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FEM investigation of concrete silos damaged and reinforced externally with CFRP

机译：CFRP外部损坏和加强混凝土筒仓的有限元调查

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The present work investigates the reinforcement of concrete wheat-grain silos under initial damage. The reinforcement is achieved by mounting bands of carbon fiber reinforced polymer (CFRP) on the external walls of the silo. 4 modes of reinforcement are adapted according to the width of the band, the gap between two bands, the height of reinforcement and the number of layers achieved through banding. Analytical analyses were conducted using the Reimbert method and the Eurocode 1 Part 4 method, as well as numerically through the finite element software Abaqus. Results show that the normal pressure reaches a peak value when approaching the silo hopper. Initial damage in a concrete silo was first determined using a 3D geometrical model, while the damage analyses were conducted to optimize the CFRP reinforcement by mounting 2 CFRP bands close together above and below the cylinder-hopper joint. Increasing the number of banding layers could produce better performance as the damage was slightly decreased from 0.161 to 0.152 for 1 and 4 layers respectively.
机译：本作在初始损害下调查了混凝土小麦晶粒筒仓的加强。通过在筒仓的外壁上安装碳纤维增强聚合物（CFRP）的磁带来实现加强件。 4加强模式根据带宽的宽度，两个带之间的间隙，加强的高度和通过扎带实现的层数。使用Reimbert方法和Eurocode 1部分4方法进行分析分析，以及通过ABAQUS的有限元软件来实现的。结果表明，当接近筒仓料斗时，常压达到峰值。首先使用3D几何模型确定混凝土筒仓中的初始损坏，同时进行损坏分析，以通过安装2个CFRP带在汽缸 - 料斗接头上方和下方靠近靠近的CFRP带进行优化CFRP增强。增加条带层的数量可以产生更好的性能，因为分别损坏从0.161到0.152略微降低1和4层。

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