Accident assessment of vehicles on long-span bridges in windy environments

Chen, Suren; Cai, C.S.

doi:10.1016/j.jweia.2004.06.002

Cited by 129 publications

(52 citation statements)

References 12 publications

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“…It is known that in various adverse driving conditions, trucks are often involved in single-vehicle (SV) accidents in addition to multivehicle (MV) accidents (Chen and Chen, 2010;Baker, 1991;Chen and Cai, 2004). Although the absolute number of SV accidents is often lower than that of MV accidents, SV accidents usually result in more serious injury (The National Academies, 2006).…”

Section: Introductionmentioning

confidence: 99%

Injury severities of truck drivers in single- and multi-vehicle accidents on rural highways

Chen

2011

Accident Analysis & Prevention

333

238

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Section: Introductionmentioning

confidence: 99%

Injury severities of truck drivers in single- and multi-vehicle accidents on rural highways

Chen

2011

Accident Analysis & Prevention

333

238

View full text Add to dashboard Cite

“…The vehicle type and the vehicle distribution should be representative of the actual traffic load anticipated. In the absence of real traffic flow information though, the common practice when analyzing the vehicle-bridge interaction, is to use solely one type of vehicle, alone or as a series of identical vehicles (Guo and Xu 2001;Cai and Chen 2004;Chen and Cai 2004). Similarly, the present study assumes that vehicles running on the bridge have the same truck geometry, gross vehicle weight, axle spacing and number of axles.…”

Section: The Assumed Vehiclementioning

confidence: 99%

“…In general, the road roughness condition (RRC) affects significantly the vehicle response, and less so, the response of the bridge (Wang and Huang 1992;Xu and Guo 2003;Chen and Cai 2004;Cai and Chen 2004;Zhang and Cai 2011;Zhang and Yuan 2014). Figure 5 illustrates the response of the vehicle-bridge interacting system, for three cases: (1) without considering the RRC (black line), (2) for 'very good' RRC (grey line), and (3) for 'good' RRC (black line with circles).…”

Section: The Effect Of Road Roughnessmentioning

confidence: 99%

Dynamic vehicle–bridge interaction under simultaneous vertical earthquake excitation

Paraskeva

Dimitrakopoulos

Zeng

2016

Bull Earthquake Eng

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Traditionally, the seismic response analysis of a bridge does not account for the concurrent vehicle-bridge dynamic interaction. However, the behavior of a seismically excited bridge can jeopardize the safety of the vehicles running on it, even if the bridge itself remains undamaged. This study examines the seismic response of a vehicle-bridge interacting (VBI) system under vertical earthquake excitation, modelling the truck vehicles as rigid body assemblies. An application of the proposed scheme to a realistic case of (highway) bridge-(truck) vehicles shows that the earthquake ground motion and the road surface conditions are the main sources of excitation. The results show that the road surface conditions influence strongly the dynamics of the VBI system, even when the vertical component of the earthquake excitation is significant. Also, the study brings forward the influence of traffic parameters (namely the speed, the number and the distance between the running vehicles) and underlines the need to consider different positions of the vehicle/s (on the deck) during the earthquake shaking. Finally, it examines the tendency of the wheels of a truck vehicle to detach (jump) from the deck during the seismic response of the VBI system. Detachment tends to be more frequent as the road surface conditions deteriorate and/or the peak ground acceleration increases. However, detachment is a complicated phenomenon which depends also on many other ground motion and VBI system parameters and deserves further study.

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“…The fluid mass m f = L 0 ρh(x, t) dx is independent of time. This pivoting TLD setup is of interest to engineers, because it is a good mechanism for suppressing torsional vibrations on bridges caused by aerodynamic effects (Xue et al, 2000;Chen et al, 2008), which are a danger to high sided vehicles (Chen and Cai, 2004).…”

Section: Introductionmentioning

confidence: 99%

Instability of sloshing motion in a vessel undergoing pivoted oscillations

Turner

Ardakani

Bridges

2015

Journal of Fluids and Structures

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-AbstractSuspending a rectangular vessel partially filled with an inviscid fluid from a single rigid pivoting rod produces an interesting physical model for investigating the dynamic coupling between the fluid and vessel motion. The fluid motion is governed by the Euler equations relative to the moving frame of the vessel, and the vessel motion is given by a modified forced pendulum equation. The fully nonlinear, two-dimensional, equations of motion are derived and linearized for small-amplitude vessel and free-surface motions, and the natural frequencies of the system analysed. It is found that the linear problem exhibits an unstable solution if the rod length is shorter than a critical length which depends on the length of the vessel, the fluid height and the ratio of the fluid and vessel masses. In addition, we identify the existence of 1 : 1 resonances in the system where the symmetric sloshing modes oscillate with the same frequency as the coupled fluid/vessel motion. The implications of instability and resonance on the nonlinear problem are also briefly discussed.-October 23, 2014-

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Accident assessment of vehicles on long-span bridges in windy environments

Cited by 129 publications

References 12 publications

Injury severities of truck drivers in single- and multi-vehicle accidents on rural highways

Injury severities of truck drivers in single- and multi-vehicle accidents on rural highways

Dynamic vehicle–bridge interaction under simultaneous vertical earthquake excitation

Instability of sloshing motion in a vessel undergoing pivoted oscillations

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