Method for determining construction and curing methods for mass concrete structures

Abstract

The invention provides a method for determining construction and curing methods for mass concrete structures. The method includes the steps that the structure temperature field computational analysis is performed on the mass concrete structures, and a thermal model is transformed to a structural model according to an analysis result so as to perform temperature stress field analysis to obtain a structure temperature stress field; structure temperature stress is compared with allowed tensile strength of concrete in the corresponding age, and a specific curing mode and corresponding technical indexes or an optimal structure form are adjusted and determined according to a comparison result; temperature control monitoring indexes of concrete curing are determined according to the corresponding temperature states of the structure temperature stress field; and a specific implementation mode of structure crack resistance and a concrete construction and curing monitoring scheme are determined according to the temperature stress states. By means of the method for determining the construction and curing methods for the mass concrete structures, the specific cutting mode, technical indexes and monitoring indexes can be determined according to the specific actual conditions of mass concrete structure pouring, the construction quality of the concrete structures are effectively guaranteed, and the risks of concrete cracking are greatly prevented.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a method for determining a construction and maintenance method for a large-volume concrete structure. Background technique [0002] The construction quality requirements of concrete are closely related to the use of the structure. In the past, buildings with strict quality requirements for concrete construction were usually poured multiple times by reducing the pouring volume, such as the M310 nuclear power reactor plant imported from France by my country. The raft foundation of the shielding structure has always adopted a layered and segmented pouring mode in the past. Now, with the vigorous development of nuclear power construction, the need to reduce the construction period and the improvement of the existing construction capacity, it is imperative to pour large-scale concrete as a whole . It is obvious that under the premise of ensuring that the construction quality ...

AI Technical Summary

Problems solved by technology

The above-mentioned method has the advantages of being simple and easy to operate, and has low technical requirements for engineering personnel, but its shortcomings are also very obvious, mainly manifested in the following aspects: firstly, the determination of maintenance technical indicators and measures is mostly empirical, and the maintenance technical indicators are relatively single, lacking Individual differences in physical projects make it impossible to obtain differentiated maintenance methods; secondly, monitoring indicators are mainly empirical and lack pertinence, which cannot reflect the differences in specific projects; thirdly, there is no way to provide specific quantitative design for structural constraints; In addition, the influence of the geometric type of the integral pouring structure on the construction temperature stress cannot be considered, the construction quality of the concrete is difficult to guarantee, and the concrete structure still has the risk of cracking

Images