Structural Behavior Analysis On Prestressed Concrete Bridge With V-shaped Pier

Longjin Bridge is a three-span prestressed concrete bridge with V-shaped pier.In this paper,finite element softwares including MIDAS CIVIL and ANSYS are used to research the force performance of this bridge.First,the FEM bridge model is established by MIDAS CIVIL,the iMPact of four different construction schemes on the bridge is studied.At the same time,the deflection and internal force distribution of Longjin Bridge are studied under four stages including the downfall stage,the second dead load stage,the completion of bridge after 10 years and the operational stage.Second,the FEM solid model of V-shaped pier and parts of the beam body is established by ANSYS,and the stress distribution in the V-shaped pier of Longjin Bridge is analyzed under the four conditions including the downfall stage,the second dead load stage,the completion of bridge after 10 years and the operational stage.Then,the unfavorable-stress position is found,which is of significant reference value in practical engineering.Third,based FEM bridge model,solid springs are established at the pile fundamental element node to simulate the pile-soil effect.By changing the proportional coefficient of foundation soil value m,the iMPact of foundamental condition on prestressed concrete bridge with V-shaped pier is studied.Meanwhile,the iMPact of teMPareture and foundamental condition on prestressed concrete bridge with V-shaped pier simultaneously is studied when the teMPareture is considered.It is recommended to construct a prestressed concrete bridge with V-shaped pier in the soft foundation environment.Finally,by changing the angle of the V-shaped pier,the influence of different angles on the distribution of internal force is studied.Meanwhile,by changing the width of the V-shaped pier,the iMPact of the width on internal force of V-shaped pier is studied.The appropriate range of values for the V-shaped angle and the suitable thickness of oblique leg are given.The results in this thesis are benefit for the similar projects in the future.