Influence of Tunneling in Soft Soils on Response of Footings Loaded Dynamically in Vertical Direction

سال انتشار: 1380
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,277

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شناسه ملی سند علمی:

042_7854530471

تاریخ نمایه سازی: 11 مهر 1384

چکیده مقاله:

The development in urban areas may lead to the construction of shallow tunnels. The presence of such tunnels may cause tunnel-soil-foundation interaction. In other words, the tunnel construction may alter the response of already-constructed supporting foundations, resulting in changes in machine operations. Such changes may affect the operational behaviour of in-service machines, which are supported by dislocated foundations. In this paper, a two-stage analysis for changes in the response of footings loaded dynamically in axial direction due to tunnelling in clayey soils is performed. A recently developed mathematical model is first used to determine the free field movements of the ground in the vertical direction due to tunnelling. The estimated free field vertical movements are then are imposed on the footing soil and the response of the footing is calculated under several vertical dynamic loads. In the analysis of the footing, for each dynamic load the well-known equilibrium equation is established and explicitly solved. It is shown, through a parametric study, that the effects of tunnelling on the footing response is of great importance and depends on tunnel geometry, tunnel placement relative to the footing, ground loss ratio, and footing geometry. It will also be shown, depending on the placement of the tunnel relative to the footing, that interaction of tunnel-soil-footing can alter the footing response. A parametric study shows that beyond a certain distance between the tunnel axis and the footing, the interaction vanishes.

نویسندگان

Mahmoud Ghazavi

Assistant Professor, Civil Engineering Department, Isfahan University of Technology, Isfahan, Iran

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  • -Attewell, P.B., Yeats, . and Selby, A.R. 1986. Soil movements ...
  • -Badie, A., and Wang, M.C. 1984. Stability of spread footing ...
  • -Das, B.M. 1993. Principles of soil dynamics. PWS-Kent Publishing Company, ...
  • -Dobry, R. and Gazetas, G 1985. Dynamic stiffiess and damping ...
  • -Chen L.T., Poulos, H.G., and Loganathan, N. 1998. The behaviour ...
  • -Gunn, M.J. 1993. The prediction of surface settlement profiles due ...
  • -Lee, R.G., Turner, A.J., and Whitworth, L.J. 1994. Deformations caused ...
  • -Lysmer, J. and Richart, F.E. 1966. Dynamic response of footing ...
  • -Mair, R.J. 1993. Developments in geotechnical engineering research: application to ...
  • -Peck, R.B. 1969. Deep excavations and tunnelling in soft ground. ...
  • -Rowe, R.K., and Kack, G.L. 1983. A theoretical examination of ...
  • -Sagaseta, C. 1987. Analysis of undrained soil deformation due to ...
  • -Verruijt, A. and Booker, J.R. 1996. Surface settlements due to ...
  • -Wang, M.C., and Badie, A. 1985. Effect of underground void ...
  • -Whitman, , R.V., and Richart, F.E.Jr. 1967. Design procedures for ...
  • نمایش کامل مراجع