公开(公告)号：EP0979927A1

公开(公告)日：2000-02-16

申请号：EP99300507.3

申请日：1999-01-25

申请人： OBAYASHI CORPORATION ,  ISHIKAWAJIMA CONSTRUCTION MATERIALS CO., LTD.

发明人： Tauchi, Eiji, c/o OBAYASHI CORPORATION ,  Nakano, Akihiko, c/o OBAYASHI CORPORATION ,  Matsubara, Kenta, c/o OBAYASHI CORPORATION ,  Someya, Hiroki ,  Okayama, Susumu

IPC分类号： E21D11/08

CPC分类号： E21D11/083

摘要： One end of a circumferential joining end surface 2 of segments 1 which are joined together in the circumferential direction of an excavated tunnel is made the male side circumferential joining end surface 2a on which a male coupler 4 is provided, and the other end is made a female side circumferential joining end surface 2b on which a female coupler 5 is provided. On a base plate 7, a bolt 10, which provides an engagement part 16 comprising a flat washer 13, a disc spring 14, and a head 15, is erected, and made a male coupler 4. An engagement plate 23, formed by a notch 22 which engages the bolt 10, and is inserted and engaged between the base plate 7 and the engagement part 16, and tightly held by the elastic force of the disc springs 14, is made the female coupler 5. One of the axial joining end surfaces of the segments 1 joined together in the axial direction of the excavated tunnel is provided with an axial male coupler 31 having a joining rod 35, and the other end is provided with an axial female coupler 41 which holds in and fastens the joining rod 35.
In this manner, the joining operation between segments 1 can be simplified, and the operational efficiency improved.

摘要翻译： 在挖掘隧道的圆周方向上连接在一起的段1的周向接合端面2的一端被制成设置有阳型联接器4的阳侧周向接合端面2a，另一端形成为 阴侧周向接合端面2b，其上设置有母耦合器5。 在基板7上，竖立有设置有平垫圈13，盘簧14，头部15的卡合部16的螺栓10，并形成阳连接器4。 与螺栓10接合并且插入并接合在基板7和接合部16之间并且被盘簧14的弹性力紧紧地保持的凹口22制成阴连接器5。 在挖掘隧道的轴向连接在一起的段1的表面设置有具有接合杆35的轴向凸形联接器31，并且另一端设置有轴向凹形联接器41，其保持并紧固连接杆35 以这种方式，可以简化段1之间的连接操作，并提高操作效率。