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Structural and thermal retrofitting of masonry walls: An integrated cost-analysis approach for the Italian context

机译：砌体墙体的结构和热改装：意大利背景的综合成本分析方法

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摘要

Constructions ageing is a relevant problem in developed country like Italy. In particular, in case of existing masonry buildings, retrofitting interventions aimed at improving structural and thermal performances represents an obvious need. At the same time, sustainability awareness of buildings life-cycle has grown in the last years. Consequently, the whole life-cycle of constructions should be analyzed and assessed during the design of retrofitting interventions. In order to take into account these aspects new design and planning methods are necessary. This paper presents an integrated approach to evaluate structural and thermal retrofitting strategies for masonry walls. Economic and ecological costs of each examined retrofitting solution are compared, taking into account thermal and seismic capacity demand of the construction site. Given the economic cost, a set of retrofitting solutions for masonry panels have been mapped with a couple of parameters (structural strength Vs thermal insulation). An analogous mapping, considering the ecological cost due to equivalent CO2 production, have been performed. A methodology to find the best solution among a set of retrofitting solutions is presented, depending on the location of the building and its seismic and thermal characteristics. Examples, based on six retrofitting techniques located in four different sites in Italy, are analyzed to explain the effectiveness and the feasibility of the proposed method. The comparison between ecological and economical cost allowed to highlight the characteristics of the different interventions. Thermal performance proved to be more important in cold weather conditions while structural retrofitting is preferable in high seismic risk areas.
机译：建筑老龄化是发达国家的相关问题，如意大利。特别是，在现有的砌体建筑物的情况下，针对结构性和热性能的改造干预措施代表了明显的需求。与此同时，过去几年的建筑物生命周期的可持续性意识已经增长。因此，应在改装干预的设计期间分析和评估结构的整个生命周期。为了考虑到这些方面，新的设计和规划方法是必要的。本文提出了一种综合方法，可以评估砌体墙壁的结构和热改装策略。比较了每种检查改造解决方案的经济和生态成本，考虑到施工现场的热和地震能力。鉴于经济成本，已经用几个参数（结构强度Vs绝热）映射了一套改装用于砌体面板的改造解决方案。考虑到由于同等二氧化碳生产引起的生态成本，因此已经进行了类似的映射。根据建筑物的位置及其地震和热特性，提出了一种在一组改装解决方案中找到最佳解决方案的方法。实例，基于位于意大利四种不同位点的六种改造技术，分析以解释所提出的方法的有效性和可行性。生态和经济成本之间的比较突出了不同干预措施的特征。在寒冷的天气条件下，热性能在寒冷的天气条件下更为重要，而结构改装在高地震风险区域中是优选的。

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  • 来源
    《Building and Environment》 |2019年第5期|127-136|共10页
  • 作者

    Mistretta Fausto; Stochino Flavio; Sassu Mauro;

  • 作者单位

    Univ Cagliari Dept Civil Environm Engn & Architecture I-09123 Cagliari Italy;

    Univ Cagliari Dept Civil Environm Engn & Architecture I-09123 Cagliari Italy;

    Univ Cagliari Dept Civil Environm Engn & Architecture I-09123 Cagliari Italy;

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