摘要
针对9×20 m钢筋混凝土S形连续弯箱梁桥在使用过程中梁体发生较大的横向位移以及桥墩(独柱墩)存在倾斜开裂的现象,通过理论分析及跟踪观测,探讨了产生该病害的原因。采取了将4#墩改造成墙式薄壁固结墩、更换支座和5#墩套箍加固等一系列措施,对该桥进行了维修改造,经后续使用和观测,达到了预期加固和处治效果。
Focused on the condition of larger lateral displacement of girder, tilt and crack of pier during the period of using a 9×20 m reinforced concrete S-formed continuous curved box girder bridge. Through the theoretical analysis and tracking observation, discussed the course of the diseases. Adopted the measures of transforming 4# pier into thin wall typed consolidated pier, changing bracing, hooping reinforcement of 5# pier. After the design and construction project of maintenance and reformation, the reformation design is feasible, the expected goal and good effect are achieved.
作者
韩昀
虞建成
李后川
Han Yun YuJiancheng L(Jiangsu Guang-Jing-Xi-Cheng Expressway Co., Ltd., Nanjing 210000, China Southeast University, Nanjing 210096, China)
出处
《现代交通技术》
2017年第2期46-49,共4页
Modern Transportation Technology
关键词
弯箱梁桥
桥梁加固
侧向位移
病害处治
curved box girder bridge
bridge reinforcement lateral displacement
diseases management