JPS5852056B2 - Earth retaining device for cloth excavation work - Google Patents

Description

【発明の詳細な説明】 本発明は布掘工事用土留装置に関する。[Detailed description of the invention] The present invention relates to an earth retaining device for excavation work.

従来の布掘工事での土留工法として、掘削深の深い場合
や軟弱地盤に於いてはＨ形鋼材による土留杭打と横矢板
やシートパイルやトレンチシートにて土留を行い、比較
的浅い場合は木矢板を用いて行なっていた。As a conventional earth retention method for cloth excavation work, when the excavation depth is deep or in soft ground, earth retention is piled using H-beam steel and horizontal piles, sheet piles, or trench sheets. It was done using wooden piles.

然し、木製矢板は材質上耐久性に乏しく、鋼矢板を使う
場合でも並列に順に打設する為、現場施工上の難易度が
高く施工時間が長くかかる為、施工中に土砂の崩壊が発
生し、作業者の人身事故や道路面に亀裂が生じたり或い
は陥没により家屋縦側被害等の危険が極めて高いもので
あることに鑑み、本発明では従来の矢板工法よりも安全
で人身事故等前記被害を全面的に解消すべく迅速且つ簡
便にして正確な土留装置を提供せんとするものである。However, wooden sheet piles lack durability due to their material nature, and even when steel sheet piles are used, they are piled in parallel and sequentially, which makes on-site construction difficult and takes a long time, resulting in soil collapse during construction. Considering that there is an extremely high risk of injury to workers and damage to the vertical side of houses due to cracks or cave-ins in the road surface, the present invention is safer than the conventional sheet pile construction method and completely eliminates the above-mentioned damage such as injury to workers. The purpose of the present invention is to provide a quick, simple, and accurate earth retaining device to solve the problem.

本発明の土留装置に係る実施例を説明するに、１．１′
は夫々多数の鋼板材２・・・、２′を予じめ適宜巾負に
並列せしめて、その対応面に於いて、断面コ字形水平骨
材３，３′を適宜数条水平方向に配設し、前記鋼板材２
・・・、２′・・・と溶接等で一体化した鋼製連続壁部
材である。To explain the embodiment of the earth retaining device of the present invention, 1.1'
A large number of steel plates 2..., 2' are lined up in advance with appropriate widths, and on the corresponding surfaces, horizontal aggregates 3, 3' with a U-shaped cross section are arranged horizontally in several strips. and said steel plate material 2
It is a steel continuous wall member that is integrated with . . . , 2' . . . by welding or the like.

４は強力に間隔保持する緊張具であって、図示するのは
ターンバックル原理の緊張具であり、正逆相反する雌ネ
ジ部６．６’を両端に刻設した巾員調整の作動操作管５
に螺合する正逆相反する雄ネジ部８，８′を刻設させ左
右で一組を作動する螺杵７．γから成り、第２図に示す
如く、作動操作管５０前後方向回動に伴なって、螺合す
る螺杵７．γは夫々相反する方向へ一体連動する機構に
形成されており、該緊張具４を相対すれ鋼製連続壁部材
１，１′に於ける断コ字形水平骨材３，３間に差渡し、
両螺杵７．γ先端の押圧板９，９′を当接せしめた後、
適宜止着具１０例えば壁部材１，１′側に予じめ穿設し
た係合孔部１２・・・に押圧板９．グと連結ピン１１で
一体止着せしめることにより、左右相対する鋼製連続壁
部材１，１′は側面梯子形状に緊張具４が数本差渡固定
されて、一定巾負の鋼製連続壁部材Ｌｌ’は強靭な土留
めユニットＡを形成する。Reference numeral 4 denotes a tensioning device that strongly maintains the distance. 5
A screw punch 7. has male threaded portions 8, 8' which are opposed in the forward and reverse directions and which are screwed into each other and operated as a set on the left and right sides. As shown in FIG. 2, a screw punch 7. γ is formed into a mechanism that integrally interlocks in opposite directions, and the tensioning device 4 is passed between the U-shaped horizontal aggregates 3, 3 in the opposing steel continuous wall members 1, 1',
Double screw pestle 7. After bringing the pressure plates 9 and 9' at the tip of γ into contact,
Appropriate fasteners 10, for example, press plates 9. By fixing them together with the connecting pins 11, the left and right opposing steel continuous wall members 1, 1' are fixed with several tensioning tools 4 across in a side ladder shape, and a steel continuous wall of a constant width is fixed. The member Ll' forms a strong earth retaining unit A.

