Results 71 to 80 of about 204,808 (307)
Deep Underground Science and Engineering, EarlyView.This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu +6 more
wiley +1 more source
Fatigue analysis of catenary contact wires for high speed trains [PDF]
, 2011 The fatigue fracture is one of the most critical failures which may occur on the high speed network because it is undetectable and it has a huge impact on traffic disruption.
BALMES, Etienne +3 more
core
Deep Underground Science and Engineering, EarlyView.Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei +6 more
wiley +1 more source
AGAINTS AND FOR THE HIGH SPEED TRAINS' MULTIMPLICATION [PDF]
In this exposure we intend to make visible the situation in which global warming is given by road and air transport, how could be revitalized railways, and how high speed trains could become a preferred mode of transport.
Baciu Adrian, Benea Ciprian
core
Safety-related issues for high-speed railway bridges [PDF]
, 2011 Railway bridges have specific requirements related to safety, which often are critical aspects of design. In this paper the main phenomena are reviewed, namely vertical dynamic effects for impact effect of moving loads and resonance in high-speed ...
Goicolea Ruigómez, José María
core
A QoS-Aware Scheduling Algorithm for High-Speed Railway Communication System
, 2014 With the rapid development of high-speed railway (HSR), how to provide the passengers with multimedia services has attracted increasing attention. A key issue is to develop an effective scheduling algorithm for multiple services with different quality of
Ai, Bo +3 more
core +1 more source
Critical expansion points: Mechanical signs of surrounding rock instability
Deep Underground Science and Engineering, EarlyView.This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen +4 more
wiley +1 more source
Effect of Cement Asphalt Mortar Debonding on Dynamic Properties of CRTS II Slab Ballastless Track
Advances in Materials Science and Engineering, 2014 The debonding of cement emulsified asphalt mortar (CA mortar) is one of the main damage types in China railway track system II slab ballastless track.
Ping Wang, Hao Xu, Rong Chen
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao +5 more
wiley +1 more source
Robustness of optimal inter-city railway network structure in Japan against alternative population distributions [PDF]
It takes long time and huge amount of money to construct inter-city railway network. Careful demand forecasting and rational service planning are therefore required.
Makoto Okumura, Makoto Tsukai
core