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An all-climate thermal analysis method for bridges in South China

A South China, all-climate technology, applied in the direction of climate sustainability, design optimization/simulation, calculation, etc., can solve problems such as lack of research

Active Publication Date: 2021-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, a large number of studies focus on temperature extremes, but there is almost no research on the real-time and continuous analysis of the whole climate in the daily use phase.

Method used

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  • An all-climate thermal analysis method for bridges in South China
  • An all-climate thermal analysis method for bridges in South China
  • An all-climate thermal analysis method for bridges in South China

Examples

Experimental program
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Effect test

Embodiment

[0025] In this embodiment, on-site measured data and calculation analysis show that the bridge structure in the atmospheric environment is a transient heat transfer structure, so the analysis of the temperature effect of the bridge needs to be analyzed according to the transient heat transfer problem.

[0026] Such as figure 1 Described is a flow chart of an all-climate thermal analysis method for bridges in South China, and the specific steps include:

[0027] (1) Collect solar radiation and other relevant meteorological parameters;

[0028] (2) Select the number of days for bridge thermal analysis and the calculation step of bridge thermal analysis for a certain day according to the calculation requirements;

[0029] (3) By invoking the established illuminance-solar direct radiation correction coefficient model, illuminance-solar radiation correction coefficient model, cloud coverage-solar direct radiation correction coefficient model, and cloud coverage-solar radiation cor...

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Abstract

The invention discloses an all-climate thermal analysis method for bridges in South China, which includes: (1) selecting the number of days for thermal analysis of the bridge; The illuminance-direct solar radiation correction coefficient model, the illuminance-solar radiation correction coefficient model, the cloud coverage rate-solar direct radiation correction coefficient model and the cloud coverage rate-solar radiation correction coefficient model are established to determine the environment of bridges in South China. Radiation; (4) Determine the calculation method of thermal boundary conditions on each surface of the bridge under various weather conditions, and determine the trigger and conversion mechanism of the calculation method under different weather conditions; (5) Realize the full climate temperature of the bridge by using programming calculation and data interaction Continuous numerical calculations for analysis. The invention can cover various climate conditions, and provides a basis for realizing the full-climate, real-time and long-term analysis of the temperature effect of the bridge structure.

Description

technical field [0001] The invention relates to the field of health monitoring of civil engineering bridge structures, in particular to an all-climate thermal analysis method for bridges in South China. Background technique [0002] The bridge is an important infrastructure, and the long-term overload and harsh service environment make the bridge structure seriously damaged and accidents occur frequently. Temperature is one of the main environmental factors that have adverse effects on bridges. It will degrade the structural performance of bridges, reduce the bearing capacity, and fail to guarantee safety. Coupled with other external loads, it is easy to induce major collapse accidents. [0003] The temperature in South China is relatively high throughout the year, and the intensity of solar radiation is high, especially in summer and autumn. Therefore, the adverse effect of temperature on bridges is more serious than in other areas. The analysis of bridge thermal effects ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/23G06F119/08
CPCG06F30/20G06F2119/08Y02A90/10
Inventor 周林仁陈兰梁春芳伍勇
Owner SOUTH CHINA UNIV OF TECH
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