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浙江大学学报(工学版)
浙江大学学报(工学版)  2024, Vol. 58 Issue (7): 1467-1478    DOI: 10.3785/j.issn.1008-973X.2024.07.016
交通工程、土木工程     
联排凹曲面屋盖的风荷载特性试验研究
郝树仁1(),李天娥1,*(),彭辉2,武海全2,闫月勤2,李海旺1,苏宁3
1. 太原理工大学 土木工程学院，山西 太原 030024
2. 山西五建集团有限公司，山西 太原 030013
3. 东北电力大学 建筑工程学院，吉林 吉林 132012
Experimental study on wind load characteristics of continuous roof with concave surface
Shuren HAO1(),Tian’e LI1,*(),Hui PENG2,Haiquan WU2,Yueqin YAN2,Haiwang LI1,Ning SU3
1. College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2. Shanxi Fifth Construction Group Limited Company, Taiyuan 030013, China
3. School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin 132012, China
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摘要：

为了探究凹曲面屋盖的风荷载特性并为实际工程提供抗风设计参考，对3种联排凹曲面屋盖进行刚性模型风洞测压试验，系统分析联排数及风向角对凹曲面屋盖升力系数、平均风压系数和极值风压系数的影响. 结果表明：屋盖整体升力系数随着联排数的增加不断降低，各屋盖的升力系数受风向角影响较大. 在不同联排数及风向角下，屋盖整体承受向上的风吸力，屋盖的平均风压系数表现出复杂的波动性；在迎风屋盖边缘处的气流分离现象明显，导致该处存在较大风吸力；越远离迎风侧的屋盖，平均风压系数的波动越小，稳定于?0.1. 联排数对极值风压系数的影响不可忽略，尤其是极小值负压系数，边缘屋盖分区极小值负压系数的最小值为?5.1，中间屋盖分区极小值负压系数的最小值为?3.3. 基于试验结果，总结给出不同联排凹曲面屋盖分区的平均风压系数和极值风压系数.
关键词： 凹曲面屋盖;  风洞试验;  风荷载;  干扰效应;  风压分区    
Abstract:

Wind tunnel pressure measurement tests on rigid models of three types of concave surface roofs with different continuous roof numbers were conducted to study the wind load characteristics and provide wind resistance design references for practical engineering. The influences of continuous roof numbers and wind direction angle on the lift coefficient, mean wind pressure coefficient, and peak wind pressure coefficient were systematically analyzed. The results show that the overall lift coefficient decreases with the increase of continuous roof numbers, and the lift coefficient of each roof is greatly affected by the wind direction angle. Under the conditions of different continuous roof numbers and wind direction angles, the whole roof withstands upward wind suction and the mean wind pressure coefficient exhibits complex fluctuations. A significant airflow separation phenomenon appears at the edge of the windward roof, corresponding to high wind suction. The further away from the windward roof, the more stable the distribution of the mean wind pressure coefficient, which was stable at about ?0.1. The continuous roof numbers exhibit a significant influence on the peak pressure coefficient, especially on the negative peak wind pressure coefficient. The minimum value of the negative peak wind pressure coefficient was ?5.1 for the edge roof and ?3.3 for the middle roof. Based on the test results, the mean and peak wind pressure coefficients for different zoning continuous roofs with concave surfaces were given out.
Key words: concave surface roof    wind tunnel test    wind load    interference effect    wind pressure zoning
收稿日期: 2023-06-29 出版日期: 2024-07-01
CLC:  TP 393.3  
基金资助: 国家自然科学基金资助项目（52202415）；山西省基础研究计划资助项目（202203021221044）；山西五建集团有限公司科研项目（RH2100002871）.
通讯作者: 李天娥     E-mail: pangshijin2021@163.com;woshitiane@126.com
作者简介: 郝树仁（1999—），男，硕士生，从事结构风工程研究. orcid.org/0009-0001-8316-1058. E-mail：pangshijin2021@163.com
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郝树仁
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引用本文:

郝树仁,李天娥,彭辉,武海全,闫月勤,李海旺,苏宁. 联排凹曲面屋盖的风荷载特性试验研究[J]. 浙江大学学报(工学版), 2024, 58(7): 1467-1478.

Shuren HAO,Tian’e LI,Hui PENG,Haiquan WU,Yueqin YAN,Haiwang LI,Ning SU. Experimental study on wind load characteristics of continuous roof with concave surface. Journal of ZheJiang University (Engineering Science), 2024, 58(7): 1467-1478.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2024.07.016    或    https://www.zjujournals.com/eng/CN/Y2024/V58/I7/1467

