JP2013227788A - Method for installing underground diagonal member - Google Patents

Method for installing underground diagonal member Download PDF

Info

Publication number
JP2013227788A
JP2013227788A JP2012100705A JP2012100705A JP2013227788A JP 2013227788 A JP2013227788 A JP 2013227788A JP 2012100705 A JP2012100705 A JP 2012100705A JP 2012100705 A JP2012100705 A JP 2012100705A JP 2013227788 A JP2013227788 A JP 2013227788A
Authority
JP
Japan
Prior art keywords
ground
wire rope
diagonal
steel pipe
tip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2012100705A
Other languages
Japanese (ja)
Other versions
JP5887193B2 (en
Inventor
Hajime Fujino
一 藤野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Forestry Co Ltd
Original Assignee
Sumitomo Forestry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Forestry Co Ltd filed Critical Sumitomo Forestry Co Ltd
Priority to JP2012100705A priority Critical patent/JP5887193B2/en
Publication of JP2013227788A publication Critical patent/JP2013227788A/en
Application granted granted Critical
Publication of JP5887193B2 publication Critical patent/JP5887193B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Foundations (AREA)

Abstract

PROBLEM TO BE SOLVED: To install an underground diagonal member, of which tip is joined to another structure in underground and which is obliquely supported, without excavating to a position where the tip is joined to the other structure.SOLUTION: A steel pipe pile 1 having an axis line downward from the vicinity of a ground surface is installed in underground. The tip of a wire rope 34 is connected to the steel pipe pile at a position of a prescribed depth. After the steel pipe pile is installed, the wire rope which is extracted along the steel pipe pile up to the ground surface is inserted from the tip side of a pipe member 2a into its inside, and the pipe member is made to penetrate obliquely downward from the ground surface into the underground, with the tip being directed to a connection part of the steel pipe pile and the wire rope. The wire rope is pulled from the rear side of the pipe member, is made to bite into the ground, and is brought into a straight line. The pipe member repeats reciprocating movement in the axis line direction, and adjusts the position of the pipe member in which the wire rope is inserted. The pipe member is joined to a diagonal member receiving part 11 provided at a position of the steel pipe pile where the tip of the wire rope is joined to it, thus providing an underground diagonal member.

Description

本発明は、地中に構築される構造体の一部として斜め方向に地中斜材を設置する方法に係り、特に下端が他の構造部材に接合される地中斜材の設置方法に関するものである。   TECHNICAL FIELD The present invention relates to a method of installing an underground oblique member in an oblique direction as a part of a structure constructed in the ground, and more particularly to an installation method of an underground oblique member whose lower end is joined to another structural member. It is.

地中に形成される構造体として、杭、地下連続壁体、ケーソン等が知られている。このような地下の構造体は、地上の構造物を支持するため、地盤を強化するため、地盤の液状化を抑制するため、又は地下水の流れを制御するため等の目的で構築される。   As structures formed in the ground, piles, underground continuous walls, caissons, and the like are known. Such an underground structure is constructed for the purpose of supporting a structure on the ground, strengthening the ground, suppressing liquefaction of the ground, or controlling the flow of groundwater.

このような地中構造体のうち、鋼管、形鋼、プレキャストコンクリート等からなる既製の部材を用いる地下連続壁体は、地表面上から連続する位置に複数の既製部材を順次に地中に貫入して連続する壁体とするのが一般的となっている。つまり、地中において他の構造部材と接合するようなことは通常行われていない。
また、既製の部材を地中に打ち込んだり、圧入したりして形成される杭は、所定の間隔で複数を設置し、これらの頭部で構造物等を支持するものが一般的に採用されている。すなわち、それぞれの杭は、地上の構造物を支持する頭部より下側は地中においてそれぞれ独立しており、これらを互いに接合するようなことは行われていない。地表面から地中に打設又は圧入した部材を地中において他の部材と接合するためには、一般に接合位置まで掘削し、接合後に埋め戻す工程を経ることになる。 Among such underground structures, underground continuous wall bodies using ready-made members made of steel pipes, shaped steel, precast concrete, etc., penetrate multiple pre-made members sequentially into the ground at consecutive positions from the ground surface. In general, it is a continuous wall body. That is, joining with other structural members in the ground is not usually performed.
In addition, piles that are formed by driving off-the-shelf members into the ground or press-fitting are generally used in which a plurality of piles are installed at predetermined intervals, and structures and the like are supported by these heads. ing. That is, the piles are independent from each other in the ground below the head that supports the structure on the ground, and they are not joined to each other. In order to join a member placed or press-fitted into the ground from the ground surface with other members in the ground, generally, a process of excavating to a joining position and backfilling after joining is performed.

例えば、特許文献１又は特許文献２に記載されている構造体は、斜めに配置される部材を含む型鋼等の複数の部材を予め接合して組み立てておき、地盤を掘削した溝内に設置した後、埋め戻すことによって形成されている。   For example, the structure described in Patent Document 1 or Patent Document 2 is assembled by previously joining and assembling a plurality of members such as steel shapes including members arranged obliquely, and installed in a groove excavated in the ground Later, it is formed by backfilling.

特開平６−５７７３８号公報Japanese Patent Laid-Open No. 6-57738 特開２０１１−４２９９２号公報JP 2011-42992 A

上記従来例のように、型鋼等の既製の部材が地中において他の部材に接合された構造体を形成するのに、接合位置まで予め掘削して埋め戻すものとすれば、費用が多大になるとともに多くの作業が必要となる。
しかし、地上から斜め下方の地中に軸線を有する部材の先端部を他の部材に接合することができれば、地表面上における広い範囲の荷重を基礎杭、ケーソン等に集中して負担させることが容易となる。また、地中に設けられた複数の杭や鋼矢板を斜め方向の部材で結合して、複数の杭又は鋼矢板の相互間の変位を有効に拘束することも容易に行うことが可能となる。 As in the above-described conventional example, when a ready-made member such as a steel plate is formed in the ground to form a structure joined to another member, if it is excavated and backfilled to the joining position in advance, the cost is very high. A lot of work is needed.
However, if the tip of a member having an axis line in the ground obliquely below the ground can be joined to another member, a wide range of loads on the ground surface can be concentrated on the foundation pile, caisson, etc. It becomes easy. Moreover, it becomes possible to easily restrain the displacement between the plurality of piles or steel sheet piles by connecting the plurality of piles and steel sheet piles provided in the ground with members in an oblique direction. .

本発明は、上記のような事情に鑑みてなされたものであり、その目的は、地表面から地中に貫入した部材の先端を地中で他の部材に接合して斜め方向に設置することができる地中斜材の設置方法を提供することである。   This invention is made | formed in view of the above situations, The objective is joining the front-end | tip of the member penetrate | invaded into the ground from the ground surface in the ground, and installing in the diagonal direction. It is to provide a method for installing underground diagonal materials.

上記課題を解決するために、請求項１に記載の発明は、 地表面又は地表面付近から下方に軸線を有し、地表面から所定の深さの位置にワイヤロープの先端部が結合された主部材を地中に設置する工程と、 前記ワイヤロープの後方部分を管部材の先端側から内側に挿通し、該管部材の先端を前記主部材と前記ワイヤロープとの結合位置に向けて該管部材を地中に貫入する工程と、 前記ワイヤロープを前記管部材の後方側から牽引するとともに、前記管部材を軸線方向に繰り返し往復移動し、又は該管部材に装着された部材を該管部材の軸線方向に繰り返し往復移動して、前記ワイヤロープが挿通された前記管部材の位置を調整する工程と、 前記ワイヤロープをガイドとし、前記主部材の前記ワイヤロープとの結合位置に設けられた斜材受け部に、前記管部材の先端を接合して地中斜材とする工程と、を有する地中斜材の設置方法を提供する。   In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that an axis line is formed downward from the ground surface or the vicinity of the ground surface, and the tip end portion of the wire rope is coupled at a predetermined depth from the ground surface. A step of installing the main member in the ground; and a rear portion of the wire rope is inserted inward from the distal end side of the tube member, and the distal end of the tube member is directed toward a coupling position of the main member and the wire rope. A step of penetrating the pipe member into the ground, and pulling the wire rope from the rear side of the pipe member, and reciprocatingly moving the pipe member in the axial direction, or removing the member attached to the pipe member A step of repeatedly reciprocating in the axial direction of the member to adjust the position of the tube member through which the wire rope is inserted, and the wire rope is used as a guide, and the main member is provided at a coupling position with the wire rope. Diagonal material receptacle In part, to provide a method of installing underground diagonal members having the steps of the underground slant member by joining the leading end of the tube member.

