LAUNCHING SYSTEM TO PUSH AN UPPER GIRDER IN A BRIDGE TO BE CONSTRUCTED THROUGH AN INCREMENTAL LAUNCHING METHOD BY INCLUDING A MOLDING PLACE

摘要

PURPOSE: A launching system is provided to launch by artificially adding launching force and to control a sliding state. CONSTITUTION: A side compression typed launching system comprises a pair of horizontal jack and more than one driving jacks. The horizontal jacks are located between an upper girder(70) and the sidewall of a launching abutment to give launching force to a crosswise direction of a bridge from the both sides of the upper girder. The driving jack gives launching force to the lengthwise direction of the bridge by connecting with the horizontal jacks. A sliding control unit comprises a pair of first blocks and a pair of second blocks to control the sliding state of the upper girder when the upper girder is launched through the launching system. The first blocks are formed in both ends of the launching abutment and the second blocks are installed in both sides of the upper girder. Thereby, the launching distance of the upper girder is increased by transferring sufficient force and the upper girder is launched in a rapid slope.