You are cordially invited, if in Slovenia on that day, to join us at the main building of UL FGG, Jamova c. 2, Ljubljana (Svečana Hall in 2nd Floor) at 1 pm on August 31, 2022 for a lecture entitled: “Impact of seismic shaking in triggering instability at marginalized urban settlement”.
The talk will be given by Professor Binod Tiwari, PhD, P.E., F. ASCE, from the California State University, Fullerton, USA.
Professor Tiwari is Professor of Civil and Environmental Engineering and serves as Associate Vice President in the Office of Research and Sponsored Projects, CSU.
He is also Vice President for Americas of the International Consortium on Landslides (ICL), Kyoto, Japan.
Professor Tiwari recently received National Recognition for Mentorship, Commitment to Civil Engineering from the American Society of Civil Engineers (ASCE).
Short summary of the lecture:
To accommodate the housing demand, marginalized lands and river banks have been converted into residential area in many towns/cities globally. If such conversions are done in unplanned way, it can be disastrous during extreme events such as heavy rainfall and earthquakes. This presentation includes a case study where a settlement developed at or near stream banks as well as connecting infrastructure were fully or partially damaged during an earthquake event. At this case study site, large ground fissures and tension cracks with vertical offsets in excess of 1 m, were observed along a ridge for a distance of about 1 km. The presenter and his team conducted a post-earthquake engineering field reconnaissance of the affected areas, surveyed the topography of the site, performed subsurface explorations, conducted in situ shear strength tests, and performed dynamic simple shear as well as bender element tests, on soil samples from the site. Additionally, numerical analyses were performed to understand the seismic vulnerability of the site. The numerical geomechanical modeling shows the importance of considering various in-situ and soil parameters to evaluate the most likely ground behavior during earthquake. Results of this study provide a valuable case history of moderate seismic shaking and landslide movement, which may be used by researchers for the calibration of simplified Newmark models.