500kV双回路输电耐张塔动力特性分析
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摘要
输电塔的结构动力特性对于其抗震、抗风性能有很大的影响。选取在实际工程中使用的500kV双回路输电耐张塔作为研究对象,采用SAP2000有限元分析软件,使用三维模型对输电塔结构进行动力特性分析,重点研究了杆件的刚度对输电塔模态的影响。分析表明,改变杆件刚度可以大大改善输电塔的动力特性。
The dynamic characteristic of transmission tower brings important effect on the aseismic and anti-wind performances of transmission tower.The towers of 500 kV transmission line were selected for studying the dynamic characteristic.The finite element software SAP2000 was used for the dynamical characteristics analysis of transmission tower.The effect of the rigidity of poleson the mode of the selected transmission tower was studied principally.It indicates that the dynamic characteristic of transmission tower can be improved greatly through ameliorating the rigidity of poles.
The dynamic characteristic of transmission tower brings important effect on the aseismic and anti-wind performances of transmission tower.The towers of 500 kV transmission line were selected for studying the dynamic characteristic.The finite element software SAP2000 was used for the dynamical characteristics analysis of transmission tower.The effect of the rigidity of poleson the mode of the selected transmission tower was studied principally.It indicates that the dynamic characteristic of transmission tower can be improved greatly through ameliorating the rigidity of poles.
引文
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[3]赵滇生,金三爱.有限元模型对输电塔架结构动力特性分析的影响[J].特种结构,2004,21(3):8-11.ZHAO Dian-sheng,JIN San-ai.Effect of finite element models for the dynamical characteristics analysis of transmission tower structure[J].Special Structures,2004,21(3):8-11.
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[5]李清华,杨靖波.特高压输电杆塔动力特性分析快速建模研究[J].电力建设,2006,27(5):5-7.LI Qing-hua,YANG Jing-bo.Study on rapid modeling of dynamiccharacteristic analysis for EHV transmission towers[J].Electric Power Construction,2006,27(5):5-7.
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