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A platform for research: civil engineering, architecture and urbanism
Prediction of Shear Strength Parameter Using Basic Index Properties and Modelling the Behaviour of Prototype Riverbed Rockfill Material
In the present study, to verify the developed methods, modelled riverbed rockfill material from Tehri dam old dobatta borrow area, Uttarakhand, India has been considered, tested and studied the material behaviour. Using the developed methods, ϕ, E and ν are predicted for all the tested modelled rockfill and compared with the test results. From the comparison, it is observed that both results match closely. Therefore, ϕ, E and ν value of the prototype rockfill material are predicted using the proposed methods for designing the rockfill dam. The advantage of the proposed methods is to determine the material parameters using index properties viz. UCS, UVC and RD without conducting large size triaxial shear tests. Developed methods are more realistic, economical, can be used where large size triaxial testing facilities are not available. A quarter of the triaxial specimen with axisymmetric geometry has been modelled using hierarchical single surface (HISS) constitutive model and DSC-SST2D computer software. Stress–strain-volume change behaviour of tested modelled rockfill was back predicted and compared with the experimental results. From the comparison, it is observed that both results match closely. Predicted the stress–strain-volume change behaviour for prototype rockfill material, and it is observed that its behaviour also follows similar trend as that of modelled rockfill material. Therefore, it is proposed that HISS constitutive model can be used to characterize the riverbed rockfill material successfully.
Prediction of Shear Strength Parameter Using Basic Index Properties and Modelling the Behaviour of Prototype Riverbed Rockfill Material
In the present study, to verify the developed methods, modelled riverbed rockfill material from Tehri dam old dobatta borrow area, Uttarakhand, India has been considered, tested and studied the material behaviour. Using the developed methods, ϕ, E and ν are predicted for all the tested modelled rockfill and compared with the test results. From the comparison, it is observed that both results match closely. Therefore, ϕ, E and ν value of the prototype rockfill material are predicted using the proposed methods for designing the rockfill dam. The advantage of the proposed methods is to determine the material parameters using index properties viz. UCS, UVC and RD without conducting large size triaxial shear tests. Developed methods are more realistic, economical, can be used where large size triaxial testing facilities are not available. A quarter of the triaxial specimen with axisymmetric geometry has been modelled using hierarchical single surface (HISS) constitutive model and DSC-SST2D computer software. Stress–strain-volume change behaviour of tested modelled rockfill was back predicted and compared with the experimental results. From the comparison, it is observed that both results match closely. Predicted the stress–strain-volume change behaviour for prototype rockfill material, and it is observed that its behaviour also follows similar trend as that of modelled rockfill material. Therefore, it is proposed that HISS constitutive model can be used to characterize the riverbed rockfill material successfully.
Prediction of Shear Strength Parameter Using Basic Index Properties and Modelling the Behaviour of Prototype Riverbed Rockfill Material
Lecture Notes in Civil Engineering
Satyanarayana Reddy, C. N. V. (editor) / Muthukkumaran, K. (editor) / Satyam, Neelima (editor) / Vaidya, Ravikiran (editor) / Honkanadavar, N. P. (author)
2021-09-27
11 pages
Article/Chapter (Book)
Electronic Resource
English
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