JP5395768B2 - Glue surface protection work that can secure the installation interval of the main reinforcing bars and cover of mortar and other hardened materials - Google Patents
Glue surface protection work that can secure the installation interval of the main reinforcing bars and cover of mortar and other hardened materials Download PDFInfo
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- JP5395768B2 JP5395768B2 JP2010200940A JP2010200940A JP5395768B2 JP 5395768 B2 JP5395768 B2 JP 5395768B2 JP 2010200940 A JP2010200940 A JP 2010200940A JP 2010200940 A JP2010200940 A JP 2010200940A JP 5395768 B2 JP5395768 B2 JP 5395768B2
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- stirrup
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- 230000003014 reinforcing effect Effects 0.000 title claims description 46
- 239000003292 glue Substances 0.000 title claims description 37
- 238000009434 installation Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 title claims description 16
- 239000004570 mortar (masonry) Substances 0.000 title claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 21
- 238000010276 construction Methods 0.000 claims description 20
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000009415 formwork Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Description
本発明は、斜面の崩壊防止等に利用するモルタル等硬化材吹き付けによるのり枠工において、鉄筋の設置位置を所定の間隔で確保し、スターラップと地面の間隔を適正に保持できるのり枠工法に関するものである。 The present invention relates to a glue frame construction method that can secure the installation positions of reinforcing bars at a predetermined interval and appropriately maintain the distance between the stirrup and the ground in the glue frame construction by spraying a hardener such as mortar used for preventing the collapse of slopes, etc. Is.
従来ののり枠工には、設置する主鉄筋が上面あるいは下面で４本以上になった場合、両端以外の主鉄筋の設置は、設置中に設置者が位置を測りながら設置する方法、または、経験による目測で設置する方法である（例えば、非特許文献１、２、３参照）。
また、のり枠工を地表面の不陸が大きい場所に設置する場合、アンカー材を地面に打ち込み、このアンカー材にのり枠工内のスターラップを取り付けることによりモルタル等硬化材のかぶりを確保しているものがある。(例えば、特許文献１参照)。
In the conventional glue frame construction, when the number of main reinforcing bars to be installed is 4 or more on the upper surface or the lower surface, the installation of main reinforcing bars other than both ends can be performed by the installer while measuring the position during installation, or It is a method of installing by eye measurement based on experience (for example, see Non-Patent Documents 1, 2, and 3).
In addition, when installing the glue frame work in a place where the ground surface is not flat, the anchor material is driven into the ground, and the stirrup in the glue frame work is attached to this anchor material to ensure the covering of the hardened material such as mortar. There is something that is. (For example, refer to Patent Document 1).
従来の施工方法でののり枠工の主鉄筋設置について図４で説明する（非特許文献２参照）。図４において、８はのり枠工の上部スターラップであり、これと対向側の下部スターラップ４で、現地作業により上部主鉄筋７と下部主鉄筋６を設置する。下部主鉄筋６の両端の下部主鉄筋６ａは下部スターラップ４により施工位置が決まるが、両端以外の下部主鉄筋６ｂの施工位置は現地で計測、または、目測により決定し設置している。
また、上部主鉄筋７の両端の上部主鉄筋７ａは上部スターラップ８により施工位置が決まるが、両端以外の上部主鉄筋７ｂの施工位置は現地で計測、または、目測により決定し設置している。
The main reinforcing bar installation of the girder work in the conventional construction method will be described with reference to FIG. 4 (see Non-Patent Document 2). In FIG. 4, 8 is the upper stirrup of the frame work, and this is the lower stirrup 4 on the opposite side, and the upper main reinforcing bar 7 and the lower main reinforcing bar 6 are installed by field work. The construction positions of the lower main reinforcing bars 6a at both ends of the lower main reinforcing bar 6 are determined by the lower stirrup 4, but the construction positions of the lower main reinforcing bars 6b other than the both ends are determined by measurement or installed on site.
Moreover, although the construction position of the upper main reinforcement 7a at both ends of the upper main reinforcement 7 is determined by the upper stirrup 8, the construction position of the upper main reinforcement 7b other than both ends is determined on site or determined by visual inspection. .
特許文献１の図１は、のり枠工の内の上部鉄筋４、下部鉄筋４′及びスターラップ５等から構成される鉄筋組立体６をアンカー材３に設置してかぶりを確保している。 In FIG. 1 of Patent Document 1, a rebar assembly 6 composed of an upper rebar 4, a lower rebar 4 ′, a stirrup 5, and the like in a glue frame is installed on the anchor material 3 to ensure the cover.
