Sustainable Renovation of Public Buildings through Seismic–Energy Upgrading: Methodology and Application to an RC School Building

IF 2.7 Q2 CONSTRUCTION & BUILDING TECHNOLOGY Infrastructures Pub Date : 2023-11-27 DOI:10.3390/infrastructures8120168
G. Santarsiero, Antonio D’Angola, Giuseppe Ventura, A. Masi, V. Manfredi, Valentina Picciano, A. Digrisolo
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Abstract

There are many existing buildings for which seismic rehabilitation interventions are required, especially in earthquake-prone areas like Italy. At the same time, the deep energy crisis that Europe is facing highlights the need for sustainable techniques that are able to increase the energy efficiency of buildings. In order to mitigate the social and cultural obstacles for deep renovations of buildings, effective techniques and methods are required to avoid relocating users, which often discourages such interventions. To this purpose and as the main novelty, this research is aimed at presenting a new strengthening technique for reinforced concrete buildings that is able to integrate structural seismic strengthening and energy efficiency improvements. It is made up of new framed structures connected from the outside to the existing building, thus reducing the intrusiveness and relocation needs of users. At the same time, the seismic strengthening technique is conceived for an optimal coupling with energy saving interventions like high-performance external insulation finishing systems. In this study, these techniques are described and applied to a reinforced concrete (RC) school building designed only for gravity loads, according to outdated standards. The results show that the considered strengthening technique increases the seismic performance of the building with respect to both life safety and damage limitation requirements, avoiding any further local interventions to the building’s interior. On the other hand, the energy renovation allows for significant savings, since the resulting reduction in the total non-renewable energy consumption is larger than 80%.
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通过抗震节能改造实现公共建筑的可持续翻新:方法论及在一所皇家中学校舍中的应用
有许多现有建筑需要进行抗震修复干预,尤其是在意大利等地震多发地区。与此同时,欧洲正面临着严重的能源危机,这凸显了对能够提高建筑能效的可持续技术的需求。为了减少对建筑物进行深度翻新的社会和文化障碍,需要采用有效的技术和方法来避免用户搬迁,因为用户搬迁往往会阻碍此类干预措施的实施。为此,作为主要的新颖之处,这项研究旨在为钢筋混凝土建筑提出一种新的加固技术,能够将结构抗震加固和提高能效结合起来。它由从外部连接到现有建筑的新框架结构组成,从而减少了对用户的干扰和搬迁需求。同时,抗震加固技术还与节能干预措施(如高性能外墙保温装饰系统)实现了最佳耦合。本研究介绍了这些技术,并将其应用于根据过时标准设计的仅承受重力荷载的钢筋混凝土(RC)教学楼。结果表明,所考虑的加固技术提高了建筑物的抗震性能,同时满足了生命安全和限制破坏的要求,避免了对建筑物内部的进一步局部干预。另一方面,能源改造可节省大量能源,因为不可再生能源的总消耗量减少了 80% 以上。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Infrastructures
Infrastructures Engineering-Building and Construction
CiteScore
5.20
自引率
7.70%
发文量
145
审稿时长
11 weeks
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