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Research on crack detection method of ballastless track slab based on infrared thermometer
Infrared Physics & Technology, 2021Abstract It is a trend that the crack detection method of ballastless track slab changes from manual detection to high-speed vehicle detection. A crack detection method based on an infrared thermometer is presented in this paper. The basic principle of this method is introduced.
Shuanglong Cui +3 more
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Effect of Slab Void on Mechanical Properties of Longitudinal Connected Ballastless Track
ICTE 2011, 2011According to structure characteristics of longitudinal connected ballastless track on subgrade and the theory of beam and plate on elastic foundation, three dimensional finite element analysis model of train load and longitudinal connected ballastless track system was derived.
Yong Zeng, Xueyi Liu
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Properties of the Concrete for the Slab Ballastless Track of CRTS III
Materials Science Forum, 2017Experimental research was conducted using concrete produced by adding the polycarboxylic-type water-reducing agent. The cement, sand, aggregates, fillers and water-reducing agent were used as the important raw materials for the concrete. Then the following properties of the concrete were analyzed: compressive strength, elastic modulus and frost ...
Xiao Rong Li +4 more
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Behavior of High-Speed Railway Ballastless Track Slabs Using Reactive Powder Concrete Materials
Journal of Transportation Engineering, 2016AbstractThe precast ballastless track slab has been widely applied in the Chinese high-speed railway system. However, the current slabs, made of normal concrete (NC) materials and designed in a “plane” structural configuration, were found vulnerable to the train loads and temperature effects.
Jian Yang +3 more
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Mud Pumping in Ballastless Slab Track of High-Speed Railway and Its Remediation
2021Mud pumping is an increasing subgrade distress in ballastless slab track of high-speed railway, which heavily affects the driving comfort and even threatens the driving safety. However, the existing researches mostly focused on the water-induced distress in ballasted railway, and little attention was paid on the mud pumping in ballastless slab track ...
Zhangbo Wan +3 more
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Temperature Field Analysis of CRTS-II Ballastless Track Slab Structure on Soil Subgrade
Applied Mechanics and Materials, 2014Temperature changes have a significant impact on the CRTS-II track structure in Beijing-Shanghai high-speed railway which has longitudinally connected type. In this paper temperature fields of ballastless track superstructure are simulated based on heat transfer theory and subroutine of ABAQUS that solar radiation DFLUX and ambient temperature FILM ...
Lei Zhao, Lu Sun, Tong Jiang Fan
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Physical modeling of train-induced mud pumping in substructure beneath ballastless slab track
Transportation Geotechnics, 2020Abstract This paper identifies the fundamental driving factors for the mobilization of mud pumping in railway substructure beneath ballastless slab track. Physical model tests on a compacted gravel layer overlying a permeable layer were performed under different conditions in terms of fines content, moisture (i.e., unsaturated, saturated with and ...
Tengfei Wang +4 more
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Design method of pile-slab structure roadbed of ballastless track on soil subgrade
Journal of Central South University, 2013Pile-slab structure roadbed is a new form of ballastless track for high speed railway. Due to lack of corresponding design code, based on the analysis of its structure characteristics and application requirements, it is proposed to carry out load effect combination according to ultimate limit state and serviceability limit state, and the most ...
Yong-xiang Zhan +2 more
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Jordan Journal of Civil Engineering, 2023
Temperature has a significant impact on the structural performance of the China Railway Track System (CRTS) Ⅱ slab ballastless track-bridge and the structure is susceptible to fatigue damage under long-term loading. Therefore, it is crucial to conduct cyclic-loading test on the track-bridge structure to reveal the evolution of its mechanical properties
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Temperature has a significant impact on the structural performance of the China Railway Track System (CRTS) Ⅱ slab ballastless track-bridge and the structure is susceptible to fatigue damage under long-term loading. Therefore, it is crucial to conduct cyclic-loading test on the track-bridge structure to reveal the evolution of its mechanical properties
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Wireless Monitoring of Ballastless Track Slab Deformation for High-Speed Railway
IEEE Transactions on Instrumentation and Measurement, 2022Ling Deng +5 more
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