従来の技術では、例えば図４（非特許文献２参照）において、のり枠工に上部主鉄筋7と下部主鉄筋6を設置しようとする場合、両端の上部主鉄筋７ａと下部主鉄筋６ａは、施工位置をスターラップ４、８によって特定できたが、中央の上部主鉄筋７ｂ及び下部主鉄筋６ｂは、スターラップ４、８内での設置位置を特定できなかった。
さらに、上部主鉄筋７を上部スターラップ８に取り付ける場合は、上部スターラップ８を取り付ける前に一旦下部スターラップ４内に上部鉄筋７を置いた後、上部スターラップ８を設置し、その後、上部鉄筋７を持ち上げながら上部スターラップ８に結線していた。
また、のり枠工を設置する場合、下部スターラップ４から地面９までのモルタル等硬化材のかぶりを確保するためには、特許文献１の図１のアンカー材３を設置するなどの事前準備が必要であった。
In the prior art, for example, in FIG. 4 (see Non-Patent Document 2), when the upper main reinforcing bar 7 and the lower main reinforcing bar 6 are to be installed in the glue frame, the upper main reinforcing bar 7a and the lower main reinforcing bar 6a at both ends Although the construction position could be specified by the stirrups 4 and 8, the central upper main rebar 7b and the lower main rebar 6b could not specify the installation positions in the stirrups 4 and 8.
Furthermore, when attaching the upper main reinforcing bar 7 to the upper stirrup 8, before attaching the upper stirrup 8, first place the upper rebar 7 in the lower stirrup 4, and then install the upper stirrup 8. While lifting the rebar 7, it was connected to the upper stirrup 8.
Moreover, when installing a glue frame, in order to ensure the covering of hardened materials such as mortar from the lower stirrup 4 to the ground 9, advance preparations such as installing the anchor material 3 of FIG. It was necessary.
本発明は、従来の構造が有していた問題を解決しようとするものであり、のり枠工の内側に設置する上部主鉄筋と下部主鉄筋をそれぞれ所定の位置に設置するとともに、下部スターラップから地面までのモルタル等硬化材のかぶりを確保することを目的とするものである。 The present invention is intended to solve the problems of the conventional structure. The upper main reinforcing bar and the lower main reinforcing bar installed inside the glue frame work are respectively installed at predetermined positions, and the lower stirrup is provided. It is intended to ensure the covering of a hardening material such as mortar from the ground to the ground.
本発明は、上記従来の課題を解決するために提供するものであり、本発明の第１は、のり枠工の主鉄筋の設置間隔とモルタル等硬化材のかぶりを確保できるのり面保護工において、のり枠工に設置する下部主鉄筋を所定の間隔で設置するために、当該下部主鉄筋の設置位置に合わせて調整したカバースペーサーを下部スターラップに設置する主鉄筋径以上に延長することで下部主鉄筋を所定の位置で確保できるようにしたものである。 The present invention is provided in order to solve the above-described conventional problems. The first aspect of the present invention is a slope protection work that can secure the installation interval of the main reinforcing bars and the covering of the hardened material such as mortar. In order to install the lower main reinforcement to be installed in the glue frame work at a predetermined interval, the cover spacer adjusted according to the installation position of the lower main reinforcement is extended beyond the main reinforcement diameter installed in the lower stirrup The lower main reinforcing bar can be secured at a predetermined position.
本発明の第２は、のり枠工の主鉄筋の設置間隔とモルタル等硬化材のかぶりを確保できるのり面保護工において、のり枠工に設置する上部主鉄筋を所定の間隔で設置するために、主鉄筋の設置間隔に合わせて調整したＬ字型ネットコネクターを下部スターラップに所定位置の左右に取り付けることより上部主鉄筋を所定の位置に設置できるようにしたものである。 In the second aspect of the present invention, in order to install the upper main reinforcing bars to be installed in the glue frame work at predetermined intervals in the slope surface protection work that can secure the covering interval of the main reinforcing bars of the glue frame work and the covering of the hardening material such as mortar. The upper main reinforcing bar can be installed at a predetermined position by attaching L-shaped net connectors adjusted in accordance with the installation interval of the main reinforcing bar to the left and right of the predetermined position on the lower stirrup.
