2022 Fazlur R. Khan
Distinguished Lecture Series

Honoring a legacy in structural engineering and architecture  


Distinguished Lecturers    

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  BILLIE F. SPENCER, JR.
Nathan M. & Anne M. Newmark Endowed Chair in Civil Engineering, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign
 


 


Performance of Dynamically Excited Structures through Optimization and Monitoring

 



 

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STEPHEN J RESSLER
Professor Emeritus from the U.S. Military Academy (USMA) at
West Point, NY; 
Current President of the Lehigh Valley Section, American Society of Civil Engineers (ASCE);
Bethlehem, PA
  ADRIAN D SMITH
Partner, Adrian Smith + Gordon Gill Architecture,
Chicago, IL
  MITSUYOSHI AKIYAMA
Professor and Chair of the Department of Civil & Environmental Engineering,
Waseda University,
Tokyo, Japan


The Ashtabula Bridge Disaster and the Advent
of Civil Engineering Professionalism

 


Supertall Towers + Green Cities

 


Increasing the Resilience of Highway Bridges Under Multiple Hazards Including Earthquake, Tsunami, Corrosion and Climate Change



 

BILLIE F. SPENCER, JR.


Nathan M. & Anne M. Newmark Endowed Chair in Civil, Engineering Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign

Performance of Dynamically Excited Structures through Optimization and Monitoring

Friday, November 18, 2022– 4:30 pm

Location: Whitaker Lab 303, Lehigh University, 5 E. Packer Avenue, Bethlehem, PA
Lecture will also be live streamed, (must REGISTER HERE for live stream link)

Overview:

This lecture provides an overview of two efforts directed toward assessing and improving the performance of structures conducted by researchers in the Smart Structures Technology Laboratory at the University of Illinois at Urbana-Champaign. The first focuses on topology optimization of structures subjected to random dynamic loads. A general topology optimization framework is presented to accommodate directly the random dynamic nature of the excitation and the responses. The proposed framework is illustrated for seismically excited and wind excited buildings, as well as bridges subjected to random traffic loading. The second part of the lecture discusses recent advances in computer vision techniques as they apply to the problem of civil infrastructure inspection and monitoring. Inspection applications presented include identifying context such as structural components, characterizing local and global visible damage, and detecting changes from a reference image, with focus on rapid structural condition assessment of buildings and bridges after disasters. Monitoring applications discussed include static measurement of strain and displacement, as well as dynamic measurements of displacement and modal analysis. This research will ultimately lead to more effective performance of our civil infrastructure.

MORE DETAILS available on Spencer's presentation. (PDF)


 


 

STEPHEN J RESSLER

Professor Emeritus from the U.S. Military Academy (USMA) at West Point, NY; Current President of the Lehigh Valley Section, American Society of Civil Engineers (ASCE);
Bethlehem, PA

The Ashtabula Bridge Disaster and the Advent of Civil Engineering Professionalism

Friday, February 18, 2022– 4:30 pm

click here to view video

Overview:

Constructed in 1865, the 154-foot railroad truss bridge over the Ashtabula River in northeastern Ohio represented a unique and innovative response to the challenge of adapting traditional timber bridge-building techniques to a new and fundamentally different structural material—iron.  The Ashtabula Bridge served its purpose with minimal problems for eleven years.  But on the evening of December 29th, 1876, during a severe blizzard, the structure collapsed under the weight of a routine service loading—a passenger train pulled by two steam locomotives.  Tragedy then turned to unspeakable horror, as coal-fired heating stoves in the passenger coaches set the wreckage on fire.  Within minutes, many passengers who had survived the collapse perished in an uncontrollable blaze.  The official death toll was 92—but the actual number was probably much higher, because there was no reliable count of passengers on the train.  The Ashtabula Bridge disaster was America’s worst rail accident up until that time.  The event shocked the nation and prompted a rigorous response from the civil engineering professional community.  

In this lecture, we will examine the unique design of the Ashtabula Bridge, its troubled construction process, and the likely causes of the collapse.  We will also explore the surprising impact of this catastrophe on bridge design practice during a pivotal period when civil engineering was undergoing an important transition from a craft-based occupation to a profession.

MORE DETAILS available on Ressler's presentation. (PDF)


 

ADRIAN D SMITH

Partner, Adrian Smith + Gordon Gill Architecture, Chicago, IL

Supertall Towers + Green Cities

Friday, March 25, 2022 – 4:30 pm

click here to view video

Overview:

Adrian D. Smith, FAIA is one of the first American architects to design supertall buildings internationally. During his 50+-year career, his work has shown an evolving interest in the use of vernacular and indigenous forms and compositions together with state-of-the-art systems and technologies to integrate new buildings into the regional context. As a leading expert on the advanced technology of supertall towers and their impact on cities, this talk will explore projects that have effectively reduced negative environmental impacts, while simultaneously improving the overall quality of life in the city. His talk will feature major international projects including the Burj Khalifa, Jeddah Tower, and plans for a self-sustaining satellite city in China. 

MORE DETAILS availalable on Smith's presentation. (PDF)



 

MITSUYOSHI AKIYAMA

Professor and Chair of the Department of Civil & Environmental Engineering, Waseda University,
Tokyo, Japan

Increasing the Resilience of Highway Bridges Under Multiple Hazards Including Earthquake, Tsunami, Corrosion and Climate Change

Friday, April 29, 2022 – 4:30 pm

click here to view video

Overview:

After recent large earthquakes, such as the 2011 Great East Japan earthquake and 2016 Kumamoto earthquake, field investigations confirmed that several bridges were severely damaged and collapsed not only due to the earthquake, but also to the subsequent tsunami, landslide or fault displacement. In addition, long-term material deterioration might have an important impact on structural damage to bridges. Therefore, it is important to study multiple hazards and their effects on the reliability, risk and resilience of bridges and bridge networks. Although earthquake is still a dominant hazard to bridges in many earthquake-prone countries, a life-cycle reliability and risk approach has to consider all hazards causing bridge failure during the structure’s lifetime including climate change effect. Such an approach is presented in this lecture. In addition, issues on how to ensure the reliability, reduce the risk and enhance the resilience of bridges and bridge networks under multiple hazards are discussed. Finally, the concepts and methods presented are illustrated on both individual bridges and bridge networks.

MORE DETAILS availalable on Akiyama's presentation. (PDF)


 



1 PDH will be awarded to eligible attendees for each lecture


2022 Fazlur R. Khan Distinguished Lecture Series Poster
(PDF)

 

The Fazlur R. Khan Distinguished Lecture Series has been initiated and organized by Dan M. Frangopol, the first holder of Lehigh's Fazlur Rahman Khan Endowed Chair of Structural Engineering and Architecture.

Sears or Willis Tower

Willis (formerly Sears) Tower

The Fazlur R. Khan Distinguished Lecture Series honors Dr. Khan’s legacy of excellence in structural engineering and architecture.