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考虑超孔压随深度变化一维固结计算式的推导

张松岩 吉晓朋

路基工程Issue(2):102-104,3.
路基工程Issue(2):102-104,3.

考虑超孔压随深度变化一维固结计算式的推导

Derivation of One-dimensional Consolidation Formula Considering Changes of Excess Pore Pressure along Vertical Profile

张松岩 1吉晓朋2

作者信息

  • 1. 中铁二院工程集团有限责任公司,成都,610031
  • 2. 中航勘察设计研究院有限公司,北京,100098
  • 折叠

摘要

Abstract

For saturated foundation with deep clay, additional stress along compression layer caused by subgrade load approximately decays in irregular curve.In order to further improve the accuracy of consolidation calculation, based on Ter aghi theory of one-dimensional consolidation, pore pressure formula in which the nonlinear change of initial excess pore pressure along vertical profile is taken into account, is derived in this paper.The convergence rate of the formula is discussed.Through certain simplification on the basis of ensuring accuracy, an equation of average consolidation degree of the whole compression layer is obtained.

关键词

路基/一维固结/初始超孔压/平均固结度/计算式

Key words

subgrade/ one-dimensional consolidation/ initial excess pore pressure/ average consolidation degree/ formula

分类

建筑与水利

引用本文复制引用

张松岩,吉晓朋..考虑超孔压随深度变化一维固结计算式的推导[J].路基工程,2011,(2):102-104,3.

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