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任意压力区间压缩模量Es计算APP ——基于土工试验数据 p-lnh 的三次样条插值

Calculation APP of Compression Modulus Es in Any Pressure Interval — Cubic Spline Interpolation Based p-lnh on Soil Test Data

Advance in Civil Engineering / 2021,3(4): 88-98 / 2021-10-18 532 583

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• Authors: 刘大海     
• Information:

  1．深圳市地质局，深圳；
  2．深圳地质建设工程公司，深圳

• Keywords: 压缩模量；切线压缩模量；割线压缩模量；三次样条函数；安卓系统；APP
• Compression modulus; Tangent compression modulus; Secant compression modulus; Cubic spline function; Android system; APP
• Abstract: 压缩模量Es 是土的物理力学指标之一，也是地基沉降计算的重要指标。传统的方法是给出e-p 曲线图进行人工查取［p1，p2］及［e1，e2］，然后计算压缩系数av=-Δe/Δp，再计算压缩模量Esv=（1+e0）/av。本文利用实验数据（p，ln（h））建立三次样条函数。在此基础上，以安卓系统MFP 语言为工具，编制了APP 程序，实现了在移动手机上计算任意点的切线压缩模量Es 及任意 区间的割线压缩模量Esv。
• Compression modulus Es is one of the physical and mechanical indexes of soil, and it is also an important index for foundation settlement calculation. The traditional method is to give the curve e-p for manual search [p1, p2] and[e1, e2], then calculate the compression coefficient av=-Δe/Δp, and then calculate the compression modulus Esv=(1+e0)/av. In this paper, cubic spline function is established by using experimental data (p, ln(h)). On this basis, the APP program is compiled with Android MFP language as a tool to calculate the tangent compression modulus Es of any point and secant compression modulus Esv of any interval on the mobile phone.
• DOI: https://doi.org/10.35534/ace.0304017
• Cite: 刘大海．任意压力区间压缩模量Es 计算APP——基于土工试验数据p-lnh 的三次样条插值［J］．土木工程进展，2021，3（4）：88-98．