Abstract
The paper presents an analysis of an actual problem related to dynamic effects to road bridges due to travelling a heavy vehicle over the bridge. Numerical simulations of the dynamic response are applied on a fictitious simple beam of the length Lb = 52 m with an artificial irregularity at midspan, corresponding to a characteristic span L (b5) = 52 m of the ten-span continuous box girder bridge. A heavy four-axle truck m v = 32 t is used for dynamic excitation, travelling over the bridge at passing speed of 70km / h. The obtained results are compared to results of the experimentally tested ten-span continuous pre-stressed reinforced concrete girder bridge at the same speed.
Highlights
Nowadays, one of the current problems in bridge engineering is evaluation of the dynamic response due to the intensive passages of heavy trucks and lorries over the bridge
This paper deals with validation of a simplified numerical modelling of a dynamic response of a bridge structure, induced by passing of a heavy truck vehicle over an artificial standard irregularity
The purpose of the numerical modelling has been: (1) To verify the proposed simplified solution of the dynamic response for a characteristic span of a continuous bridge structure, which is currently used the most, as a response of the fictive simple beam; (2) To evaluate the intense dynamic response due to the moving of a heavy truck as an impact of the impulse load arising on the irregularity
Summary
One of the current problems in bridge engineering is evaluation of the dynamic response due to the intensive passages of heavy trucks and lorries over the bridge. Numerical simulations were created for a characteristic span L(bi) = 52 m of the ten-span continuous box girder road bridge, modelled as a fictive simple beam associated to the characteristic span This field has been experimentally tested for crossing of a heavy truck at the speed of 70 km/h. The purpose of the numerical modelling has been: (1) To verify the proposed simplified solution of the dynamic response for a characteristic span of a continuous bridge structure, which is currently used the most, as a response of the fictive simple beam; (2) To evaluate the intense dynamic response due to the moving of a heavy truck as an impact of the impulse load arising on the irregularity
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
