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混凝土结构长期暴露在气象环境中,受各种气象因素的影响。湿度影响混凝土结构的耐久性和材料的干燥收缩,目前基于原始湿度数据的研究极少。该文以广州地区为例,阐述了一种由30年原始气象数据得到逐时气象数据的快速高效插值方法,引入平稳二项随机过程模型。对逐时湿度气象数据进行概率统计,提出并求出50年一遇混凝土结构用标准日湿度作用模型,进而得到标准年湿度作用模型。湿度作用模型反映湿度日(年)变化规律,并为有关日(年)湿度作用分析提供连续数值模拟参数,供有关湿度对结构耐久性和干燥收缩影响分析参考。
Long-term exposure to concrete structures in the meteorological environment, by a variety of meteorological factors. Humidity affects the durability of concrete structures and the drying shrinkage of the material, and few studies have so far been based on raw moisture data. Taking Guangzhou as an example, this paper expounds a fast and efficient interpolation method of hourly weather data from 30 years of original meteorological data, and introduces a stationary binomial stochastic process model. Based on the probability statistics of the hourly humidity meteorological data, a standard daily wetness model for 50-year-old concrete structures was proposed and obtained. The humidity effect model reflects the variation law of humidity (year), and provides continuous numerical simulation parameters for the analysis of relative humidity (day). It can be used as a reference for analyzing the influence of humidity on the durability and drying shrinkage of the structure.