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指数法计算公式如下:
其中:
δmax
-
最大沉降量
sw
变形结构和原始未变形结构构成区域的面积
x0
沉降的水平范围
δ(x)
沉降的水平范围x0内距离支护结构x处沉降量
x
计算点到支护结构边缘的距离
注意: 沉降的水平范围 x0 计算方法与三角形法相同。