This research introduces an efficient methodology for reliability-based desig and seismic risk assessment of structural systems, such as buildings equipped with linear and nonlinear viscous damping devices while accounting for the uncertainties affecting both seismic input and model parameters. Moreover, different computational methodologies for reliability-based seismic pounding mitigation are developed.

Related Publications

• Ghazizadeh S and Barbato M (2010). “An improved approximate solution of the first-passage problem for simple oscillator subjected to white noise excitation.” Proceedings (full paper participating to the student paper competition in Probabilistic Methods), 2010 Engineering Mechanics Institute Conference (EMI 2010), August 8-11, 2010, Los Angeles, CA (USA).
• Tubaldi E and Barbato M (2011). “Reliability-based assessment of seismic pounding risk between adjacent buildings.” Proceedings (full paper), 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2011), May 25-28, 2011, Corfu (Greece). (Link)
• Tubaldi E and Barbato M (2011). “Evaluation of seismic pounding risk between adjacent buildings exhibiting linear behavior.” Proceedings (full paper), XIV ANIDIS Congress 2011, September 18-22, 2011, Bari (Italy).
• Ghazizadeh S (2011). “A study on the first-passage reliability problem and its application in earthquake engineering.” MSc Thesis, Louisiana State University, December 2011. (Link)
• Tubaldi E, Barbato M and Dall’Asta A (2012). “Reliability-based assessment of structures with added linear viscous dampers.” Proceedings (full paper). Stochastic Mechanics 2012 (SM12), June 7–10, 2012, Ustica (Italy). Published in Meccanica Dei Materiali e delle Strutture, 3(1):33-40. ISSN: 2035-679X.
• Barbato M and Tubaldi E (2012). “A reliability-based approach for seismic pounding risk assessment.” Proceedings (abstract), 2012 Joint Conference of the Engineering Mechanics Institute and 11th ASCE Joint Specialty Conference on Probabilistic Mechanics and Structural Reliability (EMI/PMC 2012), June 17-20, 2012, University of Notre Dame, South Bend, IN (USA).
• Tubaldi E, Barbato M and Ghazizadeh S (2012). “A probabilistic performance-based risk assessment approach for seismic pounding with efficient application to linear systems.” Structural Safety, 36–37:14–22. (Link)
• Ghazizadeh S, Barbato M and Tubaldi E (2012). “New analytical solution of the first-passage reliability problem for linear oscillators.” Journal of Engineering Mechanics (ASCE), 138(6):695-706. (Link)
• Barbato M and Tubaldi E (2013). “Risk-based design of the separation distance between adjacent buildings.” Proceedings (abstract), 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2013), June 12-14, 2013, Kos Island (Greece).
• Tubaldi E, Barbato M and Dall’Asta A (2013). “Optimal risk-based design of linear dampers for seismic retrofit of buildings.” Proceedings (abstract), 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2013), June 12-14, 2013, Kos Island (Greece).
• Tubaldi E, Freddi F and Barbato M (2013). “Probabilistic seismic demand and fragility assessment for evaluating the separation distance between adjacent buildings.” Proceedings (full paper), 11th International Conference on Structural Safety and Reliability (ICOSSAR 2013), June16-20, 2013, Columbia University New York, NY (USA). (Link)
• Petrini F, Palmeri A and Barbato M (2013). “Performance-based wind design of tall buildings equipped with viscoelastic dampers.” Proceedings (full paper), 11th International Conference on Structural Safety and Reliability (ICOSSAR 2013), June 16-20, 2013, Columbia University New York, NY (USA).
• Barbato M and Tubaldi E (2013). “A probabilistic performance-based approach for mitigating the seismic pounding risk between adjacent buildings.” Earthquake Engineering and Structural Dynamics, 42(8):1203-1219. (Link)
• Tubaldi E and Barbato M (2013). “Stochastic analysis of the risk of seismic pounding between adjacent buildings.” Chapter 18 in “Computational Methods in Stochastic Dynamics: Vol.2.” M. Papadrakakis, G. Stefanou, V. Papadopoulos Editors, Springer, ISBN: 978-94-007-5134-7. (Link)
• Tubaldi E, Barbato M and Dall’Asta A (2014). “Performance-based seismic risk assessment for buildings equipped with linear and nonlinear viscous dampers.” Engineering Structures, 78:90–99. (Link)
• Tubaldi E, Barbato M and Dall’Asta A (2014). “Stochastic seismic response analysis of adjacent buildings coupled by nonlinear viscous dampers.” Proceedings (full paper), 9th International Conference on Structural Dynamics (EURODYN 2014), 30 June 30 – 2 July 2014, Porto (Portugal). (Link)
• Tubaldi E, Barbato M and Dall’Asta A (2016). “A semi-analytical methodology for the reliability-based design of linear dampers used for seismic hazard mitigation of buildings.” Proceedings (abstract), 2016 Joint Engineering Mechanics Institute and probabilistic Mechanics Conference (EMI2016/PMC2016), May 22-25, 2016, Vanderbilt University, Nashville, TN (USA).
• Tubaldi E, Freddi F and Barbato M (2016). “Probabilistic seismic demand model for pounding risk assessment.” Earthquake Engineering and Structural Dynamics, 45:1743–1758. (Link)
• Tubaldi E, Freddi F and Barbato M (2017). “Development of a probabilistic seismic demand model for pounding risk assessment of buildings.” Proceedings (full paper), 16th World Conference on Earthquake Engineering (16WCEE), January 8-14, 2017, Santiago (Chile).
• Tubaldi E, Barbato M and Dall’Asta A (2016). “Efficient approach for the reliability-based design of linear damping devices for seismic protection of buildings.” ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, 2(2), June 2016. (Link)

 

Funded Projects Supporting this Research

• A probabilistic Performance-Based Approach for Wind-Borne Debris Hazard Mitigation

PI: Barbato, M.

Co-PI: None

Sponsor: LSU College of Engineering, through Longwell’s Family Foundation

Program: Fund for Innovation in Engineering Research (FIER)

Period: March 2008 - May 2010

• A probabilistic performance-based approach for building separation distance decision to mitigate seismic pounding risk

PI: Barbato, M.

Co-PI: None

Sponsor: LSU Council on Research

Program: 2009-2010 Faculty Research Grant Program

Period: August 2010 - July 2011

• 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

Sponsor: Louisiana Board of Regents

Program: RCS Program

Period: August 2010 - July 2013

• A novel performance-based methodology for mitigation of seismic pounding risk

PI: Barbato, M.

Co-PI: None

Sponsor: Louisiana Board of Regents, through NSF EPSCoR

Program: Pilot Funding for New Research (Pfund) 2010 Program

Period: March 2011 - February 2012

• Advanced semi-analytical techniques for accurate and efficient estimate of first-passage failure probabilities

PI: Barbato, M.

Co-PI: None

Sponsor: Louisiana Board of Regents, through NSF EPSCoR

Program: Pilot Funding for New Research (Pfund) 2012 Program

Period: January 2013 - December 2013

• Use of stabilized phosphogypsum as a construction material for artificial reefs

PI: Barbato, M. (35%), Gutierrez-Wing, M.T. (35%),

Co-PI: Rusch, K.A., Seals, R. (10%), Jung, J. (20%)

Sponsor: Louisiana Department of Wildlife and Fisheries

Program: NA

Period: September 2013 - August 2016