Reliability Analysis of Redundant Ductile Structural Systems

Ma, H-F.; Ang, A.H-S.

Permalink

https://hdl.handle.net/2142/14103 Copy

Description

Title

Reliability Analysis of Redundant Ductile Structural Systems

Author(s)

• Ma, H-F.
• Ang, A.H-S.

Issue Date

1981-08

Keyword(s)

Ductile systems

Abstract

A practical method for determining the point estimate of the collapse probability of ductile structural systems, particularly, plastic frameworks and trusses is developed. In addition to the assumption that classical simple plastic method of analysis is applicable, the magnitudes of loads and the component resistance capacities of a structure are assumed to be stochastic with known distributions (e.g., normal). The first step of the proposed method of analysis is to identify the major collapse mechanisms. This step is transformed into an unconstrained nonlinear minimization problem and Hooke and Jeeves pattern search was adopted as the solution technique. Once the major mechanisms are identified, their corresponding performance functions may be developed through the principle of virtual work, from which the individual mechanism collapse probabilities are calculated. The system collapse probability is then evaluated through the method of PNET. Results of the propose~ method showed good agreement with corresponding Monte Carlo calculations for a wide variety of example problems examined.

Publisher

University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.

Series/Report Name or Number

Civil Engineering Studies SRS-494

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/14103

Sponsor(s)/Grant Number(s)

National Science Foundation Grants ENG 77-02007 and PFR 80-02584

Owning Collections