| 覆土波纹钢板拱桥施工过程的受力分析 |
| |
| 引用本文： | 刘保东,尹航,王元丰,王全录.覆土波纹钢板拱桥施工过程的受力分析[J].公路交通科技,2010,27(1). |
| |
| 作者姓名： | 刘保东 尹航 王元丰 王全录 |
| |
| 作者单位： | 1. 北京交通大学,土木建筑工程学院,北京,100044
2. 内蒙古自治区交通设计研究院有限责任公司,内蒙古,呼和浩特,010010 |
| |
| 基金项目： | 国家自然科学基金资助项目(50878016);;交通部西部交通建设科技资助项目(200631877245) |
| |
| 摘 要： | 基于一座实际的覆土波纹钢板拱桥,利用有限元方法建立了三维空间受力分析模型,采用现行公路规范的方法计算了不同覆土施工阶段的土压力荷载,对该桥覆土的施工过程进行了模拟,计算分析了覆土回填过程中关键截面变形和内力的变化规律。计算和分析结果表明,波纹钢板拱桥的各关键截面变形和内力随覆土回填过程发生较大变化,覆土初期拱两侧受到填土压力的挤压而下挠,同时拱顶处出现了反拱现象,且随覆土高度的增加拱顶处反拱逐渐增大,各截面的应力也均逐渐增大;覆土回填至拱顶之后,随覆土高度的增加拱顶处的反拱逐渐减小,同时拱顶拉应力也明显减小,整个拱圈趋于受压状态。因此,施工中应严格分层对称回填、压实,并应特别注意覆土回填至拱顶附近时结构的位移和应力变化。
|
| 关 键 词： | 桥梁工程 受力性能 有限元分析 覆土波纹钢板拱桥 回填过程 |
Mechanical Analysis of Buried Corrugated Steel Arch Bridge during Construction |
| |
| LIU Baodong,YIN Hang,WANG Yuanfeng,WANG Quanlu.Mechanical Analysis of Buried Corrugated Steel Arch Bridge during Construction[J].Journal of Highway and Transportation Research and Development,2010,27(1). |
| |
| Authors: | LIU Baodong YIN Hang WANG Yuanfeng WANG Quanlu |
| |
| Institution: | 1.School of Civil Engineering;Beijing Jiaotong University;Beijing 100044;China;2.Inner Mongolia Communications Design and Research Institute Co.;Ltd.;Huhhot;Inner Mongolia 010010;China |
| |
| Abstract: | Based on a real buried corrugated steel arch bridge,a 3D finite element model for mechanical analysis was established.The earth pressures during various backfilling stages was calcutated and the process of the backfilling construction was simulated according to the current highway specification.The variation rules of stresses and deformations of the key sections of the arch ring during backfilling were calculated and analysed.The result shows that(1) The stresses and deformations of the key sections vary si... |
| |
| Keywords: | bridge engineering mechanical behavior finite element analysis buried corrugated steel arch bridge backfilling process |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
