Shear wave velocity (Vs) is a fundamental parameter in soil dynamics and earthquake engineering, crucial for site characterization and seismic microzonation studies. This study focuses on comprehensive Vs analysis using the Multichannel Analysis of Surface Waves (MASW) technique in Warangal district, which falls within seismic zones II and III according to India’s seismicity zonation map. A total of 65 MASW tests were conducted at 41 different locations across the district using SeisImager/SW software. The obtained Vs profiles and subsurface data reveal the variability of Vs30 (average shear wave velocity at 30 m depth) across the region, classifying most of Warangal as Earthquake Hazards Reduction Program and International Building Code, class C soil, with some areas near the Godavari River basin classified as class D. Additionally, variations in Vs at shallower depths (5, 10, 15, 20, 25, and 30 m) were mapped to provide a detailed understanding of the subsurface conditions.

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Comprehensive Shear Wave Velocity Analysis for Seismic Characterization: A Case Study in Warangal District

  • G. Abhishek Kumar,
  • M. Madhusudhan Reddy,
  • G. Kalyan Kumar

摘要

Shear wave velocity (Vs) is a fundamental parameter in soil dynamics and earthquake engineering, crucial for site characterization and seismic microzonation studies. This study focuses on comprehensive Vs analysis using the Multichannel Analysis of Surface Waves (MASW) technique in Warangal district, which falls within seismic zones II and III according to India’s seismicity zonation map. A total of 65 MASW tests were conducted at 41 different locations across the district using SeisImager/SW software. The obtained Vs profiles and subsurface data reveal the variability of Vs30 (average shear wave velocity at 30 m depth) across the region, classifying most of Warangal as Earthquake Hazards Reduction Program and International Building Code, class C soil, with some areas near the Godavari River basin classified as class D. Additionally, variations in Vs at shallower depths (5, 10, 15, 20, 25, and 30 m) were mapped to provide a detailed understanding of the subsurface conditions.