Advanced Rail Geotechnology Ballasted Track

Author: Buddhima Indraratna
Editor: CRC Press
ISBN: 0203815777
File Size: 18,61 MB
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Ballast plays a vital role in transmitting and distributing train wheel loads to the underlying sub-ballast and subgrade. Bearing capacity of track, train speed, riding quality and passenger comfort all depend on the stability of ballast through mechanical interlocking of particles. Ballast attrition and breakage occur progressively under heavy cyc

Analytical Methods In Petroleum Upstream Applications

Author: Cesar Ovalles
Editor: CRC Press
ISBN: 1138001481
File Size: 60,67 MB
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Effective measurement of the composition and properties of petroleum is essential for its exploration, production, and refining; however, new technologies and methodologies are not adequately documented in much of the current literature. Analytical Methods in Petroleum Upstream Applications explores advances in the analytical methods and instrumentation that allow more accurate determination of the components, classes of compounds, properties, and features of petroleum and its fractions. Recognized experts explore a host of topics, including: A petroleum molecular composition continuity model as a context for other analytical measurements A modern modular sampling system for use in the lab or the process area to collect and control samples for subsequent analysis The importance of oil-in-water measurements and monitoring The chemical and physical properties of heavy oils, their fractions, and products from their upgrading Analytical measurements using gas chromatography and nuclear magnetic resonance (NMR) applications Asphaltene and heavy ends analysis Chemometrics and modeling approaches for understanding petroleum composition and properties to improve upstream, midstream, and downstream operations Due to the renaissance of gas and oil production in North America, interest has grown in analytical methods for a wide range of applications. The understanding provided in this text is designed to help chemists, geologists, and chemical and petroleum engineers make more accurate estimates of the crude value to specific refinery configurations, providing insight into optimum development and extraction schemes.

Geotechnics For Transportation Infrastructure

Author: Ravi Sundaram
Editor: Springer
ISBN: 9811367019
File Size: 39,98 MB
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This book presents selected papers from the International Symposium on Geotechnics for Transportation Infrastructure (ISGTI 2018). The research papers cover geotechnical interventions for the diverse fields of policy formulation, design, implementation, operation and management of the different modes of travel, namely road, air, rail and waterways. This book will be of interest to academic and industry researchers working in transportation geotechnics, as also to practicing engineers, policy makers, and civil agencies.

Track Geotechnology And Substructure Management

Author: Ernest Theodore Selig
Editor: Thomas Telford
ISBN: 9780727720139
File Size: 43,49 MB
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This comprehensive study provides practical advice and guidance on the important topics of rail transport and ground engineering, the use of which will result in optimum quality with the minimum maintenance effort and the most economical use of resources. The authors have synthesized all of their international knowledge and experience in this field, and produced, for the first time, a definitive guide for the design, construction, maintenance and renewal of railway track as they relate to geotechnology.

Design And Construction Of Pavements And Rail Tracks

Author: Antonio Gomes Correia
Editor: CRC Press
ISBN: 0203937546
File Size: 28,44 MB
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Design and Construction of Pavements and Rail Tracks - Geotechnical Aspects and Processed Materials is a compilation of selected contributions produced between 2002 and 2005 by the International Committee TC3 - Geotechnics of Pavements of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE), a committee dedicated to gat

Railway Track And Structures

Author:
Editor:
ISBN:
File Size: 13,75 MB
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Railway Engineering

Author: Vassilios A. Profillidis
Editor: Ashgate Pub Limited
ISBN:
File Size: 62,83 MB
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Covering issues ranging from rail's position in the transport market to track design and train dynamics, this updated and revised edition provides a concise and useful synopsis of current railway technology and scientific analysis.

Canadian Geotechnical Journal

Author:
Editor:
ISBN:
File Size: 24,99 MB
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Manufacturing Processes And Systems

Author: Xianghua Liu
Editor: Trans Tech Publications Ltd
ISBN: 3038135534
File Size: 52,23 MB
Format: PDF, Mobi
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This two-volume set comprises a collection of 350 peer-reviewed papers which cover the latest advances in, and applications of, computer numerical control systems, operations planning, geometric dimensioning and tolerancing, quality systems, basic machine-tool elements, process automation, operator-machine systems, cost estimating, metrology and testing, and many similar topics.

