We have developed RC segments (called “Simple Process Segment”) which have new type structural joints. Simple Process Segment has a feature that joints are prepared inside the segment part and aren't exposed in the superficies out of the segment. For longitudinal joint, we adopt coupler which can be concluded only inserted in the direction of the tunnel axis.
We report on the examination result which was implemented to grasp the dynamics characteristic of coupler when using it as longitudinal joint.
