Results 41 to 50 of about 29,036 (116)

Groundwater Recovery and Associated Land Deformation Along Beijing–Tianjin HSR: Insights from PS-InSAR and Explainable AI

Applied Sciences
With sub-millimeter deformation capture capability, InSAR technology has become an important tool for surface deformation monitoring. However, it is still limited by interferences like land subsidence and bridge deformation in long-term linear ...
Shaomin Liu, Mingzhou Bai
doaj   +1 more source

Application of novel fabricated ballastless track on new designed long-span urban bridges

Advances in Bridge Engineering
Fabricated ballastless track has witnessed increasingly wide application in large-span bridges of municipal railways. The current ballastless track standard is applicable to bridges with a main span of 200 m to 400 m. For the main span is longer than 400 
Yi Yang, Tao Xin, Qiuyi Li, Sen Wang, Chuanqing Dai, Chao Kong   +5 more
doaj   +1 more source

Deformation pressure calculation method for shallow four-track high-speed rail tunnels: A field investigation and theoretical approach

Alexandria Engineering Journal
Conventional calculation methods for rock pressure, typically designed for deep tunnels, are ill-suited for shallow four-track high-speed rail (HSR) tunnels owing to their expansive span, more elongated cross-section, and the intricate construction ...
Jianfei Ma, Shaohui He, Xiabing Liu, Jiaxin He   +3 more
doaj   +1 more source

Vertical Vibration Characteristic Analysis of Subway Train Height-Adjustable Slab Ballastless Track in Ground Fissure Environment

Chengshi guidao jiaotong yanjiu
[Objective] Limited by engineering conditions such as the reserved connecting line on the hanging wall of the ground fissure, the existing ballastless track structure cannot meet the height adjustment function of subway track structure under large ground
KANG Xiaoli
doaj   +1 more source

Hybrid DEM-FDM Modelling of Ballasted Railway Track Performance

Infrastructures
The performance of ballasted railway tracks under cyclic loading is a critical issue in urban railway systems, where high traffic frequency and geometric constraints accelerate track degradation, leading to the accumulation of plastic deformations that ...
Nohemí Olivera, Juan Manuel Mayoral
doaj   +1 more source

Obliczanie Trwałych Pionowych Deformacji Toru w Zależności od Typu Nawierzchni Kolejowej

Engineering Transactions, 1971
The source of deformations of a railway track are stable deformations of the subsurface. To a large degree these depend on the rigidity of the rail, which is the most expensive element of the track.
S. Bonkowicz-Sittauer
doaj  

Operational analysis of long-span steel box self-anchored track suspension bridge

Journal of Low Frequency Noise, Vibration and Active Control
The long-span steel box self-anchored track suspension bridge is prone to deformation under long-term train and temperature loads, which seriously affects the structural safety and operation performance.
Xiaogang Li, Xiangsheng Huang, Peng Ding, Mangmang Gao, Minglin Zhou, Xiang Li   +5 more
doaj   +1 more source

Research on structural vertical stiffness evaluation of track-specific suspension bridge under the action of the no-load first train

Journal of Low Frequency Noise, Vibration and Active Control
The track-specific bridge has the characteristics of a large volume of passenger traffic, narrow transverse width, and large excitation. The long-term and high-frequency operating conditions put forward strict requirements for the safety and comfort of ...
Xiaogang Li, Sihan Cen, Peng Ding, Xiaohu Chen, Xiangsheng Huang, Haoran Luo   +5 more
doaj   +1 more source

Terrestrial Laser Scanning as a Part of Railway Comprehensive Diagnostics

Infrastructures
A comprehensive diagnosis of the railway line aims to control its actual structure and geometric arrangement. Such railway inspections can help detect potential track deformation caused by operational loads and climatic effects.
Jana Izvoltova, Stanislav Hodas, Jakub Chromčák, Daša Smrčková   +3 more
doaj   +1 more source

Puckering vs. Localisation: Contrasting Nanoscale Lithography and Wear Mechanisms in MoS₂ and Graphene on SiO₂. [PDF]

Materials (Basel)
Dašić M, Stanković I.
europepmc   +1 more source