A method of constrution method for tunnel of structure pipe

摘要

PURPOSE: A drying method of a tubular tunnel is provided to promote the convenience on works, to shorten a period of construction, to reduce construction expenses, and to construct a tunnel firmly. CONSTITUTION: The drying method of a tubular tunnel comprises the steps of: fastening and press-fitting steel pipes to a loop of a tunnel(100) in a vertical pit formed from the surface to a construction site of a tunnel(100); installing upper girders along the steel pipes at regular intervals; press-fitting outer piles(31) along both steel pipes at regular intervals; press-fitting inner piles(32) along the steel pipes adjacent to both steel pipes at regular intervals; press-fitting support piles along central steel pipes at regular intervals; constructing a slab(30) by placing/hardening concrete in the steel pipes; building up a side wall(40) by excavating between the outer piles(31) and the inner piles(32) under the tunnel(100) and placing reinforced concrete using lagging as a form; forming a lower girder(50) by excavating the inside of the tunnel(100), then placing reinforced concrete on the bottom of the tunnel(100); and forming a column by placing reinforced concrete to bury the support pile.