Structural behavior of a lightweight, textile-reinforced concrete barrel vault shell
Structural behavior of a lightweight, textile-reinforced concrete barrel vault shell
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DOI：
10.1016/j.compstruct.2017.03.069
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发表时间：
2017-07-01
影响因子：
6.3
通讯作者：
Chudoba, R.
中科院分区：
文献类型：
--
作者：
Sharei, E.;Scholzen, A.;Chudoba, R.
纺织品增强混凝土（TRC）作为一种新型复合材料，在制造薄壁轻质结构方面具有广泛的性能和灵活性。在细集料高性能混凝土中应用纺织增强材料，使结构混凝土的尺寸非常小的厚度。这种可能性允许制造具有复杂几何形状的薄壁TRC壳体结构。另一方面，结构规划和施工需要新的建模方法来理解这种形式的结构行为。本文介绍了一个大型TRC穹顶壳的制作过程，并进行了试验研究。在两步加载方案下对壳体结构进行了试验，以研究其承载性能。本文的特别重点是通过一个各向异性应变硬化材料模型，专门开发的模拟TRC壳的结构行为的分析。使用非线性有限元模拟得到的预测已与测试结果进行了比较，以验证建模方法。所进行的研究是用来评估和讨论的结构冗余包括在应用的线性极限状态评估程序。(C)2017爱思唯尔有限公司版权所有
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.