Testing at E-Defense

This week – as part of the NSF-funded project “Collaborative Research: Frame-Spine System with Force-Limiting Connections for Low-Damage Seismic-Resilient Buildings” –  researchers from the University of Illinois, Lehigh University, Oregon State University, Kyoto University, Hokkaido University and E-Defense conducted full-scale building earthquake simulations on the shake table at the Hyogo Earthquake Engineering Research Center (E-Defense).  The four-story building employed a novel low-damage structural system and the building was furnished with hospital fixtures and equipment to evaluate protection of occupants and building contents.  The testing program concluded on December 17 with an earthquake simulation using an input acceleration record from the 1995 Kobe Earthquake (100% JMA Kobe video linked).  Due to the pandemic, researchers from the U.S. could not visit Japan for the tests, but with excellent communication and dedicated colleagues in Japan, the program was completed successfully!

Prof. Kurata (Kyoto University), Prof. Okazaki (Hokkaido University) and Dr. Kawamata (E-Defense) with Four-Story Test Building at E-Defense

Bridge Instrumentation in Progress

As part of Project R27-194: Evaluation of Spatial and Temporal Load Distribution in Steel Bridge Superstructures, sponsored by the Illinois Center for Transportation (ICT), instrumentation is currently being installed on two new bridges on Mattis Avenue in Champaign, over I-74 and I-57.  Subsequent monitoring over several years will provide new knowledge about behavior under daily traffic loading and longer-term structural response due to seasonal temperature changes.  This four-year grant is being led by Larry Fahnestock (PI), Jim LaFave (Co-PI) and Ph.D. student Sunny Zhou.

Strain Gage Installation at Regal Industrial Corporation

Placement of Instrumented Girders for Mattis Avenue Bridge over I-57

Instrumentation Installation at Mattis Avenue Bridge over I-57

 

New Research Project on Damaged Steel Girders

The Illinois Center for Transportation has funded a new research project to study damaged steel bridge girders.  R27-225: Strength and Serviceability of Damaged Steel Girders will develop fundamental understanding of damage in steel bridge girders due to vehicle strikes and translate that knowledge into a framework for structural inspection, assessment, and decision-making.  The research is being conducted by PI Larry Fahnestock and Co-PIs Ahmed Elbanna and Jim LaFave.

Alumni Spotlight – Steelman Promoted at Nebraska

Congratulations to Josh Steelman (PhD, 2013) for his recent promotion to Associate Professor in Civil and Environmental Engineering at the University of Nebraska – Lincoln!  Prof. Steelman’s areas of professional and research interest include: structural risk and reliability at the component, structure, and regional levels; response of structures to extreme events and innovative methods for structural protection; experimental investigation of structural response; performance-based evaluation and design of structures.  He is involved with the Midwest Roadside Safety Facility and is the PI for a new NCHRP project related to railing collision loads.

Zhou Passes Prelim

Congratulations to Siang (Sunny) Zhou on passing her PhD preliminary exam!  Sunny is co-advised by Prof. Larry Fahnestock and Prof. James LaFave, and she is studying superstructure response and load distribution in skewed steel girder bridges under thermal and traffic loading as part of a project sponsored by the Illinois Center for Transportation.  Best wishes to Sunny as she continues her research!

Paper on Bolted Angle Connections

A new paper, which documents an extensive experimental program that was conducted to characterize the nonlinear response of bolted steel angles, is now available online:

Beland, T., Bradley, C.R., Nelson, J., Sizemore, J.G., Davaran, A., Tremblay, R., Hines, E.M. and Fahnestock, L.A. “Experimental parametric characterization of bolted angle connection behavior,” Journal of Structural Engineering, ASCE, August 2020, 146 (8): 04020160.  dx.doi.org/10.1061/(ASCE)ST.1943-541X.0002662