この方法では、主部材は所定の深さの位置にワイヤロープの先端部が結合された状態で地中に設置され、ワイヤロープは主部材に沿って地表面上まで配置することができる。このワイヤロープを管部材に挿通して牽引することにより、地中に貫入した管部材をワイヤロープに案内させて往復移動し、管部材の位置を調整することができる。そして、管部材を主部材の所定の深さの位置に突き当てるように接合することができる。したがって、地盤を大きく掘削することなく、上記管部材を主部材の所定の深さに接合して、地表面近くから主部材に軸力を伝達することができる地中斜材とすることができる。   In this method, the main member is installed in the ground with the tip of the wire rope coupled to a position at a predetermined depth, and the wire rope can be disposed on the ground surface along the main member. By inserting and pulling the wire rope through the pipe member, the pipe member penetrating into the ground is guided by the wire rope to reciprocate to adjust the position of the pipe member. And it can join so that a pipe member may be faced to the position of the predetermined depth of a main member. Therefore, it is possible to connect the pipe member to a predetermined depth of the main member without greatly excavating the ground, and to obtain an underground oblique material that can transmit axial force to the main member from near the ground surface. .

請求項２に係る発明は、請求項１に記載の地中斜材の設置方法において、 前記管部材を地中に貫入する工程は、 前記ワイヤロープを、前記主部材との結合位置から該主部材に沿って地表面に至り地表面に沿って該主部材から離れた位置まで配置して、さらに後方部分を前記管部材の先端側から内側に挿通し、 前記主部材と離れた位置から前記管部材の先端を斜め下方に向けて該管部材を地中に貫入するとともに、前記ワイヤロープを該管部材の後方側から牽引し、 該ワイヤロープを地表面及び前記主部材に沿った位置から地中にくい込ませて、前記ワイヤロープと前記主部材との結合位置と前記管部材の先端とを結ぶ線上へ該ワイヤロープを近づける工程を含むものとする。   The invention according to claim 2 is the installation method of the underground diagonal member according to claim 1, wherein the step of penetrating the pipe member into the ground includes the wire rope from the position where the main member is joined to the main rope. It is arranged to reach the ground surface along the member and away from the main member along the ground surface, and further, the rear portion is inserted inward from the distal end side of the pipe member, and from the position away from the main member, The tube member is penetrated into the ground with the tip of the tube member directed obliquely downward, the wire rope is pulled from the rear side of the tube member, and the wire rope is pulled from a position along the ground surface and the main member. It is assumed that the method includes a step of bringing the wire rope closer to a line connecting the connecting position of the wire rope and the main member and the tip of the tube member by being inserted into the ground.

この方法では、管部材を斜め下方の地中へ貫入し、管部材に挿通されたワイヤロープを牽引することによって、ワイヤロープが主部材に沿った位置及び地表面に沿った位置から地盤中に食い込み、主部材に結合された位置から管部材の先端に向かう直線に近づく。地中に貫入した管部材は、ワイヤロープが主部材に結合された位置に向かって正確に貫入することは難しいが、ワイヤロープを牽引しながら管部材を軸線方向に往復移動させることにより、ワイヤロープをガイドとして管部材の位置を修正し、管部材の先端をワイヤロープが結合された位置に近づけることができる。そして、管部材の先端を主部材の所定の深さの位置に突き当てて接合し、管部材の軸力を主部材に伝達することが可能となる。   In this method, the pipe member penetrates into the ground obliquely below and pulls the wire rope inserted through the pipe member, so that the wire rope enters the ground from the position along the main member and the position along the ground surface. It bites in and approaches a straight line from the position coupled to the main member toward the tip of the pipe member. Although it is difficult for the pipe member that has penetrated into the ground to accurately penetrate the wire rope toward the position where the wire rope is coupled to the main member, the pipe member is reciprocated in the axial direction while pulling the wire rope. The position of the tube member can be corrected using the rope as a guide, and the tip of the tube member can be brought close to the position where the wire rope is coupled. Then, it is possible to transmit the axial force of the pipe member to the main member by abutting and joining the tip of the pipe member to the position of the predetermined depth of the main member.

請求項３に係る発明は、請求項２に記載の地中斜材の設置方法において、 前記管部材を地中に貫入する工程は、前記管部材の後端部から注水し、該管部材の先端付近の地盤中に供給する工程を含むものとする。   The invention according to claim 3 is the installation method of the underground diagonal member according to claim 2, wherein the step of penetrating the pipe member into the ground is made by pouring water from a rear end portion of the pipe member. It shall include the process of supplying into the ground near the tip.

この方法では、管部材の先端付近の地中に水を供給することにより、地中の間隙水圧が上昇し、土粒子が移動し易くなって管部材を貫入することが容易となる。   In this method, by supplying water into the ground near the tip of the pipe member, the pore water pressure in the ground rises, so that the soil particles can easily move and penetrate the pipe member.

請求項４に係る発明は、請求項１に記載の地中斜材の設置方法において、 前記管部材を地中に貫入する工程は、前記主部材の所定位置に先端部が結合されたワイヤロープを前記管部材の先端側から内側に挿通し、該管部材は先端を下方に向けて前記主部材に沿った位置に支持して、前記主部材を地中に設置する工程と同時に行うものとし、 前記管部材の位置を調整する工程は、該管部材を該管部材の軸線方向に繰り返し往復移動することによって地盤を削り、前記管部材を前記主部材に沿った位置から徐々に傾斜角が変化するように移動させるものとする。   According to a fourth aspect of the present invention, in the method for installing the underground diagonal member according to the first aspect, the step of penetrating the pipe member into the ground includes a wire rope having a tip portion coupled to a predetermined position of the main member. The pipe member is inserted inward from the distal end side of the pipe member, the pipe member is supported at a position along the main member with the distal end facing downward, and is performed simultaneously with the step of installing the main member in the ground. In the step of adjusting the position of the pipe member, the ground is shaved by repeatedly reciprocating the pipe member in the axial direction of the pipe member, and the inclination angle of the pipe member gradually increases from the position along the main member. It shall be moved to change.

この方法では、管部材を主部材に沿った位置に支持した状態として主部材を地中に貫入するので、管部材を主部材とともに地中に貫入することができる。そして、管部材に挿通したワイヤロープを牽引した状態で該ワイヤロープをガイドとし、管部材を軸線方向に往復移動することによって地盤を削り、管部材の傾斜を変化させて行くことができる。したがって、管部材は先端が所定の深さの位置で主部材に突き当てるように接合されるとともに所定の傾きとなった地中斜材とすることができる。   In this method, since the main member penetrates into the ground with the pipe member supported at a position along the main member, the pipe member can penetrate into the ground together with the main member. Then, with the wire rope inserted through the pipe member being pulled, the wire rope is used as a guide, and the pipe member is reciprocated in the axial direction to scrape the ground and change the inclination of the pipe member. Therefore, the pipe member can be an underground slant that is joined so that the tip thereof abuts the main member at a predetermined depth and has a predetermined inclination.

請求項５に係る発明は、請求項４に記載の地中斜材の設置方法において、 前記管部材の外周面の周方向における限定された範囲に、該管部材の軸線方向への往復移動によって地盤を切削する切削部を形成しておくものとする。   According to a fifth aspect of the present invention, in the method for installing the underground diagonal member according to the fourth aspect, the pipe member is reciprocated in the axial direction within a limited range in the circumferential direction of the outer peripheral surface of the pipe member. A cutting part for cutting the ground shall be formed.

この方法では、管部材に設けられた切削部によって地盤を削り、管部材の位置をその軸線が移動するように調整することが容易となる。また、切削部を周方向の限定された範囲に設けておくことにより、管部材を軸線回りに回転させ、切削部の位置を変更することにより、管部材の位置を調整するときの方向を制御することが可能となる。   In this method, the ground is cut by the cutting portion provided in the pipe member, and the position of the pipe member can be easily adjusted so that the axis moves. In addition, by setting the cutting part in a limited range in the circumferential direction, the pipe member is rotated around the axis, and the position of the pipe member is adjusted by changing the position of the cutting part. It becomes possible to do.

