JPH07252835A - Construction method for diagonal shore strut - Google Patents
Construction method for diagonal shore strutInfo
- Publication number
- JPH07252835A JPH07252835A JP4380494A JP4380494A JPH07252835A JP H07252835 A JPH07252835 A JP H07252835A JP 4380494 A JP4380494 A JP 4380494A JP 4380494 A JP4380494 A JP 4380494A JP H07252835 A JPH07252835 A JP H07252835A
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- JP
- Japan
- Prior art keywords
- diagonal
- foundation
- ground
- constructed
- cutting beam
- 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.)
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Foundations (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地盤を掘削していく際
に、親杭横矢板工法やシートパイル工法等による山止壁
を支持するように構築される切梁に係り、更に詳しく
は、地盤の高さが相違している場合における切梁の構築
や、広い面積を掘削した場合における切梁の構築方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crossbeam constructed so as to support a retaining wall formed by a main pile side sheet pile construction method or a sheet pile construction method when excavating the ground. The present invention relates to a construction of a crossbeam when the heights of the ground are different and a construction method of a crossbeam when a large area is excavated.
【０００２】[0002]
【従来の技術】従来、図２に示すように、地盤１を掘削
していく場合に、地盤のＡ側とＢ側の高さが相違してい
ると、土圧による山止壁２の崩落を防ぐために前記山止
壁２に接して水平に取り付けられた腹起こし３を介して
山止壁２，２間に横架される通常の切り梁４を、斜め切
梁４ａのように斜めに架設することになる。2. Description of the Related Art Conventionally, as shown in FIG. 2, when excavating the ground 1, if the heights of the A side and the B side of the ground are different from each other, collapse of the retaining wall 2 due to earth pressure occurs. In order to prevent this, a normal cutting beam 4 which is horizontally installed between the mountain retaining walls 2 and 2 via a bellows raising 3 which is horizontally attached in contact with the mountain retaining wall 2 is slanted like an oblique cutting beam 4a. Will be erected.
【０００３】しかし、このような斜め切梁４ａでは、Ｂ
側の土圧をＡ側の腹起こし３で十分に受け持って支持す
ることができず、実際の施工は不可能であった。However, in such an oblique cutting beam 4a, B
The earth pressure on the side could not be sufficiently supported and supported by the abdomen uplifting 3 on the side A, and the actual construction was impossible.
【０００４】そこで、図３に示すように、各山止壁２，
２を地盤アンカー５によって支持するように施工するこ
とも可能ではあるが、この場合には、当該掘削地盤の隣
接地Ａ，Ｂにアンカーを打ち込むことの許可が必要であ
り、その許可が無ければ施工することが不可能であっ
て、必ずしも確実な施工方法にならない不都合がある。Therefore, as shown in FIG. 3, each cliff wall 2,
It is possible to construct so that 2 is supported by the ground anchor 5, but in this case, it is necessary to permit the anchor to be driven into the adjacent land A, B of the excavated ground, and if there is no such permission. There is an inconvenience that the construction is impossible and the construction method is not always reliable.
【０００５】この他、図４に示すように、地盤１に支持
杭６を構築し、該支持杭６の頭部にコンクリート製基礎
７を形成して、この基礎７に斜め切梁４ａの一端部を固
着し、この斜め切梁４ａの他端部を腹起こし３に固着す
る、と言う方法もある。In addition to this, as shown in FIG. 4, a support pile 6 is constructed on the ground 1, a concrete foundation 7 is formed on the head of the support pile 6, and one end of the diagonal cutting beam 4a is formed on the foundation 7. There is also a method of fixing the portion and fixing the other end of the oblique cutting beam 4a to the belly 3 and fixing it.
【０００６】この方法では、大きな土圧が前記基礎７に
加わると支持力が不安定となり確実性がなく、また、コ
ストも嵩むという問題点があった。In this method, when a large earth pressure is applied to the foundation 7, the supporting force becomes unstable, so that there is no certainty and the cost increases.
【０００７】また、図５に示すように、大きな受け基礎
８を根切り底に構築して、前述と同様にして斜め切梁４
ａを架設するようにもできる。Further, as shown in FIG. 5, a large receiving foundation 8 is constructed on the root cutting bottom, and the diagonal cutting beams 4 are formed in the same manner as described above.
