Prediction method for number of freeze-thaw actions in actual environment

Abstract

The present invention discloses a prediction method for the number of freeze-thaw actions in an actual environment. The method comprises: performing statistical analysis on the number of positive / negative transitions of daily maximum temperature and daily minimum temperature in temperature data of an area, to obtain the number of times of freeze-thaw actions in an actual environment of the area; and then establishing a prediction model of the number of freeze-thaw actions based on Mann-Kendall test, Morlet wavelet analysis and an R / S analysis method, wherein Mann-Kendall trend test reflects a long-term trend of the change of the number of freeze-thaw actions over time, the wavelet analysis reveals a periodical change of freeze-thaw actions, and the R / S analysis reflects irregularity of a future trend and provides a basis for prediction of the number of future freeze-thaw actions. By adopting the prediction method for the number of freeze-thaw actions in an actual environment in the research, the trends of the number of freeze-thaw actions in a certain area over time and in the future can be analyzed. Therefore, the prediction method can provide a reference infrastructure construction, service life prediction, maintenance and repairing and so on for civil engineering affected by freeze-thaw actions.

Description

Technical field: [0001] The invention belongs to a method for predicting the times of freezing and thawing actions, in particular to a method for predicting the times of freezing and thawing actions in an actual environment. Background technique: [0002] Climatic and environmental conditions have a significant impact on the stability, durability, and performance of civil engineering infrastructure. For highway projects with linear characteristics, the impact of climatic environment is particularly significant. The impact of climate and environment on civil engineering infrastructure is relatively indirect, subtle, highly variable, and intertwined with loads, so it is very difficult to quantitatively separate the impact of environmental factors. [0003] Freezing and thawing is the combined effect of temperature and moisture. It refers to a physical effect and phenomenon of freezing and thawing due to the temperature dropping below zero and rising above zero. Freezing and th...

AI Technical Summary

Problems solved by technology

[0007] Due to the fact that the freezing and thawing of the actual environment is affected by the climate and environmental conditions, the changes are extremely complex, and there are few reports on the prediction of the number of freezing and thawing in the actual environment, which makes the quantification of the freezing and thawing in the actual environment difficult.

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