Creep and fracture in concrete: A fractional order rate approach

被引：37

作者：

Barpi, F. ^{[1
]}

Valente, S. ^{[1
]}

机构：

[1] Department of Structural and Geotechnical Engineering, Politecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy

来源：

Engineering Fracture Mechanics | 2002年 / 70卷 / 05期

关键词：

Finite element method - Fracture - Rheology - Strain;

D O I：

10.1016/S0013-7944(02)00041-3

中图分类号：

学科分类号：

摘要：

The paper analyses the interaction between strain-softening and time-dependent behaviour in the case of quasi-static fracture of concrete. A viscous element based on a fractional order rate law is coupled with a micromechanical model for the fracture process zone. This approach makes it possible to include a whole range of dissipative mechanisms in a single rheological element. Creep fracture in mode I conditions is analysed through the finite element method, the cohesive (or fictitious) crack model and a new space and time integration scheme. The comparison with creep tests executed on three-point bending conditions shows a good agreement. © 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：611 / 623