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。
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.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第2期179-183,共5页
Rock and Soil Mechanics
基金
西部交通建设科技项目(No.2002-318-000-26)
关键词
数值流形方法
数学覆盖
岩土工程
开挖卸荷
numerical manifold method
mathematical cover
geotechnical engineering
excavation
