JP4437718B2 - Improved body construction method and improved body construction equipment - Google Patents
Improved body construction method and improved body construction equipment Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims description 14
- 239000007788 liquid Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 239000004848 polyfunctional curative Substances 0.000 claims description 12
- 230000003247 decreasing effect Effects 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims 2
- 238000000034 method Methods 0.000 description 13
- 238000007726 management method Methods 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Description
本発明は、軟弱地盤の安定、地山支保、トンネル支保工、構築物の基礎、構築物の基礎補強、液状化防止、遮水用地中壁、地下水湧水防止などを目的として用いられる高圧ジェットを利用して地中に造成される改良体の形状管理方法と装置に関するものである。The present invention utilizes a high-pressure jet used for the purpose of soft ground stability, ground support, tunnel support, structure foundation, structure foundation reinforcement, liquefaction prevention, underground wall for water shielding, groundwater spring prevention, etc. Thus, the present invention relates to a shape management method and apparatus for an improved body built in the ground.
高圧ジェットを用いた従来の技術は、噴射管の先端に設けた一箇所ないしは数箇所のノズルから硬化剤を含む水の高圧ジェットを噴射しながら回転するもので、造成体の個々の形状は、円形又は半円形又は扇形に限られており、かつこれら円形又は半円形又は扇形の個々の造成体は中心から円周までの径は同一であり、複雑な形状を有する改良体を造成することはできなかった。そのため、矩形部や壁状部の造成では、円形又は半円形又は扇形の造成体を重複連接造成する方法しかなく、不経済なものであった。さらには既設地中構造物近傍部での造成については、その形状から設計上の制約も多く、適用が困難なケースも多々発生している。 The conventional technique using a high-pressure jet rotates while jetting a high-pressure jet of water containing a curing agent from one or several nozzles provided at the tip of an injection pipe. It is limited to circular, semi-circular or fan-shaped, and these circular, semi-circular or fan-shaped individual structures have the same diameter from the center to the circumference, and it is not possible to create an improved body having a complicated shape. could not. Therefore, in the creation of the rectangular part and the wall-like part, there is only a method of overlapping and forming a circular, semicircular or fan-shaped formation, which is uneconomical. Furthermore, there are many cases where it is difficult to apply the construction in the vicinity of the existing underground structure because of its shape and many design restrictions.
従来の技術では、単一のノズルから噴射されるジェット噴流を用いて造成される改良体の個々の形状は、円形又は半円形又は扇形に限られており、これら円形又は半円形又は扇形の個々の造成体は中心から円周までの径は同一であり、複雑な形状の造成体を造成することはできなかった。そのため、壁状や任意の多角形状の造成改良域については、円形又は半円形又は扇形の造成体を重複連接造成する方法しかなく、不経済なものであった。また、既設地中構造物近傍部での造成良については、その形状から設計上の制約も多く、適用が困難なケースも多々発生している。さらには、既設構造物を傷つける心配もあった。また、本出願人は特許第１９４６０３３号で四角状改良体の造成工法を開発しており、環境への影響低減、コスト低下等の効果が見込まれる壁状・四角状の改良体の造成を可能にしたが、先端装置のノズル位置を移動させるという機構から、廃材や大きな礫を含む地盤など使用に適さない対象地盤もあり、施工に制約が生じている。そのため単純な機械装置で対象地盤に影響されないで壁状や任意の多角形状など複雑な形状の造成を管理できる新しい改良体の形状管理方法が待ち望まれている。In the prior art, the individual shapes of the improvements formed using a jet jet ejected from a single nozzle are limited to circular, semicircular or fan-shaped, and these circular, semicircular or fan-shaped individual shapes are limited. The diameter of the formed body was the same from the center to the circumference, and it was impossible to form a formed body having a complicated shape. For this reason, a wall-like or arbitrary polygonal improvement area has only a method of overlapping and forming circular, semicircular or fan-shaped formations, which is uneconomical. In addition, there are many cases where it is difficult to apply the good building near the existing underground structure due to its shape and many design restrictions. Furthermore, there was a concern of damaging existing structures. In addition, the present applicant has developed a method for constructing a square-shaped improvement body in Japanese Patent No. 1946033, and it is possible to create a wall-like or square-shaped improvement body that is expected to reduce the impact on the environment and reduce costs. However, due to the mechanism of moving the nozzle position of the tip device, there are some target grounds that are not suitable for use, such as ground containing waste materials or large gravel, and there are restrictions on the construction. Therefore, there is a need for a new improved shape management method that can manage the creation of complex shapes such as wall shapes and arbitrary polygonal shapes without being affected by the target ground with a simple mechanical device.
