engleski

Validation of a simplified micromodel for analysis of infilled RC frames exposed to cyclic lateral loads

RC frame structure infilled with masonry wall ("framed-masonry") exposed to lateral loads act as a composite structure. Numerical simulation of framed-masonry is difficult and generally unreliable due to many difficulties and uncertainties in its modelling. In this paper we reviewed the usability of advanced non- linear FEM computer program to predict accurately the behaviour of framed-masonry elements when exposed to cyclic lateral loading. Numerical results are validated against the test results of framed-masonry specimens, with and without openings. Initial simplified micro models were calibrated by adjustment of the input parameters, within the physically justifiable borders, in order to have the best correlation between the experimental and numerical results. It has been shown that the use of simplified micro models for the investigation of composite masonry- infilled RC frames required in-depth knowledge and engineering judgement in order to be used with confidence. Modelling problems were identified and explained in detail and lend an insight to practicing engineers on how to deal with them.

Infilled frame ; framed masonry ; simplified micromodel ; calibration ; validation

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