Location
San Diego, California
Presentation Date
29 May 2010, 8:00 am - 9:30 am
Abstract
Earthquake activities in the many parts of world had shown the importance of local soil condition in the propagated wave motion. In this paper an attempt has been made to estimate site effects of deep soil column in Lucknow, Indo-Gangetic basin for scenario earthquakes at Himalayan plate boundary. Based on previous study, the synthetic ground motion has been generated using Stochastic Finite Fault model (FINSIM) for two scenario earthquakes at seismic gaps. One seismic gap called as western location/seismic gap is located about 307.88km from site and gives the peak ground acceleration of 0.11g at site. Another one is the Central seismic gap/location is located in central seismic gap at 229.77km from the site and gives the Peak Ground Acceleration (PGA) of 0.218g. The local soil layer details with standard penetration test N value have been collected for the main location in Lucknow from literates. The general soil found for this site is silty sand and silty clays having SPT N value up to above 100 up to a depth of 30m. The soil details extrapolated up to 100m by assuming linear variation from 30 m. The site response analysis has been carried out using equivalent linear and non linear approaches by employing SHAKE 2000 and Deep soil program. Input has been assigned at 30m 50, 75 and 100m to find effective depth of input motion. This study shows that the ground motions are being amplified within a depth of 50 to 80 m, but these results need to be further confirmed with large number of data. The input ground motions are amplified 1.06 to 2.5 times due to the soil condition.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Anbazhagan, P.; Kumar, Abhishek; and Sitharam, T. G., "Site Response Study of Deep Soil Column in Lucknow, India" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 11.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session03b/11
Included in
Site Response Study of Deep Soil Column in Lucknow, India
San Diego, California
Earthquake activities in the many parts of world had shown the importance of local soil condition in the propagated wave motion. In this paper an attempt has been made to estimate site effects of deep soil column in Lucknow, Indo-Gangetic basin for scenario earthquakes at Himalayan plate boundary. Based on previous study, the synthetic ground motion has been generated using Stochastic Finite Fault model (FINSIM) for two scenario earthquakes at seismic gaps. One seismic gap called as western location/seismic gap is located about 307.88km from site and gives the peak ground acceleration of 0.11g at site. Another one is the Central seismic gap/location is located in central seismic gap at 229.77km from the site and gives the Peak Ground Acceleration (PGA) of 0.218g. The local soil layer details with standard penetration test N value have been collected for the main location in Lucknow from literates. The general soil found for this site is silty sand and silty clays having SPT N value up to above 100 up to a depth of 30m. The soil details extrapolated up to 100m by assuming linear variation from 30 m. The site response analysis has been carried out using equivalent linear and non linear approaches by employing SHAKE 2000 and Deep soil program. Input has been assigned at 30m 50, 75 and 100m to find effective depth of input motion. This study shows that the ground motions are being amplified within a depth of 50 to 80 m, but these results need to be further confirmed with large number of data. The input ground motions are amplified 1.06 to 2.5 times due to the soil condition.
