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1. 发明专利

JP2008303680A Cutting method for underwater structure and cutting device 有权
标题翻译：水下结构和切割装置的切割方法
公开(公告)号：JP2008303680A
公开(公告)日：2008-12-18
申请号：JP2007153987
申请日：2007-06-11
申请人： Kajima Corp , 鹿島建設株式会社
发明人： FURUYA TATSUO , ANAI HIDEKAZU , YOSHIMURA HAYATO , MORICHIKA YOSHIHIKO , HARADA TSUNEKI , TAKAGI YASUMASA , KAWADA MASATOSHI , KANDA SHINICHI
IPC分类号： E02D9/04
摘要： PROBLEM TO BE SOLVED: To provide a cutting method for an underground structure which efficiently safely cuts a large-sized diameter pile and a concrete structure that exist in water as the foundation of a bridge and other large-sized buildings in a river and on the sea, and also to provide a cutting device used for the same.
SOLUTION: The inside of an underwater pile 3 is core-hollowed in advance, and a cutting part 7 is inserted therein. The cutting part 7 is rotated in the pile by a rotating device 23. A nozzle for abrasive jet cutting is arranged at the cutting part 7 and cuts the underwater pile 3 while rotating in the pile. Pressure in the pile 5 is kept to be not lower than outer hydrostatic pressure in a cutting position. An underwater camera is arranged in the cutting part and a cutting state can be grasped.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种地下结构的切割方法，其有效地安全地切割大型直径的桩和存在于水中的混凝土结构作为桥梁和其他大型建筑物在河中的基础并在海上，还提供了一种用于此的切割装置。解决方案：水下桩3的内部预先是中空的，切割部7插入其中。切割部分7通过旋转装置23在绒头中旋转。用于磨料射流切割的喷嘴布置在切割部分7处并且在桩中旋转的同时切割水下桩3。桩5中的压力在切割位置保持不低于外部静水压力。在切割部中配置有水下摄像机，能够抓住切断状态。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2003206697A CONSTRUCTION METHOD OF UNDERGROUND STRUCTURE 审中-公开
公开(公告)号：JP2003206697A
公开(公告)日：2003-07-25
申请号：JP2002006088
申请日：2002-01-15
申请人： KAJIMA CORP
发明人： SUDA TERUO , HIRANO NOBORU , KIDA HIROMITSU , YOSHIKAWA TADASHI , ANAI HIDEKAZU , MORICHIKA YOSHIHIKO
IPC分类号： E21D9/01 , E21D9/00 , E21D9/04 , E21D9/06 , E21D13/02
摘要： PROBLEM TO BE SOLVED: To provide a construction method of an underground structure hardly influencing a neighboring existing structure, and efficiently constructing the underground structure having a large underground space as much as possible under an extremely limited ground face of urban areas or the like. SOLUTION: Shield holes 7 and 8 are bored in both sides of the underground structure intended to construct respectively. A working space c is formed on the upper end of the inside of the shield hole 7 by making the inside space height h 1 of the shield hole 7 higher than the inside space height h 2 of the shield hole 8. Next, a plurality of steel pipes 5a are jacked from the side of the shield hole 7 to the side of the shield hole 8 in the working space c, and a pipe roof 5 is formed in ground 11 between the shield holes 7 and 8. Next, the ground 11 under the pipe roof 5 is excavated. A ground improving body 6 is formed in the ground of the upper side of the pipe roof 5 if necessary. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2001020693A TEMPORARILY ASSEMBLED SEGMENT REMOVING METHOD AND SUSPENDING METAL FITTING 失效
公开(公告)号：JP2001020693A
公开(公告)日：2001-01-23
申请号：JP18866799
申请日：1999-07-02
申请人： KAJIMA CORP
发明人： KOBAYASHI KENJI , MORICHIKA YOSHIHIKO , KADOTA TAKESHI , MARUYAMA FUKATADA
IPC分类号： E21D11/40
摘要： PROBLEM TO BE SOLVED: To provide a method for removing temporarily assembled segments, which can easily remove segments temporarily assembled in a starting shaft of a shield machine, and to provide a suspending metal fitting for use in the method. SOLUTION: In a method of carrying out initial boring while segments 1R to 11R which form an abutment test wall of a shield machine being temporarily assembled in a shaft 1, and removing the temporarily assembled segments 1R to 11R after completion, a back truss is removed, and an inter-ring bolt of the segment is detached. Then, the segment ring 1R on the side of the back truss is pulled to a space generated by removing the back truss, and an inter- piece bolt of the segment ring is detached. Next, a suspending metal fitting is attached to the segment piece by a screwing means, and the segment piece is suspended by using the suspending metal fitting, to thereby remove the one ring segment 1R. Thereafter, the same operation is repeatedly carried out, to thereby sequentially remove the segments which have been temporarily assembled in the shaft.

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