EVALUATION OF ASEISMICITY ON R. C. SEGMENT JOINT BY CURVED BOLT

Abstract

A curved bolt is an economical system and being adopted commonly to joint R. C. segmental linings of a shield tunnel. On the other hand, these days higher performance for seismic resistance of a shield tunnel structure is getting requined in the basis at the Kobe Earthquaque experience, and especially the deformational character of the long longitudinal joint is very important factor to improve the matter. However, the aseismicity of the curved bolt joint have not been studied well, and capacity. Then in this paper, the tensile stiffness of the curved joint was examined by the analysis and the actual scale loading test. Furthermore, water-tightness of the hydro-swelling seal was also experimented for the large lipping by earthquaque.