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Bearing Pressure of Foundation on Strong Layer Overlying Weak Clay Accounting for Compressibility
The present study analyzes response of a circular footing on two-layered clays. Several solutions are available for the ultimate bearing capacity of foundations on two-layered soil but none considers the compressibility of the layers. Strong and stiff layer of thickness, H, overlies a soft and weak clay with E1 > E2 and cu1 = 2.5cu2, where 1 and 2 correspond to top and bottom layers, respectively. Finite element axisymmetric analysis is carried out to evaluate the bearing pressure, q, versus settlement responses for ranges of stiffness ratio (RE = E1/E2) and different thicknesses of top layer. Variations of bearing pressure factors (Ncf = q/cu1) for circular footings of diameter, D, are obtained at different settlement ratios (SR), for a wide range of RE. Results are validated with the Merifield and Nguyen (Geomech Geoengin 1:151–162, 2006) for considered cases of layered clays with different H/D. Variation of Ncf with stiffness ratio, RE, for different SR and H/D ratios are presented and analyzed.
Bearing Pressure of Foundation on Strong Layer Overlying Weak Clay Accounting for Compressibility
The present study analyzes response of a circular footing on two-layered clays. Several solutions are available for the ultimate bearing capacity of foundations on two-layered soil but none considers the compressibility of the layers. Strong and stiff layer of thickness, H, overlies a soft and weak clay with E1 > E2 and cu1 = 2.5cu2, where 1 and 2 correspond to top and bottom layers, respectively. Finite element axisymmetric analysis is carried out to evaluate the bearing pressure, q, versus settlement responses for ranges of stiffness ratio (RE = E1/E2) and different thicknesses of top layer. Variations of bearing pressure factors (Ncf = q/cu1) for circular footings of diameter, D, are obtained at different settlement ratios (SR), for a wide range of RE. Results are validated with the Merifield and Nguyen (Geomech Geoengin 1:151–162, 2006) for considered cases of layered clays with different H/D. Variation of Ncf with stiffness ratio, RE, for different SR and H/D ratios are presented and analyzed.
Bearing Pressure of Foundation on Strong Layer Overlying Weak Clay Accounting for Compressibility
Lecture Notes in Civil Engineering
Jose, Babu T. (editor) / Sahoo, Dipak Kumar (editor) / Shin, Eun Chul (editor) / Choudhury, Deepankar (editor) / Joseph, Anil (editor) / Pai, Rahul R. (editor) / Himavarsha, Joga (author) / Shiva Bhushan, J. Y. V. (author) / Madhav, Madhira R. (author)
Indian Geotechnical Conference ; 2022 ; Kochi, India
2024-05-01
7 pages
Article/Chapter (Book)
Electronic Resource
English
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