Probabilistic seismic hazard analysis with nonlinear site response and liquefaction potential evaluation for deep sedimentary deposits
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Rahman, Md. Zillur
issued: 2019-01-28T16:30:00Z
issued: 2019
related degree: Doctor of Philosophy - PhD
degree grantor: University of British Columbia
description: Seismic hazard analysis includes deterministic or probabilistic seismic hazard analysis (DSHA or PSHA), site response analysis, and liquefaction potential evaluation. In the present study, probabilistic ground motion maps were prepared at bedrock condition for Bangladesh by using ground motion prediction equations (GMPEs) as a function of earthquake magnitudes and distances from the sources. The seismic sources have been modeled as background seismicity, crustal fault, and subduction zone. The uncertainties in the source parameters and GMPEs were accounted for using the logic tree approach. The activity rates of the background and regional seismicity sources were estimated using a declustered and complete earthquake catalog. The activity rates of the crustal fault and subduction zone sources were predicted from the geodetic strain rates using the well-accepted relationships. The Vs30 (time-averaged shear wave velocity in the top 30 m) map for Dhaka City was prepared using the relationship between the Vs30 and Holocene soil thickness to estimate site coefficients. The Vs30-based site coefficients and one-dimensional linear, equivalent-linear, and nonlinear site response analysis approaches have been used to evaluate the site effects of the deep sedimentary deposits in Dhaka City. The one-dimensional nonlinear site response analysis improves the accuracy of the ground motion. The site response analysis has to be performed using the soil profile down to the depth of the bedrock. In areas of thick and soft Holocene deposits, the long period seismic waves of the far-field earthquakes will amplify and the resonance will occur with the natural periods of the high-rise buildings, and consequently, the damage to high-rise buildings will be increased in these areas. The short period seismic waves of the near-field earthquakes will amplify in the artificially filled shallow valleys of the Pleistocene Terrace and the resonance will occur with the natural periods of the low-rise…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/68289
note: PROBABILISTIC SEISMIC HAZARD ANALYSIS WITH NONLINEAR SITE RESPONSE AND LIQUEFACTION POTENTIAL EVALUATION FOR DEEP SEDIMENTARY DEPOSITS by Md. Zillur Rahman M. Sc., ITC, University of Twente, The Netherlands, 2005 M. Sc., University of Dhaka, Bangladesh, 1993 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE COLLEGE OF GRADUATE STUDIES (Civil Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) January 2019 © Md. Zillur Rahman, 2019ii The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis/dissertation entitled: PROBABILISTIC SEISMIC HAZARD ANALYSIS WITH NONLINEAR SITE RESPONSE AND LIQUEFACTION POTENTIAL EVALUATION FOR DEEP SEDIMENTARY DEPOSITS submitted by Md. Zillur Rahman in partial fulfillment of the requirements of the degree of Doctor of Philosophy (PhD) Dr. Sumi Siddiqua, School of Engineering Supervisor Dr. Ahmad Rteil, School of Engineering Supervisory Committee Member Dr. A. S. M. Maksud Kamal, University of Dhaka Supervisory Committee Member Dr. Rudolf Seethaler, School of Engineering University Examiner Dr. Nicholas Vlachopoulos, Royal Military College of Canada External Examiner iii Abstract Seismic hazard analysis includes deterministic or probabilistic seismic hazard analysis (DSHA or PSHA), site response analysis, and liquefaction potential evaluation. In the present study, probabilistic ground motion maps were prepared at bedrock condition for Bangladesh by using ground motion prediction equations (GMPEs) as a function of earthquake magnitudes and distances from the sources. The seismic sources have been modeled as background seismicity, crustal fault, and subduction zone. The uncertainties in the source parameters and GMPEs were accounted for using the logic tree approach. The activity rates of the background and regional seismicity sources were estimated using a declustered and complete earthquake catalog. The act…
has type: Thesis/Dissertation
date issued: 2019-02
is shown at: 10.14288/1.0376189
language: eng
degree discipline: Civil Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/68289