Dynamic early warning method of concrete poured storehouse temperature double-control index

A technology of concrete and indicators, applied in construction, infrastructure engineering, etc.

Inactive Publication Date: 2013-05-29
CHINA THREE GORGES CORPORATION +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For the early warning method of dual control indicators for the temperature of the super-high arch dam concrete pouring silo during the construction period, no research at home and abroad has involved it so far.

Method used

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  • Dynamic early warning method of concrete poured storehouse temperature double-control index
  • Dynamic early warning method of concrete poured storehouse temperature double-control index
  • Dynamic early warning method of concrete poured storehouse temperature double-control index

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Embodiment Construction

[0096] Taking a certain extra-high arch dam in the experiment as an example, the control method of the present invention is introduced in detail. The extra-high arch dam is a concrete double-curved arch dam with a crest elevation of 610 meters and a maximum dam height of 285.5 meters. Distributed optical fibers are buried in typical dam sections for temperature monitoring. Due to the large scale of the arch dam and the average crack resistance of concrete materials, in order to improve the safety of concrete crack resistance during the construction period, the maximum temperature of concrete was uniformly controlled at 27°C. In order to prevent the maximum temperature of the concrete pouring silo from being too low and affecting the normal development of the early material properties of the concrete, the maximum temperature of the concrete pouring silo should not be lower than 23°C.

[0097] According to the stress and deformation characteristics of the extra-high arch dam, t...

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Abstract

The invention provides a dynamic early warning method of a concrete poured storehouse temperature double-control index and relates to the dynamic early warning method which early warns temperature and temperature change rate in the first temperature control stage of an arched concrete dam poured storehouse in a dynamic mode by utilizing a probabilistic method to conduct solution and instruction and by matching with a practical construction requirement. According to the dynamic early warning method of the concrete poured storehouse temperature double-control index, personality characteristics of self-thermology-parameters of concrete poured blocks of different dam sections, different partitions and different seasons are further considered on the basis of the prior art, dynamic early warning of the temperature double-control index in the first temperature control stage of the ultra-high arched dam concrete poured blocks is achieved through the probability statistic method and a four-stage early warning mechanism. The dynamic early warning method of the concrete poured storehouse temperature double-control index is in favor of the control of the maximum temperature of the concrete, improves temperature stress and strengthens temperature control and crack prevention capacity of the dam.

Description

technical field [0001] The invention relates to a temperature control method for concrete pouring blocks in a hydraulic structure, in particular to a temperature control method for the first-stage temperature control stage of a large-volume concrete pouring bin with a clear temperature control index in an extra-high arch dam. Background technique [0002] At present, in the southwestern region of my country, many 300m-level super-high concrete arch dams are being constructed vigorously, which has also brought many new problems that need to be solved urgently. Among them, temperature control during the construction period has become one of the key issues in the construction of ultra-high arch dams. [0003] For extra-high arch dams, the focus of crack prevention is not limited to the strong confinement area, but the entire dam body. The scale of the ultra-high arch dam is huge, and the crack resistance of concrete materials fluctuates greatly. In order to improve the safety ...

Claims

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Application Information

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IPC IPC(8): E02D15/00
Inventor 周绍武黄耀英林鹏
Owner CHINA THREE GORGES CORPORATION
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