An interaction chart design method for Eurocode compliant railway electrification mast foundations

Krechowiecki-Shaw, Christopher; Alobaidi, Imad M.

doi:10.1016/j.conbuildmat.2014.05.046

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…In the current analyses, soil stiffnesses were taken as integer multiples (1, 2 and 4) of the value of 15 MPa used by Krechowiecki-Shaw and Alobaidi (2015).…”

Section: Appendix 3: Use Of the Lateral Pile / Soil Interaction Program Alp To Illustrate The Effect Of The Assumed Soil Stiffness On Calmentioning

confidence: 99%

“…The design and installation of the overhead line masts, and in particular their foundations, seems to have been a key factor in the GWEP cost over-run (RIA, 2019). A High Output Piling System factory train (HOPS) was specified and built on the basis of previous experience with UK main line electrification, which suggested a maximum pile length of 5.5 m. Unfortunately, the simultaneous development of a revised approach to pile foundation design (Krechowiecki-Shaw and Alobaidi 2015) led to an apparently significant increase in design foundation depths. The development of both the HOPS and the revised foundation design process occurred in advance of the specification of the OLE itself.…”

Section: Introductionmentioning

confidence: 99%

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The design of railway overhead line equipment mast foundations

Powrie

Richards

Mootoosamy

2020

Proceedings of the Institution of Civil Engineers - Geotechnica

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Railway electrification offers significant benefits in terms of decarbonisation at the point of use and reduced traction costs. However to realise these benefits, the fixed infrastructure must be provided at an affordable cost. Recent schemes in the UK have seen the cost of railway electrification soar: one of a number of reasons for this has been the substantial increase in mast foundation pile lengths compared with historic practice. The paper explores this through a comparative review of traditional and modern pile design methods. In addressing the ultimate limit state, the various approaches are shown to give broadly consistent results in terms of pile length. However, increased pile lengths will be calculated if three-dimensional effects are not allowed for in limit equilibrium (ultimate limit state) calculations, or if a serviceability limit state calculation is carried out using unrealistically low soil stiffness. The results of the comparative analyses should give designers the confidence to use the traditional empirical approach, or a limit equilibrium calculation without the need for an explicit serviceability limit state check (as permitted by EC7) using potentially inappropriate soil stiffness parameters.

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“…In the current analyses, soil stiffnesses were taken as integer multiples (1, 2 and 4) of the value of 15 MPa used by Krechowiecki-Shaw and Alobaidi (2015).…”

Section: Appendix 3: Use Of the Lateral Pile / Soil Interaction Program Alp To Illustrate The Effect Of The Assumed Soil Stiffness On Calmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The design of railway overhead line equipment mast foundations

Powrie

Richards

Mootoosamy

2020

Proceedings of the Institution of Civil Engineers - Geotechnica

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“…The high population growth requires an increase in construction of public facilities. On the large projects sometimes need hundreds or thousands of foundations, such as on railway electrification masts [3]. The design of the foundations demands hundreds of structures.…”

Section: Introductionmentioning

confidence: 99%

“…Each of foundations is subjected to different loading and constructed in various soil properties, so that the site-specific design is not feasible and economic. Furthermore, The generic design of laterally loaded piles was introduced by Krechowiecki-Shaw and Alobaidi [3] in order to avoid the problem. Djarwanti et al [4] developed the graphical design of single piles capacities using Reese and O'Neill (1989 in Das [2]) method for sandy soil.…”

Section: Introductionmentioning

confidence: 99%

Development of Graphical Method of Pile Group Foundation Design

Djarwanti

Dananjaya

Prasetyaningrum

2016

AMM

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In the construction projects, a pile group foundation is often utilized. The group of bored piles is usually installed relatively close to each other and joined at the top by a pile cap to hold up the loads. In other hand, a fast estimation of the groups of piles capacities are needed in the preliminary design and in other conditions of projects, such as a supervisor of projects want to estimate the capacities of the group of piles. The purpose of this research is to study the correlations of groups of piles efficiencies with the number of piles and to compare the groups of piles capacities with the single piles capacities. Furthermore, this study is aimed to make a fast estimation of groups of piles capacities using proposed graphical method.The piles efficiencies are calculated using several methods, such as Simplified Analysis, Converse-Labare [1][2], Los Angeles Group, Seiler - Keeney, Das, and Sayed - Baker. In order to calculate the groups of piles capacities, the capacities of single piles are needed. The singles piles capacities are taken from graphical method proposed by Djarwanti et al. (2015a and 2015b). Three graphical methods utilized are derived from the Briaud et al. (1985) , Reese and Wright (1977), and Reese O’Neill method. Moreover, the proposed graphical method is applied in the case study. The case study takes palace in Graha Indoland Condotel Inside Yogyakarta Construction Project.The pile efficiency graph is recommended for this research since the value of pile efficiency could be easily taken. The value of pile efficiency for Graha Indoland Condotel Inside using Simplified Analysis, Converse - Labare, Los Angeles Group, Seiler – Keeney, Das, and Sayed – Baker are 1,75; 0,89; 0,94; 0,99; 4,00; 1,56 respectively. Meanwhile the value of pile group capacity with the value of pile group efficiency more than 1, showed that the pile group capacity based on the efficiency is bigger than the one based on single down pattern.

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Great Western railway electrification, UK: foundations for overhead line equipment

EsserJonathan

LethbridgeRichard²

2020

Proceedings of the Institution of Civil Engineers - Civil Engin

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Electrification of the Great Western railway between London and south Wales in the UK required the design and installation of 13 000 individual foundations for overhead line equipment along 650 km of live railway tracks. A key design requirement was to provide a simple method of allocating large volumes of foundations while providing a robust design for the wide range of ground conditions, topographies and loading regimes. This paper summarises the key geotechnical design considerations and the basis of design that was used. It then discusses the practicalities and experiences of the various construction techniques that were adopted, focusing on sections of the route where shallow rock was present.

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An interaction chart design method for Eurocode compliant railway electrification mast foundations

Cited by 4 publications

References 6 publications

The design of railway overhead line equipment mast foundations

The design of railway overhead line equipment mast foundations

Development of Graphical Method of Pile Group Foundation Design

Great Western railway electrification, UK: foundations for overhead line equipment

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