ANALYTICAL STUDY ON TUNNEL LINING OF STEEL-FIBER-REINFORCED CONCRETE

The frame analysis is extensively used in the design of tunnel lining. In order to apply the frame analysis to steel-fiber-reinforced concrete (SFRC) lining whit cracking and its growth, this paper proposes modeling and analytical procedures taking account of tension-softening relationship of SFRC. The proposed model and analytical scheme show the applicability of the frame analysis which could analyze cracking behaviors, by assuming rotating spring at nodes where a crack occurs. In addition, the effectiveness of proposed technique was verified by comparison with both results of bending tests and experiments by tunnel models.