| 在役桁式组合拱桥承载力评估与加固方法研究 |
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| 引用本文： | 姚国文,陈勇.在役桁式组合拱桥承载力评估与加固方法研究[J].重庆交通大学学报(自然科学版),2012,31(Z1):696-699. |
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| 作者姓名： | 姚国文 陈勇 |
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| 作者单位： | 1. 重庆交通大学 山区桥梁与隧道工程国家重点实验室培育基地,中国重庆400074;重庆交通大学 土木建筑学院,中国重庆400074
2. 重庆交通大学 土木建筑学院,中国重庆,400074 |
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| 基金项目： | “973”计划前期研究专项项目 |
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| 摘 要： | 针对服役桁式组合拱桥进行病害检查与技术状况评估,采用静力、动力载荷试验检测桥梁的承载能力。荷载试验结果表明:桥梁结构的冲击效应显著,大大削弱了结构的承载能力,部分桥梁评估为危桥,需要对进行结构维修加固或降低荷载等级使用。针对桥梁典型病害提出了对应的维修加固方法,进一步提出了桁式组合拱桥设计与施工技术方面的改进建议。
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| 关 键 词： | 预应力混凝土桁式组合拱桥 承载力评估 荷载试验 维修加固方法 |
Evaluation of Load Capacity and Strengthening Methods for Deteriorating Trussed Combination Arch Bridges |
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| Yao Guowen
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Chen Yong.Evaluation of Load Capacity and Strengthening Methods for Deteriorating Trussed Combination Arch Bridges[J].Journal of Chongqing Jiaotong University,2012,31(Z1):696-699. |
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| Authors: | Yao Guowen Chen Yong |
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| Institution: | 1.State Key Laboratory Breeding Base of Mountain Bridge & Tunnel Engineering,Chongqing Jiaotong University,Chongqing 400074,China;2.School of Civil Engineering & Architecture,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | The disease inspection and condition assessment were performed.The static and dynamic loading tests show that the carrying-capacity decreases with enlarged dynamic response under living loads.Some of them are assessed in dangerous condition.They need to be retrofitted and strengthened in structures or degraded in load capacity.Then some retrofitting and strengthening methods were summarized.And some design and construction improvements were discussed to develop this type of bridge. |
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| Keywords: | prestressed concrete trussed combination arch bridge evaluation of load capacity loading test retrofitting and strengthening method |
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