JP5500483B2 - Construction method of underground structure - Google Patents

Construction method of underground structure Download PDF

Info

Publication number
JP5500483B2
JP5500483B2 JP2010286218A JP2010286218A JP5500483B2 JP 5500483 B2 JP5500483 B2 JP 5500483B2 JP 2010286218 A JP2010286218 A JP 2010286218A JP 2010286218 A JP2010286218 A JP 2010286218A JP 5500483 B2 JP5500483 B2 JP 5500483B2
Authority
JP
Japan
Prior art keywords
separator
pile
support bar
shaped member
underground structure
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.)
Active
Application number
JP2010286218A
Other languages
Japanese (ja)
Other versions
JP2012132239A (en
Inventor
英雄 富田
Original Assignee
株式会社富田製作所
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 株式会社富田製作所 filed Critical 株式会社富田製作所
Priority to JP2010286218A priority Critical patent/JP5500483B2/en
Publication of JP2012132239A publication Critical patent/JP2012132239A/en
Application granted granted Critical
Publication of JP5500483B2 publication Critical patent/JP5500483B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Description

本発明は、パイプルーフ等の地下構造物の構築方法に関する。   The present invention relates to a method for constructing an underground structure such as a pipe roof.

従来、地盤中に鋼管等からなるパイプをその長さ方向を水平方向に向けるとともに、互いに隣接した配置に圧入し、各パイプ間を接合することによりパイプルーフやトンネル状の構造物を構築する方法が知られている（例えば、特許文献１）。   Conventionally, a pipe roof or a tunnel-like structure is constructed by pressing pipes made of steel pipes or the like in the ground in the horizontal direction, press-fitting them into adjacent positions, and joining the pipes together Is known (for example, Patent Document 1).

この工法において隣り合う各パイプ間を接合するには、予めパイプの外周面に継手部材を設置しておき、圧入施工時に隣り合う継手の位置を合わせて互いにガイドとして嵌合させながら推進する方法が知られている。   In order to join adjacent pipes in this construction method, a joint member is installed in advance on the outer peripheral surface of the pipe, and the method of propelling while fitting the positions of adjacent joints during press fitting and fitting them together as a guide is a method. Are known.

しかし上記の接合方法では、パイプ圧入時に隣り合う継手部材同士が嵌合するように厳密な位置合わせを行いながらパイプを圧入しなければならず作業効率が悪い。   However, in the above joining method, pipes must be press-fitted while performing precise alignment so that adjacent joint members are fitted together at the time of pipe press-fitting, and work efficiency is poor.

そこで、パイプルーフ等に隔てられた一方の地盤を掘削して作業空間を形成し、作業空間内に露出した各パイプにセパレータを介して型枠用板材を支持させて型枠を形成し、型枠内にモルタル等の充填材を充填することにより各パイプ間を接合させる工法が開発されている。   Therefore, excavating one of the grounds separated by a pipe roof or the like to form a work space, forming a mold by supporting a plate material for the mold through a separator to each pipe exposed in the work space, A construction method for joining pipes by filling a frame with a filler such as mortar has been developed.

このセパレータ１００を各パイプ１０１に固定するには、図１２に示すように、パイプ１０１に孔１０２を開けてこの孔１０２よりセパレータ１００の一端をパイプ１０１内に挿入し、パイプ内周面にナット等の固定具１０３を用いて定着させる方法や、図１３に示すように、鉄筋等の支持棒材１０５をパイプ１０１の外周面にスペーサー１０６，１０６を介して固定し、この支持棒材１０５に固定用部材１０７を介して固定する方法、更には作業現場でセパレータの端部をパイプの外周面に直接溶接する方法等がある。   In order to fix the separator 100 to each pipe 101, as shown in FIG. 12, a hole 102 is formed in the pipe 101, and one end of the separator 100 is inserted into the pipe 101 through the hole 102, and a nut is formed on the inner peripheral surface of the pipe. A fixing method using a fixing tool 103 such as the like, or a support bar 105 such as a reinforcing bar is fixed to the outer peripheral surface of the pipe 101 via spacers 106 and 106 as shown in FIG. There are a method of fixing via the fixing member 107 and a method of welding the end of the separator directly to the outer peripheral surface of the pipe at the work site.

特開２００３−３４３１９０号公報JP 2003-343190 A

しかしながら上述の如き従来の技術では、図１２に示す方法にあってはパイプに孔を開けるとこの孔を通して地盤からの出水が作業空間内に漏れ出す虞があるという問題がある。   However, in the conventional technique as described above, there is a problem that when the hole shown in FIG. 12 is opened, water discharged from the ground may leak into the working space through the hole.

また、図１３に示す方法では、スペーサーを介して支持棒材を鋼管の表面より浮かせた状態にしなくては固定用部材を取り付けることができず、そのため部品を多く必要としコストが増大するという問題があった。また、鋼管とスペーサー間、スペーサーと鉄筋間で２重に溶接を行わなくてはならないためコストが増大するという問題があった。   Further, in the method shown in FIG. 13, the fixing member cannot be attached unless the support bar is lifted from the surface of the steel pipe via the spacer, which requires a large number of parts and increases the cost. was there. In addition, there is a problem that the cost increases because welding must be performed twice between the steel pipe and the spacer and between the spacer and the reinforcing bar.

