复杂条件下大跨度斜交框架顶进线路加固及顶进技术  

Reinforcement and Jacking Technology of Long-span Oblique Frame Jacking Line under Complex Conditions

作　　者：刘勇 LIU Yong(China Railway 12th Bureau Group Hainan Engineering Co.,Ltd.,Haikou 570100,China)

机构地区：[1]中铁十二局集团海南工程有限公司,海口570100

出　　处：《价值工程》2022年第13期113-115,共3页Value Engineering

摘　　要：本项目为下穿铁路的大跨度斜交框架顶进施工,且顶进框架两侧均紧邻既有涵洞,现场施工环境复杂,线路加固的施工技术难度高,铁路安全运营的压力非常大。通过采取安全可靠的D型施工便梁进行线路加固,且根据现场具体情况,设计了2阶段线路加固方案。并通过采取合理有效的基坑防护等安全措施,严格按安全规程进行现场顶进施工,顺利完成了本工程框架的顶进施工。This project is the jacking construction of the long-span oblique frame passing through the railway,and both sides of the jacking frame are adjacent to the existing culverts.The on-site construction environment is complex,the construction technology of line reinforcement is difficult,and the pressure of railway safe operation is very high.By adopting safe and reliable D-type construction beams for line reinforcement,and according to the specific conditions of the site,a 2-stage line reinforcement plan is designed.By taking reasonable and effective safety measures such as foundation pit protection,and strictly following the safety regulations,the on-site jacking construction was successfully completed.

关 键 词：大跨度框架 斜交 顶进法 D型施工便梁 分阶段线路加固 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]