Seismic Hazard Analysis of Nonlinear Structures. II: Applications
Publication: Journal of Structural Engineering
Volume 120, Issue 11
Abstract
In a companion paper, a methodology for the direct computation of the annual seismic risk of postelastic damage in realistic, nonlinear, multi‐degree‐of‐freedom structures was developed. This methodology makes use of the (random) response factor to characterize the damage potential of future ground motions coupled with conventional spectral‐acceleration probabilistic seismic hazard analysis. The present paper provides the detailed procedure for the empirical estimation of the (mean) nonlinear response factor for real, complex structures. Seismic hazard curves of several types and multiple levels of postelastic damage for these two structures are also displayed. The two illustrations (large 3D steel‐jacket offshore linearities: steel and soil material non‐linearity, and softening geometric nonlinearity, both locally (buckling diagonal braces) and globally (the effect). The application is made practical by the relatively few nonlinear dynamic analyses necessary. Improved software and computational efficiency has brought such analyses within the same general accessibility and cost range as linear dynamic analyses.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
“API recommended practice for planning, designing and constructing fixed offshore platforms.” (1991). API RP 2A, 19th Ed., American Petroleum Institute, Washington, D.C.
2.
Bazzurro, P. (1993). “Seismic hazard analysis of nonlinear structures with application to packet‐type offshore platforms,” Engineer's Degree thesis, Stanford University, Stanford, Calif.
3.
Bazzurro, P., and Cornell, C. A. (1994). “Seismic hazard analysis of nonlinear structures. I: Methodology.” J. Struct. Engrg., ASCE, 120(11), 3320–3344.
4.
Bea, R. G. (1992). “Seismic design and requalification methodologies for offshore platforms.” Proc., Int. Workshop on Seismic Design and Requalification of Offshore Struct., U.S. Department of Commerce, Washington, D.C.
5.
Campbell, K. W. (1990). “Empirical prediction of near‐source soil and soft rock ground motions for the Diablo Canyon power plant site, San Luis Obispo, CA.” Rep. Prepared for Lawrence Livermore National Laboratories, Dames & Moore, San Francisco, Calif.
6.
Inoue, T. (1990). “Seismic hazard analysis of multi‐degree‐of‐freedom structures.” Rep. No. RMS‐8, Dept. of Civ. Engrg., Stanford University, Stanford, Calif.
7.
Inoue, T., and Cornell, C. A. (1991). “Seismic hazard analysis of MDOF structures.” Proc., of ICASP, Instituto de Ingenieria, UNAM, Mexico City, Mexico.
8.
KARMA computer program, Documentation, Vols. I–V (1989). ISEC Inc., San Francisco, Calif.
9.
Lamport, W. B. “Static in‐place analyses of Indonesia's Rajah Wellhead platform (11 conductors).” (1991). Rep. No. 91‐21, Proj. No. 660‐63202, Unocal Corporation, Bea, Calif.
10.
Marshall, P. W., Gates, W. E., and Anagnostopoulos, S. (1977). “Inelastic dynamic analysis of tubular offshore structures.” Proc., Offshore Technol. Conf., Offshore Technology Conference, Richardson, Tex., 235–246.
11.
McGuire, R. K. (1976). “EQRISK, Fortran computer program for seismic risk analysis.” Open File Rep., 76‐67, United States Geological Survey, USGS, Denver, Colo.
12.
Regulations for the structural design of fixed structures on the Norwegian continental shelf. (1977). Norwegian Petroleum Directorate, Oslow, Norway.
13.
SeaStar computer program, documentation, Vols. I–IV (1991). PMB Engineering, San Francisco, Calif.
14.
“Seismic hazard analysis for the offshore Kalimantan Sites, Indonesia.” (1992). Rep. Prepared for Unocal Science & Technology Division, Risk Engineering, Inc. (REI), Golden, Colo.
15.
“Seismic risk and site response study, offshore East Kalimantan, Indonesia.” (1981). Prepared for Union Oil Company, Dames & Moore, San Francisco, Calif.
16.
Sewell, R. T. (1988). “Damage effectiveness of earthquake ground motion: characterizations based on the performance of structures and equipment,” PhD thesis, Stanford University, Stanford, Calif.
17.
“Statpipe development project, independent in‐place static analysis of riser platform 16/11 S.” (1983). DNV Industrial Offshore Div. Rep. No. 83‐0838, Vol. 1, Det Norske Veritas, Oslo, Norway.
18.
“Structural design specification for offshore installation.” (1985). Design Specification N‐SD‐001, rev. 1, Statoil Stavanger, Norway.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 120 • Issue 11 • November 1994
Pages: 3345 - 3365
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jul 9, 1993
Published online: Nov 1, 1994
Published in print: Nov 1994
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.