Comparison of Totally Prefabricated Bridge Substructure Designed According to Korea Highway Bridge Design (KHBD) and AASHTO-LRFD

Abstract

The purpose of this study was to investigate the design comparison of totally prefabricated bridge substructure system. Prefabricated bridge substructure systems are a relatively new and versatile alternative in substructure design that can offer numerous benefits. The system can reduce the work load at a construction site and can result in shorter construction periods. The prefabricated bridge substructures are designed by the methods of Korea Highway Bridge Code (KHBD) and load and resistance factor design (AASHTO-LRFD). For the design, the KHBD with DB-24 and DL-24 live loads is used. This study evaluates the design method of KHBD (2005) and AASHTO-LRFD (2007) for totally prefabricated bridge substructure systems. The computer program, 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, and can represent the interaction between the tendon and concrete of a prestressed concrete member. A joint element is used in order to predict the inelastic behaviors of segmental joints. This study documents the design comparison of totally prefabricated bridge substructure and presents conclusions and design recommendations based on the analytical findings.

Case Study on Advanced Hoisting, Positioning, and Control Techniques for Non-Standard Pier Construction in the Quanli-Dongfeng Viaduct Project

“…The findings revealed that this approach accelerates bridge construction and enhances durability. In a comparative study of design systems, Kim [6] examined the Korean highway bridge specifications and the load and resistance factor design, concluding that the latter can reduce construction costs by 9%. Several scholars have conducted research on the load-bearing capacity and seismic performance of pier columns.…”

Analytical Study of Force–Displacement Behavior and Ductility of Self-centering Segmental Concrete Columns

“…In the recent past considerable attention has been given to the use of self-centering precast concrete members and connections (Priestley et al 1999;Kurama et al 2002;Perez et al 2007;Kim and Choi 2015) and bridge construction (Dawood et al 2011;Kwan and Billington 2003;Youssf et al 2015aYoussf et al , 2016Kim et al 2012;Kim 2013). Self-centering behavior can be induced to the system by employing unbonded post-tensioning (PT) steel.…”

The Hysteresis Performance and Restoring Force Model for Corroded Reinforced Concrete Frame Columns

“…The hysteresis performance and restoring force model are mainly influenced by factors such as the size of the members, reinforcement ratio, loading system, and material properties [10][11][12]. The hysteresis curve reflects the characteristics of structures or members during repetitive stress, including deformation, stiffness degradation, and energy consumption [14][15][16]. The restoring force model of members refers to the capacity of members to restore themselves to their original column form after unloading and shows the mathematical relationship between restoring force and deformation under cyclic loading [14].…”