نتایج جستجو برای: subway tunnels

تعداد نتایج: 6822  

Journal: :Bulletin of Earthquake Engineering 2022

Abstract On October 30, 2020 14:51 (UTC), a moment magnitude (M w ) of 7.0 (USGS, EMSC) earthquake occurred in the Aegean Sea north island Samos, Greece. Turkish and Hellenic geotechnical reconnaissance teams were deployed immediately after event their findings are documented herein. The predominantly observed failure mechanism was that earthquake-induced liquefaction its associated impacts. Su...

2012
A. I. Garber

To every d-dimensional polytope P with centrally symmetric facets one can assign a “subway map” such that every line of this “subway” contains exactly the facets parallel to one of the ridges of P . The belt diameter of P is the maximum number of subway lines one needs to use to get from one facet to another. We prove that the belt diameter of a d-dimensional space-filling zonotope does not exc...

2007
Feng-Dong Yuan Shi-Jun You

To obtain the velocity and temperature field of subway station and the optimized ventilation mode of subway side-platform station, this paper takes the evaluation and optimization of the ventilation for subway side-platform station as main line, builds three dimensional models of original and optimization design of the existed and rebuilt station. And using the two-equation turbulence model as ...

2014
Liya Yao Lishan Sun Wuhong Wang Hui Xiong Huimin Niu

Service capability and matching degree of transfer facilities are directly related to the operational efficiency and safety of a subway station. Owing to differences in planning and construction, the transfer subway stations in developing countries have some defects in facility size and serviceability, which cause a decline in service performance, operation efficiency, and security level. In or...

2017
Miaoyi Li Lei Dong Zhenjiang Shen Wei Lang Xinyue Ye

A transit ridership study is an essential part of sustainability, and can provide a deep understanding of people’s travel patterns for efficient transportation development and urbanization. However, there is a lack of empirical studies comparing subway and taxi services, and their interactions within a city, that is to say, the interdependent transportation networks. Incorporating new data, thi...

2017
Donguk Lee Gibbeum Kim Woojae Han

BACKGROUND AND OBJECTIVES Although mass transit systems are convenient and efficient for urban people, little attention has been paid to the potential hearing hazard from their noise. The purpose of the current study was to measure and analyze levels of subway interior noise at peak commuter times and to provide information about commuters' daily dose of noise exposure. MATERIALS AND METHODS ...

2014
A. Borrmann T. H. Kolbe A. Donaubauer H. Steuer J. R. Jubierre M. Flurl Leonhard Obermeyer

The planning of large infrastructure facilities such as inner-city subway tracks requires the consideration of widely differing scales, ranging from the kilometer scale for the general routing of the track down to the centimeter scale for detailed design of connection points. On the one hand this implies the utilization of both, Geographic Information Systems (GIS) as well as Building Informati...

Journal: :Frontiers in Earth Science 2023

In the process of constructing double-track subway tunnels in shallow buried loess areas, interaction is significantly influenced by net distance and cross-section size, which challenging to control surface settlement. Therefore, settlement prediction essential while areas. The paper analyzed law areas through theoretical research numerical simulation. results show that with decrease distance, ...

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