本発明の第３は、のり枠工の主鉄筋の設置間隔とモルタル等硬化材のかぶりを確保できるのり面保護工において、のり枠工の両側の金網状の型枠に所定の間隔で配置したＵ字形の上部スターラップとＵ字形の下部スターラップのうち、当該下部スターラップの下側にカバースペーサーを取り付けることにより、当該下部スターラップから地面までのモルタル等硬化材のかぶりを確保できるようにしたものである。 In the third aspect of the present invention, in the slope surface protection work that can secure the installation interval of the main reinforcing bars of the glue frame work and the covering of the hardening material such as mortar, they are arranged at predetermined intervals on the metal mesh-like molds on both sides of the glue work. By attaching a cover spacer to the lower side of the lower stirrup of the U-shaped upper stirrup and U-shaped lower stirrup, it is possible to secure the covering of the hardened material such as mortar from the lower stirrup to the ground. It is a thing.
本発明は上記の構造であるから、のり枠工内に設置する下部主鉄筋は下部スターラップにあらかじめ下部主鉄筋の所定の位置に加工したカバースペーサーを設置しておくことで、現地で下部主鉄筋を設置するときにカバースパーサーの上端部に合わせて設置することで所定の位置を確実に確保できる。 Since the present invention has the above-described structure, the lower main reinforcing bar to be installed in the girder frame is installed on the lower stirrup beforehand by installing a cover spacer that has been processed at a predetermined position of the lower main reinforcing bar in advance. A predetermined position can be reliably ensured by installing the reinforcing bars according to the upper end of the cover spars.
また、のり枠工に設置する上部主鉄筋はカバースペーサーを下部スターラップの上端部にあらかじめ所定の長さに加工したＬ字型ネットコネクターを設置しておくことで、現地で上部主鉄筋を設置する場合、Ｌ字型ネットコネクターに合わせて設置することで所定の位置が確実に確保できる。 In addition, the upper main reinforcing bar to be installed in the glue frame is installed on the site by installing an L-shaped net connector with a cover spacer processed in advance to the upper end of the lower stirrup. In this case, the predetermined position can be surely secured by installing according to the L-shaped net connector.
さらに、下部スターラップに取り付ける下部スターラップから地面までのモルタル等硬化材のかぶりを確保できるような形状に加工して取り付けることで、不陸のある施工箇所の地面でも、あるいは上部主鉄筋や下部主鉄筋を設置したため過重量でのり枠が変形した場合でも、カバースペーサーを設置しておくことでかぶりを確保することが可能となる。 Furthermore, by processing and mounting in a shape that can secure the covering of the hardened material such as mortar from the lower stirrup to the lower stirrup to the ground, even on the ground of the construction site where there is unevenness, or the upper main reinforcing bar and the lower Even when the glue frame is deformed due to excessive weight because the main rebar is installed, it is possible to secure the cover by installing the cover spacer.
本発明の実施例を図面に即して説明する。図１において、１はのり枠の金網状型枠、２はＬ字型ネットコネクター、３は下部ネットコネクターで下部スターラップ４を支えている。５はカバースペーサーで下部スターラップ４に取り付けている。６（６a・６b）は下部主鉄筋であり、その両端の下部主鉄筋６aは下部スターラップ４の両端に取り付け、中央部の下部主鉄筋６bはカバースペーサー５の位置で取り付け、下部主鉄筋６を下部スターラップ４にそれぞれ結線する。次に、上部主鉄筋７をＬ字型ネットコネクター２上に配置した後、上部スターラップ８を下部スターラップ４に沿って配置し、上部主鉄筋７（７a・７b）を上部スターラップ８にそれぞれ結線する。 Embodiments of the present invention will be described with reference to the drawings. In Figure 1, 1 is a wire mesh-like formwork glue frame, 2 L-shaped net connector, 3 bears the lower portion stirrup 4 in the lower net connector. A cover spacer 5 is attached to the lower stirrup 4. 6 (6a, 6b) are lower main reinforcing bars, the lower main reinforcing bars 6a at both ends thereof are attached to both ends of the lower stirrup 4, the lower main reinforcing bar 6b at the center is attached at the position of the cover spacer 5, and the lower main reinforcing bar 6 is attached. Are connected to the lower stirrup 4 respectively. Next, after the upper main reinforcing bar 7 is arranged on the L -shaped net connector 2 , the upper stirrup 8 is arranged along the lower stirrup 4, and the upper main reinforcing bar 7 (7 a, 7 b) is placed on the upper stirrup 8. Connect each one.
