Dynamic responses and failure modes of bridge columns under vehicle collision

Abstract The dynamic responses and failure modes of reinforced concrete bridge columns under vehicle collision have been numerically investigated in this study by using a numerical model verified against some experimental testing data. The numerical results show that the Peak Impact Force (PIF) from the collision is governed by the vehicle engine and the vehicle velocity while the impulse of the impact force is influenced by the initial momentum of the total mass. It is, therefore, suggested that not only the total vehicle mass and the vehicle velocity but also the engine’s weight need to be considered to determine the impact force on structures under vehicle collision. The engine’s mass significantly affects the peak impact force, the moment, the shear force and thus the damage of the column. The lateral impact force considerably affects the column axial force and a relation between the PIF and the increase of the axial force is proposed for the design purpose. The numerical model is able to reproduce and provide an explanation of most of the common failure modes observed in real impact events including flexural failure, shear failure, and punching shear damage. In addition, the influences of four different methods of the superstructure modelling, i.e. uniformly distributed load, lumped mass, simplified beam model, and 3D detailed model on the behaviour of the bridge column under vehicle impact are also investigated.

[1]  H. Hao,et al.  Impact Behavior of FRP-Strengthened RC Beams without Stirrups , 2016 .

[2]  Mohamed A. ElGawady,et al.  Performance of bridge piers under vehicle collision , 2017 .

[3]  Hong Hao,et al.  Laboratory tests and numerical simulations of barge impact on circular reinforced concrete piers , 2013 .

[4]  Hong Hao,et al.  Influence of the concrete DIF model on the numerical predictions of RC wall responses to blast loadings , 2014 .

[5]  Hong Hao,et al.  Numerical study of precast segmental column under blast loads , 2017 .

[6]  Hong Hao,et al.  Experimental confirmation of some factors influencing dynamic concrete compressive strengths in high-speed impact tests , 2013 .

[7]  Stefan Hurlebaus,et al.  Performance-based response evaluation of reinforced concrete columns subject to vehicle impact , 2012 .

[8]  Gary R. Consolazio,et al.  Simplified Dynamic Analysis of Barge Collision for Bridge Design , 2008 .

[9]  Tuan Duc Ngo,et al.  Behaviour of high strength concrete subject to impulsive loading , 2005 .

[10]  Frieder Seible,et al.  SEISMIC PERFORMANCE OF PRECAST SEGMENTAL BRIDGE SUPERSTRUCTURES WITH INTERNALLY BONDED PRESTRESSING TENDONS , 2002 .

[11]  Sherif El-Tawil,et al.  Vehicle Collision with Bridge Piers , 2005 .

[12]  John E. Crawford,et al.  Dynamic Increase Factors for Steel Reinforcing Bars , 1998 .

[13]  A K Agrawal.  Bridge vehicle impact assessment. , 2011 .

[14]  Hong Hao,et al.  Plastic hinges and inertia forces in RC beams under impact loads , 2017 .

[15]  H. Hao,et al.  Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams , 2017 .

[16]  Kazunori Fujikake,et al.  Impact Response of Reinforced Concrete Beam and Its Analytical Evaluation , 2009 .

[17]  Srinivas Reddy Geedipally,et al.  Analysis of Large Truck Collisions with Bridge Piers: Phase 1. Report of Guidelines for Designing Bridge Piers and Abutments for Vehicle Collisions , 2010 .

[18]  Manicka Dhanasekar,et al.  Numerical simulation of axially loaded concrete columns under transverse impact and vulnerability assessment , 2010 .

[19]  Xiao Yan.  Review of Studies on Vehicle Anti-collision on Bridge Piers , 2012 .

[20]  Andre Filiatrault,et al.  Large-Scale Seismic Testing of a Hybrid Sliding-Rocking Posttensioned Segmental Bridge System , 2014 .

[21]  Hong Hao,et al.  Numerical Analysis of Prestressed Reinforced Concrete Beam Subjected to Blast Loading , 2015 .

[22]  Yan Xiao,et al.  Response of shear-deficient reinforced circular RC columns under lateral impact loading , 2017 .

[23]  Hong Hao,et al.  Experimental investigation of the response of precast segmental columns subjected to impact loading , 2016 .

[24]  Eugene Buth,et al.  Collision Loads on Bridge Piers: Phase 2. Report of Guidelines for Designing Bridge Piers and Abutments for Vehicle Collisions , 2011 .

[25]  Mohamed A. ElGawady,et al.  Performance of hollow-core FRP–concrete–steel bridge columns subjected to vehicle collision , 2016 .

[26]  Bryan E. Little,et al.  American Association of State Highway and Transportation Officials. Highway Drainage Guidelines American Association of State Highway and Transportation Officials. LRFD Bridge Design Specifications , 2000 .