壁部材１，１′の上端適宜位置に吊持用係合部１３を形
成して、これに吊持鎖片１４を連結し、クレーン等で第
３図の如く剥削溝Ｘの浅い時点で嵌装し、その状態で溝
を深く掘削作業するにともなって順次下降して行けば、
第４図の如く掘削溝Ｘが所定の深さに達した時点でも掘
削作業進行中宮に土留め作用を果たす。A suspension engagement part 13 is formed at an appropriate position on the upper end of the wall members 1, 1', a suspension chain piece 14 is connected to this, and the suspension chain piece 14 is fitted into the scraping groove X at a shallow point as shown in Fig. 3 using a crane or the like. If the trench is excavated deeper and the trench is gradually lowered,
As shown in FIG. 4, even when the excavation groove X reaches a predetermined depth, it acts as a retainer while the excavation work is in progress.

当該土留めユニツ）Ａは掘削溝Ｘの長さに応じて第４図
に示す如く連接部Ｒで同一ユニツ）Ａ、Ａ’ を順次継
ぎ足して行けばよく、又掘削溝Ｘが特に深い場合には予
じめ前記ユニットＡの壁面高位の高いものを使用すれば
よく、更に掘削溝Ｘの巾員への対応は、予じめ計算値の
固定長でもよいが、あらゆる掘削現場にも迅速且つ簡易
に対応せんとすると、前記巾員調整付き緊張具４を操作
して巾員調整すればよい。Depending on the length of the excavated groove It is sufficient to use the unit A with a high wall height in advance.Furthermore, the width of the excavation groove For a simple solution, the width can be adjusted by operating the tensioning tool 4 with width adjustment.

Ｙは所定深さに掘削作業した後、目的位置に布設する配
管部材を示す。Y indicates a piping member to be installed at the target position after excavation work to a predetermined depth.

本発明は上記の如きであって、掘削溝Ｘの深さや巾員に
予じめ適合する土留めユニツ）Ａを、鋼製連続壁部材１
，１′を相対時させ、その対応面に一体形成した土留装
置において、前記土留めユニットＡを並設した多数の鋼
板材２と、該鋼板材２の内壁面に配設固定した数条の水
平骨材３とで一体化した鋼製連続壁部材１となし、前記
緊張具４を、一端部に抑圧板９を固定し、他端部に雄ネ
ジ部８を刻設した螺杵７の左右−組と、当該螺杵７の雄
ネジ部８に、雄ネジ部６を内部に刻設した作動操作管５
を螺合支持し、その内、水平骨材３に当接支持する一ｔ
ｌ’ｔｌＥ板９を、当該抑圧板９と水平骨材３の係合孔
部１２との間に挿通した連結ピン１１で支持固定し、前
記作動操作管５の回動によって左右−組の螺杵７を左右
相反方向へ連動させるように構成したことを特徴とする
布掘工事用土留装置としたので、第３図の如く浅い掘削
溝Ｘの時点でクレーン等で吊持嵌装せしめ、土留めしな
がら掘削作業が進行するにともない、当該ユニットＡを
次第に下降せしめれば、所定の深さまで掘削作業に際し
ては溝周壁の崩壊の危険性は解消され、極めて安全な掘
削作業を行ない得ると共に、土留めユニットＡは連続壁
部材１，１′と緊張具４を夫々組立、分解自在に一体構
成しているので、構造簡単にして組立分解操作も簡便で
あり、取扱操作容易にして、迅速な作業を可能にするの
で、水道管、電カケープル、ガス管等の布設工事や建築
基礎工事の布掘等多分野の布設工事に於げる土留効果は
、従来の木矢板土留工法と比較した場合に、その労働力
に於いて約３０〜４０％の節減となり、作業能率に於い
ては３〜４倍の能力を発揮すると共に、布掘工事に於け
る最も重要である土砂崩壊の危険性が解消出来、作業安
全管理上類ぶる優れた効果をもたらす発明である。The present invention is as described above, and the earth retaining unit (A) which is adapted in advance to the depth and width of the excavated groove
. A steel continuous wall member 1 is integrated with a horizontal aggregate 3, and the tensioning tool 4 is a screw punch 7 with a suppressing plate 9 fixed to one end and a male screw part 8 carved at the other end. Left and right set, and an actuating operation tube 5 in which a male threaded portion 6 is carved inside the male threaded portion 8 of the screw punch 7.
One t is screwed and supported, and one t is supported in contact with the horizontal aggregate 3.
The l'tlE plate 9 is supported and fixed by a connecting pin 11 inserted between the suppression plate 9 and the engagement hole 12 of the horizontal aggregate 3, and the right and left sets of screws are rotated by the rotation of the actuation operation tube 5. Since the soil retaining device for cloth excavation work is characterized in that the punches 7 are configured to move in opposite directions, the earth retaining device is used to suspend the soil by a crane or the like at the point of shallow excavation trench X as shown in Fig. 3. If the unit A is gradually lowered as the excavation work progresses while keeping the excavation work in place, the danger of collapse of the trench surrounding wall will be eliminated when the excavation work is carried out to a predetermined depth, and the excavation work can be performed extremely safely. The earth retaining unit A has continuous wall members 1, 1' and the tensioning device 4 that are integrally constructed so that they can be assembled and disassembled, so the structure is simple and the assembly and disassembly operations are simple, making handling easy and quick. When compared with the conventional wood pile earth retaining method, the earth retaining effect in many fields of laying work such as laying water pipes, electric cables, gas pipes, etc., and excavating cloth for building foundation work, etc. In addition, the labor force is reduced by approximately 30 to 40%, the work efficiency is increased by 3 to 4 times, and the risk of landslides, which is the most important in cloth excavation work, is reduced. This is an invention that can solve the problem and bring about superior effects in terms of work safety management.

