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本文介绍一种基于拱坝壳体理论的近似分析法。通过简化拱坝壳体理论的基本方程,可把拱坝的分析归结为变系数常微分方程W~′′′+(2K′)/(K)W′′′+(A)/(K)W~′′-(B)/(K)W′+(C)/(K)W+Z/K=0的积分问题。建议用差分法进行近似积分。考虑了表面力(水压力)和温度变化二种荷载,进行了实例计算.经与较精确的解荅比较,证明用建议的方法分析对称或基本上对称的拱坝,此较简便,并可获得满意的结果。
This article describes an approximate analysis method based on the arch dam shell theory. By simplifying the basic equation of the arch dam shell theory, the arch dam analysis can be reduced to a variable coefficient ordinary differential equation W~′′′+(2K′)/(K)W′′′+(A)/(K) Integration of W~"-(B)/(K)W’+(C)/(K)W+Z/K=0. It is recommended to use the difference method for approximate integration. Taking into account the surface forces (water pressure) and temperature changes in the two loads, an example calculation was performed. After comparison with a more accurate solution, it was proved that using the proposed method to analyze symmetrical or substantially symmetrical arch dams is relatively simple and Get satisfactory results.