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| The Alignment Control Analysis of Cantilever Construction for Continuous Rigid Frame Bridge |
| WU Fang-wen, XUE Cheng-feng, ZHAO Lei |
| Southwest Jiao Tong University, Chengdu, Sichuan 610031, China |
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Abstract Research purposes: Based on the theory calculation and the analysis of bridge, the paper studied the control system of continuous rigid frame bridge. The factors that affect the alignment of cantilever construction are analyzed. It adopts survey datum to modify model parameters to control the alignment of deck well.
Research methods: Based on the theory of construction control, with reference to the characteristic of the 3rd bridge over Fujiang River, construction control model is established by the software of finite element analyses. The construction quality is ensured by the survey datum and the results of theory calculation.
Research results: The closures of bridge are all finished naturally, and the closure errors are in the criterion value 2cm. The deck alignment of completed stage is so smooth that it matches with the design alignment well.
Research conclusions: Many influences factors are to be considered in construction stages, and using the survey datum to modify model parameters, as a result, it can achieve a good alignment to match the design alignment.
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Received: 21 October 2005
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| [3] |
陈树礼,苏目标,张文学.混凝土连续梁桥施工阶段应力监测研究[J].石家庄铁道学院学报,2004,17(4),38-41.
|
| [4] |
范立础.预应力混凝土连续梁桥[M].北京:人民交通出版社,1999.
|
| [6] |
李庆华.材料力学[M].成都:西南交通大学出版社,1994.
|
| [7] |
JTG D62-2004,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].
|
| [1] |
徐君兰.大跨度桥梁施工控制[M].北京:人民交通出版社,2000.
|
| [2] |
向木生,刘志雄,等.大跨度预应力混凝土桥梁监测监控技术研究[J].公路交通科技,2002,19(4):52-56.
|
| [5] |
雷俊卿.桥梁悬臂施工与设计[M].北京:人民交通出版社,1999.
|
|
|
|
2006, Vol. 23 
