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Temperature-control anti-cracking method used for concrete arch dam

A temperature-controlled anti-cracking and concrete technology, applied in arch dams, dams, buildings, etc., can solve problems such as poor anti-cracking effect, achieve improved temperature control and anti-cracking effect, accurate height range, and reduce stress and temperature gradient The effect of the control

Active Publication Date: 2016-01-27
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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Problems solved by technology

However, for the same cold area, only the existing temperature control measures are used to prevent cracking by water cooling, which is not effective for rapid construction of arch dams.

Method used

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  • Temperature-control anti-cracking method used for concrete arch dam
  • Temperature-control anti-cracking method used for concrete arch dam
  • Temperature-control anti-cracking method used for concrete arch dam

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, the present invention is based on the temperature control monitoring analysis results and the finite element stress calculation results in the construction process of the arch dam concrete. At first, according to the temperature tracking monitoring analysis and finite element stress calculation of the arch dam concrete, the temperature of the arch dam is studied. Field and stress field, and then through the sensitivity analysis of the effect of the five construction elements; Among them, the temperature control monitoring analysis results include concrete temperature monitoring data, water cooling monitoring data and thermal insulation maintenance measurement monitoring data; temperature control detection, through Embed a special thermometer inside the concrete of the arch dam, connect it with an optical fiber, extend the optical fiber...

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Abstract

The invention discloses a temperature-control anti-cracking method used for a concrete arch dam with a good anti-cracking effect. The temperature-control anti-cracking method used for the concrete arch dam comprises synchronous-cooling area temperature control and synchronous-cooling area height range control which are synchronously carried out. A finite element method is adopted to carry out numerical calculation and optimized analysis on five factors of a water pipe cooling process, construction progress, cantilever height, seasonal temperature change and a constraint condition, so that temperature real-time control adaptive to the synchronous-cooling area height is realized, and the anti-cracking effect of the concrete arch damis relatively good.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, and in particular relates to a temperature control and crack prevention method for concrete arch dams. Background technique [0002] Water cooling is the most important temperature control measure in the construction of arch dams, that is, the temperature difference between the foundation, the inside and outside, and the upper and lower layers of the arch dam can be adjusted by reducing the internal temperature of the concrete. However, for high arch dams, the construction period is longer, and the temperature gradient along the elevation direction of the dam body is a more realistic threat, and it is one of the important factors that induce penetrating cracks. [0003] In the practice of arch dam construction in my country, the arch dam is usually divided into five areas: the filled area, the grouted area, the same cooling area, the transition area, and the heavy cover...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/12E02D15/02
Inventor 井向阳潘燕芳黎满林邵敬东刘俊
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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