Design model for the fatigue behaviour of normal strength, high strength and ultra-high strength concrete

被引：21
|
作者：
Lohaus, Ludger [1 ]
Wefer, Maik [2 ]
Oneschkow, Nadja [1 ]
机构：
[1] Leibniz Univ Hannover, Inst Baustoffe, D-30167 Hannover, Germany
[2] Quick Mix Grp Gmbh & Co KG, D-49090 Osnabruck, Germany
来源：
BETON- UND STAHLBETONBAU | 2011年 / 106卷 / 12期
关键词：
D O I：
10.1002/best.201100070
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Design model for the fatigue behaviour of normal strength, high strength and ultra-high strength concrete Fatigue design according to CEB-FIP Model Code 90 [1] is limited to concrete grades of up to C120. In addition, the design rules include a strength dependent reduction of the fatigue reference strength, which leads to uneconomical design of high strength concretes. Considering today's existing comprehensive knowledge regarding the fatigue behaviour of normal strength and high strength concretes, the size of this reduction is no more justifiable. In this article, a newly developed design model for fatigue is presented, which enables an economic and safe design of normal strength, high strength and ultra-high strength concretes based on fatigue limit state. This new design approach is integrated into the design concept of the CEB-FIP Model Code 90 [1], thereby guaranteeing a simpler application.
引用
收藏
页码：836 / 846
页数：11
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