CONSTRUCTION METHOD OF PYLON USING PRECAST CONCRETE BEAM

摘要

A method for constructing a tower of a cable bridge by using a precast concrete transverse beam is provided to improve working efficiency by adopting the transverse beam as a precast concrete member and skipping installation of the transverse beam, to shorten the construction period, to enhance safety and quality, and to reduce the construction cost. A method for constructing a tower of a cable bridge by using a precast concrete transverse beam(20) comprises the steps of: forming a protrusion key(11) on a joint with the transverse beam, building a pair of tower column lower structures(10a) with an iron bar concrete structure to the same height with the protrusion key; lifting the transverse beam and placing to the protrusion key formed on the tower column lower structure; distributing steel concrete fabric of a tower column to connect the joint of the transverse beam with the steel concrete fabric of the transverse beam, and distributing vertical connecting iron bars to be connected with the vertical iron bars of the lower structure; pouring concrete to the upper surface of the lower structure and integrating the lower structure with the transverse beam; and constructing a pair of tower column upper structures(10b) at the upper side of both joints with the transverse beam.