JP5080347B2 - Placing ruler and pile material placing method - Google Patents

Placing ruler and pile material placing method Download PDF

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JP5080347B2
JP5080347B2 JP2008114963A JP2008114963A JP5080347B2 JP 5080347 B2 JP5080347 B2 JP 5080347B2 JP 2008114963 A JP2008114963 A JP 2008114963A JP 2008114963 A JP2008114963 A JP 2008114963A JP 5080347 B2 JP5080347 B2 JP 5080347B2
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pile
guide frames
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JP2009264003A (en
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憲敬 福永
秀人 依田
幸治 川口
啓介 今北
健 鈴木
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Nishimatsu Construction Co Ltd
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Description

本発明は、鋼管矢板等の杭材を、バイブロハンマ等の振動式杭打機によって地中に打設する際に、この杭材を鉛直方向にガイドする打設用定規と、この打設用定規を用いて、前記杭材を地中に鉛直に打設する杭材の打設方法とに関する。   The present invention provides a driving ruler for guiding a pile material such as a steel pipe sheet pile in the vertical direction when the pile material is driven into the ground by a vibratory pile driving machine such as a vibro hammer, and the driving ruler. It is related with the placement method of the pile material which places the said pile material vertically in the ground.

従来、地中に打設される鋼管矢板等の杭材の打設精度を確保するために、予め特許文献１に記載のような定規材および回転防止治具を備える打設用定規を、杭材が打設される位置の地面に設置しておき、この打設用定規によって杭材をガイドしながら、杭材の上端部を把持するバイブロハンマ等の振動式杭打機を用いて、この杭材を地中に打設する方法が行われている。
特開２０００−２５７０６５号公報 Conventionally, in order to secure the accuracy of placing pile materials such as steel pipe sheet piles that are placed in the ground, a ruler for placement provided with a ruler material and an anti-rotation jig as described in Patent Document 1 in advance is used. This pile is placed on the ground where the material is to be placed, and the pile material is guided by this placement ruler, and a vibration pile driver such as a vibrator hammer that grips the upper end of the pile material is used. There is a method of placing materials in the ground.
JP 2000-257065 A

ところで、上述のような打設用定規は、この打設用定規と、杭材の上端部を把持する振動式杭打機とが接触しないように、極力、地表面に近い高さに設けられる。
ところが、打設用定規を地表面に近い高さに設けると、振動式杭打機によって打設される際の杭材のブレを防止しにくい場合があるため、杭材のブレを確実に防止することが可能な技術の開発が望まれていた。 By the way, the placement ruler as described above is provided as close to the ground surface as possible so that the placement ruler and the vibration pile driver for gripping the upper end portion of the pile material do not come into contact with each other. .
However, if the placement ruler is installed at a height close to the ground surface, it may be difficult to prevent the pile material from shaking when it is driven by a vibration pile driver. The development of technology that can do this has been desired.

本発明の課題は、杭材の打設精度を向上させることが可能な打設用定規および杭材の打設方法を提供することを目的とする。   An object of the present invention is to provide a placement ruler and a pile material placement method capable of improving the pile material placement accuracy.

以上の課題を解決するため、請求項１に記載の発明は、鋼管矢板等の杭材を、バイブロハンマ等の振動式杭打機によって地中に打設する際に、この杭材を所定の打設方向にガイドする打設用定規において、
下端部が地中に打設される少なくとも一対の導杭と、これら少なくとも一対の導杭間に架設されるとともに地面に接する第１受材と、この第１受材よりも上方に位置するとともに前記少なくとも一対の導杭の上端部間に架設される第２受材とを有する支持フレームを、所定の間隔をあけて複数並設することによって形成される支持部と、
この支持部の複数の第１受材間に架設されるとともに、前記杭材を、この杭材の打設方向に沿って摺動可能に挟持する一対の第１導枠と、
前記支持部の複数の第２受材間に架設されるとともに、前記杭材を、この杭材の打設方向に沿って摺動可能に挟持する一対の第２導枠とを備えており、
前記一対の第２導枠は、これら一対の第２導枠を、前記複数の第２受材の長さ方向に沿ってスライドさせるスライド手段を備えていることを特徴とする。 In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a method of driving a pile material such as a steel pipe sheet pile into the ground by a vibration pile driving machine such as a vibratory hammer. In the placement ruler that guides in the installation direction,
At least a pair of guiding piles whose lower end portions are driven into the ground, a first receiving material which is constructed between these at least a pair of guiding piles and is in contact with the ground, and located above the first receiving material A support portion formed by arranging a plurality of support frames having a second receiving material laid between the upper end portions of the at least one pair of guide piles at predetermined intervals; and
A pair of first guide frames that are laid between the plurality of first receiving members of the support portion and that slidably hold the pile material along the direction of placing the pile material,
A pair of second guide frames that are laid between the plurality of second receiving members of the support portion, and that slidably hold the pile material along the direction of placing the pile material ,
The pair of second guide frames includes a slide unit that slides the pair of second guide frames along a length direction of the plurality of second receiving members .

請求項２に記載の発明は、請求項１に記載の打設用定規において、前記第２受材には、前記一対の第２導枠のスライドを規制するストッパー部材が、この第２受材の長さ方向の所定の位置に着脱可能に設けられていることを特徴とする。 The invention according to claim 2, in striking設用ruler according to claim 1, wherein the second image receiving material, a stopper member for restricting the sliding of the pair of second Shirubewaku is, the second receiving material It is detachably provided at a predetermined position in the length direction.

