中文核心期刊
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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2011, Vol. 30 ›› Issue (5): 889-894.DOI: 10.3969/j.issn.1674-0696.2011.05.001

• •    下一篇

圆形钢筋混凝土桥墩抗震性能试验评估(Ⅰ): 试验设计及初步结果

李贵乾1，2，郑罡2，王军3   

  1. 1. 广西壮族自治区交通规划勘察设计研究院，广西南宁530011; 2. 招商局重庆交通科研设计院有限公司桥梁结构动力学国家重点实验室，重庆400067; 3. 重庆交通大学土木建筑学院，重庆400074
  • 修回日期:2011-05-31 出版日期:2011-10-15 发布日期:2015-01-22
  • 通讯作者: 13/06/2011
  • 作者简介:李贵乾(1984—)，男，广西桂林人，硕士，主要从事桥梁抗震设计研究。E-mail:lgqmancan@163.com。
  • 基金资助:
    交通运输部西部交通建设科技资助项目(200731882233);重庆市杰出青年科技基金资助项目(CSTC，2008BA6039)

Experimental Evaluation of the Seismic Performance of Circular Reinforced Concrete Bridge Columns ( Ⅰ) : Design and Result of the Experiment

LI Gui-qian1，2 ，ZHENG Gang2，WANG Jun3   

  1. 1. Guangxi Communications Planning Surveying and Designing Institute，Nanning 530011，Guangxi，China; 2. State Key Laboratory of Bridge Structural Dynamics，Chongqing Communications Research ＆ Design Institute， Chongqing 400067，China; 3. School of Civil Engineering ＆ Architecture，Chongqing Jiaotong University， Chongqing 400074，China
  • Revised:2011-05-31 Online:2011-10-15 Published:2015-01-22

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摘要： 根据现行《公路桥梁抗震设计细则》的基本要求，设计了三水平、四因素圆形钢筋混凝土桥墩拟静力正交弯曲 破坏试验，并以墩顶力－ 位移滞回曲线、墩顶总位移的弯曲变形、剪切变形和应变渗透变形分量及截面平均曲率为 主要测试对象，进行了相应的试验研究。结果表明: 各桥墩的弯曲损伤破坏过程相似; 纵筋率较低，轴压比较高的 桥墩存在一定的剪切机制作用; 纵筋直径较小的桥墩在纵筋发生断裂时能承受的循环加载次数较少; 墩底区域混 凝土振捣不密实对桥墩延性能力的发挥有不利影响。

关键词: 钢筋混凝土桥墩, 拟静力正交试验, 延性能力, 试验评估

Abstract: Based on the basic requirements of current“Guidelines for Seismic Design of Highway Bridges”，the orthogonal quasi-static test of four factors at three different levels for circular reinforced concrete bridge columns had been designed． In the test program，force-displacement hysteretic curve and flexural deformation，shear deformation，bond-slip deformation by strain penetration contribute to the top displacement and the average curvature of section were the main test objects． The test results showed that the progression of flexual damage for all bridge columns were similar; the columns with low longitudinal reinforcements ratio and high axial load were influenced by a certain shearing mechanism，and the columns with longitudinal steel in small diameter could bear fewer numbers of cyclic loading when longitudinal steels fracture; uncompacted concrete vibrating in bottom area of bridge columns exerted adverse influence on the ductility capacity of bridge columns．

Key words: r /c bridge columns, orthogonal pseudo-static test, ductility capacity, experimental evaluation

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