Results 101 to 110 of about 21,361 (314)
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
Cause Analysis of Rail Corrugation in Metro Lines Based on System Vibration Characteristics
Chinese Journal of Mechanical EngineeringThe mechanism of rail corrugation remains unclear, and the research methods require improvement. The vibration characteristics represent the system’s external manifestations, but a comprehensive analysis is still lacking.
Zhiqiang Wang, Zhenyu Lei, Yanyun Luo
doaj +1 more source
Entropy, 2019 The fault response signals of an axle-box bearing of a rail vehicle have strongly non-linear and non-stationary characteristics, which can reflect the operating state of the running gears.
Xiaochao Wang +3 more
doaj +1 more source
RAILROADS IN THE CITY: OVERLOOKED RAIL TRANSIT OPPORTUNITIES [PDF]
, 2001 Transportation officials today are under pressure to deliver attractive rail transit at affordable prices. Although rail rights-of-way are often the least costly on a unit basis, planners frequently prefer other alignments that can better serve major ...
Allen, J G
core +1 more source
Deep Underground Science and Engineering, EarlyView.This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh +12 more
wiley +1 more source
PlaNext, 2016 The city of Honolulu, Hawaii is currently planning and developing a new rail transit system. While Honolulu has supportive density and topography for rail transit, questions remain about its ability to effectively integrate urban design and accessibility across the system.
openaire +1 more source
Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
wiley +1 more source
Analysis on Cost of Urban Rail Transit [PDF]
, 2012 Nowadays, urban rail transit has been the most effective solution to the traffic congestion because of its fast, efficient, safe, energy saving and environmental protecting characteristics.
Li, Wenxing, Yin, Shuai
core +1 more source
Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This study investigated the spatial patterns and development mechanisms of urban underground space (UUS) in Shanghai using underground points of interest data. It revealed distinct development mechanisms between the main city and suburbs, highlighting the need for differentiated UUS planning and policies to optimize underground space resources ...
Chenxiao Ma +3 more
wiley +1 more source