Multiaxial mechanical model of ultra-high-performance concrete

被引：5
|
作者：
Gruenberg, Juergen [1 ]
Lohaus, Ludger [2 ]
Ertel, Christian [1 ]
Wefer, Maik [2 ]
机构：
[1] Leibniz Univ Hannover, Inst Massivbau, D-30167 Hannover, Germany
[2] Leibniz Univ Hannover, Inst Baustoffe, D-30167 Hannover, Germany
来源：
BETON- UND STAHLBETONBAU | 2007年 / 102卷 / 06期
关键词：
D O I：
10.1002/best.200700553
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The special and outstanding characteristics of ultra-high-performance concrete (UHPC) require the development of a multiaxial mechanical model for numerical investigations. With the three phases model it is possible to describe the behaviour of concrete from extremely brittle to more ductile using the characteristic development of the principal meridians, in particular the compressive meridian of the fracture surface. Furthermore, the anisotropic damage due to fatigue is considered in the principal-stress-area by different grades of damage in relation to the tensile and the compressive meridian. In experimental investigations, the necessary parameters are determined to calibrate the three phases model for UHPC by specifying the principal meridians for static loading. In further dynamic investigations the parameters for an anisotropic damage model are determined for fatigue loading.
引用
收藏
页码：388 / 398
页数：11
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