Research to determine the optimized position of splitting layer of mass concrete structure constructed by method of continuous placement combined layer splitting placement different exothermic

Abstract

In order to solve the problem of thermal cracking control in large-volume concrete which is constructed by continuous pouring method in combination with dividing the pour layer with different heat distribution, the determination of the thickness of the pouring layer plays an important role. Construction structure is divided into two layers with different heat distribution, lower layer (layer with low heat distribution) and upper layer (layer with high heat distribution). This article is mainly to study the influence of the upper layer thickness on the temperature field and to evaluate the cracks in concrete blocks by using the finite element method with the support of Midas Civil software. The finite element method is used to simulate the temperature field analysis in early-age bulk concrete. From the results of the temperature field, it is concluded that appropriate layer thickness should be used to reduce the temperature and control premature cracking of concrete. Research results are applied to provide references for large-volume concrete works such as dams, transfer beams, piers, bridge foundations and other structures of similar scale.