Numerical Simulation Analysis of Seismic Performance of Prefabricated Segmental Assembled Piers with Core Filling at the Bottom
In order to promote the application of prefabricated segmental assembled piers in the complex environ-ment of mountainous areas and strong seismic areas,a kind of prefabricated segmental assembled pier with core fill-ing at the bottom is proposed.ABAQUS finite element model is used to discuss the influence of key parameters such as the height of core filling sections,the initial tensioning force and the reinforcement ratio of energy dissipation bar on the seismic performance of the prefabricated segmental assembled piers with core filling at the bottom.The results show that the bearing capacity and energy consumption capacity of the prefabricated segmental assembled piers with core filling at the bottom increases significantly with the increase of the height of core filling sections.But the residual displacement and the width of the joint opening in the upper part of the core filling sections also increase;With the increase of the initial tensioning force,the bearing capacity and energy consumption capacity of the prefabricated segmental assembled piers with core filling at the bottom increase slightly,and the residual displacement and the damage of the concrete at the bottom of the pier are basically unchanged;With the increase of the reinforcement rate of energy dissipation bar,the bearing capacity and energy consumption capacity of the prefabricated segmental as-sembled piers with core filling at the bottom increases.But the width of the upper joint opening of the core-filled segment increases.The results can provide reference for the reasonable construction of precast segmental piers with core filling at the bottom,and promote the application of precast segmental piers in mountainous areas with complex environments and strong seismic zones.
prefabricated segmental assembled pierscore filling at the bottomseismic performanceheight of core filling sectioninitial tensioning forcereinforcement ratio of energy dissipation bar
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