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Lining concrete temperature drop rate optimization control method and system

An optimized control and rate reduction technology, applied in design optimization/simulation, special data processing applications, computer-aided design, etc., can solve problems such as uncalculated water cooling, to ensure the effect of temperature control and anti-cracking, strong scientific , Good temperature control and anti-cracking effect

Active Publication Date: 2021-07-30
WUCHANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Lining concrete temperature drop rate optimization control method and system
  • Lining concrete temperature drop rate optimization control method and system
  • Lining concrete temperature drop rate optimization control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 3 # Calculation of Optimal Temperature Drop Rate for Concrete Water Cooling Control in No.1 Warehouse Roof Arch Lining in No-pressure Section

[0060] 3 # The first storehouse of the unpressurized section of the tunnel, the gate-shaped lining, the thickness of the side wall lining is 0.8m, and the circumferential construction joints are set every 9m along the axis of the flood discharge tunnel, the surrounding rock is class II, and the bottom plate and side wall of the lining structure are C 90 40 Concrete, top arch C 90 30W8F150 concrete, such as Figure 5 shown. The concrete is poured in two phases: first the side arch, and then the floor. Will be poured in May. Here we introduce the calculation of the optimal temperature drop rate for side-roof arch lining concrete pouring water cooling control. The basic temperature control information is the same as above. Use normal temperature tap water for moisturizing and curing for 28 days, and water cooling to control...

Embodiment 2

[0071] 3 # Calculation of Optimal Temperature Drop Rate for Concrete Lining of Side Wall of No.22 Warehouse in No-pressure Section of Cavern by Water Cooling Control

[0072] 3 # The 22nd storehouse in the unpressurized section of the tunnel, the gate-shaped lining, the thickness of the side wall lining is 1.5m, and the circumferential construction joints are set every 9m along the axis of the flood discharge tunnel. 90 40 Concrete, top arch C 90 30W8F150, such as Figure 7 shown. The concrete is poured in two phases: first the side arch, and then the floor. Will be poured in September. Here we introduce the calculation of the optimal temperature drop rate for side-roof arch lining concrete pouring water cooling control. The basic temperature control information is the same as above. Use normal temperature tap water for moisturizing and curing for 28 days, and water cooling to control the internal temperature of the concrete.

[0073] like figure 2 As shown, the opti...

Embodiment 3

[0084] Optimal control system for temperature drop rate of lining concrete

[0085] This embodiment provides a system capable of automatically implementing the above method for optimal control of the temperature drop rate of lining concrete. The system includes: an input display unit, a storage unit, a calculation unit, a water cooling unit, and a control unit.

[0086] The input and display part is used for allowing the operator to input the collected data for temperature control of lining concrete through water cooling according to the prompt, and can perform corresponding display according to the operation instruction input by the operator. For example, the input and display unit can optimize the temperature drop rate V calculated by the calculation unit for cooling through water according to the operation instruction. y The display can also display the water cooling measures performed by the water cooling unit according to the operation instructions.

[0087] The storage...

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Abstract

According to the lining concrete temperature drop rate optimal control method and system, the optimal control temperature drop rate can be calculated quickly and accurately, water cooling is conducted on lining concrete based on the optimal control temperature drop rate, and temperature control and cracking prevention are achieved scientifically and reasonably. The invention provides a lining concrete temperature drop rate optimization control method which is characterized by comprising the following steps: step 1, acquiring lining concrete water cooling temperature control data; step 2, calculating a lining concrete water cooling optimization control temperature drop rate Vy=0.86 H + 0.14 C-0.03 HC-0.13 H2-1.95, wherein H is the thickness of the lining concrete; c is the 90d design age strength grade of the lining concrete; and step 3, optimizing a lining concrete water cooling measure according to the water cooling optimization control temperature drop rate Vy.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/08
CPCG06F30/23G06F2119/08
Inventor 段亚辉杜洪艳段次祎王雷苗婷
Owner WUCHANG UNIV OF TECH
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