METHOD FOR CONSTRUCTING AN EXTENDABLE CABLE-STAYED GIRDER BRIDGE HAVING A SINGLE SPAN

摘要

Provided is a method for constructing an extendable cable-stayed girder bridge having a single span. In the cable-stayed girder bridge having the single span in which a girder is hung between both main towers (a main span) using a stayed cable, a construction process for converting a compression force applied to the girder to an elongation force is performed to more economically construct the cable-stayed girder bridge. According to the construction process, deck segments hung at a central portion of the main span by the stayed cable and affected by the compression force are rigidly coupled and connected to each other using key segments and jacks, and then the compression force is offset by a tensile force generated between the deck segments connected to each other while the jacks are removed.