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A 2D beam-column joint macro-element for the nonlinear analysis of RC frames
File | Description | Size | Format | |
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NodeWithHinges_Panto_et_al_accepted.pdf | Accepted version | 942.79 kB | Adobe PDF | View/Open |
Title: | A 2D beam-column joint macro-element for the nonlinear analysis of RC frames |
Authors: | Panto, B Caddemi, S Calio, I Spacone, E |
Item Type: | Journal Article |
Abstract: | Recent earthquakes have shown that the seismic behavior of noncode‐conforming reinforced concrete buildings are in several cases strongly affected by the nonlinear response and possible failure of the beam‐column joints. Beam‐column joint inelasticity is typically due to either shear cracking and failure of the central concrete panel or bond‐slip of the longitudinal steel bars. This paper proposes a new Joint with Hinges macro‐element capable of simulating the most important sources of nonlinearities in the joints. It consists of a quadrilateral central panel whose rigid edges are connected to the beams’ and columns’ end nodes through nonlinear finite‐length interfaces that represent the plastic hinge zones. The central panel deforms in shear only. The joint macro‐element accounts for the nonlinear shear response of the central panel, for the bond‐slip of the longitudinal rebars crossing the joint and for the nonlinear shear and flexural behavior of the plastic hinge zones of the beams and columns connected to the joint. The resulting model of the reinforced concrete frame is the assembly of nonlinear Joint with Hinges macro‐elements connected by elastic frame elements. The proposed formulation is applied in this paper to plane frames. Validation studies with results from available experimental tests on beam‐column joint subassemblages show the proposed model capability to predict the hysteretic responses and the failure mechanisms of connections with unreinforced joints and different beam reinforcement ratios. |
Issue Date: | Mar-2021 |
Date of Acceptance: | 3-Oct-2020 |
URI: | http://hdl.handle.net/10044/1/85226 |
DOI: | 10.1002/eqe.3375 |
ISSN: | 0098-8847 |
Publisher: | John Wiley and Sons |
Start Page: | 935 |
End Page: | 954 |
Journal / Book Title: | Earthquake Engineering and Structural Dynamics |
Volume: | 50 |
Issue: | 3 |
Copyright Statement: | © 2020 John Wiley & Sons Ltd. This is the accepted version of the following article: Pantò, B, Caddemi, S, Caliò, I, Spacone, E. A 2D beam‐column joint macro‐element for the nonlinear analysis of RC frames. Earthquake Engng Struct Dyn. 2020; 1– 20, which has been published in final form at https://doi.org/10.1002/eqe.3375 |
Keywords: | Science & Technology Technology Engineering, Civil Engineering, Geological Engineering beam‐ column joint bond‐ slip fiber section joint element macro‐ modeling reinforced‐ concrete frame seismic behavior REINFORCED-CONCRETE BUILDINGS INCORPORATING BOND-SLIP OF-PLANE BEHAVIOR SHEAR-STRENGTH SEISMIC ASSESSMENT MODEL DESIGN PERFORMANCE EARTHQUAKE DEFORMATION Science & Technology Technology Engineering, Civil Engineering, Geological Engineering beam‐ column joint bond‐ slip fiber section joint element macro‐ modeling reinforced‐ concrete frame seismic behavior REINFORCED-CONCRETE BUILDINGS INCORPORATING BOND-SLIP OF-PLANE BEHAVIOR SHEAR-STRENGTH SEISMIC ASSESSMENT MODEL DESIGN PERFORMANCE EARTHQUAKE DEFORMATION 0905 Civil Engineering Strategic, Defence & Security Studies |
Publication Status: | Published |
Online Publication Date: | 2020-11-04 |
Appears in Collections: | Civil and Environmental Engineering Faculty of Engineering |