JP3411884B2 - Supporting member and earth retaining support using the same - Google Patents
Supporting member and earth retaining support using the sameInfo
- Publication number
- JP3411884B2 JP3411884B2 JP2000111560A JP2000111560A JP3411884B2 JP 3411884 B2 JP3411884 B2 JP 3411884B2 JP 2000111560 A JP2000111560 A JP 2000111560A JP 2000111560 A JP2000111560 A JP 2000111560A JP 3411884 B2 JP3411884 B2 JP 3411884B2
- Authority
- JP
- Japan
- Prior art keywords
- earth retaining
- horizontal
- block body
- shape
- plane
- 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.)
- Expired - Fee Related
Links
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、支保工部材および
それを使用した土留支保工に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support member and an earth retaining support using the member.
【０００２】[0002]
【従来の技術】地下構造物を構築する場合の土留支保工
として、従来、例えば切梁方式、火打ち梁方式などがあ
る。切梁方式は、図４に示すように柱列式地中連続壁工
法により施工した土留壁１の内側に腹起し２と切梁３に
よる支保架構を組むもので、この支保架構で土留壁１に
かかる土圧を支えるようにしている。2. Description of the Related Art Conventionally, for example, a cut beam method and a fired beam method have been used as earth retaining and supporting works when constructing an underground structure. As shown in Fig. 4, the truss method is a method of constructing a support frame structure with an upset 2 and a girder 3 inside a retaining wall 1 constructed by a column-type underground continuous wall construction method. It is designed to support the earth pressure applied to 1.
【０００３】この場合の腹起し２の計算スパンは切梁ピ
ッチであり、図示の例では3.0mである。また、切梁３の
みが腹起し２に直接接合しているため、腹起し２の部材
は切梁ピッチによる応力計算上必要な断面性能を有する
ものにする必要がある。そして、土留壁１の３ｍ当たり
の支保工重量はＷ＝12.9ｔである。In this case, the calculation span of the abdomen 2 is the girder pitch, which is 3.0 m in the illustrated example. Further, since only the cut beam 3 is directly joined to the bulge 2, the member of the bulge 2 needs to have a cross-sectional performance necessary for stress calculation by the cut beam pitch. The supporting weight per 3 m of the retaining wall 1 is W = 12.9t.
【０００４】火打ち梁方式は、図５、図６に示すように
前記切梁方式の構造に加えて、切梁３に斜めの架設部材
である火打ち梁４を設置したものであり、この火打ち梁
４の設置により、腹起し２の計算スパンは切梁方式に比
較して2.0mになり、低減することができる。また、計算
スパンの低減によって腹起し２の部材の部材サイズまた
は設置段数の低減が可能となった。As shown in FIGS. 5 and 6, the striated beam system is a system in which, in addition to the structure of the sill beam system, a stilt beam 4, which is an oblique erection member, is installed on the sill beam 3. By installing 4, the calculation span of uprising 2 can be reduced to 2.0 m compared to the beam method. Further, the reduction of the calculation span has made it possible to reduce the member size or the number of installation steps of the member of the upset 2 member.
【０００５】ちなみに、切梁方式での腹起し２の曲げモ
ーメントの比率を1.00とすると、火打ち梁方式では0.44
となる。また、腹起し２の設置段数も切梁方式では２条
２段にして設置していたが、火打ち梁方式では縦３段と
なる。図中、５は上下の腹起し２の間に配設するチャン
ネル材、６は腹起し２を支持するアングル材を示す。By the way, assuming that the ratio of bending moments of the uprising 2 in the cutting beam method is 1.00, 0.44 in the firing beam method.
Becomes Further, the number of installation steps of the uprising 2 is set to 2 rows and 2 steps in the beam cutting method, but it is set to 3 steps in the vertical direction in the firing beam method. In the figure, 5 indicates a channel member arranged between the upper and lower waving units 2, and 6 indicates an angle member for supporting the waving unit 2.
【０００６】[0006]
【発明が解決しようとする課題】前記切梁方式では、腹
起し２の設置段数が多いためにこれを支えるためのブラ
ケット自体を大きなものにする必要があり、支保工全体
として大きな構造となって、全体的なクリアランスが少
なくなり、施工性に問題が生じることがあった。この
点、火打ち梁方式ではこれらの問題が解消されるが、切
梁３に加えて、火打ち梁４を設置する手間を要して施工
性がよくないものになっている。In the above-mentioned beam method, the number of installation steps of the uprising 2 is large, and therefore the bracket itself for supporting the uprising 2 needs to be large, resulting in a large structure for the entire supporting work. As a result, the overall clearance is reduced, which may cause a problem in workability. In this respect, although the above problems are solved by the striking beam method, it is troublesome to install the striking beam 4 in addition to the cutting beam 3 and the workability is poor.
