Static and Dynamic Testing of a Concrete Bridge in Bucharest

Răcănel, Ionuţ Radu

doi:10.5593/sgem2015/b13/s5.131

Cited by 2 publications

(1 citation statement)

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“…Moving vehicle test is to pass through the bridge with vehicle to produce forced vibration, and sometimes obstacles are placed on the deck in order to increase the input to the bridge. IR Racanel 10 artificially produced an obstacle on the bridge so that the superstructure of the bridge can produce an impact force under dynamic loads. H Alaylioglu and A Alaylioglu 11 placed wooden planks across the central line of the bridge deck, and vibration tests of different vehicles at different speeds were carried out to obtain dynamic response characteristic.…”

Section: Introductionmentioning

confidence: 99%

Analysis method of dynamic response in the whole process of the vehicle bump test of simply supported bridge

Tan

Kong

et al. 2019

Advances in Mechanical Engineering

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For medium-and small-span bridges, the vehicle bump test is one of the most commonly used excitation methods, dynamic response of which can provide theoretical support for the dynamic load test. This article presents a dynamic response analysis method for the whole process of the vehicle bump test. First, the process of vehicle bump is divided into three stages based on transformation of the vehicle-bridge contact condition, including the static state before vehicle bump, the process of vehicle bump, and the free-decay vibration after vehicle bump. Second, the vibration equations of each stage are established, respectively, on the basis of the characteristics of vehicle-bridge coupling vibration. Then, the starting time and initial conditions of each stage are determined and the dynamic response is estimated by the fourth-order Runge-Kutta method. Finally, a field experiment is carried out; the error of the maximum strain value between the proposed method and the test method is less than 15%, which perfectly verifies the reliability of the method. The dynamic response of a T-shaped simply supported bridge of the whole vehicle bump process is solved by numerical simulation which indicates that the proposed method can provide theoretical basis for the choice of vehicle bump height.

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Section: Introductionmentioning

confidence: 99%

Analysis method of dynamic response in the whole process of the vehicle bump test of simply supported bridge

Tan

Kong

et al. 2019

Advances in Mechanical Engineering

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Determination method of limit vehicle bump height in dynamic load test of simply supported bridge

Tan¹,

Liu²,

Jiao³

et al. 2017

J. vibroeng.

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The bump height is one of the key factors which affects the vehicle bump test. If the adopted value of bump height is too small, the test couldn't get obvious excitation effect for bridge structures. On the other hand, it will cause additional structural damage when the value is rather large. Aiming at this point, the theoretical calculation method to determine limit bump height is proposed in this paper. The vehicle bump test is decomposed into three stages, i.e., the period before rear wheels contacting with bridge, the moment at rear wheels contacting with bridge, the period after rear wheels contacting with bridge. In stage I, the total momentum generated by vehicle rotating around front wheels is calculated. Then, the initial conditions for stage III are derived using the principle of momentum conservation in stage II. Finally, combining with vehicle-bridge coupling equations, the free-decay response of bridge could be calculated to determine the limit bump height in stage III. In this paper, the reliability of the proposed method is validated by finite element method (FEM), and numerical simulations on an actual simply supported hollow slab bridge are used to calculate the dynamic response of bridge considering various transverse positions of vehicle bump and determine the limit bump height.

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Static and Dynamic Testing of a Concrete Bridge in Bucharest

Cited by 2 publications

References 0 publications

Analysis method of dynamic response in the whole process of the vehicle bump test of simply supported bridge

Analysis method of dynamic response in the whole process of the vehicle bump test of simply supported bridge

Determination method of limit vehicle bump height in dynamic load test of simply supported bridge

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