Seismic Behavior of Steel Monorail Bridges Under Train Load During Strong Earthquakes

Kim, C. W.; Kawatani, Mitsuo; Kanbara, Takeshi; Nishimura, Nobuo

doi:10.1142/s1793431113500061

Cited by 19 publications

(8 citation statements)

References 11 publications

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“…The analyses demonstrated that the dynamic train system acts as a damper on the bridge, and thus considering the train as an additional mass is a conservative approach. Another later research [11] analytically investigating the effect of train dynamics on seismic response of steel monorail bridges under strong earthquakes conducted by Kim et al revealed that modeling the monorail train as an additional mass rather than a dynamic system overestimates the effect of train load on the bridge seismic response. A similar study, this time on the heavy vehicle effect on the dynamic behavior of a highway viaduct under moderate ground motions, has been carried out by Kim et al [12].…”

Section: Introductionmentioning

confidence: 99%

Vehicle effects on seismic response of a simple‐span bridge during shake tests

Shaban

Caner

Yakut

et al. 2014

Earthq Engng Struct Dyn

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Summary Presence of vehicles on a bridge has been observed many times during past earthquakes. Although in practice, the engineers may or may not include the live load contribution to seismic weight in design, current bridge design codes do not specify a certain guideline. A very limited research has been conducted to address this issue from design point of view. The focus of this research is to experimentally assess the effect of a vehicle on the seismic response of a bridge through a large‐scale model. In this scope, a 12‐meter long bridge, having a one lane deck with concrete slab on steel girders, has been shaken under five different ground motions obtained from recent earthquakes that occurred in Turkey, in its transverse direction, both with and without a vehicle on top of the deck. The measured results have indicated that top slab transverse acceleration and bearing displacements can reduce up to 18.7% in presence of a vehicle during seismic tests, which is an indication of reduction in substructure forces. The main reason for the reduction in seismic response of the bridge in the presence of live load can be ascribed to the increase in damping of the system due to mass damper‐like action induced by the vehicle. This beneficial effect cannot be observed in vertical seismic response. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Vehicle effects on seismic response of a simple‐span bridge during shake tests

Shaban

Caner

Yakut

et al. 2014

Earthq Engng Struct Dyn

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“…(8), q denotes the linear density of the beam; N denotes the shape function of the element which is derived from Eqs. (1) to (6).…”

Section: Straddle-type Monorail Track Beam Systemmentioning

confidence: 99%

“…Trahair [5] proposed a calculation method which takes the beneficial lateral load into account in the analysis of the lateral buckling of the monorail steel beam. Kim and Kawatani [6] analyzed the dynamic responses of the improved monorail steel track beam with a transverse support system under seismic activities. Ren et al [7,8], Zhao [9], Du and Wang [10], Ma [13], Liu [11,12] and Shan [14] also studied the responses of the straddle monorail vehicle from different aspects.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Analysis of the Straddle-Type Monorail Bridge–Vehicle Coupling System

2017

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An analytical procedure of dynamic interaction analysis of the straddle monorail bridge-vehicle coupling system is proposed in this paper based on the finite element method and energy method. The calculation procedure is programmed with VB language for the solution of the governing motion equations of the straddle-type monorail bridge-vehicle coupling system. The effects of speed, three kinds of loads and different radius of curvature on dynamic responses of the monorail bridge-vehicle coupling system are analyzed. The simulation indicates that vertical vibration amplitude of the track beam decreases while the lateral amplitude increases with the increase in the radius of the curvature; the maximum value in lateral and vertical direction is 0.075 and 0.43 mm, respectively; and the maximum amplitude (lateral and vertical) and acceleration (lateral and vertical) are 0.69, 0.046 mm, 0.15 and 0.62 m/ s 2 , respectively, at the speed of 80 km/h. The vibration amplitude (lateral and vertical) and vertical acceleration increase with the increasing load, and the maximum values are 0.041, 0.43 mm and 0.44 m/s 2 , respectively. The lateral acceleration is not easily affected by the load conditions.

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“…Naeimi et al used finite element method and dynamic simulation to study the deformation of track beam under compression, the coupling dynamic response of vehiclebridge under the condition of elastic beam is calculated, and the correctness of the model is verified by comparing the dynamic simulation results of tires with those of vehicle manufacturers [11]; Lv, KK et al studied the influence of wheel eccentricity on the vertical vibration of the suspended monorail vehicle through experiments and simulations, and determined that the abnormal vibration of the body was mainly caused by the wheel eccentricity [12]; Kim. CW et al studied the dynamic response of steel beams under strong earthquakes with consideration of vehicle-bridge interaction, and the aseismic behavior of monorail rail beam with steel structure is affirmed [13].…”

Section: Introductionmentioning

confidence: 99%

Research on Vehicle-Bridge Vertical Coupling Dynamics of Monorail based on Multiple Road Excitations

Yang

et al. 2020

mech

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In order to study the vertical dynamic behavior of the monorail-bridge system, the vehicle-bridge coupling dynamic equation and train simulation model are established based on the principle of dynamics; the train simulation model is established based on the multi-body dynamics; the track model is established based on the finite element theory, and the compression deformation of PC beam and the effect of finger band on train are equivalent to load spectrum on train axle by means of dynamic equivalence principle, and finally, the train-track interaction model is established; the vertical vibration of the train before and after adding the influence of the compressive deformation of the track beam is simulated and calculated respectively, the results show that the influence of the compressive deformation of the track beam on the vertical vibration of the train is significant, and the simulation data under multiple road excitations are very close to the real value.

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Seismic Behavior of Steel Monorail Bridges Under Train Load During Strong Earthquakes

Cited by 19 publications

References 11 publications

Vehicle effects on seismic response of a simple‐span bridge during shake tests

Vehicle effects on seismic response of a simple‐span bridge during shake tests

Dynamic Response Analysis of the Straddle-Type Monorail Bridge–Vehicle Coupling System

Research on Vehicle-Bridge Vertical Coupling Dynamics of Monorail based on Multiple Road Excitations

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