Performance Evaluation of a Non-Ductile Reinforced Concrete Moment Frame Building




Suwal, Anil

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The main goal of this dissertation is to evaluate modeling parameters and acceptance criteria used to assess the performance and collapse potential of non-ductile reinforced concrete buildings during strong earthquakes. Modeling parameters and acceptance criteria currently adopted in the ASCE-41 standard were calibrated based on different sets of criteria for different types of reinforced concrete frame elements, and the implications of the disparity in calibration criteria on the outcome of system performance evaluations is not well understood. In this study, modeling parameters and acceptance criteria were evaluated on the basis of the calculated performance of an existing reinforced concrete frame building that was instrumented during several strong earthquakes. Computer models of the building were created using the OpenSees finite element program and calibrated using the strong motion records from the 1994 Northridge earthquake measured at the building site. Finite element models of the building structure were developed using modeling parameters in the ASCE 41-13 and ASCE 41-17 standards. After calibration, the building models were subjected to incremental dynamic analyses using the near-fault and far-fault earthquake record sets provided in FEMA P695, scaled to the MCE level earthquake at the building site, according to the procedure in FEMA P695. Incremental dynamic analyses were performed for models created with the provisions in the ASCE 41-13 and 41-17 standards. Results from the analyses were used to calculate fragility relationships describing the probability of exceeding modeling parameters, acceptance criteria, and various performance levels, as a function of the intensity of the ground motion. Incremental dynamic analyses were also performed for a set of strong motion records of past earthquakes measured at the building site, and performance levels for each record according to ASCE 41 acceptance criteria were compared with damage reports available in the technical literature.


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earthquake, finite element method, nonlinear analysis



Civil and Environmental Engineering