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1. 发明专利

JP2000230245A CONTINUOUS HOLE DRILLING METHOD AND ITS DEVICE 失效
公开(公告)号：JP2000230245A
公开(公告)日：2000-08-22
申请号：JP3309699
申请日：1999-02-10
申请人： TAKENAKA KOMUTEN CO , OHBAYASHI CORP , FUDO CONSTRUCTION CO , TAKENAKA DOBOKU , SANWA KIZAI CO LTD
发明人： YAMAMOTO MITSUKI , MATSUO TATSUYUKI , SUGIYAMA KATSUHIDE , OKUMURA RYOSUKE , YAMAZAKI KAZUO
IPC分类号： E02F5/02
摘要： PROBLEM TO BE SOLVED: To efficiently drill continuous holes in the ground by maintaining continuity. SOLUTION: A large-diameter hole drilled by main drill rods 1A, 1B rotatably provided at the lower end of a drive device and provided with stirring blades 9 on the periphery, a small-diameter single hole drilled by a first auxiliary drill rod 13 rotatably provided on one side of the main drill rods 1A, 1B and provided with stirring blades 17 partially lapped on the rotating loci of the stirring blades 9 of the main drill rods 1A, 1B and having the rotating radii smaller than those of the stirring blades 9 on the periphery, and two small- diameter double holes drilled by two auxiliary drill rods 14 rotatably provided on the other side of the main drill rods 1A, 1B and provided with stirring blades 18 partially lapped on the rotating loci of the stirring blades of the main drill rods 1A, 1B and having the rotating radii smaller than those of the stirring blades 9 on the periphery and arranged at an interval in the direction perpendicular to the continuous hole execution direction are concurrently drilled in a first excavation. A second excavation is conducted to drill continuous hole lines so that a new small-diameter single hole is partially lapped on the existing large-diameter hole and two small-diameter double holes.

2. 发明专利

JPH08144264A DEEP MIXING METHOD OF SOIL STABILIZATION AND DEEP MIXING DEVICE OF SOIL STABILIZATION 失效
公开(公告)号：JPH08144264A
公开(公告)日：1996-06-04
申请号：JP33041194
申请日：1994-11-25
申请人： FUDO CONSTRUCTION CO
发明人： SUGIYAMA KATSUHIDE , OTSUKA MAKOTO , TATSUTA YOSHIHIKO
IPC分类号： E02D3/12
摘要： PURPOSE: To make it possible to ensure vertically of rotary shafts when they are penetrated by changing their rotational directions every proper penetration depth when the rotary shafts are penetrated into the ground, mounting stirring wings extended in the radial direction to the lower ends of the rotary shafts in a rotatable manner, and making it possible to change an inclination to a specific angle. CONSTITUTION: Two rotary shafts 2 are monolithically suspended to a construction machine main body 1 in a liftable manner, and stirring wings 3 are projected to lower layers of the rotary shafts 2 in the radial direction in a turnable manner. Rotational directions of the rotary shafts 2 and 2 when penetration is made are alternately changed to A direction (forward) - B direction (reverse) every penetration depth. When the rotary shafts 2 and 2 are pulled out, the rotational directions of the rotary shafts 2 and 2 are changed so as to make reverse to when the penetration is made to stir the loose soil uniformly. The base sections of the stirring wings 3 are mounted to the lower ends of the rotary shafts 2 in a rotatable manner, and the inclination in the turning direction can be changed with a turning mechanism. When the rotary shafts 2 are reversedly revolved, the inclination in the turning direction of the stirring wings 3 is made to the same one as that of the penetration, and the lowering of penetration efficiency can be prevented.