請求項３に記載の発明は、請求項２に記載の打設用定規を用いて、前記杭材を地中に鉛直に打設する杭材の打設方法であって、
前記打設用定規を、前記杭材が打設される位置に設置しておき、
前記杭材を、前記一対の第１導枠および一対の第２導枠によって挟持するとともに、前記一対のストッパー部材によって、前記一対の第２導枠が互いに離間する方向にスライドすることを規制し、
前記杭材を、この杭材の上端部が前記一対の第２導枠の近傍まで達するように、前記振動式杭打機によって打設した後、前記一対のストッパー部材を前記第２受材から取り外してから、前記一対の第２導枠を、これら一対の第２導枠が互いに離間する方向にスライドさせ、
その後、前記杭材を、この杭材の上端部が前記一対の第１導枠の近傍まで達するように、前記振動式杭打機によって打設することを特徴とする。 The invention described in claim 3 is a pile material placing method in which the pile material is vertically placed in the ground using the placement ruler according to claim 2 ,
The placement ruler is installed at a position where the pile material is placed,
The pile material is sandwiched between the pair of first guide frames and the pair of second guide frames, and the pair of stopper members restricts the pair of second guide frames from sliding in a direction away from each other. ,
After the pile material is driven by the vibration pile driver so that the upper end portion of the pile material reaches the vicinity of the pair of second guide frames, the pair of stopper members are separated from the second receiving material. After removing, the pair of second guide frames are slid in a direction in which the pair of second guide frames are separated from each other,
Then, the pile material is driven by the vibration pile driver so that the upper end portion of the pile material reaches the vicinity of the pair of first guide frames.

本発明によれば、杭材を、支持部の複数の第１受材間に架設される一対の第１導枠によって、地表面に近い高さで挟持できるとともに、支持部の複数の第２受材間に架設される一対の第２導枠によって、一対の第１導枠によって挟持された杭材の地表面に近い高さの部分よりも上方で挟持できるので、杭材の長さ方向に沿って２箇所で杭材を摺動可能に挟持できることとなる。したがって、振動式杭打機によって打設される際の杭材のブレを確実に防止することができるので、杭材の打設精度を向上させることが可能となる。   According to the present invention, the pile material can be held at a height close to the ground surface by the pair of first guide frames provided between the plurality of first receiving members of the support portion, and the plurality of second portions of the support portion. The pair of second guide frames installed between the receiving members can be clamped above the portion of the pile material sandwiched between the pair of first guide frames at a height close to the ground surface. The pile material can be slidably held at two locations along the line. Therefore, it is possible to reliably prevent the pile material from being shaken when being driven by the vibration pile driving machine, so that it is possible to improve the driving accuracy of the pile material.

以下、図面を参照して本発明の実施の形態について説明する。   Embodiments of the present invention will be described below with reference to the drawings.

本実施の形態の打設用定規１は、図１〜図３に示すように、鋼管矢板等の杭材２を、バイブロハンマ等の振動式杭打機３によって地中に打設する際に、この杭材２を所定の打設方向にガイドするものであり、下端部が地中に打設される少なくとも一対の導杭１２と、これら少なくとも一対の導杭１２間に架設されるとともに地面に接する第１受材１３と、この第１受材１３よりも上方に位置するとともに前記少なくとも一対の導杭１２の上端部間に架設される第２受材１４とを有する支持フレーム１１を、所定の間隔をあけて複数並設することによって形成される支持部１０と、この支持部１０の複数の第１受材１３間に架設されるとともに、前記杭材２を、この杭材２の打設方向に沿って摺動可能に挟持する一対の第１導枠２０と、前記支持部１０の複数の第２受材１４間に架設されるとともに、前記杭材２を、この杭材２の打設方向に沿って摺動可能に挟持する一対の第２導枠３０とを備えている。   As shown in FIGS. 1 to 3, the placement ruler 1 according to the present embodiment, when placing a pile material 2 such as a steel pipe sheet pile into the ground by a vibration pile driving machine 3 such as a vibratory hammer, The pile material 2 is guided in a predetermined placement direction, and at least a pair of guide piles 12 whose lower end portions are placed in the ground, and between the at least one pair of guide piles 12 and on the ground A support frame 11 having a first receiving material 13 in contact therewith and a second receiving material 14 that is positioned above the first receiving material 13 and is laid between the upper ends of the at least one pair of guide piles 12 is Is installed between the plurality of first receiving members 13 of the supporting portion 10 and the supporting portion 10 formed by arranging a plurality of them in parallel with each other. A pair of first guide frames 20 slidably held along the installation direction; A pair of second guide frames 30 are provided between the plurality of second receiving members 14 of the portion 10 and sandwich the pile material 2 slidably along the direction of placing the pile material 2. ing.

なお、所定の打設方向とは、前記杭材２が地中に打設される方向であり、本実施の形態において前記杭材２は鉛直方向に打設される。また、鉛直方向だけに限らず、例えば斜め方向でもよく、適宜変更可能である。   The predetermined placement direction is a direction in which the pile material 2 is placed in the ground, and in the present embodiment, the pile material 2 is placed in the vertical direction. Moreover, not only the vertical direction but also an oblique direction, for example, can be appropriately changed.

ここで、本実施の形態の杭材２は、上述のように鋼管矢板が用いられているが、シートパイル等でも良い。
また、鋼管矢板である前記杭材２は、この杭材２の両側に継手部２ａが溶接にて取り付けられており、隣り合う杭材２の隣り合う継手部２ａ同士を噛み合わせることによって、鋼管矢板基礎や土留壁等を形成できる。 Here, although the steel pipe sheet pile is used for the pile material 2 of this Embodiment as mentioned above, a sheet pile etc. may be sufficient.
Moreover, the said pile material 2 which is a steel pipe sheet pile has the joint part 2a attached to the both sides of this pile material 2 by welding, and it meshes the adjacent joint parts 2a of the adjacent pile material 2 by steel pipes. Can form sheet pile foundations and retaining walls.

