Accelerated Bridge Construction in High Seismic Zones ... · PDF fileProceedings of the 11th...
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Proceedings of the 11 th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016 -1- Accelerated Bridge Construction in High Seismic Zones- Pocket Connections for Conventional and Novel Materials M. Saiid SAIIDI Professor and Director, Center for Advanced Technology in Bridges and Infrastructure (CATBI), University of Nevada, Reno (UNR), SEM, MS 258, No.1664, N. Virginia Street, Reno, NV 89557, U.S.A. E-mail: [email protected] ABSTRACT Motivated by the need to serve the travelling public more effectively, bridge construction in the US is adopting a new paradigm: accelerated bridge construction (ABC). Prefabricated bridge components often cast simultaneously in fabrication yard while the bridge site work has begun allows for expedited assembly of different components onsite and quick project delivery. Road closures are minimized and construction hazard is reduced due to shorter construction time. Side benefits of ABC are many and include better quality control because of plant casting, versatility in methods to connect the components, and opportunity to embrace novel materials. Connections of prefabricated components are particularly critical in moderate and high seismic zones and under other extreme events such as blast and hurricanes because these connections must maintain the integrity of the bridge while allowing for large deformations. Research in the past decade has led to development of a variety of earthquake-resistant connections for use in ABC. The focus has been primarily on conventional reinforced concrete elements. However, the opportunity to integrate advanced materials in ABC has also motivated a limited number of studies on connections for prefabricated components with novel materials. Studies have typically included experimental cyclic and shake table testing as well as analytical modeling. Many studies on ABC connections for conventional and novel materials have been in progress at CATBI at UNR under the direction of the author. The presentation will provide an overview of these studies and the lessons learned for implementation in the field.
Transcript of Accelerated Bridge Construction in High Seismic Zones ... · PDF fileProceedings of the 11th...
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Accelerated Bridge Construction in High Seismic Zones- Pocket Connections for Conventional and Novel Materials
M. Saiid SAIIDI
Professor and Director, Center for Advanced Technology in Bridges and Infrastructure
(CATBI), University of Nevada, Reno (UNR), SEM, MS 258, No.1664, N. Virginia Street, Reno, NV 89557, U.S.A.
E-mail: [email protected]
ABSTRACT Motivated by the need to serve the travelling public more effectively, bridge
construction in the US is adopting a new paradigm: accelerated bridge construction (ABC). Prefabricated bridge components often cast simultaneously in fabrication yard while the bridge site work has begun allows for expedited assembly of different components onsite and quick project delivery. Road closures are minimized and construction hazard is reduced due to shorter construction time. Side benefits of ABC are many and include better quality control because of plant casting, versatility in methods to connect the components, and opportunity to embrace novel materials.
Connections of prefabricated components are particularly critical in moderate and high seismic zones and under other extreme events such as blast and hurricanes because these connections must maintain the integrity of the bridge while allowing for large deformations. Research in the past decade has led to development of a variety of earthquake-resistant connections for use in ABC. The focus has been primarily on conventional reinforced concrete elements. However, the opportunity to integrate advanced materials in ABC has also motivated a limited number of studies on connections for prefabricated components with novel materials. Studies have typically included experimental cyclic and shake table testing as well as analytical modeling.
Many studies on ABC connections for conventional and novel materials have been in progress at CATBI at UNR under the direction of the author. The presentation will provide an overview of these studies and the lessons learned for implementation in the field.
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
Mehdi Saiid SAIIDI, Ph.D. Professor and Director, Center for Advanced Technology in Bridges and Infrastructure (CATBI), University of Nevada, Reno (UNR) Mailing Address: SEM, MS 258, No.1664, N.
Virginia Street, Reno, NV 89557, U.S.A. Phone: +1-775-784-4831 Fax: +1-775-784-1390 E-mail: [email protected] RESEARCH AND ACADEMIC INTERESTS Earthquake Engineering of Bridges and Buildings
Experimental Studies of Bridges and Components Analysis and Design of Reinforced Concrete Structures Novel Materials in Earthquake-Resistant Structures Earthquake-Resistant Connections for Accelerated Bridge Construction
EDUCATION M.S. in Civil Engineering (Five-year program), Tehran University, 1973.
M.S. in Civil Engineering (Structures), University of Illinois, Urbana-Champaign, 1977. Ph.D. in Civil Engineering (Structures), University of Illinois, Urbana-Champaign, 1979.
CURRENT POSITION Professor, Civil Engineering Department, University of Nevada, Reno, 1988.07~Present.
Senior Principal, Infrastructure Innovation, 2007.08~Present.
WORK EXPERIENCES AND ACHIEVEMENTS Director, Office of Undergraduate Research, University of Nevada, Reno, 2003.08~2009.07.
Chairman, Civil Engineering Department, University of Nevada, Reno, Nevada, 1986.07~1994.06.
