RESEARCH ON THE LONG-TERM BEHAVIOUR AND EVALUATION OF LINING CONCRETE OF THE SEIKAN TUNNEL

SOILS AND FOUNDATIONS

TAKESHI MATSUNAGA¹  TAKESHI KUDO³  TETSUSHI KURAKAWA²  YUKIHIKO TUCHIYA⁴ 

[1] Tunnel Department, Pacific Consultants Co., LTD.;Yamanashi Linear Express Construction Office, Tokyo Regional Bureau, JRTT;Hokkaido Satellite Office, Tunnel Department, Pacific Consultants Co., LTD.;Japan Railway Construction, Transport and Technology Agency (JRTT)

关键词: cut-off grouting;    evaluation of lining concrete;    long-term measurement;    undersea tunnel;    water head;    (IGC: H5);   

DOI  :  10.3208/sandf.49.969

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 摘 要 】

References(11)Some of the important issues involved in undersea tunnels distinct from land tunnels include examining what measures should be taken against inexhaustible water and huge hydraulic pressure during construction and how to maintain the structural soundness after completion. An undersea tunnel that loses its soundness and causes flooding or any other forms of accidents while still in service is likely to put human lives at risk and pose a threat to the safety of the social infrastructure, and the restoration of such structure may become impossible in some cases. However, because much of the behaviour of tunnels under operation is still yet to be defined, the maintenance of existing undersea tunnels is practically limited to the treatment of symptoms based on past experiences, as in the case for land tunnels. Focusing on the long-term measurements of Seikan Tunnel that have been recorded since 1988, this paper organizes and analyzes their results, examines the mechanism of long-term behaviour of tunnel lining, and proposes a new soundness evaluation methodology for the undersea tunnel lining (Tuchiya, 2007).

【 授权许可】

Unknown