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九甸峡水利枢纽工程调压井位于厂房后高边坡上,阻抗圆筒式结构,井身总高91 m,其中出露地面以上部分高度为31 m,井身内径22 m,衬砌厚度2 m。结合调压井的地形地质条件和运行要求,按照严格控制裂缝宽度的设计原则,采用Ansys软件对调压井后张预应力结构进行了详细的分析计算,确定了预应力锚索施加的范围、吨位、钢绞线布置的位置等,并进行了三维仿真分析计算。
The surge shaft of the Jiudianxia Water Conservancy Project is located on the high slope behind the plant and has an impedance cylindrical structure with a total well height of 91 m, of which the height above the ground is 31 m, the inner diameter of the well body is 22 m and the lining thickness is 2 m. According to the topographic and geological conditions and operation requirements of surge shaft, according to the design principle of strictly controlling the crack width, the post-tensioning structure of surge shaft is analyzed and calculated by Ansys software in detail, the scope of prestressed anchor cable application is determined, Tonnage, the location of strand arrangement, etc., and conducted a three-dimensional simulation analysis and calculation.