سیویلیکا را در شبکه های اجتماعی دنبال نمایید.

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

Publish Year: 1380
Type: Conference paper
Language: English
View: 2,524

This Paper With 9 Page And PDF Format Ready To Download

Export:

Link to this Paper:

Document National Code:

042_7854530471

Index date: 3 October 2005

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

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.

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

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

Mahmoud Ghazavi

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

مراجع و منابع این Paper:

لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :
-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