NONLINEAR ANALYSIS OF REINFORCED CONCRETE FRAMES

[Veggeta]

NONLINEAR ANALYSIS OF REINFORCED CONCRETE FRAMES

This study endeavors to develop improved analytical methods for predicting the
nonlinear static and dynamic response of multistory reinforced concrete frames. This report is
limited to the study of the static response.
A new approach in describing the nonlinear hysteretic behavior of reinforced concrete
frame elements is proposed. This approach consists of isolating the basic mechanisms
controlling the hysteretic behavior of girders and columns into individual subelements which
are connected in series to form the girder or column superelement. Two particular subelement
models are developed in this study: one describes the inelastic behavior along the girder
accounting for the gradual spread of inelastic deformations at the girder ends, while the other
models the fixed-end rotations that arise at the beam-column interface due to bond
deterioration and slippage of reinforcing bars in the beam-column joint region. The properties
of these elements can be derived from basic principles or refined finite element models.

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[kowheng]

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