【０００７】また、腹起しを縦方向に３段重ねて設置す
ると、全体の高さが高くなるため、設計上軸力の作用位
置を点としているものが、面としてとらえられるかたち
となり、最上段と最下段の切梁に作用する軸力が異なる
ことも予想され、最下段の切梁には設計値以上の軸力が
作用することも考えられる。[0007] If the abdomen is vertically stacked in three stages, the overall height increases, so that the point where the axial force acts on the design is a point, and it becomes a surface. It is expected that the axial forces acting on the upper and lower beams will be different, and it is also possible that the axial force above the design value will act on the lower beams.
【０００８】本発明の目的は前記従来例の不都合を解消
し、設置や撤去が容易で施工性を向上でき、火打ち梁方
式に比べて支保工部材をさらに低減でき、また、切梁の
配置も設計上の軸力作用位置により近づけることがで
き、支保工としての機能を確実に発揮できる支保工部材
およびそれを使用した土留支保工を提供することにあ
る。The object of the present invention is to eliminate the inconvenience of the above-mentioned conventional example, to easily install and remove it, to improve the workability, to further reduce the supporting members as compared with the striking beam method, and to arrange the cutting beams. An object of the present invention is to provide a supporting member that can be brought closer to the designed axial force acting position and can reliably perform the function of supporting work, and a soil retaining support using the supporting member.
【０００９】[0009]
【課題を解決するための手段】本発明は前記目的を達成
するため、支保工部材として、２本の横架材を平面Ｔ字
形に組み合わせて高力ボルトで結合するとともに、Ｔ字
形に組合わさった隅部に平面略三角形状の隅部ピースを
配置し、該隅部ピースを高力ボルトで前記２本の横架材
の側面に固定して平面Ｔ字形のブロック体に形成し、Ｔ
字形の頭部を腹起しとの接合部に、Ｔ字形の下端部を切
梁との接合部としたこと、および、横架材がＨ形鋼から
なることを要旨とするものである。In order to achieve the above-mentioned object, the present invention, as a support member, combines two horizontal members in a plane T shape, connects them with high-strength bolts, and combines them in a T shape. A substantially triangular flat corner piece is arranged at the corner, and the corner piece is fixed to the side surfaces of the two horizontal members with a high-strength bolt to form a flat T-shaped block body.
The gist of the present invention is that the head portion of the character shape is a joint portion with the abdomen, the lower end portion of the T shape is a joint portion with the cross beam, and the horizontal member is made of H-shaped steel.
【００１０】また、土留支保工としては、２本の横架材
を平面略三角形状の隅部ピースで高力ボルトを介して結
合して平面Ｔ字形のブロック体に形成した支保工部材を
使用して、Ｔ字形の頭部に位置する横架材の側面を腹起
しに接合し、Ｔ字形の下端部に位置する横架材の先端に
切梁を接合すること、および、横架材がＨ形鋼からなる
ことを要旨とするものである。As the earth retaining shoring, a shoring member formed by connecting two horizontal members with a corner piece having a substantially triangular shape in a plane through a high-strength bolt to form a T-shaped block body in a plane is used. Then, the side surface of the horizontal cross member located at the T-shaped head is joined upright, and the cutting beam is joined to the tip of the horizontal cross member located at the lower end of the T-shape, and the horizontal cross member Is made of H-section steel.
【００１１】請求項１、３記載の本発明によれば、支保
工部材をＴ字形のブロック体で構成しているから、これ
を施工現場に搬入し、腹起しに接合して、切梁を設置す
るだけでよく、火打ち梁などを別途設置する必要がな
く、施工性がよい。そして、横架材をＨ形鋼で構成する
ことで、規格品の使用が可能となり、その組み合わせに
より種々の形態、大きさのものに作製できる。According to the present invention as set forth in claims 1 and 3, since the supporting member is composed of a T-shaped block body, it is carried into a construction site, joined to the abdomen, and cut into a girder. It is only necessary to install, and there is no need to install a fired beam etc. separately, and workability is good. By constructing the horizontal member with H-shaped steel, standard products can be used, and by combining them, various shapes and sizes can be produced.
