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| 大跨度上承式钢管混凝土拱桥的稳定性分析 | |
| 引用本文： | 赵河清,徐亮,杨惠林,刘世忠.大跨度上承式钢管混凝土拱桥的稳定性分析[J].公路交通科技,2006,23(11):82-85. |
| 作者姓名： | 赵河清 徐亮 杨惠林 刘世忠 |
| 作者单位： | 1. 甘肃省公路局,甘肃,兰州,730000 2. 西北民族大学,土木学院,甘肃,兰州,730030 3. 甘肃省交通局,甘肃,兰州,730000 4. 兰州交通大学,土木工程学院,甘肃,兰州,730070 |
| 基金项目： | 国家自然科学基金资助项目(503780436) |
| 摘 要： | 随着钢管混凝土这种组合材料应用于工程实践,拱桥的跨越能力取得了长足的发展,对于跨度大,宽跨比小的上承式钢管混凝土拱桥,失稳破坏是结构破坏的形式之一,具有破坏突然、征兆不明显的特点,其危害性比强度破坏更大、更隐蔽。以甘肃在建的主跨180 m,宽跨比为1/25.7的上承式钢管混凝土拱桥为例,建立了全桥施工过程全三维有限元模型,详细分析了该桥成桥状态和施工过程中的横向稳定性,讨论了拱上结构以及桥面系边界条件的处理,分析了其对结构整体计算结果的影响。 |
| 关 键 词： | 钢管混凝土 拱桥 横向稳定性 板式橡胶支座 |
| 文章编号： | 1002-0268(2006)11-0082-04 |
| 收稿时间： | 2005-06-22 |
| 修稿时间： | 2005年6月22日 |
Stability Analysis of Long-span Deck-type CFST Arch Bridge |
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| ZHAO He-qing,XU Liang,YANG Hui-lin,LIU Shi-zhong.Stability Analysis of Long-span Deck-type CFST Arch Bridge[J].Journal of Highway and Transportation Research and Development,2006,23(11):82-85. | |
| Authors: | ZHAO He-qing XU Liang YANG Hui-lin LIU Shi-zhong |
| Institution: | 1.Highway Bureau of Gamu Province, Gansu Lanzhou 730000, China; 2.Department of Civil Engineering, Northwest Universtity for Nationalities, Gamu Lanzhou 730030, China; 3. Office of Commtmicatiom of Gansu Province, Gamu Lanzhou 730000, China; 4. Department of Civil Engineering, Lanzhou Jiaotong University, Gamu Lanzhou 730070, China |
| Abstract: | With the application of the concrete-filled-steel tube(CFST) in civil engineering,which is a composition material,the(crossing) ability of arch bridge get advanced development.For long-span and small width-span ratio arch bridge,the unstability collapse is one of structure damage forms,this kind of damage happens abruptly without obvious premonitory symptom.Transverse stability of a deck type CFST arch-bridge in Gansu province,with main span of 180 meters,width-span ratio of 1/20.7 is studied,by using three-(dimension) finite element models of the bridge,and the transverse stability of the bridge during the process of construction and the statues of the completed bridge are analyzed respectively,taking into consideration of the influence of the spandrel arch,and deck elastic(restraints.) |
| Keywords: | concrete-filled-steel tube arch bridge transverse stability plate rubber bearing |
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