JPH08218378A - Earth retaining method - Google Patents
Earth retaining methodInfo
- Publication number
- JPH08218378A JPH08218378A JP5057295A JP5057295A JPH08218378A JP H08218378 A JPH08218378 A JP H08218378A JP 5057295 A JP5057295 A JP 5057295A JP 5057295 A JP5057295 A JP 5057295A JP H08218378 A JPH08218378 A JP H08218378A
- Authority
- JP
- Japan
- Prior art keywords
- wall member
- pile
- ground
- members
- mountain retaining
- 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.)
- Pending
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地盤掘削における山留
工法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mountain retaining method for ground excavation.
【０００２】[0002]
【従来の技術】地盤掘削に際し必要となる山留壁は、従
来から図４に示すように、Ｈ鋼等の杭部材ａを所定間隔
で打設し、杭部材ａの前面を掘削した後、杭部材ａ間に
矢板ｂを取り付けて山留めすることが多く、また掘削深
さが大となった場合では、腹越し部材ｃを設置し、アン
カ−ｄや切梁などの支保部材を併用していた。2. Description of the Related Art Conventionally, as shown in FIG. 4, pile retaining members a, such as H steel, are piled at predetermined intervals to excavate the front surface of the pile retaining members, as shown in FIG. In many cases, sheet piles b are attached between pile members a and piled up, and when the excavation depth becomes large, the abdomen member c is installed and a supporting member such as an anchor d or a cross beam is also used. It was
【０００３】[0003]
【発明が解決しようとする課題】上記の従来技術には、
次のような問題点が存在する。 ＜イ＞従来工法では、矢板ｂの取り付けのため、杭部材
ａの背面掘削が必要で、これによる地盤の緩みや崩落が
発生し危険を伴う作業が不可欠であった。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
There are the following problems. <a> In the conventional method, back pile excavation of the pile member a is required to attach the sheet pile b, and the loosening or collapse of the ground due to this is necessary and dangerous work is indispensable.
【０００４】＜ロ＞腹起し部材ｃを設置する場合では、
これの占めるスペ−スを別途確保する必要があり、山留
規模を拡大したり掘削側に建造する構造物の諸元変更
や、建設方法を変更させるなどの対策が必要で、経済的
には不経済な建設工事を余儀なくされていた。<B> When the uprising member c is installed,
It is necessary to secure the space that this occupies separately, and it is necessary to take measures such as expanding the scale of the mountain retention, changing the specifications of the structure to be built on the excavation side, and changing the construction method. He was forced to do uneconomical construction work.
【０００５】[0005]
【本発明の目的】本発明は、上記のような問題点を解決
するためになされたもので、地盤の緩みや崩落を防止し
て作業の安全性を確保できると共に、山留施工のための
スペ−スを小規模に止めて経済性を向上させることがで
きる山留工法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to prevent loosening and collapse of the ground to ensure the safety of work and at the same time, for the construction of mountain retention. It is an object of the present invention to provide a mountain retaining method that can improve the economy by keeping the space small.
