PURPOSE: To make it possible to carry out constructional reinforcement without providing any reinforced member to the inside of a tunnel by inserting anchored members into anchored holes provided to connection sections of a tunnel structure having a deformed section consisting of a main tunnel and auxiliary tunnel to fix them to a bedrock.
CONSTITUTION: Anchored holes 13 are formed in the shape of openings in a tunnel 12 from a bedrock 19 to connection sections 9A and 9B of corner angle sections 3A, 3B, etc. of a main tunnel 2a and auxiliary tunnel 2b of a tunnel structure 1 having a deformed section such as eye glasses shape, etc. consisting of the main tunnel 2a and auxiliary tunnel 2b. After that, anchored members 6 are inserted into the anchored holes 13, and they are fixed to the bedrock 19. Clamping members 10 are provided to tunnel side ends 6a of the anchored members 6 so that they are pushed and supported to the connection sections 9A and 9B through the anchored members 6. According to the constitution, the whole space can be effectively used so that connection section reinforced means 5A and 5B hold no space in the tunnel 12.
ITO YASUHIRO
MORITA YOSHIHIRO
HAGIWARA HIDEKI
NAKAMURA MINORU
MASUDA SHUICHI
SADA TATSUNORI
KAJIMA CORP
SATO KOGYO
SHIMIZU CONSTRUCTION CO LTD
NIPPON STEEL CORP
NISHIMATSU CONSTR CO LTD
MITSUI CONSTR