Numerical manifold method for simulation of excavation unloading in geotechnical engineering

ZHU Ai-jun; DENG An-fu; ZENG Xiang-yong

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Numerical manifold method for simulation of excavation unloading in geotechnical engineering

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- Numerical manifold method for simulation of excavation unloading in geotechnical engineering
- Vol. 27, Issue 2, (2006)
- 作者机构：
  
  1. 贵州大学土木建筑工程学院,贵阳,550003
  2. 重庆大学土木工程学院,重庆,400045
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU452
- Online First：25 October 2013，
  
  Published：2006
- 稿件说明：
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ZHU Ai-jun, DENG An-fu, ZENG Xiang-yong. Numerical manifold method for simulation of excavation unloading in geotechnical engineering[J]. 2006, 27(2).
DOI：

ZHU Ai-jun, DENG An-fu, ZENG Xiang-yong. Numerical manifold method for simulation of excavation unloading in geotechnical engineering[J]. 2006, 27(2). DOI：

摘要

基于数值流形方法数学覆盖与物理网格的相对独立性，考虑任一时刻体系中真实存在的各平衡力项对体系平衡的作用，提出用数值流形方法模拟岩土工程开挖卸荷的方法。相对于传统数值方法，数值流形方法在模拟开挖时不用计算开挖面上的释放荷载，不用为卸除的材料部分准备专门的单元，简单的数学网格可以适应任意的开挖过程，使其对开挖的模拟更加简便和有效，同时高阶的流形方法对开挖问题具有较高的求解精度。

Abstract

Based on the relative independence of mathematical cover and physical grid

and considering the action of truely existent various equilibrant force in system for system balance

a method of simulation for excavation unloading using numerical manifold method in geotechnical engineering is proposed. Compared with the traditional numerical method

the numerical manifold method need not calculate the released load on excavation face

need not prepare special element for unloaded material part; simple mathematic grid can meet the arbitrary course of excavation; so it is more convenient and effective; at the same time

high-order manifold method has better precision for excavation.

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