TRANSACTIONS OF THE JAPANESE SOCIETY OF IRRIGATION, DRAINAGE AND RECLAMATION ENGINEERING, Volume 167, Page 81-88 (1993)

Three-Dimensional Finite Element Analysis of Transient Heat Conduction and Measured Temperature in Massive Concrete Pier

Hidehiko OGATA*, Masato KUNITAKE** and Takao NAKAZAWA***

*The Graduate School of Agriculture, Miyazaki University
**Faculty of Agriculture, Miyazaki University
***Faculty of Engineering, Miyazaki University

Abstract

　Among some factors that greatly influence the results of mass concrete temperature analysis, there is an important factor in the characteristic curve of adiabatic temperature rise, the formula of which comprises two constants as follows ; K means the ultimate adiabatic temperature rise ; and α the constant pertaining to the rate of temperature rise. The above factor computed by the finite element method using those constants available from "Practices for control of cracking in mass concrete" (by Japan Concrete Institute) tends to be 20-30% less than the value of measurement. This paper describes how measurements of the temperature in a massive concrete pier were made, and the values of K and α are obtained by the inverse analysis. The result has showed that the constants multiplied by 1.3 are in good agreement with the ones from measurement. Further, the time-temperature curves and contour lines of temperature are drawn by the simulation of the initial temperature in the mass concrete.