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Technical Brief

An Improved Reliability Analysis Method for Mooring Dolphin Structures

[+] Author and Article Information
Reda Farag

Lecturer
Department of Structures and Metallic Construction,
Housing and Building Research Center,
Giza 11511, Egypt
e-mail: red_bordany@yahoo.com

Achintya Haldar

Professor
Department of Civil Engineering and
Engineering Mechanics,
The University of Arizona,
Tucson, AZ 85721
e-mail: haldar@u.arizona.edu

Mahmoud El-Meligy

Professor
Department of Structural Engineering,
Mansoura University,
Dakahlia 35516, Egypt
e-mail: eggroup_egypt@yahoo.com

Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received October 11, 2011; final manuscript received March 18, 2014; published online May 22, 2014. Assoc. Editor: Arvid Naess.

J. Offshore Mech. Arct. Eng 136(3), 034501 (May 22, 2014) (5 pages) Paper No: OMAE-11-1090; doi: 10.1115/1.4027453 History: Received October 11, 2011; Revised March 18, 2014

A novel reliability evaluation procedure is proposed for analysis and design of offshore mooring dolphin structures (MDS). It is a hybrid approach consisting of an improved response surface method (IRSM), second-order reliability method (SORM), and several advanced factorial schemes. It is denoted as IRSM-SORM. Several schemes of IRSM-SORM are proposed and clarified with the help of an illustrative example.

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Figures

Grahic Jump Location
Fig. 1

Beam on elastic foundation model of laterally loaded free standing pile

Grahic Jump Location
Fig. 2

Scheme 0, Scheme 1, and Scheme 2 (coded variable space k = 3)

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