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波纹钢腹板组合箱梁的抗剪受力性能

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Keywords: 桥梁工程,波纹钢腹板,试验研究,抗剪受力性能,参数分析,回归分析

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Abstract:

?以某跨径为40m的波纹钢腹板预应力组合梁桥为原型,根据相似理论设计制作了缩尺模型试验梁。通过测试模型梁在静力荷载作用下的挠度和应变,研究了该桥型的抗剪受力性能。采用有限元方法研究了波纹钢腹板的整体尺寸、波纹板厚度、波折角度、波纹板高度和平板宽度等对波纹钢腹板构件非线性剪切屈曲性能的影响。另外,对Hamilton所做的波纹钢腹板剪切屈曲试验结果进行了回归分析,给出了波纹钢腹板局部屈曲强度的半经验半理论计算公式。结果表明:混凝土顶板和底板承担了大部分弯矩,波纹钢腹板主要承担剪力,且剪力沿波纹板高度方向均匀分布。

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