Results 21 to 30 of about 947 (221)
Numerical and Experimental Research on Identifying a Delamination in Ballastless Slab Track [PDF]
Materials, 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.
Guopeng Fan +4 more
openaire +2 more sources
Field Tests on Eco-Friendly Railway Precast Concrete Slab
Applied Sciences, 2020 This study focuses on evaluating the field performance of a newly developed eco-friendly precast concrete slab track structure for railway/subway systems in Seoul, South Korea.
Taehoon Koh, Moochul Shin
doaj +1 more source
Nonlinear responses of longitudinally coupled slab tracks exposed to extreme heat waves [PDF]
, 2023 Structural responses of longitudinally coupled slab tracks (LCSTs) under extreme heat waves (EHWs) and the adaptability of track reinforcement measures to cope with EHWs-related issues have been unprecedentedly investigated in this study.
Kaewunruen, Sakdirat +3 more
core +1 more source
Field Measurement and Energy Analysis of Ground‐Borne Vibration around High‐Speed Railway Viaduct
Shock and Vibration, Volume 2023, Issue 1, 2023., 2023 In order to investigate the vibration characteristics and propagation mechanism of ground vibrations induced by high‐speed train passing through the viaduct, a field experiment is carried out, and the measured data is deeply analyzed. Besides the independent time domain and frequency domain analysis, the continuous wavelet transform (CWT) is performed ...
Yanmei Cao +4 more
wiley +1 more source
Shock and Vibration, Volume 2023, Issue 1, 2023., 2023 Long‐short pile composite foundation (PC‐LSPCF) composed of part‐screw pile and cement‐soil compaction pile is a new railway foundation treatment method, which has been widely used in high‐speed railway construction projects in China. To explore the dynamic characteristics and deformation characteristics of railway PC‐LSPCF under long‐term train loads,
Zhao-rong Zhu +6 more
wiley +1 more source
Influence of mixture composition on fresh concrete workability for ballastless track slabs [PDF]
E3S Web of Conferences, 2020 There are several factors that affect the fresh concrete workability: water demand and composition of Portland cement, properties of fine and coarse aggregates, presence of superplasticizer and others admixtures, etc. Influence of quantity and fineness of ground quartz additives as well as polycarboxylate-based superplasticizer amount on workability of
Kazanskaya Liliya, Smirnova Olga
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Effect of Track Support Structures on Friction‐Induced Vibrations of Wheelset‐Track Systems
Shock and Vibration, Volume 2023, Issue 1, 2023., 2023 The aim of the present investigation is to study the effect of track support structures on the metro 5th to 8th‐order out‐of‐round (OOR) wheel caused by friction‐induced vibrations. Three finite element models of metro‐leading wheelset‐track systems with three types of track support structures were established.
Hua Fu +4 more
wiley +1 more source
Journal of Nanomaterials, Volume 2022, Issue 1, 2022., 2022 At present, the world‐wide heavy‐haul transportation technology of cargo trains has developed rapidly. Heavy‐haul railway transportation has received extensive attention due to its large capacity, high efficiency, and low transportation costs. In order to understand the role that ferroelectric materials can play in the dynamic response of a heavy‐duty ...
Xiaotian Hao, Hailong Wang, Awais Ahmed
wiley +1 more source
Applied Sciences, 2021 In view of the vertical deformation of CRTS III slab ballastless track of high-speed railways under the action of ambient temperature, a simulation model of the temperature field and vertical deformation of CRTS III slab ballastless track was developed ...
Junzhao Zhou +3 more
doaj +1 more source
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 A ballastless track is susceptible to damage and even failure of structural components under the long‐term effects of extremely high temperatures. In this paper, considering the influence of different constraint boundaries, a 1 : 4 scaled model of a ballastless track‐bridge structural system was produced and placed in a large‐sized environmental ...
Anxiang Song +5 more
wiley +1 more source