Research on Key Construction Technology of Cast-in-place Concrete Box Girder With Curved Structure
The main structure of arc cast-in-place box girder is complicated,the boundary conditions and load conditions are special,so the risk probability of construction process is large,and the construction quality is not easy to control.Taking the prestressed reinforced concrete box girder structure of a public building as an example,the paper systematically expounds the key points of the design of the curved structure box girder,optimizes the design of the curved structure template based on the actual situation of the project,and finally determines that the concrete grade is C40,the tension control stress of the steel bar is 1 920 N/mm2,the edge mold is made of film plate,and the overall con-struction process is sorted out.According to the real-time monitoring of the whole construction process,the results show that the average stress of the control section of the main control parameter is 0.035 MPa,which verifies that the construction effect of the box girder is good.
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