請求項６に係る発明は、請求項１に記載の地中斜材の設置方法において、 前記管部材を地中に貫入する工程は、前記主部材の所定位置に先端部が結合されたワイヤロープを前記管部材の先端側から内側に挿通し、該管部材は先端を下方に向けて前記主部材に沿った位置に支持して、前記主部材を地中に設置する工程と同時に行うものとし、 前記管部材の位置を調整する工程は、前記管部材の外側に切削部材を装着し、該切削部材を前記管部材の軸線方向に繰り返し往復移動することによって地盤を削り、前記管部材を前記主部材に沿った位置から徐々に傾斜角が変化するように移動させるものとし、 前記切削部材は、前記管部材の外側の全周又は周方向の一部を囲むように嵌め合わされ、周方向における限定された範囲に、該管部材の軸線方向への往復移動によって地盤を切削する切削部を備えるものとする。   According to a sixth aspect of the present invention, in the method for installing the underground diagonal member according to the first aspect, the step of penetrating the pipe member into the ground is a wire rope having a tip portion coupled to a predetermined position of the main member. The pipe member is inserted inward from the distal end side of the pipe member, the pipe member is supported at a position along the main member with the distal end facing downward, and is performed simultaneously with the step of installing the main member in the ground. The step of adjusting the position of the tube member includes mounting a cutting member on the outside of the tube member, scraping the ground by repeatedly reciprocating the cutting member in the axial direction of the tube member, and removing the tube member from the tube member. It is assumed that the inclination angle gradually changes from a position along the main member, and the cutting member is fitted so as to surround the entire outer periphery or a part of the circumferential direction of the pipe member, and in the circumferential direction. In a limited range, the shaft of the tube member It shall comprise a cutting unit for cutting the ground by the reciprocating movement in the direction.

この方法では、管部材に嵌め合わせた切削部材を管部材の軸線方向に往復移動することによって管部材の軸線の位置を調整することが容易となる。また、管部材を所定の位置に調整した後は、地上に切削部材を引き抜き、他の管部材を貫入して位置を調整するのに転用することができる。これにより、複数の管部材を地中で斜め方向に設置するときに、全ての管部材に切削部を設ける必要がなく、部材の加工費用を低減することが可能となる。   In this method, it becomes easy to adjust the position of the axis of the pipe member by reciprocating the cutting member fitted to the pipe member in the axial direction of the pipe member. Moreover, after adjusting a pipe member to a predetermined position, a cutting member can be pulled out on the ground, and can be diverted for adjusting a position by penetrating another pipe member. Thereby, when installing a some pipe member in the diagonal direction in the ground, it is not necessary to provide a cutting part in all the pipe members, and it becomes possible to reduce the processing cost of a member.

以上説明したように、本発明に係る地中斜材の設置方法では、先端が他の構造体と地中で接合されて斜めに支持される地中斜材を、他の構造体と接合する位置まで掘削することなく設置することができ、作業の効率が向上し、工事費用を低減することが可能となる。   As described above, in the underground slant installation method according to the present invention, the underground slant that is supported obliquely with the tip joined to the other structure in the ground is joined to the other structure. It can be installed without excavating to the position, so that the work efficiency can be improved and the construction cost can be reduced.

本発明に係る方法で設置することができる地中斜材の一例を示す概略断面図である。It is a schematic sectional drawing which shows an example of the underground slanting material which can be installed by the method which concerns on this invention. 図１に示す地中斜材の下端を主部材に接合する構造の一例を示す部分断面図である。It is a fragmentary sectional view which shows an example of the structure which joins the lower end of the underground oblique material shown in FIG. 1 to the main member. 本発明の一実施形態である方法で地中斜材を設置する工程を示す概略図である。It is the schematic which shows the process of installing an underground diagonal with the method which is one Embodiment of this invention. 本発明の一実施形態である方法で地中斜材を設置する工程を示す概略図である。It is the schematic which shows the process of installing an underground diagonal with the method which is one Embodiment of this invention. 本発明に係る方法においてワイヤロープを主部材に結合する構造の一例を示す断面図である。It is sectional drawing which shows an example of the structure which couple | bonds a wire rope with the main member in the method which concerns on this invention. 管部材を地中へ斜め方向に貫入する状態の一例を示す概略図である。It is the schematic which shows an example of the state which penetrates a pipe member in the diagonal direction in the ground. ワイヤロープが内側に挿通された管部材の先端部分を示す側面図及び断面図である。It is the side view and sectional drawing which show the front-end | tip part of the pipe member by which the wire rope was penetrated inside. 本発明の他の実施形態である方法で地中斜材を設置する工程を示す概略図である。It is the schematic which shows the process of installing an underground oblique material by the method which is other embodiment of this invention. 本発明の他の実施形態である方法で地中斜材を設置する工程を示す概略図である。It is the schematic which shows the process of installing an underground oblique material by the method which is other embodiment of this invention. 図８及び図９に示す方法において、主部材である鋼管杭を地中に貫入するときに管部材を主部材に支持させた状態を示す断面図である。In the method shown in FIG.8 and FIG.9, when the steel pipe pile which is a main member penetrates in the ground, it is sectional drawing which shows the state which supported the pipe member on the main member. 切削部材を用いて地中に貫入するときの管部材の先端部分を示す側面図及び断面図である。It is the side view and sectional drawing which show the front-end | tip part of a pipe member when penetrating into the ground using a cutting member. 本発明に係る方法で設置することができる地中斜材の他の例を示す概略断面図である。It is a schematic sectional drawing which shows the other example of the underground diagonal material which can be installed by the method which concerns on this invention.

以下、本発明の実施の形態を図に基づいて説明する。
図１は、本発明に係る方法で設置することができる地中斜材を含む地中構造体の一例を示す概略断面図である。
この地中構造体は、擁壁４の背面土５の上に構築された建築物６の荷重を支持するものであり、背面土５の上に荷重が載荷されたときにも擁壁４の安定性を維持するために設置されたものである。この地中構造体は、主部材である鋼管杭１と、この鋼管杭１の側面に下端が接合され、斜め方向に設置された地中斜材２と、鋼管杭１の上端部と地中斜材２の上端部とを連結する水平連結部材３とを備えている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view showing an example of an underground structure including an underground oblique material that can be installed by the method according to the present invention.
This underground structure supports the load of the building 6 constructed on the back soil 5 of the retaining wall 4, and also when the load is loaded on the back soil 5, It was installed to maintain stability. The underground structure includes a steel pipe pile 1 as a main member, an underground slope 2 in which a lower end is joined to a side surface of the steel pipe pile 1 and installed in an oblique direction, an upper end portion of the steel pipe pile 1 and an underground A horizontal connecting member 3 that connects the upper end of the diagonal member 2 is provided.

上記鋼管杭１は、既存の方法によって地中に設置入されたものであり、充分な支持力が得られる強固な層に下端が到達する深さまで貫入されている。
上記地中斜材２は、鋼管からなるものであり、下端部は上記鋼管杭１の所定の深さの位置に接合されており、上端部はほぼ地表面近くで水平連結部材３に接合されている。
上記水平連結部材３は、形鋼からなるものであり、一端が鋼管杭１の上端面に載せ架けるように支持され、溶接等によって鋼管杭１の頂部と接合されている。また、他端は地中斜材２の上端部と溶接等によって接合されている。したがって、水平連結部材３上に作用する荷重は、鋼管杭１及び地中斜材２に支持されるとともに、地中斜材２の上端部に作用した鉛直方向の荷重は、地中斜材２の軸方向の力となって下端部から鋼管杭１に伝達される。そして、水平連結部材３から鋼管杭１の上端部に伝達された鉛直方向の力とともに鋼管杭１から支持地盤に伝達され、支持される。 The steel pipe pile 1 is installed in the ground by an existing method, and is penetrated to a depth at which the lower end reaches a strong layer capable of obtaining a sufficient supporting force.
The underground diagonal member 2 is made of a steel pipe, the lower end is joined to a predetermined depth of the steel pipe pile 1, and the upper end is joined to the horizontal connecting member 3 substantially near the ground surface. ing.
The horizontal connecting member 3 is made of section steel, is supported so that one end can be placed on the upper end surface of the steel pipe pile 1, and is joined to the top of the steel pipe pile 1 by welding or the like. The other end is joined to the upper end portion of the underground diagonal member 2 by welding or the like. Therefore, the load acting on the horizontal connecting member 3 is supported by the steel pipe pile 1 and the underground diagonal member 2, and the vertical load acting on the upper end portion of the underground diagonal member 2 is the underground diagonal member 2. Is transmitted from the lower end to the steel pipe pile 1. And with the force of the perpendicular direction transmitted to the upper end part of the steel pipe pile 1 from the horizontal connection member 3, it is transmitted to the support ground from the steel pipe pile 1, and is supported.