上記課題を解決し上記目的を達成するために、本発明は、硬化剤液または硬化剤を含む水の高圧ジェットをロッド先端部のノズルより噴射しながらロッドを引き抜くか挿入することによって地中に改良体を造成する改良体造成工法において、ロッドの側面に設けられたノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながらロッドを３６０度以内の所定の角度右回転させるロッド右回転工程と、ロッドの側面に設けられたノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながらロッドを３６０度以内の所定の角度左回転させるロッド左回転工程と、を有し、ロッドを回転させて改良体を造成する範囲内において、ロッド右回転工程の所定の角度およびロッド左回転工程の所定の角度を減少させながら、ロッド右回転工程とロッド左回転工程を順次繰返し行なってロッドを揺動させ、円形以外の所定の多角形または長円形の断面形状の改良体を造成するものである。さらに、ロッド右回転工程の所定の角度およびロッド左回転工程の所定の角度を段階的に一定角度毎減少させながら、ロッド右回転工程とロッド左回転工程を順次繰返し行なって、円形以外の所定の多角形または長円形の断面形状の改良体を造成する In order to solve the above-mentioned problems and achieve the above-mentioned object, the present invention is configured to pull out or insert a rod while injecting a high-pressure jet of water containing a curing agent liquid or a curing agent from a nozzle at the tip of the rod. In the improved body construction method for creating an improved body , the rod right is rotated right by a predetermined angle of 360 degrees or less while jetting a high pressure jet of water containing a hardener liquid or hardener from a nozzle provided on the side of the rod. A rotation step, and a rod left rotation step in which the rod is rotated counterclockwise by a predetermined angle within 360 degrees while jetting a high-pressure jet of water containing a curing material liquid or a curing material from a nozzle provided on a side surface of the rod. In the range where the improved body is formed by rotating the rod, while reducing the predetermined angle of the rod right rotation process and the predetermined angle of the rod left rotation process, Head right rotation step and is performed sequentially repeated rod left rotation step to oscillate the rod, is to construct a improved having a predetermined polygonal or oval cross-sectional shape other than a circle. Further, the rod right rotation process and the rod left rotation process are sequentially repeated while decreasing the predetermined angle of the rod right rotation process and the predetermined angle of the rod left rotation process step by step by a predetermined angle. Create an improved polygon or oval cross-sectional shape
また、本発明は、硬化剤液または硬化剤を含む水の高圧ジェットをロッド先端部のノズルより噴射しながらロッドを引き抜くか挿入することによって地中に改良体を造成する改良体造成装置において、ロッドを地中に挿入または引き抜くロッド移動手段と、ロッドの側面に設けられたノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながらロッドを３６０度以内の所定の角度右回転させるロッド右回転手段と、ロッドの側面に設けられたノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながらロッドを３６０度以内の所定の角度左回転させるロッド左回転手段と、を有し、ロッド右回転手段によりロッドを右回転させる所定の角度およびロッド左回転手段によりロッドを左回転させる所定の角度を減少させながら、右回転と左回転を順次繰返し行なってロッドを揺動させる制御を行ない、円形以外の所定の多角形または長円形の断面形状の改良体を造成するものである。さらに、ロッド右回転手段の所定の角度およびロッド左回転手段の所定の角度を段階的に一定角度毎減少させながら、ロッド右回転手段とロッド左回転手段を順次繰返し行なって、円形以外の所定の多角形または長円形の断面形状の改良体を造成するものである。 Further, the present invention provides an improved body forming apparatus for forming an improved body in the ground by pulling out or inserting a rod while ejecting a high pressure jet of water containing a hardener liquid or a hardener from a nozzle at the tip of the rod. A rod moving means for inserting or extracting the rod into the ground and a high-pressure jet of water containing a hardening material liquid or a hardening material from a nozzle provided on the side surface of the rod are rotated to the right by a predetermined angle within 360 degrees. Rod right rotation means, and rod left rotation means for rotating the rod left by a predetermined angle