JPH07292999A - Method for repairing corroded steel-pipe pole pedestal - Google Patents
Method for repairing corroded steel-pipe pole pedestalInfo
- Publication number
- JPH07292999A JPH07292999A JP8961394A JP8961394A JPH07292999A JP H07292999 A JPH07292999 A JP H07292999A JP 8961394 A JP8961394 A JP 8961394A JP 8961394 A JP8961394 A JP 8961394A JP H07292999 A JPH07292999 A JP H07292999A
- Authority
- JP
- Japan
- Prior art keywords
- column base
- steel pipe
- reinforcing material
- pedestal
- rod
- 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
- Working Measures On Existing Buildindgs (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、マンシヨン等
集合住宅の屋外部に設置されている鋼管製手摺柱脚部
や、屋外体育施設、遊具施設の鋼管製柱脚部の補修方法
に係り、日光および風雨を受けて腐蝕し欠損あるいは欠
損化した鋼管製柱脚部の補修方法にに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a steel pipe handrail column leg installed in an outdoor part of an apartment house such as a mansion, and a method of repairing a steel pipe column leg of an outdoor physical education facility or a playground facility. The present invention relates to a method for repairing a steel pipe column base that has been corroded by sunlight and wind and rain, and has been damaged or has become defective.
【０００２】[0002]
【従来の技術】例えば、マンシヨン等の集合住宅あるい
は公共建築物施設等の屋外の手摺としては、通常鋼鉄製
の素材が多く用いられている。しかしこの鋼鉄製素材の
手摺は長年の風雨により錆が発生し、腐蝕が起こって欠
損化し、その腐蝕が内部にまで到達すれば、文字通り欠
損部が生ずる。この柱脚部の欠損化あるいは欠損が生ず
る部位としては、雨水が溜まり易い最下部、即ち図１で
示す笠木部の上部近傍位置が主体である。このような欠
損部を有する手摺は、当然のことながら人命の安全上放
置されることがあってはならず、その欠損部を有する柱
脚部個々についての出来るだけ早急な補修が望まれる。
ところで、その補修方法としては、従来、その作業が簡
単容易でかつ確実な方法がなく、手摺自体を新規なもの
に取り替える方法が主として行われている。しかし、こ
の取替作業はベランダ部の大がかりな作業となり、工期
的に長期間を要するとともに、その工費も多額を要する
こととなる。また全体を取替える作業となるので、部分
的に補修を要する柱脚部があっても、全体の補修時期ま
で放置することとなり、安全上望ましいものではない。2. Description of the Related Art For example, a steel material is often used for an outdoor handrail such as an apartment house such as a mansion or a public building facility. However, the handrail made of this steel material is rusted by wind and rain for many years, corrodes and becomes defective, and if the corrosion reaches the inside, a defective portion literally occurs. The main part of the column base is the position at which the rainwater is accumulated or the region where the damage occurs, that is, the lowermost portion where rainwater easily accumulates, that is, the position near the upper portion of the head part shown in FIG. Naturally, the handrail having such a defect must not be left unattended for the safety of human life, and it is desired to repair each column base having the defect as soon as possible.
By the way, as a repairing method, there is no conventional method that is easy and easy and reliable, and a method of replacing the handrail itself with a new one is mainly used. However, this replacement work is a large-scale work on the veranda part, which requires a long construction period and a large construction cost. Further, since the whole work is replaced, even if there is a column base that requires partial repair, it will be left until the entire repair period, which is not desirable for safety.
【０００３】[0003]
【発明が解決しようとする課題】従って本発明は、欠損
部を有する柱脚部の手摺自体を新規なものに取り替える
のでなく、欠損部あるいは欠損化した部位を有する該柱
脚部個々を工期を要することなく簡単容易な作業で確実
に補修する方法を創出せんとするものである。また同様
に、本発明は、屋外遊具施設の腐蝕して欠損した、ある
いは欠損化した鋼管製柱脚部個々を工期を要することな
く簡単容易な作業で確実に補修する方法を創出せんとす
るものである。SUMMARY OF THE INVENTION Therefore, the present invention does not replace the handrail itself of the column base portion having the defective portion with a new one, but rather constructs the individual column base portions having the defective portion or the defective portion. It is intended to create a method for surely repairing with simple and easy work without needing to do so. Further, similarly, the present invention is to create a method for reliably repairing a corroded and missing steel pipe column base portion of an outdoor playground facility by a simple and easy work without requiring a construction period. Is.