上記地中斜材２の下端部が鋼管杭１の所定の深さの位置に接合される構造は、図２に示すように、鋼管杭１の外周面から側方に突き出した斜材受け部１１によって支持されるものとなっており、この斜材受け部１１は地中斜材２の下端部に装着される斜材接合部１２と回動軸１３によって連結されている。   The structure in which the lower end portion of the underground diagonal member 2 is joined to the position of the predetermined depth of the steel pipe pile 1 is as shown in FIG. 2, the diagonal member receiving portion protruding sideways from the outer peripheral surface of the steel pipe pile 1. The diagonal material receiving portion 11 is connected to the diagonal material joining portion 12 attached to the lower end portion of the underground diagonal material 2 by a rotating shaft 13.

上記斜材受け部１１は、鋼管杭の側面に溶接によって接合された鉛直方向の板材からなる２つの鉛直板部１１ａと、これらの鉛直板部１１ａを連結する傾斜板部１１ｂとからなるものである。鉛直板部１１ａは、下端から上方にかけて徐々に張り出し長を拡大する形状となっており、下端から斜め上方へと傾斜した辺に傾斜板部１１ｂとなる鋼板が溶接によって接合されている。したがって傾斜板部１１ｂは、平行に支持された２つの鉛直板部１１ａ間の下側を傾斜した面で覆うものとなっている。また、鉛直板部１１ａには開口が設けられており、斜材接合部１２と連結するための回動軸１３がこの開口に挿通され、２つの鉛直板部１１ａ間に架け渡されている。   The diagonal member receiving portion 11 is composed of two vertical plate portions 11a made of a vertical plate member joined to the side surface of the steel pipe pile by welding, and an inclined plate portion 11b connecting the vertical plate portions 11a. is there. The vertical plate portion 11a has a shape that gradually extends from the lower end to the upper side, and a steel plate that forms the inclined plate portion 11b is joined to a side inclined obliquely upward from the lower end by welding. Therefore, the inclined plate portion 11b covers the lower side between the two vertical plate portions 11a supported in parallel with an inclined surface. In addition, an opening is provided in the vertical plate portion 11a, and a rotation shaft 13 for connecting to the diagonal member joining portion 12 is inserted through the opening and spanned between the two vertical plate portions 11a.

上記斜材接合部１２は、地中斜材２を構成する斜材用の鋼管の下端面に突き当てられる当接板１２ａと、この当接板１２ａの上面から上方に突き出した斜材案内部１２ｂと、上記当接板１２ａの下面から下方に突き出した連結板１２ｃとを有するものである。
当接板１２ａは鋼板を２枚重ね合わせたものとなっており、それぞれの鋼板には中央部に開口１２ｄが設けられ、この開口１２ｄにはワイヤロープ１４が挿通されている。そして、このワイヤロープ１４の端部には定着部材１４ａが固着され、上記開口１２ｄの周囲に定着部材１４ａが係止されている。これにより、ワイヤロープ１４は斜材接合部１２及び斜材受け部１１を介して鋼管杭１に結合されている。 The diagonal joint 12 includes an abutment plate 12a that is abutted against the lower end surface of an oblique steel pipe constituting the underground oblique material 2, and an oblique material guide that projects upward from the upper surface of the abutment plate 12a. 12b and a connecting plate 12c protruding downward from the lower surface of the contact plate 12a.
The contact plate 12a is a laminate of two steel plates. Each steel plate has an opening 12d at the center, and a wire rope 14 is inserted through the opening 12d. A fixing member 14a is fixed to the end of the wire rope 14, and the fixing member 14a is locked around the opening 12d. As a result, the wire rope 14 is coupled to the steel pipe pile 1 via the diagonal member joining portion 12 and the diagonal member receiving portion 11.

上記連結板１２ｃは、当接板１２ａの下面から互いに平行に突き出した２枚の鋼板からなるものであり、これらの連結板１２ｃには回動軸１３を挿通することができる開口が設けられている。これらの開口には、２つの鉛直板部１１ａ間に架け渡された回動軸１３が挿通され、斜材接合部１２が回動軸１３を介して斜材受け部１１と回動が可能に接合されている。   The connecting plate 12c is composed of two steel plates protruding in parallel from the lower surface of the contact plate 12a. The connecting plate 12c is provided with an opening through which the rotating shaft 13 can be inserted. Yes. A rotation shaft 13 spanned between the two vertical plate portions 11 a is inserted into these openings so that the oblique material joint portion 12 can rotate with the oblique material receiving portion 11 via the rotation shaft 13. It is joined.

上記斜材案内部１２ｂは、当接板１２ａの上側の鋼板の上面から上方に突き出すように設けられて管状となっており、外径が地中斜材２となる管部材すなわち斜材用鋼管の内側に挿入することができる大きさに設定されている。そして、先端部は外径が縮小され、管部材の内側に容易に挿入することができるものとなっている。また、この中空となった斜材案内部１２ｂの中心部は、ワイヤロープ１４を挿通して該ワイヤロープ１４の先端部を当接板１２ａに係止することできるものである。したがって、地表面から牽引されたワイヤロープ１４に案内させて管部材である斜材用鋼管を上記斜材案内部１２ｂに嵌め合わせ、さらにこの斜材案内部１２ｂに案内させて当接板１２ａに端面を当接して、図２に示すように地中斜材２を鋼管杭１と接合するものとなっている。
なお、本実施の形態では、上記管部材として用いる斜材用鋼管は、鋼管杭１より径の小さいものを用いている。 The diagonal material guide part 12b is provided so as to protrude upward from the upper surface of the steel plate on the upper side of the contact plate 12a, has a tubular shape, and has an outer diameter of the underground diagonal material 2, that is, a steel pipe for diagonal material. It is set to a size that can be inserted inside. And the outer diameter of the tip is reduced, and it can be easily inserted inside the tube member. Further, the hollow center portion of the oblique material guide portion 12b can be inserted through the wire rope 14 and the tip end portion of the wire rope 14 can be locked to the contact plate 12a. Therefore, the diagonal steel pipe, which is a pipe member, is guided by the wire rope 14 pulled from the ground surface, and is fitted to the diagonal guide 12b, and is further guided by the diagonal guide 12b to the contact plate 12a. The end surface is brought into contact, and the underground diagonal member 2 is joined to the steel pipe pile 1 as shown in FIG.
In the present embodiment, the diagonal steel pipe used as the pipe member is smaller in diameter than the steel pipe pile 1.

次に、上記地中構造体を設置する方法を、図３及び図４に基づいて説明する。
上記地中構造体の主部材である鋼管杭１を最初に地中に貫入する。この鋼管杭１は、頭部を打撃して地中に打ち込む方法、振動を付与しながら圧入する方法、鋼管内から先端部分の地盤を掘削しながら圧入する方法等、既存の方法を採用することができる。
上記鋼管杭１の地中斜材２が接合される位置には、図３（ａ）に示すように予め斜材受け部１１と、これに連結された斜材接合部１２を取り付けておく。そして、斜材接合部１２にはワイヤロープ１４の先端を係止しておく。斜材接合部１２は、図５に示すように、回動軸１３の軸線回りに回転させ、ワイヤロープ１４を鋼管杭１の外周面に接近させておき、ワイヤロープ１４は鋼管杭１に沿って上方に支持しておく。このような状態で鋼管杭１を地中に貫入し、ワイヤロープ１４は鋼管杭１に沿って地表面まで引き出された状態とする。 Next, a method for installing the underground structure will be described with reference to FIGS.
The steel pipe pile 1 which is the main member of the underground structure is first penetrated into the ground. This steel pipe pile 1 adopts existing methods such as a method of hitting the head and driving it into the ground, a method of press-fitting while applying vibration, and a method of press-fitting while excavating the ground at the tip from the steel pipe. Can do.
As shown in FIG. 3 (a), an oblique material receiving portion 11 and an oblique material joint portion 12 connected thereto are attached in advance to the position where the underground oblique material 2 of the steel pipe pile 1 is joined. Then, the tip of the wire rope 14 is locked to the diagonal member joint 12. As shown in FIG. 5, the diagonal joint 12 is rotated around the axis of the rotation shaft 13, and the wire rope 14 is brought close to the outer peripheral surface of the steel pipe pile 1, and the wire rope 14 extends along the steel pipe pile 1. And support it upwards. In this state, the steel pipe pile 1 is penetrated into the ground, and the wire rope 14 is drawn along the steel pipe pile 1 to the ground surface.

