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首页> 外文期刊>Magazine of Concrete Research >Sectional analysis of engineered cementitious composite beams
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Sectional analysis of engineered cementitious composite beams

机译：工程胶凝复合梁的截面分析

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摘要

A procedure to predict the flexural response of an engineered cementitious composite (ECC) prismatic beam specimen subjected to four-point bending and its implementation into an Excel spreadsheet are described. It utilises the layered sectional analysis approach and nonlinear ECC constitutive models, allowing for the calculation of the moment-curvature relationship for any selected section of the beam specimen at various stages of loading. Further, the curvature-area method is employed to integrate the sectional response and determine the overall beam deflection profile. To this end, predictions by the proposed method are compared against three series of experiments available in the literature, to provide a better understanding of the relation between the tensile properties of ECC and the corresponding flexural response. It is shown that due to flexural cracking, the beam curvature over the shear span varies nonlinearly from the support and is found to influence the prediction of beam deflection. A series of empirical equations are presented to allow for the quick calculation of tensile strain capacity and tensile strength of ECC based upon flexural test data.
机译：描述了一种预测工程水泥质复合材料（ECC）棱柱梁试样经受四点弯曲的挠曲响应的程序，并将其实现为Excel电子表格。它利用分层截面分析方法和非线性ECC本构模型，可以计算梁在不同载荷阶段的任何选定截面的弯矩-曲率关系。此外，采用曲率面积方法来积分截面响应并确定总的光束偏转轮廓。为此，将所提出的方法的预测结果与文献中的三个系列实验进行了比较，以更好地理解ECC的拉伸性能与相应的挠曲响应之间的关系。结果表明，由于挠曲裂纹，梁在剪切跨度上的曲率从支座开始呈非线性变化，并被发现会影响梁挠度的预测。提出了一系列经验公式，以便基于弯曲试验数据快速计算ECC的拉伸应变能力和拉伸强度。

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  • 来源
    《Magazine of Concrete Research》 |2018年第22期|1135-1148|共14页
  • 作者

    Suryanto Benny; Reynaud Robin; Cockburn Blair;

  • 作者单位

    Heriot Watt Univ, Inst Infrastruct & Environm, Sch Energy Geosci Infrastruct & Soc, Edinburgh, Midlothian, Scotland;

    Heriot Watt Univ, Inst Infrastruct & Environm, Sch Energy Geosci Infrastruct & Soc, Edinburgh, Midlothian, Scotland;

    Heriot Watt Univ, Inst Infrastruct & Environm, Sch Energy Geosci Infrastruct & Soc, Edinburgh, Midlothian, Scotland;

  • 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
  • 中图分类
  • 关键词

    cement; cementitious materials; tensile properties;

    机译：水泥;胶凝材料;拉伸性能;

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