Associate Professor, Civil Engineering Department, University of Nevada, Reno, Nevada, 1983.07~1988.06.
Assistant Professor, Civil Engineering Department, University of Nevada, Reno, Nevada, 1979.08~1983.06.
HONORS AND AWARDS Distinguished Leadership Award for Outstanding Contributions to Civil Engineering, 2nd
Edition. UNR-Foundation Professorship Award, 1997. UNR Outstanding Researcher of the Year Award, 2000. Distinguished Civil and Environmental Engineering Alumni Award, University of Illinois at
Urbana-Champaign, 2003. Regents Researcher Award, University and Community College System of Nevada, 2003. Lemelson Award for Innovative Research, College of Engineering, University of Nevada,
Reno, 2004. Advisor of the Year Award, Associated Students at the University of Nevada, Reno, 2004. Distinguished Alumni Award, College of Engineering, Tehran University, 2004. College of Engineering Excellence in Research Award, University of Nevada, Reno, May
2014. Established Innovator Award, Office of Vice President for Research and Innovation,
University of Nevada, Reno, May 2016.
Proceedings of the 11th US-Taiwan Bridge Engineering Workshop Taipei, Taiwan, October 20~21, 2016
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PROFESSIONAL ASSOCIATIONS Fellow, ASCE; Fellow, ACI.
Member ACI Committees 318-D, 341, and 352. Member, ACI, ASCE, EERI, Phi Kappa Phi, NEES Consortium, CUREE. Registered Professional Engineer in the State of Nevada and California. Reviewer of the National Science Foundation Research Proposals. Reviewer of ASCE, ACI, EERI, PCI, Journal of Engineering Structures, Journal of
Structural Engineering and Mechanics, Earthquake Engineering and Structural Dynamics, and TRB Manuscripts Member of Review Panels for NCHRP and NSF Proposals.
SELECTED PUBLICATIONS Tazarv, M. and Saiidi, M. (2016), “Seismic Design of Bridge Columns Incorporating
Mechanical Bar Splices in Plastic Hinge Regions,” Journal of Engineering Structures, Vol. 124, pp. 507-520.
Varela, S. and Saiidi, M. (2016), “A Bridge Column with Superelastic NiTi SMA and Replaceable Rubber Hinge for Earthquake Damage Mitigation,” Journal of Smart Materials and Structures.
Mehrsoroush, A. and Saiidi, M. (2016), “Cyclic Response of Precast Bridge Piers with Novel Column Base Pipe Pins and Pocket Connections,” Journal of Bridge Engineering, ASCE, Vol. 21, No. 4.
Yang, Y., Sneed, L., Saiidi, M., Belarbi, A., and Ehsani, M. (2015), “Emergency Repair of an RC Bridge Columns with Fractured Bars Using Externally Bonded Prefabricated Thin CFRP Laminates and CFRP Strips,” Journal of Composite Structures, Vol. 133, pp. 727-738.
Saiidi, M., Tazarv, M., Nakashoji, B., Varela, S., and Kavianipour, F. (2015), “Resilient and Sustainable Bridges of the Future,” International Journal of Bridge Engineering, Vol. 3, No. 2, pp. 37-48.
Tazarv, M. and Saiidi, M. (2015), “Low-Damage Precast Columns for Accelerated Bridge Construction in High Seismic Zones,” Journal of Bridge Engineering, ASCE.
Haber, Z., Saiidi, M., and Sanders, D. (2015), “Behavior and Modeling of Mechanical Reinforcing Bar Splices,” ACI Structural Journal, American Concrete Institute, Vol. 112, No. 2, pp. 179-188.
Varela, S. and Saiidi, M. (2014), “Dynamic Performance of Innovative Bridge Columns with Superelastic CuAlMn Shape Memory Alloy and ECC,” International Journal of Bridge Engineering, Vol. 2, No. 3, pp. 29-58.
Tazarv, M. and Saiidi, M. (2014), “Reinforcing NiTi Superelastic SMA for Concrete Structures,” Journal of Structural Engineering, ASCE Vol. 106, No. 10.
Haber, Z., Saiidi, M., and Sanders, D. (2014), “Seismic Performance of Precast Columns with Mechanically Spliced Column-Footing Connections,” ACI Structural Journal, American Concrete Institute, Vol. 111, No. 3, pp. 639-650.
Motaref, S., Saiidi, M., and Sanders, D. (2014), “Shake Table Studies of Energy Dissipating Segmental Bridge Columns,” Journal of Bridge Engineering, ASCE, Vol. 19, No. 2, pp. 186-199.
Cruz, C. and Saiidi, M. (2013), “Performance of Advanced Materials during Shake Table Tests of a 4-Span Bridge Model,” Journal of Structural Engineering, ASCE, Vol. 139, No. 1, pp. 144-154.