更には、作業現場において溶接作業を行うことは、作業環境が悪く、また一度固定してしまうと位置合わせ等が困難となるという問題があった。   Furthermore, performing the welding work at the work site has a problem that the working environment is poor and that once it is fixed, it is difficult to align the position.

本発明は、このような従来の問題に鑑み、作業性に優れ、且つ安価に施工することができる地下構造物の構築方法の提供を目的としてなされたものである。   In view of such a conventional problem, the present invention has been made for the purpose of providing a construction method of an underground structure that is excellent in workability and can be constructed at low cost.

上述の如き従来の問題を解決し、所期の目的を達成するための請求項1に記載の発明の特徴は、地盤中に複数の杭状部材をその長さ方向を水平方向に向け、且つ互いに隣接する配置に埋設して杭状部材群を形成した後、該杭状部材群により隔てられた一方の地盤を掘削して作業空間を形成し、該作業空間内に露出した前記各杭状部材にセパレータを介して型枠用板材を支持させて型枠を形成し、該型枠内にモルタル等の充填材を充填することにより前記各杭状部材間を接合させる地下構造物の構築方法において、前記杭状部材の外周面に支持棒材をその表面が前記杭状部材の外周面と接するように予め固定しておき、前記支持棒材が嵌り込む切欠き部を有するジョイント金具と、該ジョイント金具に枢支されたセパレータ保持部とを備え、該切欠き部は、半円状の半円状凹部と、前記半円状凹部と連通して前記切欠き部の開口部より前記支持棒材を前記半円状凹部側にガイドする受け入れ部とをもって構成され、該受け入れ部の内側縁には、前記支持棒材を前記半円状凹部側に押圧する固定用具を出し入れ可能に突出させてなるセパレータ固定用部材を使用し、 The feature of the invention according to claim 1 for solving the conventional problems as described above and achieving the intended purpose is that a plurality of pile-like members are oriented in the horizontal direction in the ground, and After forming a pile-like member group by burying in an arrangement adjacent to each other, excavating one ground separated by the pile-like member group to form a work space, each pile shape exposed in the work space A method for constructing an underground structure, in which a member is supported by a member through a separator to form a mold, and the piles are filled with a filler such as mortar in the mold. In this case, the support bar is fixed to the outer peripheral surface of the pile-shaped member in advance so that the surface thereof is in contact with the outer peripheral surface of the pile-shaped member, and the joint fitting having a notch portion into which the support bar is fitted, and A separator holding portion pivotally supported by the joint fitting, The notch portion includes a semicircular semicircular recess and a receiving portion that communicates with the semicircular recess and guides the support bar to the semicircular recess from the opening of the notch. And, on the inner edge of the receiving portion, a separator fixing member is used that protrudes so that a fixing tool that presses the support bar toward the semicircular concave portion can be taken in and out,

前記杭状部材群により隔てられた一方の地盤を掘削して作業空間を形成した後、前記セパレータ固定用部材を介して前記支持棒材にセパレータの一端を回動可能に支持させるとともに、セパレータの他端に型枠用板材を支持させて型枠を構築し、該型枠内に前記充填材を充填することにある。 After excavating one ground separated by the pile-shaped member group to form a work space, the support rod is supported by the support bar through the separator fixing member so as to be rotatable. A formwork is constructed by supporting a formwork plate at the other end, and the filling material is filled in the formwork.

請求項２に記載の発明の特徴は、請求項１の構成に加え、前記受け入れ部は、前記半円状凹部の一方の開口縁部を要とする扇型状に形成されたことにある。   According to a second aspect of the present invention, in addition to the configuration of the first aspect, the receiving portion is formed in a fan shape that requires one opening edge of the semicircular recess.

請求項３に記載の発明の特徴は、請求項１又は２の構成に加え、前記ジョイント金具には、前記セパレータ保持部が枢支される枢支孔が前記支持棒材の軸心から前記セパレータの軸心と直交する方向に間隔を隔てて形成されるとともに、前記切欠き部の開口縁部が支持棒材を支持させた前記杭状部材に当接するように形成されたことにある。 According to a third aspect of the present invention, in addition to the structure of the first or second aspect, the joint fitting includes a pivot hole in which the separator holding portion is pivotally supported from an axis of the support bar. The opening edge of the notch is formed so as to contact the pile-shaped member that supports the support bar.

請求項４に記載の発明の特徴は、請求項１，２又は３の構成に加え、前記ジョイント金具は、前記切欠き部開口縁部に該開口縁より外向きに傾斜した傾斜部が形成されたことにある。   According to a fourth aspect of the present invention, in addition to the configuration of the first, second, or third aspect, the joint fitting has an inclined portion that is inclined outward from the opening edge at the opening edge of the notch. That is.

請求項５に記載の発明の特徴は、請求項１〜３又は４の構成に加え、前記ジョイント金具は、前記半円状凹部の一方の縁部より前記半円の円周方向に張り出した形状の係合部を備えたことにある。   According to a fifth aspect of the present invention, in addition to the configuration of the first to third or fourth aspects, the joint fitting is shaped to protrude in the circumferential direction of the semicircle from one edge of the semicircular recess. Is provided with an engaging portion.

