Dynamic responses of a cable-stayed bridge under a high speed train with random track irregularities and a vertical seismic load

Mu, Di; Gwon, Sun-Gil; Choi, Dongho

doi:10.1007/s13296-016-0104-x

Cited by 19 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At time t the location of the k th moving load is located by x k . The relative positions of the moving load to left and right nodes of i th tunnel element are [20,34] ,…”

Section: Oceanography and Fisheries Open Access Journal Trainloads Modelingmentioning

confidence: 99%

“…Therefore, a study considering a real train model is very important for the realization of SFT. More sophisticated train models have been developed and the dynamic responses of bridges under these trains have been evaluated [18][19][20]. However, such models need to be implemented for the dynamic analysis of SFT to replicate the realistic structural responses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of the Dynamic Behaviors of Submerged Floating Tunnel Under a High-Speed Train Loading

Muhammad

2019

OFOAJ

View full text Add to dashboard Cite

Submerged floating tunnels (SFTs) are innovative structural solutions to waterway crossings and are more economical compared to the conventional structures such as cable-supported bridges, underground tunnels or immersed tunnels. The dynamic behaviors of SFT under real train loads is the primary design requirement of an SFT, However, it is not investigated using realistic train models. In this study, the China-star high-speed train is used to evaluate the dynamic displacements, internal forces and cable tensions of SFT. The tunnel is modeled by FEM, the cables are modeled by elastic catenary cables, and ocean waves and currents are modeled by Airy's wave theory. The SFT displacements, bending moments and cable tensions were significantly influenced by moving trains. The SFT experienced extreme vertical displacements and there was a large drop in the minimum cable tensions. The mooring cables were slacked both by magnitudes and speed of the moving trains, which should be avoided for the safety of SFT. This study recommends the additional buoyancies for the stability of SFT subjected to high speed trains.

show abstract

“…At time t the location of the k th moving load is located by x k . The relative positions of the moving load to left and right nodes of i th tunnel element are [20,34] ,…”

Section: Oceanography and Fisheries Open Access Journal Trainloads Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of the Dynamic Behaviors of Submerged Floating Tunnel Under a High-Speed Train Loading

Muhammad

2019

OFOAJ

View full text Add to dashboard Cite

show abstract

“…Jiantao et al [16] studied the simplified design method of transverse metal dampers for cable-stayed bridges. Mu et al [17] investigated the dynamic responses of a cable-stayed bridge under a high-speed train with random track irregularities and a vertical seismic load. Mouloud et al [18] summarized the influence of spatial variability of ground motion on nonlinear dynamic characteristics of cable-stayed bridges.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Seismic Response of Long‐Span Special Steel Truss Cable‐Stayed Bridge

Zeng

2022

Advances in Civil Engineering

View full text Add to dashboard Cite

Due to the small self-weight of the steel truss cable-stayed bridge with a single tower and a single cable plane, the torsional stiffness and wind stability of the structure are reduced. The arrangement of the deck type makes the mechanical properties of the cable-stayed bridge more complicated while reducing the cost and increasing the aesthetics. The effects of structural parameter variations and traveling wave effects on the seismic response of this steel truss cable-stayed bridge with a single tower and a single cable plane were investigated by the nonlinear time-history analysis method and nonuniform seismic analysis method. The results show that the displacement of the floating system under seismic action is larger than the other three systems, but its internal force is significantly smaller than the other three systems. The spectral characteristics and the duration of ground shaking have a greater influence on the maximum bending moment values corresponding to the height of the cable tower and the maximum axial force values of the main girder bars corresponding to the length of the bridge under earthquake action. The effect of steel truss girder stiffness parameter variations on structural internal forces of bridges and the effect of traveling wave effects on structural displacements of bridges in specific apparent wave velocity intervals do not exist universally.

show abstract

“…Under high-speed conditions, the train derailment form is variable, the mechanism of action is complex, and the nonlinear characteristics are more obvious [8]. The effects of side wind, earthquake, track bulge, or structural component failure on the operational safety of high-speed trains have been studied by many scholars [9][10][11][12][13][14]. However, research on the derailment process which is caused by over-speed on a curve is scarcer.…”

Section: Introductionmentioning

confidence: 99%

A Method of Predicting Critical Derailment Speed and Analysis of Derailment Process

Zhang

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

In order to study the derailment process and dynamic performance-changing rules of vehicles on a curved track, a method of calculating critical derailment speed is proposed, which is the progressive trial method. In terms of their theoretical basis and calculation results, compared with the two traditional methods (root locus method and limit cycle method) for calculating linear and nonlinear critical speed, the advantages of this method in studying derailment are proved, and its applicable conditions are explained. Taking CRH3 as an example, the critical derailment speed on different radius curves is calculated by the progressive trial method. At the critical derailment speed, the variation laws of wheel lifting, wheel–rail attack angle and dynamic index are analyzed. The discrete elastic contact analysis is used to observe the changes in the wheel–rail contact position and contact spot during derailment. The results show that with the increase in the curve radius and critical speed of derailment, the absolute values of lateral force, vertical forces and derailment coefficient increase at the same position of the line; when the impact angle between the front wheel of the front bogie and the rail increases to more than 0.06 rad, the train is in a critical derailment state.

show abstract

Dynamic responses of a cable-stayed bridge under a high speed train with random track irregularities and a vertical seismic load

Cited by 19 publications

References 22 publications

Assessment of the Dynamic Behaviors of Submerged Floating Tunnel Under a High-Speed Train Loading

Assessment of the Dynamic Behaviors of Submerged Floating Tunnel Under a High-Speed Train Loading

Investigation on Seismic Response of Long‐Span Special Steel Truss Cable‐Stayed Bridge

A Method of Predicting Critical Derailment Speed and Analysis of Derailment Process

Contact Info

Product

Resources

About