Proceedings-DFI-India 2016: 6th Conference on Deep Foundation Technologies for Infrastructure Development in India, (DFI)
Determination of Liquefaction in Time Domain Using Shake Table Test, Wavelet Analysis and Numerical Approach
Raj Banerjee, Bhabha Atomic Research Center, Mumbai, India, Aniruddha Sengupta and Rana Chattaraj, Indian Institute of Technology Kharagpur, West Bengal, India, G. R. Reddy, Bhabha Atomic Research Center, Mumbai. India
Earthquake induced liquefaction in saturated granular soils is an important phenomenon which causes severe damage to life and property. In the present study, dynamically induced liquefaction of saturated Kasai River sand is studied in 1-g shake table to assess its liquefaction potential. In the shake table, the soil was subjected to sinusoidal motions of amplitude 0.35g at a frequency of 2Hz. A numerical model using FLAC 2D (Itasca 2005) was performed to simulate the shaking table tests. Reasonably good agreement between the experimental and the numerical results has been observed. Moreover, wavelet analysis has been conducted to identify the occurrence of liquefaction in sand and to correlate the observations found from the experiments. The nonlinear curves used to represent shear strain dependency of stiffness of the Kasai River sand was obtained from cyclic tri axial tests.
|article #2205; publication #1020 (INDIA-2016)|