Comparison of surface wind pressures and overall wind loads on two types of dry coal sheds

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (8) : 226-233.

SHEN Guohui,HAN Kanghui,LI Yipeng,JIANG Yonghan

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Abstract

Wind tunnel test was employed to compare the wind pressure distribution and overall wind load of three-centered and bullet-type dry coal sheds. The distribution of shape coefficients of the two types of dry coal sheds under different wind direction was analyzed. Then the testing results were compared with those regulated in various specifications. The overall force coefficients on the two types of dry coal sheds under various wind azimuths were calculated and compared. The overall force coefficients of the middle part and both sides of the bullet-type dry coal shed were given. Studies show that the negative pressure on the windward side of the roof is relatively large when the wind direction is facing the wall, while the negative pressure on the middle and leeward sides is relatively small. The peak negative wind pressures of the two types of dry coal sheds appear near the top of sheds under inclined wind azimuth. When the wind direction is facing the side of the shed, the positive pressure regulated in the GB specification is less than the test values, and the negative pressure regulated in the AIJ and EN specification are greater than the test values. The shape coefficient changes sharply with the angle, therefore the expressions of segmented shape coefficient in the specifications are not reasonable. The fitting equation base on trigonometric function was thereby developed. The lift coefficients of the three-centered dry coal shed are smaller than those of the bullet-type shed with the same rise-span ratio, indicating that the overall averaged wind load of the three-centered shed is smaller than that of the bullet-type shed in the view of design.

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dry coal shed / wind tunnel test / shape coefficient / overall force coefficient / Arch structure

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SHEN Guohui,HAN Kanghui,LI Yipeng,JIANG Yonghan. Comparison of surface wind pressures and overall wind loads on two types of dry coal sheds[J]. Journal of Vibration and Shock, 2023, 42(8): 226-233

References

[1] GB 50009-2012. 建筑结构荷载规范[S]. 北京: 中国建筑工业出版社, 2012.
Load code for the design of building structures: GB 50009-2012[S]. Beijing: China Architecture and Building Press, 2012.
[2] DL 5022-2012. 火力发电厂土建结构设计技术规程[S]. 北京: 中国电力出版社, 2016.
DL 5022-2012. Technical code for the design of civil structure of fossil-fired power plant[S]. Beijing: China Electric Power Press, 2016.
[3] 叶孟洋, 顾明, 黄鹏. 大跨度干煤棚结构表面体型系数试验研究[J]. 结构工程师, 2007, 1:62-66.
Ye Mengyang, Gu Ming, Huang Peng. Wind tunnel experiment study on shape coefficient of large-span dry-coa1 sheds[J]. Structural Engineers,2007, 1:62-66.
[4] 刘世宇, 范振中. 干煤棚网壳风荷载体形系数取值的探讨[J]. 电力勘测设计, 2006, 4:65-68.
Li Shiyu, Fan Zhenzhong. The simulating testing of wind loading in wind tunnel in dry-coal shed latticed shell[J]. Electric Power Survey and Design, 2006, 4:65-68.
[5] 黄鹏, 兰志昆, 顾明. 干煤棚柱面网壳结构多参数风荷载试验研究[J]. 建筑结构, 2015,45(17):92-98+62.
Huang Peng, Lan Zhikun, Gu Ming. Multi-parameter experimental research of wind loads on cylindrical reticulated shell structures of dry-coal sheds[J]. Building Structure, 2015,45(17):92-98+62.
[6] 黄铭枫, 孙轩涛, 冯鹤, 等.基于风压谱和Hermite模型的大跨干煤棚风压场数值模拟研究[J].振动与冲击,2018,37(23):111-119.
Huang Mingfeng, Sun Xuantao, Feng He, et al. Numerical simulation of wind pressure Field of long-span lattice structures based on wind pressure spectra and Hermite model[J]. Journal of Vibration and Shock, 2018,37(23):111-119.
[7] 张金龙, 苏宁, 彭士涛, 等.双跨柱面干煤棚风荷载干扰效应研究[J]. 建筑结构, 2020,50(S2):201-208.
Zhang Jinlong, Su Ning, Peng Shitao, et al. Study on wind load interference effects of the double-span cylindrical dry coal shed[J]. Building Structure, 2020, 50(S2):201-208.
[8] 苏宁, 彭士涛, 洪宁宁. 山墙疏透率对并列布置双煤棚风荷载的影响[J]. 振动与冲击, 2021, 40(22):275-282.
Su ning, Peng Shitao, Hong Ningning. Effects of gable porosity on wind loads on parallel-arranged double coal sheds[J]. Journal of Vibration and Shock, 2021, 40(22):275-282.
[9] 王辉, 杜文风, 赵艳男, 等. 三心圆柱面煤棚风荷载分布规律的数值模拟研究[J]. 河南大学学报(自然科学版), 2020, 50(4):470-478.
Wang Hui, Du Wenfeng, Zhao Yannan, et al. Numerical simulation of wind load distribution law of three-core cylindrical coal shed[J]. Journal of Henan University (Natural Science), 2020, 50(4):470-478.
[10] 郑怡彤, 吴倩云, 贾娅娅, 等. 考虑周边建筑影响的大跨煤棚风荷载体型系数研究[J].工程力学, 2021, 38(S1):72-76.
Zheng Yitong, Wu Qianyun, Jia Yaya, et al. Study on shape factor of wind load of large-span coal shed considering the influence of surrounding buildings[J]. Engineering Mechanics, 2021, 38(S1):72-76.
[11] 冯鹤,黄铭枫,李强, 等.大跨干煤棚网壳风振时程分析和等效静风荷载研究[J].振动与冲击,2016,35(1):164-173.
Feng He, Huang Mingfeng, Li Qiang, et al. Wind-induced vibration time history analysis and equivalent static wind loads for long span lattice shells wind loads for long -span lattice shells[J]. Journal of Vibration and Shock, 2016,35(1):164-173.
[12] 黄铭枫, 叶何凯, 楼文娟, 等. 考虑风速风向分布的干煤棚结构风振疲劳分析[J]. 浙江大学学报(工学版), 2019,53(10):1916-1926.
Huang Mingfeng, Ye Hekai, Lou Wenjuan, et al. Wind-induced vibration and fatigue analysis of long span lattice structures considering distribution of wind speed and direction[J]. Journal of Zhejiang University (Engineering Science), 2019, 53(10):1916-1926.
[13] 周晅毅, 顾明, 米福生, 等. 干扰条件下煤棚结构风致干扰特性研究[J]. 振动工程学报, 2009, 22(6):652-658.
Zhou Xuanyi, Gu Ming, Mi Fusheng, et al. Interference effects on wind induced responses of dry coal sheds. Journal of Vibration Engineering, 2009, 22(6):652-658.
[14] 苏宁, 彭士涛, 孙瑛, 等. 大跨度煤棚主体结构设计风荷载的神经网络建模研究及应用[J]. 建筑结构学报, 2019,40(7):34-41.
Su Ning, Peng Shitao, Sun Ying, et al. Research and application on artificial neural network modeling of design wind load on large-span coal storage sheds[J]. Journal of Building Structures, 2019,40(7):34-41.
[15] EN 1991-1-4:2005, Eurocode l: Actions on structures - Part 1-4: general actions-wind actions[S]. Brussels: European Committee for Standardization, 2005.
[16] RLB-AIJ:2004, Recommendations for loads on buildings[S]. Tokyo: Architectural Institute of Japan, 2004.
[17] 宋昕. 汽车气动升力及其对直线行驶能力影响的研究[D]. 长沙：湖南大学, 2012.