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1. 发明专利

JP2002054131A SOIL IMPROVING STRUCTURE AND SOIL IMPROVING METHOD CAPABLE OF CONTROLLING PERIPHERAL GROUND DISPLACEMENT 失效
公开(公告)号：JP2002054131A
公开(公告)日：2002-02-20
申请号：JP2000243618
申请日：2000-08-11
申请人： HAZAMA GUMI , KAJITANI ENGINEERING KK , MARUYAMA KOGYO
发明人： KOGA AKIHIRO , ONO MUTSUO , ISHIHARA MASAAKI , SHIMA HIROYASU , NAKAKUMA KAZUYOSHI
IPC分类号： E02D3/10
摘要： PROBLEM TO BE SOLVED: To suppress and control horizontal displacement and ground settlement occurring in the ground on the periphery of an area targeted for improvement. SOLUTION: A plurality of drain materials 16 are almost vertically driven into the area 13 targeted for improvement with their head portions extended above the ground surface, and a vacuum pump 15 is connected to the head portions of the respective the drain materials via a horizontal drain material 12. Then, the drain materials and the horizontal drain material are hermetically coated with a sheet material 11, and a wall body or a groove is constructed along the drain materials in the ground on the periphery of the area targeted for improvement. Further, tiltemeters 18 for measuring horizontal displacement are set at the wall body or the groove, and the peripheral ground. While the horizontal displacement at stations are measured, the vacuum pump is driven to introduce and drain water from the drain materials via the horizontal drain material to the vacuum pump, and loading fill 14 is piled up on the sheet material, depending on fluctuations of the deformation, to thereby control the horizontal deformation.

2. 发明专利

JP2000104241A AIRTIGHT STRUCTURE IN VACUUM CONSOLIDATION METHOD AND AIRTIGHT SHEET EMBEDDING METHOD 失效
公开(公告)号：JP2000104241A
公开(公告)日：2000-04-11
申请号：JP27358798
申请日：1998-09-28
申请人： HAZAMA GUMI , MARUYAMA KOGYO , KAJITANI ENGINEERING KK
发明人： KOGA AKIHIRO , ONO MUTSUO , MATSUMOTO KOUKI , NAKAKUMA KAZUYOSHI , SHIMA HIROYASU , NAKAGAWA SUNAO
IPC分类号： E02D3/00 , E02D3/10
摘要： PROBLEM TO BE SOLVED: To ensure the airtightness at an end part of an airtight sheet and to easily keep it by embedding the airtight sheet end part into a groove filled with the fluid. SOLUTION: An airtight sheet 2 is placed on a horizontal drain material 3, a fluid 4 is packed in a groove 5 formed on the ground to be improved 40, and an end part 2a of the airtight sheet is embedded in the fluid 4. To embed the end part of the airtight sheet, the water, bentonite muddy water or the like is jetted from a neighborhood of a point of a digging device while digging the ground to be improved 40 by the digging device such as a multi-shaft auger or the like for stirring and mixing the same with the sediment of the ground to be improved, and the airtight sheet 2 is pressed in the stirred and mixed zone by a specific depth. The airtight sheet 2 is manually pressed into the fluid 4 by fixing a locking tool on a point of a rod. That is, the end part of the airtight sheet is back filled by the muddy water, so that the airtightness can be improved, the degree of vacuum can be increased, the consolidation of the ground to be improved can be promoted, and the effect on ground improvement can be increased.

