Shear and P-Wave Velocity Interrelation of Pilani Region Soil

Abstract

According to elastic rebound theory, earth’s crust behaves like an elastic medium. Due to earthquake, aerial bombardment or bomb-blast ground motion occurs resulting in stress waves. Shear wave as well as P-wave are two different type of stress waves. They are also called body waves because they travel through the earth. The propagation velocities of shear waves as well as P-waves are determined by the modulus of elasticity of the propagation medium like soil. Shear waves are quite damaging to geotechnical construction. Standard field based and lab based methods are available for shear wave velocity determination as well as estimation. All of them require complicated experimental setup. Laboratory based P-wave through soil determination is very simple on the other hand. In the present study, interrelation between shear wave velocity and P-wave velocity based on laboratory set-up has been studied for Pilani region. Exponential curve of best fit equation to obtain estimated value of shear wave velocity has been obtained knowing the P-wave velocity. Study is for Pilani region soil. Similar study can be undertaken at similar other regions also