EXPERIMENTAL STUDY ON SEGMENTAL LINING IN FLAT SECTIONAL SHIELD TUNNELING METHOD

Abstract

Segmental lining of flat sectional shield tunnel was discussed through the model experiment. In the experiment, the thickness of the model lining is partially changed to support the momentum, which is remarkably induced at the crown, invert and spring line of the flat sectional tunnel. The knowledge has been obtained that employment of the lining whose thickness is partially varied can reduce the tension strain, and its reason was studied through the calculation based on the conventional designing method of the segmental lining.