Modeling of Combined Thermal and Mechanical Action in Concrete

Abstract

To describe the response of concrete under combined thermal and mechanical action it is necessary to abandon the usual assumption that thermal strain and mechanical strain can be treated as mutually independent, additive components. A generalized model which accounts for the thermomechanical interaction observed in tests is discussed. The basic feature of the formulation is that the thermal strain rate is considered to be a function of both rate of temperature change and the current state of stress. The problems dealt with in the paper are of great practical interest in the design of concrete structures exposed to severe thermal loading.

Keywords

This publication has 8 references indexed in Scilit:

Effects Of Biaxial Loading On The High Temperature Behaviour Of Concrete
Fire Safety Science, 1986
Strain of concrete during first heating to 600°C under load
Magazine of Concrete Research, 1985
Transient thermal strain of concrete: literature review, conditions within specimen and behaviour of individual constituents
Magazine of Concrete Research, 1985
Constitutive equation of wood at variable humidity and temperature
Wood Science and Technology, 1985
Concrete creep at variable humidity: constitutive law and mechanism
Materials and Structures, 1985
On the multiaxial behaviour of concrete exposed to high temperature
Nuclear Engineering and Design, 1983
The effect of temperature change upon the creep of mortar under torsional loading
Magazine of Concrete Research, 1973
On representations for isotropic functions
Archive for Rational Mechanics and Analysis, 1969