It is also possible to install a.
【０００８】しかし、この場合にも、前記受け基礎８を
構築するのにコストが嵩み工期も長くなってしまうと言
う問題点があった。However, also in this case, there is a problem in that the construction of the receiving base 8 requires a high cost and a long construction period.
【０００９】また、図６に示すように、根切り底に厚い
捨てコンクリート９を構築して、この捨てコンクリート
９の両側に斜め切梁４ａ，４ｂを架設し、力の釣り合い
がとれるようにすることもできる。Further, as shown in FIG. 6, a thick discarded concrete 9 is constructed at the root cutting bottom, and diagonal cut beams 4a and 4b are installed on both sides of the discarded concrete 9 so as to balance the forces. You can also
【００１０】しかし、このような方法でも、斜め切梁４
ａ，４ｂの釣り合いがとれているような状態ではよい
が、前記隣接した地盤Ａ，Ｂの高さが異なると不釣り合
いとなって不安定となるのは避けられず、工期も長くな
ると言う問題点があった。However, even with such a method, the diagonal beams 4
It is good that the a and 4b are balanced, but if the heights of the adjacent grounds A and B are different, it is unavoidable that the grounds A and B are unbalanced and unstable, and the construction period becomes long. There was a point.
【００１１】[0011]
【発明が解決しようとする課題】このように、従来の斜
め切梁の受け基礎においては、コストや工期または力の
釣り合いの関係の点において解決すべき課題を有してい
た。本発明は、上記の課題に鑑みてなされたもので、特
に隣接地盤の高さが相違している場合や広い面積の地下
工事において、工期を短縮して安定した受け基礎及び斜
め切梁を構築することを目的とする。As described above, the conventional foundations for the slanted beams have problems to be solved in terms of cost, construction period, and balance of force. The present invention has been made in view of the above problems, and particularly when the height of adjacent ground is different or in the underground construction of a large area, the construction period is shortened to construct a stable receiving foundation and diagonal cutting beams. The purpose is to do.
【００１２】[0012]
【課題を解決するための手段】本発明の上記課題を解決
し上記目的を達成するための要旨は、根切り底に支持層
まで達する支持杭と、該支持杭の頭部をコンクリートで
一体に固着した基礎部とを構築し、前記基礎部には斜め
切梁に対して釣り合いを保つようにして地盤アンカーを
構築し、その後前記斜め切梁を設置するようにした斜め
切梁の構築方法である。Means for Solving the Problems The object of the present invention to solve the above problems and achieve the above objects is to provide a support pile reaching a support layer at a root cutting bottom and a head of the support pile integrally made of concrete. By building a fixed foundation part, constructing a ground anchor in the foundation part so as to maintain balance with the diagonal cutting beam, and then installing the diagonal cutting beam by the construction method of the diagonal cutting beam is there.
【００１３】また、斜め切梁を設置する際には、当該斜
め切梁の架設ラインに沿って法面を残しておき、前記斜
め切梁を架設した後に前記法面を取り除くことによって
前記斜め切梁を設置するようにしたことである。When installing the diagonal cutting beam, a slope is left along the erection line of the diagonal cutting beam, and after the diagonal cutting beam is installed, the slope is removed to remove the diagonal cutting beam. That is, the beams were installed.
【００１４】[0014]
【作用】本発明の斜め切梁の構築方法によれば、地盤ア
ンカーと支持杭とで斜め切梁を支持する強固な反力体が
形成され、隣接する敷地内に亘って反力をとることな
く、工事施工範囲内における根切り底で構築される。According to the method of constructing the diagonal truss of the present invention, a strong reaction force body for supporting the diagonal truss is formed by the ground anchor and the support pile, and the reaction force is taken over the adjacent site. Instead, it is constructed with a root cutting bottom within the construction range.
