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工程力学  2014 

组合索塔锚固区钢牛腿-塔壁作用机理分析

DOI: 10.6052/j.issn.1000-4750.2012.12.0954, PP. 197-202

Keywords: 组合桥梁,索塔锚固区,作用机理,钢锚梁,计算分析

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Abstract:

为揭示钢锚梁式组合索塔锚固区受力机理,基于连续弹性介质层法,推导了钢牛腿壁板-混凝土塔壁连接件作用剪力的理论计算式;通过三维弹簧元模拟焊钉连接件的作用,对实桥索塔锚固区进行混合元分析,验证了理论计算式的合理性。研究结果表明:由上节段钢锚梁累加竖向压力引起的钢壁板-塔壁连接件作用剪力在最底节段达到80kN;钢壁板上、下节段全连接时,与上、下节段全分离及三节段一联比较,底节段连接件作用较大集中剪力;各节段连接件作用剪力随钢壁板厚度、连接件抗剪刚度增加而增大。

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