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| 斜拉桥拉索区主梁加固设计 | |
| 引用本文： | 周兴林,魏密,谢旭飞,杨转运.斜拉桥拉索区主梁加固设计[J].交通科技与经济,2009,11(4):77-79. |
| 作者姓名： | 周兴林 魏密 谢旭飞 杨转运 |
| 作者单位： | 1. 武汉科技大学,湖北,武汉,430081 2. 广西壮族自治区交通厅,广西,南宁,530012 3. 江苏省交通科学研究院,江苏,南京,210017 4. 四川建筑职业技术学院,四川,德阳,618000 |
| 摘 要： | 由于设计时梁体的底板结构过薄，安装应力设计不足导致主梁在15～17号块接缝在施工后续节段时主梁底板和腹板压渍。结合悬臂施工的斜拉桥施工事故处理的工程实例，通过加固方案比选，确定采用在底板与直腹板和底板与斜腹板的隅角处采用外包钢筋混凝土的劲性骨架小纵梁加固方案，实践结果表明采用的加固措施成功解决加固结构与原有结构的结合难题，不损伤原有结构、改善原有结构的受力状态是加固设计的关键。 |
| 关 键 词： | 斜拉桥 底板压溃 小纵梁加固 腹板加固 |
Strengthening Design of the Main Girder in the Cable Zone of a Cable-Stayed Bridge |
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| ZHOU Xing-lin,WEI Mi,XIE Xu-fei,YANG Zhuan-yun.Strengthening Design of the Main Girder in the Cable Zone of a Cable-Stayed Bridge[J].Technology & Economy in Areas of Communications,2009,11(4):77-79. | |
| Authors: | ZHOU Xing-lin WEI Mi XIE Xu-fei YANG Zhuan-yun |
| Institution: | 1.Wuhan University of Science & Technology;Wuhan 430081;China;2.Guangxi Zhuang Autonomous Region transport department Guangxi Nanning 530012;3.Jiangsu Transportation Research Institute;Nanjin 210017;4. Sichuan College of Architecture Technology;Deyang 618000;Sichuan;China |
| Abstract: | Owing to the thinness of the designed bottom board structure of the beam body and the insufficiency of the designed erection stress,the bottom board and the web of the main girder crushed at the joints between No. 15 and No. 17 blocks in the later stage of the construction. Considering the engineering examples of the treatment of construction accident of the cantilever-constructed cable-stayed bridge,a strengthening scheme is determined after comparison and selection that uses small stiff framework longitud... |
| Keywords: | cable-stayed bridge bottom board crushing small longitudinal beam strengthening web strengthening |
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