Optimum control method and system for temperature drop rate of lining concrete

Abstract

The invention provides an optimization control method and system for the temperature drop rate of concrete, which can quickly and accurately calculate and obtain the optimal control temperature drop rate, and based on this, conduct water cooling to the lining concrete, and scientifically and rationally realize temperature control and anti-cracking. The method for optimizing the temperature drop rate of lining concrete provided by the present invention is characterized in that it comprises the following steps: Step 1. Obtaining the data for temperature control of lining concrete through water cooling; Step 2. Calculating the temperature drop rate V of optimal control of lining concrete through water cooling y =0.86H+0.14C‑0.03HC‑0.13H 2 ‑1.95, where: H is the thickness of the lining concrete; C is the 90d design age strength grade of the lining concrete; Step 3. Optimizing the temperature drop rate V according to water cooling y Optimize the water cooling measures for lining concrete.

Description

technical field [0001] The invention belongs to the technical field of concrete temperature control and anti-cracking, and in particular relates to a method and system for optimizing the temperature drop rate of lining concrete. Background technique [0002] Buried cooling water pipes for water cooling to reduce the maximum temperature of concrete and control the temperature difference between inside and outside. Since the first use of concrete for the lining of the diversion tunnel of the underground power station on the right bank of the Three Gorges Water Conservancy Project, it has been widely used in the lining of hydraulic tunnels in Xiluodu, Baihetan, Wudongde and other giant hydropower stations. , and succeed. However, there are no regulations on the control of the temperature drop rate of the lining concrete through water cooling in the relevant codes and regulations of hydraulic tunnels. It is often referred to the design specifications of concrete gravity dams or...

AI Technical Summary

Problems solved by technology

Therefore, for the water cooling of thin-walled lining structure concrete, on the one hand, can a faster temperature drop rate be allowed, and on the other hand, what temperature drop rate is more beneficial to temperature control and crack prevention? Moreover, the thickness of the lining structure is different and the strength of the concrete is not equal. The temperature drop rate of the optimal control of water cooling may be quite different. However, there is currently no method for accurately calculating the temperature drop rate of the optimal control of water cooling according to the concrete condition of the lining structure.

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