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Title of Journal: KSCE J Civ Eng

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Abbravation: KSCE Journal of Civil Engineering

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Korean Society of Civil Engineers

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DOI

10.1002/nadc.19820301001

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1976-3808

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Discussion of sensitivity factors and dominating v

Authors: Jitao Yao Kaikai Cheng
Publish Date: 2016/06/30
Volume: 21, Issue: 1, Pages: 37-44
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Abstract

The partial factor method is considered to be one of the most reliable design methods However engineers have examined the shortcomings of the partial factor method primarily its flexibility and generality in searching for the values of partial factors In order to improve upon the partial factor method the design value method has been established on the basis of probability The design value method is more flexible general and represents the developing direction of the reliability design method However based on experience a set of sensitivity factors α i values has been developed The sum of squares may be greater than 10 as a result of conservatism Although some researchers have revised the values of α i by using the enumeration optimization method the results are not ideal This paper focuses on the recommended values of sensitivity factors that are applicable to the safety design as well as the serviceability design It will be shown that these recommended values can improve the accuracy of the reliability index and present specific ranges of relative errors This makes it possible to establish a practical design value method based on probability In addition a method to determine the dominating parameter is illustrated

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