Numerical Simulation of Prefabricated Prestressed Bridge Piers Based on Fiber Beam Element

Prefabrication of bridge structure is an important development direction of bridge construction. A large number of on-site construction operations are completed in advance in prefabricated factories, which can reduce the cost of maintenance of bridge construction. Based on the fiber beam element model, the secondary development and application of concrete and steel hysteretic constitutive models are carried out to better analyze the seismic behavior of prefabricated prestressed piers. On the basis of the existing literature, a reliable one-cycle hysteretic constitutive model of reinforced concrete materials was selected, and the existing prestressed reinforced concrete bridge piers were numerically simulated, and the load-displacement curves and quasi-static experiments were carried out. Comparative analysis demonstrates the feasibility of the constitutive model of reinforced concrete materials, as well as higher calculation accuracy and completion efficiency.