3. 发明专利

JP2000054358A VACUUM CONSOLIDATION YARD FORMING EQUIPMENT AND FORMING METHOD 失效
公开(公告)号：JP2000054358A
公开(公告)日：2000-02-22
申请号：JP22478598
申请日：1998-08-07
申请人： HAZAMA GUMI , MARUYAMA KOGYO , KAJITANI ENGINEERING KK
发明人： KOGA AKIHIRO , ONO MUTSUO , MITANBATA ISAMU , CHIMOKU HIDETOMO , NAKAKUMA KAZUYOSHI , SHIMA HIROYASU
IPC分类号： E02D3/12 , E02D3/00 , E02D3/02
摘要： PROBLEM TO BE SOLVED: To provide equipment capable of performing vacuum consolidation yard forming process from the driving of drain members to the laying of airtight sheet. SOLUTION: Provided are a drain driving machine 10 capable of running on soft ground and a work carriage 20 towed by the drain driving machine 10; a work vehicle is equipped with a crawler type base machine 11 having a vuoyancy tank, a mandrel 12 and a leader 13 for driving the drain member into soft ground, an arm 15 and a boom 16 for supporting the leader 13 with a variable angle, and a paper reel 18a for supplying drain members to the mandrel 12. And the work carriage has a sled 27 supporting the carriage on soft ground and carries water passing members and airtight sheets 21 and working scaffolds 25, 23, 26 are respectively provided for drive work for drain members installation work for water passing members and laying work for airtight sheets.

4. 发明专利

JP2000154525A SOFT GROUND IMPROVING METHOD IN COLD DISTRICT 失效
公开(公告)号：JP2000154525A
公开(公告)日：2000-06-06
申请号：JP32952998
申请日：1998-11-19
申请人： MARUYAMA KOGYO , HAZAMA GUMI , KAJITANI ENGINEERING KK
发明人： NAKAKUMA KAZUYOSHI , KOGA AKIHIRO , ISHIHARA MASAAKI , ONO MUTSUO , SHIMA HIROYASU
IPC分类号： E02D3/00 , E02D3/10 , E02D31/14
摘要： PROBLEM TO BE SOLVED: To provide an improving method for soft ground capable of providing satisfactory construction efficiency and suppressing equipment cost. SOLUTION: This improving method for soft ground has a pretreatment process in which first water passing materials 12, 13 communicating with a first pump are arranged on a surface of the ground to be improved before a cold season comes, the water passing materials are covered with a first sheet 11, a negative pressure condition is created under the sheet by the pump to pump up underground water, and the underground water is maintained in the ground of a surface layer to be improved until a cold season comes to prevent freezing of the surface layer ground. Furthermore, it is composed of a process in which ground for construction 20 is prepared on the first sheet after the pretreatment process, a process in which a drain material 28 is placed in substantially vertical direction on the ground for construction, a process in which a second water passing material 23 is arranged on the ground for construction, a process in which a second sheet 21 is spread, a process in which a pump 25 communicating with the second water passing material is arranged, and a process in which water and gas in the ground are discharged by the pump.

5. 发明专利

JP2000160543A SOLUBLE VERTICAL DRAIN MATERIAL AND SOFT GROUND IMPROVING METHOD USING THE SAME 失效
公开(公告)号：JP2000160543A
公开(公告)日：2000-06-13
申请号：JP33523298
申请日：1998-11-26
申请人： MARUYAMA KOGYO , HAZAMA GUMI , KAJITANI ENGINEERING KK
发明人： NAKAKUMA KAZUYOSHI , KOGA AKIHIRO , MAEDA TERUNOBU , ONO MUTSUO , SHIMA HIROYASU
IPC分类号： E02D3/10
摘要： PROBLEM TO BE SOLVED: To improve the soft ground by constructing vertical drain materials placed in the ground to be improved at a specified interval of soluble material which is dissolved through the contact with a dissolving agent, and dissolving it if necessary. SOLUTION: A synthetic resin net 12 is formed by erecting a flat plate shaped synthetic resin wire materials 12b orthogonal to a flat plate shape synthetic resin wire materials 12a similar thereto, and connecting them at their cross points. The net 12 is covered with nonwoven cloth 13 to keep air passages for preventing generation of clogging, and thereby a soluble vertical drain materials 11 are formed. In this case, the net 12 and the cloth 13 are dissolved at a time by bringing the net 12 into contact with caustic soda. By placing the materials 11 into the ground to be improved, the verical drainage column can be constructed. The water and air contained in the ground to be improved between the columns are sucked up onto the ground to be improved through the drainage passage of the materials 11, thereby improving the ground. With this method, the management of work period can be performed surely.

