PSI - Issue 44

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 44 (2023) 371–377

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. In this paper, a new graphical tool for supporting the design of B-CJs in RC frame structures is proposed. Diagrams (called nomograms) are presented, consisting in charts that lead to achieve the BCJ geometric dimensions and hoop amount so that the NTC18 B-CJ verifications are satisfied. The proposed nomograms can be used for all types of joints, and with any kind of geometry since they are dimensionless. Nomograms can simplify the RC building design since they offer an indication of the joint verification outcomes even from the early stages of the design process, i.e., at the moment in which the structure is conceived and built within a finite element model. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: RC beam-column joints; frame structure pre-dimensioning; beam-column joint verifications; nomograms. Abstract Beam-Column Joints (B-CJs) are crucial elements in Reinforced Concrete (RC) frame structures since their behaviour strongly affects the seismic performance of the structur s. Indeed, design hierarchy principles of these kind of structures are conceived to obtain t BCJs pres rvatio from pr mature failure, allowing the stru tural memb rs to d velop their f ll st ngth and ductili y and assuring a global dissipative structural behav our. As well known, B-CJs are the last link of the hiera chy chai and re esigned i the last step; if code joint verifications ar not satisfied, the B-CJ eeds to b re-designed, with possible consequences on the r - design of th structural memb s fr mi g into the joint and, often, on th archit ctural details. For the e reasons, an early knowl dge of the BCJs adequacy, since the early stages of the design process, can help engineers and archi ects to save time nd to ptimiz the architectural and structural d sign of buildings. In this paper, new graphical tool f r s pporting the design of B-CJs in RC frame structures is proposed. Diagrams (called nomograms) are presented, onsisting in charts that lead to achieve the BCJ geometric dimensions and h op amount so that the NTC18 B-CJ v rifications are sati fied. The p oposed nom grams can b used for all ypes of joints, and with any kind of geometry since they are dimensionless. Nomograms can simplify the RC buildi g design since they offer an indication of the joint verification out om s ev n from the arly stages of the de gn process, i.e., at the mome t i which the structure is c ceived and built wi hi a finite lem t model. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review u der re ponsibility of scientific committe of the XIX ANIDIS C nference, Seismic Engineering in Italy Keywords: RC beam-column joints; frame structure pre-di ensioning; beam-column joint verifications; nomograms. XIX ANIDIS Conference, Seismic Engineering in Italy Beam-column joint nomogram: A simple and fast-to-use tool to evaluate the joint integrity in RC structures Vanni Nicoletti a, *, Sandro Carbonari a , Fabrizio Gara a a Dept. of Construction, Civil Engineering and Architecture (DICEA), Università Politecnica delle Marche, 60131 Ancona, Italy. Abstract Beam-Column Joints (B-CJs) are crucial elements in Reinforced Concrete (RC) frame structures since their behaviour strongly affects the seismic performance of the structures. Indeed, design hierarchy principles of these kind of structures are conceived to obtain the BCJs preservation from premature failure, allowing the structural members to develop their full strength and ductility and assuring a global dissipative structural behaviour. As well known, B-CJs are the last link of the hierarchy chain and are designed in the last step; if code joint verifications are not satisfied, the B-CJ needs to be re-designed, with possible consequences on the re design of the structural members framing into the joint and, often, on the architectural details. For these reasons, an early knowledge of the BCJs adequacy, since the early stages of the design process, can help engineers and architects to save time and to optimize the architectural and structural design of buildings. XIX ANIDIS Conference, Seismic Engineering in Italy Beam-column joint nomogram: A simple and fast-to-use tool to evaluate the joint integrity in RC structures Vanni Nicoletti a, *, Sandro Carbonari a , Fabrizio Gara a a Dept. of Construction, Civil Engineering and Architecture (DICEA), Università Politecnica delle Marche, 60131 Ancona, Italy.

* Corresponding author. E-mail address: v.nicoletti@pm.univpm.it * Corresponding author. E-mail address: v.nicoletti@pm.univpm.it

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. 10.1016/j.prostr.2023.01.049