Simulation for the Truck-bridge Collision

Simulate the truck-bridge collison and discuss the collision induced damage inside the bridge.

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Collision test of a FRP bridge beam Fiber Reinforced Plastics/Composites, 2011 Download
Engineering design method for the impact load of collision between over-height truck and bridge superstructure China Journal of Highway and Transport, 2011 Download
High precision finite element simulation and simplified calculation for the collision load between over-high truck and bridge superstructure Engineering Mechanics, 2011 Download
Simulation and analysis of a collision accident between over-high truck and pedestrian bridge, Journal of Transport Information and Safety, 2009 Download
Collision between Over-high Trucks and Bridge Superstructures: Damage Mechanism and Impact Loads Engineering Mechanics, 2009 Download
Simplified model and design equations for the collision between over-high truck and bridge Proc. 4th Int. Conf. on Protection of Structures Against Hazards, 2009 Download
Failure Modes and Load Calculation of Collision Between Over-high Truck and Bridge Superstructure China Journal of Highway and Transport, 2009 Download
Calculation for the collision loads between different over-high trucks and bridge superstructures Proc. 7 National Conf. on the Safety Protection of Engineering Structures, 2009 Download
Nonlinear finite element simulation for the impact between over-high truck and bridge-superstructure Proc. 7th Int. Conf. Shock & Impact Loads on Structures, 2007 Download
Computer Simulation for the Impact between Over-high Truck and Composite Viaduct Computer and Communications, 2007 Download
Impact Simulation for Over-high Truck and viaduct based on High Precision Nonlinear Finite Element Analysis Journal of Shijiazhuang Railway Institute, 2007 Download

Collision test of a FRP bridge beam
Fiber Reinforced Plastics/Composites, 2011, (5): 24-28

Abstract: With the increasing expansion in civil engineering in recent years, Fiber Reinforced Polymer (FRP) has been recognized as a competitive material to those conventional materials in bridge structures, especially for footbridge design and construction. However, collision accidents between over-high trucks and bridge superstructures frequently happened, which seriously threaten the safety of bridges and traffic system of city. To ensure FRP structure can be more widely used for bridge construction, structure-vehicle collision mechanism should be studied, so as to improve collision-resisted ability of bridge superstructure. In this paper, a collision testing between over-high trucks and bridge superstructure was carried out, including failure process, displacement response, and failure mode and mechanism. The test results will be used for finite element analysis and further verification, so as to improve structural performance of FRP superstructure under such impact load.
Keywords: bridge engineering; collision test; FRP structure; superstructure; over-high truck

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Engineering design method for the impact load of collision between over-height truck and bridge superstructure,
China Journal of Highway and Transport, 2011, 24(2): 49-55.

Abstract: In order to compensate for the insufficient of the research on collisions between over-high trucks and bridge superstructures and improve their engineering design method, a simplified model for the collision between over-height trucks and bridge superstructures is proposed based on the accident investigations and high precision finite element (FE) analysis. And then differential equations for the simplified model are set up and some parameters of the simplified model are calibrated by numerical experiments. Thus, the collision loads of the simplified model are obtained. What's more, to further meet the requirement of the engineering design, simplify formed engineering design formulas are put forward and the main value of the basic parameters of engineering design formulas are presented in table. Finally, the comparison between simplified model, design formulas and FE method are carried out. The comparisons indicate that the collision loads obtained by the proposed simplified model and design formulas agree well with the FE results and are conservative for engineering, which could provide references for engineering design.
Key words: Over-height trucks; Bridge superstructures; Collision; Simplified model; Design formulas

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High precision finite element simulation and simplified calculation for the collision load between over-high truck and bridge superstructure,
Engineering Mechanics, 2011, 28(1): 116-123.

Abstract: Recently the collisions between over-high trucks and bridge superstructures have become a serious threaten to the safety of city traffic. In order to reduce the loss due to collision accidents, it's critical to precisely calculate the collision loads. This work firstly simulates the collision process between over-high trucks and bridge superstructures based on high precision finite element model, and primary influencing factors that control the collision loads are discussed. Then by ignoring the unimportant influencing factors, a simplified model for the collision between over-high trucks and bridge superstructures is developed. The time-history results of simplified model agree well with those of the high precision finite element model, so the proposed simplified model can be used in practical application.
Keywords: collision; load calculation; high precision finite element; simplified model; bridge superstructure; over-high truck

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Simulation and analysis of a collision accident between over-high truck and pedestrian bridge,
Journal of Transport Information and Safety, 2009, 27(6): 89-92.

Abstract: An accident of collision between over-high truck and pedestrian bridge is simulated by means of high-precision finite element model, the reasons of collapse is analyzed and the corresponding protection measures is suggested. This paper firstly introduced the proposed numerical model and then described the collision process of simulation. Based on the analytical results, the reason of the girder falling is discussed and the response of the girder after the collision is analyzed. Finally, the corresponding protection measures are proposed and the effectiveness of these measures is verified.
Keywords: truck-bridge collision, numerical simulation, bridge, collision prevention

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Collision between Over-high Trucks and Bridge Superstructures: Damage Mechanism and Impact Loads
Engineering Structures, 2009, 26(sup.II): 115-125.

