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Influence of Sequence of Plastic Hinge Formation in RC Frames by Nonlinear Static Analysis

Ravikumara H S, K S Babu Narayan

Abstract


Push over analysis is popularized in recent days as a tool to evaluate the performance of structures underground motions. The three concepts of push over analysis, such as capacity, demand and performance are symbolized by capacity curve and target displacement similar to the maximum displacement expected to be experienced by the structure during a considered earthquake. The evaluation look attentively at the factors such as global heap, interstorey heap, inelastic element deformations, deformation between elements etc. The first and most important step of this procedure, modeling of the structure demands the determination of the nonlinear properties of each component that are quantified by strength and deformation capacities. Notwithstanding the development made in the static inelastic push over analysis, the results obtained from analytical methods are failing to match the actual displacement characteristics of the structure. A thorough investigation needs to be carried out to address this issue which may be the cause of order of sequence of hinges formation. An attempt has been made in this paper to investigate the sequence of hinge formation by analyzing an RC frame by using a software package SAP 2000.

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References


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DOI: https://doi.org/10.37628/.v1i2.400

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