Stress and strain dependent stiffness in a numerical model of a tunnel
作者： J Bohác , I Herle , D Mašın
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摘要: In the current road tunneling project in centre of Prague, Czech Republic, several tectonic faults were encountered. The joints are filled b y fragments shales a silty to clayey matrix. laboratory, behaviour material was studied using mixtures sand or crushed rock with fines at different mixing ratios. Further laboratory tests carried out from joints, both on reconstituted and undisturbed triaxial specimens. data re used numerical simulation o f deformations massif during tunnel construction. A comparison constitutive models for fault i s presented, linear-elastic perfectly-plastic model stress strain dependent stiffness model, advantages demonstrated.
参考文章(9)
M J Gunn, THE PREDICTION OF SURFACE SETTLEMENT PROFILES DUE TO TUNNELLING PREDICTIVE SOIL MECHANICS. PROCEEDINGS OF THE WROTH MEMORIAL SYMPOSIUM, 27-29 JULY 1992, ST CATHERINE'S COLLEGE, OXFORD. ,(1993)
R. J. Jardine, D. M. Potts, A. B. Fourie, J. B. Burland, Studies of the influence of non-linear stress-strain characteristics in soil-structure interaction Geotechnique. ,vol. 36, pp. 377- 396 ,(1986) , 10.1680/GEOT.1986.36.3.377
A. Niemunis, I. Herle, Hypoplastic model for cohesionless soils with elastic strain range Mechanics of Cohesive-frictional Materials. ,vol. 2, pp. 279- 299 ,(1997) , 10.1002/(SICI)1099-1484(199710)2:4<279::AID-CFM29>3.0.CO;2-8
S. E. Stallebrass, R. N. Taylor, The development and evaluation of a constitutive model for the prediction of ground movements in overconsolidated clay Geotechnique. ,vol. 47, pp. 235- 253 ,(1997) , 10.1680/GEOT.1997.47.2.235
J. H. Atkinson, Non-linear soil stiffness in routine design Géotechnique. ,vol. 50, pp. 487- 508 ,(2000) , 10.1680/GEOT.2000.50.5.487
T. I. Addenbrooke, D. M. Potts, A. M. Puzrin, The influence of pre-failure soil stiffness on the numerical analysis of tunnel construction Geotechnique. ,vol. 47, pp. 693- 712 ,(1997) , 10.1680/GEOT.1997.47.3.693
S. Thevanayagam, S. Mohan, Intergranular state variables and stress-strain behaviour of silty sands Geotechnique. ,vol. 50, pp. 1- 23 ,(2000) , 10.1680/GEOT.2000.50.1.1
R. J. Mair, R. N. Taylor, A. Bracegirdle, SUBSURFACE SETTLEMENT PROFILES ABOVE TUNNELS IN CLAYS Geotechnique. ,vol. 43, pp. 315- 320 ,(1993) , 10.1680/GEOT.1993.43.2.315
Bolton, AM Britto, GR Dasari, Putting small strain non-linearity into Modified Cam Clay model A.A. Balkema. ,(1994)