Multi-region boundary element analysis of unconfined seepage problems in excavations

Chih-Ping Wu, Chih Hsien Lin, Yaw Jeng Chiou

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A multi-region boundary element method (BEM) is presented for the seepage analysis in deep excavations. In the formulation, soil foundation is regarded as a multilayered porous medium possessing the zoned inhomogeneous hydraulic conductivity. Based on Darcy's law, a two-dimensional steady state differential equation with transient free surface conditions is adopted. With a fundamental solution of the potential problem, a generalized multi-region boundary element method is developed. The transient boundary conditions are treated by means of the Galerkin scheme of the θ family approximation and are imposed into the boundary integral formulation. The essential features of the BEM are that it concerns the zoned inhomogeneous hydraulic conductivity of soil media, and that the assembly of each individual region can process in the same way as in finite element method (FEM) with much less computer memory storage. Several unconfined seepage problems are solved to demonstrate the performance of the multi-region BEM.

Original languageEnglish
Pages (from-to)75-96
Number of pages22
JournalComputers and Geotechnics
Volume19
Issue number2
DOIs
Publication statusPublished - 1996 Jan 1

Fingerprint

boundary element method
Seepage
Boundary element method
Excavation
seepage
excavation
Hydraulic conductivity
hydraulic conductivity
Soils
Darcy law
finite element method
Porous materials
porous medium
Differential equations
boundary condition
soil
Boundary conditions
Finite element method
Data storage equipment
analysis

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

Cite this

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Multi-region boundary element analysis of unconfined seepage problems in excavations. / Wu, Chih-Ping; Lin, Chih Hsien; Chiou, Yaw Jeng.

In: Computers and Geotechnics, Vol. 19, No. 2, 01.01.1996, p. 75-96.

Research output: Contribution to journalArticle

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