Critical Logistics Support Enables Fast Track Construction for High Speed Rail

2010 ◽  
Author(s):  
James R. Blaze ◽  
Jay Gowan ◽  
Stephen Byers
Keyword(s):  
Construction Management ◽  
Construction Projects ◽  
High Speed ◽  
Fast Track ◽  
State Of The Art ◽  
Economic Advantage ◽  
High Speed Rail ◽  
Operational Costs ◽  
Construction Zones ◽  
Made In

Paper and PowerPoint presentation format will describe process for much faster logistics and construction management of new high speed track construction and improvement of existing FRA track from FRA Class 4 to Class 5 and Class 6 standards on existing freight railway lines. This process involves an integration of the long materials supply chain together with rapid process state of the art construction machines. These machines have been used in both European and Chinese high speed construction projects. Huge gains in new track kilometers and miles per day have been made in the last decade on the machinery side of the equation. The authors will show several case studies. The critical key to these production rates has been in the integration of materials ordering and prepositioning. The economic advantage is that track time construction windows that delay other passing trains can be reduced at tremendous savings in service and operational costs to the operators already providing service in these new high speed corridors and construction zones. Examples and calculations are shown.

scholarly journals Factors Determining the Success of HSR Building Projects

2020 ◽  
Vol 6 (2) ◽  
pp. 5-19
Author(s):  
Elena M. Volkova
Keyword(s):  
Construction Projects ◽  
High Speed ◽  
Success Factors ◽  
Economic Effects ◽  
Scientific Result ◽  
High Speed Rail ◽  
Building Projects ◽  
The World ◽  
The Russian Federation ◽  
The Impact

The article reviews the world experience in the construction and operation of high-speed railways in terms of factors that determine the success or failure of such projects. Since the construction of HSR is often considered as a part of national projects on a broader scale, it is proposed to use as criteria for success not only commercial indicators, but also various socio-economic effects arising from their implementation. The author classifies externalities that reflect the impact of HSR on the development of regions and cities and presents the results of foreign research on their quantitative and qualitative analysis. Special attention is paid to the experience of China, since this country significantly differs from the rest of the world in terms of development of high-speed rail traffic. In this regard, the largest amount of representative data that allows us to identify the success factors of HSR projects can be found for Chinese projects. The main scientific result of this article is a generalization of the existing experience of HSR construction projects and justification of the prospects for implementing such projects in the Russian Federation.

Fast-tracking of construction projects: a case study

1988 ◽  
Vol 15 (4) ◽  
pp. 493-499 ◽  
Author(s):  
P. Fazio ◽  
O. Moselhi ◽  
P. Théberge ◽  
S. Revay
Keyword(s):  
Construction Management ◽  
Construction Projects ◽  
Fast Track ◽  
Project Delivery ◽  
Design Management ◽  
Fast Tracking ◽  
Design Activities ◽  
Effective Use ◽  
The Impact

The growing use of professional construction management has been synonymous with the development of new project delivery systems such as the phased construction approach and the fast-tracking technique. This paper establishes the distinction between these two types of approach which have become increasingly popular for reducing project duration. The paper further illustrates, through a case study, the possible consequences of compressing and overlapping design activities in a fast-track program to expedite project delivery. A delay analysis shows the impact of this accelerated technique on construction activities. The far-reaching effect of mistakes during the early design/engineering phase in a fast-track program is usually underrated. Accelerating a project through fast-tracking is a major decision, and construction professionals often are not aware of its implications. Based on the case study examined in this paper and other fast-track constructions previously analyzed, trouble areas requiring special attention have been depicted and recommendations with regard to the effective use of this technique are presented. It has also been shown that if intensified effort on problem areas is lacking, such a popular accelerated technique could result in unexpected delays. Key words: fast-tracking, phased construction, professional construction management, design management.

