Thermal Stress Analysis Based on Equivalent Age of Heterogeneous Mass Concrete

Abstract:

In order to analysis thermal stress of mass concrete accurately, material properties of mass concrete are studied by numerical simulation method, and the equivalent age is introduced to describe the mechanical properties of concrete. The calculation models of concrete mechanical parameters are summarized, and then the calculation procedures are established on the basis of equivalent age. In this way, the temperature and temperature history are considered in these models. Meanwhile, the governing equation and computer program of the thermal stress based on the equivalent age are developed. The comparison of the numerical example using proposed method and conventional FEM method shows that the proposed method performs more adaptable and accurate.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 3256-3262
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.3256
• Online since: August 2013
• Authors: Pei Fang Su, Xing Li Lu
• Keywords: Concrete, Degree of Maturity, Equivalent Age, Finite Element Method (FEM), Thermal Stress

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