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首页> 外文会议>International Conference on Computer Engineering and Applications >Seismic performance of r.c. framed buildings retrofitted using modern techniques: FRP versus base-isolation and added damping
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Seismic performance of r.c. framed buildings retrofitted using modern techniques: FRP versus base-isolation and added damping

机译：R.C的地震性能。使用现代技术改造的框架建筑物：FRP与碱隔离和添加阻尼

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The main purpose of this work is to compare different criteria for the seismic strengthening of r.c. framed buildings in order to find the optimal combinations of these retrofitting techniques. To this end, a numerical investigation is carried out with reference to the town hall of Spilinga (Italy), a r.c. framed structure with an L-shaped plan built at the beginning of the 1960s. Five structures are considered, derived from the first by incorporating: carbon fibre reinforced polymer (FRP)-wrapping of all columns; base-isolation, with high-damping-laminated-rubber bearings (HDLRBs); added damping, with hysteretic damped braces (HYDBs); FRP-wrapping of the first storey columns combined with base-isolation or added damping. A three-dimensional fibre model of the primary and retrofitted structures is considered; bilinear and trilinear laws idealize, respectively, the behaviour of the HYDB, providing that the buckling be prevented, and the FRP-wrapping, without resistance in compression, while the response of the HDLRB is simulated by using a viscoelastic linear model. The effectiveness of the retrofitting solutions is tested with nonlinear dynamic analyses based on biaxial accelerograms, whose response spectra match those in the Italian seismic code.
机译：这项工作的主要目的是比较不同标准的R.C的地震增强标准。框架建筑物为了找到这些改造技术的最佳组合。为此，参考施工中心（意大利），R.C.的城镇大厅进行数值调查。框架结构与20世纪60年代初建造的L形计划。考虑五种结构，通过掺入所有柱的碳纤维增强聚合物（FRP）衍生自第一个结构;碱隔离，具有高阻尼层压橡胶轴承（HDLRB）;增加阻尼，滞后损伤括号（HADB）; FRP包装的第一层柱与基准隔离或添加阻尼相结合。考虑了初级和改造结构的三维光纤模型;双线性和三线性定律分别理想，分别熔点的行为，提供屈曲，而没有压缩阻力的FRP包装，而通过使用粘弹性线性模型模拟HDLRB的响应。基于双轴加速局的非线性动态分析测试了改造解决方案的有效性，其响应光谱与意大利地震代码中的响应谱匹配。

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