Cantilever construction stress monitoring of a curved box girder bridge

According to the field test results,it makes an analysis of curved box girder cantilever construction process,the stress variation of the root section.The results show that the eccentric load will be hung in the box the root of the local flange horizontal position have a greater tensile stress,and even lead to the longitudinal deck cracking,for the beam bridge,box girder web and the wing on both sides edge of plate stress was non-symmetrical distribution,the construction process should pay attention to the construction sequence and construction load on the structure of internal forces.