Physical Modeling of Buried Explosion in Soils by Geotechnical Centrifuge

Funded by the Multidisciplinary University Research Initiatives (MURI) program by Office of Naval Research (ONR). Buried explosion is a complex phenomenon, involving high strain-rate soil dynamics, fluid dynamics, fractures, shocks and multi-scale physics. A comprehensive experimental program using geotechnical centrifuge modeling was conducted in conjunction with computational modeling using finite...

Centrifuge Study of the Seismic Response of Buried Reservoir Structures

The Los Angeles Department of Water and Power (LADWP) is currently replacing many of its open reservoirs with buried, reinforced-concrete structures to improve water quality. These underground structures in Southern California need to be designed to safely withstand seismic loading. The current state of practice for evaluating lateral seismic earth...

Shake table on platform

Toward a New Paradigm in Evaluating and Mitigating Urban Liquefaction

This Faculty Early Career Development (CAREER) grant will create a new approach for evaluating the behavior of clusters of buildings on liquefiable ground during earthquakes and pave the way toward designing mitigation measures that improve building performance at a system level. Earthquake-induced soil liquefaction can cause substantial damage to urban...

Centrifuge model post EQ1

NEESR: Seismic Response of Shallow Underground Structures in Dense Urban Environments

Shallow underground structures used for public transportation are a key component of sustainable cities. In dense urban environments, underground structures are often built near tall buildings. Although such buildings have the potential to alter ground motions in their vicinity and transmit significant forces to adjacent underground structures, the impact of...

WTI Deep Patch Repair Modelling

The Western Transportation Institue has conducted a series of modelling tests of deep patch repairing method used in Highway in our 400 g-ton centrifuge. The purpose of this project is to evaluate and improve current FHWA Office of Federal Lands Highway (FLH) and US Forest Service (USFS) deep patch design...

Tensile Testing of Wood Samples

Year: 2016 Participants: Paul Bennet, Prof. Wil Srubar and Derek Carpenter

The project team with a concrete column in the loading frame

Performance Assessment of Concrete Columns

Full Project Title: Experimental Performance Assessment of Nearly Full-Scale Reinforced Concrete Columns with Partially Debonded Longitudinal Reinforcement Year: 2016 Participants: Mohammad Taghi Nikoukalam, Prof. Petros Sideris and Derek Carpenter

A car sits mired in the mud next to a destroyed building in a Japanese town where earthquakes triggered mudslides

Earthquake reconnaissance: Students learn in Japan

June 24, 2016

Shideh Dashti, assistant professor of geotechnical engineering and geomechanics at CU-Boulder, co-led a scientific reconnaissance team mobilized by the Geotechnical Extreme Events Reconnaissance (GEER) Association to travel to Kumamoto-shi, Japan, after the two earthquakes that occurred on April 14 and 16.