【０００４】[0004]
【課題を解決するための手段】本発明者らは上記の課題
につき多数の実験の結果、上記の課題は以下の補修方法
によってその目的が達成されることを見出だした。即
ち、本発明は、鋼管製柱脚部の欠損した部位上下にわた
る柱脚部内に伸長状態の長尺棒状補強材（以下補強材と
略記する）を配した硬化性組成物（以下硬化剤と略記す
る）を充填硬化させ該欠損部位を補修する方法であっ
て、該柱脚部の欠損部位より高い位置に前記補強材と硬
化剤の挿入口を開口し、該挿入口より該補強材と硬化剤
とを挿入し、該補強材を内包した状態で該硬化剤を硬化
させることを特徴とする鋼管製柱脚部の補修方法であ
る。As a result of numerous experiments on the above problems, the present inventors have found that the above problems can be achieved by the following repair methods. That is, the present invention is a curable composition (hereinafter abbreviated as a curing agent) in which an elongated long rod-shaped reinforcing material (hereinafter abbreviated as a reinforcing material) is arranged in a column base extending above and below a defective portion of a steel pipe column base. (2) is filled and hardened to repair the defective portion, wherein the reinforcing material and the hardening agent are opened at a position higher than the defective portion of the column base, and the reinforcing material and the hardening material are hardened from the insertion opening. A method of repairing a column base made of steel pipe, characterized in that a hardening agent is hardened in a state that the reinforcing agent is included therein.
【０００５】本発明での対象は、錆が発生し既に穴が開
いた欠損部を有する柱脚部ばかりでなく、穴が開かない
までも保護柵あるいは施設柱脚として不適当となった欠
損化した柱脚部の補修をもその対象とすることは無論で
あるが、本明細書では言葉の繁雑さをさけるために、既
に欠損部を有する柱脚部並びに欠損化した部位を有する
柱脚部を、単に、欠損部を有する柱脚部と記載してい
る。The object of the present invention is not only the column base having a defective portion which has already been pierced by rusting, but also the defective column which is not suitable as a protective fence or a facility column pier even before the hole is formed. It is needless to say that the repair of a damaged column base is also the subject, but in this specification, in order to avoid complicated words, a column base already having a defect and a column base having a defective region are included. Is simply described as a column base having a defect.
【０００６】[0006]
【作用】柱脚部全体の取り替えの為に該柱脚部を設置し
固定しているベランダ部等の設置部を部分的に破砕し切
り開いて基礎アンカーボルトの設置からやり直す従来の
取り替え方法（作業）対して、本方法は該柱脚部を設置
し固定しているベランダ等設置部の基礎部での作業が不
要で、欠損部位を有する柱脚部のみでの補強材および硬
化剤の挿入作業でよく、その工期は従来法に比し１／１
５ないし１／２０に短縮できるだけでなく、工期短縮に
よる住民のプライバシー確保に大いに役立つものであ
り、またその補修費用も１／５ないし１／７に低減でき
る。また従来法での基礎部の破砕切り開き作業によるコ
ンクリート破砕物の落下も生ぜず、欠損部位を有する柱
脚部での穴明け、該穴への補強材および硬化剤の挿入作
業で、飛散落下が基本的にない方法であるため周囲並び
に階下への安全性が高い。また屋外体育施設、遊具施設
の柱脚部も個々に補修でき、補修工期およびコストを低
減できる。[Operation] A conventional replacement method (work to re-install the foundation anchor bolts) by partially crushing and cutting open the installation part such as the balcony part where the column base is installed and fixed to replace the entire column base ) On the other hand, this method does not require the work of the foundation of the installation part such as the veranda where the column base is installed and fixed, and the work of inserting the reinforcing material and the curing agent only in the column base having the defective portion. The construction period is 1/1 compared to the conventional method.
Not only can it be shortened to 5 to 1/20, it will also be very useful for ensuring the privacy of residents by shortening the construction period, and the repair cost can also be reduced to 1/5 to 1/7. In addition, the conventional method does not cause the concrete crushed material to fall due to the crushing and opening work of the foundation part, and it is possible to scatter and drop by drilling holes in the column bases that have a defect site and inserting reinforcing material and hardening agent into the holes. Since it is basically a non-existent method, it is highly safe to the surrounding area and downstairs. In addition, the column bases of outdoor physical education facilities and playground facilities can be individually repaired, and the repair period and cost can be reduced.
【０００７】以下本発明を図面を用いてより詳細に説明
する。図１はベランダ部に設置された手摺柱脚部の設置
部を示す模式断面図であり、符号１は室内、符号２はベ
ランダ、符号３は該ベランダ２に設置された手摺の鉄製
鋼管柱脚部を示す。図面に示すように、ベランダ２に
は、ベースプレート４が該ベランダ２中に埋め込まれた
アンカーボルト５を介して固定され、該ベースプレート
４に手摺の各柱脚部３の下端部が結合されており、さら
に該結合された柱脚部群はその下端部でその周囲を取り
囲む笠木体６でベランダ表面から通常１００ｍｍ前後上
まで押さえられて構成されている。そして、風雨により
腐蝕して柱脚部３に欠損部が生ずる箇所は、通常、該柱
脚部３が笠木体６から表面に露出する近隣部分である。The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an installation portion of a handrail column base installed on a veranda part, where reference numeral 1 is indoors, reference numeral 2 is a veranda, and reference numeral 3 is an iron steel pipe pillar base of a handrail installed on the veranda 2. Indicates a part. As shown in the drawing, a base plate 4 is fixed to the veranda 2 via anchor bolts 5 embedded in the veranda 2, and the lower ends of the column bases 3 of the handrail are connected to the base plate 4. Further, the combined column base portion is configured such that the lower end portion thereof is normally pressed down by about 100 mm from the surface of the veranda by a head 6 surrounding the periphery. The location where the column base portion 3 is corroded by wind and rain to cause a defect is usually a neighboring portion where the column base portion 3 is exposed from the head 6 to the surface.
