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首页> 外文期刊>Bulletin of earthquake engineering >Local effects on RC frames induced by AAC masonry infills through FEM simulation of in-plane tests
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Local effects on RC frames induced by AAC masonry infills through FEM simulation of in-plane tests

机译：AAC砌体填充通过有限平面测试填充的RC帧的局部影响

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Unreinforced masonry infills are widely used in many parts of the world and it is common practice for seismic design to use simplified methods that usually do not take into account the interaction between the infill and the structure. Starting from the 1950s, many researchers have investigated the lateral response of masonry infills focusing on several different topics. The scientific interest on masonry infills is continuously raising due to the unsatisfactory seismic response of the infilled frame structures observed during post-event inspections and to the difficulty to contrive a widely scientifically and practical recognized solution. Although some modern codes consider the presence of infills with some specifications to prevent damage in the masonry panels and global and local effects on the structure, an effective evaluation of these detrimental effects has not been achieved yet. Within this paper, a FEM simulation of in-plane pseudo-static cyclic tests on a RC frame specimen infilled with unreinforced Autoclaved Aerated Concrete (AAC) masonry infill has been performed in order to study accurately the influence and the interaction of the infill with the RC structure. The experimental results performed by Calvi and Bolognini (J Earthq Eng 5:153-185, 1999), and Penna and Calvi (Campagna sperimentale su telai in c.a. con tamponamenti in Gasbeton (AAC) con diverse soluzioni di rinforzo" (in Italian), 2006) on one-bay one-storey full scale specimens are taken as reference. Non-linear static analyses using a "meso-modelling" approach have been carried out. The masonry used in the model has been calibrated according to tests of mechanical characterization and to in-plane cyclic tests on load-bearing AAC masonry conducted by Costa et al. (J Earthq Eng 15:1-31, 2011). The analyses performed have allowed to investigate the local effects on the frame and, in particular, the changes in the moment and shear demands on the RC elements due to the presence of the AAC infill
机译：无筋砌体填充物在世界许多地方广泛使用，抗震设计的常见做法是使用简化方法，通常不考虑填充物和结构之间的相互作用。从20世纪50年代开始，许多研究人员针对几个不同的主题研究了砌体填充物的侧向响应。由于在事后检查中观察到填充框架结构的地震反应不令人满意，并且很难设计出一种广泛科学和实用的解决方案，因此对砌体填充物的科学兴趣不断提高。虽然一些现代规范考虑了一些规范的存在，以防止砖石板的损伤和对结构的全局和局部影响，但是这些损伤效应的有效评估还没有实现。为了准确研究填充物对钢筋混凝土结构的影响和相互作用，本文对填充有无筋蒸压加气混凝土（AAC）砌体填充物的钢筋混凝土框架试件进行了面内拟静力循环试验的有限元模拟。卡尔维和博洛尼尼的实验结果（J Earthq Eng 5:153-1851999），以及Penna和Calvi（Campagna sperimentale su telai in c.a.con tamponamenti in Gasbeton（AAC）con di rinforzo（意大利语）con di di rinforzo，2006年）在一个开间一层的全尺寸样本上作为参考“已经采取了这种方法。模型中使用的砌体已经根据Costa等人进行的力学特性试验和承载AAC砌体的平面内循环试验进行了校准。（J Earthq Eng 15:1-312011）进行的分析允许调查框架的局部影响，尤其是由于AAC填充物的存在，钢筋混凝土构件的弯矩和剪力需求的变化

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