Analysis Of Response Of Assembled Bridge Pier Joints

The application of prefabricated bridge piers not only makes the bridge construction more rapid,reduces the impact on urban traffic,but also is environmentally friendly,safe and reliable,and is more in line with today’s industrialized development concept.Therefore,the development of prefabricated bridge piers is imperative.The finite element software ABAQUS is used to simulate the pier,and the structural performance of the pier is analyzed.The specific work is as follows:(1)The article expounds the research background of prefabricated bridge piers,the research and development status of prefabricated bridge piers at home and abroad,and introduces the connection mode and connection form of prefabricated bridge piers.(2)The article determines the constitutive relationship of materials such as reinforcement and concrete,clarifies the modeling process of ABAQUS,establishes a prestressed assembled pier and sleeve-connected assembled pier model,and verifies the correctness of the model.(3)The article performs pseudo-static test simulation on prestressed assembled pier and sleeve-connected assembled pier.This article analyzes the prestressed prefabricated bridge piers from the aspects of constant load axial compression ratio,initial prestress degree,prestressed reinforcement ratio,energy dissipation reinforcement,and prestressed reinforcement arrangement.This article analyzes the sleeve-connected assembled pier from the aspects of constant load axial compression ratio,longitudinal reinforcement ratio,sleeve length,number of pier sections,sleeve form,sleeve arrangement.This paper studies the energy dissipation capacity,peak load,stiffness change,and residual deformation capacity of fabricated bridge piers.Simultaneously,a tensile test simulation is performed on the sleeve connector.(4)This paper analyzes the stress response of the joints of the assembled pier with sleeve connection.In this paper,the influence of shear bond,prestress and longitudinal reinforcement ratio on the shear slip behavior and joint opening behavior of bridge pier joints is studied.