Comprehensive amplification estimation of the Indo Gangetic Basin deep soil sites in the seismically active area

Bajaj, Ketan and Anbazhagan, P (2019) Comprehensive amplification estimation of the Indo Gangetic Basin deep soil sites in the seismically active area. In: SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, 127 .

PDF Soi_Dyn_Ear_Eng_127.pdf - Published Version Restricted to Registered users only Download (10MB) | Request a copy

Abstract

Site amplification coefficients and acceleration design response spectra (ADRS) for the deep Indo-Gangetic Basin (IGB) have been proposed. Non-linear site response analysis is carried out at 275 deep shear wave velocity (V-S) profiles by selecting the input motion based on seismic hazard map for 10% probability of exceedence in 50 years. The spatial variation map of peak ground acceleration (PGA) and spectral acceleration (SA) at surface and various depths for the JOB are also presented. The bedrock PGA of 0.03-0.24 g increased to 0.1-0.97 g at surface and 0.05-0.35 g at a depth of 150 m. Maximum SA is observed between 0.08 s and 0.5 sec. The new site factors viz. F-a and F-v are derived for newly defined spectral period range. Further, ADRS is constructed which depends on PGA and seismic site class as per NEHRP. Proposed ADRS is compared with different deep basin studies and BIS:1893.

Item Type:	Journal Article
Publication:	SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
Publisher:	ELSEVIER SCI LTD
Additional Information:	copy right of this article belong to ELSEVIER SCI LTD
Keywords:	Deep basin; Seismic site classification; Amplification; Seismic site factors; Acceleration design response spectra; Site response study
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	09 Dec 2019 09:56
Last Modified:	09 Dec 2019 09:56
URI:	http://eprints.iisc.ac.in/id/eprint/63918

Actions (login required)

View Item