【０００８】ところで、従来この欠損部を有する柱脚部
３の補修は、前記の如く手摺（柱脚部）全体の新規な取
り替えであり、それにはベランダ２を破砕し基礎アンカ
ーボルト５の再設置から始めなければならない作業であ
り、これには当然のことながら、ベランダ内だけでの作
業は行えず、足場作業、家屋のベランダ側表面の被
覆作業、ベランダの破砕、剥離作業、破砕、剥離物
の撤去作業等を要し、新規手摺を設置した後にも、ベ
ランダの該設置部分と非設置表面部分との表面合わせの
為の左官作業、これら工事後の足場の撤去作業等が少
なくとも必要であり、このような工事作業は工期的に
も、コスト的にも、さらにまた安全性の面からも種々問
題を有していたのである。By the way, the conventional repair of the column base portion 3 having this defective portion is a new replacement of the whole handrail (column base portion) as described above, and the veranda 2 is crushed and the foundation anchor bolt 5 is re-installed. It is a work that must be started from this, of course, it is not possible to work only on the balcony, scaffolding work, covering the balcony side surface of the house, crushing the veranda, peeling work, crushing, peeling Even after installing the new handrail, it is necessary to at least perform plastering work to align the installed part of the balcony with the non-installed surface part, and the scaffolding removal work after these works. However, such construction work has various problems in terms of construction period, cost, and safety.
【０００９】図２は、本発明方法で補修した後の補修さ
れた柱脚部３の内部を模式的に示した該設置部を示す模
式断面図である。本発明は、前記の如く、風雨により腐
蝕して柱脚部３に欠損部が生ずる箇所は、通常、該柱脚
部３が笠木体６から表面に露出する該笠木体６の上部近
辺に位置する箇所であることに鑑みて成されたものであ
る。即ち、本発明は、欠損部７を有する柱脚部３の該欠
損部７を中心にその上下にわたって補強体８を該柱脚部
内に固定出来れば、該欠損部７での柱脚部３に対する曲
げ応力に対して抵抗することが出来るという考えに基づ
いている。FIG. 2 is a schematic cross-sectional view showing the installation portion schematically showing the inside of the column base portion 3 repaired by the method of the present invention. According to the present invention, as described above, the location where the column base portion 3 is damaged by wind and rain to cause a defect is usually located near the upper portion of the head wooden body 6 where the column base portion 3 is exposed from the surface of the wooden body 6. It was made in view of the fact that it is a place to do. That is, according to the present invention, if the reinforcing body 8 can be fixed in the column base portion of the column base portion 3 having the defect portion 7 vertically around the defect portion 7, the column base portion 3 at the defect portion 7 can be fixed. It is based on the idea that it can resist bending stress.
【００１０】本発明の補修方法においては、図２で示さ
れるように、柱脚部３の欠損部７を中心にその上下にわ
たって補強体８を配するのであるが、該補強体８とし
て、硬化剤９を単に配するばかりでなく、該硬化剤９内
に伸長状態の補強材１０を分散状態で配置させて該硬化
剤９と結合させ、その伸長状態の補強材１０を配した硬
化剤９を、柱脚部３の欠損部７を中心にその上下にわた
って該柱脚部内で該柱脚部と結合状態で存在させること
によって曲げ応力に対する強力な抵抗体となさしめるも
のである。In the repairing method of the present invention, as shown in FIG. 2, the reinforcing member 8 is arranged above and below the defective portion 7 of the column base 3 as a center. In addition to simply disposing the agent 9, a stiffening material 10 in an expanded state is disposed in the stiffening agent 9 in a dispersed state so as to be bonded to the hardening agent 9, and the stiffening material 9 in which the stiffening material 10 in the stretched state is arranged. Is made to exist as a strong resistance against bending stress by allowing the column base 3 to exist above and below the column base 3 in a combined state with the column base above and below it.
