Transverse Flexural Resistance of TL-1 and TL-2 Steel-Reinforced Concrete Bridge Barriers Using the Yield-Line Theory
Concrete Bridge barrier must be designed so that it could resist vehicle impact loads specified in bridge design codes such the Canadian Highway Bridge Design Code (CHBDC).These impact loads are classified into different test levels.Test levels 1 and 2 (TL-1 and TL-2) are defined for low volume roadway bridges with vehicle speed of 50 km/h.Based on these conditions, impact loads, barrier height and load distribution length are provided in the code, and the barrier analysis and design must be conducted using these specifications.Yield-Line theory is a method suggested in AASHTO LRFD Specifications and CHBDC to obtain the barrier ultimate load capacity due to transverse impact loading.However, literature have shown the current triangular yield-line failure pattern provided in AASHTO is not accurate..In this study, a modified trapezoidal scheme for yield-line analysis has been utilized for analyzing TL-1 and TL-2 bridge barriers.The analysis procedure included changes in amount of vertical and horizontal reinforcement.Finally, recommended barrier design and the impact resistances at interior and end locations are provided.
Bridge barrier Yield-line theory Failure pattern Impact resistance Concrete structures
M.Fadaee K.Sennah
Department of Civil Engineering, Ryerson University, Toronto, Canada
国际会议
福州
英文
37-46
2018-11-04（万方平台首次上网日期，不代表论文的发表时间）