Unified Solution of Expansion of Cylindrical Cavity of Elastic-Brittle-Plastic Strain-Softening Materials with Different Elastic Modulus in Tensile and Compression

Abstract:

For strain-softening materials with different elastic modulus of tensile compression, two controlling parameters were introduced to take into account the different modulus and strainsoftening properties. By means of twin shear unified strength theory, unified solutions calculating stress and displacement fields of expansion of cylindrical cavity were derived. The effects caused by different elastic modulus in tensile and compression, different models and strain-softening rates on stress and displacement fields, development of plastic zone were analyzed. The results show the ultimate expansion pressure, stress and displacement fields and development of plastic zone vary with the changes of different elastic modular, different models and strain-softening properties.

• Periodical: Key Engineering Materials (Volumes 324-325)
• Pages: 823-826
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.324-325.823
• Online since: November 2006
• Authors: Jian Zhong Xia, Zhan You Luo, Wei Tang Wang, Wei Liu
• Keywords: Elastic Theory with Different Modulus in Tension and Compression, Elastic-Brittle-Plastic Strain-Softening Model, Expansion of Cylindrical Cavity, Mohr-Coulomb Material, Tresca Material

References

[1] Pamer, A.C. (1972). Undrained plane-strain expansion of a cylindrical cavity in clay: a simple interpretation of the pressuremeter test. G�otechnique, 29(4), 451-457.

DOI: 10.1680/geot.1972.22.3.451

[2] Carter, J.P., Booker, J.R., and Yeung, S.K. (1986). Cavity expansion in cohesive frictional geomaterails. G�otechnique, 36(3), 345-358.

DOI: 10.1680/geot.1986.36.3.349

[3] Vesic, A.S. (1972). Expansion of Cavities in Infinite Soil Mass. Proc. ASCE V98, SM3, 265290.

[4] Gong, X.N. (1984). Oil tank foundation property of Soft Clay. Ph.D. Thesis of Zhejiang University, Zhejiang.

[5] Ladanyi.B. (1967). Expansion of cavities in brittle media. Int.J. Rock Mech. Min. Sci., 4, 301-328.

[6] Jiang M.J., and Shen Z.J. (1996). Computation and Analyses on bearing Capacity of foundation with strain-softening behavior. Science research of water conversation and conveyance, 3(1), 42-47.

[7] Yu, H.S. (2000). Cavity Expansion Methods in Geomechanics. Kluwer Academic Publishers, The Netherlands.

[8] Jiang M.J., and Shen Z.J. (1996). Computation and Analyses on bearing Capacity of foundation with strain-softening behavior. Science research of water conversation and conveyance, 3(1), 42-47.