【００１１】伸長状態の補強材１０を分散内包した硬化
剤９の曲げ強度を見るために、図３の断面図で示される
ように、伸長した補強材１０の１０〜４０本を分散状態
で内包して硬化した硬化剤９からなる硬化棒状物（補強
体）を複数個つくり、この補強体につき、下記に示す曲
げ強度のモデル試験を行った。モデル試験に用いた補強
材１０は、ポリビニルアルコール繊維（以下ＰＶＡ繊維
と略記する）の主筋材７２００デニール８本の周りに、
同じくＰＶＡ繊維７２００デニール２本を斜交巻きしエ
ポキシ樹脂を含浸、硬化させた直径３ｍｍ、長さ１６０
ｍｍの伸長状態のロツド状物で、その１本のロツド状物
の引張強度は８２ｋｇ／ｍｍ2、伸度は５．２％、ヤン
グ率は２６５０ｋｇ／ｍｍ2である。また硬化剤９は興
和化成製“ポリモルタル”（エポキシ系樹脂を主体とし
た樹脂に硬化剤を加えたもので、樹脂と硬化剤は３：
１）を使用した。両者を成形型枠内に挿入充填し、３日
間放置硬化させ、その後該型枠から取り出した。In order to check the bending strength of the curing agent 9 in which the reinforcing material 10 in a stretched state is dispersed and included, as shown in the cross-sectional view of FIG. 3, 10 to 40 stretched reinforcing materials 10 are included in a dispersed state. A plurality of cured rod-shaped materials (reinforcing bodies) made of the hardened curing agent 9 were prepared, and the bending strength was subjected to a model test shown below. The reinforcing material 10 used in the model test was composed of 8 main denier 7200 denier polyvinyl alcohol fibers (hereinafter abbreviated as PVA fibers).
Similarly, two 7200 denier PVA fibers were obliquely wound, impregnated with epoxy resin and cured, and the diameter was 3 mm and the length was 160.
The rod-shaped material in a stretched state of mm has a tensile strength of 82 kg / mm 2 , elongation of 5.2%, and Young's modulus of 2650 kg / mm 2 . The curing agent 9 is "polymortar" manufactured by Kowa Kasei (a resin mainly composed of an epoxy resin and a curing agent added, and the resin and the curing agent are 3:
1) was used. Both were inserted and filled in a molding frame, left to cure for 3 days, and then taken out from the frame.
【００１２】前記で得られた補強体は、いずれもその直
径３８．１ｍｍであり、その硬化棒状物の２点、即ち、
１３０ｍｍ長さの２点を、該棒状物と同じ円弧を有する
アダプターで水平支持し、その棒状物中心点へ荷重をか
け、荷重に対するタワミを測定した。この測定は島津社
製オートグラフ（ＨＳ＝１．０ｍ／ｍｉｎ）を用いた。
その曲げ−タワミ曲線を図４に示す。なお、一般的な手
摺に用いられている構造用鋼管の外径は４２．７ｍｍ、
内径は３８．１ｍｍであり、上記硬化棒状物の直径は、
この鋼管の内径に合わせたものである。図４で示される
如く繊維補強材の入らない樹脂のみの硬化棒状物および
該補強材１０本を配置したものの曲げ応力は不満足では
あるが、補強材を２０本以上配置したものとなると、そ
の曲げ応力が十分に高いものとなることがわかる。Each of the reinforcing bodies obtained above had a diameter of 38.1 mm, and two points of the cured rod-shaped material, namely,
Two points having a length of 130 mm were horizontally supported by an adapter having the same arc as that of the rod-shaped article, a load was applied to the center point of the rod-shaped article, and the deflection against the load was measured. This measurement used an autograph (HS = 1.0 m / min) manufactured by Shimadzu.
The bending-deflection curve is shown in FIG. The outer diameter of the structural steel pipe used for general handrails is 42.7 mm,
The inner diameter is 38.1 mm, and the diameter of the above-mentioned cured rod is
It is adapted to the inner diameter of this steel pipe. As shown in FIG. 4, the bending stress of the cured rod-shaped article containing only the resin without the fiber reinforcement and the ten reinforcements is unsatisfactory, but when 20 or more reinforcements are arranged, the bending stress is increased. It can be seen that the stress becomes sufficiently high.
【００１３】従って本発明は、前記の如く、上記補強さ
れた硬化棒状物の特性を欠損部を有する鋼管製柱脚部の
該欠損部の位置に補強すればよい、との考えに基づき、
そのために、補強された硬化棒状物をいかにして該欠損
部の内部位置に構成させるかを検討し、本発明に至った
ものである。即ち、本発明は、伸長した状態の補強材を
分散状態で内包配置した硬化性組成物からなる硬化棒状
体を欠損部を有する柱脚部内に形成することによって、
該柱脚部は、その欠損部に曲げ荷重がかかっても、その
荷重に充分に耐えることを可能とするものであり、その
課題を、簡単かつ容易な作業でもって解決するところに
ある。Therefore, according to the present invention, as described above, the characteristics of the reinforced hardened rod-like material may be reinforced at the position of the defective portion of the steel pipe column base portion having the defective portion.
To this end, the inventors have studied how to form a reinforced hardened rod at the internal position of the defective portion, and arrived at the present invention. That is, the present invention, by forming a hardened rod-shaped body made of a curable composition in which the reinforcing material in the stretched state is disposed in a dispersed state, in a column base portion having a defect portion,
Even if a bending load is applied to the defective portion, the column base portion can sufficiently bear the load, and the problem is to be solved by a simple and easy operation.
