摘要
双曲拱桥具有施工简单、跨越能力较大、造价低廉等优点,在20世纪六七十年代被我国广泛采用,但随着公路交通荷载的增加,双曲拱桥普遍存在设计荷载等级低、病害较多等问题。在分析北京市双曲拱桥常见病害及其加固方法的基础上,通过研究北京市双曲拱桥大修情况,采用桥梁博士对增大截面法和粘贴钢板法2种加固方法进行了案例分析,提出了合理的加固改造建议,对提高或恢复双曲拱桥承载能力、消除交通隐患具有重要意义。
Because of the advantages of simple construction,large spanning and low cost,two-way curved arch bridges have been widely used in China in 1960s and 1970s.However,with the increase of highway traffic load,there are many problems in two-way curved arch bridges,such as low design load level and more diseases.Based on the analysis of common diseases and reinforcement methods,a two-way curved arch bridge in Beijing is studied and analyzed by increasing section method and sticking steel plate method by bridge doctor.Reasonable reinforcement and transformation suggestions are put forward.It is important for improving or restoring the bearing capacity of twoway curved arch bridges and eliminating hidden traffic dangers.
作者
宋健
Song Jian(Beijing Municipal Bridge Maintenance Management Group Co.,Ltd.,Beijing 100097,China)
出处
《市政技术》
2022年第6期35-39,51,共6页
Journal of Municipal Technology
关键词
双曲拱桥
典型病害
主拱肋加固
增大截面法
粘贴钢板法
two-way curved arch bridge
typical disease
reinforcement of main arch rib
increasing section method
sticking steel plate method
