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在实际工程中,双曲拱坝的拱冠梁上下游面,多采用二次抛物线或园弧曲线。文献只给出了一种典型的坝面曲线坐标和坝体厚度尺寸,文献建议拱冠梁的坝面为园弧曲线,但都没有给出相应的方程式,在需要修改坝面曲线形状,计算坝体厚度时感到很不方便,研究坝面曲线与应力的规律性也不好表达。本文将导出:①等厚园拱双曲拱坝坝面曲线的通用方程式和计算坝体厚度的公式;②坝面为园弧曲线的半径尺寸和计算坝体厚度的公式。
In the actual project, the upper and lower surfaces of arch beam of double-curvature arch dam mostly use quadratic parabola or arc curve. The literature only gives a typical curve curve of dam surface and the thickness of the dam. According to the literature, it is suggested that the dam surface with arch and crown beam is a circular arc curve, but no corresponding equation is given. When the curve shape of dam surface needs to be modified, When the thickness of the dam is very inconvenient to study the curve of the dam and the law of the stress is not good expression. In this paper, we derive: ①Generic equation of the curve of the isometric thick arch dam and the formula for calculating the thickness of the dam; ②The surface of the dam is the radius of the arc curve and the formula for calculating the thickness of the dam.