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Stability analysis of a jointed beam
Author(s) -
Chugh Ashok K.
Publication year - 1977
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610010402
Subject(s) - joint (building) , flexural strength , structural engineering , beam (structure) , stiffness , stress (linguistics) , transverse plane , tension (geology) , joint stiffness , materials science , geology , compression (physics) , engineering , composite material , philosophy , linguistics
Abstract A numerical step‐by‐step procedure, analogous to the ‘Initial Stress Method,’ is presented for the analysis of a single‐layer jointed rock beam subjected to gravity loads and in‐plane in situ formation pressure. The joints are permitted to open at locations where the flexural stresses exceed flexural strength. The material properties may be different for each rock block and joint. A detailed algorithm is given for the solution of the problem. The results of several analyses indicating the relative effects of initial formation pressure, transverse load, stiffness of the joint material, and joint spacing on the response of a jointed beam are presented. The convergence characteristics of the numerical procedure are included. The joint material is assumed to be ‘no‐tension’ type. Both the geometric and material non‐linear effects are considered.