【０００６】[0006]
【課題を解決するための手段】即ち、本発明は、複数の
杭部材を所定の間隔をおいて地中に打設し、前記杭部材
群の前面側を掘削すると共に、杭部材間を凹状に掘削
し、その凹状の掘削部と合致させて凹状の壁部材を前記
杭部材間に取り付けたことを特徴とした、山留工法であ
る。また、前記杭部材間に取り付けた前記壁部材の背面
と地山との空隙に、充填材を注入することを特徴とし
た、山留工法である。また、前記充填材は前記壁部材に
開設した注入孔より注入することを特徴とした、山留工
法である。また、前記杭部材に取り付けた前記壁部材を
貫通させて、背面地山にアンカ−を打設することを特徴
とした、山留工法である。また、前記アンカ−の頭部
は、前記壁部材の前面形状に合致させて設置した支圧板
に定着することを特徴とした、山留工法である。また、
前記壁部材の少なくとも前面の形状を上下方向に連続す
る波状に形成し、前記アンカ−の頭部は、前記壁部材の
波状の前面に合致させて設置した支圧板に定着すること
を特徴とした、山留工法である。また、前記アンカ−の
頭部は、台座を介して前記支圧板に設置することを特徴
とした、山留め工法である。また、前記台座は、一体の
台座部とガイドパイプ部とよりなり、かつそれらの軸方
向に挿通孔を有しており、前記ガイドパイプ部を前記支
圧板と前記壁部材に貫通させて配置すると共に、前記台
座部を前記支圧板の前面に設置し、前記挿通孔内に収納
された前記アンカ−の頭部を前記台座部の台座面に定着
することを特徴とした、山留工法である。さらに、前記
壁部材は引っ張り強度の高い材料からなることを特徴と
した、山留工法である。That is, according to the present invention, a plurality of pile members are driven into the ground at a predetermined interval to excavate the front side of the pile member group and form a recess between the pile members. The mountain retaining method is characterized in that the concave wall member is attached between the pile members so as to match the concave excavated portion. Further, the mountain retaining method is characterized in that a filler is injected into a gap between the back surface of the wall member attached between the pile members and the ground. The filling material is injected from an injection hole formed in the wall member, which is a mountain retaining method. Further, the mountain retaining method is characterized in that the wall member attached to the pile member is penetrated and an anchor is driven on the back ground. In addition, the head of the anchor is a mountain retaining method characterized in that it is fixed to a pressure plate installed so as to match the front shape of the wall member. Also,
At least the front surface of the wall member is formed in a wavy shape continuous in the vertical direction, and the head of the anchor is fixed to a pressure plate installed so as to match the wavy front surface of the wall member. The Yamadome method. In addition, the head of the anchor is installed on the bearing plate via a pedestal, which is a mountain retaining method. Further, the pedestal is composed of an integrated pedestal portion and a guide pipe portion and has an insertion hole in the axial direction thereof, and the guide pipe portion is arranged so as to penetrate the pressure bearing plate and the wall member. At the same time, the pedestal portion is installed on the front surface of the pressure support plate, and the head of the anchor housed in the insertion hole is fixed to the pedestal surface of the pedestal portion. . Further, the wall retaining method is characterized in that the wall member is made of a material having high tensile strength.
【０００７】[0007]
【実施例】以下、図１〜３を参照しながら、本発明の一
実施例について説明する。 ＜イ＞杭部材の打設 鋼管、Ｈ鋼など複数の杭部材１を、地盤に先行的に所定
の間隔をおいて、鉛直あるいは僅かに斜めに傾斜させて
打設する。このとき杭部材１にＨ鋼を用いた場合は、Ｈ
鋼の平行な２面を掘削側前面と地山側背面に位置するよ
うに打設する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. <B> Pile Member Placing A plurality of pile members 1 such as steel pipes and H-steel are preliminarily placed at predetermined intervals on the ground and vertically or slightly inclined. At this time, if H steel is used for the pile member 1,
Two parallel steel faces are placed so that they are located on the front face on the excavation side and the rear face on the natural ground side.
【０００８】＜ロ＞掘削 杭部材１群の前面側を所定深度まで掘削すると共に、杭
部材１間を凹状に掘削する。地盤によって凹状掘削が精
度良く行うことが困難な場合には、多少掘り込みぎみに
掘削し、後述するように壁部材を取り付けた後に充填材
を充填すればよい。<B> Excavation The front surface side of the group of pile members 1 is excavated to a predetermined depth and the space between the pile members 1 is excavated in a concave shape. When it is difficult to perform the concave excavation with high accuracy by the ground, the excavation may be performed to some extent, and the filler may be filled after attaching the wall member as described later.
