Behaviour of Test-Level 4 Concrete Bridge Barrier Mounted Over Concrete Retaining Wall under Medium Volume Traffic Loading
Traffic barrier integrated with retaining wall system is a reliable and quick method which can be used in in highway bridge design.In general barrier walls must resist the collision loads;thus, the connections between the barrier wall and top of retaining wall should be designed to diminish the effect of those collision loads on entire retaining wall system.For this purpose, a good understand of the way the loads are transferred from barrier wall to the barrier base and then foundation is critical for designing a effective barrier/retaining wall system.Nevertheless, it is required to develop a standardized procedure for designing roadside barrier over retaining wall system.Canadian Highway Bridge Design Code (CHBDC) provides a method to determine the applied impact loads on the barrier walls;however, the rational approach to calculate the factored moment and shear for designing the joints between the traffic barrier and top of retaining wall is not introduced yet.In this paper, Finite Element Analysis (FEA) conducted on test level 4 (TL-4) traffic barrier over retaining wall system with various parameters due to collision loads.The height of retaining wall varied between 1.8 to 7.2 m with 1.8 m increments.The length between expansion joints was considered from 9 to 27 m, with increments of 3 m.Furthermore, the results obtained from finite element analysis in the form of charts to visualize the effect of each parameter on factored moment and shear intensity.In addition, the results of this study were compared with the method of analyzing of roadside barrier/retaining wall system proposed by Washington State Department of Transportation.At the end, the way load distributed through the entire system of barrier/retaining wall can be concluded.
Bridge design code barrier Retaining wall CHBDC
H.Pourmand K.Sennah
Ryerson University, Toronto, Canada
国际会议
福州
英文
861-870
2018-11-04（万方平台首次上网日期，不代表论文的发表时间）