図２は、工場で加工されたのり枠工部材を現地に設置した状態のものである。すでに、のり枠工部材として金網状型枠１にＬ字型ネットコネクター２を介して下部スターラップ４が取り付けられ、下部スターラップ４にカバースペーサー５も取り付けられている。 FIG. 2 shows a state in which a glue frame member processed at a factory is installed on site. Already, the lower star wrap 4 is attached to the wire net form 1 as the glue frame work member via the L-shaped net connector 2, and the cover spacer 5 is also attached to the lower star wrap 4.
図１は、図２の工場加工したのり枠工部材に下部主鉄筋６と上部主鉄筋７を取り付け、さらに上部スターラップ８を設置したもので、のり枠工部材の設置完了図となる。この後、のり枠工部材内にモルタル等硬化材を吹き付けてのり枠工を斜面の保護工として完成させる。 FIG. 1 is a diagram of the installation completion of the glue frame member, in which the lower main reinforcing bar 6 and the upper main reinforcing bar 7 are attached to the factory-finished glue frame member of FIG. 2 and the upper stirrup 8 is further installed. Thereafter, a curing material such as mortar is sprayed into the glue frame member to complete the glue frame as a slope protection.
「発明に係る設置工程」
本発明に係るカバースペーサー５とＬ字型ネットコネクター２を用いたのり枠工部材の工場での組み立て工程は次のとおりである。
（１） のり枠工部材の組み立て工場にて、両端の金網状型枠１内にＵ字型の下部スターラップ４を金網状型枠１の所定位置に設置してあるＬ字型ネットコネクター２と下部ネットコネクター３に取り付ける。
（２） 取り付けられた下部スターラップ４に下部主鉄筋６bの設置位置が合うように加工したカバースぺーサー５を取り付ける。このとき、カバースペーサー５を下部主鉄筋径程度の長さを下部スターラップ５から突出させて取り付ける。
（３） 取り付けが完了したら、この状態で、のり枠部材の中央を畳むように、コンパクトにパッケージして現地に搬入する。
"Installation process according to the invention"
The assembly process in the factory of the glue frame construction member using the cover spacer 5 and the L-shaped net connector 2 according to the present invention is as follows.
(1) An L-shaped net connector 2 in which U-shaped lower stirrups 4 are installed at predetermined positions in the wire mesh formwork 1 in the wire mesh formwork 1 at both ends at an assembly factory for glue frame work members. And attach to the lower net connector 3.
(2) The cover spacer 5 processed so that the installation position of the lower main reinforcing bar 6b matches the attached lower stirrup 4 is attached. At this time, the cover spacer 5 is attached so as to protrude from the lower stirrup 5 by a length about the diameter of the lower main reinforcing bar.
(3) When the installation is complete, in this state, pack it in a compact manner so that the center of the glue frame member is folded, and carry it to the site.
現地でののり枠工部材の設置工程は次の通りである。
（１） 工場より受け入れたのり枠部材を現地で再度広げて地面に設置する。
（２） 下部主鉄筋６（６a・６b）を下部スターラップ４およびカバースペーサー５に合わせて位置を確保し、それぞれを結線する。
（３） 上部主鉄筋７（７ａ・７ｂ）をＬ字型ネットコネクター２の上に載せ所定の位置を確保した上で上部スターラップ８を下部スターラップ４に沿って設置する。
（４） Ｌ字型ネットコネクター２に載っている上部主鉄筋７（７a・７b）を上部スターラップ８にそれぞれを結線する。
（５） このとき、カバースペーサー５により下部スターラップ４と設置地面の間隔は、所定のかぶりとなるカバースペーサー５の高さｈで保持している。
The installation process of glue frame members at the site is as follows.
(1) Spread the glue frame member received from the factory on site and install it on the ground.
(2) Align the lower main reinforcing bars 6 (6a, 6b) with the lower stirrup 4 and the cover spacer 5 to secure the positions and connect them.
(3) The upper main wrap 7 (7a, 7b) is placed on the L-shaped net connector 2 and a predetermined position is secured, and then the upper stirrup 8 is installed along the lower stirrup 4.
(4) The upper main reinforcing bars 7 (7a, 7b) mounted on the L-shaped net connector 2 are connected to the upper stirrup 8 respectively.
(5) At this time, the space between the lower stirrup 4 and the installation ground is held by the cover spacer 5 at the height h of the cover spacer 5 that becomes a predetermined cover.
