铁路沿线太阳能电池板及支架立柱的抗风性能

以西成(西安—成都)高速铁路沿线立柱式太阳能电池板支架立柱的布设为背景,通过数值计算、风洞试验及有限元分析研究其抗风性能。为避免结构共振,须获得高速列车脉动风压的振动特性,通过刚性模型测力试验获取了结构最不利风偏角,试验结果可作为调整结构布设方向的依据。铁路沿线结构抗风设计须考虑自然风荷载和列车脉动风荷载的综合作用。本文提出了一种验算铁路沿线结构抗风安全性的方法:基于数值计算得到结构受列车风荷载作用下的极限风压,以此反算结构所受极限风荷载,并利用风洞试验及有限元计算方法计算结构应力。

Wind-resistant Performance of Solar Panels and Support Columns Along Railway

Based on the arrangement of solar panel and support columns along Xi'an-Chengdu high speed railway,the wind-resistant performance was studied by numerical calculation,wind tunnel test and finite element analysis.In order to avoid structural resonance,it is necessary to obtain the vibration characteristics of fluctuating wind pressure of high speed train.The most disadvantageous wind deflection angle of the structure was obtained through the force test of rigid model,and the test results can be used as the basis for adjusting the layout direction of the structure.The comprehensive action of natural wind load and train fluctuating wind load must be considered in the wind-resistant design of structures along the railway.A method for checking the wind-resistant safety of railway structures was proposed in this paper.The ultimate wind pressure of the structure under the action of train wind load is obtained based on numerical calculation,the ultimate wind load of the structure is calculated inversely by this method,and the wind tunnel test and finite element calculation method are used to calculate the structural stress.