Hybrid analytical-experimental simulation in earthquake response assessment

A. S. Elnashai, O. Kwon, B. Gencturk, H. Mahmoud, B. Spencer, H. Elanwar, S. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Experimental testing and analytical simulations have provided great opportunities in assessing the safety of structures in seismic regions. Experimental testing is a function of the size and number of the specimens, which hinders its application in the case of large structural systems such as medium-to-long span bridges and multistory buildings. On the other hand, analytical simulation is powerful but its inelastic response models are far from being accurate especially near structural collapse. Hybrid simulation for earthquake response assessment has been under development for over a decade, in response to the shortcomings of both testing and analysis. Experience and infrastructure now exist to design complex integrated experimental-analytical assessment environments for very large structures and their foundations by distributing the physical tests over any number of laboratories regardless of their geographical location, and to distribute the analysis over any number of computer programs, while maintaining all aspects of interaction between the components. This paper traces the recent history of hybrid simulation with specific reference to developments at the MUST-SIM Facility of the University of Illinois at Urbana-Champaign, USA. The concept is explained, and the integration software (termed UI-SIMCOR) is described. Several example applications are described. Amodel updating approach, which learns from the tested components to improve the analytical models during the test is explained. It is demonstrated that hybrid simulation is the most versatile and realistic platform for the assessment of structures and their foundations under earthquake loading up to structural collapse.

Original languageEnglish (US)
Title of host publicationInsights and Innovations in Structural Engineering, Mechanics and Computation - Proceedings of the 6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016
EditorsAlphose Zingoni
PublisherCRC Press/Balkema
Pages16-22
Number of pages7
ISBN (Print)9781138029279
StatePublished - Jan 1 2016
Event6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016 - Cape Town, South Africa
Duration: Sep 5 2016Sep 7 2016

Publication series

NameInsights and Innovations in Structural Engineering, Mechanics and Computation - Proceedings of the 6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016

Other

Other6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016
CountrySouth Africa
CityCape Town
Period9/5/169/7/16

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ASJC Scopus subject areas

  • Mechanical Engineering
  • Civil and Structural Engineering

Cite this

Elnashai, A. S., Kwon, O., Gencturk, B., Mahmoud, H., Spencer, B., Elanwar, H., & Kim, S. (2016). Hybrid analytical-experimental simulation in earthquake response assessment. In A. Zingoni (Ed.), Insights and Innovations in Structural Engineering, Mechanics and Computation - Proceedings of the 6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016 (pp. 16-22). (Insights and Innovations in Structural Engineering, Mechanics and Computation - Proceedings of the 6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016). CRC Press/Balkema.