SOME PRACTICAL IMPLICATIONS OF ELEMENTARY SAFETY ANALYSIS

A NUMBER OF FACTORS AFFECTING STRUCTURAL SAFETY ARE STUDIED QUANTITATIVELY TO DETERMINE THE SITUATIONS UNDER WHICH THEY ARE SIGNIFICANT, AND THE CIRCUMSTANCES UNDER WHICH THEY ARE RELATIVELY UNIMPORTANT. ATTENTION IS FOCUSED ON THE INDIVIDUAL COMPONENTS OF A STRUCTURE, A STRUCTURE SUBJECTED TO AN ENTIRE HISTORY OF LOADING, COMPLEX STRUCTURE UNDER AN UNCERTAIN LOAD. A NUMBER OF FACTORS AFFECTING STRUCTURAL SAFETY WERE REVIEWED THROUGH ELEMENTARY RELIABILITY ANALYSIS, THESE INCLUDE DISPERSIONS IN STRENGTH AND LOAD, THE RELATIVE INFLUENCE OF RESISTANCE AND LOAD UNCERTAINTY, THE DEAD LOAD/LIVE LOAD RATIO, STATICAL INDETERMINACY, THE LENGTH OF THE STRUCTURES LIFE TIME, AND THE COMPLEXITY OF THE SYSTEM. QUANTITATIVE VERIFICATIONS ARE DEMONSTRATED IN MOST CASES TOGETHER WITH INDICATIONS AS TO THE DEGREE OF SIGNIFICANCE AND CONDITIONS FOR VALIDITY OF THESE NOTIONS. PROBALISTIC DEPENDENCE WAS FOUND CRITICAL IN SOME CASES. THE RELATIVE VARIABILITY OF LOAD AND RESISTANCE VARIATION HAS BEEN SEEN TO BE A SIGNIFICANT FACTOR IN DETERMINING THE DEGREE TO WHICH THE LENGTH OF LIFETIME AND THE COMPLEXITY OF THE STRUCTURE AFFECT ITS SAFETY. THE LIKELIHOOD OF A STRUCTURE'S FAILURE MAY DEPEND MOST STRONGLY ON ITS MOST UNRELIABLE POTENTIAL MODE OF FAILURE RATHER THAN ON THE TOTAL OF THE VARIOUS MODES' UNRELIABILITIES.

  • Supplemental Notes:
    • Vol 55, No 3, PP 135-157, 8 FIG
  • Authors:
    • Cornell, C A
    • VANMARCKE, E H
  • Publication Date: 1968-7

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  • Accession Number: 00208902
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 18 1994 12:00AM