【０００９】＜ハ＞壁部材の取り付け 壁部材２は、上記の凹状の掘削溝に合致する凹状の板体
であり、その左右の側縁部には杭部材１に接合するため
の接合片２１が設けられている。接合片２１は種々の形
状が考えられるが、例えば図１に示すように、壁部材２
の左右の側縁部に、上下方向に間隔をおいて複数の板片
を突設し、隣接して取り付けられる壁部材２の板片と噛
み合わせて接合する構成が考えられる。また、接合片２
１は、壁部材２の左右の側縁部に上下方向に連続する帯
板片を設け、隣接して取り付けられる壁部材２の帯板片
と重合させて接合する構成も考えられる。<C> Attachment of Wall Member The wall member 2 is a concave plate body that matches the above-mentioned concave excavation groove, and the left and right side edge portions thereof are joint pieces 21 for joining the pile member 1. Is provided. The joining piece 21 may have various shapes. For example, as shown in FIG.
A configuration is conceivable in which a plurality of plate pieces are provided on the left and right side edge portions of the wall member 2 so as to be spaced apart in the vertical direction, and the plate pieces of the wall members 2 mounted adjacent to each other are engaged and joined. Also, the joining piece 2
As for No. 1, it is also conceivable that a strip plate piece that is continuous in the up-down direction is provided on the left and right side edge portions of the wall member 2, and the strip plate pieces of the wall members 2 that are mounted adjacent to each other are superposed and joined.
【００１０】壁部材２の材料としては、山留壁として引
っ張り強度の高い鋼材や鉄筋、樹脂などを用いる。また
図１に示すように、壁部材２の適所、特に接合片２１寄
りには充填材の注入孔２２が所要数開設されており、さ
らに図３に示すように、壁部材２のほぼ中央に、後述の
アンカ−４を設置するためのアンカ−孔２３が所定の角
度で開設されている。また、図３に示すように、壁部材
２の掘削側前面２４のみか、あるいは前面２４と地山側
背面の両面とを、ライナ−プレ−トのように上下方向に
連続する波状に形成して強度を高めることもできる。As the material of the wall member 2, a steel material having high tensile strength, a reinforcing bar, a resin or the like is used as a mountain retaining wall. Further, as shown in FIG. 1, a required number of filler injection holes 22 are formed at appropriate positions of the wall member 2, particularly near the joint piece 21, and as shown in FIG. An anchor hole 23 for installing an anchor-4 described later is opened at a predetermined angle. Further, as shown in FIG. 3, only the excavation side front surface 24 of the wall member 2 or both the front surface 24 and both the ground side and the rear surface are formed in a continuous wave shape in the vertical direction like a liner plate. Strength can also be increased.
【００１１】上記のように構成された壁部材２を、掘削
された空間に露出する杭部材１間に取り付ける。取り付
け方法は、壁部材２の背面を凹状掘削部と合致させ、両
側縁部の接合片２１を杭部材１にボルト止めあるいは溶
接等で接合する。なお、図３に示すように、壁部材２と
背面地山間に空隙が発生する場合は、注入孔２２等を介
してモルタルや砂などの充填材３をその空隙に充填し、
壁部材２と背面地山との接触性を確保する。The wall member 2 constructed as described above is mounted between the pile members 1 exposed in the excavated space. As for the mounting method, the back surface of the wall member 2 is matched with the recessed excavation portion, and the joining pieces 21 on both side edge portions are joined to the pile member 1 by bolting or welding. As shown in FIG. 3, when a void is generated between the wall member 2 and the back ground, the filler 3 such as mortar or sand is filled in the void through the injection hole 22 or the like,
The contact between the wall member 2 and the back ground is secured.
