Results 21 to 30 of about 673,431 (151)

Changes in Material Properties and Damage Mechanism of Plate Ballastless Track Under Fire and High Temperature

open access: yesBuildings
The service status of rail, fasteners and track slabs is the key determinant of whether the ballastless track is ready for traffic after a fire. The track slab rail support bolt anchoring performance and the shoulder service performance damaged by fire ...
Hao Jin   +7 more
doaj   +2 more sources

Experimental Study of the Influence of Extremely Repeated Thermal Loading on a Ballastless Slab Track-Bridge Structure

open access: yesApplied Sciences, 2020
To study the initiation and expansion of the interlayer gap of the China Railway Track System Type II (CRTS-II) ballastless slab track structure under the action of repeated thermal loading as well as the influence of the interlayer gap on the ...
Lingyu Zhou   +6 more
doaj   +2 more sources

Effect of temperature gradient-induced periodic deformation of CRTS Ⅲ slab track on dynamic responses of the train-track system [PDF]

open access: yesRailway Sciences
Purpose – Temperature is an important load for a ballastless track. However, little research has been conducted on the dynamic responses when a train travels on a ballastless track under the temperature gradient.
Wang Jijun   +3 more
doaj   +3 more sources

Vertical Nonlinear Temperature Gradient and Temperature Load Mode of Ballastless Track in China

open access: yesMathematics, 2022
In the process of heat exchange with the external environment, the internal temperature of ballastless track structure presents a nonlinear distribution.
Bin Yan   +3 more
doaj   +2 more sources

Application Study on Fiber Optic Monitoring and Identification of CRTS-II-Slab Ballastless Track Debonding on Viaduct

open access: yesApplied Sciences, 2021
China Railway Track System (CRTS)-II-slab ballastless track is a new type of track structure, and its interlayer connection state is considerably important for the operation safety and ride comfort of high-speed trains. However, the location and multiple
Gaoran Guo   +3 more
doaj   +2 more sources

Laboratory Investigation of the Temperature-Dependent Mechanical Properties of a CRTS-Ⅱ Ballastless Track-Bridge Structural System in Summer

open access: yesApplied Sciences, 2020
To study the mechanical properties of the China Railway Track System type II (CRTS-II) ballastless slab track structure, a 1/4-scale specimen of a CRTS-II slab ballastless track-32-m standard prefabricated simply supported box girder bridge with three ...
Lingyu Zhou   +5 more
doaj   +2 more sources

Temperature gradient of ballastless track in large daily temperature difference region and its influence on dynamic responses of vehicle-track-bridge system

open access: yesAlexandria Engineering Journal, 2023
Due to the large daily temperature difference on the ultra-high altitude plateau of China, the actual vertical temperature gradient (TG) of ballastless track may exceed the design value in the Code. The temperature monitoring platform of the double-block
Zhen Sun, Ping Lou, Xinde Huang
doaj   +2 more sources

Dynamic Response of Train–Ballastless Track Caused by Failure in Cement–Asphalt Mortar Layer

open access: yesBuildings
Cement–asphalt (CA) mortar voids in earth’s structure are prone to inducing abnormal vibrations in vehicle and track systems and are more difficult to recognize.
Xicheng Chen, Yanfei Pei, Kaiwen Liu
doaj   +2 more sources

Numerical Investigation of Interlaminar Stress of CRTS II Slab Ballastless Track Induced by Creep and Shrinkage of Concrete. [PDF]

open access: yesMaterials (Basel), 2022
The secondary development of ABAQUS was carried out to calculate the shrinkage and creep of concrete, and a finite element model of the China Railway Track System (CRTS) II slab ballastless track was established.
Zheng Z   +9 more
europepmc   +2 more sources

Numerical and Experimental Research on Identifying a Delamination in Ballastless Slab Track. [PDF]

open access: yesMaterials (Basel), 2019
This paper aims to adopt the total focusing method (TFM) and wavenumber method for characterizing a delamination in ballastless slab track. Twelve dry point contact (DPC) transducers located at the upper surface of the slab track compose a linear array ...
Fan G, Zhang H, Zhu W, Zhang H, Chai X.
europepmc   +2 more sources

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