Research On Mass Concrete Temperature Field, Stress Field And The Temperature Control Measures

The mass concrete has been applied in various fields of civil engineering. But, in mass concrete pouring construction process, the heat of hydration of cement will produce a lot, such concrete internal accumulation of heat temperature is high, produce compressive stress; Outside due to air circulation, low temperature, tensile stress; it is easy to cause the concrete began to crack. So, It is critical to control mass concrete temperature cracks.Our specification of mass concrete in only gives a convenient solution of empirical formula, but gives the empirical formula of ignoring the temperature field of continuous change and the influence of ambient temperature changing and other factors. Therefore, in accordance with the specification given method calculated the temperature and stress with the actual conditions vary widely. Many experts and scholars have devoted to the study of large volume concrete solution.This paper, from the two most widely the temperature field method (that is, the finite difference method and finite element method).First of all, starting from the construction of mass concrete, combined with the foundation of a high-rise building, based on the calculation of finite difference method, and the calculated results effective illustrates the finite difference method is effective;Then, from a water conservancy project, combined with a mass concrete of bridge pier, using ANSYS finite element software for the whole casting process analysis, it turns out that this method provides the certain guiding role.At the end of the paper puts forward some concrete technical measures of mass concrete temperature control, and studied the measures. Therefore, in the process of mass concrete casting, this paper is of great significance.