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CFRP拉索的非线性参数振动特性

, PP. 52-57

Keywords: 桥梁工程,CFRP拉索,数值方法,参数振动,斜拉桥,振动模型

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Abstract:

？建立了CFRP拉索的非线性参数振动模型,该模型考虑了拉索同时受梁端和塔端激励的状况,并考虑了索的垂度、大位移等引起的几何非线性;利用该模型,对相同条件下的CFRP拉索和钢拉索,采用数值方法分析了频率匹配比、拉索静拉力、激励幅值以及阻尼等因素对拉索参数振动特性的影响。研究结果表明,拉索振动的拍频、幅值与上述因素均有关,且CFRP拉索在参数振动发生几率、参数振动响应等方面优于钢拉索。

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