【００１４】図５は、本発明方法の施工方法を説明する
ための柱脚部３設置部の断面図である。同図において、
柱脚部３の欠損部７は笠木体６のすぐ上位置に対応する
部位である。この柱脚部３の欠損補修方法において、本
発明のそれは、まず欠損した柱脚部３の該欠損部７の上
方に、ドリル等で、後に挿入する補強材１０および／あ
るいは硬化剤９の挿入のための挿入口１１、１２を開口
する。この挿入口１１、１２の位置は、柱脚３の欠損部
７を中心にしてその上下各方向に少なくとも１０ｃｍ程
度の補強材１０および硬化剤９を装填しなければならな
いことを考慮し、該欠損部７の上方１０ｃｍ以上の部位
に設ければよい。FIG. 5 is a sectional view of the column base 3 installation portion for explaining the construction method of the method of the present invention. In the figure,
The missing portion 7 of the column base 3 is a portion corresponding to a position immediately above the headstock body 6. In this method of repairing a defect of the column base 3, first of all, according to the present invention, a reinforcing material 10 and / or a hardening agent 9 to be inserted later is inserted by a drill or the like above the defective part 7 of the column base 3 which is missing. The insertion ports 11 and 12 are opened. Considering that the positions of the insertion ports 11 and 12 must be loaded with the reinforcing material 10 and the hardening agent 9 of at least about 10 cm in the respective vertical directions centering on the defective portion 7 of the column base 3, the defective portions are considered. It may be provided at a position 10 cm or more above the portion 7.
【００１５】またこの開口部１１、１２の開口は、補強
材１０および硬化剤９の挿入のために、およそ６〜１０
ｍｍ直径の穴をドリル等で明ければよい。また図５の場
合、挿入口は補強材１０用の挿入口１１と、硬化剤９用
の挿入口１２を別々に設けた例を示しているが、この挿
入口は両者挿入のための共通の、即ち、１つの挿入口で
あってもよい。The openings of the openings 11 and 12 are about 6 to 10 for the insertion of the reinforcing material 10 and the hardening agent 9.
It suffices to drill a hole having a diameter of mm with a drill or the like. In addition, in the case of FIG. 5, the insertion port 11 for the reinforcing material 10 and the insertion port 12 for the curing agent 9 are separately provided, but this insertion port is common for both insertions. That is, it may be one insertion port.
【００１６】挿入する硬化剤９は、常温硬化型の、例え
ばエポキシ系樹脂を主体とする硬化樹脂であっても、ま
たビニルエステル樹脂、不飽和ポリエステル樹脂等の熱
硬化性樹脂及びポリエチレン、ポリプロピレン等の熱可
塑性樹脂であってもよく、また通常のセメント、モルタ
ルで代表される水硬性物質であってもよいが、伸長状態
での補強材１０を配置した条件で、対象とする部位の欠
損部のない鉄製鋼管と同等以上の応力を示すことが出来
るものであればよい。The curing agent 9 to be inserted may be a room temperature curing type curing resin mainly composed of, for example, an epoxy resin, or a thermosetting resin such as a vinyl ester resin or an unsaturated polyester resin, polyethylene, polypropylene or the like. Although it may be a thermoplastic resin, or may be a hydraulic material represented by ordinary cement or mortar, the defective portion of the target portion is provided under the condition that the reinforcing material 10 in the stretched state is arranged. It is sufficient if it is capable of exhibiting a stress equal to or higher than that of a steel pipe without steel.
【００１７】挿入する補強材１０は、ガラス繊維、炭素
繊維等の無機繊維、あるいはビニロン繊維、アクリル繊
維、ポリエチレン繊維、全芳香族ポリエステル繊維、パ
ラ型アラミド繊維等の高強力ないわゆるハイパフオーマ
ンス繊維、さらにはスチール繊維、更にまた一般に用い
られる鉄筋、ＰＣ鋼等が挙げられ、特に限定はされない
が、硬化剤９でその特性を劣化させることのない組み合
わせを考慮し、あるいは対策を講ずることが必要であ
る。The reinforcing material 10 to be inserted is an inorganic fiber such as glass fiber, carbon fiber or the like, or a so-called high-performance high-performance fiber such as vinylon fiber, acrylic fiber, polyethylene fiber, wholly aromatic polyester fiber or para-aramid fiber. Further, steel fibers, and generally used reinforcing bars, PC steel, and the like can be mentioned, but it is not particularly limited, but it is necessary to consider a combination that does not deteriorate the characteristics of the curing agent 9 or take measures. is there.
