INFLUENCE OF MASONRY INFILLS ON DYNAMIC BEHAVIOUR OF REINFORCED CONCRETE FRAMED STRUCTURE
INFLUENCE OF MASONRY INFILLS ON DYNAMIC BEHAVIOUR OF REINFORCED CONCRETE FRAMED STRUCTURE
复制标题
砌体填充对钢筋混凝土框架结构动力性能的影响
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
C. Chesi
中科院分区：
文献类型：
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作者：
Emilio Schiavo;L. Martinelli;C. Chesi
砌体填充墙在钢筋混凝土建筑中很常见。对于水平荷载，填充板可以极大地改变响应，将力吸引到结构中没有设计抵抗它们的部分。然而，在新建筑的设计和现有建筑的评估中，即使在今天，这些填充墙通常被视为非结构元素，它们对结构响应的影响通常被忽略，尽管结构设计师熟悉的建模工具能够以合理的计算成本很好地处理它们。这项工作旨在展示非结构砌体填充物对钢筋混凝土框架结构动力性能的影响。作为第一步，从文献中选择了一个最新的宏观模型，并讨论了涉及该建模方法的主要结构识别问题的最新进展。宏观模型被用来模拟，通过广泛使用的商业有限元计算机代码，在四层全尺寸钢筋混凝土框架上的实验活动，在意大利Ispra （VA）的欧洲委员会联合研究中心的欧洲结构评估实验室（ELSA）进行。给出并讨论了具有规范规定性能水平的数值模拟结果与物理测试结果的比较。
Presence of masonry infill walls in R.C. buildings is very common. For horizontal loading, infill panels can drastically modify the response, attracting forces to parts of the structure that have not been designed to resist to them. However, in the design of new buildings and in the assessment of existing ones, even today these infill walls are usually considered as non-structural elements and their influence in the structural response is generally ignored, even though modeling tools, familiar to structural designers, are well able to take care of them with reasonable computational costs. This work aims to show the effects of non-structural masonry infills on the dynamic behaviour of reinforced concrete framed structures. As a first step, a recent macro-model from the literature is selected and a state of the art of the main structural identification issues involving this modeling approach is discussed. The macro model is adopted to simulate, by means of a widely available commercial finite element computer code, an experimental campaign on a four-storey full scale reinforced concrete frame, carried out at the European Laboratory for Structural Assessment (ELSA) of the Joint Research Center of the European Commission in Ispra (VA) Italy. A comparison between the outcome from numerical simulations with code prescribed performance levels and the outcome of the physical testing is presented and discussed.