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Comparison of Numerical and Analytical Methods of Analysis of Tunnels

(university of khartoum, 2014) Elarabi, Hussein ; M. Mustafa, Ahmed

This paper aims to enumerate the methods used in tunnels analysis and construction procedures, demonstrate and evaluate the use of PLAXIS 3D tunnel program through a comparison with analytical method. Two methods (analytical and numerical) have been used to obtain the solution of tunnel analysis. A case study was performed for London Transport Fleet Line, located in Green Park and consists of a single tunnel. The analytical solution carried out using the Bobet method, whereas the numerical accomplished by finite element PLAXIS program. Two different process of numerical analysis were conducted; with and without respect to construction process. The settlements at the tunnel center for the analytical, numerical without respect to construction and observed were found 7.9, 5.72 and 6.1 mm.
Verification of Numerical and Analytical methods of Analysis of Tunnel

(university of khartoum, 2014-11-12) M. Mustafa, Ahmed ; Elarabi, Hussein