本実施の形態の振動式杭打機３としては、上述のように、振動によって周辺地盤を緩めることにより前記杭材２を地中に打設するバイブロハンマが用いられている。
この振動式杭打機３は、図３および図４に示すように、下端部に、前記杭材２の上端部を把持する把持部３ａを備えており、上端部が、クレーン等のワイヤー４に接続されて吊り下げられている。 As described above, a vibratory hammer for driving the pile material 2 into the ground by loosening the surrounding ground by vibration is used as the vibration pile driving machine 3 of the present embodiment.
As shown in FIGS. 3 and 4, the vibration pile driving machine 3 includes a grip portion 3 a that grips the upper end portion of the pile material 2 at the lower end portion, and the upper end portion is a wire 4 such as a crane. It is connected and suspended.

一方、前記支持部１０は、上述のように、前記少なくとも一対の導杭１２と、前記第１受材１３と、前記第２受材１４とを有する支持フレーム１１を、所定の間隔をあけて複数並設することによって形成されている。   On the other hand, as described above, the support portion 10 has a support frame 11 having the at least one pair of guide piles 12, the first receiving material 13, and the second receiving material 14 at a predetermined interval. It is formed by arranging two or more.

また、前記支持フレーム１１は、図３および図４に示すように、前記少なくとも一対の導杭１２間に、前記第１受材１３を架設するとともに、前記少なくとも一対の導杭１２の上端部間に、前記第２受材１４を架設することによって、略門型に形成されている。   As shown in FIGS. 3 and 4, the support frame 11 has the first receiving member 13 installed between the at least one pair of guide piles 12 and between the upper end portions of the at least one pair of guide piles 12. In addition, the second receiving member 14 is constructed to have a substantially gate shape.

前記少なくとも一対の導杭１２は、例えばＨ形鋼が用いられており、図２〜図４に示すように、これら少なくとも一対の導杭１２の下端部が地中に打設されている。また、これら少なくとも一対の導杭１２は、トランシット等によって鉛直精度を確認・修復しながら地中に打設して、地面に対して鉛直方向に立設させることが望ましい。   For example, H-shaped steel is used for the at least one pair of guide piles 12, and as shown in FIGS. 2 to 4, the lower ends of the at least one pair of guide piles 12 are driven into the ground. In addition, it is desirable that these at least a pair of guide piles 12 be placed in the ground while confirming / repairing the vertical accuracy using a transit or the like, and erected in the vertical direction with respect to the ground.

前記第１受材１３は、図２に示すように、例えば溝形鋼が用いられており、前記所定の間隔をあけて複数並設する支持フレーム１１の第１受材１３間に、前記一対の第１導枠２０が架設されて固定されている。   As shown in FIG. 2, for example, channel steel is used for the first receiving member 13, and the pair of first receiving members 13 is arranged between the first receiving members 13 of the support frame 11 arranged in parallel at the predetermined interval. The first guide frame 20 is constructed and fixed.

前記第２受材１４は、図２に示すように、例えばＨ形鋼が用いられており、前記所定の間隔をあけて複数並設する支持フレーム１１の第２受材１４間に、前記一対の第２導枠３０が架設されている。   As shown in FIG. 2, for example, H-shaped steel is used for the second receiving material 14, and the pair of the second receiving materials 14 are arranged between the second receiving materials 14 of the support frame 11 arranged in parallel at a predetermined interval. The second guide frame 30 is constructed.

なお、本実施の形態において、前記少なくとも一対の導杭１２は、図１〜図４に示すように、前記導杭１２が一対ずつ、前記支持部１０の長さ方向に沿って所定の間隔をあけて打設された状態となっているが、これに限るものではない。すなわち、例えば比較的軟弱な地盤に前記打設用定規１を設置する際は、前記導杭１２を３本以上ずつ、前記支持部１０の長さ方向に沿って所定の間隔をあけて打設するようにしてもよい。これによって、前記打設用定規１が設置される地盤が比較的軟弱であっても、この打設用定規１の設置状態を安定させて確実に設置することができる。
また、このように前記導杭１２を多数本ずつ打設する際は、前記第１受材１３および第２受材１４も、長さの長い鋼材を用いて対応することが好ましい。 In the present embodiment, as shown in FIGS. 1 to 4, the at least one pair of guide piles 12 has a predetermined interval along the length direction of the support portion 10. Although it is in a state where it has been opened, it is not limited to this. That is, for example, when installing the placement ruler 1 on a relatively soft ground, the guide piles 12 are placed three or more at a predetermined interval along the length direction of the support portion 10. You may make it do. Thereby, even if the ground on which the placement ruler 1 is installed is relatively soft, the installation state of the placement ruler 1 can be stably and reliably installed.
Further, when placing a large number of the guiding piles 12 one by one in this way, it is preferable that the first receiving material 13 and the second receiving material 14 also correspond to each other using a long steel material.

一方、前記一対の第１導枠２０は、図３および図４に示すように、例えばＨ形鋼が用いられており、前記所定の間隔をあけて複数並設する支持フレーム１１の第１受材１３間に架設固定されている。また、これら一対の第１導枠２０同士の離間寸法は、前記杭材２の直径と略等しくなるように設定されている。   On the other hand, as shown in FIGS. 3 and 4, for example, H-shaped steel is used for the pair of first guide frames 20, and a plurality of first receiving frames 11 are arranged side by side at a predetermined interval. It is installed and fixed between the members 13. Further, the distance between the pair of first guide frames 20 is set to be substantially equal to the diameter of the pile material 2.

また、前記一対の第２導枠３０は、図３および図４に示すように、例えばＨ形鋼が用いられており、前記所定の間隔をあけて複数並設する支持フレーム１１の第２受材１４間に架設されている。
そして、これら一対の第２導枠３０は、図２，図５〜図７に示すように、これら一対の第２導枠３０を、前記複数の第２受け材１４の長さ方向に沿ってスライドさせるスライド手段３１を備えている。 Further, as shown in FIGS. 3 and 4, for example, H-shaped steel is used for the pair of second guide frames 30, and a plurality of second receiving frames of the support frame 11 arranged in parallel at the predetermined interval are used. It is constructed between the materials 14.
Then, as shown in FIGS. 2 and 5 to 7, the pair of second guide frames 30 is arranged along the length direction of the plurality of second receiving members 14. A slide means 31 for sliding is provided.