本発明に係る地下構造物の構築方法は、上述したように、地盤中に複数の杭状部材をその長さ方向を水平方向に向け、且つ互いに隣接する配置に埋設して杭状部材群を形成した後、該杭状部材群により隔てられた一方の地盤を掘削して作業空間を形成し、該作業空間内に露出した前記各杭状部材にセパレータを介して型枠用板材を支持させて型枠を形成し、該型枠内にコンクリート等の充填材を充填することにより前記各杭状部材間を接合させる地下構造物の構築方法において、前記杭状部材の外周面に支持棒材をその表面が前記杭状部材の外周面と接するように予め固定しておき、前記支持棒材が嵌り込む切欠き部を有するジョイント金具と、該ジョイント金具に枢支されたセパレータ保持部とを備え、該切欠き部は、半円状の半円状凹部と、前記半円状凹部と連通して前記切欠き部の開口部より前記支持棒材を前記半円状凹部側にガイドする受け入れ部とをもって構成され、該受け入れ部の内側縁には、前記支持棒材を前記半円状凹部側に押圧する固定用具を出し入れ可能に突出させてなるセパレータ固定用部材を使用し、前記杭状部材群により隔てられた一方の地盤を掘削して作業空間が形成された後、前記セパレータ固定用部材を介して前記支持棒材にセパレータの一端を回動可能に支持させるとともに、セパレータの他端に型枠用板材を支持させて型枠を構築し、該型枠内に前記充填材を充填することにより、支持棒材を鋼管等からなる杭状部材に直接固定するのでスペーサー等の部品を用いずともよく、部品点数が減少しコストの低減を図ることができ、また、施工現場において鋼管等からなる杭状部材に容易にセパレータを介して型枠を設置することができるので、施工性が向上しそれによってもコストの低減が図られる。 As described above, the method for constructing an underground structure according to the present invention embeds a plurality of pile-shaped members in the ground by placing the pile-shaped members in an arrangement adjacent to each other with the length direction set in the horizontal direction. After forming, excavate one ground separated by the pile-shaped member group to form a work space, and support the plate material for formwork through the separator to each pile-shaped member exposed in the work space. In the method for constructing an underground structure in which a mold is formed and the piles are filled with a filler such as concrete in the mold, a support bar is provided on the outer peripheral surface of the piles. A joint fitting having a notch portion into which the support bar is fitted, and a separator holding portion pivotally supported by the joint fitting, so that the surface thereof is in contact with the outer peripheral surface of the pile-shaped member. The notch is a semicircular recess having a semicircular shape A receiving portion that communicates with the semicircular recess and guides the support bar to the semicircular recess from the opening of the notch, and the inner edge of the receiving portion has the support A working space is formed by excavating one of the grounds separated by the pile-shaped member group, using a separator fixing member that protrudes so that a fixing tool that presses the bar toward the semicircular concave portion can be put in and out. After that, one end of the separator is rotatably supported by the support bar through the separator fixing member, and a mold is constructed by supporting the plate member for the mold at the other end of the separator. By filling the filler in the frame, the support bar is directly fixed to the pile-shaped member made of steel pipe or the like, so there is no need to use parts such as spacers, and the number of parts can be reduced and the cost can be reduced. Can also be installed It is possible to readily through the separator stake-like member made of steel or the like to install the formwork in, cost reduction can be achieved by it improves workability.

また、本発明において、前記受け入れ部は、前記半円状凹部の一方の開口縁部を要とする扇型状に形成されたことにより、セパレータ固定用部材を支持棒材に容易に固定することができる。   Further, in the present invention, the receiving portion is formed in a fan shape that requires one opening edge of the semicircular recess, so that the separator fixing member can be easily fixed to the support bar. Can do.

さらに本発明において、前記ジョイント金具には、前記セパレータ保持部が枢支される枢支孔が前記支持棒材の軸心から前記セパレータの軸心と直交する方向に間隔を隔てて形成されるとともに、前記切欠き部の開口縁部が支持棒材を支持させた杭状部材に当接するように形成されたことにより、ジョイント金具が支持棒材から外れる方向の移動を規制することができ、安定した固定状態を維持することができる。 Further, in the present invention, the joint fitting is formed with a pivot hole in which the separator holding portion is pivotally spaced from the axis of the support bar in a direction perpendicular to the axis of the separator. The opening edge of the notch is formed so as to abut on the pile-shaped member that supports the support bar, so that the movement of the joint bracket in the direction away from the support bar can be restricted and stable. The fixed state can be maintained.

更に又本発明において、前記ジョイント金具は、前記切欠き部開口縁部に該開口縁より外向きに傾斜した傾斜部が形成されたことにより、円筒状の杭状部材にセパレータ固定用部材を好適に対応させることができる。   Furthermore, in the present invention, the joint fitting is preferably provided with a separator fixing member for a cylindrical pile-shaped member by forming an inclined portion inclined outward from the opening edge at the opening edge of the notch. It can be made to correspond.

また、本発明において、前記ジョイント金具は、前記半円状凹部の一方の縁部より前記半円の円周方向に張り出した形状の係合部を備えたことにより、支持棒材に対してセパレータ固定用部材を安定した状態に係合させることができる。   Further, in the present invention, the joint fitting includes an engaging portion having a shape projecting in the circumferential direction of the semicircle from one edge of the semicircular recess, so that the separator is separated from the support bar. The fixing member can be engaged in a stable state.

