Characterisation of lateral and vertical subsurface heterogeneity in the ground using sustainable seismic surface wave methodology

Madun, Aziman and Wijeyesekera, Devapriya Chitral and Ahmad Tajuddin, Saiful Azhar and Zainalabidin, Mohd Hazreek and Yunus, Riduan and Tajul Baharudin, Mohamad Faizal (2017) Characterisation of lateral and vertical subsurface heterogeneity in the ground using sustainable seismic surface wave methodology. Journal of Physics: Conference Series, 25 (NIL). pp. 169-176. ISSN 1742-6588

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Abstract

Seismic surface waves are a non-destructive technique used to obtain the dynamic properties of soil by measuring the shear wave velocity and calculating the shear modulus of soil. The shear modulus is one of the parameters to measure the stiffness of materials. This study evaluates soil profiles and the position of the sensor while conducting measurements of two , soil profiles, i.e. lateral and vertical nonhomogeneities, using a continuous surface wave analysis (CSW) and multi-channel analysis of surface waves (MASW). Results showed the dispersive curve demonstrated an increased shear wave velocity with increasing depth for the sensor pair measurements on the clay (between columns), and decreased shear wave velocity with increasing depth for the sensor pair measurements on the column. In both instances the surface wave velocity results influenced by the depth and size of the wavelength, indicating that depth and wavelength controlled the volume of measurement in an elliptical shape. Therefore, the shear wave velocities and thus stiffness measured from the surface wave velocity techniques are represented the volume of soil measured across the sensor length.

Item Type:	Article
Uncontrolled Keywords:	Continuous surface wave analysis; Multi-channel analysis of surface wave; Seismic surface wave testing; Site investigation
Subjects:	Q Science > QE Geology T Technology > TH Building construction
Divisions:	Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Building and Construction Engineering
Depositing User:	Miss Nur Rasyidah Rosli
Date Deposited:	16 Dec 2021 06:36
Last Modified:	16 Dec 2021 06:36
URI:	http://eprints.uthm.edu.my/id/eprint/4797

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