【００１８】ここに用いる棒状補強材の内、有機繊維と
しては、特に、高強力、低伸度のものがより好ましく、
また長尺状でかつ伸長状態で硬化剤９中に出来るだけ分
散配置することが望ましい。その長尺状とは、モノフイ
ラメントを単に集束させた状態のロツド状物であっても
よいが、該集束フイラメントを組み紐状に構成すると
か、あるいは集束フイラメント（芯フイラメント）の周
りにさらに集束フイラメントを斜交巻きした状態のロツ
ド状物に構成すれば、その表面を凹凸形状とすることが
出来、これにより硬化剤９との物理的な結合をより高め
ることが出来てより望ましい。とりわけ、前述のハイパ
フオーマンス繊維、特にＰＶＡ繊維は、上記組み紐状あ
るいは斜交巻き状等の、表面が凹凸状のロツド状物に形
成した線条物はコストが低く、また伸度も低いので、本
発明の補強繊維として、より好適である。Among the rod-shaped reinforcing materials used here, as the organic fibers, those having high strength and low elongation are more preferable,
Further, it is desirable to disperse the curing agent 9 in a long and extended state as much as possible. The elongated shape may be a rod-shaped material in which the monofilament is simply focused, but the focused filament is formed into a braided shape, or the focused filament (core filament) is further concentrated around the filament. It is more desirable to form the rod-shaped material in a state of being obliquely wound, since the surface thereof can be formed into an uneven shape, whereby the physical bond with the curing agent 9 can be further enhanced. In particular, since the above-mentioned high performance fibers, especially PVA fibers, the filaments formed on the rod-shaped material having an uneven surface such as the above-mentioned braided shape or oblique winding shape have low cost and low elongation, It is more suitable as the reinforcing fiber of the present invention.
【００１９】これら補強材１０を構成する繊維は、いた
ずらに高強力である必要はなく、柱脚部３内に硬化剤９
と共に充填されて目的の曲げ特性を有するものであれば
よい。その意味で、補強材１０と硬化剤９との比率は適
宜選定されればよいが、硬化剤９が流下できる範囲内で
補強材１０を比較的多く使用すれば、該補強材１０が１
箇所に偏ることなく、該柱脚部３内全体に自ずと均等に
分散状態で配置されることとなる。The fibers constituting these reinforcing members 10 do not need to be unnecessarily high in strength, but the curing agent 9 in the column base 3 is not required.
What is necessary is just to be filled with and to have a desired bending characteristic. In that sense, the ratio between the reinforcing material 10 and the curing agent 9 may be appropriately selected. However, if the reinforcing material 10 is used in a relatively large amount within a range where the curing agent 9 can flow down, the reinforcing material 10 is 1
It is naturally distributed evenly in the entire column base portion 3 without being biased to one place.
【００２０】柱脚部３の欠損部７は、補強材１０の柱脚
部３内での配置を調整する穴ともなるが、該補強材１０
を挿入口１１から挿入後、硬化剤９の挿入のためテープ
等にてその流失を防止する。この流失防止をした後、硬
化剤９の挿入充填を行う。挿入充填後、該硬化剤９が硬
化するまで養生時間が必要であるが、本発明の補修作業
は以上のようなものであり、極めて簡単容易なものであ
る。なお、欠損部７の表面を目立たなくするために必要
ならば、別途適宜に表装作業を行えばよい。また挿入口
１１、１２は、雨水の流入を防ぐため別途その封止作業
を行うことが望ましい。The missing portion 7 of the column base portion 3 also serves as a hole for adjusting the arrangement of the reinforcing material 10 in the column base portion 3.
After being inserted through the insertion port 11, the hardener 9 is inserted so as to prevent the hardener 9 from flowing away. After preventing this washout, the curing agent 9 is inserted and filled. After the insertion and filling, a curing time is required until the hardening agent 9 is hardened, but the repair work of the present invention is as described above and is extremely simple and easy. If necessary to make the surface of the defective portion 7 inconspicuous, a separate mounting operation may be performed. Further, it is desirable that the insertion openings 11 and 12 be separately sealed in order to prevent the inflow of rainwater.
【００２１】[0021]
【実施例】以下に本発明を実施例を用いてより具体的に
説明するが、本発明はそれにより限定されない。 実施例１；一般的な手摺柱脚部に相当する次ぎのような
モデルテストを行った。即ち、まず、外径４２．７ｍ
ｍ、内径３８．１ｍｍの構造用鋼管の、長さ１５００ｍ
ｍの中央部で２つに切断した。該切断した一方の鋼管の
切断端より５５ｍｍの位置の内部に、後に挿入する補強
材及び硬化剤が漏れないように、内径に合わせた仕切板
を装着した。（この仕切板はベランダでの手摺柱脚部の
下端を支持し固定しているめベースプレートに対応して
いる。）また、他の一方の鋼管の切断端より５５ｍｍの
位置にドリルで１０ｍｍ直径の穴をあけた。この２つの
鋼管を、その両者切断端の間が２０ｍｍとなるように離
して仮固定し、それを垂直に設置した。離した２０ｍｍ
切断端間は、後に硬化剤が漏れないようにその周囲にカ
バーシートを取付けた。EXAMPLES The present invention will be described more specifically below with reference to examples, but the present invention is not limited thereto. Example 1 The following model test corresponding to a general handrail column leg was conducted. That is, first, the outer diameter is 42.7 m.
m, structural steel pipe with an inner diameter of 38.1 mm, length 1500 m
It was cut in two at the center of m. A partition plate adjusted to the inner diameter was attached to the inside of a position 55 mm from the cut end of the one cut steel pipe so that the reinforcing material and the hardening agent to be inserted later did not leak. (This partition plate corresponds to the base plate that supports and fixes the lower end of the handrail post on the veranda.) Also, a 10 mm diameter drill is used at a position 55 mm from the cut end of the other steel pipe. I made a hole. The two steel pipes were temporarily fixed so that the distance between the two cut ends was 20 mm, and they were installed vertically. 20mm apart
Between the cut ends, a cover sheet was attached to the periphery so that the curing agent would not leak later.
