Study on the restoring force model for the high-speed railway CRTS III Slab Ballastless Track

Liu, Lili; Jiang, Lizhong; Zhou, Wangbao; Yu, Jian; Peng, Kang; Zuo, Yongjian

doi:10.1007/s43452-022-00472-y

Cited by 7 publications

(3 citation statements)

References 39 publications

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“…The difference method is used to achieve forward iterative solution of the tension of the cable-stayed system during the construction period. The tension 𝑡 1 for the first tensioning is expressed as [10]:…”

Section: Creep Control and Construction Optimizationmentioning

confidence: 99%

Creep Control and Construction Technology for Laying Ballastless Tracks on a 420m Ultra Long Span High-speed Railway Cable-stayed Bridge

2023

jceup

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Ballastless track plays a crucial role in railway transportation. Traditional construction techniques are difficult to effectively ensure the stability and safety of ballastless track structures, and cannot achieve effective creep control. In order to improve the effect of creep control and enhance the quality of ballastless track laying in cable-stayed bridges, this paper took the ballastless track laying project of a 420m ultra long span high-speed railway cable-stayed bridge as the object, and conducted in-depth research on its creep control and construction technology. This article first analyzed the factors affecting the creep of ballastless tracks, and then, based on this, ensured the stability and creep control of the cable-stayed bridge structure through tension calculation and cable force adjustment. Finally, based on the calculation results, construction optimization was carried out. This article conducted experimental analysis from two levels: structural safety assessment and creep measurement, to confirm its efficacy. The findings demonstrated that over the observation period, the three randomly chosen control locations' average cumulative changes in the horizontal plane coordinates did not surpass 1 millimeter. The article's conclusion suggested that the creep control and construction technology could raise the caliber and standard of rail transportation while also assisting in enhancing the stability and safety of the ballastless track of the 420-meter ultra long span high-speed railway cable-stayed bridge.

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Section: Creep Control and Construction Optimizationmentioning

confidence: 99%

Creep Control and Construction Technology for Laying Ballastless Tracks on a 420m Ultra Long Span High-speed Railway Cable-stayed Bridge

2023

jceup

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“…The third boundary condition is a constant temperature gradient of 0.03˚C/m. This is applied at the bottom of the numerical model, as shown in Eq (10) [26,28]:…”

Section: Plos Onementioning

confidence: 99%

“…Their study showed that the thawing inter-layer, slope effect, and thawing depth had the significant impact on the uneven settlement. Liu [10], and Zhao [11] explored the influence of subgrade parameters and freeze-thaw cycles on the mechanism of railway settlement based on the water-heat-mechanical response model. Vladimir and Elena [12] had successfully predicted the response of settlement in the Russian northern ports based on the numerical simulation method.…”

Section: Introductionmentioning

confidence: 99%

Settlement on asphalt concrete pavement in permafrost regions under the dynamic load of aircraft

Liu

Chen

2023

PLoS ONE

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The settlement in permafrost regions has a significant effect on the safety of the aircraft. Therefore, a numerical model of asphalt concrete pavement and subgrade in permafrost regions is proposed and verified by comparing with previous studies. Numerical models under the dynamic load of aircraft are used to analyze the settlement nephogram, time-dependent curve, and settlement curve. Results show that the influences of different parameters on settlements decrease slowly at the depth of 0–1.45m, then decrease quickly at the depth of 1.45-2m, finally tend to be stable. The peaks of settlements increase with the growth of international roughness index, taxiing speed, and aircraft’s weight. The settlement increases little when the international roughness index is more than 3. The settlement varies significantly when the taxiing speed is from 30m/s to 70m/s. The study provides a theoretical basis for the construction and maintenance of asphalt concrete pavement and subgrade in permafrost.

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Experimental Study on CRTS III Ballastless Track Based on Quasi-distributed Fiber Bragg Grating Monitoring

Zhang,

Xie,

Wang

et al. 2024

Iran J Sci Technol Trans Civ Eng

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Study on the restoring force model for the high-speed railway CRTS III Slab Ballastless Track

Cited by 7 publications

References 39 publications

Creep Control and Construction Technology for Laying Ballastless Tracks on a 420m Ultra Long Span High-speed Railway Cable-stayed Bridge

Creep Control and Construction Technology for Laying Ballastless Tracks on a 420m Ultra Long Span High-speed Railway Cable-stayed Bridge

Settlement on asphalt concrete pavement in permafrost regions under the dynamic load of aircraft

Experimental Study on CRTS III Ballastless Track Based on Quasi-distributed Fiber Bragg Grating Monitoring

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