【００１２】請求項２、４記載の本発明によれば、ブロ
ック体に形成した支保工部材を設置することで、腹起し
の計算スパンを火打ち梁方式以上に低減でき、腹起し部
材の部材サイズまたは設置段数をさらに低減できる。そ
して、切梁の配置も設計上の軸力作用位置により近づけ
ることができる。また、Ｈ形鋼による横架材を使用する
ことで、規格品の使用が可能となり、その組み合わせに
より種々の形態、大きさのものに作製でき、現場の条件
に適したものが得られる。According to the present invention as set forth in claims 2 and 4, by installing the supporting member formed on the block body, the calculation span of the waving can be reduced more than that of the striking beam method, and the waving member can be reduced. The member size or the number of installation steps can be further reduced. Further, the arrangement of the beams can be made closer to the designed axial force acting position. Further, by using the horizontal cross-section material made of H-shaped steel, standard products can be used, and by combining them, products of various shapes and sizes can be manufactured, and products suitable for site conditions can be obtained.
【００１３】[0013]
【発明の実施の形態】以下、図面について本発明の実施
の形態を詳細に説明する。図１は本発明の支保工部材お
よびそれを使用した土留支保工の実施形態を示す平面
図、図２は本発明の支保工部材の実施の形態を示す斜視
図、図３は本発明の支保工部材およびそれを使用した土
留支保工の実施形態を示す縦断側面図で、図４〜図６に
示した従来例と同一の構成要素には同一の参照符号を付
してある。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is a plan view showing an embodiment of a support member of the present invention and earth retaining support using the same, FIG. 2 is a perspective view showing an embodiment of the support member of the present invention, and FIG. 3 is a support member of the present invention. FIG. 3 is a vertical sectional side view showing an embodiment of a work member and earth retaining support using the work member, and the same components as those of the conventional example shown in FIGS. 4 to 6 are designated by the same reference numerals.
【００１４】本発明は、腹起し２に切梁３を結合するた
めの支保工部材として、図２に示すようなブロック体７
を使用するものであり、このブロック体７は、Ｈ形鋼な
どによる２本の横架材８，９を平面Ｔ字形に組み合わせ
高力ボルト11で結合するとともに、Ｔ字形に組み合わさ
った隅部に平面略三角形状の隅部ピース10を配置し、こ
の隅部ピース10を高力ボルト11で前記横架材８，９の側
面に固定した。In the present invention, a block member 7 as shown in FIG. 2 is used as a support member for connecting the beam 3 to the bulge 2.
This block body 7 is constructed by combining two horizontal members 8 and 9 made of H-shaped steel and the like into a flat T-shape and connecting them with a high-strength bolt 11, and at the corners combined into a T-shape. A corner piece 10 having a substantially triangular shape in a plane is arranged on the above, and the corner piece 10 is fixed to the side surfaces of the horizontal members 8 and 9 with a high-strength bolt 11.
【００１５】そして、Ｔ字形のブロック体７の頭部に位
置する横架材８の側面を腹起し２との接合部に、Ｔ字形
のブロック体７の下部に位置する横架材９の下端部を切
梁３との接合部とした。Then, the side surface of the horizontal bridge member 8 located at the head of the T-shaped block body 7 is raised, and the horizontal bridge member 9 located at the lower portion of the T-shaped block body 7 is joined to the side surface. The lower end was used as a joint with the beam 3.
【００１６】これら横架材８，９および隅部ピース10は
それぞれ規格品の使用が可能であり、一例として、横架
材８は400 ｍｍのＨ形鋼で長さ2000ｍｍのもの、横架材
９は400 ｍｍのＨ形鋼で長さ1000ｍｍのものをそれぞれ
使用し、工場でこれらの横架材８，９および隅部ピース
10をブロック体７に組立てておく。The horizontal members 8 and 9 and the corner piece 10 can be standard products, and as an example, the horizontal member 8 is an H-shaped steel of 400 mm and a length of 2000 mm. 9 is 400 mm H-section steel with a length of 1000 mm, and these are used in the factory for these cross members 8 and 9 and corner pieces.
Assemble 10 into the block body 7.
【００１７】なお、前記横架材８，９のサイズは前記の
ように一例であり、規格品として、その他にＨ−300 、
Ｈ−350 、Ｈ−500 の使用が可能であり、その組み合わ
せにより種々の形態、大きさのものに作製できる。ま
た、切梁のピッチ、支保工重量、曲げモーメントの比
率、土留め壁の構築方法も前記したものは一例であり、
これに限定されるものではない。The sizes of the horizontal members 8 and 9 are examples as described above, and standard products such as H-300,
H-350 and H-500 can be used, and by combining them, various shapes and sizes can be produced. Further, the pitch of the girder, the weight of the supporting work, the ratio of the bending moment, and the method of constructing the earth retaining wall are also examples.