3. 发明专利

JP2000303466A EARTH RETAINING METHOD 失效
公开(公告)号：JP2000303466A
公开(公告)日：2000-10-31
申请号：JP11165499
申请日：1999-04-20
申请人： FUDO CONSTRUCTION CO
发明人： SUGIYAMA KATSUHIDE
IPC分类号： E02D17/04 , E02D5/18
摘要： PROBLEM TO BE SOLVED: To narrow a soil improvement scope obtained by earth retaining piles by mixing excavated soil, surplus soil except excavated soil, a hardener, and lightweight material and forming an earth retaining wall having a specified unit volume weight, in the ground outside of an excavating zone. SOLUTION: Columnar piles are erected by a continuous wall construction method or the like making use of a mechanical agitation method, a high pressure cross jet stream method, a high pressure jet stream method and many columnar piles are arranged in sseries to form an aerth retaining wall 1. In this time, a material containing excavated soil, surplus soil except excavated soil, a hardener, and a lightweight material is used as a lightweight hardener. The hardener in the lightweight hardener or the lightweight material are mixed so that a unit volume weight after formation of the earth retaining wall 1 ranges within 0.6-1.3 ton/m3. In this way, since increase of the lateral pressure caused by the own weight can be prevented, soil improvement scope of vertical pile rows 3-6 can be made narrow as W1 and it can be adapted in a narrow site without invasion of adjoining boundary. Further, since the pile length H2 (

4. 发明专利

JPH0988057A GROUND IMPROVEMENT METHOD AND GROUND IMPROVEMENT DEVICE 失效
公开(公告)号：JPH0988057A
公开(公告)日：1997-03-31
申请号：JP24349595
申请日：1995-09-21
申请人： SHIMIZU CONSTRUCTION CO LTD , FUDO CONSTRUCTION CO , TENOX KK
发明人： ODAWARA TAKURO , KAMIMURA KAZUYOSHI , MATSUMOTO HISAYUKI , NISHIMURA SHINICHI , TATSUTA YOSHIHIKO , SUGIYAMA KATSUHIDE , YAMAMOTO MINORU , FUKUDA ATSUO , KAMI SHUJI , HORIKIRI SETSU
IPC分类号： E02D3/12
摘要： PROBLEM TO BE SOLVED: To contrive to reduce cost by setting a specified amount of earth removal per unit time in conformity with a geological condition of a soil to be improved and forming a screw lot so as to conform with the specified amount of earth removal by changing a layout spacing of a screw blade. SOLUTION: The amount of supply of cement slurry in a hardening agent supply mechanism 23 is controlled in conformity with a geological condition of a soil G while screw rods 12 are formed to provide a specified amount of earth removal by setting a layout spacing (d) between screw blades 19b provided in a shaft 19 with a screw to a specific value. Then, in the case of a geological condition which demands for a large amount of supply, the layout spacing (d) is minimized, thereby moving a proper amount of excavated earth and sand upward while in the case of a geological condition which calls for a small amount of supply, the layout spacing (d) is maximized, thereby preventing the excavated earth and sand from moving upward. It is possible to optimize the amount of earth by selecting an optimum value for the layout spacing (d) and inhibit a rise and drop in the earth pressure and reduce cost by removing the soil in conformity with the geological condition.

5. 发明专利

JPH0931968A METHOD AND DEVICE FOR SOIL IMPROVEMENT 失效
公开(公告)号：JPH0931968A
公开(公告)日：1997-02-04
申请号：JP18309195
申请日：1995-07-19
申请人： SHIMIZU CONSTRUCTION CO LTD , FUDO CONSTRUCTION CO , TENOX KK
发明人： ODAWARA TAKURO , KAMIMURA KAZUYOSHI , MATSUMOTO HISAYUKI , NISHIMURA SHINICHI , TATSUTA YOSHIHIKO , SUGIYAMA KATSUHIDE , YAMAMOTO MINORU , FUKUDA ATSUO , KAMI SHUJI , HORIKIRI SETSU
IPC分类号： E02D3/12
摘要： PROBLEM TO BE SOLVED: To easily carry out a removing work for soil corresponding to the geological condition, by providing shaft parts with screws and shaft parts without screws having appropriate lengths respectively in advance in accordance with the geological condition of the improving ground and constituting the screw rod to obtain a specified volume of removing soil. SOLUTION: A screw rod 12 is constituted to make long the shaft 19 part with screws in a geological condition to supply much solidifying agent and to make long the shaft 20 without screws in a geological condition to supply only a little solidifying agent. The screw rod 12 is rotated at a constant speed while supplying a certain quantity of solidifying material corresponding to the geological condition of the improving ground by a solidificer-feeding mechanism 23 and rotating the screw rod at a constant speed. In this way, the supply volume of the solidifying material and the removed volume of excess soil in the ground meet the geological condition. And hence, increase or decrease of earth pressure can be regulated by the removal of soil corresponding to the geological condition and the ground can be improved in low cost.

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