本発明方法に使用するセパレータ固定用部材を示す正面図である。It is a front view which shows the member for separator fixation used for this invention method. 同上の左側面図である。It is a left view same as the above. 図1中のジョイント金具を示す部分破断正面図である。FIG. 2 is a partially cutaway front view showing the joint fitting in FIG. 本発明方法に使用する鋼管の一例を示す斜視図である。It is a perspective view which shows an example of the steel pipe used for this invention method. 本発明方法の杭状部材埋設行程の概略を示す断面図である。It is sectional drawing which shows the outline of the pile-shaped member embedding process of this invention method. 同上の鋼管圧入装置の概略を示す側面図である。It is a side view which shows the outline of a steel pipe press-fitting device same as the above. 同上の作業空間構築行程の概略を示す断面図である。It is sectional drawing which shows the outline of a work space construction process same as the above. 同上の型枠設置行程の概略を示す部分拡大断面図である。It is a partial expanded sectional view which shows the outline of a mold installation process same as the above. 図８中のセパレータ固定用部材の設置状態を示す部分拡大断面図である。It is a partial expanded sectional view which shows the installation state of the separator fixing member in FIG. 本発明方法の充填材充填工程の概略を示す部分拡大断面図である。It is a partial expanded sectional view which shows the outline of the filler filling process of this invention method. 本発明方法により構築された構造物の一例を示す断面図である。It is sectional drawing which shows an example of the structure constructed | assembled by the method of this invention. 従来の型枠設置状態の一例を示す部分拡大断面図である。It is a partial expanded sectional view which shows an example of the conventional formwork installation state. 同上の型枠設置状態の他の一例を示す部分拡大断面図である。It is a partial expanded sectional view which shows another example of a mold installation state same as the above.

次に、本発明方法に使用するセパレータ固定用部材の態様を図面に示した実施例に基づいて説明する。尚、図中符号１はセパレータ固定用部材、２はセパレータである。   Next, the aspect of the separator fixing member used in the method of the present invention will be described based on the embodiments shown in the drawings. In the figure, reference numeral 1 denotes a separator fixing member, and 2 denotes a separator.

セパレータ固定用部材１は、支持棒材Ａと互いに係合するジョイント金具３と、ジョイント金具３に枢支されたセパレータ保持部４とを備え、セパレータ保持部４にセパレータ２の一端を固定することによりセパレータ２が支持棒材Ａに回動可能に支持されるようになっている。 The separator fixing member 1 includes a joint fitting 3 that engages with the support bar A and a separator holding portion 4 pivotally supported by the joint fitting 3, and fixes one end of the separator 2 to the separator holding portion 4. Thus, the separator 2 is rotatably supported by the support bar A.

ジョイント金具３は、一方の側縁側に開口した切欠き部５を有し、この切欠き部５内に支持棒材Ａの外周部が嵌り込むようになっている。   The joint fitting 3 has a cutout portion 5 opened on one side edge side, and the outer peripheral portion of the support bar A is fitted into the cutout portion 5.

切欠き部５は、半円状凹部６と、半円状凹部６と連通した受け入れ部７とをもって構成され、全体としてジョイント金具３の一方の側縁に開口した半割ハート型状となっている。   The notch 5 includes a semicircular recess 6 and a receiving portion 7 that communicates with the semicircular recess 6, and has a half-heart shape that opens to one side edge of the joint fitting 3 as a whole. Yes.

半円状凹部６は、半円状に形成され、この凹部６に支持棒材Ａの外周部の半体が挿入されるようになっている。   The semicircular concave portion 6 is formed in a semicircular shape, and a half body of the outer peripheral portion of the support bar A is inserted into the concave portion 6.

また、半円状凹部６は、半円状の直径方向を切り欠き部５の開口部側から斜め下向きに向けて形成され、支持棒材Ａの上側部に少なくとも半円状凹部６の一部が被さるようになっている。   The semicircular recess 6 is formed with the semicircular diametrical direction obliquely downward from the opening side of the notch 5, and at least a part of the semicircular recess 6 on the upper side of the support bar A Is supposed to be covered.

この半円状凹部６の半円状の一方の縁部には、半円状の円周方向に向けて張り出した係合部８が形成され、この係合部８が支持棒材Ａの外周部に係合するようになっている。   At one edge of the semicircular recess 6 of the semicircular recess 6, an engaging portion 8 is formed projecting in the semicircular circumferential direction, and this engaging portion 8 is the outer periphery of the support bar A. It engages with the part.

受け入れ部７は、半円状凹部６と連通して形成され、切欠き部５の開口部より挿入された支持棒材Ａを半円状凹部６側にガイドするような形状となっている。   The receiving portion 7 is formed so as to communicate with the semicircular recess 6 and is configured to guide the support bar A inserted from the opening of the notch 5 toward the semicircular recess 6.

この受け入れ部７は、半円状凹部６の一方の縁部、即ち係合部８側の縁部を要とした扇型状に形成され、係合部８の先端から受け入れ部７の内側面までの距離は、支持棒材Ａの直径より大きく形成されている。   The receiving portion 7 is formed in a fan shape that requires one edge of the semicircular recess 6, that is, the edge on the engaging portion 8 side, and the inner surface of the receiving portion 7 from the tip of the engaging portion 8. Is formed larger than the diameter of the support bar A.