Railway Management And Engineering

Author: Vassilios A. Profillidis
Editor: Ashgate Publishing, Ltd.
ISBN: 9780754648543
File Size: 49,89 MB
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This book takes a scientific approach to railways, and is intended to be of use to railway managers, economists and engineers, consulting economists and engineers, students of schools of engineering, transportation and management. This revised, updated and expanded edition is still rooted in engineering but now provides a much broader context, including policy and legislation, planning and management, and forecasting demand.

Geotechnical Abstracts

Author:
Editor:
ISBN:
File Size: 53,79 MB
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Siviele Ingenieur In Suid Afrika

Author:
Editor:
ISBN:
File Size: 67,82 MB
Format: PDF
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The Eighties

Author: Canadian Institute of Guided Ground Transport
Editor:
ISBN:
File Size: 16,53 MB
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Track Train Dynamics And Design

Author: Gerald James Moyar
Editor: Pergamon
ISBN:
File Size: 29,31 MB
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Numerical Analysis Of Soil Behavior And Stone Columns Effects On The Railway Track

Author: Mojtaba Shahraki
Editor:
ISBN:
File Size: 78,49 MB
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Railway systems are highly competitive compared with other means of transportation because of their distinct advantages in speed, convenience and safety. Therefore, the demand for railway transportation is increasing around the world. Constructing railway tracks and related engineering structures in areas with loose or soft cohesive subgrade usually leads to problems, such as excessive settlement, deformation and instability. Several remedies have been proposed to avoid or reduce such problems, including the replacement of soft soil and the construction of piles or stone columns. This thesis aims to expand the geotechnical knowledge of how to improve subgrade ballasted railway tracks, using stone columns and numerical modeling for the railway infrastructure. Three aspects are considered: i) railway track dynamics modeling and validation by field measurements, ii) modeling and parametric studies on stone columns, and iii) studies on the linear and non-linear behavior of stone columns under the dynamic load of trains. The first step of this research was to develop a reliable numerical model of a railway track. The finite element method in a time domain was used for either a 2D plane strain or 3D analysis. Individual methods for modeling a train load in 2D and 3D were implemented and are discussed in this thesis. The developed loading method was validated with three different railway tracks using obtained vibration measurements. Later, these numerical models were used to analyze the influence of stone column length and train speed in the stress field. The performance of the treated ground depends on various parameters, such as the strength of stone columns, spacing, length and diameter of the columns. Therefore, the second step was devoted to a parameter study of stone columns as a unit cell with an axisymmetric condition. The results showed that even short stone columns were effective for settlement reduction, and area of replacement was the main influential parameter in their performance. The third part of this thesis focuses on a hypothetical railway-track response to the passage of various train speeds and the influence of stone-column length. The stress-strain response of subgrade is analyzed under either an elastic-perfectly plastic or advanced constitutive model. The non-linear soil response in the finite element method and the impact of train speed and stone column length on railway tracks are also evaluated. Moreover, the reductions of induced vibration - in both a horizontal and a vertical direction - after improvement are investigated.

Publikasjon Norges Geotekniske Institutt

Author: Norges geotekniske institutt
Editor:
ISBN:
File Size: 25,18 MB
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Includes the institute's report, 1953-

Jane S World Railways

Author:
Editor:
ISBN:
File Size: 71,33 MB
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Bulletin American Railway Engineering Association

Author: American Railway Engineering Association
Editor:
ISBN:
File Size: 72,14 MB
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Vols. for 19 - include the directory issue of the American Railway Engineering Association.

Geotechnical Engineering Handbook

Author: Braja M. Das
Editor: J. Ross Publishing
ISBN: 1932159835
File Size: 76,18 MB
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The Geotechnical Engineering Handbook brings together essential information related to the evaluation of engineering properties of soils, design of foundations such as spread footings, mat foundations, piles, and drilled shafts, and fundamental principles of analyzing the stability of slopes and embankments, retaining walls, and other earth-retaining structures. The Handbook also covers soil dynamics and foundation vibration to analyze the behavior of foundations subjected to cyclic vertical, sliding and rocking excitations and topics addressed in some detail include: environmental geotechnology and foundations for railroad beds.