Performance assessment of precast concrete segmental bridge columns with a shear resistant connecting structure

Abstract

The purpose of this study was to investigate the performance of precast concrete segmental bridge columns with a shear resistant connecting structure. The goal of addressing system performance is to maximize the post-earthquake functionality of a structure and to minimize direct and indirect societal losses. The system can also reduce the work load at a construction site and can result in shorter construction periods. A model of precast concrete segmental bridge columns was tested under a constant axial load and a cyclically reversed horizontal load. The computer program, RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology) was used for the analysis of reinforced concrete structures. A bonded tendon element is used based on the finite element method that can represent the interaction between the tendon and concrete of a prestressed concrete member. A joint element is modified in order to predict the inelastic behaviors of segmental joints with a shear resistant connecting structure. This study documents the testing of precast concrete segmental bridge columns under cyclic loading and presents conclusions and design recommendations based on the experimental and analytical findings. Regarding the implementation of full-scale structures, an investigation of alternative construction details, performance under seismic rather than quasi-static lateral loading and the development of design procedures and guidelines will be carried out in the future.