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首页> 外文期刊>Journal of Composites for Construction >Simplified Model for the Torsional Strength of Concrete Beams with GFRP Stirrups
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Simplified Model for the Torsional Strength of Concrete Beams with GFRP Stirrups

机译：GFRP箍筋混凝土梁抗扭强度的简化模型。

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摘要

An international committee on shear and torsion reported that giving physical significance for the torsion design is an upcoming challenge. The purpose of this paper is to propose a reasonably accurate and relatively simple model capable of predicting the torsional strength of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) stirrups. In this paper, a database for concrete beams reinforced with GFRP stirrups, tested under torsion, is compiled. The implementation of the torsion design provisions of the conventional steel-reinforced-concrete design codes is discussed. A few selected strength models were used to predict the ultimate torsional strength of the tested beams. The predicted strength was compared with that measured during testing. The comparison showed that more improvement is required in calculating the inclination of the diagonal concrete strut and the effective strain in the GFRP stirrups. Two strength models were modified and proposed. The proposed models showed better compliance and consistency with the experimental results compared to the available models and design codes. In addition, the proposed models are noniterative and simple to implement. However, further experimental testing will help refine the proposed models. (C) 2014 American Society of Civil Engineers.
机译：国际剪力和扭力委员会报告说，赋予扭力设计以物理意义是一项即将到来的挑战。本文的目的是提出一个合理准确且相对简单的模型，该模型能够预测玻璃纤维增​​强聚合物（GFRP）箍筋增强的混凝土梁的抗扭强度。在本文中，建立了用玻璃纤维增​​强筋箍筋加固的混凝土梁的抗扭试验数据库。讨论了常规钢筋混凝土设计规范中扭转设计规定的实施。使用一些选定的强度模型来预测测试梁的极限抗扭强度。将预测强度与测试期间测得的强度进行比较。比较表明，在计算对角混凝土支柱的倾斜度和GFRP箍筋中的有效应变时，还需要进行更大的改进。修改并提出了两种强度模型。与可用的模型和设计规范相比，所提出的模型显示出与实验结果更好的一致性和一致性。此外，提出的模型是非迭代的，易于实现。但是，进一步的实验测试将有助于完善建议的模型。 （C）2014年美国土木工程师学会。

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