This book contains 38 papers presented at the seventh Working Conference on 'Reliability and Optimization of Structural Systems' held at Boulder, Colorado, USA, on April 2-4, 1996. The Working Conference was organized by the IFIP (International Federation for Information Processing) Working Group 7.5 of Technical Committee 7 and was the seventh in a series of similar conferences. The objectives of the Working Group and hence this publication are:

• to promote modern structural systems optimization and reliability theory,
• to advance international co-operation in the field of structural system optimization and reliability theory,
• to stimulate research, development and application of structural system optimization and reliability theory,
• to further dissemination and exchange of information on reliability and optimization of structural systems, and
• to encourage education in structural system organization and reliability theory.


For engineers, research and development workers involved in the areas of structural and earthquake engineering and mathematical optimization.

Table of Contents

Part One: Keynote Lectures. Structural optimization: a lifetime project (R.B. Corotis). Structural optimization with reliability constraint (E. Polak et al.). Probabilistic models for the assessment of ship structural reliability (C. Guedes Soares). Reliability-based dual-level designs for seismic loads (Y.K. Wen). Part Two: Technical Contributions. Target reliability for structural design based on minimum expected life-cycle cost (A. H-S. Ang, D. De Leon). Optimal distribution of seismic upgrading interventions to maximize the expected flow in a road network (G. Augusti, M. Ciampoli). Seismic reliability analysis of a slender rigid block (G. Augusti, V. Sepe). A numerical procedure for optimal design subjected to prefixed reliability requirements (A. Borri, E. Speranzini). Nonstationary earthquake response analysis of linear classically and non-classically damped MDOF structures (J.P. Conte, B.-F. Peng). Seismic damage indexes in decisions related to structural safety (O. Diaz, L. Esteva). Gradient angle estimation by uniform directional simulation on a cone (O. Ditlevsen). Minimum expected life-cycle cost design for bridges (A.C. Estes et al.). Reliability of reinforced concrete columns under random loads (D.M. Frangopol et al.). System reliability analysis of concrete bridge superstructures (M. Ghosn et al.). Reliability assessment of masonry historical buildings: procedure and application (R. Giannini et al.). Structural failure probability calculation using nonlinear approximations (R. V. Grandi, L. Wang). Nonlinear systems with poisson white noise (M. Grigoriu). Methods for response-based design criteria (L. Huyse, M.A. Maes). Coincidence probabilities for intermittent pulse load processes with erlang arrivals (R. Iwankiewicz, R. Rackwitz). Nonlinear random vibration analysis through optimization (A. Der Kiureghian, C.-C Li). Reliability-based optimization of symmetric laminated com


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