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竖向荷载作用下多排抗剪连接件剪力分布的计算方法

, PP. 77-81

Keywords: 桥梁工程,抗剪连接件,有限元,剪力分布,理论分析

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Abstract:

针对抗剪连接件剪力分布的不均匀程度缺少理论分析的现状,利用弹性变形理论,推导了多排抗剪连接件在竖向荷载作用下相对滑移和剪力分布的理论计算公式,并与有限元计算结果进行了验证。结果表明,钢板端部固定可以改善连接件的受力状态,且钢、混凝土受力分布也较为均匀;多排抗剪连接件刚度和间距越大剪力分布越不均匀。得到了竖向荷载作用下多排抗剪连接件的工作机理为钢板竖向位移和荷载随深度递减,抗剪连接件剪力自上而下逐步发挥作用。且理论计算与有限元分析结果一致,表明该公式具有较好的准确性和便利性。

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