【００１２】＜ニ＞アンカ−の定着 杭部材１間に取り付けた壁部材２のアンカ−孔２３を貫
通させて、背面地山にアンカ−４を打設する。この際
に、アンカ−４の頭部は、図３に示すような支圧板５と
台座６を介して壁部材２に定着される。支圧板５は、壁
部材２の前面２４の形状に合致する設置面５１を有して
おり、壁部材２の前面２４が波状に形成されている場合
は、やはりそれに合致するよう波状に形成されている。
また、そのほぼ中央には台座取付孔５２が、アンカ−４
の所定の設置角度を以て開設されている。なお、支圧板
５の大きさは、杭部材１間全体に亘る大きい寸法のもの
から、図１に記載したような小さいものまで適宜選択で
きる。<D> Fixing of anchors The anchor holes 23 of the wall members 2 mounted between the pile members 1 are passed through, and the anchors 4 are driven on the back ground. At this time, the head of the anchor-4 is fixed to the wall member 2 via the bearing plate 5 and the pedestal 6 as shown in FIG. The pressure support plate 5 has an installation surface 51 that conforms to the shape of the front surface 24 of the wall member 2, and when the front surface 24 of the wall member 2 is corrugated, it is also corrugated to conform to it. ing.
In addition, a pedestal mounting hole 52 is formed in the center of the anchor-4.
It is opened with a predetermined installation angle. The size of the support plate 5 can be appropriately selected from a large size over the entire space between the pile members 1 to a small size as shown in FIG.
【００１３】台座６は、一体の台座部６１とガイドパイ
プ部６２とよりなり、かつそれらの軸方向に挿通孔６３
を有している。挿通孔６３は、台座部６１の座面６４に
対してアンカ−４の所定の設置角度を以て形成されてお
り、また台座面６５と挿通孔６３とは直角に形成されて
いる。なお、支圧板５と台座６は、鋼製、コンクリ−ト
製、樹脂製などのいずれの材質でも可能である。The pedestal 6 comprises a pedestal portion 61 and a guide pipe portion 62 which are integrated with each other, and has an insertion hole 63 in the axial direction thereof.
have. The insertion hole 63 is formed at a predetermined installation angle of the anchor-4 with respect to the seat surface 64 of the pedestal portion 61, and the pedestal surface 65 and the insertion hole 63 are formed at a right angle. The bearing plate 5 and the pedestal 6 can be made of any material such as steel, concrete, and resin.
【００１４】上記のように構成された支圧板５と台座６
を、壁部材２のアンカ−孔２３を介して打設されたアン
カ−４の頭部に装着する。装着方法は、先ず、台座６の
ガイドパイプ部６２を支圧板５の台座取付孔５２内に挿
入し、台座部６１の座面６４を支圧板５の前面５３に当
接させて組み付ける。そして、挿通孔６３内にアンカ−
４の頭部を挿通させ、支圧板５の設置面５１を壁部材２
の前面２４に合致させた後、アンカ−４を緊張し定着具
７で定着を行う。なお、アンカ−にはボルトを用いるこ
ともできる。The bearing plate 5 and the pedestal 6 constructed as described above.
Is attached to the head of the anchor-4 that is driven through the anchor hole 23 of the wall member 2. As for the mounting method, first, the guide pipe portion 62 of the pedestal 6 is inserted into the pedestal mounting hole 52 of the pressure bearing plate 5, and the seat surface 64 of the pedestal portion 61 is brought into contact with the front surface 53 of the pressure bearing plate 5 to be assembled. Then, the anchor is inserted in the insertion hole 63.
4 is inserted, and the installation surface 51 of the pressure support plate 5 is attached to the wall member 2
After being fitted to the front surface 24 of the anchor 4, the anchor 4 is tensioned and fixing is performed by the fixing tool 7. A bolt may be used as the anchor.
【００１５】上記の一連の作業を所定掘削深さまで繰り
返して行い、所要規模の山留壁を施工する。なお、山留
壁の変形を抑制した場合には、杭部材１の頭部間を鉄筋
コンクリ−トなどで連結してもよい。The above-mentioned series of operations are repeated until a predetermined excavation depth is reached to construct a mountain retaining wall of a required scale. In addition, when the deformation of the mountain retaining wall is suppressed, the head portions of the pile members 1 may be connected to each other by a reinforcing bar concrete or the like.