また、この受け入れ部７の内側面より半円状凹部６側に向けて出し入れ可能に固定用具９が突出し、切欠き部５内に挿入された支持棒材Ａを半円状凹部６側に向けて押圧するようになっている。 Further, the fixing tool 9 protrudes from the inner surface of the receiving portion 7 toward the semicircular recess 6 side so as to be able to be taken in and out, and the support bar A inserted into the notch 5 is directed toward the semicircular recess 6 side. To press.

この固定用具９には、例えばジョイント金具３内を貫通して形成されたねじ孔１０に螺合させた固定用ボルトを使用し、この固定用ボルト９をねじ孔１０内で進退させることにより固定用ボルト９の先端部を受け入れ部の内側面より突出させ又はねじ孔１０内に引き込ませるようになっている。 For the fixing tool 9 , for example, a fixing bolt screwed into a screw hole 10 formed so as to penetrate the joint metal fitting 3 is used, and the fixing bolt 9 is fixed by advancing and retracting in the screw hole 10. The front end portion of the bolt 9 is protruded from the inner surface of the receiving portion or pulled into the screw hole 10.

また、ジョイント金具３の切欠き部５が開口された側の面は、開口縁より外側に向けて斜めに傾斜した形状の傾斜部１１ａ，１１ｂが形成され、杭状部材Ｂの表面形状に応じて杭状部材Ｂの表面に当接できるようになっている。 In addition, the surface of the joint fitting 3 on the side where the notch portion 5 is opened is formed with inclined portions 11a and 11b that are inclined obliquely outward from the opening edge, depending on the surface shape of the pile- shaped member B. It can come into contact with the surface of the pile-shaped member B.

セパレータ保持部４は、本体部１２の上面部より立ち上げた形状の枢支用立ち上げ部１３を有し、枢支用立ち上げ部１３に形成された貫通孔１４に通した枢支用ボルト１５をジョイント金具３に形成された枢支孔１６に螺合させている。   The separator holding part 4 has a pivoting rising part 13 having a shape raised from the upper surface part of the main body part 12, and a pivoting bolt passed through a through hole 14 formed in the pivoting rising part 13. 15 is screwed into a pivot hole 16 formed in the joint fitting 3.

セパレータ保持部４は、この枢支用ボルト１５を締めつけることによりジョイント金具３に対し固定され、枢支用ボルト１５を緩めることにより回動することができるようになっている。   The separator holding portion 4 is fixed to the joint fitting 3 by tightening the pivot support bolt 15, and can be rotated by loosening the pivot support bolt 15.

尚、枢支孔１６は、支持棒材Ａの軸心からセパレータ２の軸心、即ち引張力が作用する方向と直交する方向に間隔を隔てて形成されている。   The pivot hole 16 is formed at a distance from the axis of the support bar A in the direction perpendicular to the axis of the separator 2, that is, the direction in which the tensile force acts.

また、本体部１２の上面は、円弧状に形成されており、セパレータ保持部４がジョイント金具３に対し回動できるようになっている。 The upper surface of the main body 12 is formed in an arc shape so that the separator holding portion 4 can rotate with respect to the joint fitting 3 .

この本体部１２には、セパレータ２の端部を固定する固定手段として固定用ねじ孔１７が形成されており、この固定用ねじ孔１７にセパレータ２の端部に形成されたボルト部２ａを螺合させることによりセパレータ２がセパレータ保持部４に固定されるようになっている。   The main body 12 is formed with a fixing screw hole 17 as a fixing means for fixing the end of the separator 2, and the bolt 2 a formed at the end of the separator 2 is screwed into the fixing screw hole 17. By combining, the separator 2 is fixed to the separator holding part 4.

この固定用ねじ孔１７は、その中心軸の延長線上にジョイント金具３の枢支孔１６が位置するように形成されている。   The fixing screw hole 17 is formed so that the pivotal support hole 16 of the joint fitting 3 is positioned on the extension line of the central axis.

次に、このセパレータ固定用部材１を使用した本発明方法に関し図４〜図１１について説明する。   Next, the method of the present invention using this separator fixing member 1 will be described with reference to FIGS.

まず、杭状部材Ｂを構成する鋼管Ｂ１の製造工場において図４に示すように、鋼管Ｂ１の外周面に丸棒状の鉄筋からなる支持棒材Ａ，Ａ...をその表面が鋼管Ｂ１の外周面に接するように予め溶接により固定しておく。 First, as shown in FIG. 4 in the manufacturing factory of a steel pipe B1 constituting the Kuijo member B, the support rod A consisting of a round bar-shaped reinforcing bar on the outer peripheral surface of the steel pipe B1, A ... a is the surface of the steel pipe B1 It fixes beforehand by welding so that it may touch an outer peripheral surface.