このスライド手段３１は、図２に示すように、前記複数の第２受材１４の位置に対応するようにして、前記一対の第２導枠３０の下面に固定されている。
また、このスライド手段３１としては、例えば小型搬送装置が用いられている。この小型搬送装置は、無端状の複数のローラーを備えており、これら複数のローラーによって荷重を均等に受けることができるようになっている。
このスライド手段３１は、図５〜図７に示すように、Ｈ形鋼である前記第２受材１４の両フランジからはみ出さないようにして、この第２受材１４のウェブ上に設置されている。 As shown in FIG. 2, the slide means 31 is fixed to the lower surfaces of the pair of second guide frames 30 so as to correspond to the positions of the plurality of second receiving members 14.
Moreover, as this slide means 31, the small conveying apparatus is used, for example. The small transport device includes a plurality of endless rollers, and can receive a load evenly by the plurality of rollers.
As shown in FIGS. 5 to 7, the sliding means 31 is installed on the web of the second receiving material 14 so as not to protrude from both flanges of the second receiving material 14 which is H-shaped steel. ing.

さらに、このスライド手段３１は、図５〜図７に示すように、Ｈ形鋼である前記第２導枠３０の両フランジとウェブとで囲まれた凹部に嵌め込まれて固定されるとともに、壁部３２ａと底部３２ｂとからなる溝形部材３２と、この溝形部材３２の底部３２ｂに固定される高さ調整金物３３とを介して、前記第２導枠３０に固定されている。
また、このスライド手段３１と前記高さ調整金物３３とは、例えばボルト等によって接合されている。 Further, as shown in FIGS. 5 to 7, the sliding means 31 is fitted and fixed in a concave portion surrounded by both flanges and a web of the second guide frame 30 that is H-shaped steel, and a wall. It is fixed to the second guide frame 30 via a groove-shaped member 32 composed of a portion 32a and a bottom portion 32b, and a height adjusting hardware 33 fixed to the bottom portion 32b of the groove-shaped member 32.
The slide means 31 and the height adjusting hardware 33 are joined by, for example, a bolt or the like.

そして、このように前記一対の第２導枠３０は、これら一対の第２導枠３０を、前記複数の第２受け材１４の長さ方向に沿ってスライドさせるスライド手段３１を備えているので、必要に応じて、前記一対の第２導枠３０を互いに離間させる方向にスライドさせたり、互いに接近させる方向にスライドさせたりすることが可能となる。
これによって、例えば、前記杭材２を地中に深く打設したいという要望があった場合に、前記一対の第２導枠３０を互いに離間させる方向にスライドさせておくことで、これら一対の第２導枠３０と、前記杭材２の上端部を把持する振動式杭打機３とが接触することを確実に防ぐことができる。したがって、前記杭材２を、この杭材２の上端部が前記一対の第１導枠２０の近傍まで達するように、地中に深く打設することができるようになっている。 In this way, the pair of second guide frames 30 include the slide means 31 that slides the pair of second guide frames 30 along the length direction of the plurality of second receiving members 14. If necessary, the pair of second guide frames 30 can be slid in a direction to be separated from each other or slid in a direction to be close to each other.
Thus, for example, when there is a request to place the pile material 2 deeply in the ground, the pair of second guide frames 30 are slid in a direction to be separated from each other. It is possible to reliably prevent the 2-guide frame 30 and the vibrating pile driver 3 that holds the upper end portion of the pile material 2 from coming into contact with each other. Therefore, the pile material 2 can be driven deeply into the ground so that the upper end portion of the pile material 2 reaches the vicinity of the pair of first guide frames 20.

一方、前記第２受材１４には、図５および図６に示すように、前記一対の第２導枠３０のスライドを規制するストッパー部材４０が、この第２受材１４の長さ方向の所定の位置に着脱可能に設けられている。
なお、図５および図６では、前記一対の第２導枠３０の内の一方の第２導枠３０の付近に、前記ストッパー部材４０が設けられている状態を表している。また、図示はしないが、前記一対の第２導枠３０の内の他方の第２導枠３０の付近にも、前記ストッパー部材４０が設けられているものとする。 On the other hand, as shown in FIGS. 5 and 6, the second receiving member 14 is provided with a stopper member 40 that restricts the sliding of the pair of second guide frames 30 in the length direction of the second receiving member 14. It is detachably provided at a predetermined position.
5 and 6 show a state in which the stopper member 40 is provided in the vicinity of one of the pair of second guide frames 30 in the vicinity of one second guide frame 30. FIG. Although not shown, the stopper member 40 is also provided in the vicinity of the other second guide frame 30 of the pair of second guide frames 30.

前記ストッパー部材４０は、Ｈ形鋼である前記第２受材１４のウェブ上の所定の位置に設置固定されている。また、このストッパー部材４０は、前記スライド手段３１または高さ調整金具３３にぶつかることによって、前記スライド手段３１による前記一方の第２導枠３０のスライドを規制できるようになっている。
なお、このストッパー部材４０とは別に、前記第２受材１４には、前記スライド手段３１に当接することによって前記一対の第２導枠３０の前記杭材２方向へのスライドを規制するストッパー部材４１が設置固定されている。このストッパー部材４１は、溶接やボルト接合等によって前記第２受材１４の前記杭材２に近接した位置に設置固定されている。 The stopper member 40 is installed and fixed at a predetermined position on the web of the second receiving member 14 which is H-shaped steel. Further, the stopper member 40 can regulate the sliding of the one second guide frame 30 by the sliding means 31 by hitting the sliding means 31 or the height adjusting bracket 33.
In addition to the stopper member 40, the second receiving member 14 is provided with a stopper member that restricts sliding of the pair of second guide frames 30 in the direction of the pile material 2 by contacting the sliding means 31. 41 is installed and fixed. The stopper member 41 is installed and fixed at a position close to the pile material 2 of the second receiving material 14 by welding, bolt joining or the like.

