摘要
本文对纤维编织网水泥基复合材料轴拉全曲线本构模型进行了研究。针对纤维编织网增强水泥基复合材料单轴受拉破坏的四个不同阶段,建立了受拉全曲线力学模型,其中,采用刚度衰减系数描述受拉过程中刚度下降的过程,并分别给出了不同阶段的刚度衰减系数表达式,进而与现有试验结果进行了对比分析。结果表明:本文理论模型与试验结果对比吻合较好。此外,本文模型包含了受拉全过程中的下降段,能够更完整地描述纤维编织网水泥基复合材料受拉破坏全过程。本文的研究进一步明确了纤维编织网水泥基复合材料的单轴拉伸性能,可为提高构件延性的设计提供理论基础。
Complete curve constitutive model of textile reinforced cement-based composites under uniaxial tension has been analyzed in this paper. Based on four different damage stages of this composites under uniaxial tension, complete curve mechanical model was established, which demonstrates stiffness degradation behavior by coefficients and builds the complete tensile model including failure stage. Exemplary calculation is compared with the experimental data. As it has been stated that： this model presents a satisfactory agreement with the test results. Moreover, this model completely describes damage behaviour of textile reinforced cement-based composites under uniaxial tension, including failure stage. This study further shows the uniaxial tensile properties of textile reinforced cement-based composites, which will lay a theoretical foundation for improving ductility design.
作者
田稳苓
张希瑾
卿龙邦
TIAN Wen-ling ZHANG Xi-jina QING Long-bang(a. Civil and Transportation Engineering Schoo b. Civil Engineering Technology Research Center of Hebei Province, Hebei University of Technology, Tianjin 300401, Chin)
出处
《土木工程与管理学报》
北大核心
2017年第2期25-28,共4页
Journal of Civil Engineering and Management
基金
国家自然科学基金(51309073)
关键词
纤维编织网水泥基复合材料
刚度衰减系数
破坏阶段
轴拉全曲线本构模型
textile reinforced cement-based composites
the coefficient of stiffness degradation
the stageof failure
uniaxial tensile complete curve constitutive model
作者简介
田稳苓（1961-），女，河北大城人，教授，博士，研究方向为新型建筑材料及结构体系（Email：13920725855@163．com）
