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| Study on the Longitudinal Rigidity of Segment Lining of Shield Tunnel |
| LI Wei |
| Guizhou University, Guiyang, Guizhou 550003，China |
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Abstract Research purposes: When a shield tunnel traverses the section with different geological conditions or surface
buildings , longitudinal deformation and internal forces for segment lining will be produced. So , longitudinal mechanical
problems of the shield tunnel must be considered in design of the segment lining.
Research conclusions: (1) The theoretical formula of equivalent rigidity coefficients for tension, shearing and bending is , X referring to tension, shearing and bending. (2) The equivalent rigidity coefficient of the segment lining of the shield tunnel in a single subway on the longitudinal bending is 0. 05 obtained with FEM ( finite element method ).
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Received: 24 February 2008
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2008, Vol. 25 
