下穿铁路箱涵的顶推施工

下穿磁莱铁路的顶推箱涵，是205国道新泰城区改线工程的关键性控制工程，通过广泛深入的调查研究，精心设计、科学监测、合理施工，在顶进施工过程中采用了一系列行之有效的措施，实现了顶进施工的安全可靠，保证了磁莱铁路交通的不中断运行。顶进完成后，各项指标均满足规范要求，为以后类似超浅覆土、超大跨径、管棚支护等情况下，下穿铁路顶进箱涵在施工、监控及应急处理措施等方面，提供了可供参考的第一手资料。

Incremental Launching Construction of Box Culvert Tunneling under Railway

The incremental launching of box culvert tunneling under Ci-Lai railway is the critical control engineering of the relocation project in Xintai urban area in 205 national road. Through broad indepth investigations and research, aborative design, scientific monitoring, reasonable construction, applying a series of effective measures in the process of incremental launching construction, the safety reliability of incremental launching construction is realized, ensuring the Ci-Lai railway traffic not to be interrupted. After completion of incremental launching, the various indexes all meet the requirements of standard, and providing first-hand data of the aspects of construction, monitoring and emergency treatment measures of incremental launching of box culvert tunneling under railway for reference in similar situation such as ultra-shallow covering soil, super long span, pipe shed support, and so on.