新旧混凝土粘结的断裂韧度数值模拟及分析

Stimulating and analyzing fracture toughnesses of the adherence between young on old concrete

应用ANSYS程序对新旧混凝土粘结试件进行有限元分析 通过对不同断口深度、不同弹性模量的新旧混凝土粘结试件的断裂韧度数值模拟,得到的有限元分析结果与实测混凝土粘结试件的力学行为一致,验证了可以将高强度等级混凝土应用于新旧混凝土粘结中。

Finite element analysis of adherence specimens between young and old concrete by using ANSYS program was made.Through the simulation of fracture toughnesses of the specimens with different fracture depth and elastic modulus, it is shown that results by the finite element analysis are consistent with the results of measuring the specimens in mechanic behavior.It is verified that a high strength concrete,whose elascic modulus should be above C20,can be applied as adherence materials for young and old concrete.