摘要
为进一步探究高强钢绞线网与水泥基复合材料(ECC)的黏结滑移关系,通过高强钢绞线网在ECC内部黏结滑移微观机理分析,充分考虑钢绞线直径对其黏结滑移曲线初始切线刚度的影响,引入损伤力学理论对现有钢绞线网与ECC黏结滑移模型进行了修正.经模型验证,分析表明修正后模型计算结果与试验结果符合良好,尤其是上升段具有更好的精确性.此外,将修正后模型引入到有限元模拟分析中,采用ABAQUS软件中的Spring-2非线性弹簧单元来模拟高强钢绞线网与ECC的黏结滑移特性,对高强钢绞线网与ECC拉拔试验进行有限元模拟分析.结果表明:数值分析结果与试验结果符合良好,进一步验证了模型的精确性,以及数值分析方法的可行性和适用性.
The purpose of this article is to further explore the bond-slip relationship of high-strength steel strand meshes and engineered cementitious composites(ECC).Based on the microscopic mechanism analysis of the bond-slip of steel strand meshes in ECC,the existing bond-slip model was revised using the theory of damage mechanics,which fully considered the influence of the steel strand diameter on the initial tangent stiffness of the bond-slip curve. The results of the model verification analysis show that the calculated results using the revised model are in good agreement with the test results, especially in the ascending section. In addition,the revised model was applied to the finite element analysis by using the software ABAQUS to simulate the pullout test,in which the Spring-2 nonlinear spring element was used to stimulate the bond behavior between steel strand meshes and ECC.The simulation results show that the numerical analysis fits the experimental result well,which further verifies the accuracy of the model and the feasibility and applicability of the numerical analysis method.
作者
朱俊涛
侯晶强
王新玲
李可
ZHU Juntao;HOU Jingqiang;WANG Xinling;LI Ke(School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第6期103-108,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51708511,51879243,U1804137)
住房和城乡建设部科学技术计划资助项目(2019-K-059)
河南省博士后科学基金资助项目(201902014)
中国博士后科学基金资助项目(2020M672236)。
关键词
复合材料
水泥基复合材料
损伤演化
黏结滑移关系
数值模拟
composite materials
engineered cementitious composites(ECC)
damage evolution
bond-slip relationship
numerical simulation
作者简介
朱俊涛(1983-),男,副教授;通信作者:李可,副教授,E-mail:irwinlike@163.com.
