Michele Barbato

University of California, Davis, Civil and Environmental Engineering, Faculty Member

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Dr. Michele Barbato's biographical webpage:https://faculty.engineering.ucdavis.edu/barbato/Dr. Michele Barbato's website:https://faculty.engineering.ucdavis.edu/barbato/ASCE 2009 Moisseiff Award recipient, for the paper “Nonlinear Seismic Response Analysis of Steel-Concrete Composite Frames”, Journal of Structural Engineering (ASCE), June 2008, as an “important contribution to the knowledge of the dynamic response of composite steel-concrete structures”. http://www.asce.org/pressroom/honors/winners/?w=moisseiff ========================================CURRENT RESEARCH GRANTS• Title: Development of finite elements for response and response sensitivity analysis of reinforced concrete structures retrofitted with externally-bonded fiber reinforced polymers PI: Barbato, M. Co-PI: None Source: Louisiana Board of Regents, RCS Program Duration: August 2010-July 2013Amount: $128,366 • Title: A probabilistic performance-based methodology for mitigation of wind-borne debris impact hazard and design of impact resistant building envelope components PI: Barbato, M.Co-PI: NoneSponsor: Louisiana Board of Regents, NSF EPSCoR, through LSU Graduate SchoolProgram: Economic Development Assistantships (EDAs) 2009-2010Grant Period: January 2010-December 2013Award Amount: $100,000• Title: A probabilistic performance-based approach for wind-borne debris hazard mitigationPI: Barbato, M.Co-PI: NoneSponsor: LSU College of Engineering, through Longwell’s Family FoundationProgram: Fund for Innovation in Engineering Research (FIER)Grant Period: March 2008-May 2010Award Amount: $20,000(http://www.eng.lsu.edu/news_events/viewnews.php?id=260)COMPLETED RESEARCH PROJECTS• Title: Probabilistic characterization of building envelope component resistance to wind-borne debris impact using experimental fragility curves PI: Barbato, M.Co-PI: NoneSponsor: LSU Council on Research Program: 2008-2009 Faculty Grant ProgramGrant Period: July 2008-December 2009Award Amount: $10,000(http://www.research.lsu.edu/frg_recipients08-09.pdf)• Title: Development of a novel record-and-site-based stochastic model for generation of synthetic ground motionsPI: Barbato, M.Co-PI: NoneSponsor: LSU Council on Research Program: 2008 Summer Stipend ProgramGrant Period: July 2008Award Amount: $5,000(http://www.research.lsu.edu/ssp2008.shtml)• Title: Probabilistic demand analysis of dynamically-excited uncertain structural systemsPI: Barbato, M.Co-PI: NoneSponsor: Louisiana Board of Regents, through NSF EPSCoRProgram: Pilot Funding for New Research (Pfund)Grant Period: April 2008-May 2009Award Amount: $10,000(http://www.laregents.org/www2/main/Pfund 2008 awards.pdf)• Title: Performance evaluation of buried pipe systemsPI: Barbato, M.Co-PI: NoneSponsor: Louisiana Department of Transportation and Development (LADOTD), through Louisiana Transportation Research Center (LTRC) Program: Technology TransferGrant Period: January 2008- December 2009Award Amount: $75,000(https://www.ltrc.lsu.edu/pdf/2008/capsule_086gt.pdf)
Supervisors: Joel P. Conte
Phone: 8583490054
Address: 3149 Ghausi Hall
University of California
One Shields Avenue
Davis, CA 95616

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Books by Michele Barbato

Computational Structural Dynamics and Earthquake Engineering: Vol.2

Earthquake engineering has a crucial need for efficient and accurate analytical tools to propagat... more Earthquake engineering has a crucial need for efficient and accurate analytical tools to propagate uncertainties from the seismic input and finite element (FE) model parameters to a probabilistic estimate of the seismic performance through advanced large-scale nonlinear simulations based on the same FE models as those used in deterministic analysis. Sensitivities of the FE response with respect to both model and loading parameters represent an essential ingredient in studying this complex propagation of uncertainties. This study presents recent developments in FE response sensitivity analysis based on the Direct Differentiation Method (DDM) for displacement-based, force-based, and three-field mixed finite elements. First-Order Second-Moment (FOSM) approximations of the first- and second-order statistics of the response of structural systems with random/uncertain parameters and subjected to deterministic quasi-static or dynamic loads are obtained using DDM-based FE response sensitivities and compared to Monte Carlo simulation results. First-Order Reliability Method (FORM) is applied to evaluate the prob-ability of a structural response quantity exceeding a specified threshold level in conjunction with the DDM-based FE response sensitivities in the search for the “design point(s)” (DPs). Both time-invariant and time-variant problems are considered. The geometry of limit-state surfaces near the DP(s) is explored in subspaces defined by planes of major principal curvatures. This geometry explains the lack of accuracy of FORM-based solutions in some cases and suggests the development of new improved solution strategies, e.g., the Design Point-Response Surface-Simulation (DP-RS-Sim) method. The examples presented in this study include both structural systems and soil-foundation-structure interaction systems and are based on two types of analysis which are used extensively in earthquake engineering, namely pushover analysis and time history analysis.

Papers by Michele Barbato

Probabilistic seismic demand model for pounding risk assessment

by Fabio Freddi and Michele Barbato

Earthquake Engineering & Structural Dynamics, 2016

Earthquake-induced pounding of adjacent structures can cause severe structural damage, and advanc... more Earthquake-induced pounding of adjacent structures can cause severe structural damage, and advanced probabilistic approaches are needed to obtain a reliable estimate of the risk of impact. This study aims to develop an efficient and accurate probabilistic seismic demand model (PSDM) for pounding risk assessment between adjacent buildings, which is suitable for use within modern performance-based engineering frameworks. In developing a PSDM, different choices can be made regarding the intensity measures (IMs) to be used, the record selection, the analysis technique applied for estimating the system response at increasing IM levels, and the model to be employed for describing the response statistics given the IM. In the present paper, some of these choices are analyzed and evaluated first by performing an extensive parametric study for the adjacent buildings modeled as linear single-degree-of-freedom systems, and successively by considering more complex nonlinear multi-degree-of-freedom building models. An efficient and accurate PSDM is defined using advanced intensity measures and a bilinear regression model for the response samples obtained by cloud analysis. The results of the study demonstrate that the proposed PSDM allows accurate estimates of the risk of pounding to be obtained while limiting the number of simulations required.

Michele Barbato

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