Open AccessResearch on bearing jacking method of steel -concrete composite beam bridge
Author(s) -
Jinxin Liu,
Xing Ma,
Zhang Xin
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/647/1/012118
Subject(s) - jacking , structural engineering , bending moment , composite number , deck , girder , bearing (navigation) , beam (structure) , ultimate tensile strength , bridge (graph theory) , materials science , stress (linguistics) , bending , geotechnical engineering , engineering , composite material , computer science , medicine , art , linguistics , philosophy , artificial intelligence , performance art , art history
There are plenty of advantages of steel-concrete composite beam bridges. However, Transverse cracks in composite girder bridges usually appear because of the tensile stresses in the concrete deck induced by the negative bending moment at the intermediate supports of continuous composite girder bridges. There are many measures to reduce the tensile stress in the negative bending moment zone of steel-concrete composite beams. At present, bearing jacking method is used more and more in engineering. Taking a composite beam in Shaanxi province as an example, this paper studies the influence of jacking amount and span number on the improvement effect of bearing jacking method. The improvement of stress level of concrete deck in negative moment zone of steel-concrete composite beam bridge is studied and analysed which puts forward relevant engineering solution.