【００１５】また、斜め切梁を設置する際には、当該斜
め切梁の架設ラインに沿って法面を残しておき、前記斜
め切梁を架設した後に前記法面を取り除くことによって
前記斜め切梁を設置するようにすれば、斜め切梁の架設
作業が容易となる。Further, when the diagonal cutting beam is installed, a slope is left along the erection line of the diagonal cutting beam, and after the diagonal cutting beam is installed, the slope is removed to remove the diagonal cutting beam. If the beam is installed, the work of constructing the diagonal beam can be facilitated.
【００１６】[0016]
【実施例】次に、本発明に係る一実施例について図面を
参照して詳細に説明する。なお、従来例に対応する部分
には理解容易のために同一符号を付けて説明する。図１
は、本発明に係る斜め切梁の構築方法の施工例を示して
いる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment according to the present invention will be described in detail with reference to the drawings. For the sake of easy understanding, the portions corresponding to the conventional example will be described with the same reference numerals. Figure 1
Shows an example of construction of a method for constructing a diagonal beam according to the present invention.
【００１７】他人の敷地との境界線１０に沿って山止壁
２を構築し、地盤１を掘削していく。そして、斜め切梁
４ａを架設しようとする架設ラインに達して法面１ａが
形成される。支持杭１２の打設及び地盤アンカー１４の
設置は、掘削前でも良いし、掘削後の法面１ａを残した
状態のどちらでも実施できる。この支持杭１２は既製品
に限らず現場打ち杭でもよい。The cliff wall 2 is constructed along the boundary line 10 with the site of another person, and the ground 1 is excavated. Then, the slope 1a is formed by reaching the erection line for erection of the oblique cutting beam 4a. The mounting of the support piles 12 and the installation of the ground anchors 14 may be performed either before the excavation or after leaving the slope 1a after the excavation. The support pile 12 is not limited to a ready-made product, and may be a cast-in-place pile.
【００１８】前記支持杭１２の先端部は、地盤１の堅い
支持層に達するまで打ち込むものである。そして、前記
支持杭１２の頭部にスタッドボルト１２ａを介して連結
を強固にしてコンクリートを打設し、一体にして基礎部
１３を形成する。The tip of the support pile 12 is driven into the hard support layer of the ground 1. Then, concrete is laid on the heads of the support piles 12 through the stud bolts 12a to strengthen the connection, and the foundation 13 is formed integrally.
【００１９】次に、前記基礎部１３に地盤アンカー１４
を設ける。この地盤アンカー１４は、力関係の釣り合い
を保つべく、後に架設しようとする斜め切梁４ａとは略
同一の垂直面内に収まるように施工される。Next, a ground anchor 14 is attached to the foundation portion 13.
To provide. The ground anchor 14 is constructed so as to fit within a vertical plane substantially the same as the diagonal cutting beam 4a to be installed later in order to maintain the balance of the force relationship.
【００２０】前記地盤アンカー１４は、地盤１内に穿孔
された孔にアンカー１４ａを挿入してコンクリートを打
設し、コンクリート定着体１４ｂを形成する。そして、
基礎部１３に設けられた貫通孔から突出しているアンカ
ー１４ａの後端部を、定着座金１４ｃを嵌装し、所定の
緊張力で緊張した後に定着ナット１４ｄを締め込んで定
着させる。In the ground anchor 14, the anchor 14a is inserted into the hole drilled in the ground 1 and concrete is poured to form a concrete fixing body 14b. And
The fixing washer 14c is fitted to the rear end of the anchor 14a protruding from the through hole provided in the base portion 13, and the fixing nut 14d is tightened and fixed by tightening the fixing washer 14c with a predetermined tension force.
【００２１】次に、存置された前記法面１ａに沿って、
前記基礎部１３と山止壁２に接して横架された腹起こし
３との間に、Ｈ鋼製の斜め切梁４ａを架設する。Next, along the existing slope 1a,
An H-steel diagonal cutting beam 4a is installed between the foundation portion 13 and the bellows erection 3 which is laterally bridged in contact with the mountain stop wall 2.
【００２２】なお、前記腹起こし３には、地盤Ｂの土圧
による膨らみを防止するために、逆付ブラケット１５が
斜材として固定されている。In order to prevent the ground B from bulging due to earth pressure, a reverse mounting bracket 15 is fixed as a diagonal member to the abdomen uplifting 3.