【００１６】[0016]
【本発明の効果】本発明は以上説明したようになるた
め、次のような効果を得ることができる。 ＜イ＞従来のように杭部材の背面を掘削しなくても、杭
部材間を凹状に掘削するだけで済むため、地盤の緩みや
崩落のおそれがなくなり、作業の安全性を確保すること
ができる。Since the present invention has been described above, the following effects can be obtained. <B> Since it is only necessary to excavate between the pile members in a concave shape without excavating the back surface of the pile members as in the past, there is no risk of loosening or collapse of the ground, and work safety can be ensured. it can.
【００１７】＜ロ＞壁部材に直接アンカ−を設置し、壁
部材を引張材のように用いることができるため、従来の
ような腹越し部材は不要となり、山留施工のスペ−スを
小規模に止めて経済性を向上させることができる。ま
た、腹越し部材を取り付ける工程が省けるため、施工期
間の短縮を図ることができる。<B> Since the anchor can be installed directly on the wall member and the wall member can be used like a tension member, the conventional belly member is not required, and the space for construction of the Yamadome is small. The economy can be improved by stopping at the scale. Moreover, since the step of attaching the transversal member can be omitted, the construction period can be shortened.
【００１８】＜ハ＞支圧板の設置部分と杭部材の２か所
から地盤にアンカ−の荷重が伝達されるため、アンカ−
の荷重を広く分散させて背面地山に伝達することができ
る。従って、背面地山の主動範囲すなわち緩みの発生し
ている範囲を狭くすることができ、地盤の長期安定を図
ることができる。<C> Since the load of the anchor is transmitted to the ground from two places, the installation portion of the pressure bearing plate and the pile member, the anchor is
The load of can be widely distributed and transmitted to the back ground. Therefore, the driving range of the back ground, that is, the range where looseness occurs can be narrowed, and the ground can be stabilized for a long period of time.
【００１９】＜ニ＞アンカ−の支圧板の設置面を、壁部
材の前面と合致する形状にすることによって、アンカ−
頭部の壁部材への定着性を確実なものにすることができ
る。<D> The anchor bearing plate is provided with a mounting surface that conforms to the front surface of the wall member.
The fixing property of the head portion to the wall member can be ensured.
【図１】 本発明の山留工法の一実施例の斜視図FIG. 1 is a perspective view of an embodiment of a mountain retaining method according to the present invention.
【図２】 本発明の山留工法の一実施例の横断面図FIG. 2 is a cross-sectional view of an embodiment of the Yamadome method of the present invention.
【図３】 アンカ−頭部付近の拡大説明図FIG. 3 is an enlarged explanatory view of the vicinity of the anchor-head.
【図４】 従来技術の説明図FIG. 4 is an explanatory diagram of a conventional technique.
Claims (9)
に打設し、 前記杭部材群の前面側を掘削すると共に、杭部材間を凹
状に掘削し、 その凹状の掘削部と合致させて凹状の壁部材を前記杭部
材間に取り付けたことを特徴とした、 山留工法。1. A plurality of pile members are driven into the ground at a predetermined interval to excavate the front side of the pile member group and excavate concavely between the pile members to form a concave excavation portion. The Yamadome method is characterized in that concave wall members are fitted together and attached between the pile members.
記杭部材間に取り付けた前記壁部材の背面と地山との空
隙に、充填材を注入することを特徴とした、山留工法。2. The mountain retaining method according to claim 1, wherein a filler is injected into a gap between the back surface of the wall member mounted between the pile members and the ground. .
記充填材は前記壁部材に開設した注入孔より注入するこ
とを特徴とした、山留工法。3. The mountain retaining method according to claim 2, wherein the filler is injected through an injection hole formed in the wall member.
