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정철원 ( Jung Chul-won ),윤병조 ( Yun Boung-jo ) 한국구조물진단유지관리공학회 1998 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.2 No.1
Failure probabilities can be estimated by a variety of methods such as FOSM(first order, second moment), AF0SM(advanced FOSM), etc. These methods require the evaluation of the derivatives of the failure equation, which is difficult and even impossible in many situations. In this paper PEM(point estimation technique) is described by which the failure probability could be obtained using the values of the failure function alone evaluated at a number of preselected points. Depending on the number of variables in the problem, the number of points for the function evaluation could be large. To identify the stability of cantilever retaining wall in safe state by the deterministic method, these potential modes of such geotechnical failures as overturning, horizontal sliding and bearing capacity are analyzed using PEM.