Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Seismic Performance Assessment of RC Moment Frames Considering Stiffness Modification in Nonlinear Concentrated Plasticity Formulation for Modeling Damping

Version 1 : Received: 25 June 2021 / Approved: 9 July 2021 / Online: 9 July 2021 (16:18:12 CEST)

How to cite: Mohammadgholibeyki, N. Seismic Performance Assessment of RC Moment Frames Considering Stiffness Modification in Nonlinear Concentrated Plasticity Formulation for Modeling Damping . Preprints 2021, 2021070233 (doi: 10.20944/preprints202107.0233.v1). Mohammadgholibeyki, N. Seismic Performance Assessment of RC Moment Frames Considering Stiffness Modification in Nonlinear Concentrated Plasticity Formulation for Modeling Damping . Preprints 2021, 2021070233 (doi: 10.20944/preprints202107.0233.v1).

Abstract

In order to alleviate the problems regarding conventional damping modeling techniques in nonlinear structural simulations, using concentrated plasticity formulation including rotational end springs with no damping plus middle elastic parts with modified assigned damping has recently been proposed. However, a proper selection for springs’ stiffness is a source of contention. In this paper, the effect of choosing different ratios for springs’ rotational stiffness to the elastic part of the elements on the seismic performance of RC moment frames was investigated. Incremental Dynamic Analysis (IDA) was performed and the derived responses were used for seismic performance assessment methodology. The results demonstrate that using flexible springs may lead to a greatly conservative estimation of collapse capacity, annual losses, and repair costs compared to a rigid one. Due to lack of experimental data, it is not possible to certainly assert the most appropriate ratio. However, such variation in the seismic performance of a building model with different stiffness modification necessitates more investigation on this modeling strategy.

Subject Areas

Concentrated plasticity; damping; rotational stiffness; seismic performance; collapse capacity; loss estimation

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.