Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Liquefaction Potential of Sandy Soil from Cyclic Simple Shear Test—A Case Study
The most common cause of ground failure during earthquakes is the liquefaction phenomenon. This paper deals with estimating the liquefaction potential of soils obtained from difficult terrain conditions with high degree of soil heterogeneity. Case study of Shahpurkandi Dam, Punjab, has been considered, studied, and presented. Samples of sandy soil collected from foundation with depth ranging from 8.5 to 20.0 m were studied for grain size analysis, relative density, liquid limit, plastic limit, and plasticity index and discussed in this paper. Undrained cyclic simple shear tests were examined on saturated specimens with confining pressure ranging from 0.1 to 0.4 MPa for determining cyclic strength to cause liquefaction. Seed’s procedure has been used to find out cyclic stresses induced by different earthquake magnitudes of 6.0 and 8.0 with their respective peak ground acceleration (PGA) values of 0.17 g and 0.20 g. It is observed that the cyclic strength in all the cases is more than the cyclic stresses induced. Hence, the foundation is not susceptible to liquefaction except for depth at 8.50 m for a magnitude 8.0, where sand deposit is found to liquefy. To avoid liquefaction, it was suggested to consolidate the foundation, so as to increase the cyclic strength to nullify the liquefaction. Higher PGA value of 0.24 g was also employed to understand liquefaction potential at various depths. Therefore, cyclic strength of soil should always be more than induced cyclic stress to conclude that the deposit is sufficiently dense and not susceptible to liquefaction.
Evaluation of Liquefaction Potential of Sandy Soil from Cyclic Simple Shear Test—A Case Study
The most common cause of ground failure during earthquakes is the liquefaction phenomenon. This paper deals with estimating the liquefaction potential of soils obtained from difficult terrain conditions with high degree of soil heterogeneity. Case study of Shahpurkandi Dam, Punjab, has been considered, studied, and presented. Samples of sandy soil collected from foundation with depth ranging from 8.5 to 20.0 m were studied for grain size analysis, relative density, liquid limit, plastic limit, and plasticity index and discussed in this paper. Undrained cyclic simple shear tests were examined on saturated specimens with confining pressure ranging from 0.1 to 0.4 MPa for determining cyclic strength to cause liquefaction. Seed’s procedure has been used to find out cyclic stresses induced by different earthquake magnitudes of 6.0 and 8.0 with their respective peak ground acceleration (PGA) values of 0.17 g and 0.20 g. It is observed that the cyclic strength in all the cases is more than the cyclic stresses induced. Hence, the foundation is not susceptible to liquefaction except for depth at 8.50 m for a magnitude 8.0, where sand deposit is found to liquefy. To avoid liquefaction, it was suggested to consolidate the foundation, so as to increase the cyclic strength to nullify the liquefaction. Higher PGA value of 0.24 g was also employed to understand liquefaction potential at various depths. Therefore, cyclic strength of soil should always be more than induced cyclic stress to conclude that the deposit is sufficiently dense and not susceptible to liquefaction.
Evaluation of Liquefaction Potential of Sandy Soil from Cyclic Simple Shear Test—A Case Study
Lecture Notes in Civil Engineering
Jose, Babu T. (Herausgeber:in) / Sahoo, Dipak Kumar (Herausgeber:in) / Oommen, Thomas (Herausgeber:in) / Muthukkumaran, Kasinathan (Herausgeber:in) / Chandrakaran, S. (Herausgeber:in) / Santhosh Kumar, T. G. (Herausgeber:in) / Maurya, Suresh (Autor:in) / Chakraborty, Uday B. (Autor:in) / Honkanadavar, N. P. (Autor:in)
Indian Geotechnical Conference ; 2022 ; Kochi, India
Proceedings of the Indian Geotechnical Conference 2022 Volume 6 ; Kapitel: 18 ; 215-230
23.07.2024
16 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
| British Library Online Contents | 2015
| DOAJ | 2023
Evaluation of Dynamic Properties and Liquefaction Studies for Sandy Soil—A Case Study
| Springer Verlag | 2021