6. 发明专利

JP2000144706A SOFT GROUND STABILIZATION 失效
公开(公告)号：JP2000144706A
公开(公告)日：2000-05-26
申请号：JP31522598
申请日：1998-11-06
申请人： MARUYAMA KOGYO , HAZAMA GUMI , KAJITANI ENGINEERING KK
发明人： SHIMA HIROYASU , NAKAKUMA KAZUYOSHI , KOGA AKIHIRO
IPC分类号： E02D3/10
摘要： PROBLEM TO BE SOLVED: To improve a soft ground efficiently into a hard one even in a deep section by loading vacuum pressure in to an improved ground through a vertical drain material and a water-conveyance material connected to the vertical drain material. SOLUTION: The load of vacuum pressure is continued from a vacuum pump 12 through a water-conveyance material 14 so that the insides of vertical drain materials 11 reach 0.4 atmospheric pressure or less, the whole region of an improved ground A is used as a decompression region and the increase of consolidation and strength is promoted, cracks C are generated from the deformation of boundary sections B1 among the ground A and non-improved grounds B, and the decompression region isolated from peripheral sections is manufactured in the improved ground A. Accordingly, not only the improved ground but also a deep section exceeding 20 m are consolidated surely and the increase of strength is promoted, and a hard ground can be improved efficiently. The ground can be improved more efficiently by the covering of the top face of the improved ground A with a synthetic-resin film prior to the load of vacuum pressure, the installation of a cut-off wall 15 to the peripheral section of the improved ground A, intermittent decompression load, load continuation after the generation of the decompression region, or banking or the like before and after the preparation of the decompression region.

7. 发明专利

JP2000104242A VACUUM CONSOLIDATION YARD FORMING DEVICE AND METHOD 失效
公开(公告)号：JP2000104242A
公开(公告)日：2000-04-11
申请号：JP27829298
申请日：1998-09-30
申请人： HAZAMA GUMI , MARUYAMA KOGYO , KAJITANI ENGINEERING KK
发明人： KOGA AKIHIRO , CHIMOKU HIDETOMO , ONO MUTSUO , MITANBATA ISAMU , NAKAKUMA KAZUYOSHI , SHIMA HIROYASU
IPC分类号： E02D3/00 , E02D3/10 , E02D15/08
摘要： PROBLEM TO BE SOLVED: To provide a device which can be executed a vacuum pressure close yard formation process from installing of a drain material to laying of an airtight sheet, in the soft ground in water. SOLUTION: This device is provided with a worktable 13 which floats on water, and a crawler 12 for moving the worktable 13 on the water in a desired direction. Moreover the worktable is provided with a drain material installing machine 11 for driving a drain material 20 to a soft ground 28 in water in a nearly vertical direction, a working stage for installing water flowing materials 21, 24 for passing water and gas from the drain material 20 in a nearly horizontal direction, and a back hoe 26 used when an airtight sheet 23 is laid down on the water flowing materials 21, 24.

8. 发明专利

JP2000054357A AIR-TIGHT SHEET AND GROUND IMPROVEMENT USING THE SAME 失效
公开(公告)号：JP2000054357A
公开(公告)日：2000-02-22
申请号：JP22557498
申请日：1998-08-10
申请人： HAZAMA GUMI , MARUYAMA KOGYO , KAJITANI ENGINEERING KK
发明人： KOGA AKIHIRO , ONO MUTSUO , NAKAKUMA KAZUYOSHI , SHIMA HIROYASU
IPC分类号： E02D3/00
摘要： PROBLEM TO BE SOLVED: To facilitate consolidation of ground by providing bag bodies in which a liquid material or a fluid material can be filled, at the ends of one or more sides of a sheet. SOLUTION: An air-tight sheet 10 is made rectangular and bag bodies 12 are formed at the four peripheral sides so as to surround the sheet 11 at the whole length, and charging/discharging openings 13 for liquid or fluid are formed at specified positions of the bag bodies 12. Further, partition walls are formed in the bag bodies 12 if necessary. The bag bodies 12 are embedded in the ground to lay the air-tight sheet 10, and in the state that the bag bodies 12 are embedded in the ground, liquid or fluid is injected in the bag bodies 12. In this way, when the bag bodies 12 of the air-tight sheet 10 are embedded in the ground, cohesive soil presses the surface of the bag bodies 12 and closely sticks thereto. Accordingly, when liquid is injected in the bag body in a state pressed by the cohesive soil, the bag body is more closely stuck to the cohesive soil, and the air-tightness can be securely obtained to promote consolidation.

