| 中央索面混凝土斜拉桥单箱五室超宽主梁的局部应力分析 |
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| 引用本文： | 曾勇,黄康,王茂强,谭红梅.中央索面混凝土斜拉桥单箱五室超宽主梁的局部应力分析[J].武汉水运工程学院学报,2012(4):683-686. |
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| 作者姓名： | 曾勇 黄康 王茂强 谭红梅 |
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| 作者单位： | [1]重庆交通大学桥梁结构工程重点实验室,重庆400074 [2]重庆交通大学土木建筑学院,重庆400074 [3]中交公路规划设计院有限公司,北京100088 |
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| 基金项目： | 重庆市教委科学技术研究项目（批准号：KJll0412,KJll0416）、重庆交通大学（桥梁）结构工程重点实验室开放基金项目（批准号：CQSI.BF-Y11-7）、国家自然科学基金项目（批准号：50908246）资助 |
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| 摘 要： | 西江大桥为主跨320m的双塔中央索面预应力混凝土斜拉桥,桥塔位于主梁的中间,主梁采用大悬臂单箱五室预应力混凝土主梁,该桥在结构特征和受力特点上具有一定的新颖性和复杂性.文中建立了塔-梁处的主梁的三维有限元模型,重点分析在主梁根部最大轴力作用下,塔梁相交处的主梁、斜拉索的第一个锚块、边/中纵隔板的局部应力分布特征.
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| 关 键 词： | 中央索面 斜拉桥 超宽主梁 局部应力 |
Local Stress Analysis on Wide Mono-box Girder with Five-cells of an Concrete Cable-stayed Bridge with Central Cable-plane |
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| Authors: | ZENG Yong ＇ HUANG Kang WANG Maoqiang TAN Hongmei |
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| Institution: | 1 2 (Key Laboratory of Bridge-Structure Engineering Ministry of Communications, Chongqing Jiaotong University, Chongqing 400074,China)1 (College of Civil and Architectural Engineering, Chongqing J iaotong University, Chongqing 400074,China)2 (China Highway Planning and Design Institute Co. I2TD. (HPDI) ,Beijing 100088,China) |
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| Abstract: | Xijiang bridge is a cable-stayed bridge with central cable-plane and wide box girder. Its pylon is located in the central of the main girder with long cantilever and five-room single box. Based on the three-dimensional finite element model of segmental girder located at the joint of pylon and girder, lo cal stress distribution of girder is analyzed under the largest axial force at the root of main girder, with emphasis on the first anchor block of cable and side/central mediastinal board. |
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| Keywords: | cable-plane eable-stayed bridge wide box girder local stress |
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