また、前記一対の第２導枠３０を互いに離間させる方向にスライドさせた際は、図５に示すように、前記スライド手段３１を、複数の前記ストッパー部材４０で挟み込むようにして前記第２受材１４に設置することで、前記第２導枠３０のスライドを確実に防止できるようになっている。
また、前記一対の第２導枠３０を互いに接近させる方向にスライドさせた際は、図６に示すように、前記スライド手段３１を、前記ストッパー部材４０と、前記ストッパー部材４１とで挟み込むようにして前記第２受材１４に設置することで、前記第２導枠３０のスライドを確実に防止できるようになっている。 Further, when the pair of second guide frames 30 are slid in the direction of separating from each other, as shown in FIG. By being installed on the material 14, the sliding of the second guide frame 30 can be reliably prevented.
Further, when the pair of second guide frames 30 are slid in the direction in which they are brought close to each other, the slide means 31 is sandwiched between the stopper member 40 and the stopper member 41 as shown in FIG. Thus, the second guide frame 30 can be reliably prevented from sliding by being installed on the second receiving member 14.

そして、このように前記第２受材１４に、前記ストッパー部材４０が、この第２受材１４の長さ方向の所定の位置に着脱可能に設けられていることから、このストッパー部材４０の装着時は、前記一対の第２導枠３０が前記第２受材１４の長さ方向に沿ってスライドすることを確実に防止できる。これによって、前記一対の第２導枠３０を互いに離間させる方向にスライドさせた後に、これら一対の第２導枠３０をその場に確実に留めておくことができるので、前記一対の第２導枠３０と前記振動式杭打機３とが接触することを、より確実に防ぐことができる。また、前記一対の第２導枠３０を互いに接近させる方向にスライドさせた後に、これら一対の第２導枠３０をその場に確実に留めておくことができるので、前記杭材２の打設時のブレを確実に防止でき、この杭材２の打設精度を向上させることが可能となる。   Since the stopper member 40 is detachably provided on the second receiving member 14 at a predetermined position in the length direction of the second receiving member 14, the stopper member 40 is attached. At this time, it is possible to reliably prevent the pair of second guide frames 30 from sliding along the length direction of the second receiving material 14. Accordingly, after the pair of second guide frames 30 are slid in the direction of separating from each other, the pair of second guide frames 30 can be securely held in place. It can prevent more reliably that the frame 30 and the said vibration type pile driving machine 3 contact. In addition, after the pair of second guide frames 30 are slid in a direction in which the pair of second guide frames 30 approach each other, the pair of second guide frames 30 can be securely held in place. It is possible to reliably prevent the blurring of the time and improve the placing accuracy of the pile material 2.

また、これら一対のストッパー部材４０は、図示しない固定器具によって前記第２受材１４に対して着脱可能に設けられている。
この固定器具としては、例えば万力状の締結金具が用いられており、この締結金具は、略Ｃ型に形成された本体の一端部および他端部に、先端部同士が向き合うようにしてボルトが螺合されてなる。
そして、この締結金具の双方のボルトを締め付けることによって、前記ストッパー部材４０の一端と第２受材１４のフランジとを強固に挟持できるようになっている。前記ストッパー部材４０の取り外し時は、前記ボルトを緩めて締結金具を取り外すだけで、前記ストッパー部材４０を、前記第２受材１４から容易に取り外すことができる。したがって、前記一対の第２導枠３０を、容易にスライドさせたり、スライドを規制したりすることができるので、好ましい。 The pair of stopper members 40 are detachably attached to the second receiving member 14 by a fixing device (not shown).
As this fixing device, for example, a vise-shaped fastening bracket is used, and the fastening bracket is a bolt with the tip portions facing each other at one end portion and the other end portion of the main body formed in a substantially C shape. Are screwed together.
By tightening both bolts of the fastening bracket, the one end of the stopper member 40 and the flange of the second receiving member 14 can be firmly held. When removing the stopper member 40, the stopper member 40 can be easily removed from the second receiving member 14 simply by loosening the bolt and removing the fastening bracket. Therefore, it is preferable because the pair of second guide frames 30 can be easily slid and regulated.

なお、図示はしないが、Ｈ型鋼を所定の長さに切断した主材の上面に、鋼管矢板である前記杭材２の継手部２ａの位置を固定することにより杭材２の打設時における回転を防止する継手部固定口を設置してなる回転防止治具を、前記一対の第２導枠３０上に設けるようにしてもよい。
すなわち、鋼管矢板である前記杭材２は、前記一対の第１導枠２０および一対の第２導枠３０だけでなく、前記回転防止治具によっても、打設時の打設精度を確保できるので好ましい。 Although not shown, by fixing the position of the joint portion 2a of the pile material 2 which is a steel pipe sheet pile on the upper surface of the main material obtained by cutting the H-shaped steel into a predetermined length, You may make it provide the rotation prevention jig | tool formed by installing the joint part fixing port which prevents rotation on a pair of said 2nd conducting frames 30. FIG.
That is, the pile material 2 which is a steel pipe sheet pile can secure the placement accuracy at the time of placement not only by the pair of first guide frames 20 and the pair of second guide frames 30 but also by the rotation prevention jig. Therefore, it is preferable.