【００２３】その後、前記法面１ａ部分の地盤を掘削
し、根切り底１１まで掘削して建物の基礎を構築するも
のである。また、この建物の基礎を構築していく手順
は、図１（イ）の紙面直行方向において、ある区画部分
を地上まで構築して順次前記斜め切梁４ａを撤去してい
くものである。After that, the ground of the slope 1a is excavated and the root cutting bottom 11 is excavated to construct the foundation of the building. In addition, the procedure for constructing the foundation of this building is to construct a certain section up to the ground in the direction perpendicular to the plane of FIG. 1 (a) and sequentially remove the diagonal cutting beams 4a.
【００２４】また、地盤１の隣接した地盤Ａ，Ｂが、図
１（ロ）に示すように、高さが相違している場合には、
両側の山止壁２から基礎部１３に対して斜め切梁４ａを
架設するものである。When the grounds A and B adjacent to the ground 1 have different heights as shown in FIG. 1B,
The diagonal beams 4a are installed from the mountain stop walls 2 on both sides to the base portion 13.
【００２５】[0025]
【発明の効果】以上説明したように、本発明の斜め切梁
の構築方法は、根切り底に支持層まで達する支持杭と、
該支持杭の頭部をコンクリートで一体に固着した基礎部
とを構築し、前記基礎部には斜め切梁に対して釣り合い
を保つようにして地盤アンカーを構築し、その後前記斜
め切梁を設置するようにしたので、地盤の土圧が大きく
ても前記地盤アンカーによって大耐力が得られ、斜め切
梁の支持力が安定すると共に工期の短縮となると言う優
れた効果を奏する。As described above, the method for constructing an oblique beam according to the present invention comprises a support pile that reaches the root and the support layer,
The foundation of which the heads of the support piles are integrally fixed with concrete is constructed, and a ground anchor is constructed on the foundation so as to maintain balance with the diagonal cutting beam, and then the diagonal cutting beam is installed. Therefore, even if the earth pressure of the ground is large, a large yield strength can be obtained by the ground anchor, and the supporting force of the diagonal beam can be stabilized and the work period can be shortened.
【００２６】また、地盤の堅い支持層に達する支持杭と
地盤アンカーによって、根切り底部の土質を選ばないの
で適用範囲が広く、各山止壁部分で独立して斜め切梁を
架設することができると言う優れた効果を奏する。[0026] Further, since the soil quality of the root cutting bottom is not selected by the support pile and the ground anchor reaching the hard support layer of the ground, the application range is wide and it is possible to construct the diagonal cutting beams independently at each mountain wall. It has an excellent effect that it can be done.
【００２７】そして、部分的に斜め切梁を解体すること
もでき、工区別に施工が可能であり、地盤の掘削深さが
各部で異なるような工事において、若しくは広い面積の
地下工事であっても本発明の構築方法を適用することが
できると言う優れた効果を奏する。Further, the diagonal beams can be partially dismantled so that the construction can be carried out by different works, even in the construction where the excavation depth of the ground is different in each part, or even in the case of underground construction of a large area. There is an excellent effect that the construction method of the present invention can be applied.
【００２８】更に、斜め切梁を設置する際には、当該斜
め切梁の架設ラインに沿って法面を残しておき、前記斜
め切梁を架設した後に前記法面を取り除くことによって
前記斜め切梁を設置するようにしたことで、当該斜め切
梁を容易に架設することができると言う優れた効果を奏
する。Further, when the diagonal cutting beam is installed, a slope is left along the erection line of the diagonal cutting beam, and after the diagonal cutting beam is installed, the slope is removed to remove the diagonal cutting beam. Since the beam is installed, the diagonal cutting beam can be easily installed, which is an excellent effect.
【図１】本発明に係る斜め切梁の構築方法の施工例を示
す説明図（イ），（ロ）である。FIG. 1 is explanatory diagrams (a) and (b) showing a construction example of a method for constructing a diagonal beam according to the present invention.
【図２】従来例に係る斜め切梁の施工例の説明図であ
る。FIG. 2 is an explanatory diagram of a construction example of a diagonal slash according to a conventional example.
【図３】同従来例に係り、隣接地盤に地盤アンカーを設
けた場合の説明図である。FIG. 3 is an explanatory diagram according to the conventional example, in which a ground anchor is provided on an adjacent ground.
