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工程力学  2013 

粘钢加固钢筋混凝土箱型桥墩双向恢复力模型研究

DOI: 10.6052/j.issn.1000-4750.2012.07.0555

Keywords: 桥梁工程,钢筋混凝土箱型桥墩,粘钢加固,拟静力模型试验,双向恢复力模型

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Abstract:

考虑不同初始损伤程度、粘贴钢板厚度、轴压比和长细比等参数,设计制作了10个钢筋混凝土箱型截面桥墩缩尺模型,对其进行了粘钢加固后的双向拟静力试验。基于纤维截面的M-#x00424;关系计算了桥墩连续曲线式及三线式的双侧向力-墩顶位移骨架曲线,并理论结合试验数据给出了卸载刚度,结果表明理论计算的骨架曲线、滞回曲线与试验曲线较好的吻合,理论模型可以反映各重要参数对恢复力特性的影响,具有较好的通用性。最后基于理论模型进行了桥墩最大荷载及极限位移的影响参数分析。

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