大学理学院，陕西，西安710061；;4.总后建筑工程研究所，陕西，西安710033平均风压系数Cpi平均风压系数Cpi平均风压系数Cpi |
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| 基金项目： | 总后建筑工程研究所研究基金项目 |
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| 摘 要： | 为了研究局部开洞的折叠网壳结构表面风压分布，基于流体动力学基本原理，探讨了房屋局部开洞下计算域的选取，计算方法、边界及壁面条件的确定。运用计算流体动力学软件Fluent6.3建立了计算模型，数值模拟得到开洞结构内外表面风压系数等值线的分布。在此基础上，分析了开洞结构房屋在不同风速，不同风向角，不同开洞位置及大小等主要因素下风场的分布规律，并与未开洞结构表面风压分布规律和内压系数估算公式所得到的结果进行了对比，其规律性吻合较好。通过内外表面风压系数，得到净体型系数的分布，提出应用于抗风设计的净体型系数分布表。
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| 关 键 词： | 折叠网壳 风荷载 数值模拟 局部开洞 净体型系数 内压系数估算公式 |
| 收稿时间： | 2012-06-28 |
| 修稿时间： | 2013-01-21 |
SURFACE WIND PRESSURE DISTRIBUTION OF FOLDED RETICULATED SHELL STRUCTURES WITH LOCAL OPENING |
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| YAN Wei-heng, WANG Jian, WU Dong-hong, ZHANG Mao-gong. SURFACE WIND PRESSURE DISTRIBUTION OF FOLDED RETICULATED SHELL STRUCTURES WITH LOCAL OPENING[J]. Engineering Mechanics, 2013, 30(10): 184-191. DOI: 10.6052/j.issn.1000-4750.2012.06.0462 |
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| Authors: | YAN Wei-heng WANG Jian WU Dong-hong ZHANG Mao-gong |
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| Affiliation: | 1.School of Civil Engirneering,Chang02019;an University, 02019;an, Shaanxi 710061, China;;2.China Airport Construction Group Corporation of CACC Northwest Branch, 02019;an, Shaanxi 710075, China;;3.School of Sciences, Chang02019;an University, 02019;an, Shaanxi 710061, China;;4.General Logistics Department Institute for Construction Engineering, 02019;an, Shaanxi 710033, China |
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| Abstract: | The numerical model of folded reticulated shell with local opening was established based on the computational fluid dynamics code Fluent 6.3. The size of the computational domain, the boundary conditions and interface conditions were discussed. The contours of wind pressure coefficients for the inner and outer surface of the reticulated shell with local opening were obtained. Parametric studies were carried out to investigate the influence of wind speed, wind direction, the location and the size of the opening on the distribution characteristics of the wind pressure. The wind pressure was compared with that obtained from the empirical formula and good agreements can be observed. The net wind load shape coefficient was obtained based on the wind pressure coefficients of the inner and outer surface. |
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| Keywords: | folded reticulated shell wind load numerical simulation local opening net wind load shape coefficient formula estimating wind pressure |
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