次に、この鋼管Ｂ１，Ｂ１...を施工現場に構築された竪穴２０に搬入し、図５に示すように、地盤２１中にその長さ方向を水平方向に向けるとともに、互いに隣接した配置に埋設し杭状部材群２２を形成する。 Next, the steel pipes B1, B1... Are carried into the pit 20 constructed at the construction site, and as shown in FIG. The pile-shaped member group 22 is formed by being embedded in

各杭状部材Ｂの埋設は、図６に示すように、竪穴２０内に鋼管Ｂ１をその長さ方向を水平方向に向けて配置し、その鋼管Ｂ１の内部にアースオーガ等の掘削装置２３を挿入し前方の地盤２１を掘削するとともに、推進機２４を用いて鋼管Ｂ１を前方に向けて圧入し、この工程を各鋼管Ｂ１の後端側に新たな鋼管Ｂ１を継ぎ足しながら所定長さに到達するまで行う。尚、各鋼管Ｂ１は後述する作業空間２５側に支持棒材Ａが配置されように埋設する。 As shown in FIG. 6, each pile-shaped member B is embedded by placing a steel pipe B1 in the pit hole 20 with its length direction oriented in the horizontal direction, and an excavating device 23 such as an earth auger inside the steel pipe B1. Insert and excavate the front ground 21, and press the steel pipe B1 forward using the propulsion device 24. This process reaches a predetermined length while adding a new steel pipe B1 to the rear end side of each steel pipe B1. Do until you do. In addition, each steel pipe B1 is embed | buried so that the support bar A may be arrange | positioned at the working space 25 side mentioned later.

杭状部材群２２を形成した後、杭状部材群２２に隔てられた一方の地盤を掘削して図７に示すように作業空間２５を形成する。この掘削により互いに隣り合う杭状部材Ｂの四半体部分を作業空間２５内に露出させる。そして、露出した部分を清掃した後、図８、図９に示すように、セパレータ固定用部材１を予め杭状部材Ｂの外周面に固定しておいた支持棒材Ａに取り付ける。 After the pile-shaped member group 22 is formed, one ground separated by the pile-shaped member group 22 is excavated to form a work space 25 as shown in FIG. By this excavation, the quarter parts of the pile-shaped members B adjacent to each other are exposed in the work space 25. And after cleaning the exposed part, as shown in FIG. 8, FIG. 9, the member 1 for fixing a separator is attached to the support bar A fixed to the outer peripheral surface of the pile-shaped member B previously.

このセパレータ固定用部材１を支持棒材Ａに取り付けるには、固定用ボルト９の先端をねじ孔１０内に収容しておき、その状態で支持棒材Ａにジョイント金具３を係合させる。   In order to attach the separator fixing member 1 to the support bar A, the tip of the fixing bolt 9 is accommodated in the screw hole 10, and the joint fitting 3 is engaged with the support bar A in this state.

このとき、ジョイント金具３の傾斜部１１ａ，１１ｂが杭状部材Ｂの表面に当接し、自動的に位置決めがなされる。 At this time, the inclined portions 11a and 11b of the joint fitting 3 come into contact with the surface of the pile-shaped member B , and positioning is automatically performed.

そして、固定用ボルト９を螺進させて受け入れ部７の内側面より半円状凹部側６に突出させることにより固定用ボルト９の先端が支持棒材Ａの表面を半円状凹部側に押圧し、これにより支持棒材Ａに対しジョイント金具３が固定される。   Then, the fixing bolt 9 is screwed and protruded from the inner surface of the receiving portion 7 to the semicircular recess side 6 so that the tip of the fixing bolt 9 presses the surface of the support bar A toward the semicircular recess side. Thus, the joint fitting 3 is fixed to the support bar A.

次に、セパレータ保持部４にセパレータボルト２の一端２ａを螺合させて固定するとともに、他端に型枠用板材Ｃ１を固定する。 Next, one end 2a of the separator bolt 2 is screwed and fixed to the separator holding portion 4, and the mold plate member C1 is fixed to the other end.

このとき、ジョイント金具３に対するセパレータ保持部４の角度を調整するとともに、板材固定用ナット２６の締め付け位置を調整することにより型枠用板材Ｃ１を所望の位置に配置し、枢支用ボルト１５を締めつけセパレータ保持部４をジョイント金具３に固定する。 At this time, the angle of the separator holding part 4 with respect to the joint fitting 3 is adjusted, and the fastening position of the plate material fixing nut 26 is adjusted so that the formwork plate material C1 is disposed at a desired position, and the pivot bolt 15 is attached. The fastening separator holding part 4 is fixed to the joint metal fitting 3.

そして、型枠Ｃの設置が完了した後、図１０に示すように、型枠Ｃ内にモルタル等の充填材２７を充填する。このとき、型枠Ｃは、内側より充填材２７によって外向きの圧力を受け、セパレータ２には、その軸心方向に引張力が作用する。   Then, after the installation of the mold C is completed, the mold C is filled with a filler 27 such as mortar as shown in FIG. At this time, the mold C receives an outward pressure from the inside by the filler 27, and a tensile force acts on the separator 2 in the axial direction.

この引張力によりジョイント金具３には、開口下側縁部１１ｂを杭状部材Ｂ側に押す方向の回転モーメントが生じ、それにより開口下側縁部が杭状部材Ｂの外周面に押し当てられジョイント金具３は杭状部材Ｂより反力を受ける。それによりジョイント金具３が支持棒材Ａより外れる方向に回動することが規制され安定した状態でジョイント金具３が支持棒材Ａに固定された状態が維持される。それにより充填材２７の圧力による型枠Ｃの変形を抑えることができる。 Due to this tensile force, a rotational moment is generated in the joint fitting 3 in the direction of pushing the opening lower edge portion 11b toward the pile-shaped member B, whereby the opening lower edge portion is pressed against the outer peripheral surface of the pile-shaped member B. The joint fitting 3 receives a reaction force from the pile-shaped member B. As a result, the joint metal fitting 3 is prevented from rotating in the direction away from the support bar A, and the joint metal 3 is fixed to the support bar A in a stable state. Thereby, deformation of the mold C due to the pressure of the filler 27 can be suppressed.

