Evaluation of geotechnical property variability

Canadian Geotechnical Journal - Tập 36 Số 4 - Trang 625-639 - 1999
Kok‐Kwang Phoon, Fred H. Kulhawy

Tóm tắt

To evaluate geotechnical variability on a general basis that will facilitate the use of reliability-based design procedures, it is necessary to assess inherent soil variability, measurement error, and transformation uncertainty separately. The inherent variability and measurement error are addressed in a companion paper, and transformation uncertainty is addressed herein. A second-moment probabilistic approach is applied to combine these uncertainties consistently based on the manner in which the design soil property is derived. The design properties considered in this paper are undrained shear strength, effective stress friction angle, in situ horizontal stress coefficient, and Young's modulus. This paper concludes with specific guidelines on the typical coefficients of variation for these common design soil properties as a function of the test type and the type of correlation used.Key words: transformation uncertainty, undrained shear strength, friction angle, in situ horizontal stress coefficient, Young's modulus, geotechnical variability.

Từ khóa


Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

Canadian Geotechnical Journal

Tập 36 Số 4

625-639

Thông tin tác giả