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一、现有的校核方法及存在問題 目前在校核隧道衬砌計算結果的精确度时,是按拱顶截面的相对位移是否为零的公式进行,即: ∑(M△S)/(EJ)+β_0=0 (1) ∑(My△S)/(EJ)+fβ_0+y_0=0 (2) 由于計算过程中存在着各种誤差,上两式常常不能满足,而实际为: ∑(M△S)/(EJ)+β_0=△_β (3) ∑(My△S)/(EJ)+fβ_0+y_0=△_y (4) 式中的△_β及△_y可称为拱顶截面轉动及水平移动的絕对閉合差。計算結果的精确度则用相对閉合差δβ及δy来判别,即:
First, the existing calibration methods and existing problems in the verification of the accuracy of the tunnel lining calculation results, according to the relative displacement of the vault section is zero formula, namely: ∑(M△S)/(EJ )+β_0=0 (1) ∑(MyΔS)/(EJ)+fβ_0+y_0=0 (2) Since there are various errors in the calculation process, the above two formulas often cannot be satisfied, and the actual result is: MΔS)/(EJ)+β_0=△_β (3) ∑(MyΔS)/(EJ)+fβ_0+y_0=Δ_y (4) △_β and △_y in the formula may be referred to as vault cross sections. Absolute closeness of rotation and horizontal movement. The accuracy of the calculation result is judged by the relative closing difference δβ and δy, that is: