高强混凝土与钢筋粘结-滑移的数值模拟  

Numerical Simulation of Bond-slip between HSC and Steel Bar

作　　者：赵卫平[1] 范玉辉[1] 李刚[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《兰州交通大学学报》2010年第6期20-24,共5页Journal of Lanzhou Jiaotong University

摘　　要：在梁的非线性有限元分析中,钢筋与混凝土界面的粘结-滑移是十分复杂的问题.为研究粘结长度对梁力学性能的影响,以粘结长度为变化参数构造了三根模型梁.基于模型梁几何参数,利用以前学者由试验得到的粘结滑移曲线,采用非线性弹簧单元COMBIN39模拟了钢筋和混凝土之间的粘结滑移,建立了粘结滑移关系曲线与弹簧单元F-D曲线的转换技术.基于ANSYS强大的后处理功能对考虑粘结滑移问题的混凝土模型梁进行了细致的研究,在一定程度上丰富了梁式构件的数值仿真理论.Bond-slip relationship is very complex issue in the non-linear finite element analysis of beams.Three model beams with different bond length were constructed to study the mechanical properties.Based on the geometric parameters of the model beam as well as bond-slip curve obtained from experiments by former scholars,this paper has simulated the bond-slip relationship between steel bars and concrete with spring element COMBIN39,and conversion technology from bond-slip curve to spring element F-D curve is proposed.Based on the powerful ANSYS post-processing capacity,a detailed study considering the issue of bond-slip relationship is carried out.The result has enriched the numerical simulation theory of beams in a certain extent.

关 键 词：高强混凝土 细晶粒钢筋 粘结-滑移 数值模拟 ANSYS 

分 类 号：TU398[建筑科学—结构工程]