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土木工程进展

Advance in Civil Engineering

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土工固结试验压缩模量Es的三次样条插值——基于p-s试验数据的Excel VBA开发

The Cubic Spline Interpolation of Compression Modulus Es of Geotechnical Consolidation Test --Excel VBA Development Based on p-s Test Data

土木工程进展 / 2022,4(4):58-67 / 2022-11-04 look672 look653
  • 作者: 刘大海¹²      陈永红²      张萧²      曾庆桂²     
  • 单位:
    1.深圳市地质局,深圳; 
    2.深圳地质建设工程公司,深圳
  • 关键词: 压缩模量;切线压缩模量;割线压缩模量;三次样条函数;Excel VBA;
  • The Cubic Spline Interpolation of Compression Modulus Es of Geotechnical Consolidation Test —Excel VBA Development Based on p-s Test Data
  • 摘要: 压缩模量Es是土的物理力学指标之一。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=-Δ e/Δ p ,再计算压缩模 量Esv =(1+ e 0)/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 Excel VBA 为工具,编制了Es宏,实现了在PC机上计算任意点的切线压缩模量Est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. 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, using Excel VBA as a tool, an Es macro is compiled to calculate the tangent compression modulus Es of any point and secant compression modulus Es v of any interval on a PC.
  • DOI: https://doi.org/10.35534/ace.0404007
  • 引用: :刘大海,陈永红,张萧,等.土工固结试验压缩模量Es的三次样条插值——基于p-s试验数据的Excel VBA开发[J].土木工程进展,2022,4(4):58-67. 
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