【図４】同従来例に係り、支持杭を設けた場合の説明図
である。FIG. 4 is an explanatory view of a case where a support pile is provided according to the conventional example.
【図５】同従来例に係り、受け基礎を設けた場合の説明
図である。FIG. 5 is an explanatory diagram relating to the conventional example and including a receiving base.
【図６】同従来例に係り、厚い捨てコンクリートを打設
して斜め切梁を両側から架設してつり合わせた場合の説
明図である。FIG. 6 is an explanatory diagram according to the conventional example, in which a thick discarded concrete is poured and diagonal slant beams are erected from both sides and balanced.
１ 地盤、 １ａ 法面、 ２ 山止壁、 ３ 腹起こし、 ４ 切り梁、 ４ａ，４ｂ 斜め切梁、 ５ 地盤アンカー、 ６ 支持杭、 ７ 基礎、 ８ 受け基礎、 ９ 捨てコンクリート、 １０ 境界線、 １１ 根切り底 １２ 支持杭、 １２ａ スタッドボルト、 １３ 基礎部、 １４ 地盤アンカー、 １４ａ アンカー、 １４ｂ コンクリート定着体、 １４ｃ 定着座金、 １４ｄ 定着ナット。 1 ground, 1a slope, 2 mountain retaining wall, 3 waving up, 4 beam, 4a, 4b diagonal beam, 5 ground anchor, 6 support pile, 7 foundation, 8 receiving foundation, 9 waste concrete, 10 boundary line, 11 root cutting bottom 12 support pile, 12a stud bolt, 13 foundation part, 14 ground anchor, 14a anchor, 14b concrete fixing body, 14c fixing washer, 14d fixing nut.
Claims (2)
該支持杭の頭部をコンクリートで一体に固着した基礎部
とを構築し、前記基礎部には斜め切梁に対して釣り合い
を保つようにして地盤アンカーを構築し、その後前記斜
め切梁を設置するようにしたことを特徴する斜め切梁の
構築方法。1. A support pile that reaches the root of the root and reaches the support layer,
The foundation of which the heads of the support piles are integrally fixed with concrete is constructed, and a ground anchor is constructed on the foundation so as to maintain balance with the diagonal cutting beam, and then the diagonal cutting beam is installed. A method for constructing an oblique cross beam, which is characterized in that
梁の架設ラインに沿って法面を残しておき、前記斜め切
梁を架設した後に前記法面を取り除くことによって前記
斜め切梁を設置するようにしたことを特徴する請求項１
に記載の斜め切梁の構築方法。2. When installing the diagonal cutting beam, a slope is left along the erection line of the diagonal cutting beam, and the slope is removed after the diagonal cutting beam is installed and the slope cutting is performed. A beam is installed, and the beam is installed.
Method for constructing diagonal beams as described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04380494A JP3505213B2 (en) | 1994-03-15 | 1994-03-15 | Construction method of diagonally cut beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04380494A JP3505213B2 (en) | 1994-03-15 | 1994-03-15 | Construction method of diagonally cut beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07252835A true JPH07252835A (en) | 1995-10-03 |
| JP3505213B2 JP3505213B2 (en) | 2004-03-08 |
Family
ID=12673939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04380494A Expired - Fee Related JP3505213B2 (en) | 1994-03-15 | 1994-03-15 | Construction method of diagonally cut beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3505213B2 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247308A (en) * | 2006-03-17 | 2007-09-27 | Takenaka Komuten Co Ltd | Pulling-out bearing strength reinforcing for pile group comprised of inclined piles and structure constructed according to the same |
| JP2011174278A (en) * | 2010-02-24 | 2011-09-08 | Taisei Corp | Earth retaining and earth retaining construction method |
| JP2012162848A (en) * | 2011-02-03 | 2012-08-30 | Okumura Corp | Structure of earth retaining timbering and construction method of the same |
| CN103114595A (en) * | 2013-01-06 | 2013-05-22 | 厦门源昌城建集团有限公司 | Support method and device of support pile preformed core-soil double-buttress inclined inner-strut foundation ditch |
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