Constructing method for the filling out abutement of bridge

摘要

PURPOSE: A process for producing abutment back-filing drainage of bridge and a structure for the same are provided by minimizing earth pressure-resistance by water inflow generated behind of the abutment to extend public time of the bridge and to easily manage the bridge. CONSTITUTION: The process comprises steps of: building riverbank portions at both sides of the bridge; striking and inserting a steel H pile(50) into a support layer by a base pile to support the abutment(100); forming a cast for the drainage at the riverbank side and introducing a concrete to produce a base portion(10) provided with the abutment drainage(20); introducing the concrete to complete the abutment; forming stepwise filled portion on the base side to form a 'U' shaped precast water route drainage(30); and forming a hollowed pipe(40) at a position with reduced earth pressure-resistance on step portions of the drainage.