COMPARATIVE STUDY OF SHEAR WAVE VELOCITY USING FIELD AND LABORATORY TESTS

Abstract

A comparative study of shear wave velocity between field and laboratory tests has been proposed in the present study. The bender element test was adopted for laboratory test while MASW and SPT tests for field measurement for shear wave velocity. In MASW seismic waves is created through hammering and the velocities of these waves analysed and then finally the shear wave velocity (Vs) with the depth is deduced. In Bender Element, both transmitter and receiver of shear wave is used. The shear wave velocity has been investigated at the shallow depth for four different sites i.e. Solani riverbed, Bahadrabad, Haridwar and Bhagwanpur within Roorkee-Haridwar region. Samples from different depths have been collected using SPT and tested using Bender Element. Also SPT N-value is recoded. This has been done by Kirar (2016) and data from that study is used here. While MASW is conducted on the same sites to determine the shear wave velocity. In this work, the shear wave velocity (Vs) using SPT, MASW and Bender Element are compared and analysed. A regression analysis has been carried out to establish a correlation between field and laboratory shear wave