California's “Fast-Track” to High-Speed Rail

2016 ◽  
pp. 15-32
Author(s):  
Rod Diridon Sr. ◽  
Ben Tripousis
Keyword(s):  
High Speed ◽  
Fast Track ◽  
State Funding ◽  
High Speed Rail ◽  
Public And Private ◽  
Private Partnership ◽  
The Past ◽  
The Us ◽  
High Speed Trains ◽  
Private Investors

For over 50 years, after both public and private studies confirmed California's need for high-speed rail, nothing happened. The rest of the US had a similarly disappointing experience when attempting to break into the rapidly growing family of nations with operating high-speed trains. Yet, over the past year, California has contracted over $2.5 billion in high-speed rail civil work, is preparing RFPs for three times that amount, and has secured commitments for nearly $25 billion in additional federal and state funding over the next 30 years. Private investors are lining up for the nation's first high-speed rail public-private partnership to complete this $68 billion, 540 mile project. This chapter describes the unprecedented technical excellence, political courage, and visionary voter support that created that high-speed rail breakthrough for California and the nation.

Analysis of Lateral Track Strength for High Speed Rail

2005 ◽  
Author(s):  
Steven M. Chrismer
Keyword(s):  
High Speed ◽  
Maximum Speed ◽  
Strength Model ◽  
Vehicle Dynamic ◽  
High Speed Rail ◽  
Independent Analysis ◽  
Load Limit ◽  
Rail Industry ◽  
Passenger Trains ◽  
Made In

Recently the FRA has proposed a reduction in the maximum allowable net axle lateral load limit from the current 50 percent of static vertical axle load (NAL/V limit = 50%) to less than 40 percent depending, in part, on the basis of FRA’s lateral track strength model, TREDA. Such a reduction could indirectly result in limiting the maximum speed of high speed passenger trains to the equivalent of 7 inches (178 mm) cant deficiency. This paper reports on the author’s investigation of selected assumptions and calculations made in TREDA. Improvements to the model are recommended and a revised NAL/V relationship is proposed, derived from an independent analysis of the driving and resisting forces. Finally, a vehicle dynamic analysis is performed to determine how the author’s proposed revised NAL/V limit would affect 9-inch (229 mm) cant deficiency operation as the high speed rail industry is now considering.

California's “Fast-Track” to High-Speed Rail

2020 ◽  
pp. 1013-1026
Author(s):  
Rod Diridon Sr. ◽  
Ben Tripousis
Keyword(s):  
High Speed ◽  
Fast Track ◽  
State Funding ◽  
High Speed Rail ◽  
Public And Private ◽  
Private Partnership ◽  
The Past ◽  
The Us ◽  
High Speed Trains ◽  
Private Investors

For over 50 years, after both public and private studies confirmed California's need for high-speed rail, nothing happened. The rest of the US had a similarly disappointing experience when attempting to break into the rapidly growing family of nations with operating high-speed trains. Yet, over the past year, California has contracted over $2.5 billion in high-speed rail civil work, is preparing RFPs for three times that amount, and has secured commitments for nearly $25 billion in additional federal and state funding over the next 30 years. Private investors are lining up for the nation's first high-speed rail public-private partnership to complete this $68 billion, 540 mile project. This chapter describes the unprecedented technical excellence, political courage, and visionary voter support that created that high-speed rail breakthrough for California and the nation.

scholarly journals Evaluation of the effectiveness of high-speed rail projects in the Czech Republic in terms integration potential

GeoScape ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 1-10
Author(s):  
Milan Viturka ◽  
Vilém Pařil
Keyword(s):  
Czech Republic ◽  
Market Integration ◽  
Construction Projects ◽  
High Speed ◽  
Mobility Model ◽  
Labour Mobility ◽  
High Speed Rail ◽  
Marginal Rate ◽  
The Czech Republic ◽  
The Impact

AbstractThe paper deals with the evaluation of the effectiveness of the construction of high-speed rails/HSR in the Czech Republic with an emphasis on the perception of their potential impact on labour market integration. The introductory part analyses the position of the main Central European metropolises in the HSR network as a tool for transnational integration, where the leading position of German and Swiss metropolises was confirmed. The main goal of the paper is assessing the impact of HSR construction projects on the work attractiveness of Czech metropolitan regions using the model of marginal rate of labour mobility model determined by the ratio of income and cost increases (including variant scenarios of lost time costs as negative externality). Its application combines economic and geographic analysis and thus contributes to the integration of space and time into economic theory. The performed analyses demonstrate the most significant positive impacts of the construction of HSR on the work attractiveness of Prague, followed by Brno. Regarding the adequate effects of the operating speed, it is possible to evaluate them as secondary due to the small distances of the affected residential centres. Overall, we expect that the implementation of the discussed projects will not have a significant impact on the labour mobility of the population and it is therefore necessary to pay attention to their other benefits.