なお、前記支持部１０には、図１，図３および図４に示すように、所定の間隔をあけて並設される複数の支持フレーム１１と、前記一対の第１導枠２０および一対の第２導枠３０とで囲まれる位置に、前記杭材２を挿入するための空間である挿入部１０ａが形成されている。
本実施の形態の挿入部１０ａは、５つの支持フレーム１１と、前記一対の第１導枠２０および一対の第２導枠３０とで囲まれる位置に４つ形成されている。そして、これら挿入部１０ａには少なくとも１本の杭材２を挿入できるようになっている。 As shown in FIGS. 1, 3 and 4, the support portion 10 includes a plurality of support frames 11 arranged in parallel at a predetermined interval, the pair of first guide frames 20, and a pair of pairs. An insertion portion 10 a that is a space for inserting the pile material 2 is formed at a position surrounded by the second guide frame 30.
Four insertion portions 10 a of the present embodiment are formed at positions surrounded by the five support frames 11 and the pair of first guide frames 20 and the pair of second guide frames 30. And at least 1 pile material 2 can be inserted now in these insertion parts 10a.

次に、以上のような打設用定規１を用いて、前記杭材２を地中に鉛直に打設する杭材２の打設方法について説明する。   Next, a method for placing the pile material 2 for vertically placing the pile material 2 in the ground using the above-described placement ruler 1 will be described.

まず、図１および図２に示すように、前記少なくとも一対の導杭１２の下端部を地中に打設し、これら少なくとも一対の導杭１２間に前記第１受材１３を、この第１受材１３が地面に接するように架設する。さらに、この第１受材１３よりも上方に位置するようにして、前記少なくとも一対の導杭１２の上端部間に前記第２受材１４を架設することによって、前記支持フレーム１１を形成して、地面に設置する。
また、このような支持フレーム１１を、所定の間隔をあけて複数並設することによって前記支持部１０を形成する。 First, as shown in FIGS. 1 and 2, the lower end portions of the at least one pair of guide piles 12 are driven into the ground, and the first receiving material 13 is placed between the at least one pair of guide piles 12 in the first. The receiving material 13 is constructed so as to be in contact with the ground. Further, the support frame 11 is formed by laying the second receiver 14 between the upper ends of the at least one pair of guide piles 12 so as to be positioned above the first receiver 13. Install on the ground.
Further, the support portion 10 is formed by arranging a plurality of such support frames 11 in parallel with a predetermined interval.

続いて、前記一対の第１導枠２０を、前記支持部１０の複数の第１受材１３間に架設固定するとともに、前記一対の第２導枠３０を、前記支持部１０の複数の第２受材１４間に架設する。
なお、前記一対の第２導枠３０には、図５〜図７に示すように、予め前記スライド手段３１を取り付けておき、さらに、前記第２受材１４にも、前記一対のストッパー部材４０，４１を取付固定しておくことが望ましい。
このようにして、前記打設用定規１を、前記杭材２が打設される位置に設置しておく。 Subsequently, the pair of first guide frames 20 are installed and fixed between the plurality of first receiving members 13 of the support portion 10, and the pair of second guide frames 30 are fixed to the plurality of first guide members 13 of the support portion 10. 2 It is installed between the receiving materials 14.
As shown in FIGS. 5 to 7, the sliding means 31 is attached in advance to the pair of second guide frames 30, and the pair of stopper members 40 are also attached to the second receiving member 14. 41 are preferably attached and fixed.
In this way, the placement ruler 1 is installed at a position where the pile material 2 is placed.

続いて、前記クレーン等のワイヤー４によって吊り下げられた前記振動式杭打機３の把持部３ａによって、前記杭材２の上端部を把持し、この杭材２を所定の高さまで吊り上げるとともに、前記打設用定規１の上方に移動させる。   Subsequently, the gripping portion 3a of the vibratory pile driving machine 3 suspended by the wire 4 such as the crane grips the upper end portion of the pile material 2 and lifts the pile material 2 to a predetermined height, Move above the placement ruler 1.

続いて、前記杭材２を下げ降ろして、図３に示すように、前記複数の支持フレーム１１と、前記一対の第１導枠２０および一対の第２導枠３０とで囲まれる位置に形成される挿入部１０ａに挿入する。
そして、前記杭材２を、前記一対の第１導枠２０および一対の第２導枠３０によって挟持するとともに、前記一対のストッパー部材４０によって、前記一対の第２導枠３０が互いに離間する方向にスライドすることを規制する。これによって、前記杭材２の打設時のブレを確実に防止でき、この杭材２の打設精度を向上させることが可能となる。 Subsequently, the pile material 2 is lowered and formed at a position surrounded by the plurality of support frames 11, the pair of first guide frames 20 and the pair of second guide frames 30, as shown in FIG. To be inserted into the insertion portion 10a.
The pile material 2 is sandwiched between the pair of first guide frames 20 and the pair of second guide frames 30, and the pair of second guide frames 30 are separated from each other by the pair of stopper members 40. Regulate sliding to As a result, it is possible to reliably prevent blurring during the placement of the pile material 2 and improve the placement accuracy of the pile material 2.

なお、前記杭材２を、前記一対の第１導枠２０および一対の第２導枠３０によって挟持する際は、この杭材２を摺動可能とするために強固に挟持せずに、前記杭材２と、前記一対の第１導枠２０および一対の第２導枠３０とは、例えば２０ｍｍ〜３０ｍｍ程度の間隔を保持することが望ましい。また、この杭材２を挟持した場合でも、前記杭材２の外周面と、前記一対の第１導枠２０および前記一対の第２導枠３０と間に潤滑剤などを塗布してもよいものとする。   When the pile material 2 is sandwiched between the pair of first guide frames 20 and the pair of second guide frames 30, the pile material 2 is not firmly clamped in order to be slidable. It is desirable that the pile material 2 and the pair of first guide frames 20 and the pair of second guide frames 30 maintain, for example, an interval of about 20 mm to 30 mm. Even when the pile material 2 is sandwiched, a lubricant or the like may be applied between the outer peripheral surface of the pile material 2 and the pair of first guide frames 20 and the pair of second guide frames 30. Shall.

