| 武宣县黔江特大桥关键施工阶段内力分析 |
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| 引用本文： | 张黎明,;王建会,;王红伟.武宣县黔江特大桥关键施工阶段内力分析[J].西部交通科技,2014(6):79-82. |
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| 作者姓名： | 张黎明 ;王建会 ;王红伟 |
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| 作者单位： | [1]广西壮族自治区交通规划勘察设计研究院,广西南宁530029; [2]广西大学,广西南宁530004 |
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| 摘 要： | 武宣县黔江特大桥主桥采用预应力混凝土连续刚构结构,文章综合考虑各种荷载情况,建立全桥有限元模型对该桥主桥三个关键施工阶段(最大悬臂状态、边跨合拢状态、中跨合拢状态)的内力进行了全面分析,得到了结构体系约束不断增加,墩顶最大弯矩向中跨及边跨迁移的规律,可为预应力混凝土连续刚构桥的设计及施工控制提供参考和借鉴。
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| 关 键 词： | 连续刚构桥 施工阶段 内力分析 有限元模型 |
Internal Force Analysis of Qianjiang Bridge in Wuxuan County at Critical Construction Phase |
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| Institution: | ZHANG Li-ming ,WANG Jian-hui ,WANG Hong-wei (1. Guangxi Communication Planning Surveying and Designing Institute, Nanning, Guangxi, 530029; 2 Guangxi University, Nanning, Guangxi, 530004) |
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| Abstract: | Main bridge of Qianjiang Bridge in Wuxuan County used the prestressed concrete continuous rigid frame structure,this article by comprehensively considering all loading conditions established the full-bridge finite element model and conducted a comprehensive analysis on the internal force of main bridge of this bridge at three key construction stages（maximum cantilever state,side-span closure state,mid-span closure state）,and obtained the rules that the maximum bending moment of pier top migrates to the mid-span and side spans when the structure system constraints increasing,thereby providing the reference for the design and construction control of prestressed concrete continuous rigid frame bridges. |
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| Keywords: | Continuous rigid frame bridge Construction phase Internal force analysis Finite element model |
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