JPH0663236B2 - Dismantling construction method for mountain retaining support - Google Patents
Dismantling construction method for mountain retaining supportInfo
- Publication number
- JPH0663236B2 JPH0663236B2 JP9627789A JP9627789A JPH0663236B2 JP H0663236 B2 JPH0663236 B2 JP H0663236B2 JP 9627789 A JP9627789 A JP 9627789A JP 9627789 A JP9627789 A JP 9627789A JP H0663236 B2 JPH0663236 B2 JP H0663236B2
- Authority
- JP
- Japan
- Prior art keywords
- mountain retaining
- support
- dismantling
- mountain
- work
- 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 - Lifetime
Links
- 238000010276 construction Methods 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、対向する山留め壁間を支えている山留め支保
工の解体工法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for dismantling a mountain retaining support that supports between opposing mountain retaining walls.
（従来の技術） 従来、地下コンクリート躯体工事は、第３図に示すよう
にＨ鋼１を用いた山留め壁２で山留めをしつつ地下１階
の地下コンクリート躯体３のコンクリート打設を行う。
この場合、対向する山留め壁２間は、１段目の切梁より
なる山留め支保工４で支えて、該山留め壁２の倒れを防
止している。(Prior Art) Conventionally, in an underground concrete skeleton construction, as shown in FIG. 3, while placing a mountain with a mountain retaining wall 2 using H steel 1, concrete is poured into the underground concrete skeleton 3 on the first basement floor.
In this case, the space between the facing mountain retaining walls 2 is supported by the mountain retaining supports 4 composed of the first-stage beams to prevent the mountain retaining walls 2 from collapsing.
このような山留め支保工４は、地下躯体３のコンクリー
ト工事の進捗と共に順次解体していく。地下１階の地下
コンクリート躯体３の打設後は、１段目の山留め支保工
４を解体する。この時、山留め壁２のＨ鋼１は片持ち梁
となる。Such a mountain retaining structure 4 will be dismantled one by one as the concrete construction of the underground structure 3 progresses. After placing the basement concrete structure 3 on the first basement floor, the first-stage mountain retaining support 4 is dismantled. At this time, the H steel 1 of the mountain retaining wall 2 becomes a cantilever.
（発明が解決しようとする課題） １段目の山留め支保工４の解体後に、地下１階の階高が
高い場合には、土圧で山留め壁２が第４図に示すように
大きく変形してしまう問題点があった。(Problems to be Solved by the Invention) After the dismantling of the first-stage mountain retaining support work 4, if the floor height of the first basement is high, the mountain retaining wall 2 is largely deformed by earth pressure as shown in FIG. There was a problem that caused it.
本発明の目的は、１段目の山留め支保工の解体後に山留
め壁が変形するのを防止できる山留め支保工の解体工法
を提供することにある。An object of the present invention is to provide a dismantling method for a mountain retaining support which can prevent the mountain retaining wall from being deformed after disassembling the first retaining structure.
（課題を解決するための手段） 上記の目的を達成するための本発明の手段を説明する
と、本発明は対向する山留め壁間を支えている山留め支
保工を地下コンクリート躯体工事の進捗につれて解体す
る山留め支保工の解体工法において、対向する前記山留
め壁を構成する両側のＨ鋼間に、盛り替え支保工をその
両端の差込み式盛り替え治具を該両側のＨ鋼の上端に差
込むことにより先に取付けておき、該盛り替え支保工で
支えつつ１段目の前記山留め支保工を解体することを特
徴とする。(Means for Solving the Problem) Explaining the means of the present invention for achieving the above-mentioned object, the present invention dismantles the mountain retaining supports supporting between the opposing mountain retaining walls as the progress of underground concrete framing work. In the dismantling method of the mountain retaining support, by inserting the refilling retaining works between the H steels on both sides constituting the mountain retaining wall facing each other, the plug-in type refilling jigs at both ends thereof are inserted into the upper ends of the H steels on both sides. It is characterized in that it is attached first, and the mountain retaining support work of the first stage is disassembled while being supported by the refill support work.
