Sensitivity of the seismic response to the modelling variables defining constitutive models of reinforced concrete frames

Karaki, Ghada

Abstract

Probabilistic performance-based methods are well integrated into earthquake engineering applications. Therefore, the seismic response uncertainty and its sources must be adequately characterized for a more reliable seismic assessment. The paper examines the sensitivity of the RC frames response to the variables defining the constitutive models and their uncertainties. Floor displacements, floor accelerations, and section curvature were used in the sensitivity analysis, and the effect of the input variables defining the nonlinear material behaviour on seismic response was investigated. The approach’s algorithm was applied to a reinforced concrete moment-resisting frame. It was found that the variables defining the constitutive models; compressive strength of concrete, yield strength of steel, ratio of confined concrete strength to unconfined strength, variable that influences the shape of transition steel material curve, and modulus of elasticity of steel had a significant influence when considering inelastic behaviour. This pattern was more evident for the curvature.

• Presentation Conference Type: Conference Paper (Published)
• Conference Name: Eighth International Symposium on Life-cycle Civil Engineering (IALCCE 2023)
• Start Date: Jul 2, 2023
• End Date: Jul 6, 2023
• Acceptance Date: Apr 8, 2023
• Online Publication Date: Jun 28, 2023
• Publication Date: Jun 28, 2023
• Deposit Date: Sep 1, 2023
• Publicly Available Date: Sep 5, 2023
• Edition: 1st edition
• Book Title: Life-Cycle of Structures and Infrastructure Systems
• ISBN: 9781003323020
• DOI: https://doi.org/10.1201/9781003323020
• Public URL: https://uwe-repository.worktribe.com/output/11069808