Ideal temperature control curve model of concrete dam and intelligent control method utilizing same

Abstract

The invention discloses an ideal temperature control curve model of a concrete dam. A finite element simulation analysis method is utilized, the distribution rule of the various dam types of temperature field and thermal stress is researched based on the existing specifications and temperature control practical experience, and the ideal temperature control curve model of concrete which is poured in different portions, different material partitions and different seasons is obtained through simulation calculation, wherein the temperature stress of the ideal temperature control curve model is minimum under the condition of the same temperature control standard. In addition, the invention also provides an intelligent control method utilizing the ideal temperature control curve model of the concrete dam.

Description

technical field [0001] The invention belongs to the technical field of concrete structure monitoring and construction in water conservancy and hydropower projects, in particular relates to a concrete dam ideal temperature control curve model, and also provides an intelligent control method using the model. Background technique [0002] The crack problem in the dam concrete construction period is one of the problems that have not been effectively solved. The main reason is that in addition to the complex site construction conditions in the construction stage, the implementation of many temperature control measures during the construction process is inevitably interfered by human factors. Another important reason is that its actual anti-cracking effect cannot reach the expected effect. Many concrete dams with cracks are due to the failure of the internal temperature to cool or protect the surface according to the design requirements, so that the anti-cracking safety reserve of...

AI Technical Summary

Problems solved by technology

[0002] The crack problem in the dam concrete construction period is one of the problems that have not been effectively solved. The main reason is that in addition to the complex site construction conditions in the construction stage, the implementation of many temperature control measures during the construction process is inevitably interfered by human factors. Another important reason is that its actual anti-cracking effect cannot reach the expected effect.

Many concrete dams with cracks are due to the failure of the internal temperature to cool or protect the surface according to the design requirements, so that the anti-crack safety reserve of the dam concrete during the construction period is insufficient, and the stress exceeds the standard, resulting in cracks

[0003] In previous engineering practice, the control of water pipe cooling was mainly done manually. Whether the water flow control is good or bad depends entirely on the experience of the on-site management personnel. Because there are often hundreds of water pipes passing through the dam at the same time. , relying only on manual methods to deal with so many water pipeline controls, the result is that it is difficult to avoid the situation that there are many human errors and the temperature drop process deviates from the design guide curve. This traditional water control management mode brings the greatest The problem is that the cost of water supply is high, the process of temperature drop is random, and the risk of cracking is often in an uncontrolled state

Images