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首页> 外文期刊>Bulletin of earthquake engineering >Intervened URM buildings with RC elements: typological characterisation and associated challenges
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Intervened URM buildings with RC elements: typological characterisation and associated challenges

机译：使用RC元素介入URM建筑：类型学特征和相关挑战

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摘要

The past reconstruction processes that took place after important earthquakes, and the development and progressive use of reinforced concrete (RC) since the beginning of the twentieth century, led to the creation of a mixed unreinforced masonry-reinforced concrete typology, hereinafter designated as URM-RC. The implementation of such practices, mainly in retrofitting interventions of existing unreinforced masonry (URM) buildings, has been spread all over the world, especially due to numerous vague recommendations given in certain building codes. However, over the years, these derived mixed URM-RC buildings revealed to be extremely vulnerable to seismic loads, and their inherent complex structural behaviour is still understudied. Only in recent years researchers have started to turn their attention to the seismic vulnerability of these structures, by studying and observing their particular damage patterns, mechanisms and interaction effects from coupling RC structural elements to URM loadbearing walls. Moreover, the beneficial nature of structural interventions with RC on URM buildings located in seismically prone regions is still a contentious issue for most of the research community. In this context, the present paper represents a stepping stone for the thorough understanding of the existing derived mixed URM-RC building typologies. A comprehensive cataloguing and categorization of the different intervention typologies is presented in order to support a more reliable assessment of their seismic vulnerability in future studies, as well as to design proper strengthening interventions so as to avoid future disasters. Furthermore, a comprehensive array of open issues is given in a section dedicated to the associated challenges.
机译：经过重要地震的过去发生的重建过程，以及自二十世纪初以来的钢筋混凝土（RC）的开发和逐步利用导致了混合未粘合的砌体钢筋混凝土类型，下文称为URM- RC。实施此类做法，主要是在现有未成年的砌体（URM）建筑物的改造干预方面，已经遍布全球，特别是由于某些建筑规范中提供了许多含有众多含糊不清的建议。然而，多年来，这些衍生的混合URM-RC建筑物显示出极易受到地震载荷的影响，并且仍然将解读其固有的复杂结构行为。只有在近年来的研究人员开始关注这些结构的地震脆弱性，通过研究和观察从耦合RC结构元素到URM负载壁的特定损伤模式，机制和相互作用效应。此外，在地震普通地区的荨麻建筑物上与RC的结构干预的有益性仍为大多数研究界的争论问题。在这种情况下，本文代表了普通理解现有衍生的混合URM-RC建筑类型的梯度石头。提出了对不同干预类型的全面编目和分类，以支持在未来的研究中对其地震脆弱性的更可证项评估，以及设计适当的加强干预措施，以避免未来的灾害。此外，在致力于相关挑战的部分中给出了全面的开放问题。

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