Simulation for the Truck-bridge Impact
Simulate the truck-bridge impact and discuss the damage
inside the bridge due to impact.
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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
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
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