scholarly journals Fatigue Behavior of Rail Connections on Semi –High Speed and High Speed Rail Networks

2020 ◽  
Vol 9 (4) ◽  
pp. 722-737
Keyword(s):  
Fatigue Life ◽  
High Speed ◽  
Fatigue Behavior ◽  
Wheel Load ◽  
High Speed Rail ◽  
Continuous Welded Rail ◽  
Normal Speed ◽  
Simulation Results ◽  
Made In ◽  
Ansys Workbench

Rail joint is the most vulnerable and weakest part in the rail structure. Bolted rail joints and welded rail joints are the most predominantly used rail joints. In recent times, continuous welded rail joints are widely used. The literature study exhibits that the performance of welded rail joints are comparatively better than the bolted rail joints. This project mainly deals with the fatigue behavior of welded rail joints subjected to normal speed, semi-high speed and high speed rail networks with respect to rail joint location on the sleeper. The rail joint kept on two conditions, mainly rail joint on top of the sleeper and rail joint in between the sleepers. The model was created and the respective finite element analyses were made in ANSYS Workbench software. The rail joint was analyzed for the movement of wheel load on the rail for all speed conditions mentioned. The butt joint was given at the region of rail joint and the fatigue life results were obtained in the analyses made in ANSYS Workbench. The analyses methods covers the rail and wheel model creation, application of corresponding loads and supports and the simulation results were obtained. The simulation results portrays that when the continuous welded rail joint is located on the sleeper, the fatigue life of the rail joint in both the normal speed and semi-high speed conditions is higher when compared to the fatigue life of rail joint in high speed condition. And also when the welded rail joints are located in between two sleepers the rail joint in high speed rail networks provide increased fatigue life when compared with the rail joints located in normal and semi high speed conditions. This research provides a beneficiary effect and serves as a base for increasing the fatigue life of the rail networks.

Analysis of Factors Affecting Stability of Tunnel

2014 ◽  
Vol 496-500 ◽  
pp. 2520-2522
Author(s):  
Xin Zhe Li ◽  
Juan Liu ◽  
Xin Liang Li
Keyword(s):  
Construction Projects ◽  
High Speed ◽  
Structural Characteristics ◽  
High Speed Rail ◽  
Factors Affecting ◽  
Construction Methods ◽  
Western Area ◽  
Geological Conditions ◽  
Geological Factors ◽  
The Stability

Along with the high-speed rail era, more and more railway construction projects are held in China western area, but the geological conditions in these areas are often complex, so it brings difficulty to the construction of tunnel in building railways. This paper studies the factors influencing the stability of tunnels. It divides these factors into two categories: engineering geological factors and engineering technological factors. Furthermore, it analyzes other factors that affect the stability of tunnels, such as structural characteristics of surrounding rock, mechanics properties of rock mass and construction methods.

scholarly journals Making Tracks

2016 ◽  
Vol 138 (02) ◽  
pp. 36-41
Author(s):  
Bridget Mintz Testa
Keyword(s):  
Rural Areas ◽  
High Speed ◽  
Passenger Cars ◽  
High Speed Rail ◽  
Bullet Train ◽  
Rail Line ◽  
The Right ◽  
Car Travel ◽  
Made In ◽  
The Way

This review discusses various challenges and solutions to tackle them on the route that the Texas Central is developing between Houston and Dallas. A privately funded high-speed rail line promises to whisk passengers from Houston to Dallas at 200 mph; however, building the project may divide rural areas even as it unites cities. Inter-regional passenger car travel and three- to five-hour air flights are increasingly plagued by delays, hassles, and bureaucratic security theater. Researchers believe high-speed rail can compete in that market, potentially transforming the way business is conducted and national geography is conceived. That is, of course, if the companies building high-speed rail lines can find the right alignments between cities without alienating residents, businesses, and farmers along the way. Texas Central Railway has chosen the Japanese Shinkansen bullet train technology for its trainsets and rail. The current plan is for all the power and passenger cars to be made in Japan.

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