Materials- Design & Construction

Single Abstract

343066 - Reinforcement of Masonry Structures for Seismic Loading

Friday, April 20
9:30 AM - 10:30 AM
Location: 202A

Masonry structures are widespread across the United States and the world. Most architectural heritage buildings in western countries are constructed using solid masonry—either stone or brick. Masonry constitutes a low-cost system requiring extensive workmanship but economical materials and is widely used in the developing parts of the globe. Yet, masonry buildings perform badly under seismic loading. During the 2016 earthquake in Italy numerous heritage buildings collapsed. The year before, in April 2015, an earthquake caused many houses and schools to collapse in Nepalese villages. These events led to major losses of human lives and of cultural heritage. It is urgent to develop a simple and practical way to reinforce masonry buildings so that they can withstand seismic loading. Non-invasive and economical systems that do not alter the character of ancient buildings and that can be easily implemented in poor countries are needed. Reinforcement of solid masonry has remained relatively unexplored. Attempts to address this deficiency have multiplied over the past decades but this remains an ill-mastered field for which no standard procedures exist.
This paper presents a study of simply implementable masonry reinforcement system that uses synthetic textile fabric. A reinforcement system is proposed and studied through numerical analysis first. Several masonry specimens implementing the textile fabric reinforcement are then constructed and tested on a shake table. The results from the numerical analysis and the physical testing are compared and found to be in good agreement. The findings suggest that textile fabric reinforcement provides a significant improvement in the lateral load resisting capacity of masonry structures. The system can be designed and implemented relatively easily and economically on both existing and new building to enhance their seismic resistance making it a valuable resource in poor countries and countries with heritage structures.

Alessandro Beghini

Associate Director
Skidmore, Owings & Merrill, LLP

Alessandro Beghini is currently a Structural Associate Director at Skidmore, Owings & Merrill LLP, where he has been working since 2005. Recent projects that he has been involved with include the new United States Courthouse in Los Angeles, 111 S. Main in Salt Lake City and several large scale mixed use high-rise buildings, like the CITIC development in Shenzen, China and the CTF Tianjin in Tianjin, China. Within SOM, Alessandro is also responsible for conducting research in the field of optimal structural topologies and development of innovative methodologies for structural analysis. Alessandro has co-authored several technical publications on a variety of structural engineering topics ranging from topology optimization to behavior of fiber composites and fiber reinforced concrete.

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Mark Sarkisian

Partner
Skidmore, Owings & Merrill LLP

Mark P. Sarkisian, PE, SE, LEED, BD+C, is the Partner of Seismic and Structural Engineering in the San Francisco office of Skidmore, Owings & Merrill LLP. His career has focused on developing innovative structural engineering solutions for over 100 major building projects—several among the world’s tallest—including the 421 meter-tall Jin Mao Tower in Shanghai, China; the 337 meter-tall Tianjin World Financial Center, Tianjin, China; the 412 meter-tall Al Hamra Fidrous Tower, Kuwait City, Kuwait; the US Embassy in Beijing, China; and the Cathedral of Christ the Light, Oakland, California. Mark holds nine U.S. Patents and five International Patents for high-performance seismic structural mechanisms designed to protect buildings in areas of high seismicity and for seismic and environmentally responsible structural systems. He has written and published a book titled “Designing Tall Buildings – Structure as Architecture,” and he teaches Integrated Studio Design courses focused on collaborative design opportunities that include students from the University of California, Berkeley, California College of the Arts, Stanford University, California Polytechnic State University, Northeastern University, North Carolina State University, and the Pratt Institute. He received his BS Degree in Civil Engineering from the University of Connecticut where he is a Fellow of the Academy of Distinguished Engineers, his MS Degree in Structural Engineering from Lehigh University, and an Honorary Doctorate Degree from Clarkson University.

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Neville Mathias

Associate Director
Skidmore, Owings & Merrill LLP

Neville Mathias, PE, SE, LEED AP, Associate Director and Senior Structural Engineer in the San Francisco office of Skidmore, Owings & Merrill LLP, has worked extensively on the structural design of major buildings across California and around the world. His projects include mixed-use, commercial, laboratory, medical, historic, transportation, residential/hotel, and educational facilities—many of them skyscrapers. He also specializes in the seismic design of non-prescriptive buildings using performance based, non-linear methodologies. Neville’s current work includes the 1310-foot-tall Al Hamra Firdous Tower in Kuwait and the 100-story Al Sharq Tower in Dubai. One of his projects, the St. Regis Museum Tower in San Francisco, was, until recently, the tallest reinforced concrete building in California. Neville has also been responsible for the design of several projects outside of California in areas of high seismic risk. These include the 75-story, steel plate shearwall Tianjin Global Financial Center Tower in Tianjin, China and Beijing Finance Street, a landmark eight-block complex comprised of 18 individual buildings in Beijing, China. He has a BS Degree in Civil Engineering from the University of Madras, and an MS Degree in Architecture and an MS Degree in Structural Engineering from the University of California, Berkeley.

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Samantha Walker

Senior Structural Engineering Professional
Skidmore, Owings & Merrill, LLP

Samantha Walker is a Senior Structural Engineering Professional at SOM. With a background in architecture, she promotes a collaborative, integrated approach to design. Samantha has worked on a wide range of local and international projects, from smaller residential to large-scale commercial and public buildings. She specializes in the design of high performance seismic protection systems, such as base isolation and dampers, and has designed structures in regions with high seismicity, including Haiti and California. She recently traveled to Mexico City with a team of colleagues in the aftermath of the September 19, 2017 earthquake to contribute to post-earthquake building reconnaissance efforts. Shortly afterwards, Samantha presented the team's findings at the EDIFICA 2017 Congress held at the Monterrey Institute of Technology and Higher Education. She holds professional engineering licenses in both Canada and the United States and a Master of Engineering degree from McGill University.

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Laelia Vaulot

Skidmore, Owings & Merrill, LLP

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