Results 31 to 40 of about 4,912 (223)

Safety Envelope Management Method for Marshaled Trains Based on Time Delay Protection

Chengshi guidao jiaotong yanjiu
[Objective] In flexible marshaled trains, the communication delay between the master railcar, subordinate railcar and ZC (zone controller) exhibits asynchrony, leading to potential issues such as overlapping, misalignment, and discontinuity in the safety
Peng GENG, Peng ZHAO, Yuwei NIE
doaj   +1 more source

An Adaptive Parameterized Domain Mapping Method and Its Application in Wheel–Rail Coupled Fault Diagnosis for Rail Vehicles

Sensors, 2023
The rapid development of cities in recent years has increased the operational pressure of rail vehicles, and due to the characteristics of rail vehicles, including harsh operating environment, frequent starting and braking, resulting in rails and wheels ...
Zihang Xu, Jianwei Yang, Dechen Yao, Jinhai Wang, Minghui Wei   +4 more
doaj   +1 more source

RENEWAL MANAGEMENT FRAMEWORK FOR URBAN RAIL TRANSIT ASSETS

Transport, 2019
Decision-making surrounding asset renewal is essential for the efficient use of renewal resources and safe operation of urban rail transit. In this study, major problems in the current management of urban rail industries in countries with the same problems as those in China were analysed, and in response, a renewal management framework based on service
Bai, Wenfei, Liu, Rengkui, An, Ru, Wang, Futian, Sun, Quanxin   +4 more
openaire   +3 more sources

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

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, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

Dynamic Characteristics and Fault Mechanism of the Gear Tooth Spalling in Railway Vehicles under Traction Conditions

Applied Sciences, 2023
Gear tooth spalling is one of the inevitable fault modes in the long-term service of the traction transmission system of railway vehicles, which can worsen the dynamic load of the rotating mechanical system and reduce the operating quality. Therefore, it
Yunlei Lin, Junbo Li, Peixuan Chen, Yongjie Su, Jinhai Wang   +4 more
doaj   +1 more source

Unveiling spatial heterogeneity in urban underground space development patterns and mechanisms for differentiated planning: A points of interest‐based study of Shanghai

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, Fangle Peng, Yongkang Qiao, Yunhao Dong   +3 more
wiley   +1 more source

Characteristics of Pedestrian Following Behavior in One-way Passage of Urban Rail Transit Stations Based on Pedestrian Trajectory Data

Chengshi guidao jiaotong yanjiu
Objective Improving the service level to the passengers and ensuring safety are the core purpose of the facility layout and operation management of urban rail transit station.
FANG Yong, WEI Wanxu, HU Hua, HAO Yanxi, LIU Zhigang   +4 more
doaj   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Characteristics of Passenger Stagnation Behavior Spectrum Based on Monitoring Video Data at Ticket Gate in Urban Rail Transit Stations

Chengshi guidao jiaotong yanjiu
[Objective] To scientifically set up the ticket gate, improve its actual passing capacity, and reduce the congestion risk caused by abnormal stagnation of the passengers, it is necessary to study the characteristics of passenger stagnation behavior ...
Qi SHI, Yong FANG, Hua HU, Zhigang LIU, Wanxu WEI   +4 more
doaj   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source