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Evaluation of structural capacity of triangular and hexagonal reinforced concrete free-form shells

机译:三角形和六角形钢筋混凝土自由型壳的结构承载力评估

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This paper presents a study of the structural capacity of reinforced concrete free-form shells, with hexagonal and triangular plants supported on corners. Initially, it presents the computational models for free-form shells generation and the parameters used in a linear static analysis. From the results of this analysis, the conditions of minimum thickness in which the structural behavior of the shells agrees with the membrane theory of thin shells are defined. Then, these shells are submitted to nonlinear pushover analysis, considering the plasticity and the accumulation of damage in each load increase. To determine the capacity of these shells, the parametric analysis is performed with the variation of the mechanical properties and the directions of the application of the horizontal force, taking the structure to the failure point. The results present the elastic-plastic behavior of shell structures under the action of horizontal forces. Therefore, this study aims to broaden the knowledge on the performance of the free-form shells under the action of external horizontal loading, such as structures under seismic action.
机译:本文对钢筋混凝土自由型壳的结构能力进行了研究,六角形和三角形的植物支撑在角上。最初,它介绍了用于生成自由形式弹壳的计算模型以及线性静态分析中使用的参数。根据分析结果,确定了薄壳的结构行为与薄壳膜理论一致的最小厚度条件。然后,考虑可塑性和每次载荷增加时损伤的累积,将这些壳体进行非线性推覆分析。为了确定这些弹壳的能力,需要进行参数分析,并改变机械性能和施加水平力的方向,从而使结构达到破坏点。结果显示了在水平力作用下壳结构的弹塑性行为。因此,本研究旨在拓宽关于外部水平荷载作用下的自由形式壳体性能的知识,例如地震作用下的结构。

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