ワイヤロープ１４は、さらに地表面に沿って配置し、地中斜材２とする斜材用鋼管２ａの内側に先端側から挿通する。そして、この斜材用鋼管２ａは、図３（ｂ）に示すように地中斜材２を設置しようとする位置の軸線に沿って先端側から斜め下方に向けて地中に圧入する。斜材用鋼管２の圧入は、例えば図６に示すように、杭等の貫入に用いられる走行可能な重機７を用いて圧入することができ、振動を付与しながら圧入するものであってもよい。また、斜材用鋼管２ａの圧入時には、斜材用鋼管２ａの上端部から水を供給し、斜材用鋼管２ａ内を経て先端付近の地盤内に水を供給することができる。水の供給は、斜材用鋼管２ａ内を直接流下させても良いが、斜材用鋼管２ａの内側にホースを差し入れ、このホースを経て先端付近の地盤に水を供給しても良い。また、ホースの先にはノズルを設け、水圧を調整しながら水を噴射するものであってもよい。
なお、地中に貫入する斜材用鋼管２ａには、図６及び図７に示すように外周面に切削部２ｂを設けておくことができる。この切削部２ｂは管部材である斜材用鋼管２ａの外周面に、のこぎり状に先端が尖った突出部を軸線方向に複数を配列したものである。この突出部は、斜材用鋼管２ａの周方向の一部に設けられており、軸線方向には全長にわたって設けられるものであっても良いし、先端から限定された範囲に設けられるものであっても良い。 The wire rope 14 is further arranged along the ground surface, and is inserted from the front end side into the diagonal steel pipe 2a as the underground diagonal 2. The diagonal steel pipe 2a is press-fitted into the ground obliquely downward from the tip side along the axis of the position where the underground diagonal 2 is to be installed as shown in FIG. 3 (b). For example, as shown in FIG. 6, the oblique steel pipe 2 can be press-fitted using a travelable heavy machine 7 used for penetrating a pile or the like, and can be press-fitted while applying vibration. Good. Further, when the diagonal steel pipe 2a is press-fitted, water can be supplied from the upper end of the diagonal steel pipe 2a, and can be supplied into the ground near the tip through the diagonal steel pipe 2a. The water supply may flow directly down through the diagonal steel pipe 2a, but a hose may be inserted inside the diagonal steel pipe 2a, and water supplied to the ground near the tip via this hose. Further, a nozzle may be provided at the tip of the hose to inject water while adjusting the water pressure.
The diagonal steel pipe 2a penetrating into the ground can be provided with a cutting part 2b on the outer peripheral surface as shown in FIGS. This cutting portion 2b is formed by arranging a plurality of protruding portions with a sharpened tip in an axial direction on the outer peripheral surface of an oblique steel pipe 2a which is a pipe member. This protrusion is provided at a part of the steel pipe 2a for oblique material in the circumferential direction, and may be provided over the entire length in the axial direction or provided within a limited range from the tip. May be.

上記のように斜材用鋼管２ａを地中の斜め方向に貫入するのにともない、斜材用鋼管２ａの後方からワイヤロープ１４を牽引する。これにより、図４（ａ）に示すようにワイヤロープ１４が地表面から土中にくい込み、鋼管杭２に沿った位置からも土中にくい込む。そして、斜材用鋼管２ａの貫入が進むのにともなって牽引を繰り返し、ワイヤロープ１４を、該ワイヤロープの先端部を鋼管杭１に接合した位置と斜材用鋼管２ａの先端とを結ぶ線上に近づける。
ワイヤロープ１４が斜材用鋼管２ａ内に引き込まれ、図４（ｂ）に示すように、ワイヤロープが鋼管杭１との接合位置と斜材用鋼管２ａの先端とを結ぶ線上に近くなると、ワイヤロープを牽引した状態で斜材用鋼管２ａを軸線方向に往復移動し、これを繰り返して斜材用鋼管２ａの位置を調整する。斜材用鋼管２ａを地表面から斜め下方に貫入するときには方向の誤差が生じ、正確に鋼管杭１と接合する位置に向かって貫入することは難しく、生じた貫入位置の誤差を修正するものである。斜材用鋼管２ａには外周面から突出して切削部２ｂが設けられており、往復移動によって切削部２ｂが地盤を削り、斜材用鋼管２ａがその軸線を移動するように位置が調整される。切削部２ｂは、斜材用鋼管２ａを軸線回りに回転させることによって周方向の位置を調整することができる。これにより斜材用鋼管２ａを移動させる方向を選択することができる。つまり、切削部２ｂが突出する方向に斜材用鋼管が移動しやすくなる。 The wire rope 14 is pulled from the rear of the diagonal steel pipe 2a as the diagonal steel pipe 2a penetrates in the oblique direction in the ground as described above. Thereby, as shown to Fig.4 (a), the wire rope 14 gets into the soil from the ground surface, and also gets into the soil from the position along the steel pipe pile 2. FIG. As the penetration of the diagonal steel pipe 2a proceeds, the traction is repeated, and the wire rope 14 is connected to the position where the tip of the wire rope is joined to the steel pipe pile 1 and the front end of the diagonal steel pipe 2a. Move closer to.
When the wire rope 14 is drawn into the diagonal steel pipe 2a and the wire rope is close to the line connecting the joining position of the steel pipe pile 1 and the tip of the diagonal steel pipe 2a, as shown in FIG. With the wire rope pulled, the diagonal steel pipe 2a is reciprocated in the axial direction, and this is repeated to adjust the position of the diagonal steel pipe 2a. When the diagonal steel pipe 2a is penetrated obliquely downward from the ground surface, an error in the direction occurs, and it is difficult to accurately penetrate toward the position where the steel pipe pile 1 is joined, and the produced error in the penetration position is corrected. is there. The oblique steel pipe 2a is provided with a cutting portion 2b protruding from the outer peripheral surface, and the position is adjusted so that the cutting portion 2b scrapes the ground by reciprocating movement and the oblique steel pipe 2a moves along its axis. . The cutting part 2b can adjust the position of the circumferential direction by rotating the steel pipe 2a for diagonal materials around an axis. As a result, the direction in which the diagonal steel pipe 2a is moved can be selected. That is, the diagonal steel pipe easily moves in the direction in which the cutting portion 2b protrudes.

斜材用鋼管２ａの先端が斜材接合部１２に接近すると、牽引されているワイヤロープ１４に案内されて斜材用鋼管２ａの先端部が斜材案内部１２ｂに嵌め合わされる。そして、斜材用鋼管２ａを押し入れることによって先端が斜材接合部１２の当接板１２ａに突き当てられ、斜材用鋼管２ａが斜材接合部１２と斜材受け部１１とを介して鋼管杭１の所定の位置に接合される。
貫入した斜材用鋼管２ａの先端すなわち下端が鋼管杭１と接合された後は、ワイヤロープ１４を切断するともに、鋼管杭１の上端部から斜材用鋼管２ａの上端部に水平連結部材３を架け渡し、それぞれ接合して斜材用鋼管からなる地中斜材２を備えた地中構造体が完成する。 When the tip of the diagonal steel pipe 2a approaches the diagonal material joint 12, the tip of the diagonal steel pipe 2a is fitted into the diagonal material guide 12b by being guided by the pulled wire rope 14. Then, by pushing in the diagonal steel pipe 2 a, the tip is abutted against the contact plate 12 a of the diagonal material joint 12, and the diagonal steel pipe 2 a passes through the diagonal material joint 12 and the diagonal material receiving part 11. It is joined to a predetermined position of the steel pipe pile 1.
After the tip, that is, the lower end of the penetrated diagonal steel pipe 2a is joined to the steel pipe pile 1, the wire rope 14 is cut and the horizontal connecting member 3 is connected from the upper end of the steel pipe pile 1 to the upper end of the diagonal steel pipe 2a. The underground structure provided with the underground diagonal member 2 made of steel pipe for diagonal members is completed.

