| PC箱梁桥受力开裂成因的数值分析 |
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| 引用本文： | 龙佩恒,陈惟珍,何雄君. PC箱梁桥受力开裂成因的数值分析[J]. 桥梁建设, 2006, 0(2): 77-80 |
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| 作者姓名： | 龙佩恒 陈惟珍 何雄君 |
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| 作者单位： | 1. 同济大学桥梁工程系,上海,200092;北京建筑工程学院土木工程系,北京,100044
2. 同济大学桥梁工程系,上海,200092 |
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| 摘 要： | 根据预应力混凝土桥梁的力学特性,提出了嵌入式空间预应力混凝土实体组合单元的概念。综合考虑预应力效应、徐变效应、温度荷载等影响因素,从桥梁空间应力状态的精细化分析着手,对东莞市石龙镇二桥的开裂成因及影响因素进行了研究,进而提出现阶段桥梁设计方法的改进建议。
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| 关 键 词： | 预应力混凝土桥 箱形梁 裂缝 有限元法 分析 |
| 文章编号： | 1003-4722(2006)02-0077-04 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 2005-08-10 |
Numerical Analysis of Crack Causes of Prestressed Concrete Box Girder Bridge under Loading |
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| LONG Pei-heng,CHEN Wei-zhen,HE Xiong-Jun. Numerical Analysis of Crack Causes of Prestressed Concrete Box Girder Bridge under Loading[J]. Bridge Construction, 2006, 0(2): 77-80 |
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| Authors: | LONG Pei-heng CHEN Wei-zhen HE Xiong-Jun |
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| Affiliation: | 1. Department of Bridge Engineering, Tongji University, Shanghai 200092, China; 2. Department of Civil Engineering, Beijing Institute of Architectural Engineering, Beijing 100044, China |
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| Abstract: | In accordance with the mechanical behavior of prestressed concrete(PC) bridge,the concept of embedded spatial solid composite element of prestressed concrete is put forward.In consideration of influential factors,such as prestressing effect,creep effect and temperature load in a comprehensive way,and proceeding from refine analysis of bridge spatial stress conditions,the causes and influential factors leading to the cracks in the 2nd Shilong Town Bridge are studied,and proposal for improving design methods for the current PC bridges is made. |
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| Keywords: | prestressed concrete bridge box girder crack finite element method analysis |
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