scholarly journals Simplified Probabilistic Analysis of Settlement of Cyclically Loaded Soil Stratum by Point Estimate Method

2016 ◽  
Vol 63 (2-3) ◽  
pp. 121-133 ◽  
Author(s):  
Jarosław Przewłócki ◽  
Jarosław Górski ◽  
Waldemar Świdziński
Keyword(s):  
Probabilistic Analysis ◽  
Soil Layer ◽  
Cohesive Soil ◽  
Point Estimate ◽  
Model Parameters ◽  
Soil Stratum ◽  
Point Estimate Method ◽  
Estimate Method ◽  
Soil Settlement ◽  
Simplified Algorithm

AbstractThe paper deals with the probabilistic analysis of the settlement of a non-cohesive soil layer subjected to cyclic loading. Originally, the settlement assessment is based on a deterministic compaction model, which requires integration of a set of differential equations. However, with the use of the Bessel functions, the settlement of a soil stratum can be calculated by a simplified algorithm. The compaction model parameters were determined for soil samples taken from subsoil near the Izmit Bay, Turkey. The computations were performed for various sets of random variables. The point estimate method was applied, and the results were verified by the Monte Carlo method. The outcome leads to a conclusion that can be useful in the prediction of soil settlement under seismic loading.

scholarly journals Probabilistic Analysis Of A Space Truss By Means Of A Multidimensional Variable Description

2015 ◽  
Vol 61 (2) ◽  
pp. 99-124 ◽  
Author(s):  
P. Sorn ◽  
J. Górski ◽  
J. Przewłócki
Keyword(s):  
Probabilistic Analysis ◽  
Limit State ◽  
Limit Load ◽  
Point Estimate ◽  
Random Parameters ◽  
Engineering Structures ◽  
Mean Values ◽  
Space Truss ◽  
Point Estimate Method ◽  
Estimate Method

AbstractProbabilistic analysis of a space truss is presented in the paper. Reliability of such a structure is sensitive to geometrical and material imperfections. The objective of this paper is to present a variant of the point estimate method (PEM) to determine mean values and standard deviations of limit loads of engineering structures. The main advantage presented by this method is the small number of sample calculations required to obtain estimators of investigated parameters. Thus the method is straightforward, requiring only preliminaries of probability theory. This approach is illustrated by limit state analysis of a space truss, considering geometric and material imperfections. The calculations were performed for different random models, so the influence of random parameters on the limit load of the truss can be determined. A realistic snow load was imposed.

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