曹周阳,何康熙,关晓迪
CAO Zhou-yang,HE Kang-xi,GUAN Xiao-di

• 1:郑州航空工业管理学院土木建筑学院
• 2:中国建筑第七工程局有限公司
• 3:西安理工大学土木建筑工程学院

摘要(Abstract)：

基于颗粒流软件PFC~(2D)，模拟了纤维混凝土试样的劈裂抗拉破坏过程，分析了摩擦因数、pb＿ten参数、pb＿coh参数以及宽度比对纤维混凝土数值试样力学性能的影响。试验结果表明：摩擦因数和pb＿coh参数对数值试样的弹性模量和劈裂抗拉强度影响不大；pb＿ten参数对数值试样的力学性能的影响较大；随着宽度比的增加，数值试样的抗拉强度和变形模量都增大，当宽度比较大时，垫条周围会出现几条细小裂缝，然后向中部集中，进而在中部形成一条贯通的主裂缝。
Based on the particle flow software PFC~(2D), the splitting and tensile failure process of fiber reinforced concrete samples was simulated, and the effects of friction coefficient, pb＿ten parameter, pb＿coh parameter and width ratio on the mechanical properties of numerical fiber reinforced concrete samples were analyzed. The results show that the friction coefficient and pb＿coh parameter have little effect on the elastic modulus and splitting tensile strength of numerical samples, The pb＿ten parameter has a great influence on the mechanical properties of the numerical samples. As the width ratio increases, the tensile strength and deformation modulus of the numerical samples increase. When the width ratio is large, several small cracks will appear around the gasket and then concentrate in the middle, and then form a through main crack in the middle.

关键词(KeyWords)： 纤维混凝土;数值模拟;颗粒流软件;细观参数;力学性能
fiber concrete;numerical simulation;particle flow software;meso-structure parameter;mechanical property

Abstract:

Keywords:

基金项目(Foundation): 河南省科技攻关项目(212102310967)

作者(Author): 曹周阳,何康熙,关晓迪
CAO Zhou-yang,HE Kang-xi,GUAN Xiao-di

DOI: 10.16090/j.cnki.hcxw.2022.09.015

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