within 360 degrees while jetting a high pressure jet of water containing a hardening material liquid or a hardening material from a nozzle provided on the side of the rod, Decrease the predetermined angle to rotate the rod to the right by the rod right rotation means and the predetermined angle to rotate the rod to the left by the rod left rotation means So while performs control to swing the rod is performed sequentially repeated right rotation and left rotation, is to construct a improved having a predetermined polygonal or oval cross-sectional shape other than a circle. Further, the rod right rotating means and the rod left rotating means are sequentially repeated while decreasing the predetermined angle of the rod right rotating means and the predetermined angle of the rod left rotating means step by step by a predetermined angle, and a predetermined non-circular shape is obtained. An improved body having a polygonal or oval cross-sectional shape is created.
本発明を、添付する図面に示す具体的な実施例に基づいて、以下詳細に説明する。 The present invention will be described in detail below based on specific embodiments shown in the accompanying drawings.
本発明に用いるロッド１は、数箇所のノズル２を有している。この数箇所には１箇所の場合も含まれる。またノズル２は、ロッド１に対して水平に設置することもあれば、垂直方向や斜め方向に設置することもある。ノズル２の径・形状及び噴射方向及び噴射圧力はそれぞれ所定または任意に設定するため、同一ロッド１上のノズル２が二箇所以上の場合は、径がすべて同一である必要はなく、個別に設定できる。またロッド１の断面形状は円形または角形いずれでもよく、ノズル２は同時に全てを使用してもよいし、任意箇所のみを使用してもよい。ノズル２を四箇所有するロッド１の例を図１に示す。 The rod 1 used in the present invention has several nozzles 2. These several places include the case of one place. The nozzle 2 may be installed horizontally with respect to the rod 1 or may be installed in a vertical direction or an oblique direction. The diameter, shape, injection direction, and injection pressure of the nozzle 2 are set in a predetermined or arbitrary manner. Therefore, when there are two or more nozzles 2 on the same rod 1, the diameters do not have to be the same and are set individually. it can. Moreover, the cross-sectional shape of the rod 1 may be either circular or square, and the nozzles 2 may be used all at the same time, or only at arbitrary locations. An example of a rod 1 having four nozzles 2 is shown in FIG.
本発明に用いる施工マシン４は、ロッド１を地中に挿入および引き抜き、かつ所定のノズル２より噴射方向と噴射時間を管理しながらと硬化剤液または硬化剤を含む水の高圧ジェットを噴射し、かつロッド１の揺動動作の方向および角度および／または繰り返し回数を管理して改良体の形状管理ができるようロッド保持揺動管理装置５を有している。また、施工マシン４には、事前に設定データが登録された記憶媒体が挿入されると読み取る記憶媒体読取装置や施工操作と管理を常時行える管理装置６を接続することもでき、施工を自動化して、データを一元管理することも出来る。施工マシン４で図１のロッド１を対象地盤３に挿入した状態の例を図２に示す。 The construction machine 4 used in the present invention inserts and pulls out the rod 1 into the ground, and jets a high pressure jet of water containing a hardener liquid or a hardener while controlling the jetting direction and jetting time from a predetermined nozzle 2. In addition, the rod holding and swinging management device 5 is provided so that the shape and shape of the improved body can be managed by managing the direction and angle of the swinging motion of the rod 1 and / or the number of repetitions. In addition, the construction machine 4 can be connected to a storage medium reading device that reads when a storage medium in which setting data is registered in advance is inserted, and a management device 6 that can always perform construction operations and management. You can also manage data centrally. An example of a state in which the rod 1 of FIG. 1 is inserted into the target ground 3 by the construction machine 4 is shown in FIG.