工法において、前記杭部材に取り付けた前記壁部材を貫
通させて、背面地山にアンカ−を打設することを特徴と
した、山留工法。4. The mountain retaining method according to any one of claims 1 to 3, wherein the wall member attached to the pile member is penetrated and an anchor is driven in the back ground. , Yamadome method.
記アンカ−の頭部は、前記壁部材の前面形状に合致させ
て設置した支圧板に定着することを特徴とした、山留工
法。5. The mountain retaining method according to claim 4, wherein the head of the anchor is fixed to a pressure plate installed in conformity with the front shape of the wall member. .
記壁部材の少なくとも前面の形状を上下方向に連続する
波状に形成し、前記アンカ−の頭部は、前記壁部材の波
状の前面に合致させて設置した支圧板に定着することを
特徴とした、山留工法。6. The mountain retaining method according to claim 4, wherein at least the front surface of the wall member is formed in a wavy shape continuous in the vertical direction, and the head of the anchor is the wavy front surface of the wall member. The Yamadome method is characterized in that it is fixed to the bearing plate installed according to the above.
て、前記アンカ−の頭部は、台座を介して前記支圧板に
設置することを特徴とした、山留め工法。7. The mountain retaining method according to claim 5 or 6, wherein the head portion of the anchor is installed on the bearing plate via a pedestal.
記台座は、一体の台座部とガイドパイプ部とよりなり、
かつそれらの軸方向に挿通孔を有しており、前記ガイド
パイプ部を前記支圧板と前記壁部材に貫通させて配置す
ると共に、前記台座部を前記支圧板の前面に設置し、前
記挿通孔内に収納された前記アンカ−の頭部を前記台座
部の台座面に定着することを特徴とした、山留工法。8. The mountain retaining method according to claim 7, wherein the pedestal comprises an integrated pedestal portion and a guide pipe portion,
Further, it has an insertion hole in the axial direction thereof, the guide pipe portion is arranged to penetrate the pressure bearing plate and the wall member, and the pedestal portion is installed on the front surface of the pressure bearing plate, and the insertion hole is formed. A mountain retaining method wherein the head of the anchor housed inside is fixed to the pedestal surface of the pedestal portion.
工法において、前記壁部材は引っ張り強度の高い材料か
らなることを特徴とした、山留工法。9. The mountain retaining method according to any one of claims 1 to 8, wherein the wall member is made of a material having high tensile strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5057295A JPH08218378A (en) | 1995-02-15 | 1995-02-15 | Earth retaining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5057295A JPH08218378A (en) | 1995-02-15 | 1995-02-15 | Earth retaining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08218378A true JPH08218378A (en) | 1996-08-27 |
Family
ID=12862720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5057295A Pending JPH08218378A (en) | 1995-02-15 | 1995-02-15 | Earth retaining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08218378A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010265610A (en) * | 2009-05-12 | 2010-11-25 | Ohbayashi Corp | Earth retaining wall structure and construction method for the earth retaining wall structure |
| CN105019463A (en) * | 2015-08-06 | 2015-11-04 | 北车建设工程有限责任公司 | Integral tension type large-section underground structure and construction method thereof |
| JP2019218726A (en) * | 2018-06-18 | 2019-12-26 | 積水化学工業株式会社 | Reinforcement anchor |
-
1995
- 1995-02-15 JP JP5057295A patent/JPH08218378A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010265610A (en) * | 2009-05-12 | 2010-11-25 | Ohbayashi Corp | Earth retaining wall structure and construction method for the earth retaining wall structure |
| CN105019463A (en) * | 2015-08-06 | 2015-11-04 | 北车建设工程有限责任公司 | Integral tension type large-section underground structure and construction method thereof |
| JP2019218726A (en) * | 2018-06-18 | 2019-12-26 | 積水化学工業株式会社 | Reinforcement anchor |
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