离散裂纹的一维拉伸加劲分析

D. Yankelevsky, M. Jabareen
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引用次数: 1

摘要

本文介绍了一种新的一维(1-D)模型的发展,以模拟开裂混凝土的拉伸加筋。该模型通过混凝土-钢筋复合材料的刚度建立了解析关系,并装配了一组有限元。所确定的单元公式的优点之一是其刚度矩阵是精确的,因为它是由复合单元的控制微分方程导出的。该公式提供了沿钢筋的应力、应变和位移的完整一维分布,以及沿共同界面的粘结应力和滑移变化。通过数值算例验证了模型的能力和预测结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of 1-D Tension Stiffening with Discrete Cracks
The paper describes the development of a new one dimensional (1-D) model to simulate tension stiffening of cracked concrete. The model formulates the analytical relationships through stiffness of the concrete-rebar composite and assembles a set of finite elements. One of the advantages of the element's formulation identified was that its stiffness matrix is exact in that it is derived from the governing differential equations of the composite element. Using the formulation provides a complete 1-D distribution of stresses, strains and displacements along the rebar as well as the bond stress and slip variation along the common interface. The paper presents numerical examples to demonstrate the model capabilities and its predictions.
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