Research on the Internal Force Analysis of Continuous Girder Steel Support System of Sangyuangou Bridge of Yinba Railway
In order to study the mechanical characteristics of the cast-in-place bracket structure of continuous girder section No 0,the strength of transverse distribution beam,main longitudinal beam,row frame and steel pipe column were firstly tested through Midas Civil finite element modeling,and secondly,the stability of connection key and steel pipe column were analyzed.The research shows that the maximum combined stress of transverse distribution beam and main longitudinal beam is 71.4 MPa,the maximum shear stress is 24.5 MPa,and the maximum bending deformation is 2.04 mm;the maximum combined stress of row frame is 59.4 MPa,the maximum shear stress is 47.1 MPa;the maximum combined stress of connection system is 41.8 MPa;the strength,stiffness and stability of steel pipe support of cast-in-place continuous beam are within the allowable range of design and can meet the construction requirements.The strength,stiffness and stability of the cast-in-place continuous beam steel pipe brace are within the allowable range of design and can meet the construction requirements,and the relevant calculation parameters can guide the construction.
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