「本発明装置による作用」
本発明による具体的な作用は次のとおりである。
（１） 下部スターラップ４に取り付けているカバースペーサー５により下部主鉄筋６（６a・６b）の所定の位置を確保することが容易に可能となり、品質の向上と施工性の向上が達成できる。
（２） Ｌ字型ネットコネクター２により上部主鉄筋７（７ａ・７ｂ）の所定の位置を確保することが容易に可能となり、また、上部スターラップ８に結線するときも上部主鉄筋７（７a・７b）を持ち上げることなく結線できるため、品質の向上と施工性の向上が達成できる。
（３） 工場加工であらかじめカバースペーサー５を取り付けていることにより下部スターラップ４と設置地面９の間隔となるかぶりをカバースペーサー５の高さｈとして所定の間隔で確保することが容易に可能となり、品質の向上と施工性の向上が達成できる。
"Operation by the device of the present invention"
Specific actions according to the present invention are as follows.
(1) The cover spacer 5 attached to the lower stirrup 4 can easily secure a predetermined position of the lower main reinforcing bar 6 (6a, 6b), thereby improving quality and workability.
(2) The L-shaped net connector 2 makes it possible to easily secure a predetermined position of the upper main reinforcing bar 7 (7a, 7b), and when connecting to the upper stirrup 8, the upper main reinforcing bar 7 (7a・ Since it can be connected without lifting 7b), improvement in quality and improvement in workability can be achieved.
(3) By attaching the cover spacer 5 in advance at the factory, it becomes possible to easily secure the cover that becomes the distance between the lower stirrup 4 and the installation ground 9 as the height h of the cover spacer 5 at a predetermined interval. Improved quality and workability can be achieved.
１……金網状型枠
２……Ｌ字型ネットコネクター
３……下部ネットコネクター
３′……上部ネットコネクター
４……下部スターラップ
５……カバースペーサー
６（６a・６b）……下部主鉄筋
７（７a・７b）……上部主鉄筋
８……上部スターラップ
９……地面
1 …… Wire mesh form 2 …… L-shaped net connector 3 …… Lower net connector 3 ′ …… Upper net connector 4 …… Lower stirrup 5 …… Cover spacer 6 (6a ・ 6b) …… Lower main rebar 7 (7a, 7b) …… Upper main reinforcement 8 …… Upper stirrup 9 …… The ground
Claims (1)
当該下部スターラップ(4)の下側にカバースペーサー(5)を取付けると共に、下部スターラップ(4)に設置する主鉄筋の径以上に延長することで下部主鉄筋(6)を所定の位置で確保できるように構成し、
Ｌ字型ネットコネクター(2)と下部コネクター(3)で下部スターラップ５を型枠(1) に支持してのり枠工部材、これを工場で組み立て加工し、
当該のり枠工部材を現地の地面に設置して、下部主鉄筋(6)「(６a).（6ｂ)」を下部スターラップ(4)及びカバースペーサー(5)に合わせて位置を確保してそれぞれ取り付け、
また、上部主鉄筋(7)「(7a).（7ｂ)」をＬ字型ネットコネクター(2)の上に載せて所定の位置を確保し、
上部スターラップ(8)を当該上部主鉄筋(7)「(7a).（7ｂ)」を被せるように下部スターラップ(4)に沿って設置するように構成した
ことを特徴とするのり枠工の主鉄筋の設置間隔とモルタル等硬化材のかぶりを確保できるのり面保護工。 Of the U-shaped upper stirrup (8) and lower stirrup (4) arranged at predetermined intervals on the wire mesh formwork (1) on both sides of the glue frame work,
Attach the cover spacer (5) to the lower side of the lower stirrup (4), and extend the lower main rebar (6) in place by extending it beyond the diameter of the main rebar installed on the lower stirrup (4). Configured to ensure,
The lower stirrup 5 is supported on the formwork (1) with the L-shaped net connector (2) and the lower connector (3).
Install the frame frame member on the ground, and position the lower main reinforcing bar (6) “(6a). (6b)” to the lower stirrup (4) and cover spacer (5). Each installed,
Also, place the upper main rebar (7) “(7a). (7b)” on the L-shaped net connector (2) to secure a predetermined position,
Glue frame construction characterized in that the upper stirrup (8) is installed along the lower stirrup (4) so as to cover the upper main reinforcement (7) "(7a). (7b)" This is a slope protection work that can secure the installation interval of the main reinforcing bars and the covering of hardened materials such as mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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