図３に一箇所のノズル２を用いて、改良体の造成断面形状を略ひし形に管理する例を示した。図３の略ひし形改良域７の具体的な管理方法としては、所定深度において、ノズル２から硬化材液または硬化剤を含む水の高圧ジェットを噴射しながら、６０度揺動→逆方向に５２．５度揺動→逆方向に４５度揺動→逆方向に３７．５度揺動→逆方向に３０度揺動→逆方向に２２．５度揺動→逆方向に１５度揺動→逆方向に１０．５度揺動→逆方向に６度揺動して、断面形状を略ひし形に管理することができる。 FIG. 3 shows an example in which the improved cross-sectional shape of the improved body is managed to be approximately rhombus using one nozzle 2. As a specific management method of the substantially rhombus improvement region 7 of FIG. 3, while jetting a high-pressure jet of water containing a curing material liquid or a curing agent from the nozzle 2 at a predetermined depth, the swing is 60 degrees → 52 in the reverse direction. .5 degree swing → 45 degree swing in reverse direction → 37.5 degree swing in reverse direction → 30 degree swing in reverse direction → 22.5 degree swing in reverse direction → 15 degree swing in reverse direction → The cross-sectional shape can be managed as a substantially rhombus by swinging 10.5 degrees in the reverse direction and 6 degrees in the reverse direction.
図４に図３の略ひし形改良域７を隣接して同様の管理方法で接続配置した例を示す。略ひし形を連接することによって略変形六角形の改良域８に管理することができる。また、ノズル２を６０度間隔で二箇所配置したロッド１の二箇所のノズル２を同時に使用して、図３と同様の操作を行ってもよい。さらに本発明ではまた、ノズル２を６０度間隔で六箇所配置したロッド１で六箇所のノズル２を同時に使用して図３と同様の操作をすれば、略星形の改良域という複雑な形状に管理することもできる。 FIG. 4 shows an example in which the substantially rhombus improvement areas 7 of FIG. 3 are adjacently connected by the same management method. By connecting the substantially rhombuses, it is possible to manage the improvement area 8 of a substantially deformed hexagon. Moreover, you may perform operation similar to FIG. 3 simultaneously using the nozzle 2 of the two places of the rod 1 which arrange | positioned the nozzle 2 at two places at 60 degree intervals. Further, according to the present invention, if the six nozzles 2 are simultaneously used with the rod 1 in which the nozzles 2 are arranged at six positions at intervals of 60 degrees and the same operation as in FIG. Can also be managed.
揺動動作の角度については段階的に減させてもよいし、逆に段階的に増加させても同様の改良体断面に管理することができる。また、必要とする改良体の断面形状に合わせるため、段階的な揺動角度の増減においては、複雑な形状に対応するため、所定断面で同じ揺動角度が２回以上続く場合や揺動角度の増加と減少、さらには短時間の停止を混在させて管理することがあるし、揺動動作の速度についても改良体の断面形状に合わせて複数の速度を用いる場合がある。 The angle of the swing motion may be decreased stepwise, or conversely, even if it is increased stepwise, the same improved body cross section can be managed. Also, in order to adapt to the complex shape in order to increase or decrease the swing angle stepwise to match the required cross-sectional shape of the improved body, the same swing angle continues more than once in a predetermined section or the swing angle There are cases where the increase and decrease, and even short-time stops are mixed and managed, and the speed of the swinging motion may be used in accordance with the cross-sectional shape of the improved body.