工况屋盖形式联排数测点数
R1A单跨122
R2B-C双跨210
R3B-C-A三跨332
表 1  风洞试验工况及测点
图 1  三跨屋盖测点布置及风向角
图 2  风洞试验安装示意图
图 3  风洞试验的参数设置
项目尺度/m风速/(m·s?1)时间/min
模型尺度110.01.0
原型尺度25029.883.9
表 2  风洞试验缩尺比
图 4  屋盖整体及边缘屋盖的升力系数
图 5  不同屋盖形式的升力系数
图 6  平均风压系数分布
屋盖形式Cp
θ=0°θ=30°θ=60°θ=90°
A(迎风屋盖)?0.36?0.38?0.41?0.52
C(中间屋盖)?0.48?0.34?0.09?0.07
B(背风屋盖)?0.45?0.36?0.20?0.07
表 3  不同风向角下屋盖的整体平均风压系数（R3工况）
图 7  平均风压的屋盖分区
图 8  平均风压系数的分区值
分区Cp，R1工况Cp，R2工况Cp，R3工况
θ=0°θ=30°θ=60°θ=90°θ=0°θ=30°θ=60°θ=90°θ=0°θ=30°θ=60°θ=90°
B1————?0.88?0.54?0.06?0.04?0.91?0.61?0.050.02
B2————?1.02?0.67?0.06?0.08?1.05?0.73?0.070.01
B3————?1.05?0.74?0.27?0.16?1.08?0.77?0.25?0.09
B4————?1.01?0.90?0.63?0.23?1.04?1.48?0.59?0.17
B5————?0.22?0.18?0.05?0.12?0.19?0.08?0.05?0.03
B6————?0.23?0.11?0.04?0.16?0.21?0.09?0.08?0.03
B7————?0.25?0.22?0.24?0.25?0.24?0.03?0.28?0.12
B8————?0.27?0.39?0.39?0.31?0.27?0.44?0.39?0.22
B9————?0.09?0.05?0.010.07?0.07?0.02?0.060.07
B10————?0.10?0.08?0.010.05?0.07?0.10?0.100.06
B11————?0.11?0.21?0.13?0.09?0.09?0.14?0.22?0.09
B12————?0.14?0.28?0.25?0.26?0.11?0.35?0.27?0.23
C1————?1.00?0.62?0.04?0.38?1.05?0.54?0.050.03
C2————?1.08?0.70?0.09?0.54?1.14?0.70?0.07?0.02
C3————?1.07?0.73?0.44?0.55?1.14?0.77?0.27?0.10
C4————?0.93?1.45?1.13?0.47?0.94?0.90?0.45?0.20
C5————?0.24?0.06?0.19?0.60?0.26?0.180.08?0.01
C6————?0.200.07?0.34?0.78?0.25?0.140.07?0.07
C7————?0.17?0.06?0.65?0.80?0.26?0.24?0.10?0.16
C8————?0.18?0.47?0.76?0.68?0.28?0.37?0.28?0.25
C9————?0.120.03?0.34?0.23?0.11?0.050.100.11
C10————?0.10?0.01?0.41?0.54?0.10?0.070.090.07
C11————?0.09?0.27?0.42?0.69?0.10?0.17?0.02?0.05
C12————?0.11?0.35?0.38?0.61?0.11?0.22?0.17?0.20
A1?0.69?0.45?0.02?0.26————?1.01?0.65?0.04?0.23
A2?0.87?0.59?0.09?0.46————?1.09?0.74?0.07?0.40
A3?0.87?0.64?0.40?0.49————?1.07?0.80?0.33?0.45
A4?0.50?1.38?1.22?0.67————?0.61?0.76?1.42?0.71
A5?0.13?0.10?0.19?0.51————?0.22?0.11?0.04?0.41
A6?0.110.09?0.29?0.71————?0.18?0.10?0.13?0.60
A7?0.11?0.12?0.57?0.72————?0.13?0.19?0.47?0.62
A8?0.06?0.57?0.89?0.86————?0.08?0.34?0.91?0.86
A9?0.060.02?0.28?0.20————?0.08?0.04?0.26?0.17
A10?0.050.05?0.33?0.46————?0.06?0.05?0.34?0.41
A11?0.06?0.18?0.35?0.58————?0.05?0.12?0.35?0.53
A12?0.07?0.31?0.49?0.86————?0.06?0.22?0.51?0.88
表 4  屋盖分区的平均风压系数参考值
图 9  极值风压系数分布
图 10  极值风压的屋盖分区
图 11  极值风压系数的分区值
分区R1工况R2工况R3工况
CpmaxCpminCpmaxCpminCpmaxCpmin
B1——0.7?5.20.7?5.1
B2——0.5?3.80.7?3.8
B3——0.6?2.50.6?2.5
B6——0.9?2.50.6?2.1
B7——0.7?2.31.0?2.5
C1——0.7?3.20.4?3.3
C2——0.5?2.90.4?2.9
C3——0.7?2.60.5?2.5
C6——0.7?2.20.5?1.0
C7——0.7?2.30.5?1.0
A11.0?4.8——0.7?3.6
A20.8?3.7——0.7?3.1
A30.6?2.3——0.8?2.6
A60.6?2.2——0.6?2.2
A70.6?2.2——0.7?2.5
表 5  屋盖分区的极值风压系数参考值
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