摘要
以国内顶升工程中最大跨径连续梁桥——跨航道同三国道横潦泾大桥改造工程为对象,在详细介绍整个顶升施工方案的基础上,对桥墩在施工过程中不同阶段的受力特性进行了详细描述。尤其对主墩切割期间的不利受力特点进行了分析,并对相关施工方案提出了修改建议,从而确保顶升施工安全。
Taking Tongsan National Highway Hengliaojing Bridge(across the channel the largest span continuous girder bridge in the field of jacking engineering in China) reconstruction project for example,different stress characters of the pier during different construction period are introduced in detail on the basis of the whole jacking plan.Especially,the adverse stress character is analyzed during the main pier's cutting period.Meanwhile,some suggestions are provided for the related construction plan for keeping the safety of jacking construction.
出处
《中国市政工程》
2011年第2期75-77,94,共3页
China Municipal Engineering
关键词
大跨径连续梁桥
顶升
切割
施工阶段
large-span continuous girder bridge
jacking
cutting
construction
