Strength Reduction Method for Stability Analysis of Local Discontinuous Rock Mass with Iterative Method of Partitioned Finite Element and Interface Boundary Element
Joint Authors
Zhao, Lanhao
Li, Tongchun
He, Jinwen
Li, Xiaona
Niu, Zhiwei
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-20
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
SRM (strength reduction method) with iterative method of PFE (partitioned fnite element) and IBE (interface boundaryelement) is proposed to solve the safety factor of local discontinuous rock mass.
Slope system is divided into several continuous bodies and local discontinuous interface boundaries.
Each block is treated as a partition of the system and contacted by discontinuous joints.
The displacements of blocks are chosen as basic variables and the rigid displacements in the centroid of blocks are chosen as motion variables.
The contact forces on interface boundaries and the rigid displacements to the centroid of each body are chosen as mixed variables and solved iteratively using the interface boundary equations.
Flexibility matrix is formed through PFE according to the contact states of nodal pairs and spring flexibility is used to reflect the influence of weak structural plane so that nonlinear iteration is only limited to the possible contact region.
With cohesion and friction coefficient reduced gradually, the states of all nodal pairs at the open or slip state for the first time are regarded as failure criterion, which can decrease the effect of subjectivity in determining safety factor.
Examples are used to verify the validity of the proposed method.
American Psychological Association (APA)
Li, Tongchun& He, Jinwen& Zhao, Lanhao& Li, Xiaona& Niu, Zhiwei. 2015. Strength Reduction Method for Stability Analysis of Local Discontinuous Rock Mass with Iterative Method of Partitioned Finite Element and Interface Boundary Element. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1074944
Modern Language Association (MLA)
Li, Tongchun…[et al.]. Strength Reduction Method for Stability Analysis of Local Discontinuous Rock Mass with Iterative Method of Partitioned Finite Element and Interface Boundary Element. Mathematical Problems in Engineering No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1074944
American Medical Association (AMA)
Li, Tongchun& He, Jinwen& Zhao, Lanhao& Li, Xiaona& Niu, Zhiwei. Strength Reduction Method for Stability Analysis of Local Discontinuous Rock Mass with Iterative Method of Partitioned Finite Element and Interface Boundary Element. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1074944
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074944