TY - JOUR
T1 - Analysis-based design equations for composite tubular connections
AU - Aritenang, W.
AU - Elnashai, A. S.
AU - Dowling, P. J.
N1 - Funding Information:
Whereas existing design guidance for composite tubular pile/platform connections (Figure 1) issued by the UK Department of Energy I and the American Petroleum Institute 2 seem to yield safe design, the economy of the ensuing connections is questionable. Large, and inconsistent, safety factors ranging between 3.4 and 8.3 have been observed when comparing test results with code predictions 3. Moreover, the range of parameters covered by design codes is significantly narrower than that used in practice. This, coupled with recent demands by oil companies to exceed the above ranges for very deep water platforms, establishes the timeliness of a comprehensive re-assessment of the current state-of-the-art and practice in analysis and design of grouted pile/sleeve connections. As part of a programme of research funded by UK DEn and oil companies and managed by the UK Marine Technology Directorate, the authors conducted experimental, analytical and numerical studies into the behaviour of grouted connections with weld-beads. The objectives of the project were to investigate load-transfer mechanisms and failure modes of typical connections and to suggest extensions and modifications of the existing design formulae. Within this remit, a limited experimental test series was undertaken and used not only to identify failure modes, but also to derive load-slip curves for use in numerical analysis 4. A nonlinear finite element model developed previously for friction-based connections 5 was extended to account for bearing
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1992
Y1 - 1992
N2 - As an alternative solution for the calculation of the ultimate strength of grouted tubular connections a set of design equations for plain and weld-beaded composite connections is derived in this paper. This is based on the fundamental load-transfer mechanisms for bearing of weld-beads on grout and friction between steel and the grout. The formulation accounts for all the important governing parameters such as hoop strain in tubulars, confined grout strength, weld-bead height, tubular thickness and length to diameter ratio. Comparison between the developed design procedure and all existing experimental data confirm the validity of this approach. Moreover, the results obtained are an improvement over the UK Department of Energy guidance notes and are far superior to those proposed by the American Petroleum Institute.
AB - As an alternative solution for the calculation of the ultimate strength of grouted tubular connections a set of design equations for plain and weld-beaded composite connections is derived in this paper. This is based on the fundamental load-transfer mechanisms for bearing of weld-beads on grout and friction between steel and the grout. The formulation accounts for all the important governing parameters such as hoop strain in tubulars, confined grout strength, weld-bead height, tubular thickness and length to diameter ratio. Comparison between the developed design procedure and all existing experimental data confirm the validity of this approach. Moreover, the results obtained are an improvement over the UK Department of Energy guidance notes and are far superior to those proposed by the American Petroleum Institute.
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U2 - 10.1016/0141-0296(92)90031-K
DO - 10.1016/0141-0296(92)90031-K
M3 - Article
AN - SCOPUS:0026617083
VL - 14
SP - 195
EP - 204
JO - Structural Engineering Review
JF - Structural Engineering Review
SN - 0141-0296
IS - 3
ER -