1. 1) Asakura, T., Ando, T., and Kojima, Y.: Analysis on the behavior of tunnel lining Experiments on double track tunnel lining, QR of RTRI, Vol. 33, No. 4, 1993.
2. 2) Pottler, R.: Non-reinforced inner linings of tunnels: Numerical model-safety philosophy with different nonlinear elastic material models, Proc. of Int. Conf. on Computer Aided Analysis and Design of Concrete Struc., Nenad, B. and Herbert, M., eds., Vol. 1, pp. 683-694, 1990.
3. 3) de Borst, R. and Nauta, P.: Smeared crack analysis of reinforced concrete beams and slabs failing in shear, Proc. Int. Conf. on Computer Aided Analysis and Design of Concrete Struc., Damjanic, F. et. al eds., Part 1, Prineridge Press, Swansea, pp. 261-273, 1985.
4. 4) Asakura, T., Ando, T. and Kojima, Y.: Experiments of inner reinforced tunnel linings, QR of RTRI, 1998.
5. 5) Bazant, Z.: Size effect in blunt fracture: concrete, rock, metal, J. of Eng. Mech. ASCE, Vol. 110, No. 4, pp. 518-535, 1984.