（作用） このように１段目の山留め支保工の解体前に、対向する
山留め壁間を盛り替え支保工で支えておくと、該１段目
の山留め支保工の解体後に山留め壁が変形するのを防止
する。該盛り替え支保工は、山留め壁のＨ鋼の上端に差
込み式盛り替え治具で取付けるので、盛り替え作業が容
易となると共に盛り替え支保工の再利用が可能となる。(Operation) As described above, before the dismantling of the first-stage mountain retaining support work, if the space between the opposing mountain retaining walls is supported by the remounting support work, the mountain retaining wall is deformed after the first-stage mountain retaining support is dismantled. Prevent. Since the refilling support work is attached to the upper end of the H steel of the mountain retaining wall with the plug-in refilling jig, the refilling work can be facilitated and the refilling support work can be reused.
（実施例） 以下、本発明の一実施例を第１図及び第２図（Ａ）〜
（Ｄ）を参照して詳細に説明する。(Embodiment) Hereinafter, one embodiment of the present invention will be described with reference to FIG. 1 and FIG.
This will be described in detail with reference to (D).
第２図（Ａ）に示すように、地下１階床の地下コンクリ
ート躯体３の打設工事は、１段目の山留め支保工４で対
向する山留め壁２間を支えた状態で行う。As shown in FIG. 2 (A), the construction work of the underground concrete skeleton 3 on the first basement floor is performed in a state in which the opposing mountain retaining walls 2 are supported by the first stage mountain retaining supports 4.
地下１階床の地下コンクリート躯体３の工事後に、第２
図（Ｂ）に示すように、対向する山留め壁２間を盛り替
え支保工５で支える。この盛り替え支保工５は、第１図
に示すように、その両端に複数の差込み式盛り替え治具
６が連結鋼７で連結されていて、これら差込み式盛り替
え治具６を両側の山留め壁２の各Ｈ鋼１の上端に差込む
ことにより取付ける。差込み式盛り替え治具６は、例え
ば１対の溝形鋼を背中合せに組み合せ、これら溝形鋼の
上部側を相互に連結した構造になっていて、下側の両溝
形鋼間に山留め壁２のＨ鋼１のウエブを入れるようにし
て該Ｈ鋼１に差込んで取付ける。After the construction of the underground concrete frame 3 on the first basement floor,
As shown in FIG. 3B, the space between the facing mountain retaining walls 2 is supported by the reshuffling support work 5. As shown in FIG. 1, a plurality of plug-in type refilling jigs 6 are connected to each other by connecting steels 7 as shown in FIG. It is attached by inserting it into the upper end of each H steel 1 of the wall 2. The plug-in type refilling jig 6 has a structure in which, for example, a pair of grooved steels are assembled back to back, and the upper sides of these grooved steels are connected to each other. Insert the H steel 1 web No. 2 into the H steel 1 so that the web is inserted.
このように対向する山留め壁２間を盛り替え支保工５で
支えた状態で、１段目の山留め支保工４を解体する。In this way, the first mountain retaining structure 4 is disassembled while the space between the opposing mountain retaining walls 2 is supported by the refill supporting structure 5.
次に、第２図（Ｃ）に示すように、対向する山留め壁２
を盛り替え支保工５で支えて山留め壁２の変形を防止し
つつ、地下１階壁の地下コンクリート躯体８及び地下１
階床のコンクリート躯体９の打設工事を行う。Next, as shown in FIG. 2 (C), the opposing mountain retaining walls 2
Retaining supports 5 to prevent deformation of the mountain retaining wall 2, and also to prevent deformation of the earth retaining wall 2
Construction work of the concrete frame 9 on the floor is performed.
次に、第２図（Ｄ）に示すように、差込み式盛り替え治
具６をＨ鋼１から抜き、盛り替え支保工５を撤去する。Next, as shown in FIG. 2 (D), the plug-in type refill jig 6 is pulled out from the H steel 1, and the refill supporter 5 is removed.
