钢筋混凝土箱型墩抗震性能指标比较分析  

Comparative Analysis on seismic index for reinforced concrete box piers

作　　者：李嘉维 朱三凡 

机构地区：[1]阳光学院,福建福州350001 [2]厦门市建筑科学研究院集团股份有限公司,福建厦门361000

出　　处：《福建建设科技》2018年第2期53-56,共4页Fujian Construction Science & Technology

基　　金：福建省自然科学基金面上项目(2016J01231);福建省建设厅科技项目(2017-K-77);厦门市建设局科技项目(XJK2017-1-4)

摘　　要：通过钢筋混凝土箱型墩的双向拟静力试验研究和理论分析,对考虑水平双向作用的钢筋混凝土箱型墩梁桥的合理抗震性能指标进行比较研究。考虑了长细比、轴压比和体积配筋率,进行了14个钢筋混凝土箱型墩的双向拟静力试验,并对位移、曲率、能量以及Park-Ang等抗震性能指标进行比较分析,讨论了适用于钢筋混凝土箱型墩的合理性能指标。结果表明,考虑水平双向荷载作用的Park-Ang指标能够很好地描述钢筋混凝土箱型墩的各个损伤水平,适用于钢筋混凝土箱型墩桥梁的抗震设计。The reasonable seismic index of reinforced concrete box pier subjected bilateral seismic load was studied by bi-axial pseudo-static test and theoretical analysis.The slenderness ratio,axial-load ratio and reinforcement ratio including bi-axial pseudo-static test of14reinforced concrete box piers was introduced and the corresponding seismic performance index including displacement,curvature,energy as well as Park-Ang index was discussed.The result shows that Park-Ang index considering bilateral seismic effect can describe the damage level of the reinforced concrete box piers well and is suitable for seismic design of the bridge with this type of piers.

关 键 词：钢筋混凝土箱型墩 双向拟静力试验 性能指标 位移 Park-Ang指标 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] U443.22[交通运输工程—道路与铁道工程]