The regulations regarding structural and seismic safety have undergone significant evolution since the 1970s, with the introduction of probabilistic analysis of structural safety and seismic standards for constructions in seismic zones with laws no. 1086 of November 5, 1971, and no. 64 of February 2, 1974. Initially, these regulations focused on reinforced concrete, neglecting masonry constructions, which only received specific regulations with the Ministerial Decree of November 20, 1987. Considering that about 60% of the Italian building stock consists of buildings with load-bearing masonry structures, the need for targeted interventions to ensure both the structural stability and energy efficiency of existing buildings becomes evident. The case study will address a historical building dating back to the 1400s, located in the district. Therefore, the project must comply with specific regulations for buildings in historic centers. To understand the building under study, a survey of the current state will be conducted, primarily based on a visual and historical investigation of the construction techniques used in the 1400s and before the 1800s. Diagnostics will be carried out through visual inspections and geometric surveys, supplemented by a historical analysis of the construction techniques used during the building's construction period. This analysis will provide a comprehensive overview of the current state of the structure and identify the most appropriate intervention methodologies. The project interventions will include the consolidation of the masonry with low-impact techniques and the complete replacement of the floors with new structures compliant with NTC2018. The project will be comprehensive, including structural works for the building's recovery, structural improvement interventions, and restoration of functionalities, as well as architectural works aimed at ensuring living comfort and preventing material degradation. The structural design will follow the guidelines of NTC2018 and use updated calculation methods to determine the actions and resistances of the new structural elements. The project will combine modern techniques and scientific research with a deep respect for the historical heritage, ensuring the preservation of the architectural and historical features of the building, while simultaneously improving its safety and functional efficiency.
La normativa riguardante la sicurezza strutturale e sismica ha subito un'evoluzione significativa a partire dagli anni '70, con l'introduzione dell'analisi probabilistica della sicurezza strutturale e delle norme sismiche per le costruzioni in zona sismica con le leggi n.1086 del 5 novembre 1971 e n.64 del 2 febbraio 1974. Queste normative inizialmente si concentravano sul calcestruzzo armato, dimenticando le costruzioni in muratura che solo con il Decreto Ministeriale del 20 novembre 1987 hanno ricevuto una normativa specifica. Considerando che circa il 60% del patrimonio edilizio italiano è costituito da edifici con struttura portante in muratura, risulta evidente la necessità di interventi mirati per garantire sia la stabilità strutturale che l'efficienza energetica degli edifici esistenti. Il caso studio tratterà un edificio storico risalente al 1400, situato in contrada. Il progetto deve, perciò, rispondere alle norme specifiche per edifici in centro storico. Al fine di conoscere l’edificio oggetto di studio si effettuerà un rilievo dello stato di fatto basato principalmente su un'indagine visiva e storica delle tecniche costruttive utilizzate nel 1400 e prima del 1800. La diagnostica verrà effettuata attraverso indagini visive e rilievi geometrici, integrati da un'analisi storica delle tecniche costruttive utilizzate nel periodo di costruzione dell’edificio. Questa analisi permetterà di delineare un quadro complessivo dello stato attuale della struttura e di individuare le metodologie di intervento più appropriate. Gli interventi di progetto includeranno il consolidamento delle murature con tecniche a basso impatto e la sostituzione completa dei solai con nuove strutture conformi alle NTC2018. Il progetto risulterà organico e includerà opere strutturali per il recupero dell'edificio, interventi di miglioramento strutturale e ripristino delle funzionalità, oltre a opere architettoniche volte a garantire il comfort abitativo e prevenire il degrado dei materiali. La progettazione strutturale seguirà le linee guida delle NTC2018 e utilizzerà metodi di calcolo aggiornati per determinare le azioni e le resistenze degli elementi strutturali nuovi. Il progetto combinerà tecniche moderne e ricerca scientifica con un profondo rispetto per il patrimonio storico, garantendo la conservazione delle caratteristiche architettoniche e storiche dell’edificio, migliorandone al contempo la sicurezza e l’efficienza funzionale.
Progetto per la ristrutturazione di un edificio esistente in muratura
LIVADARU, ELENA CHELSEA
2023/2024
Abstract
The regulations regarding structural and seismic safety have undergone significant evolution since the 1970s, with the introduction of probabilistic analysis of structural safety and seismic standards for constructions in seismic zones with laws no. 1086 of November 5, 1971, and no. 64 of February 2, 1974. Initially, these regulations focused on reinforced concrete, neglecting masonry constructions, which only received specific regulations with the Ministerial Decree of November 20, 1987. Considering that about 60% of the Italian building stock consists of buildings with load-bearing masonry structures, the need for targeted interventions to ensure both the structural stability and energy efficiency of existing buildings becomes evident. The case study will address a historical building dating back to the 1400s, located in the district. Therefore, the project must comply with specific regulations for buildings in historic centers. To understand the building under study, a survey of the current state will be conducted, primarily based on a visual and historical investigation of the construction techniques used in the 1400s and before the 1800s. Diagnostics will be carried out through visual inspections and geometric surveys, supplemented by a historical analysis of the construction techniques used during the building's construction period. This analysis will provide a comprehensive overview of the current state of the structure and identify the most appropriate intervention methodologies. The project interventions will include the consolidation of the masonry with low-impact techniques and the complete replacement of the floors with new structures compliant with NTC2018. The project will be comprehensive, including structural works for the building's recovery, structural improvement interventions, and restoration of functionalities, as well as architectural works aimed at ensuring living comfort and preventing material degradation. The structural design will follow the guidelines of NTC2018 and use updated calculation methods to determine the actions and resistances of the new structural elements. The project will combine modern techniques and scientific research with a deep respect for the historical heritage, ensuring the preservation of the architectural and historical features of the building, while simultaneously improving its safety and functional efficiency.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/76593