（発明の効果） 以上説明したように本発明に係る山留め支保工の解体工
法は、１段目の山留め支保工の解体前に、対向する山留
め壁間を盛り替え支保工で支えているので、該１段目の
山留め支保工の解体後に山留め壁が変形するのを防止す
ることができる。特に本発明では、該盛り替え支保工
は、山留め壁のＨ鋼の上端に差込み式盛り替え治具で取
付けるので、盛り替え作業が容易となると共に盛り替え
支保工の再利用ができ、コストの低減を図ることができ
る。(Effect of the invention) As described above, in the dismantling method of the mountain retaining support according to the present invention, since the opposing mountain retaining walls are supported by the remounting supporting before the disassembling of the first stage mountain retaining support, It is possible to prevent the mountain retaining wall from being deformed after the first stage mountain retaining support work is disassembled. Particularly, in the present invention, since the refilling and supporting work is attached to the upper end of the H steel of the mountain retaining wall by the plug-in type refilling jig, the refilling work can be facilitated and the refilling and supporting work can be reused, which results in cost reduction. It can be reduced.
第１図は本発明に係る山留め支保工の解体工法で用いる
盛り替え支保工と差込み式盛り替え治具との一例の山留
め壁への取付け状態を示す斜視図、第２図（Ａ）〜
（Ｄ）は本発明に係る山留め支保工の解体工法の実施状
態を示す工程図、第３図及び第４図は従来の山留め支保
工の解体工法の実施状態を示す工程図である。 １…Ｈ鋼、２…山留め壁、３…地下コンクリート躯体、
４…山留め支保工、５…盛り替え支保工、６…差込み式
盛り替え治具、７…連結鋼、８…地下コンクリート躯
体、９…コンクリート躯体。FIG. 1 is a perspective view showing an example of a remounting support work and a plug-in type refilling jig used in a dismantling method of a mountain retaining support according to the present invention, which is attached to a mountain retaining wall, and FIG.
(D) is a process diagram showing an implementation state of the dismantling construction method of the mountain retaining support according to the present invention, and FIGS. 3 and 4 are process diagrams showing an implementation state of the disassembling construction method of the conventional mountain retaining support. 1 ... H steel, 2 ... Mountain retaining wall, 3 ... Underground concrete frame,
4 ... Mountain retaining support, 5 ... Remounting support, 6 ... Plug-in replacement jig, 7 ... Connection steel, 8 ... Underground concrete skeleton, 9 ... Concrete skeleton.
Claims (1)
保工を地下コンクリート躯体工事の進捗につれて解体す
る山留め支保工の解体工法において、対向する前記山留
め壁を構成する両側のＨ鋼間に、盛り替え支保工をその
両端の差込み式盛り替え治具を該両側のＨ鋼の上端に差
込むことにより先に取付けておき、該盛り替え支保工で
支えつつ１段目の前記山留め支保工を解体することを特
徴とする山留め支保工の解体工法。1. In a dismantling method of a mountain retaining support for disassembling mountain retaining supports supporting between opposing mountain retaining walls as the progress of underground concrete slab construction, between the H steels on both sides constituting the opposing mountain retaining walls, The remounting support work is attached in advance by inserting plug-in type refilling jigs on both ends thereof into the upper ends of the H steels on both sides, and the first-stage mountain retaining support work is supported while being supported by the refill support work. A dismantling method for mountain retaining supports, which is characterized by dismantling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9627789A JPH0663236B2 (en) | 1989-04-18 | 1989-04-18 | Dismantling construction method for mountain retaining support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9627789A JPH0663236B2 (en) | 1989-04-18 | 1989-04-18 | Dismantling construction method for mountain retaining support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02274916A JPH02274916A (en) | 1990-11-09 |
| JPH0663236B2 true JPH0663236B2 (en) | 1994-08-22 |
Family
ID=14160638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9627789A Expired - Lifetime JPH0663236B2 (en) | 1989-04-18 | 1989-04-18 | Dismantling construction method for mountain retaining support |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0663236B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250971A (en) * | 2013-06-26 | 2014-12-31 | 中国二十冶集团有限公司 | Closed removing method for basement enclosure supporting body |
-
1989
- 1989-04-18 JP JP9627789A patent/JPH0663236B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02274916A (en) | 1990-11-09 |
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