PSI - Issue 44

Eleonora Bruschi et al. / Procedia Structural Integrity 44 (2023) 1443–1450 Eleonora Bruschi et al./ Structural Integrity Procedia 00 (2022) 000 – 000

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than that of the SHD-DBS;

(v) the LED-DBS is more effective than the SHD-DBS in reducing the total base shear force when the seismic rehabilitation is designed for maintaining the frame behavior in the elastic range, resulting in about 30% decrease of the damper reaction force. In contrast, the decrease is on the order of 20% when the retrofit is designed for dissipative frame behavior, because of the contribution to the total damping provided by the inelastic deformation of the main frame which adds up to the contribution of the damped brace system. References Akcelyan, S., Lignos, D.G., Hikino, T., Nakashima, M., 2016. Evaluation of simplified and state-of-the-art analysis procedures for steel frame buildings equipped with supplemental damping devices based on E-Defense full-scale shake table tests. Journal of Structural Engineering 142(6); DOI: 10.1061/(ASCE)ST.1943-541X.0001474. Bruschi E. Seismic Retrofit of RC Framed Buildings with Supplementary Energy Dissipation: Modelling and Application of a Novel Lead Damper. PhD Thesis, Politecnico di Milano, Milan, Italy, 2021. Bruschi, E., Quaglini, V., Calvi, P.M., 2021a. A simplified design procedure for seismic upgrade of frame structures equipped with hysteretic dampers. Engineering Structures 251: 113504; DOI: 10.1016/j.engstruct.2021.113504. Bruschi, E., Calvi, P.M., Quaglini, V., 2021b. Concentrated plasticity modelling of RC frames in time-history analyses. Engineering Structures 243, 112716; DOI: 10.1016/j.engstruct.2021.112716. Bruschi, E., Quaglini, V., Calvi, P.M., 2021c. Numerical assessment of concentrated plasticity models of ductile RC frames in non-linear dynamic analyses. FIB Italy YMG Symposium 2021 – Symposium on Concrete and Concrete Structures “The future of concrete structures: towards resilience and technological innovation”, Rome, Italy . Bruschi, E., Quaglini, V., Calvi, P.M., 2022. A simplified design procedure to improve the seismic performance of RC framed buildings with hysteretic damped braces. New Metropolitan Perspectives 2022 - 5th International Symposium “Post COVID Dynamics: Green and Digital Transition, between Metropolitan and Return to Villages’ Perspectives”, Reggio Calabria, Italy, May 25 -27, 2022. CEN (European Committee for Standardization). European Committee for Standardization (2009). EN 15129. Anti-seismic devices. Brussels. CEN (European Committee for Standardization). Design of structures for earthquake resistance - Part 3: Assessment and retrofitting of buildings. EN 1998 – 3 Eurocode 8; 2005. CRESME Ricerche, 2021. Incentivi e riduzione del rischio sismico in Italia. Ingegneria Sismica Italiana, in Italian. CSLLPP (Consiglio Superiore dei Lavori Pubblici). D.M. 17 gennaio 2018 in materia di “norme tecniche per le costruzioni”. Gazzetta ufficiale n.42 del 20 febbraio 2018, Supplemento ordinario n.8, Ministero delle Infrastrutture e dei trasporti, Roma; 2018, in Italian. Di Cesare, A., Ponzo, F.C., 2017. Seismic retrofit of reinforced concrete frame buildings with hysteretic bracing systems: design procedure and behaviour factor. Hindawi, Shock and Vibration, Article ID 2639361; DOI: 10.1155/2017/2639361. Gandelli, E., Taras, A., Disti, J., Quaglini, V., 2019. Seismic retrofit of hospitals by means of hysteretic braces: influence on acceleration-sensitive non-structural components. Frontiers in Built Environment 5(100); DOI:10.3389/fbuil.2019.00100. McKenna, F., Fenves, G.I., Scott, M.H., 2000. Open System for Earthquake Engineering Simulation, PEER Report, Berkeley, CA. Nuzzo, I., Losanno, D., Caterino, N., 2019. Seismic design and retrofit of frames structures with hysteretic dampers: a simplified displacement based procedure. Bulletin of Earthquake Engineering 17, 2787-2819; DOI: 10.1007/s10518-019-00558-8. OpenSeesWiki online manual. Available online at: https://opensees.berkeley.edu/wiki/index.php/Main_Page [last access: April 2021]. Quaglini, V., Pettorruso, C., Bruschi, E., 2021a. Experimental and numerical assessment of prestressed lead extrusion dampers. International Journal of Earthquake Engineering, Anno XXXVIII – Num.2, 46-69. Quaglini, V., Bruschi, E., Pettorruso, C., 2021b Dimensionamento di dispositivi per la riabilitazione sismica di strutture intelaiate. Structural 237, paper 25, ISSN 2282-3794; DOI: 10.12917/STRU237.25. Quaglini, V., Bruschi, E., 2022. Controllo passivo mediante controventi dissipativi. Principi generali, requisiti normativi ed evoluzione dei principali dispositivi a comportamento dipendente dallo spostamento, Structural 240 – marzo/aprile 2022 – paper 09 – ISSN 2282-3794; DOI: 10.12917/STRU240.09. Quaglini, V., Pettorruso, C., Bruschi, E., 2022. Design and Experimental Assessment of a Prestressed Lead Damper with Straight Shaft for Seismic Protection of Structures. Geosciences 12(5): 182; DOI: 10.3390/geosciences12050182. Scott, M.H., Fenves, G.L., 2006. Plastic hinge integration methods for force-based beam-column elements. Journal of Structural Engineering 132(2), 244-252; DOI: 10.1061/(ASCE)0733-9445(2006)132:2(244). SIMQKE (SIMulation of earthQuaKE ground motions). Available online at: https://gelfi.unibs.it/software/simqke/simqke_gr.htm (last accessed: July 2021).