次に、本発明の他の実施形態である地下斜材の設置方法を図８及び図９に基づいて説明する。
この方法も、図１に示す地下構造体が備える地下斜材２と同様に、主部材である鋼管杭２１の所定の位置に下端部が接合された地下斜材２２を設置するものである。
この方法では、図８（ａ）に示すように、主部材である鋼管杭２１を地中に貫入するときに、この鋼管杭２１の所定の深さの位置にワイヤロープ３４の先端部を結合しておく。このワイヤロープ３４の後方部分は斜材用鋼管２２ａの内側に先端側から挿通し、この斜材用鋼管２２ａは先端を下方に向けて鋼管杭２１に沿った位置に支持する。
鋼管杭２１のワイヤロープ３４が結合される位置に設けられた斜材受け部及３１び斜材接合部３２は、図２に示すものと同じ構造となっている。そして、鋼管杭２１に沿って支持された斜材用鋼管２２ａの先端すなわち下端は、図１０に示すように斜材接合部３２が有する斜材案内部３２ｂに嵌め合わされた状態となっている。このように斜材用鋼管２２ａを支持した状態で鋼管杭２１を斜材用鋼管２２ａとともに地中に貫入する。 Next, the installation method of the underground diagonal material which is other embodiment of this invention is demonstrated based on FIG.8 and FIG.9.
In this method, similarly to the underground diagonal 2 provided in the underground structure shown in FIG. 1, an underground diagonal 22 having a lower end joined at a predetermined position of a steel pipe pile 21 as a main member is installed.
In this method, as shown in FIG. 8 (a), when the steel pipe pile 21 which is the main member penetrates into the ground, the tip end portion of the wire rope 34 is coupled to a position of a predetermined depth of the steel pipe pile 21. Keep it. The rear portion of the wire rope 34 is inserted into the diagonal steel pipe 22a from the front end side, and the diagonal steel pipe 22a is supported at a position along the steel pipe pile 21 with the front end facing downward.
The diagonal material receiving part 31 and the diagonal material joint part 32 provided in the position where the wire rope 34 of the steel pipe pile 21 is couple | bonded have the same structure as what is shown in FIG. And the front-end | tip, ie, lower end, of the diagonal steel pipe 22a supported along the steel pipe pile 21 is in the state fitted in the diagonal material guide part 32b which the diagonal material joining part 32 has as shown in FIG. In this manner, the steel pipe pile 21 is penetrated into the ground together with the diagonal steel pipe 22a while the diagonal steel pipe 22a is supported.

鋼管杭２１が所定の深さまで地中に貫入されたとき、図８（ｂ）に示すように、斜材用鋼管２２ａの上部は地表面からほぼ鉛直方向に突き出している。そして、斜材用鋼管の内側にはワイヤロープ３４が挿通されており、このワイヤロープ３４を斜材用鋼管２２ａの後方から牽引するとともに、この斜材用鋼管２２ａの上部を把持し、ワイヤロープをガイドとして斜材用鋼管２２ａの軸線方向に該斜材用鋼管２２ａの往復移動を繰り返す。これにより、地中斜材を設置する軸線の位置に向けて上記斜材用鋼管２２ａを傾けてゆく。斜材用鋼管２２ａには、図７に示すものと同様の切削部２２ｂがほぼ全長にわたって設けられており、これらの切削部２２ｂを傾ける方向に向けて往復移動を繰り返すことにより、切削部２２ｂが地盤を削り、図９（ａ）に示すように斜材用鋼管２２ａを徐々に傾けて行くことができる。また、このとき斜材用鋼管の内側にはワイヤロープ３４が挿通されており、このワイヤロープ３４を斜材用鋼管２２ａの後方から牽引することにより、このワイヤロープ３４をガイドとして斜材用鋼管２２ａはいつでも斜材案内部３２ｂに嵌め合わせて接合することができるものとなっている。   When the steel pipe pile 21 is penetrated into the ground to a predetermined depth, as shown in FIG. 8 (b), the upper part of the diagonal steel pipe 22a protrudes substantially vertically from the ground surface. A wire rope 34 is inserted inside the steel pipe for diagonal material. The wire rope 34 is pulled from behind the steel pipe 22a for diagonal material, and the upper part of the steel pipe 22a for diagonal material is gripped. As a guide, the reciprocating movement of the diagonal steel pipe 22a is repeated in the axial direction of the diagonal steel pipe 22a. Thereby, the steel pipe 22a for diagonal materials is inclined toward the position of the axis line which installs an underground diagonal material. The diagonal steel pipe 22a is provided with a cutting portion 22b similar to that shown in FIG. 7 over almost the entire length, and by repeating reciprocation in a direction in which these cutting portions 22b are inclined, the cutting portion 22b The ground can be shaved and the diagonal steel pipe 22a can be gradually inclined as shown in FIG. Further, at this time, a wire rope 34 is inserted inside the diagonal steel pipe. By pulling the wire rope 34 from the rear side of the diagonal steel pipe 22a, the diagonal steel pipe is used as a guide. 22a can be fitted and joined to the diagonal guide 32b at any time.

上記のように斜材用鋼管２２ａの往復移動を繰り返して該斜材用鋼管２２ａを傾斜させ、該斜材用鋼管２２ａが所定の傾きとなった位置で、斜材用鋼管２２ａの先端を斜材案内部３２ｂに嵌め合わせ、当接板３２ａに突き当てて接合する。そして、斜材用鋼管２２ａの上端部と主部材である鋼管杭２１の上端部とに水平連結部材２３を架け渡し、鋼管杭２１及び斜材用鋼管２２ａと接合することによって斜材用鋼管２２ａが地中斜材２２となった地下構造体を完成することができる。   As described above, the diagonal steel pipe 22a is repeatedly reciprocated to incline the diagonal steel pipe 22a, and at the position where the diagonal steel pipe 22a has a predetermined inclination, the tip of the diagonal steel pipe 22a is inclined. It fits in the material guide part 32b, abuts on the contact plate 32a and joins. And the horizontal connection member 23 is spanned between the upper end part of the steel pipe pile 22a for diagonal materials, and the upper end part of the steel pipe pile 21 which is a main member, and the steel pipe 22a for diagonal materials is joined by joining the steel pipe pile 21 and the steel pipe 22a for diagonal materials. The underground structure which became the underground diagonal 22 can be completed.

上記のような地中斜材２２の設置方法では、切削部２２ｂが外周面に設けられた斜材用鋼管２２ａに代えて、切削部のない斜材用鋼管４２を用い、図１１に示すように斜材用鋼管４２の外側に切削部材４３を嵌め合わせて使用することができる。この切削部材４３は、斜材用鋼管４２の外径より内径が大きい鋼管４３ａの外周面に切削部４３ｂを設けたものであり、この鋼管４３ａの内側に斜材用鋼管４２を挿入した状態とする。そして、鋼管杭２１の外周面に設けられた斜材受け部３１と斜材接合部３２とを介して鋼管杭２１に沿った位置に支持し、図８に示す実施の形態と同様に鋼管杭２１とともに地中に貫入することができる。   In the installation method of the underground diagonal member 22 as described above, an oblique member steel pipe 42 having no cutting portion is used instead of the oblique member steel tube 22a provided with the cutting portion 22b on the outer peripheral surface, as shown in FIG. In addition, the cutting member 43 can be fitted to the outside of the steel pipe 42 for oblique material. This cutting member 43 is provided with a cutting portion 43b on the outer peripheral surface of a steel pipe 43a whose inner diameter is larger than the outer diameter of the diagonal steel pipe 42, and the diagonal steel pipe 42 is inserted inside the steel pipe 43a. To do. And it supports to the position along the steel pipe pile 21 via the diagonal material receiving part 31 and the diagonal material joining part 32 which were provided in the outer peripheral surface of the steel pipe pile 21, and is similar to the embodiment shown in FIG. 21 can penetrate into the ground.

鋼管杭２１が所定の深さまで貫入された後には、切削部材４３のみを斜材用鋼管４２の軸線方向に往復移動するか、又は斜材用鋼管４２ととともに切削部材４３を往復移動させ、これを繰り返して、図８（ｂ）及び図９（ａ）に示す工程と同様にして斜材用鋼管４２を傾けてゆくことができる。そして、斜材用鋼管４２が所定の傾きとなる位置まで移動した後、切削部材４３を上方に抜き取り、水平連結部材２３を接合する。   After the steel pipe pile 21 has been penetrated to a predetermined depth, only the cutting member 43 is reciprocated in the axial direction of the diagonal steel pipe 42, or the cutting member 43 is reciprocated together with the diagonal steel pipe 42. By repeating the above, the diagonal steel pipe 42 can be tilted in the same manner as in the steps shown in FIGS. 8B and 9A. And after the steel pipe 42 for diagonal materials moves to the position used as the predetermined inclination, the cutting member 43 is extracted upwards and the horizontal connection member 23 is joined.

