A Simple Linear Method Applied in Mat Global Structural Analysis for Mat-supported Jack-up Rig

DOI

10.2991/978-94-6463-473-0_2How to use a DOI?

Keywords

Jack-up Rig; Mat Structural Assessment Foundation Stability; Linear Spring

Abstract

The global structural analysis for the mat-supported jack-up rig is always of the first priority since it determines the global behaviour of the platform. Different from the traditional 3-leg or 4-leg jack-up rigs, the mat-supported jack-up rig is sitting on the seabed floor instead of deeply penetrating into the seabed by the individual footing The non-linearity of the seabed soil brings more complexity to the mat global analysis. A simple linear method is introduced in this paper to solve the issues, and no non-linear elements are used. The main methodology is to use liner spring elements and iterate manually. The tension springs have to be removed after each iteration until the all the springs are in compression which is consistent with the common engineering practice that the soil is only taking compression load. Once the whole system is in equilibrium status, the normal structural assessment can be carried on in the next step. This method also helps the small offshore engineering firms reduce their cost on the purchase of those costly advanced FEM software.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xintong Tang
AU  - Aijun Ling
AU  - Yongqiang Zhang
PY  - 2024
DA  - 2024/08/22
TI  - A Simple Linear Method Applied in Mat Global Structural Analysis for Mat-supported Jack-up Rig
BT  - Proceedings of the 2024 3rd International Conference on Applied Mechanics and Engineering Structures (AMES 2024)
PB  - Atlantis Press
SP  - 4
EP  - 12
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-473-0_2
DO  - 10.2991/978-94-6463-473-0_2
ID  - Tang2024
ER  -