なお、本発明は、垂直方向に限らず、水平方向、また斜め方向にも利用することができるし、硬化材液または硬化剤を含む水の高圧ジェットに加えて圧縮空気を併せて噴射してもよい。硬化材液または硬化剤を含む水の高圧ジェットに替えて、繊維質を混入した硬化材液やアスファルト液を使用してもよい。 The present invention can be used not only in the vertical direction but also in the horizontal direction and in the oblique direction, and in addition to the high-pressure jet of water containing the curing material liquid or the curing agent, the compressed air is injected together. Also good. Instead of the high-pressure jet of water containing the curing material liquid or the curing agent, a curing material liquid or asphalt liquid mixed with fibers may be used.
本発明は、ロッドを回転させて改良体を造成する範囲内において、ロッド右回転工程の所定の角度およびロッド左回転工程の所定の角度を減少させながら、ロッド右回転工程とロッド左回転工程を順次繰返し行なって、円形以外の所定の多角形または長円形の断面形状の改良体を造成することができる。また、ロッド右回転工程の所定の角度およびロッド左回転工程の所定の角度を段階的に一定角度毎減少させながら、ロッド右回転工程とロッド左回転工程を順次繰返し行なって、円形以外の所定の多角形または長円形の断面形状の改良体を造成することができる。 In the present invention , the rod right rotation step and the rod left rotation step are reduced while reducing the predetermined angle of the rod right rotation step and the predetermined angle of the rod left rotation step within the range in which the rod is rotated to create the improved body. It is possible to create an improved body having a predetermined polygonal shape or oval cross-sectional shape other than a circular shape by repeatedly performing it sequentially. In addition, the rod right rotation process and the rod left rotation process are sequentially repeated while decreasing the predetermined angle of the rod right rotation process and the predetermined angle of the rod left rotation process step by step by a predetermined angle. An improved body having a polygonal or oval cross-sectional shape can be created.
また本発明は、ロッド右回転手段によりロッドを右回転させる所定の角度およびロッド左回転手段によりロッドを左回転させる所定の角度を減少させながら、右回転と左回転を順次繰返し行なって、円形以外の所定の多角形または長円形の断面形状の改良体を造成することができる。また、ロッド右回転手段の所定の角度およびロッド左回転手段の所定の角度を段階的に一定角度毎減少させながら、ロッド右回転手段とロッド左回転手段を順次繰返し行なって、円形以外の所定の多角形または長円形の断面形状の改良体を造成することができる。 Further, the present invention sequentially repeats the right rotation and the left rotation while decreasing the predetermined angle for rotating the rod to the right by the rod right rotating means and the predetermined angle for rotating the rod to the left by the rod left rotating means. An improved body having a predetermined polygonal or oval cross-sectional shape can be created. Further, the rod right rotating means and the rod left rotating means are sequentially repeated while decreasing the predetermined angle of the rod right rotating means and the predetermined angle of the rod left rotating means step by step by a predetermined angle, and a predetermined non-circular shape is obtained. An improved body having a polygonal or oval cross-sectional shape can be created.
