钢筋混凝土粘结滑移本构关系建立方法的研究

Study on methods to establish constitutive relationships of the bond stress and relative slip

基于研究锈蚀钢筋混凝土动态粘结性能的需要,对前人建立粘结—滑移关系的方法进行了分析比较,在此基础上提出了一种新方法。该法在确定界面处混凝土变形时引入界面混凝土等效应变cεie和修正系数ηi等参数,从而最大限度地利用了实测资料,增加了公式建立的科学依据。

In order to study the dynamic bond behavior of corroded steel bars and concrete, the methods which have been used to establish constitutive relationships of the bond stress and relative sllp of bars and concrete have been discussed. Meanwhile, a new method was presented, in which the parameters of equivalent strain of concrete on interface εcie and coefficient of correction ηi et al, were drawn into. Then, the laboratory data was utilized sufficiently, and scientific nature to establish formula was increased.