基于偏心风荷载分布模型的柔性支撑索分配系数研究

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (12) : 305-310.

论文

马文勇1, 2，柴晓兵1，赵怀宇1，马成成1

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A study on distribution coefficient of a flexible photovoltaic support cable based on an eccentric moment wind load distribution model

MA Wenyong1, 2, CHAI Xiaobing1, ZHAO Huaiyu1, MA Chengcheng1

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文章历史 +

摘要

为获得柔性太阳能光伏支架支撑索风荷载分配系数，通过刚性模型测压风洞试验获取光伏组件表面体型系数分布规律，基于偏心风荷载分布模型计算分配到支撑索的力。结果表明：小倾角光伏组件极值风荷载发生在0°、30°、150°或180°风向角，单排中间区域光伏组件风荷载较大；组件表面风荷载分布规律沿风向表现明显的梯度，且迎风端所受风荷载大于背风端；板长方向偏心距大于宽度方向，基于风荷载不均匀分布特性提出柔性支撑光伏组件偏心距风荷载分布模型，给出偏心距风荷载分布模型体型系数和偏心距取值建议，并提出了柔性光伏支架上、下支撑索风荷载分配系数取值建议，为柔性太阳能光伏支架抗风设计提供依据。

Abstract

To estimate the wind load distribution on a supporting cable for photovoltaic panel (PV), a series wind tunnel tests was carried out to obtain the wind pressure coefficients on PV module via rigid model pressure measurement.The rule of the wind load distribution was calculated with the consideration of the moment induced by nonuniform wind pressure distribution.The results show that the extreme wind loads on the PV module with small inclination occur at the angle of attack of 0°, 30°, 150° or 180°.The wind load on the PV module in the middle is larger than that on adjacent ones.The distribution of wind load on the module shows an obvious gradient along the wind, and the wind load on the windward side is larger than that on the leeward side.The eccentricity in the length direction of the PV module is greater than in the width direction.Based on the nonuniform wind pressure distribution, the wind load model with consideration of moment was proposed.The pressure coefficient and eccentricity of the proposed model were given.The wind load distribution coefficients of the upper and lower cables in cable supported photovoltaic panel were suggested.The proposed model and distribution coefficients can be used in designing in flexible supported solar photovoltaic panel.

导出引用

马文勇1, 2，柴晓兵1，赵怀宇1，马成成1. 基于偏心风荷载分布模型的柔性支撑索分配系数研究[J]. 振动与冲击, 2021, 40(12): 305-310

MA Wenyong1, 2, CHAI Xiaobing1, ZHAO Huaiyu1, MA Chengcheng1. A study on distribution coefficient of a flexible photovoltaic support cable based on an eccentric moment wind load distribution model[J]. Journal of Vibration and Shock, 2021, 40(12): 305-310

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