Evaluation of a substructured soft Real-time Hybrid Test for performing Seismic analysis of complex structural systems

D.P. McCrum, B.M. Broderick

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    The hybrid test method is a relatively recently developed dynamic testing technique that uses numerical modelling combined with simultaneous physical testing. The concept of substructuring allows the critical or highly nonlinear part of the structure that is difficult to numerically model with accuracy to be physically tested whilst the remainder of the structure, that has a more predictable response, is numerically modelled. In this paper, a substructured soft-real time hybrid test is evaluated as an accurate means of performing seismic tests of complex structures. The structure analysed is a three-storey, two-by-one bay concentrically braced frame (CBF) steel structure subjected to seismic excitation. A ground storey braced frame substructure whose response is critical to the overall response of the structure is tested, whilst the remainder of the structure is numerically modelled. OpenSees is used for numerical modelling and OpenFresco is used for the communication between the test equipment and numerical model. A novel approach using OpenFresco to define the complex numerical substructure of an X-braced frame within a hybrid test is also presented. The results of the hybrid tests are compared to purely numerical models using OpenSees and a simulated test using a combination of OpenSees and OpenFresco. The comparative results indicate that the test method provides an accurate and cost effective procedure for performing
    full scale seismic tests of complex structural systems.
    Original languageEnglish
    Pages (from-to)111-119
    Number of pages9
    JournalComputers and Structures
    Volume129
    Early online date26 Mar 2013
    DOIs
    Publication statusPublished - Dec 2013

    Keywords

    • Hybrid test method
    • Substructure modelling
    • Seismic testing
    • OpenFresco
    • OpenSees

    ASJC Scopus subject areas

    • Computer Science Applications
    • Civil and Structural Engineering
    • Mechanical Engineering
    • Modelling and Simulation
    • Materials Science(all)

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