なお、このように前記杭材２と、前記一対の第２導枠３０との間隔を保持するために、図５および図６に示すように、前記ストッパー部材４１を、前記第２受材１４のウェブ上に予め取り付けておく。これらストッパー部材４１としては、例えばアングル材が用いられており、溶接やボルト接合等によって前記第２受材１４に固定する。   In addition, in order to maintain the space | interval of the said pile material 2 and a pair of said 2nd guide frames 30 in this way, as shown to FIG. 5 and FIG. Pre-installed on the web. As these stopper members 41, for example, an angle material is used, and is fixed to the second receiving material 14 by welding, bolt joining or the like.

このように前記杭材２を、前記一対の第１導枠２０および一対の第２導枠３０によって挟持した後、前記杭材２を、この杭材２の上端部が前記一対の第２導枠３０の近傍まで達するように、前記振動式杭打機３によって打設する。   After the pile material 2 is sandwiched between the pair of first guide frames 20 and the pair of second guide frames 30 in this way, the pile material 2 is placed at the upper end portion of the pile material 2 with the pair of second guide frames. The vibration pile driver 3 is driven so as to reach the vicinity of the frame 30.

その後、図４に示すように、前記一対のストッパー部材４０を前記第２受材１４から取り外して、前記一対の第２導枠３０を、これら一対の第２導枠３０が互いに離間する方向にスライドさせてから、前記杭材２を、この杭材２の上端部が前記一対の第１導枠２０の近傍まで達するように、前記振動式杭打機３によって打設する。これによって、前記一対の第２導枠３０と、前記杭材２の上端部を把持する振動式杭打機３とが接触することを確実に防ぐことができるとともに、前記杭材２を、地中に深く打設することが可能となる。   Thereafter, as shown in FIG. 4, the pair of stopper members 40 are removed from the second receiving member 14, and the pair of second guide frames 30 are moved in a direction in which the pair of second guide frames 30 are separated from each other. After sliding, the pile material 2 is driven by the vibratory pile driver 3 so that the upper end portion of the pile material 2 reaches the vicinity of the pair of first guide frames 20. This can reliably prevent the pair of second guide frames 30 and the vibrating pile driver 3 that holds the upper end of the pile material 2 from coming into contact with each other, It becomes possible to drive deep inside.

以上のようにして、前記打設用定規１を用いて、前記杭材２を鉛直方向にガイドしながら地中に打設できるようになっている。   As described above, by using the driving ruler 1, the pile material 2 can be driven in the ground while being guided in the vertical direction.

また、以上のような作業を繰り返すことによって、複数の杭材２を地中に打設することができるので、地中に打設された隣り合う杭材２の隣り合う継手部２ａ同士を噛み合わせることによって、鋼管矢板基礎や土留壁等を形成することができる。   Further, by repeating the above operation, a plurality of pile members 2 can be driven into the ground, so that adjacent joint portions 2a of adjacent pile members 2 placed in the ground are bitten. A steel pipe sheet pile foundation, a retaining wall, etc. can be formed by combining.

なお、このような鋼管矢板基礎や土留壁等を形成する際は、例えば、一本置きに基準杭となる杭材２を打設した後、その間に閉合杭となる杭材２を打設する。すなわち、前記挿入部１０ａには、基準杭となる杭材２が少なくとも１本挿入されることとなる。
また、少なくとも基準杭となる杭材２は、トランシット等の測量機器によって直角二方向より鉛直精度を確認・修復しながら建て込み・打ち込み作業を行うものとする。 In addition, when forming such a steel pipe sheet pile foundation, a retaining wall, etc., after placing the pile material 2 used as a reference | standard pile every other, for example, the pile material 2 used as a closed pile is driven in the meantime. . That is, at least one pile material 2 serving as a reference pile is inserted into the insertion portion 10a.
In addition, at least the pile material 2 serving as a reference pile is to be built and driven in while checking and repairing vertical accuracy from two directions perpendicular to a surveying instrument such as transit.

なお、本実施の形態の杭材２は、鉛直方向に打設されるものとしたが、これに限られるものではなく、例えば斜め方向に打設してもよいものとする。
この場合は、前記一対の第１導枠２０および一対の第２導枠３０を、図示しない傾き調整部材等を、前記第１受材１３および第２受材１４との間に介在させることによって所定の角度に傾斜させ、さらに、前記一対の第１導枠２０の位置と前記一対の第２導枠３０の位置とを、前記杭材２を斜め方向に打設できるように配置する。 In addition, although the pile material 2 of this Embodiment shall be driven in the perpendicular direction, it is not restricted to this, For example, you may drive in the diagonal direction.
In this case, by inserting the pair of first guide frames 20 and the pair of second guide frames 30 between the first receiving member 13 and the second receiving member 14 with an inclination adjusting member (not shown) interposed therebetween. Inclined at a predetermined angle, and further, the position of the pair of first guide frames 20 and the position of the pair of second guide frames 30 are arranged so that the pile material 2 can be driven in an oblique direction.

本実施の形態によれば、前記杭材２を、前記支持部１０の複数の第１受材１３間に架設される一対の第１導枠２０によって、地表面に近い高さで挟持できるとともに、前記支持部１０の複数の第２受材１４間に架設される一対の第２導枠３０によって、前記一対の第１導枠２０によって挟持された杭材２の地表面に近い高さの部分よりも上方で挟持できるので、前記杭材２の長さ方向に沿って２箇所で前記杭材２を摺動可能に挟持できることとなる。したがって、前記振動式杭打機３によって打設される際の前記杭材２のブレを確実に防止することができるので、前記杭材２の打設精度を向上させることが可能となる。   According to the present embodiment, the pile material 2 can be clamped at a height close to the ground surface by the pair of first guide frames 20 installed between the plurality of first receiving members 13 of the support portion 10. The height of the pile material 2 sandwiched between the pair of first guide frames 20 is close to the ground surface by the pair of second guide frames 30 installed between the plurality of second receiving members 14 of the support portion 10. Since it can be clamped above the part, the pile material 2 can be slidably clamped at two locations along the length direction of the pile material 2. Therefore, the pile material 2 can be reliably prevented from being shaken when being driven by the vibration pile driving machine 3, so that the placement accuracy of the pile material 2 can be improved.

