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Structural behavior of a lightweight, textile-reinforced concrete barrel vault shell

机译：轻质，纺织增强的混凝土桶形拱顶壳体的结构性能

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Textile-reinforced concrete (TRC) as a novel composite material offers a wide range of capabilities and flexibility in the manufacturing of thin-walled, lightweight structures. The application of textile reinforcement in fine aggregate high-performance concrete has enabled the dimensioning of structural concrete in very small thicknesses. This possibility allows for the fabrication of thin-walled TRC shell structures with complex geometries. On the other hand, structural planning and construction require new modeling approaches to comprehend the structural behavior of such forms. In this paper, we present the fabrication procedure of a large-scale TRC vault shell, together with the performed experimental study. The shell structure was tested under a two-step loading scenario to study the load-bearing behavior. The particular focus of the paper is on the analysis of the structural behavior by means of an anisotropic strain-hardening material model specifically developed for the simulation of TRC shells. The prediction obtained using the nonlinear finite element simulation has been compared with the test results to validate the modeling approach. The performed studies are used to evaluate and discuss the structural redundancy included in the applied linear ultimate limit state assessment procedure. (C) 2017 Elsevier Ltd. All rights reserved.
机译：纺织增强混凝土（TRC）作为一种新型复合材料，在制造薄壁，轻质结构时提供了广泛的功能和灵活性。纺织增强材料在细骨料高性能混凝土中的应用使结构混凝土的尺寸非常小。这种可能性允许制造具有复杂几何形状的薄壁TRC壳结构。另一方面，结构规划和建造需要新的建模方法来理解这种形式的结构行为。在本文中，我们介绍了大型TRC跳马壳的制造过程，并进行了实验研究。在两步加载方案下对壳结构进行了测试，以研究承载行为。本文的重点是通过专门为模拟TRC壳而开发的各向异性应变硬化材料模型来分析结构行为。使用非线性有限元模拟获得的预测结果已与测试结果进行了比较，以验证建模方法。进行的研究用于评估和讨论应用的线性极限状态评估程序中包括的结构冗余。 （C）2017 Elsevier Ltd.保留所有权利。

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