9. 发明专利

JPH03206211A DRAIN MATERIAL, SOFT GROUND IMPROVING STRUCTURE USING DRAIN MATERIAL AND FOUNDATION PILLAR USING THE SAME STRUCTURE 失效
公开(公告)号：JPH03206211A
公开(公告)日：1991-09-09
申请号：JP107590
申请日：1990-01-09
申请人： HAZAMA GUMI , MARUYAMA KOGYO
发明人： ONO MUTSUO , KATO TOSHIAKI , NAKAKUMA KAZUYOSHI
IPC分类号： E02B11/00 , E02D3/10 , E02D5/38 , E02D5/46
摘要： PURPOSE:To improve the working efficiency by draining void water produced by banking to a drain groove through a drain member consisting of a leading body driven into the ground and a drain member body, and then placing a cement hardening agent in the drain member body. CONSTITUTION:A drain member 8 is formed of a leading body 7 driven into the ground while excluding the surrounding ground 9 and a drain material body 1 consisting of arranged reinforcement bar-like member and permeable member. The drain member 8 is fitted to the outside of the body 1 and a tubular casing 14 is disposed on the rear portion of the leading body 7 to drive the drain member 8 into the ground 9 with a vibro-hammer 13. Next, the tubular casing 14 is drawn out and the ground 9 is banked 10 to drain void water 11 in the ground 9 through the drain member 8 to a drain groove 12. Next, a cement hardening agent 16 is poured through a pouring pipe 15 provided on the drain member body 1 to build a foundation pillar after for improving the foundation. Thus, the work execution can be facilitated.

10. 发明专利

JP2007278008A Improving method for soft ground 有权
标题翻译：软土地基改进方法
公开(公告)号：JP2007278008A
公开(公告)日：2007-10-25
申请号：JP2006108254
申请日：2006-04-11
申请人： Maruyama Kogyo Kk , Ota Hideki , 丸山工業株式会社 , 太田秀樹
发明人： NAKAKUMA KAZUYOSHI
IPC分类号： E02D3/10 , E02D3/02
摘要： PROBLEM TO BE SOLVED: To provide an improving method for a soft ground capable of freely controlling a loading pressure on the ground, capable of efficiently discharging water and air contained in the soft ground surely and being effectively used even as a measure against residual-settlement in place of a bank for increasing the bearing capacity of the ground after soil improving.
SOLUTION: In the improving method for the soft ground, the top face of improving soil A is covered with airtight sheets 21 fixing sheet terminals into the peripheral sections B of the improved soil, and a decompression region separated from the improved-soil peripheral section B is made in the improving soil A by loading a vacuum pressure under the airtight sheets 21, and pore water in the improving soil A is discharged to improve the improving soil A to a hard ground. In the improving method for the soft ground, the airtight sheets 21 have a double structure composed of upper sheets 22 and lower sheets 23. In the improving method for the soft ground, a fluid is injected into openings 24 among the upper sheets 22 and lower sheets 23 under the state, in which the bulging of the upper sheets 22 of the airtight sheets 21 are suppressed, and only the lower sheets 23 are made to bulge and the improving soil A is pressed.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够自由地控制地面上的载荷压力的软地面的改进方法，能够有效地排出软土地中包含的水和空气，并有效地使用，甚至作为对抗剩余沉降代替银行，以增加土壤改良后土地的承载能力。解决方案：在软土地基的改进方法中，改良土A的顶面覆盖有密封片21，将片端子固定到改良土壤的周边部分B中，并且与改良土壤分离的减压区域周边部分B通过在气密片材21下装载真空压力而在改良土壤A中制成，并且改善土壤A中的孔隙水被排出，以将改良土壤A改善到坚硬的地面。在柔软地面的改进方法中，气密片21具有由上片22和下片23组成的双重结构。在软土地的改进方法中，将流体注入到上片22和下片22之间的开口24中能够抑制气密片21的上部片22的隆起的状态下的片23，仅使下片23隆起，并且改善土壤A被按压。版权所有（C）2008，JPO＆INPIT

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