このように切削部材４３を用いることにより、複数の地中斜材を設けるときに、地中斜材とするそれぞれの斜材用鋼管には切削部となる突起を設ける必要はなく、一つの切削部材４３を製作しておけば、これを転用して複数の地中斜材を設置することができる。   By using the cutting member 43 in this way, when providing a plurality of underground slant members, it is not necessary to provide projections that serve as cutting portions in each of the oblique steel pipes that are the underground slant members. If the member 43 is manufactured, a plurality of underground diagonal materials can be installed by diverting it.

なお、本発明は以上に説明した実施の形態に限定されるものではなく、本発明の範囲内において様々な形態で実施をすることができる。
例えば、主部材は鋼管杭に限定されるものではなく、形鋼を用いた杭であっても良いし、コンクリートからなる杭であっても良い。また、杭に限定されるものではなく鋼矢板や鋼管矢板であっても良い。さらに地表面上で形成されたコンクリートの函体を沈下させたケーソン等であっても良い。
一方、地中斜材も鋼管に限定されるものではなく、プレキャストコンクリートで形成されるものであってもよい。 The present invention is not limited to the embodiments described above, and can be implemented in various forms within the scope of the present invention.
For example, the main member is not limited to a steel pipe pile, and may be a pile using a shape steel or a pile made of concrete. Moreover, it is not limited to a pile, A steel sheet pile or a steel pipe sheet pile may be sufficient. Further, it may be a caisson in which a concrete box formed on the ground surface is sunk.
On the other hand, the underground diagonal material is not limited to the steel pipe, and may be formed of precast concrete.

また、本発明の方法によって設置される地中斜材は、図１に示すように荷重を支持するための構造体の一部となるものに限定されず、図１２に示すように、建築物５１の周囲を囲むように地表面下に設けられた地中連続鋼隔壁５２の変位を拘束するものとして設置することもできる。
上記地中連続隔壁５２は、砂質地盤における地震時の液状化を抑制するために設けられたものであり、液状化の可能性がある層５４の層厚が大きく、液状化しない層５５まで地中連続鋼隔壁５２を貫入せずに、液状化しない層５５より上方となる深さまで設けられたものである。このような地中連続鋼隔壁５２は、液状化による土の流動によって変位する可能性があり、これを拘束するために、対向する位置に設けられた地中連続鋼隔壁の一方の頂部と他方の所定の深さの位置とを地中斜材５３で連結したものである。このような地中斜材５３も本発明の方法により、以上に説明した実施の形態と同様に設置することができる。 In addition, the underground diagonal material installed by the method of the present invention is not limited to a part of the structure for supporting a load as shown in FIG. 1, but as shown in FIG. It can also be installed to restrain the displacement of the underground continuous steel partition wall 52 provided below the ground surface so as to surround the periphery of 51.
The underground continuous partition wall 52 is provided in order to suppress liquefaction at the time of an earthquake in sandy ground, and the layer 54 having a possibility of liquefaction has a large layer thickness, and does not liquefy. It is provided up to a depth above the layer 55 that does not liquefy without penetrating the underground continuous steel partition wall 52. Such underground continuous steel partition walls 52 may be displaced by the flow of soil due to liquefaction, and in order to restrain this, one top portion and the other of the underground continuous steel partition walls provided at opposing positions are constrained. The position of the predetermined depth is connected by the underground oblique material 53. Such underground slant 53 can also be installed by the method of the present invention in the same manner as in the embodiment described above.

１，２１：鋼管杭， ２，２２：地中斜材， ２ａ，２２ａ：斜材用鋼管， ２ｂ，２２ｂ：切削部， ３，２３：水平連結部材， ４：擁壁， ５：背面土， ６：建築物， ７：重機，
１１，３１：斜材受け部， １１ａ：鉛直板部， １１ｂ：傾斜板部， １２，３２：斜材接合部， １２ａ，３２ａ：当接板， １２ｂ，３２ｂ：斜材案内部， １２ｃ，３２ｃ：連結板， １２ｄ：開口， １３，３３：回動軸， １４，３４：ワイヤロープ， １４ａ：定着部材，
４２：斜材用鋼管， ４３：切削部材， ４３ａ：鋼管， ４３ｂ：切削部，
５１：建築物， ５２：地中連続鋼隔壁， ５３：地中斜材， ５４：液状化し易い層， ５５：液状化しない層
1,2: Steel pipe piles, 2,22: Underground diagonal, 2a, 22a: Steel pipe for diagonal, 2b, 22b: Cutting part, 3,23: Horizontal connecting member, 4: Retaining wall, 5: Back soil, 6: Building, 7: Heavy machinery,
11, 31: Diagonal material receiving portion, 11a: Vertical plate portion, 11b: Inclined plate portion, 12, 32: Diagonal material joint portion, 12a, 32a: Contact plate, 12b, 32b: Diagonal material guide portion, 12c, 32c : Connecting plate, 12d: opening, 13, 33: rotating shaft, 14, 34: wire rope, 14a: fixing member,
42: Steel pipe for diagonal materials, 43: Cutting member, 43a: Steel pipe, 43b: Cutting part,
51: Building, 52: Underground continuous steel partition wall, 53: Underground oblique material, 54: Layer that is easily liquefied, 55: Layer that is not liquefied

Claims (6)

