| In the box girder construction process,several pieces of box girder’s part of the corrugated tube appeared blocking phenomenon,then they were take "surgical operation" treatment,namely chiseled to opened holes.To judge whether the box girders after treatment are in accordance with the design requirement,they decided to conducted the static loading experiment of the box girders.The experiment mainly test the strain,deflection and residual deformation,etc.under the loads about the box girders.The experiment’s results shows that the box girders’ strength,stiffness all conform to the standard.We can draw a conclusion from the experiment:the "surgical operation" has not effected the bearing capacity,the box girders can be normal used. |