【００２２】この設置した鋼管の前記開口穴より前述曲
げテストで用いたものと同じ補強材及び硬化剤を投入し
た。投入した補強材は４０本、その長さは１３０ｍｍ
（即ち、前記仕切板から開口穴に達する長さ）であり、
また硬化剤も開口穴に達するまで投入充填した。 （１）補強材；ＰＶＡ繊維７２００デニール、８本の周
りに、同じＰＶＡ繊維７２００デニール、２本を斜交巻
きしたロツド状物。該１本のロツド状物の引張強度は８
２ｋｇ／ｍｍ2、伸度は５．２％、ヤング率は２６５０
ｋｇ／ｍｍ2。 （２）硬化剤；興和化成製“ポリモルタル”（エポキシ
系樹脂を主体とした硬化性樹脂、樹脂とその硬化剤は
３：１）The same reinforcing material and hardening agent as those used in the above-mentioned bending test were put in through the opening hole of the installed steel pipe. 40 reinforcements were added and the length was 130mm
(That is, the length from the partition plate to reach the opening),
The curing agent was also charged and filled until it reached the opening hole. (1) Reinforcing material: PVA fiber 7200 denier, a rod-shaped material in which the same PVA fiber 7200 denier and two fibers are wound around eight fibers in an oblique manner. The tensile strength of the rod-shaped material is 8
2 kg / mm 2 , elongation 5.2%, Young's modulus 2650
kg / mm 2 . (2) Hardener; Kowa Kasei's "polymortar" (curable resin mainly composed of epoxy resin, resin and its hardener 3: 1)
【００２３】上記の投入後３日間放置し硬化させ、該鋼
管の曲げテストを行った。この曲げテストは、鋼管切断
端間２０ｍｍを中心にし、その中心点から左右５０ｍｍ
の２点、即ち、長さ１００ｍｍの２点を、該鋼管と同じ
円弧を有するアダプターで水平支持し、その中心点へ荷
重をかけ、その時の歪みを測定した。この測定は島津社
製オートグラフ（ＨＳ＝１．０ｍｍ／ｍｉｎ、ＣＳ＝２
５ｍｍ／ｍｉｎ）を用いた。After the above-mentioned charging, the steel pipe was left to stand for 3 days to be cured, and a bending test of the steel pipe was conducted. This bending test is centered at 20 mm between the cut ends of the steel pipe, and 50 mm to the left and right from the center point.
2 points, that is, two points having a length of 100 mm were horizontally supported by an adapter having the same arc as the steel pipe, a load was applied to the center point, and the strain at that time was measured. This measurement is made by Shimadzu Autograph (HS = 1.0 mm / min, CS = 2
5 mm / min) was used.
【００２４】このテスト結果を図６に示す。図６で示さ
れる如く、補強材を４０本を配置し硬化剤で補強した鋼
管は、鉄製の鋼管、即ち、手摺の柱脚部と同等の曲げ応
力を有することが確かめられる。The test results are shown in FIG. As shown in FIG. 6, it is confirmed that the steel pipe in which 40 reinforcing members are arranged and reinforced with the hardening agent has the bending stress equivalent to that of the steel pipe made of iron, that is, the column base portion of the handrail.
【００２５】[0025]
【発明の効果】本発明の補修方法は、腐蝕した鋼管製柱
脚部を有する手摺の補修方法として、また同様の屋外体
育施設、遊具施設の腐食した鋼管製施設の補修方法とし
て、その作業が簡単で、工期が極めて短いものであり、
その費用も大幅に低減でき、工事期での安全性もよい。
また補修素材の点から、その補修後の性能が長期にわた
って安定である。即ち本発明は、実用に極めて優れた発
明である。EFFECT OF THE INVENTION The repair method of the present invention is used as a repair method for handrails having corroded steel pipe column bases, and as a repair method for corroded steel pipe facilities in similar outdoor gyms and playground facilities. It ’s easy and the construction period is very short.
The cost can be greatly reduced and the safety during the construction period is good.
Also, in terms of repair material, the performance after repair is stable for a long period of time. That is, the present invention is an extremely excellent invention for practical use.
【図１】ベランダ部等屋外に設置された一般手摺柱脚部
の該設置部を示す模式断面図である。FIG. 1 is a schematic cross-sectional view showing an installation part of a general handrail column leg installed outdoors such as a veranda.
