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This paper presents the essential components of an elasto-plastic material law for plain concrete under multiaxial loading conditions. The ultimate strength criterion is developed by evaluating more than 1500 multiaxial test results in all stress combinations for concrete grades up to 120 MN/m(exp2). The material parameters are formulated strength-dependent, but independent from the testing technique. The constitutive relations of the material law are formulated on the basis of an additional test program on drilled concrete cylinders 40/15 cm of concrete grades C 40, C 70, C 90, which was performed at the Technische Universität München in 1999/2000. The relevant material parameters are evaluated by regression analyses of the measured strains. The load history is reflected by using the irrecoverable plastic work as kind of a damage parameter.
This paper presents the essential components of an elasto-plastic material law for plain concrete under multiaxial loading conditions. The ultimate strength criterion is developed by evaluating more than 1500 multiaxial test results in all stress combinations for concrete grades up to 120 MN/m(exp2). The material parameters are formulated strength-dependent, but independent from the testing technique. The constitutive relations of the material law are formulated on the basis of an additional test program on drilled concrete cylinders 40/15 cm of concrete grades C 40, C 70, C 90, which was performed at the Technische Universität München in 1999/2000. The relevant material parameters are evaluated by regression analyses of the measured strains. The load history is reflected by using the irrecoverable plastic work as kind of a damage parameter.
Behaviour of high strength concrete under multiaxial stress states
Verhalten von hochfestem Beton unter multiaxialen Spannungszuständen
2002
15 Seiten, 8 Bilder, 21 Quellen
Conference paper
English
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