Analysis of Construction Control and Lateral Displacement Deviation Influence of Steel Box Beam Float Tow and Pushing
This paper takes a long-span steel-concrete mixed continuous beam bridge in a three-dimensional traffic environment as the engineering background,in order to ensure the safety of bridge float tow and pushing construction,finite element analysis software is used to perform numerical analysis on the linear shape and structural stress of the steel box girder to ensure that the stress and deformation of the bridge are within the design requirements and meet the design requirements.At the same time,the overall force of the guide beam during the beam dropping stage is analyzed and checked to ensure the safety and stability of the steel box girder when the beam is dropped.The influence of lateral displacement in pushing process is analyzed.The results show that the stress of the steel box girder under the most unfavorable load state during pushing process is 248 MPa,and the maximum deformation is 19.73 mm,which meets the design requirements.The lateral displacement deviation of the box girder during the construction process has a significant impact on the stress of local components.It is recommended to control the lateral displacement deviation within 15 mm.
steel box girderfloat tow and pushinglateral displacement deviationconstruction controlnumerical analysis
万方数据
维普
