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大跨度V形刚构拱组合桥拱与梁的刚度研究

, PP. 97-102

Keywords: 桥梁工程,大跨度V形刚构拱组合桥,名义刚度,结构参数,拱梁刚度比

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Abstract:

首先提出了大跨度V形刚构拱组合桥名义刚度的概念,分析了结构参数对名义刚度的影响,推导出名义刚度理论公式。针对拱梁刚度比的选取及其对结构内力分配的影响进行讨论,分析其对结构内力的影响规律,并得出刚拱柔梁与柔拱刚梁的界定值,最后对已建桥梁名义刚度与拱梁刚度比进行了总结。研究表明,拱梁刚度比可以界定出刚性拱柔性梁和柔性拱刚性梁;连续刚构拱组合桥和V形刚构桥以及拱桥的名义刚度没有明显的区别,这也表明名义刚度可以反映结构的总体刚度。

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