【図２】本発明方法で補修した補修後の手摺柱脚部３内
の内部状態を模式的に示した該柱脚部設置部を示す模式
断面図である。FIG. 2 is a schematic cross-sectional view showing a column base installation portion schematically showing an internal state inside the handrail column base 3 after repairing by the method of the present invention.
【図３】補強材１０を分散配置した硬化剤９からなる棒
状物の断面図である。FIG. 3 is a cross-sectional view of a rod-shaped object made of a curing agent 9 in which reinforcing materials 10 are dispersed and arranged.
【図４】補強材１０を分散配置した硬化剤９からなる棒
状物、並びに補強材１０を配置しない硬化剤９からなる
棒状物の、それぞれの荷重−タワミ特性曲線図である。FIG. 4 is a load-deflection characteristic curve diagram of a rod-shaped object made of the curing agent 9 in which the reinforcing material 10 is dispersedly arranged and a rod-shaped object made of the curing agent 9 in which the reinforcing material 10 is not disposed.
【図５】本発明補修方法の施工方法を説明するための柱
脚部設置部の断面図である。FIG. 5 is a cross-sectional view of a column base installation portion for explaining a construction method of the repair method of the present invention.
【図６】本発明実施例で得られた供試体の荷重−タワミ
特性曲線図である。FIG. 6 is a load-deflection characteristic curve diagram of the test piece obtained in the example of the present invention.
１ 室内 ２ ベランダ ３ 手摺の柱脚部 ４ ベースプレート ５ アンカーボルト ６ 笠木体 ７ 欠損部 ８ 補強体 ９ 硬化性組成物（硬化剤） １０ 伸長状態の長尺繊維補強材（補強材） １１ 繊維補強材の挿入口 １２ 硬化性組成物の挿入口 1 Indoor 2 Veranda 3 Pillar part of handrail 4 Base plate 5 Anchor bolt 6 Barrel 7 Defect 8 Reinforcement 9 Curable composition (Curing agent) 10 Long fiber reinforcement (reinforcement) 11 in stretched state Fiber reinforcement Insertion port for curable composition 12
Claims (1)
る柱脚部内に伸長状態の長尺棒状補強材を配した硬化性
組成物を充填硬化させ該欠損部位を補修する方法であっ
て、該柱脚部の欠損部位より高い位置に前記長尺棒状補
強材と硬化性組成物の挿入口を開口し、該挿入口より該
長尺棒状補強材と硬化性組成物とを挿入し、該長尺棒状
補強材を内包した状態で該硬化性組成物を硬化させるこ
とを特徴とする鋼管製柱脚部の補修方法。1. A method for repairing a defective portion by filling and curing a curable composition comprising elongated rod-shaped reinforcing members in an elongated state in the column base extending above and below the defective portion of a steel pipe column base, the method comprising: The insertion opening of the long rod-shaped reinforcing material and the curable composition is opened at a position higher than the defective portion of the column base, and the long rod-shaped reinforcing material and the curable composition are inserted from the insertion opening, A method of repairing a steel pipe column base, which comprises curing the curable composition in a state where a long rod-shaped reinforcing material is included.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8961394A JPH07292999A (en) | 1994-04-27 | 1994-04-27 | Method for repairing corroded steel-pipe pole pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8961394A JPH07292999A (en) | 1994-04-27 | 1994-04-27 | Method for repairing corroded steel-pipe pole pedestal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07292999A true JPH07292999A (en) | 1995-11-07 |
Family
ID=13975609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8961394A Pending JPH07292999A (en) | 1994-04-27 | 1994-04-27 | Method for repairing corroded steel-pipe pole pedestal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07292999A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041708A (en) * | 2001-07-27 | 2003-02-13 | Ps Mitsubishi Construction Co Ltd | Member for structure |
| JP2006316585A (en) * | 2005-05-16 | 2006-11-24 | Kenichi Yasuda | Anticorrosive reinforcing method of steel pipe column |
| JP2008531876A (en) * | 2005-02-22 | 2008-08-14 | フレシネ | Method for strengthening cylindrical metal structure and structure obtained thereby |
| JP2010133166A (en) * | 2008-12-05 | 2010-06-17 | Sanwa Alum Kogyo Kk | Method for repairing metal hollow support |
-
1994
- 1994-04-27 JP JP8961394A patent/JPH07292999A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041708A (en) * | 2001-07-27 | 2003-02-13 | Ps Mitsubishi Construction Co Ltd | Member for structure |
| JP2008531876A (en) * | 2005-02-22 | 2008-08-14 | フレシネ | Method for strengthening cylindrical metal structure and structure obtained thereby |
| US8201332B2 (en) | 2005-02-22 | 2012-06-19 | Soletanche Freyssinet | Method for reinforcing a metal tubular structure |
| JP2006316585A (en) * | 2005-05-16 | 2006-11-24 | Kenichi Yasuda | Anticorrosive reinforcing method of steel pipe column |
| JP2010133166A (en) * | 2008-12-05 | 2010-06-17 | Sanwa Alum Kogyo Kk | Method for repairing metal hollow support |
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