そして、モルタル等の充填材２７を十分養生して硬化させ、各杭状部材Ｂ，Ｂ間を接合する。最後に、型枠用板材Ｃ１をセパレータ２より取り外し、セパレータ２の硬化した充填材表面より突出した部分を切断し作業が完了する。 Then, the filler 27 such as mortar is sufficiently cured and cured, and the pile-shaped members B and B are joined. Finally, the plate material C1 for formwork is removed from the separator 2, and the portion protruding from the cured filler surface of the separator 2 is cut to complete the operation.

尚、上述の実施例では、セパレータをセパレータ保持部に螺合させることにより固定した例について説明したが、ピン止め等のその他の固定手段により固定するようにしてもよく、セパレータとセパレータ保持部とを一体に形成してもよい。   In the above-described embodiment, the example in which the separator is fixed by being screwed to the separator holding portion has been described. However, the separator and the separator holding portion may be fixed by other fixing means such as pinning. May be formed integrally.

Ａ 支持棒材
Ｂ 杭状部材
Ｂ１ 鋼管
Ｃ 型枠
Ｃ１ 型枠用板材
１ セパレータ固定用部材
２ セパレータ
３ ジョイント金具
４ セパレータ保持部
５ 切欠き部
６ 半円状凹部
７ 受け入れ部
８ 係合部
９ 固定用具（固定用ボルト）
１０ ねじ孔
１１ 傾斜部
１２ 本体部
１３ 枢支用立ち上げ部
１４ 貫通孔
１５ 枢支用ボルト
１６ 枢支孔
１７ 固定用ねじ孔
２０ 竪穴
２１ 地盤
２２ 杭状部材群
２３ 掘削装置
２４ 推進機
２５ 作業空間
２６ 板材固定用ナット
２７ 充填材 A Support bar
B Pile-shaped member
B1 Steel pipe C Formwork
C1 Formwork plate 1 Separator fixing member 2 Separator 3 Joint metal fitting 4 Separator holding part 5 Notch part 6 Semicircular recess 7 Receiving part 8 Engaging part 9 Fixing tool (fixing bolt)
DESCRIPTION OF SYMBOLS 10 Screw hole 11 Inclined part 12 Main-body part 13 Pivoting support part 14 Through-hole 15 Pivoting bolt 16 Pivoting hole 17 Fixing screw hole 20 Bore hole 21 Ground 22 Pile-shaped member group 23 Excavator 24 Propulsion machine 25 Work Space 26 Plate material fixing nut 27 Filler

Claims (5)

地盤中に複数の杭状部材をその長さ方向を水平方向に向け、且つ互いに隣接する配置に埋設して杭状部材群を形成した後、該杭状部材群により隔てられた一方の地盤を掘削して作業空間を形成し、該作業空間内に露出した前記各杭状部材にセパレータを介して型枠用板材を支持させて型枠を形成し、該型枠内にコンクリート等の充填材を充填することにより前記各杭状部材間を接合させる地下構造物の構築方法において、
前記杭状部材の外周面に支持棒材をその表面が前記杭状部材の外周面と接するように予め固定しておき、
前記支持棒材が嵌り込む切欠き部を有するジョイント金具と、該ジョイント金具に枢支されたセパレータ保持部とを備え、該切欠き部は、半円状の半円状凹部と、該半円状凹部と連通して前記切欠き部の開口部より前記支持棒材を前記半円状凹部側にガイドする受け入れ部とをもって構成され、該受け入れ部の内側縁には、前記支持棒材を前記半円状凹部側に押圧する固定用具を出し入れ可能に突出させてなるセパレータ固定用部材を使用し、
前記杭状部材群により隔てられた一方の地盤を掘削して作業空間を形成した後、前記セパレータ固定用部材を介して前記支持棒材にセパレータの一端を回動可能に支持させるとともに、該セパレータの他端に型枠用板材を支持させて型枠を構築し、該型枠内に前記充填材を充填することを特徴としてなる地下構造物の構築方法。 A plurality of pile-shaped members in the ground are oriented in the horizontal direction in the horizontal direction and embedded in an arrangement adjacent to each other to form a pile-shaped member group, and then one ground separated by the pile-shaped member group is A work space is excavated to form a mold frame by supporting a plate material for the mold frame through each separator on each pile-shaped member exposed in the work space, and a filler such as concrete is formed in the mold frame In the construction method of the underground structure that joins between the pile-shaped members by filling
The support bar is fixed beforehand to the outer peripheral surface of the pile-shaped member so that the surface thereof is in contact with the outer peripheral surface of the pile-shaped member,
A joint fitting having a notch portion into which the support bar is fitted, and a separator holding portion pivotally supported by the joint fitting, the notch portion being a semicircular semicircular recess and the semicircle Jo recess and communicating is configured with a receiving portion for guiding the supporting bar from the opening of the notch in the semicircular concave side, the inner edge of the receiving portion, the said support rod Using a separator fixing member that protrudes so that a fixing tool that presses into the semicircular concave portion can be taken in and out,
After forming the work space by drilling one of the ground which is separated by the stake member group, the one end of the separator causes rotatably supported by the support bar through the separator fixing member, the separator A method for constructing an underground structure is characterized in that a formwork is constructed by supporting a formwork plate at the other end of the mold, and the filler is filled in the formwork. 前記受け入れ部は、前記半円状凹部の一方の開口縁部を要とする扇型状に形成された請求項１に記載の地下構造物の構築方法。   The construction method for an underground structure according to claim 1, wherein the receiving portion is formed in a fan shape that requires one opening edge of the semicircular recess. 前記ジョイント金具には、前記セパレータ保持部が枢支される枢支孔が前記支持棒材の軸心から前記セパレータの軸心と直交する方向に間隔を隔てて形成されるとともに、前記切欠き部の開口縁部が支持棒材を支持させた前記杭状部材に当接するように形成された請求項１又は２に記載の地下構造物の構築方法。 In the joint fitting, a pivot hole in which the separator holding portion is pivotally formed is formed at a distance from the axis of the support bar in a direction perpendicular to the axis of the separator, and the notch The construction method of the underground structure of Claim 1 or 2 formed so that the opening edge part of this might contact | abut to the said pile-shaped member which supported the support bar. 前記ジョイント金具は、前記切欠き部開口縁部に該開口縁より外向きに傾斜した傾斜部が形成された請求項１、２又は３に記載の地下構造物の構築方法。   The construction method for an underground structure according to claim 1, wherein the joint fitting is formed with an inclined portion inclined outward from the opening edge at the opening edge of the notch. 前記ジョイント金具は、前記半円状凹部の一方の縁部より前記半円の円周方向に張り出した形状の係合部を備えた請求項１〜３又は４に記載の地下構造物の構築方法。   The method for constructing an underground structure according to claim 1, wherein the joint fitting includes an engaging portion having a shape projecting in a circumferential direction of the semicircle from one edge of the semicircular recess. .
JP2010286218A 2010-12-22 2010-12-22 Construction method of underground structure Active JP5500483B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010286218A JP5500483B2 (en) 2010-12-22 2010-12-22 Construction method of underground structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010286218A JP5500483B2 (en) 2010-12-22 2010-12-22 Construction method of underground structure