地表面又は地表面付近から下方に軸線を有し、地表面から所定の深さの位置にワイヤロープの先端部が結合された主部材を地中に設置する工程と、
前記ワイヤロープの後方部分を管部材の先端側から内側に挿通し、該管部材の先端を前記主部材と前記ワイヤロープとの結合位置に向けて該管部材を地中に貫入する工程と、
前記ワイヤロープを前記管部材の後方側から牽引するとともに、前記管部材を軸線方向に繰り返し往復移動し、又は該管部材に装着された部材を該管部材の軸線方向に繰り返し往復移動して、前記ワイヤロープが挿通された前記管部材の位置を調整する工程と、
前記ワイヤロープをガイドとし、前記主部材の前記ワイヤロープとの結合位置に設けられた斜材受け部に、前記管部材の先端を接合して地中斜材とする工程と、を有することを特徴とする地中斜材の設置方法 A step of installing in the ground a main member having an axis line downward from the ground surface or near the ground surface and having the tip of the wire rope coupled at a predetermined depth from the ground surface;
Inserting the rear portion of the wire rope inward from the distal end side of the tube member, and penetrating the tube member into the ground with the distal end of the tube member facing the coupling position of the main member and the wire rope;
While pulling the wire rope from the rear side of the tube member, the tube member is repeatedly reciprocated in the axial direction, or the member attached to the tube member is repeatedly reciprocated in the axial direction of the tube member, Adjusting the position of the tube member through which the wire rope is inserted;
Using the wire rope as a guide, and joining the distal end of the tube member to an oblique material receiving portion provided at a position where the main member is coupled to the wire rope to form an underground oblique material. Installation method of the characteristic underground slant 前記管部材を地中に貫入する工程は、
前記ワイヤロープを、前記主部材との結合位置から該主部材に沿って地表面に至り地表面に沿って該主部材から離れた位置まで配置して、さらに後方部分を前記管部材の先端側から内側に挿通し、 前記主部材と離れた位置から前記管部材の先端を斜め下方に向けて該管部材を地中に貫入するとともに、前記ワイヤロープを該管部材の後方側から牽引し、 該ワイヤロープを地表面及び前記主部材に沿った位置から地中にくい込ませて、前記ワイヤロープと前記主部材との結合位置と前記管部材の先端とを結ぶ線上へ該ワイヤロープを近づける工程を含むことを特徴とする請求項１に記載の地中斜材の設置方法。 The step of penetrating the pipe member into the ground,
The wire rope is disposed from a position where it is joined to the main member to the ground surface along the main member and to a position away from the main member along the ground surface, and a rear portion is further disposed on the distal end side of the pipe member. From the position away from the main member to penetrate the tube member into the ground with the tip of the tube member obliquely downward, pulling the wire rope from the rear side of the tube member, A step of bringing the wire rope into the ground from a position along the ground surface and the main member, and bringing the wire rope close to a line connecting a connecting position of the wire rope and the main member and a tip of the tube member The installation method of the underground diagonal material of Claim 1 characterized by the above-mentioned. 前記管部材を地中に貫入する工程は、前記管部材の後端部から注水し、該管部材の先端付近の地盤中に供給する工程を含むことを特徴とする請求項２に記載の地中斜材の設置方法。   3. The ground according to claim 2, wherein the step of penetrating the pipe member into the ground includes a step of pouring water from a rear end portion of the pipe member and supplying the water into the ground near the tip of the pipe member. How to install mid-cline materials. 前記管部材を地中に貫入する工程は、前記主部材の所定位置に先端部が結合されたワイヤロープを前記管部材の先端側から内側に挿通し、該管部材は先端を下方に向けて前記主部材に沿った位置に支持して、前記主部材を地中に設置する工程と同時に行うものとし、
前記管部材の位置を調整する工程は、該管部材を該管部材の軸線方向に繰り返し往復移動することによって地盤を削り、前記管部材を前記主部材に沿った位置から徐々に傾斜角が変化するように移動させるものであることを特徴とする請求項１に記載の地中斜材の設置方法。 The step of penetrating the pipe member into the ground is to insert a wire rope having a tip portion coupled to a predetermined position of the main member from the tip side of the pipe member to the inside, and the pipe member with the tip facing downward. Supporting the position along the main member, it is performed simultaneously with the step of installing the main member in the ground,
In the step of adjusting the position of the pipe member, the ground is shaved by repeatedly reciprocating the pipe member in the axial direction of the pipe member, and the inclination angle gradually changes from the position along the main member. The method for installing the underground diagonal material according to claim 1, wherein the ground diagonal material is moved as described above. 前記管部材の外周面の周方向における限定された範囲に、該管部材の軸線方向への往復移動によって地盤を切削する切削部を形成しておくことを特徴とする請求項４に記載の地中斜材の設置方法。   The ground according to claim 4, wherein a cutting portion for cutting the ground by reciprocating movement of the pipe member in the axial direction is formed in a limited range in the circumferential direction of the outer peripheral surface of the pipe member. How to install mid-cline materials. 前記管部材を地中に貫入する工程は、前記主部材の所定位置に先端部が結合されたワイヤロープを前記管部材の先端側から内側に挿通し、該管部材は先端を下方に向けて前記主部材に沿った位置に支持して、前記主部材を地中に設置する工程と同時に行うものとし、
前記管部材の位置を調整する工程は、前記管部材の外側に切削部材を装着し、該切削部材を前記管部材の軸線方向に繰り返し往復移動することによって地盤を削り、前記管部材を前記主部材に沿った位置から徐々に傾斜角が変化するように移動させるものとし、
前記切削部材は、前記管部材の外側の全周又は周方向の一部を囲むように嵌め合わされ、周方向における限定された範囲に、該管部材の軸線方向への往復移動によって地盤を切削する切削部を備えるものとすることを特徴とする請求項１に記載の地中斜材の設置方法。

The step of penetrating the pipe member into the ground is to insert a wire rope having a tip portion coupled to a predetermined position of the main member from the tip side of the pipe member to the inside, and the pipe member with the tip facing downward. Supporting the position along the main member, it is performed simultaneously with the step of installing the main member in the ground,
The step of adjusting the position of the pipe member includes attaching a cutting member to the outside of the pipe member, scraping the ground by repeatedly reciprocating the cutting member in the axial direction of the pipe member, and removing the pipe member from the main member. It shall be moved so that the inclination angle gradually changes from the position along the member,
The cutting member is fitted so as to surround the entire outer periphery of the tube member or a part in the circumferential direction, and the ground is cut by a reciprocating movement of the tube member in the axial direction within a limited range in the circumferential direction. The ground diagonal material installation method according to claim 1, further comprising a cutting portion.

JP2012100705A 2012-04-26 2012-04-26 How to install underground diagonal materials Expired - Fee Related JP5887193B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012100705A JP5887193B2 (en) 2012-04-26 2012-04-26 How to install underground diagonal materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012100705A JP5887193B2 (en) 2012-04-26 2012-04-26 How to install underground diagonal materials

Publications (2)

Publication Number Publication Date
JP2013227788A true JP2013227788A (en) 2013-11-07
JP5887193B2 JP5887193B2 (en) 2016-03-16

Family

ID=49675670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012100705A Expired - Fee Related JP5887193B2 (en) 2012-04-26 2012-04-26 How to install underground diagonal materials

Country Status (1)

Country Link
JP (1) JP5887193B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101671395B1 (en) * 2016-03-30 2016-11-01 창은건설 주식회사 soil retaining structure
CN106165146A (en) * 2014-03-31 2016-11-23 日本电气株式会社 Accumulator plant
JP2017101534A (en) * 2015-11-25 2017-06-08 有限会社久美川鉄工所 Building reinforcing structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63181817A (en) * 1987-01-20 1988-07-27 Fujita Corp Ground stabilization work
JPH0517959A (en) * 1991-07-17 1993-01-26 Sumitomo Constr Co Ltd Earthquake resistance reinforcing device for existing structure
JP2000319902A (en) * 1999-05-11 2000-11-21 Shimizu Corp Cast-in-place pile with brace and construction method therefor
JP2003201713A (en) * 2002-01-07 2003-07-18 Tokyo Seiko Co Ltd High-strength soil anchor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63181817A (en) * 1987-01-20 1988-07-27 Fujita Corp Ground stabilization work
JPH0517959A (en) * 1991-07-17 1993-01-26 Sumitomo Constr Co Ltd Earthquake resistance reinforcing device for existing structure
JP2000319902A (en) * 1999-05-11 2000-11-21 Shimizu Corp Cast-in-place pile with brace and construction method therefor
JP2003201713A (en) * 2002-01-07 2003-07-18 Tokyo Seiko Co Ltd High-strength soil anchor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106165146A (en) * 2014-03-31 2016-11-23 日本电气株式会社 Accumulator plant
JP2017101534A (en) * 2015-11-25 2017-06-08 有限会社久美川鉄工所 Building reinforcing structure
KR101671395B1 (en) * 2016-03-30 2016-11-01 창은건설 주식회사 soil retaining structure

Also Published As

Publication number Publication date
JP5887193B2 (en) 2016-03-16

Similar Documents

Publication Publication Date Title
JP4796477B2 (en) Steel pipe soil cement pile construction method and composite pile construction method
CA2682816A1 (en) Spiral steel pile
KR101766165B1 (en) Column Pile Construction Method Using And Top-Down Method Using Thereof
JP5887193B2 (en) How to install underground diagonal materials
KR101051878B1 (en) Pile construction device using spray type drilling bit
JP5698316B2 (en) Construction method of foundation pile
JP6513470B2 (en) Foundation pile for installation, foundation pile for installation of solar panels, installation method of foundation pile and installation method of foundation pile for solar panels
KR101727206B1 (en) The smart front end cap for adjusting phc file length and the method using thereof
KR101870714B1 (en) Prefabricated steel pole for soil excavation and its construction method
KR101871306B1 (en) Large diameter waterjet ground drilling machine and pile construction method using it
JP4608327B2 (en) The tip structure of a steel pipe pile used in the medium digging method.
JP6807285B2 (en) Construction method of ground improvement body and casing pipe
JP6735138B2 (en) Construction method of retaining wall structure and retaining wall structure
JP2013036216A (en) Reinforcement method of retaining wall
KR20130061377A (en) Structure of retaining wall and construction method for installing underground structures
CN105926582A (en) Prefabricated hollow component underground tunneling construction combined body, continuous wall and construction method
KR101040042B1 (en) Method for constructing pile using variable type excavating bit
CN102409679A (en) Pore-forming high-pressure slurry pipe reel for piling
KR20170090190A (en) Steel structures having departure prevention structure for sheathing work and construction method thereof
JP2017190635A (en) Construction method for steel pipe pile
KR101385399B1 (en) Excavating Agitation rod for piling with backfilling soil and Method of piling thereof
JP2013024005A (en) Support construction method of structure
KR20160001115U (en) Coulper of steel pipe pile for rotational intrusion and pullout
JP2020169455A (en) Construction method of soil cement continuous wall
JP2010281079A (en) Method for constructing steel pipe pile

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20150312

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20151228

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20160209

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160215

R150 Certificate of patent or registration of utility model

Ref document number: 5887193

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees