The fluctuation of wind load on large-span lattice structures are complicated,usually need to be determined by wind tunnel tests.A new numerical simulation method for wind pressure fields of long-span lattice structures is proposed based on empirical wind pressure spectra and Hermite translation model.The proposed method is able to simulate the non-Gaussian wind pressure fields efficiently.The error control mechanism is carefully designed in the simulation method to effectively refine the simulation results with a calibration to the target non-Gaussian characteristics during the simulation process.The empirical wind pressure spectra are determined from the wind tunnel test results.Finally,the effectiveness and accuracy of the proposed method were demonstrated by comparing the numerical results of non-Gaussian wind pressure to the wind tunnel results both in time and frequency domains.
黄铭枫1，孙轩涛1，冯鹤1，楼文娟1，胡德军2. 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 Mingfeng1， SUN Xuantao1， FENG He1， LOU Wenjuan1， HU Dejun2. Numerical simulation of wind pressure Field of long-span lattice structures based on wind pressure spectra and Hermite model. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(23): 111-119.
[1] 叶继红, 侯信真. 大跨屋盖脉动风压的非高斯特性研究[J]. 振动与冲击,2010,29(07):9-15+232.
Ye JH, Hou XZ. Study on Non - Gaussian Properties of Fluctuating Wind Pressure in Large Span Roof. Journal of Vibration and Shock, 2010, 29(07): 9-15+232.
[2] Huang MF, Chan CM, Lou WJ, Bao S. Time-domain Dynamic Drift Optimization of Tall Buildings Subject to Stochastic Wind Excitation. Structure and Infrastructure Engineering, 2015, 11(2): 97–111.
[3] 李锦华, 李春祥, 申建红. 非高斯脉动风压的模拟研究[J]. 振动与冲击,2009,28(09):5-8+210.
Li JH, Li CX, Shen JH. Simulation Study on Non - Gaussian Fluctuating Wind Pressure. Journal of Vibration and Shock, 2009, 28(09): 5-8+210.
[4] 孙瑛, 许楠, 武岳. 考虑特征湍流影响的体育场悬挑屋盖脉动风压谱模型[J]. 建筑结构学报, 2010, 31(10):24-33.
Sun Y, Xu N, Wu Y. Spectra model of fluctuating wind pressure on grand stand roofs with consideration of signature turbulence. Journal of Building Structures, 2010, 31(10): 24-33.
[5] 罗尧治, 蔡朋程, 孙斌, 童若飞, 沈雁彬, 王洽亲. 国家体育场大跨度屋盖结构风场实测研究[J]. 振动与冲击, 2012, 31(03): 64-68+78.
Luo YZ, Cai PC, Sun B, et al. Field measurement of wind characteristics on roof of the national stadium. Journal of Vibration and Shock, 2012, 31(03): 64-68+78.
[6] Kumar KS. Simulation of Fluctuating Wind Pressures on Low Building Roofs [D]. Concordia University, 1997.
[7] 孙瑛. 大跨屋盖结构风荷载特性研究[D].哈尔滨工业大学,2007.
[8] Su N, Sun Y, Wu Y, et al. three-parameter auto-spectral model of wind pressure for wind-induced response analysis on large-span roofs[J]. Journal of Wind Engineering & Industrial Aerodynamics, 2016, 158:139-153.
[9] 苏宁, 孙瑛, 杨林,等. 基于广义回归神经网络的大跨度球面屋盖风荷载预测及其应用[J]. 建筑结构学报, 2016, 37(6):101-106.
Su N, Sun Y, Yang L, et al. Wind load prediction of large-span domes based on generalized regression neural network and its application. Journal of Building Structures, 2016, 37(6): 101-106.
[10] 李璟, 韩大建. 大跨度屋盖结构非高斯风压场的一种模拟方法[J]. 工程力学, 2009, 05: 80-87.
Li J, Han DJ. A simulation method for non-gaussian wind pressure field of large-span roof structures. Engineering Mechanics, 2009, 05: 80-87.
[11] Win T Erstein S R. Nonlinear vibration models for extremes and fatigue[J]. Journal of Engineering Mechanics. 1988, 114(10): 1772-1790.
[12] Gurley KR, Tognarelli MA, Kareem A. Analysis and Simulation Tools for Wind Engineering. Probabilistic Engineering Mechanics[J], 1997,12(1): 9-31.
[13] Masters F, Gurley KR. Non-Gaussian Simulation: Cumulative Distribution Function Map-Based Spectral Correction[J]. Journal of Engineering Mechanics-ASCE, 2003,129(12):1418-1428.
[14] 徐飞, 李传日, 姜同敏, 荣双龙. 非高斯随机振动的模拟方法[J]. 北京航空航天大学学报, 2014, (09): 1239-1244.
Xu F, Li CR, Jiang TM, Rong SL. Simulation of non-Gaussian random vibration. Journal of Beijing University of Aeronautics and Astronautics. 2014, (09): 1239-1244.
[15] Huang MF, Lou W, Pan X, et al. Hermite Extreme Value Estimation of Non-Gaussian Wind Load Process on a Long-Span Roof Structure[J]. Journal of Structural Engineering, 2014, 140(9):04014061.
[16] Deodatis G, Micaletti R C. Simulation of Highly Skewed Non-Gaussian Stochastic Processes[J]. Journal of Engineering Mechanics-ASCE, 2001, 127(12): 1284-1295.
[17] 罗俊杰, 苏成, 韩大建. 高斯/非高斯混合随机风压场的模拟方法[J]. 振动与冲击, 2012, (10): 111-117.
Luo JJ, Su C, Han DJ. Simulation methodology for stochastic wind pressure field composed of gaussian and non-gaussian regions Journal of Vibration and Shock, 2012, (10): 111-117.
[18] 邵帅. 弧形平面体育场悬挑屋盖风荷载特性及干扰效应研究[D].哈尔滨工业大学,2013.
