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首页> 外文期刊>Magazine of Concrete Research >New theoretical model for SSTT-confined HSC columns
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New theoretical model for SSTT-confined HSC columns

机译：SSTT约束HSC色谱柱的新理论模型

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摘要

The concrete-confining method using low-cost steel straps, also known as the steel-strapping tensioning technique (SSTT), has proven to be effective in increasing the load-carrying capacity and ductility of high-strength concrete (HSC). However, the technique is restricted to short columns subjected to concentric loads as most of the studies on the SSTT have focused on concentrically loaded short HSC specimens. The performance of the SSTT in confining eccentrically loaded slender HSC columns is not fully understood due to a scarcity of experimental and theoretical data. Against this background, a theoretical model for analysing slender SSTT-confined cylindrical HSC columns is developed based on a numerical integration method. A previously proposed stress-strain empirical model is employed to develop the theoretical model. The model is used to generate the load-deflection curves and axial load-moment interaction diagrams of SSTT-confined HSC columns. Based on comparisons with existing experimental results, the proposed theoretical model accurately captured the behaviour of SSTT-confined HSC columns. It is also concluded that the previously proposed stress-strain empirical model is reasonably accurate for SSTT-confined HSC columns of both circular and rectangular cross-section.
机译：使用低成本钢带的混凝土约束方法，也称为钢带张紧技术（SSTT），已被证明可有效地提高高强度混凝土（HSC）的承载能力和延展性。但是，该技术仅限于承受同心载荷的短柱，因为有关SSTT的大多数研究都集中在同心载荷的短HSC样品上。由于缺乏实验和理论数据，SSTT在偏心加载的细长HSC柱中的性能尚未完全了解。在此背景下，建立了基于数值积分方法的细长SSTT约束圆柱HSC柱分析模型。使用先前提出的应力-应变经验模型来发展理论模型。该模型用于生成SSTT约束的HSC柱的载荷-挠度曲线和轴向载荷-矩相互作用图。在与现有实验结果进行比较的基础上，提出的理论模型准确地捕获了SSTT限制的HSC色谱柱的行为。还得出结论，对于圆形截面和矩形截面的SSTT约束HSC柱，先前提出的应力应变经验模型是相当准确的。

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  • 来源
    《Magazine of Concrete Research》 |2014年第14期|674-684|共11页
  • 作者

    Chau Khun Ma; Abdullah Zawawi Awang; Wahid Omar;

  • 作者单位

    Faculty of Civil Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia;

    Faculty of Civil Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia;

    Faculty of Civil Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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