Papers Published

Two new papers are now available online in the “Just Released” section of the ASCE Journal of Structural Engineering:

  • Abrams, D., Fahnestock, L., and Gregor, T. (2015). “Measured Seismic Behavior of Hybrid Masonry Structural Systems.” J. Struct. Eng., 10.1061/(ASCE)ST.1943-541X.0001406, 04015168.
  • Stoakes, C. and Fahnestock, L. (2016). “Strong-Axis Stability of Wide Flange Steel Columns in the Presence of Weak-Axis Flexure.” J. Struct. Eng., 10.1061/(ASCE)ST.1943-541X.0001448, 04016004.

The hybrid masonry research was supported by the National Science Foundation under Grant No. CMMI 0936464 as part of the George E. Brown, Jr. Network for Earthquake Engineering Simulation.  Additional support was provided by the American Institute of Steel Construction, the National Concrete Masonry Association, and the International Masonry Institute.

The column stability research was partially supported by the American Institute of Steel Construction.

Bridge Bearing Paper Published

A paper on PTFE sliding bearings has been published in the Journal of Bridge Engineering:

  • Steelman, J., Fahnestock, L., Hajjar, J., and LaFave, J. “Performance of Nonseismic PTFE Sliding Bearings When Subjected to Seismic Demands.” J. Bridge Eng., ASCE, 21 (1) 2016. dx.doi.org/10.1061/(ASCE)BE.1943-5592.0000777, 04015028.

The work described in this paper is part of the project Calibration and Refinement of Illinois’ Earthquake Resisting System Bridge Design Methodology, which is sponsored by the Illinois Center for Transportation.

Structural Integrity Large-Scale Testing Paper Published

A new paper is now published in the ASCE Journal of Structural Engineering on the large-scale testing program investigating structural integrity of steel-concrete composite floor systems.

  • Johnson, E., Meissner, J., and Fahnestock, L. (2015). “Experimental Behavior of a Half-Scale Steel Concrete Composite Floor System Subjected To Column Removal Scenarios.” J. Struct. Eng., 10.1061/(ASCE)ST.1943-541X.0001398,04015133.

Tornado Reconnaissance Paper Published

A new paper is now published in the ASCE Journal of Performance of Constructed Facilities on the investigation undertaken by Prof. James LaFave and Prof. Larry Fahnestock following the EF5 tornado that occurred on May 20, 2013 in Moore, Oklahoma.  Their trip was sponsored by the CEE Rapid Response Grant Program, which is designed to support high-impact research related to infrastructure improvement and societal risk management in the wake of disasters.  Following the reconnaissance trip, CEE REU students Zhengboyang Gao, Donovan Holder and Michael Kuo assisted with data analysis, synthesis and documentation.

  • LaFave, J.M., Gao, Z., Holder, D.E., Kuo, M.J. and Fahnestock, L.A. “Commercial and Residential Building Performance during the May 20, 2013, Tornado in Moore, Oklahoma,” Journal of Performance of Constructed Facilities, ASCE. dx.doi.org/ 10.1061/(ASCE)CF.1943-5509.0000722

Paper in Journal Special Issue

A paper on steel fixed bearings has been published in the Journal of Bridge Engineering Special Issue on Recent Advances in Seismic Design, Analysis, and Protection of Highway Bridges:

  • Steelman, J.S., Filipov, E.T., Fahnestock, L.A., Revell, J.R., LaFave, J.M., Hajjar, J.F. and Foutch, D.A. “Experimental Behavior of Steel Fixed Bearings and Implications for Seismic Bridge Response,” Journal of Bridge Engineering, ASCE, 19 (8) 2014. dx.doi.org/10.1061/(ASCE)BE.1943-5592.0000540

The work described in this paper is part of the project Calibration and Refinement of Illinois’ Earthquake Resisting System Bridge Design Methodology, which is sponsored by the Illinois Center for Transportation.

Bridge Bearing Report Published

Research Report No. FHWA-ICT-13-002 Experimental Investigation of the Seismic Response of Bridge Bearings is now published and available online.  The report, which is authored by J. LaFave, L. Fahnestock, D. Foutch, J. Steelman, J. Revell, E. Filipov and J. Hajjar, describes an extensive full-scale bearing testing program that was conducted as part of the project Calibration and Refinement of Illinois’ Earthquake Resisting System Bridge Design Methodology.

In addition, a subset of this bearing testing program is reported in the July 2013 issue of the ASCE Journal of Bridge Engineering:

  • Steelman, J.S., Fahnestock, L.A., Filipov, E.T., LaFave, J.M., Hajjar, J.F. and Foutch, D.A. “Shear and Friction Response of Non-Seismic Laminated Elastomeric Bridge Bearings Subject to Seismic Demands,” Journal of Bridge Engineering, ASCE, 18 (7): 612-623, (2013). dx.doi.org/doi:10.1061/(ASCE)BE.1943-5592.0000406

New Papers on Bridge Quasi-Isolation

Two paper were recently published on seismic behavior and performance of quasi-isolated bridges:

  • Filipov, E.T., Fahnestock, L.A., Steelman, J.S., LaFave, J.M., Hajjar, J.F. and Foutch, D.A. “Evaluation of Quasi-Isolated Seismic Bridge Behavior using Nonlinear Bearing Models,” Engineering Structures, 49 (2013) 168-181. dx.doi.org/10.1016/j.engstruct.2012.10.011
  • Filipov, E.T., Revell, J.R., Fahnestock, L.A., LaFave, J.M., Hajjar, J.F., Foutch, D.A. and Steelman, J.S. “Seismic Performance of Highway Bridges with Fusing Bearing Components for Quasi-Isolation,” Earthquake Engineering and Structural Dynamics, 42 (9): 1375-1394, (2013). dx.doi.org/10.1002/eqe.2277

The work described in these papers is part of the project Calibration and Refinement of Illinois’ Earthquake Resisting System Bridge Design Methodology, which is sponsored by the Illinois Center for Transportation.