Design Research of Width-variable Continuous U Beam in Rail Transit Engineering
A(30+48+30)m double-line widened continuous U beam is used when crossing the road in a rail transit project,and the main beam is cast-in-place.The distance of tracks the bridge lines varies greatly,so the design is difficult.The research in-tends to compare and analyze the calculation results of the rod system model and the three-dimensional solid model by establis-hing the finite element model,and study the longitudinal stress and transverse stress distribution on key sections,and verify rea-sonableness of the structural construction design and prestressed arrangement.And design points of the kind of bridge are put for-ward.Through the analysis,it is proved that the continuous U beam can be applied not only to the continuous structure with standard width,but also to the continuous widened structure in the non-turnout area thus expanding the application scope of the continuous U beam in the field of rail transit,and enriching the U beam structural system.
width-variable continuous U beamfinite elementdesign
万方数据
维普