Abstract: Recently, accidents of collisions between over-high trucks and bridge superstructures happen frequently, which seriously threaten the safety of bridges and city traffic system. In order to reduce the loss due to the over-high-truck-to-bridge collision, the collision resistance of bridge superstructures need to be strengthened, on which the research is still very lack currently in China. Based on the high-precision nonlinear finite element simulation and accident investigation, this paper discusses the damage mechanism and collision loads of impact between over-high trucks and bridge superstructures. Study results show that the damage modes of bridge superstructures impacted by over-high trucks include global deformation damage, local damage and girder-falling. The impact loads that controls the damage modes include the collision impulse and the local punching force, which differ a lot for different types of trucks.
Keywords: Impact; Bridge superstructure; Over-high truck; High-precision nonlinear finite element; Damage mechanism; Collision loads

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Simplified model and design equations for the collision between over-high truck and bridge superstructures,
Proc. 4th Int. Conf. on Protection of Structures Against Hazards, Oct. 2009, Beijing, China: 425-432.

Abstract: Recently, the accidents of collisions between over-high trucks and bridge superstructures happen frequently, which seriously threaten the safety of bridges and city traffic system. Based on the simulation of collision between over-high truck and bridge superstructures with nonlinear finite element model, this paper discusses the main factors that influencing the collision load, and proposes corresponding simplified calculation model and design equations. The results of the simplified model and the design equations are compared with the finite element model and the comparison shows that both the proposed simplified model and design equations are conservative and accurate enough for engineering applications.
Keywords: Over-high truck, Bridge substructures, collision, Simplified model, Design equations

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Failure Modes and Load Calculation of Collision Between Over-high Truck and Bridge Superstructure
China Journal of Highway and Transport, 2009, 22(5): 60-67.

Abstract: In order to improve the design and the capacity of anti-collision of bridge super-structure , the mechanism of collision between over-high truck and bridge super structure was studied. Based on actual accident investigations and high-precision finite element simulation, classical collision accident of bridge super structure and over-high truck was simulated. The failure modes and displacement response of the bridge super structure under collision of over-high truck were analyzed , and the calculation method for collision load were discussed. Results indicate that t he failure modes of bridge super structure impacted by collision of over-high truck include the global and local failures, which can be designed by the simplified half-sine collision load time history.
Keywords: bridge engineering; super structure; high-precision finite element; design of anti-collision ; over-high truck ; failure mode

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Calculation for the collision loads between different over-high trucks and bridge superstructures
Proc. 7 National Conf. on the Safety Protection of Engineering Structures, Jul. 2009, Ningbo, China: 237-242
.

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Nonlinear finite element simulation for the impact between over-high truck and bridge-superstructure
Proc. 7th Int. Conf. Shock & Impact Loads on Structures, Oct. 17-19, 2007, Beijing, China, 387-394
.

Abstract: According to statistic data supplied by relative departments, about half of the bridge-superstructures in Beijing have been impacted by over-high trucks. And over 20% of the bridge-superstructure failures in Beijing are due to over-high trucksĄŻ impact. Hence it is an important problem that needs to be studied for the safety of the traffic system. Current researches on the impacts between vehicles and structures are mostly focused on ship-bridge pier, car-bridge pier and car-barrier impact. The works on the impact between over-high truck and bridge-superstructure is lacked. This paper presents the nonlinear finite element (FE) simulation for the impact between over-high truck and bridge-superstructure. Besides the nonlinearity of geometry, material and contact, a more accurate reinforced concrete model with FE package of MSC.MARC is adopted in the FE model to give a more realistic simulation for the bridge girders. The whole impact process is simulated and the damages in truck and bridge-superstructures are discussed.
Keywords: Bridge, Over-high truck, Impact, Simulation, Nonlinear

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Computer Simulation for the Impact between Over-high Truck and Composite Viaduct
Computer and Communications, 25(3), 2007, 65-69.

Abstract: Accidents of impact between over-high trucks and viaducts happen frequently. 20% of failures of viaducts in Beijing are because of over-high trucks impact. Detailed study on the mechanism of truck-viaduct impact is important to assess the damage of impact to the viaducts. Due to the difficulties of experimental research on this problem, computer simulation has obviously advantages. The steel-concrete composite bridge has been widely used in bridges because it can fully take the advantages of the two materials. But due to the thin thickness of steel plate at the bottom of the bridge, when the steel tension zone is damaged by impact, the safety of the whole structure will be seriously threatened. So the truck impact for composite viaducts should be considered. This paper presents the high precision simulation for the truck- composite viaduct impact based on high performance nonlinear finite element analysis. The computational results show that the impact may result in serious damage to the bridges and protective equipment should be given for composite bridges.
Key words: Composite structure, viaduct, impact, nonlinear, finite element

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Impact Simulation for Over-high Truck and viaduct based on High Precision Nonlinear Finite Element Analysis
Journal of Shijiazhuang Railway Institute, 20(1), 2007, 29-34.

Abstract: Accidents of impact between over-high trucks and viaducts happen frequently. Detailed study on the mechanism of truck-viaduct impact is important to setup the computational method of impact. This paper presents the high precision simulation for the truck-viaduct impact based on high performance nonlinear finite element analysis. And the influence of truck speed to the damage of the bridge is discussed. The computational results can be used for the further studies on truck-viaduct impact problem.
Key words: Impact, viaduct, truck, simulation, nonlinear

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