suc brasil 2012 non linear analysis of offshore steel jackets

Nonlinear Analysis of Offshore Steel Jackets:Study and Application of the Quasi-Static Pushover Method

Sesam User Conference 2012 – Rio de Janeiro, Brazil

Fábio OrsiniStructural Engineer – Promon EngenhariaProfessor – Universidade Federal do Rio de Janeiro

2ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

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a INTRODUCTION1

STEEL JACKETS4

MOTIVATION2

SOIL-PILE INTERACTION6

TUBULAR JOINTS5

JUSTIFICATION3

MEMBER MODELING7

USFOS SOFTWARE8

PROTEUS JACKET9

ANALYSIS RESULTS10

3ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

INTRODUCTION1

OFFSHORE STEEL JACKETS ARE COMPLEX STRUCTURES SUBMITTED TO A GREAT SET OF DIFFERENT LOADS AND ENVIRONMENTAL ACTIONS.

4ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

MOTIVATION2

MANY OF THESE STRUCTURES ARE MORE THAN 25 YEARS OLD AND SOME MORE ARE GETTING THERE SAFETY IS THE MAIN ISSUE.

PIPER ALPHA, 1988 TROPICAL CYCLONE CATARINA, 2004

5ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

JUSTIFICATION3

YET, MANY OTHER JACKETS ARE BEING BUILT INFIELD SYSTEMS PREDICTS MORE THAN USD81Bi UNTIL 2016 FOR NEW CONSTRUCTIONS

PRA-1 (PETROBRAS)

MOP-1 (PETROBRAS)

PMXL-1 (PETROBRAS)

6ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

STEEL JACKETS4

3D TRUSS-WORK FRAMED SYSTEMS: (MOST OF THEM) MAY BE DESIGNED AS QUASI-STATIC STRUCTURES

7ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

TUBULAR JOINTS5

BOUWCAMP, 1980 AND MORIN et al., 1998 LOCAL JOINT FLEXIBILITIES CHANGE STRUCTURAL RESPONSE.

BARLTROP et al., 1984 , FESSLER et al., 1986 AND BUITRAGO et al., 1993 MODELS FOR PREDICTING LOCAL JOINT FLEXIBILITIES.

DIER et al., 2000 (MSL ENGINEERING JIP PROJECT) NON LINEAR FORCE X DISPLACEMENT CURVES FOR LOCAL JOINT FLEXIBILITIES.

8ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

TUBULAR JOINTS5

FESSLER et al., 1986 AND BUITRAGO et al., 1993 PARAMETRIC EQUATIONS FOR LINEAR ELASTIC JOINT FLEXIBILITIES.

9ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

TUBULAR JOINTS5

FESSLER et al., 1986 AND BUITRAGO et al., 1993 PARAMETRIC EQUATIONS FOR LINEAR ELASTIC JOINT FLEXIBILITIES.

10ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

TUBULAR JOINTS5

FESSLER et al., 1986 AND BUITRAGO et al., 1993 PARAMETRIC EQUATIONS FOR LINEAR ELASTIC JOINT FLEXIBILITIES.

11ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

TUBULAR JOINTS5

DIER et al., 2000 (MSL ENGINEERING JIP PROJECT) NON LINEAR FORCE X DISPLACEMENT CURVES FOR LOCAL JOINT FLEXIBILITIES.

12ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

TUBULAR JOINTS5

DIER et al., 2000 (MSL ENGINEERING JIP PROJECT) NON LINEAR FORCE X DISPLACEMENT CURVES FOR LOCAL JOINT FLEXIBILITIES.

13ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

SOIL-PILE INTERACTION6

THREE CURVES: P-Y, T-Z AND Q-Z RELATIONSHIPS FOR DESCRIBING SOIL REACTIONS

P-Y

Q-Z

T-Z

14ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

SOIL-PILE INTERACTION6

T-ZP-Y

Q-Z

15ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

MEMBER MODELING7

NON LINEAR ANALYSIS MUST ACCOUNT FOR GEOMETRIC AND MATERIAL NONLINEARITIES LARGE DISPLACEMENTS DOMAIN

NON LINEAR ANALYSIS MUST ACCOUNT POST-BUCKLING BEHAVIOR OF COMPRESSED TUBULAR MEMBERS INITIAL IMPERFECTIONS

16ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

USFOS SOFTWARE8

SPECIFIC GEOMETRIC MODEL CONSTRUCTED USING GENIE CONVERTING TO USFOS

ENVIRONMETAL LOADS AND PILE MODELING ARE ALL DEFINED USING USFOS ITSELF

17ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

USFOS SOFTWARE8

18ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

USFOS SOFTWARE8

19ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

PROTEUS JACKET9

28 METERS WATER DEPTH NATURAL GAS EXPLOTATION SYSTEM SUPPORT PLATFORM UNMANNED

20ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

ANALYSIS RESULTS10

21ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

ANALYSIS RESULTS10

22ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

ANALYSIS RESULTS10

23ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

ANALYSIS RESULTS10

24ORSINI, F., Non Linear Analysis of Offshore Steel Jackets: Study and Application of the Quasi-Static Pushover Method. DNV Sesam User Conference 2012, Rio de Janeiro, Brazil.

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