Development of force-limiting deformable connection for earthquake-resistant buildings

Click on the poster to enlarge

In 2011, the PIs Robert B. Fleischman, Richard Sause, and José I. Restrepo, recruited researchers to work on their vision outlined in the project entitled NEESR: Inertial Force-Limiting Floor Anchorage Systems for Seismic Resistant Building Structures funded by the National Science Foundation (Award No. CMMI-1135033) and the George E. Brown, Jr. Network for Earthquake Engineering Simulation Research (NEESR) program (Award No. CMS-0402490).

Under the supervision of Prof. Richard Sause at Lehigh University, Georgios Tsampras conducted research focusing on one of the goals of the above project. This goal and the associated objectives are outlined below:

Goal

Develop and evaluate a deformable connection that limits the earthquake-induced horizontal inertial forces transferred from each floor of the flexible gravity load resisting system to the stiff lateral force resisting system of an earthquake-resistant buildings.

Objectives

  • Create physical embodiments of the force-limiting deformable connection

  • Assess experimentally the force-limiting deformable connection experimentally

  • Develop a preliminary force-based design procedure for the force-limiting deformable connections

  • Validate the preliminary design procedure for the force-limiting deformable connection using numerical earthquake simulations

The poster on the left summarizes visually the objectives of the project.

Relevant Publications

Georgios Tsampras, Richard Sause, Robert B. Fleischman, José I. Restrepo (2017) Experimental study of deformable connection consisting of friction device and rubber bearings to connect floor system to lateral force resisting system, Earthquake Engineering & Structural Dynamics, 47 (4), 1032-1053, doi: 10.1002/eqe.3004

Georgios Tsampras, Richard Sause, Robert B. Fleischman, José I. Restrepo (2016), Experimental study of deformable connection consisting of buckling-restrained brace and rubber bearings to connect floor system to lateral force resisting system, Earthquake Engineering & Structural Dynamics, 46 (8), 1287-1305, DOI:10.1002/eqe.2856

Georgios Tsampras, Richard Sause, Dichuan Zhang, Robert B. Fleischman, José I. Restrepo, David Mar, Joseph Maffei (2016), Development of deformable connection for earthquake-resistant buildings to reduce floor accelerations and force responses, Earthquake Engineering & Structural Dynamics, 45 (9), 1473–1494, doi:10.1002/eqe.2718

Tsampras, Georgios. “Force-Limiting Floor Diaphragm Connection for Earthquake-Resistant Buildings.” PhD, Lehigh University, 2016. https://preserve.lehigh.edu/etd/2851.

Tsampras, Georgios; Sause, Richard, (2014), "Full-scale, components test of Inertial Force-Limiting Floor Anchorage Systems for Seismic Resistant Building Structures using a Buckling Restrained Brace and Steel Reinforced Low Damping Rubber Bearings", DesignSafe-CI [publisher], doi: 10.4231/D3N87311M

https://www.designsafe-ci.org/data/browser/public/nees.public/NEES-2011-1083.groups/Experiment-2

Tsampras, Georgios; Sause, Richard, (2014), "Full-scale, components test of Inertial Force-Limiting Floor Anchorage Systems for Seismic Resistant Building Structures using a Friction Device and Carbon Fiber Reinforced Low Damping Rubber Bearings", DesignSafe-CI [publisher], doi: 10.4231/D3HH6C68B

https://www.designsafe-ci.org/data/browser/public/nees.public/NEES-2011-1083.groups/Experiment-3

Georgios Tsampras, Richard Sause, Robert Fleischman, José I. Restrepo, Zhi Zhang, Ulina Shakya, Dichuan Zhang, Joseph Maffei, David Mar (2018), Experimental study of connection between floor system and lateral force resisting system, 11th National Conference on Earthquake Engineering, CA, USA

Georgios Tsampras, Richard Sause, Robert B. Fleischman, José I. Restrepo, Dichuan Zhang (2015) Deformable connection for earthquake-resistant building systems, JAEE International Symposium on Earthquake Engineering, Tokyo, Japan

Georgios Tsampras, Richard Sause, Robert B. Fleischman, José I. Restrepo (2015) An earthquake-resistant building system to reduce floor accelerations, NZSEE15 Conference, New Zealand, Rotorua

Media

TEAM

Principal Investigators

Post-Doctoral Researcher

Doctoral Students

Staff

  • NEES@Lehigh staff and ATLSS Center staff

ACKNOWLEDGEMENTS

This research is based upon work supported by grants from the National Science Foundation, award no. CMMI-1135033 in the George E. Brown, Jr. Network for Earthquake Engineering Simulation Research (NEESR) program and award no. CMMI-0402490 for the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) consortium operations. Georgios Tsampras is grateful for additional financial support provided by the Gerondelis Foundation, Yen Fellowship, and Lehigh University. The contributions of Dr. Joe Maffei, Mr. David Mar, Dr. Shivaglal Cheruvalath, and the NEES@Lehigh and ATLSS Center staff are acknowledged. The authors appreciate the contribution of the companies DYMAT, Star Seismic® (currently a CoreBrace company), and Scan-Pac Mfg, Inc. Any opinions, findings, and conclusions expressed in this research are those of the research team members and do not necessarily reflect the views of the National Science Foundation or others acknowledged here.