CONSTRUCTION METHOD FOR DUCT STRUCTURE IN TUNNEL

摘要

PURPOSE: A construction method for an air duct structure in a tunnel is provided to improve quality and to reduce construction time by simplifying construction. CONSTITUTION: A construction method for an air duct structure in a tunnel is as follows. A bottom slab(10) is formed. Walls(20) are formed in both edges and in the center of the bottom slab. Arch parts(30) are formed on the top end of the walls to form the top of a pair of tunnels. PC member hanging protrusions are formed on the inner top of the arch parts in a longitudinal direction. A PC member(100) is installed in the PC member hanging protrusions. A top slab(40) is formed on the top of the PC member by using concrete.