Simplified analysis of chord and brace effects on jack-up leg penetration for preloading in soft clay-Reference-Cited by-同舟云学术

Simplified analysis of chord and brace effects on jack-up leg penetration for preloading in soft clay

Published:2018-12 Issue:12 Volume:55 Page:1900-1907
ISSN:0008-3674
Container-title:Canadian Geotechnical Journal
language:en
Short-container-title:Can. Geotech. J.

Author:

Aagesen R.¹,Dean E.T.R.²,Lee F.H.³,Li Y.P.⁴

Affiliation:

1. Capital Signal de México S. de R.L. de C.V., Mexico.

2. Caribbean Geotechnical Design Limited, Trinidad and UK.

3. Department of Civil and Environmental Engineering, Faculty of Engineering, National University of Singapore, Singapore.

4. Geotechnical Engineering Research Institute, Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China.

Abstract

The main codes of practice governing jack-up preloading presently do not consider the possibility of beneficial effects of soil resistance generated by leg chord and leg brace members as they move downwards through disturbed soil that has been squeezed past the spudcan to form part of the backfill. This paper argues that these effects can be significant for the special case of deep penetrations in soft clay. An approximate method of estimating the effects is proposed and discussed. Results are found to be broadly consistent with recent centrifuge model tests and numerical analyses. Further work is recommended to explore these potentially important and certainly complex effects.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

Link

http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2017-0434

Reference22 articles.

1. API. 2000. Recommended practice for planning, designing and installing fixed offshore platforms – working stress design, API RP2A. 21st ed., and subsequent updates. American Petroleum Institute.

2. Set Up and Resulting Punch-Through Risk of Jack-Up Spudcans during Installation

3. Development and application of force resultant models describing jack-up foundation behaviour

4. Davis, R.O., and Selvadurai, A.P.S. 2005. Plasticity and geomechanics. Cambridge University Press.

5. Dean, E.T.R. 2009. Offshore Geotechnical Engineering – Principles and Practice. Thomas Telford.

Cited by 5 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. New Approach for Environmental Load Charts of Jack-ups Considering Actual Preloading Operations;Journal of Marine Science and Application;2024-02-26

2. Review of Structural Strength in the Event of a One-Leg Punch through for a Wind Turbine Installation Vessel;Journal of Marine Science and Engineering;2023-05-31

3. Topology optimization of jack-up offshore platform leg structure;Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment;2020-06-18

4. Lattice Leg–Soil Interaction Effects in Deeply Embedded Spudcan Foundations;Advances in Offshore Geotechnics;2020

5. Assessment method for leaning instability of jackups during preloading in deep soft clay;Proceedings of the Institution of Civil Engineers - Geotechnical Engineering;2018-08