１…ロッド
２…ノズル
３…対象地盤
４…施工マシン
５…ロッド保持揺動管理装置
６…管理装置
７…略ひし形改良域
８…略変形六角形の改良域DESCRIPTION OF SYMBOLS 1 ... Rod 2 ... Nozzle 3 ... Target ground 4 ... Construction machine 5 ... Rod holding | maintenance fluctuation | variation management apparatus 6 ... Management apparatus 7 ... Substantially rhombus improvement area | region 8 ... Improvement area | region of a substantially deformation | transformation hexagon
Claims (4)
前記ロッドの側面に設けられた前記ノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながら前記ロッドを３６０度以内の所定の角度右回転させるロッド右回転工程と、
前記ロッドの側面に設けられた前記ノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながら前記ロッドを３６０度以内の所定の角度左回転させるロッド左回転工程と、を有し、
前記ロッドを回転させて改良体を造成する範囲内において、前記ロッド右回転工程の所定の角度および前記ロッド左回転工程の所定の角度を減少させながら、前記ロッド右回転工程と前記ロッド左回転工程を順次繰返し行なって前記ロッドを揺動させ、円形以外の所定の多角形または長円形の断面形状の改良体を造成することを特徴とする改良体造成工法。 In the improved body construction method of creating an improved body in the ground by pulling out or inserting the rod while jetting a high pressure jet of water containing a hardener liquid or hardener from the nozzle at the tip of the rod,
A rod right rotation step of rotating the rod to the right by a predetermined angle of 360 degrees or less while jetting a high-pressure jet of water containing a hardener liquid or a hardener from the nozzle provided on the side surface of the rod;
A rod left rotation step of rotating the rod counterclockwise by a predetermined angle within 360 degrees while spraying a high pressure jet of water containing a curing material liquid or a curing material from the nozzle provided on the side surface of the rod;
The rod right rotation step and the rod left rotation step are performed while the predetermined angle of the rod right rotation step and the predetermined angle of the rod left rotation step are decreased within the range in which the rod is rotated to form the improved body. sequentially oscillating the rod is performed repeatedly, improved body Construction method characterized by reclamation improvement of predetermined polygonal or oval cross-sectional shape other than a circle.
前記ロッドを地中に挿入または引き抜くロッド移動手段と、
前記ロッドの側面に設けられた前記ノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながら前記ロッドを３６０度以内の所定の角度右回転させるロッド右回転手段と、
前記ロッドの側面に設けられた前記ノズルから硬化材液または硬化材を含む水の高圧ジェットを噴射させながら前記ロッドを３６０度以内の所定の角度左回転させるロッド左回転手段と、を有し、
前記ロッド右回転手段により前記ロッドを右回転させる所定の角度および前記ロッド左回転手段により前記ロッドを左回転させる所定の角度を減少させながら、右回転と左回転を順次繰返し行なって前記ロッドを揺動させる制御を行ない、円形以外の所定の多角形または長円形の断面形状の改良体を造成することを特徴とする改良体造成装置。 In an improved body creation device for creating an improved body in the ground by pulling out or inserting a rod while jetting a high-pressure jet of water containing a hardener liquid or a hardener from the nozzle at the tip of the rod,
Rod moving means for inserting or withdrawing the rod into the ground;
A rod right rotating means for rotating the rod to the right by a predetermined angle of 360 degrees or less while ejecting a high pressure jet of water containing a curing material liquid or a curing material from the nozzle provided on the side surface of the rod;
Rod left rotating means for rotating the rod to the left by a predetermined angle within 360 degrees while spraying a high pressure jet of water containing a curing material liquid or a curing material from the nozzle provided on the side surface of the rod;
While decreasing the predetermined angle for rotating the rod to the right by the rod right rotating means and the predetermined angle for rotating the rod to the left by the rod left rotating means, the right and left rotations are sequentially repeated to swing the rod. An improved body creation device characterized by performing control to move and creating an improved body having a predetermined polygonal or oval cross-sectional shape other than a circular shape .
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| JP5457588B1 (en) * | 2013-06-04 | 2014-04-02 | 浩子 松本 | Improvement area creation method |
| JP6440934B2 (en) * | 2013-12-06 | 2018-12-19 | 株式会社不動テトラ | Ground improvement method by high-pressure jet stirring method |
| JP6320795B2 (en) * | 2014-02-28 | 2018-05-09 | 前田建設工業株式会社 | Method for forming ground improvement body |
| JP2016020565A (en) * | 2014-07-12 | 2016-02-04 | 前田建設工業株式会社 | Formation method of ground improvement body |
| JP7164378B2 (en) * | 2018-09-26 | 2022-11-01 | 株式会社不動テトラ | ground improvement method |
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