A continuum damage modeling of quasi-static fatigue strength of plain concrete

被引：56
|
作者：
Mai, S. H. [1 ,2 ]
Le-Corre, F. [2 ]
Foret, G. [1 ]
Nedjar, B. [1 ]
机构：
[1] Univ Paris Est, Lab Navier ENPC IFSTTAR CNRS, Ecole Ponts ParisTech, F-77455 Marne La Vallee, France
[2] ALSTOM Transport, TGS, R&D Railway Track, F-93482 St Ouen, France
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2012年 / 37卷
关键词：
Fatigue; Concrete; Wohler curves; Flexion; Continuum Damage; FORMULATION; BEHAVIOR; GRADIENT;
D O I：
10.1016/j.ijfatigue.2011.10.006
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A three-dimensional phenomenological model is developed to describe the fatigue behavior of concrete. The approach is based on the framework of continuum damage mechanics where the fatigue model is derived by means of Mango's formulation where the yield concept is replaced by a loading-unloading irreversibility concept allowing to account for damage accumulation even for loading levels below the yield surface. Specifically, a static damage model is proposed and deeply investigated. Its extension to the fatigue range is proposed through two different functions of the power-law-type. While the first one only needs one additional parameter, the second one needs three additional parameters. In all cases, these latters need to be identified by means of fatigue tests through Wohler curves. In this paper, flexural fatigue tests have been performed on a concrete the formulation of which is close to the one used for urban railway slabs. A set of numerical examples is presented. It shows good agreements with the present experimental results together with some data found in the literature. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：79 / 85
页数：7
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