本発明の打設用定規を示す平面図である。It is a top view which shows the ruler for placement of this invention. 図１に示す打設用定規のＡ−Ａ側面図である。It is an AA side view of the ruler for placement shown in FIG. 図１に示す打設用定規のＢ−Ｂ断面図を示すとともに、振動式杭打機によって把持された杭材の打設途中の状態を示している。While showing BB sectional drawing of the ruler for placement shown in Drawing 1, the state in the middle of placement of the pile material grasped by the vibration type pile driving machine is shown. 図３に示す杭材の打設完了直前の状態を示す断面図である。It is sectional drawing which shows the state just before completion of placement of the pile material shown in FIG. スライド手段近傍の構成を示す拡大側断面図であり、一対の第２導枠が互いに離間する方向にスライドした状態を示している。It is an expanded sectional side view which shows the structure of the slide means vicinity, and has shown the state which a pair of 2nd guide frame slid to the direction which mutually spaces apart. スライド手段近傍の構成を示す拡大側断面図であり、一対の第２導枠が互いに接近する方向にスライドした状態を示している。It is an expanded sectional side view which shows the structure of slide means vicinity, and has shown the state which the pair of 2nd guide frames slid to the direction which mutually approaches. スライド手段近傍の構成を示す拡大断面図である。It is an expanded sectional view which shows the structure of the slide means vicinity.

符号の説明Explanation of symbols

１ 打設用定規
２ 杭材
３ 振動式杭打機
１０ 支持部
２０ 第１導枠
３０ 第２導枠
３１ スライド手段
４０ ストッパー部材 DESCRIPTION OF SYMBOLS 1 Setting ruler 2 Pile material 3 Vibration type pile driving machine 10 Support part 20 1st guide frame 30 2nd guide frame 31 Slide means 40 Stopper member

Claims (3)

鋼管矢板等の杭材を、バイブロハンマ等の振動式杭打機によって地中に打設する際に、この杭材を所定の打設方向にガイドする打設用定規において、
下端部が地中に打設される少なくとも一対の導杭と、これら少なくとも一対の導杭間に架設されるとともに地面に接する第１受材と、この第１受材よりも上方に位置するとともに前記少なくとも一対の導杭の上端部間に架設される第２受材とを有する支持フレームを、所定の間隔をあけて複数並設することによって形成される支持部と、
この支持部の複数の第１受材間に架設されるとともに、前記杭材を、この杭材の打設方向に沿って摺動可能に挟持する一対の第１導枠と、
前記支持部の複数の第２受材間に架設されるとともに、前記杭材を、この杭材の打設方向に沿って摺動可能に挟持する一対の第２導枠とを備えており、
前記一対の第２導枠は、これら一対の第２導枠を、前記複数の第２受材の長さ方向に沿ってスライドさせるスライド手段を備えていることを特徴とする打設用定規。 When placing a pile material such as a steel pipe sheet pile into the ground by a vibration pile driving machine such as a vibratory hammer, in a placement ruler that guides this pile material in a predetermined placement direction,
At least a pair of guiding piles whose lower end portions are driven into the ground, a first receiving material which is constructed between these at least a pair of guiding piles and is in contact with the ground, and located above the first receiving material A support portion formed by arranging a plurality of support frames having a second receiving material laid between the upper end portions of the at least one pair of guide piles at predetermined intervals; and
A pair of first guide frames that are laid between the plurality of first receiving members of the support portion and that slidably hold the pile material along the direction of placing the pile material,
A pair of second guide frames that are laid between the plurality of second receiving members of the support portion, and that slidably hold the pile material along the direction of placing the pile material ,
The pair of second guide frames is provided with a sliding ruler that includes slide means for sliding the pair of second guide frames along a length direction of the plurality of second receiving members . 前記第２受材には、前記一対の第２導枠のスライドを規制するストッパー部材が、この第２受材の長さ方向の所定の位置に着脱可能に設けられていることを特徴とする請求項１に記載の打設用定規。 The second image receiving material, a stopper member for restricting the sliding of the pair of second Shirubewaku, characterized in that provided detachably at a predetermined position in the length direction of the second receiving material The placement ruler according to claim 1. 請求項２に記載の打設用定規を用いて、前記杭材を地中に鉛直に打設する杭材の打設方法であって、
前記打設用定規を、前記杭材が打設される位置に設置しておき、
前記杭材を、前記一対の第１導枠および一対の第２導枠によって挟持するとともに、前記一対のストッパー部材によって、前記一対の第２導枠が互いに離間する方向にスライドすることを規制し、
前記杭材を、この杭材の上端部が前記一対の第２導枠の近傍まで達するように、前記振動式杭打機によって打設した後、前記一対のストッパー部材を前記第２受材から取り外してから、前記一対の第２導枠を、これら一対の第２導枠が互いに離間する方向にスライドさせ、
その後、前記杭材を、この杭材の上端部が前記一対の第１導枠の近傍まで達するように、前記振動式杭打機によって打設することを特徴とする杭材の打設方法。 Using the placement ruler according to claim 2, a pile material placing method for vertically placing the pile material in the ground,
The placement ruler is installed at a position where the pile material is placed,
The pile material is sandwiched between the pair of first guide frames and the pair of second guide frames, and the pair of stopper members restricts the pair of second guide frames from sliding in a direction away from each other. ,
After the pile material is driven by the vibration pile driver so that the upper end portion of the pile material reaches the vicinity of the pair of second guide frames, the pair of stopper members are separated from the second receiving material. After removing, the pair of second guide frames are slid in a direction in which the pair of second guide frames are separated from each other,
Thereafter, the pile material, this as the upper end of the pile member reaches the vicinity of the first conductive frame of the pair, hitting設方method of pilings characterized by pouring to Rukoto by the vibratory pile driver .
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