同、・本発明の土留めユニツ）Ａは、予じめ組立てた状
態で第３図の如く嵌装支持せしめても或いは同図の如く
比較的危険性のない浅い掘削溝の状態で該溝内で当該ユ
ニットＡを組立てもこともできる。The earth retaining unit of the present invention) A can be fitted and supported as shown in Figure 3 in a pre-assembled state, or it can be installed in a shallow excavated trench with relatively no danger as shown in the same figure. It is also possible to assemble the unit A within.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は連続壁部材１又は１′の対応面を示す正面図、
第２図は緊張具４の縦断面図、第３図は土留めユニツ）
Ａの嵌装置後の情況説明図、第４図は同嵌装状態で所定
深さまで下降せしめた状態の斜視図である。 Ａ・・・土留めユニット、Ｘ・・・掘削溝、Ｙ・・・配
管部材、Ｒ・・・ユニットの連接部、１・・・鋼製連続
壁部材、２・・・鋼板材、３・・・水平骨材、４・・・
緊張具、５・・・作動操作管、６・・・雌ネジ部、７・
・・螺杵、８・・・雄ネジ部、９・・・押圧板、１０・
・・止着具、１１・・・連結ピン、１２・・・係合孔部
、１３・・・吊持用係合部、１４・・・吊持鎖片。FIG. 1 is a front view showing the corresponding surface of the continuous wall member 1 or 1';
Figure 2 is a longitudinal cross-sectional view of the tensioning device 4, Figure 3 is the earth retaining unit)
FIG. 4 is a perspective view showing the state of the fitting device A after being lowered to a predetermined depth in the same fitting state. A... Earth retaining unit, X... Excavation groove, Y... Piping member, R... Unit connection part, 1... Steel continuous wall member, 2... Steel plate material, 3...・Horizontal aggregate, 4...
Tension tool, 5... Actuation operation tube, 6... Female threaded part, 7.
...Screw punch, 8...Male thread part, 9...Press plate, 10.
... Fastening tool, 11... Connection pin, 12... Engagement hole portion, 13... Hanging engagement portion, 14... Hanging chain piece.

Claims (1)

【特許請求の範囲】[Claims] １ 掘削溝Ｘの両側壁に土留めユニットＡを配設し、当
該左右の土留めユニッ）Ａ間に間隙調整自在な緊張具４
を差渡し形成した土留装置において、前記土留めユニッ
トＡを並設した多数の鋼板材２と、該鋼板材２の内壁面
に配設固定した数条の水平骨材３とで一体化した鋼製連
続壁部材１となし、前記緊張具４を、一端部に抑圧板９
を固定し、他端部に雄ねじ部８を刻設した螺杵７の左右
−組と、当該螺杵７の雄ねじ部８に、雌ねじ部６を内部
に刻設した作動操作管５を螺合支持し、その内、水平骨
材３に当接支持する抑圧板９を、当該押圧板９と水平骨
材３の係合孔部１２との間に挿通した連結ピン１１で支
持固定し、前記作動操作管５の回動によって左右−組の
螺杵７を左右相反方向へ連動させるように構成したこと
を特徴とする布掘工事用土留装置。1 Install earth retaining units A on both sides of the excavated groove
In the earth retaining device formed across the earth retaining unit A, a steel plate integrated with a large number of steel plates 2 on which the earth retaining units A are arranged in parallel, and several horizontal aggregates 3 arranged and fixed on the inner wall surface of the steel plates 2. made of a continuous wall member 1, and the tensioning device 4 is attached to one end with a suppression plate 9.
is fixed, and the left and right sets of screw punches 7 each having a male threaded portion 8 carved in the other end thereof are screwed together, and the actuating operation tube 5 having a female threaded portion 6 carved inside thereof is screwed into the male threaded portion 8 of the screw punch 7. The suppressing plate 9 which is supported in contact with the horizontal aggregate 3 is supported and fixed by a connecting pin 11 inserted between the pressing plate 9 and the engagement hole 12 of the horizontal aggregate 3. This earth retaining device for cloth excavation work is characterized in that it is constructed so that the right and left pairs of screw punches 7 are interlocked in left and right opposite directions by the rotation of the actuation operation tube 5.