Publications (2)

Publication Number Publication Date
JP2012132239A JP2012132239A (en) 2012-07-12
JP5500483B2 true JP5500483B2 (en) 2014-05-21

Family

ID=46648135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010286218A Active JP5500483B2 (en) 2010-12-22 2010-12-22 Construction method of underground structure

Country Status (1)

Country Link
JP (1) JP5500483B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022039013A1 (en) 2020-08-19 2022-02-24 大日本印刷株式会社 Barrier film, and wavelength conversion sheet, back light, and liquid crystal display device which use same
CN116324267B (en) 2020-08-19 2024-05-14 大日本印刷株式会社 Barrier film, wavelength conversion sheet, backlight, liquid crystal display device, and method for selecting barrier film using same
JPWO2022196756A1 (en) 2021-03-18 2022-09-22
WO2022239819A1 (en) 2021-05-12 2022-11-17 大日本印刷株式会社 Barrier film for wavelength conversion sheet, wavelength conversion sheet, backlight, and liquid crystal display device using barrier film, and method for selecting barrier film for wavelength conversion sheet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6235096U (en) * 1985-08-12 1987-03-02
JP3084498B2 (en) * 1992-04-06 2000-09-04 大成建設株式会社 Steel pipe pile head treatment method
JP3057036U (en) * 1998-08-27 1999-03-26 喜輝 大平 Concrete formwork support

Also Published As

Publication number Publication date
JP2012132239A (en) 2012-07-12

Similar Documents

Publication Publication Date Title
JP5199166B2 (en) Foundation pile structure by site construction and construction method of foundation pile
JP5500483B2 (en) Construction method of underground structure
KR20100015601A (en) Spiral steel pipe pile
JP2010090608A (en) Method for constructing underground space and structure of the underground space
JP2011106190A (en) Liner plate connection structure and liner plate connection structural body
JPWO2006041154A1 (en) Underground obstacle removal apparatus, excavation unit, and underground obstacle removal method using the same
KR101403213B1 (en) Construction method of driven grout pile
JP2010121288A (en) Pile rotating press-in method, and rotary press-in pile for use in the method
JP3192516U (en) Steel pipe concrete composite pile
JP6735138B2 (en) Construction method of retaining wall structure and retaining wall structure
JP5775750B2 (en) Steel pipe concrete composite pile
KR100994374B1 (en) Apparatus for driving pile by rotation and method thereof
JP3839461B1 (en) Steel pipe pole foundation and its foundation method
JP4537358B2 (en) Connection method of concrete box
JP6161370B2 (en) Backing prevention device
JP2012144913A (en) Circular vertical shaft construction method for jacking method
JP2004534167A (en) How to make a circular hole in the ground
JP2018031225A (en) Installation device for pre-lined steel sheet pile for natural ground reinforcement
JP4251628B2 (en) Boundary pile burial tool
JP6856370B2 (en) Casing coupling structure
JP2507827B2 (en) Underground method of pipe
JP6009294B2 (en) Manhole construction method using steel circular casing
JPH10114954A (en) Manhole body block applied to small-bore pipe jacking and method of manhole construction
JP5161948B2 (en) Promotion method
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: 20120925

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130725

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130731

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130920

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: 20140205

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140228

R150 Certificate of patent or registration of utility model

Ref document number: 5500483

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250