TRANSACTIONS OF THE JAPANESE SOCIETY OF IRRIGATION, DRAINAGE AND RECLAMATION ENGINEERING, Volume 184, Page 137-144 (1996)

A Study on the Adiabatic Temperature Rise Constant in a Real Concrete Structures

Yoshiyuki NOGI*, Hidehiko OGATA**, Hideki BABA***, Masato KUNITAKE****, Fumiyoshi KONDO****, Hiroshi YAMASHITA***** and Takao NAKAZAWA******

* Graduate School of Agriculture, Miyazaki University
** The United Graduate School of Agricultural Sciences, Kagoshima University and
Research Fellow of the Japan Society for the Promotion of Science
*** Baba Landscape Gardening
**** Faculty of Agriculture, Miyazaki University
***** Department of Agriculture, Miyazaki Prefecture
****** Faculty of Engineering, Miyazaki University

Abstract

　Among researches which have been performed in order to analyze the temperature distribution in a concrete structure more accurately, there are numerous ones particularly concerning internal heating in concrete. Of these researches, when analyzing with the adiabatic temperature rise constant (K : the ultimate adiabatic temperature rise, α : the constant pertaining to the rate of temperature rise) being constant within the analysis structure, the analysis temperature may be greatly different from the observed temperature particularly near the surface of the member in some cases. However, the difference in the adiabatic temperature rise constant at various member positions within an actual concrete structure has not been specifically shown.
　Thus, on the basis of the temperature measured results at various member positions obtained by the experiments performed in the actual massive concrete pier and concrete box culvert, this paper performed inverse analysis of the adiabatic temperature rise constant optimal for approximation of an observed value for consideration.
　As a result, it could be specifically described by using the inverse analysis results that the adiabatic temperature rise constant differs depending on various member positions in a concrete structure. Also, it was found out that the adiabatic temperature rise constant is substantially the same at member positions in the similar ambient environmental state.