关键词: 铁路工程, D便梁, 明挖现浇法, 营业线施工, 既有站场

Abstract: This paper presents a case history of constructing an underpass tunnel of Zhuzhou New Railway Station that crossing several active railway lines with high safety hazards. The open cut and cover method was selected from the comparison of different tunnel construction methods and from the site-specific conditions. Type D temporary beams were used to support the existing railway alignments and the temporary supporting structures were monitored. The sloped open excavation was protected by steel rakers on the concrete blocks to ensure the construction safety and quality. The construction methods used in the open cut and cover tunnel project is also summarized in the paper which can provide a reference for the similar construction projects in the future.

Key words: Railway Engineering, Type D Temporary Beam, Open Cut and Cover Method, Construction Near Active Railway, Existing Station