Nonlinear ultimate strength analysis of fixed offshore platforms for earthquake environments

Book · Fri Dec 01 00:00:00 EST 1995

OSTI ID:129014

Chang, S S ^[1]

---

1. Hudson Engineering Corp., Houston, TX (United States)

The design of an offshore platform usually requires the use of ASME B31.3 and API (American Petroleum Institute) RP 2A design codes. ASME B31.3 addresses the design of pressure piping systems for offshore facilities while API RP 2A ``Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms`` (WSD or LRFD) addresses the structural design. This paper first identifies the difference between the ASME B31.3 and API RP 2A on the earthquake load requirements. Second, the paper presents a nonlinear static pushover analysis of a typical fixed offshore platform subject to a ductility level earthquake in 394 ft (120 m) of water depth. The analysis uses a three-dimensional structural model consisting of STRUT, BEAM-COLUMN and LINEAR BEAM elements to determine the structural response while properly accounting for structure-pile-soil interaction effort. Finally, the status of current on-going efforts to implement the API RP 2A code (LRFD version) to the ISO code (International Organization for Standardization), particularly on the earthquake resistant design aspect of fixed offshore the platforms, is briefly reported.

• OSTI ID: 129014
• Report Number(s): CONF-950740-; ISBN 0-7918-1339-8; TRN: IM9550%%382
• Resource Relation: Conference: Joint American Society of Mechanical Engineers (ASME)/Japan Society of Mechanical Engineers (JSME) pressure vessels and piping conference, Honolulu, HI (United States), 23-27 Jul 1995; Other Information: PBD: 1995; Related Information: Is Part Of Natural hazard phenomena and mitigation -- 1995; PVP-Volume 308. DOE facilities programs/design criteria and methods for: Impact, wave, high frequency, and seismic loads; Lin, C.W. [ed.] [Lin (Chi-Wen), Martinez, CA (United States)]; Wang, C.Y [ed.] [Argonne National Lab., IL (United States)]; Chang, S.J. [ed.] [Oak Ridge National Lab., TN (United States)]; Chen, W.W. [ed.] [Westinghouse Hanford Co., Richland, WA (United States)]; Mok, G.C.; Murray, R.C. [eds.] [Lawrence Livermore National Lab., CA (United States)]; PB: 461 p.
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
02 PETROLEUM
03 NATURAL GAS
OFFSHORE PLATFORMS
SEISMIC EFFECTS
DESIGN
BUILDING CODES
STRUCTURAL BEAMS
MECHANICAL STRUCTURES
RESPONSE FUNCTIONS
COMPUTERIZED SIMULATION
SOIL-STRUCTURE INTERACTIONS
SEISMIC EVENTS
STRESS ANALYSIS
EXPERIMENTAL DATA
COMPILED DATA