Key Technology of Strengthening Construction of Dangerous Bridge by Changing Structure System
Prestressed concrete T-type rigid frame bridge with suspended beams is one of the main types of long-span girder bridges built in China from the 1970s to the 1990s.In view of this,a new method of strengthening endangered bridges by system conversion is proposed,which replaces the former cantilever T-type bridge with continuous rigid structure consolidation after demolition.There is no experience reference for this scheme at present.Taking the reconstruction project of endangered old bridges of Jinjiang Bridge of G106 Line as an example,this paper introduces a key technology of strengthening endangered bridges by means of structural system modification,including structure disassembly technology,anti-overturning construction technology and the whole construction process monitoring.This technology not only ensures safety in actual construction,but also saves cost and ensures work efficiency,and can provide a solution for similar projects.
suspended beamT-structure of bridgereinforcement of dangerous bridgesystem conversion
NETL
NSTL
万方数据
