IIIT Hyderabad Publications |
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QUANTIFICATION OF DAMAGE USING HINGE PATTERN IN RC MOMENT RESISTING FRAME BUILDINGSAuthors: Aniket Bhalkikar,Pradeep Kumar Ramancharla Conference: 17 th World Conference on Earthquake Engineering (WCEE 2020) Pages: 1-9 Location Japan Date: 2020-09-13 Report no: IIIT/TR/2020/83 AbstractDamage index models are used for quantification of damage in any numerical model of a building. While using any particular damage model there is high possibility that it might give similar result for two identical structures, each having different attributes. So, though currently available damage index models precisely quantify damage in the structure but fails to identify the reason or attributes/irregularities present in it. Therefore, for quantitative assessment, a unique aspect should be used which will depend on structural as well as architectural features. This paper presents new method for quantification of damage for reinforced concrete (RC) moment resisting framed (MRF) structures using the pattern of hinge formation in structure when it is subjected to a monotonic loading. A two-dimensional RC MRF structures with different building irregularities were modeled. As a primary step to estimate the damage from the pattern of hinge formation, it is necessary to understand and study the relation between damage and hinge pattern. For this purpose, energy-based damage index model is used. The relation between damage index and pattern of hinge formation is studied with the help of regression analysis. A multiple regression analysis is performed taking damage index as dependent variable and the number of hinges formed in each damage state as independent variables. The paper also discusses two different approaches for regression analysis determining the corresponding coefficients. The regression analysis resulted in an equation which can approximately quantify the damage in the structure using total number of hinges formed in each structural member. Full paper: pdf Centre for Earthquake Engineering |
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