The Basis for New Design Formulae for Grouted Jacket to Pile Connections

Billington, C.J.; Tebbett, I.E.

doi:10.4043/3788-ms

Cited by 25 publications

(11 citation statements)

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“…Characteristic resistance should have low probability of being exceeded at any specified design life of Jacket. It is defined as that value below which not more than 5% of the test results of large number of test would fall (Billington and Tebbett, 1980). It can also be described as 0.05 fractile of a lower end of normal distributions (ISO-2394(ISO- , 1998DNV, 2008).…”

Section: Regionmentioning

confidence: 99%

Determination of environmental load factors for ISO 19902 code in offshore Malaysia using FORM structural reliability method

2014

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Section: Regionmentioning

confidence: 99%

Determination of environmental load factors for ISO 19902 code in offshore Malaysia using FORM structural reliability method

2014

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“…On subsequent static testing, plain pipe specimens and specimens with shear connectors gave average strengths 19 and 10% greater, respectively, than predicted by the mean-strength equation. 4 Given the degree of scatter in the strength of grouted connections, these increases are not considered significant. The general shape of the load-displacement curve was as expected.…”

Section: Early-age Cyclic Loadingmentioning

confidence: 99%

“…4, subsequently adapted in Ref. 2, and recent revisions to API RP 2A 3 based on work by Karsan and Krah1 7 are derived from essentially the same data base.…”

Section: Comparison Of Static Strength Design Approachesmentioning

confidence: 99%

Recent Developments in the Design of Grouted Connections

Tebbett

1987

SPE Production Engineering

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A recently completed major research project on the structural behavior of grouted pile/sleeve connections covered static strength, 'the effect of cyclic movement during grout setting, long-term fatigue, calibration of measured strengths for different quality-control samples, and the investigation of connections removed after 13 years of service in the North Sea. Preliminary data from this project resulted in the issue of revised guidance notes by the U.K. Dept. of Energy and have been recognized in recent amendments to API RP 2A. This paper discusses unpublished test results, the provisions of the latest design codes in relation to the available data, and the implications for design. Results and discussions apply to all types of grouted connections and many types of structures, including pile/sleeve connections for fixed jackets and tension leg platforms and grouted connections used for repair of tubular structures.

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“…This paper focuses on the load bearing behaviour of OPC filled GCs as alternative for high performance grouts. In contrast to most experimental test set-ups, which are basis for current offshore guidelines, like Billington [6,7] and Ingebrigtsen [8], the done tests are realised with realistic submerged ambient condition (cf. Fig.…”

Section: Introductionmentioning

confidence: 99%

Axially loaded grouted connections in offshore conditions using ordinary portland cement

Henneberg

Schaumann

Raba

2018

Proceedings 12th International Conference on Advances in Steel-Concrete Composite Structures - ASCCS 2018

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A grouted connection (GC) is a hybrid connection which joins two telescoped steel tubes by filling the annulus between the steel tubes with grout. GCs are frequently used to enable a force fitted connection between piles and substructure of offshore wind turbines. At latticed substructures this connection is located at mudline level in wet ambient conditions (AC). Nowadays special grout materials are used to achieve not only best mechanical properties but also a good performance during grouting in offshore conditions. To reduce production costs the use of ordinary portland cement (OPC) is investigated as an alternative filling material within this paper. OPC has a much lower tendency to segregate, as there are no aggregates added. This leads to more simplified, stable and cheaper production processes offshore. Further focus is put on the failure mode of OPC filled GCs in submerged condtions. For an appropriate use of OPC offshore a feasible mechanical performance needs to be ensured. Investigating this, small and large-scale laboratory tests were performed at Leibniz Universität Hannover. Using the experimental test setup of previous investigations for special high performance grouts (HPG) [1,2], enables a direct comparison of HPG and OPC. Documenting liquid and solid OPC properties, like slump flow and compressive strength confirms a stable material quality. Small-scale ULS-tests showed significantly lower ULS-capacities and a more brittle failing process compared to HPG. Lagre-scale tests confirmed the observed failure mechanisms of Schaumann and Raba for OPC filled GCs in submerged conditions [3]. Carried out tests showed significant influence of grout material and confirmed influence of grout annulus size on fatigue capacity.

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The Basis for New Design Formulae for Grouted Jacket to Pile Connections

Cited by 25 publications

References 0 publications

Determination of environmental load factors for ISO 19902 code in offshore Malaysia using FORM structural reliability method

Determination of environmental load factors for ISO 19902 code in offshore Malaysia using FORM structural reliability method

Recent Developments in the Design of Grouted Connections

Axially loaded grouted connections in offshore conditions using ordinary portland cement

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