ATLSS Engineering Research Center
at Lehigh University
Welcome to Lehigh University’s Advanced Technology for Large Structural Systems (ATLSS) Engineering Research Center. Led by Bruce G. Johnston Professor of Structural Engineering, James Ricles, Ph.D., P.E., ATLSS is a nationally recognized hub for research and education in infrastructure structures and materials. Explore our people, projects, programs, and educational opportunities to discover how ATLSS can support your goals and benefit your organization.
News

ATLSS announces leadership transition
Two researchers in Lehigh University’s Advanced Technology for Large Structural Systems (ATLSS) Engineering Research Center will take on new leadership roles effective July 1, 2024.

NHERI Stories: Diverse Paths to Engineering
Early-Career Researcher Alia Amer is all about Resilience – in Large-Scale Structures and in the Engineering Profession.
NHERI Lehigh Researcher Workshop: Mitigation of Natural Hazards Through Component Testing, Advanced Simulation, and Large-Scale Multi-Directional Experiments
Registration is now open for the NHERI Lehigh Researcher Workshop: Mitigation of Natural Hazards Through Component Testing, Advanced Simulation, and Large-Scale Multi-Directional Experiments on November 17th and 18th at the ATLSS Center

Frangopol wins inaugural EuroStruct International Award of Merit
Professor Dan M. Frangopol is the winner of the EuroStruct2023 International Award of Merit presented by the EuroStruct Executive Committee in recognition of outstanding contributions to bridge and structural asset management and structural engineering.

NHERI Lehigh Testing Shows Effectiveness of Rolling Pendulum Isolation Systems in EQ Damage Mitigation
Tests of a rolling-pendulum base-isolation system were performed as part of NSF award CAREER: Mitigation of Seismic Risk to Critical Building Contents via Optimum Nonlinear 3D Isolation (PI- Scott Harvey, University of Oklahoma, award #1943917). The work involved multi-directional real-time hybrid simulations (RTHS) of a rolling pendulum system for seismically isolating equipment in mission-critical buildings.

How Do Powerful Winds Affect Tall Buildings?
Lehigh researchers co-organize and host a collaborative workshop to demonstrate advancements in hybrid simulation to investigate how high winds impact the structural integrity of a 40-story building.
U.S. DOT highlights Lehigh research on use of corrosion-resistant steel in extending lifespan of bridges
ATLSS Professor Dan Frangopol, Lehigh’s inaugural Fazlur R. Khan Endowed Chair of Structural Engineering and Architecture, recently completed research projects focused on the use of corrosion-resistant steel in bridge repair and maintenance. These projects were featured in the January 2023 UTC Spotlight newsletter by the United States Department of Transportation.
Mentoring the Next Generation of Structural Leaders
A Lehigh civil engineering student team, guided by faculty mentor Prof. Clay Naito, won the Best Video Award in the 2022 Precast/Prestressed Concrete Institute (PCI) Engineering Design Competition. PCI’s “Big Beam competition,” now in its 22nd year, teaches college students from across the United States structural engineering skills in an applied learning environment.
Collingwood Prize honors finite-element fatigue analysis paper
ASCE has honored the writing team of Joseph Saunders, Ph.D., A.M.ASCE; Yixin Chen, S.M.ASCE; Jayne A. Marks, P.E., M.ASCE; Ian C. Hodgson, P.E., S.E., M.ASCE; Richard Sause, Ph.D., P.E., M.ASCE; and Brian M. Kozy, Ph.D., P.E., M.ASCE, with the 2022 Collingwood Prize for the paper “Finite-Element Fatigue Analysis of a New Rib-to-Floor Beam Connection for Orthotropic Steel Decks,” Journal of Bridge Engineering, Feb. 2021.

Expanding ATLSS Cyber-Physical Testing Capabilities
The NHERI Lehigh University Experimental Facility recently unveiled expanded lab space and new equipment for conducting cyber-physical experiments. The enlarged facility opens the door wide for natural hazards researchers to explore structural mitigation solutions for windstorms and earthquakes. Part of the National Science Foundation-funded Natural Hazards Engineering Research Infrastructure, the NHERI Lehigh Experimental Facility specializes in cyber-physical testing, a broad term that encompasses hybrid simulation, including real-time, multi-directional hybrid simulation experiments. READ MORE >>