It is not limited to this.
【００１８】次にかかるブロック体７を使用する土留支
保工について説明する。柱列式地中連続壁工法などによ
り土留壁１を施工し、この内側に腹起し２を２段設置す
る。腹起し２は例えば500 ｍｍのＨ形鋼を使用する。図
中６は腹起し２を支持するアングル材、５はアングル材
６と腹起し２の間、また、腹起し２間に設置するチャン
ネル材を示す。Next, earth retaining work using the block body 7 will be described. The soil retaining wall 1 is constructed by the pillar-type underground continuous wall construction method, etc., and the inside of this is erected and 2 steps are installed in two steps. For the waving 2, for example, H-shaped steel of 500 mm is used. In the figure, reference numeral 6 denotes an angle member for supporting the uprising 2, and 5 denotes a channel member installed between the angle member 6 and the uprising 2, and between the uprising 2.
【００１９】工場で組み立てたブロック体７を車両で現
場に搬入し、荷下ろしして、上下２段のそれぞれの腹起
し２にブロック体７の横架材８の側面を当接し高力ボル
ト11で固定する。The block body 7 assembled in the factory is carried to the site by a vehicle, and the load is unloaded. Fix at 11.
【００２０】この状態で横架材９が腹起し２と直交する
方向に突出するから、横架材９の先端に切梁３の先端を
高力ボルトで固定する。そして、該切梁３の他端にジャ
ッキを設置し該ジャッキを加圧すれば、対向する腹起し
２の間にブロック体７を介して切梁３が架設され、土留
支保工が完了する。In this state, the horizontal member 9 rises and protrudes in the direction orthogonal to the horizontal member 2. Therefore, the tip of the cross beam 3 is fixed to the end of the horizontal member 9 with a high-strength bolt. Then, if a jack is installed at the other end of the cutting beam 3 and the jack is pressed, the cutting beam 3 is erected via the block body 7 between the facing uprisings 2 and the earth retaining work is completed. .
【００２１】このようにブロック体７を設置することに
より、腹起し計算スパンを1.4mに低減することができ、
その結果、腹起し部材の部材サイズまたは設置段数も低
減できる。ちなみに、腹起し２の曲げモーメントは切梁
方式の曲げモーメントを1.00とした場合に比率を0.22に
低減でき、設置段数も２段に低減できた。さらに、土留
壁１の３ｍ当たりの支保工重量もＷ＝11.8ｔとなり、切
梁方式の重量を1.00とした場合に比較して比率を0.91に
低減できた。By installing the block body 7 in this way, it is possible to reduce the calculation span of upset to 1.4 m,
As a result, the member size or the number of installation steps of the uprising member can be reduced. By the way, the bending moment of the waving 2 can be reduced to 0.22 when the bending moment of the beam method is set to 1.00, and the number of installation steps can be reduced to two steps. Furthermore, the supporting weight per 3 m of the retaining wall 1 was W = 11.8 t, and the ratio could be reduced to 0.91 compared with the case where the weight of the beam method is 1.00.
【００２２】[0022]
【発明の効果】以上述べたように本発明の支保工部材お
よびそれを使用した土留支保工は、工場で予め組み立て
たブロック体を腹起しに固定し、このブロック体に切梁
を固定するだけでよいから、設置や撤去が容易で施工性
を向上でき、工期も短縮できる。また、火打ち梁方式に
比べて支保工部材をさらに低減でき、また、切梁の配置
も設計上の軸力作用位置により近づけることができ、支
保工としての機能を確実に発揮できるものである。As described above, in the support member and the earth retaining support using the same of the present invention, the block body preassembled in the factory is fixed to the abdomen, and the cutting beam is fixed to the block body. Since it is enough, it can be installed and removed easily, the workability can be improved, and the construction period can be shortened. Further, the supporting members can be further reduced as compared with the striking beam method, and the arrangement of the cutting beams can be brought closer to the axial force acting position in the design, so that the function as the supporting work can be surely exhibited.
【図１】本発明の支保工部材およびそれを使用した土留
支保工の実施の形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of a support member and an earth retaining support using the same according to the present invention.
【図２】本発明の支保工部材の実施の形態を示す斜視図
である。FIG. 2 is a perspective view showing an embodiment of a supporting member of the present invention.
【図３】本発明の支保工部材およびそれを使用した土留
支保工の実施の形態を示す縦断側面図である。FIG. 3 is a vertical cross-sectional side view showing an embodiment of a support member and an earth retaining support using the same according to the present invention.
