Development of Mechanical Construction Method of Road Deck Middle Slab of Double Deck Tunnel in Great Depth

대심도 복층터널 중간슬래브의 기계화 시공법 개발

Lee, Doo Sung;Kim, Young Jin;Kim, Tae Kyun;Kim, Chang Yeong

  • Received : 2018.11.20
  • Accepted : 2019.04.25
  • Published : 2019.06.01


It is critical for Korea to make effective use of limited space as it has dense population and high traffic volume compared to its terrestrial area. To resolve this issue, diverse types of underground structures have increasingly been applied so far, and one of the most representative structures is double-deck tunnel. The construction period of the middle slab in the double deck tunnel constructed at the great depth can be considered as an important part after the tunnel lining construction in the whole process. In order to minimize the construction period required for construction of the middle slab in the double deck tunnel, it was proposed a method of the precast intermediate slab. In this study, it is suggested a mechanical construction process with dedicated equipments developed to improve the safety and the workability of erection of the precast middle slab than the current construction method using the existing mobile crane.


PSC middle slab;Installation equipment;Double deck tunnel;Reducing construction period;Construction


Grant : 대심도 복층터널 설계 및 시공 기술개발

Supported by : 국토교통과학기술진흥원