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不同翼板形式组合梁受弯性能试验研究

Keywords: 桥梁工程,组合梁,试验研究,裂缝,有限元分析

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Abstract:

为研究不同翼板形式组合梁的受弯性能,完成了4根不同翼板形式钢-混凝土组合梁跨中两点对称加载试验,采用有限元方法对构件受力行为进行分析。研究结果表明预制板组合梁和叠合板组合梁在正弯矩作用下受力性能基本一致,但在负弯矩作用下两者受力性能差异显著;预制板组合梁在混凝土翼板开裂之后,裂缝宽度不能得到有效抑制,截面刚度迅速下降,较早地进入承载能力极限状态。

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