【図４】従来の切梁方式の土留支保工を示す平面図であ
る。FIG. 4 is a plan view showing a conventional beam retaining type earth retaining bar work.
【図５】従来の火打ち梁方式の土留支保工を示す平面図
である。FIG. 5 is a plan view showing a conventional retaining beam type earth retaining rod work.
【図６】従来の火打ち梁方式の土留支保工を示す縦断側
面図である。FIG. 6 is a vertical cross-sectional side view showing a conventional fired beam type earth retaining support work.
１…土留壁 ２…腹起し ３…切梁 ４…火打ち梁 ５…チャンネル材 ６…アングル材 ７…ブロック体 ８…横架材 ９…横架材 10…隅部ピース 11…高力ボルト 1 ... Tsurudome 2 ... Upset 3 ... Cutting beam 4 ... Fire beam 5 ... Channel material 6 ... Angle material 7 ... Block body 8 ... Horizontal material 9 ... Horizontal material 10 ... Corner piece 11 ... High-strength bolt
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭61−206742（ＪＰ，Ｕ) 実開 昭58−153244（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 17/04 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 61-206742 (JP, U) Shokai 58-153244 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) E02D 17/04
Claims (4)
て高力ボルトで結合するとともに、Ｔ字形に組合わさっ
た隅部に平面略三角形状の隅部ピースを配置し、該隅部
ピースを高力ボルトで前記２本の横架材の側面に固定し
て平面Ｔ字形のブロック体に形成し、Ｔ字形の頭部を腹
起しとの接合部に、Ｔ字形の下端部を切梁との接合部と
したことを特徴とする支保工部材。1. The two horizontal members are combined in a plane T shape and connected by a high-strength bolt, and a substantially triangular corner piece in a plane is arranged at a corner combined with the T shape. The piece is fixed to the side surfaces of the two horizontal members with a high-strength bolt to form a flat T-shaped block body, and the T-shaped head is agitated with the lower end of the T-shaped joint at the joint. A support member characterized by being a joint with a beam.
ースで高力ボルトを介して結合して平面Ｔ字形のブロッ
ク体に形成した支保工部材を使用して、Ｔ字形の頭部に
位置する横架材の側面を腹起しに接合し、Ｔ字形の下端
部に位置する横架材の先端に切梁を接合することを特徴
とする土留支保工。2. A T-shaped member using a supporting member formed by joining two horizontal members with a corner piece having a substantially triangular shape in a plane through a high-strength bolt to form a T-shaped block body in a plane. An earth retaining structure characterized in that the side surface of the horizontal member located at the head is joined to the abdomen and the cutting beam is joined to the tip of the horizontal member located at the lower end of the T-shape.
の支保工部材。3. The support member according to claim 1, wherein the cross member is made of H-section steel.
の土留支保工。4. The earth retaining bar work according to claim 2, wherein the cross member is made of H-section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000111560A JP3411884B2 (en) | 2000-04-13 | 2000-04-13 | Supporting member and earth retaining support using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000111560A JP3411884B2 (en) | 2000-04-13 | 2000-04-13 | Supporting member and earth retaining support using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001295275A JP2001295275A (en) | 2001-10-26 |
| JP3411884B2 true JP3411884B2 (en) | 2003-06-03 |
Family
ID=18623869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000111560A Expired - Fee Related JP3411884B2 (en) | 2000-04-13 | 2000-04-13 | Supporting member and earth retaining support using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3411884B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101129017B1 (en) | 2011-10-05 | 2012-03-23 | 주식회사 비앤비엠스틸 | Steel strip-strut structurte with its strip having wider width for underground retaining wall |
| JP6676341B2 (en) * | 2015-11-04 | 2020-04-08 | 丸藤シートパイル株式会社 | Sandome support structure and construction method |
| JP6757604B2 (en) * | 2016-06-15 | 2020-09-23 | 株式会社大林組 | Abdominal joint structure |
| JP6599377B2 (en) * | 2017-02-07 | 2019-10-30 | ヒロセホールディングス株式会社 | Switching hardware for cut beams |
| KR102251982B1 (en) * | 2020-06-30 | 2021-05-14 | (주)지오알앤디 | Retaining Wall System usable as building underground wall and it's Construction Method |
| CN115142417B (en) * | 2022-08-24 | 2024-03-08 | 广州市岩土勘测设计有限公司 | Construction method for dismantling rib wall of T-shaped underground diaphragm wall supporting system |
-
2000
- 2000-04-13 JP JP2000111560A patent/JP3411884B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001295275A (en) | 2001-10-26 |
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