Analysis of Incremental Excavation Based on Critical State Theory
- 1 June 1990
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Geotechnical Engineering
- Vol. 116 (6) , 964-985
- https://doi.org/10.1061/(asce)0733-9410(1990)116:6(964)
Abstract
Earth structures such as embankments and excavations are constructed sequentially, and for realistic modeling of these structures the construction sequences should be simulated as accurately as possible. This paper addresses the problems associated with accurate incremental excavation modeling using an efficient finite element‐based excavation analysis algorithm that satisfies the uniqueness principle for cutting in an elastic material and a new stress‐point integration algorithm for the modified Cam‐Clay model that is both accurate and stable. The combined excavation and stress‐point algorithm is unconditionally convergent at subfailure condition and is shown to perform extremely well on an intensive accuracy analysis designed to model the process of sequential excavation in a modified Cam‐Clay soil under plane strain, axisymmetric, and three‐dimensional configurations. Both drained and undrained conditions are considered in the analyses. The paper ends with an example of braced wall movement prediction ...Keywords
This publication has 17 references indexed in Scilit:
- Numerical simulation of excavation in elastoplastic soilsInternational Journal for Numerical and Analytical Methods in Geomechanics, 1989
- Non‐smooth multisurface plasticity and viscoplasticity. Loading/unloading conditions and numerical algorithmsInternational Journal for Numerical Methods in Engineering, 1988
- Critical state models in computational geomechanicsEngineering Computations, 1988
- Implicit integration of elastoplastic relations with reference to soilsInternational Journal for Numerical and Analytical Methods in Geomechanics, 1987
- An analysis of a new class of integration algorithms for elastoplastic constitutive relationsInternational Journal for Numerical Methods in Engineering, 1986
- A constitutive model for the stress–strain–time behaviour of ‘wet’ claysGéotechnique, 1985
- Generalization of selective integration procedures to anisotropic and nonlinear mediaInternational Journal for Numerical Methods in Engineering, 1980
- On modelling the unloading‐reloading behaviour of soilsInternational Journal for Numerical and Analytical Methods in Geomechanics, 1978
- Errors in Simulating Excavation in Elastic Media by Finite ElementsSoils and Foundations, 1973
- Relations Between Process of Cutting and Uniqueness of SolutionsSoils and Foundations, 1970