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Model uncertainty for the capacity of strip footings under negative and general combined loading

International Conference on Applications of Statistics and Probability (12th : 2015 : Vancouver, B.C.)

This paper investigates the model uncertainty of Eurocode 7 approach for estimating the bearing capacity of shallow foundations under negative and general combined loading. In the first stage, a regression equation ƒ is derived to remove the dependency of the model factor Ms on the input parameters, where Ms is defined as the ratio between the lower bound solution and the calculated capacity from Eurocode 7 approach. The probability distribution of the residual part ƞ of Ms is then determined. Secondly, the model uncertainty of the lower bound limit analysis is characterized by using a loading database. The result is represented as the probability distribution of the model factor MLB, which is defined as the ratio between the measured capacity and the lower bound solution. Finally, the model uncertainty of the modified model factor M′ defined as the ratio between the measured capacity and the capacity from Eurocode 7 approach multiplied by the regression equation ƒ is characterized by combining the results for ƞ and MLB. The results are validated by using another independent loading database.

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This collection contains the proceedings of ICASP12, the 12th International Conference on Applications of Statistics and Probability in Civil Engineering held in Vancouver, Canada on July 12-15, 2015. Abstracts were peer-reviewed and authors of accepted abstracts were invited to submit full papers. Also full papers were peer reviewed. The editor for this collection is Professor Terje Haukaas, Department of Civil Engineering, UBC Vancouver.

Vancouver : University of British Columbia Library

10.14288/1.0076091

Non UBC

Unreviewed

http://creativecommons.org/licenses/by-nc-nd/2.5/ca/