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工程力学  2015 

梁轨纵向位移阻力系数双弹簧模型研究

DOI: 10.6052/j.issn.1000-4750.2014.04.0297, PP. 75-81

Keywords: 梁轨相互作用,加载历程,双弹簧模型,钢轨纵向附加力,梁轨相对位移

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Abstract:

对考虑加载历程的城市轨道交通桥梁梁轨非线性相互作用问题进行了研究。基于DT-2扣件位移阻力试验结果和分析,提出适用于加载历程的扣件“双弹簧模型”。采用该模型进行梁轨相互作用计算,并与传统线性叠加方法进行对比分析。结果表明:传统“线性叠加”法在钢轨拉压力计算上偏于保守,而在梁轨相对位移与墩顶纵向水平位移计算上偏于不安全。

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