JP3077293U - H steel and steel sheet pile fasteners for temporary guard fence - Google Patents
H steel and steel sheet pile fasteners for temporary guard fenceInfo
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- JP3077293U JP3077293U JP2000008587U JP2000008587U JP3077293U JP 3077293 U JP3077293 U JP 3077293U JP 2000008587 U JP2000008587 U JP 2000008587U JP 2000008587 U JP2000008587 U JP 2000008587U JP 3077293 U JP3077293 U JP 3077293U
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- steel
- sheet pile
- steel sheet
- back plate
- backing plate
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Abstract
(57)【要約】
【課題】 従来、道路斜面の崩落現場での復旧工事は、
仮設防護柵を設営することになるが、この工事は、路面
に垂立させたＨ鋼の支柱を必要本立て、このスパンに鋼
矢板を横積みして防護柵を設営するものであって、鋼矢
板をＨ鋼の支柱に溶接するという大変に手間取る作業を
強いられていたので、簡単に鋼矢板とＨ鋼を組合わす金
具が期待されていた。
【解決手段】 背板（５）にＨ鋼（２）が嵌入する部分
に溝（６）を設け、背板（５）と組を成す当て板（７）
との間に鋼矢板（３）を挟着し、背板（５）と当て板
（７）とをボルト（８ａ）及びナット（９）で締め込
む。
(57) [Summary] [Problem] Conventionally, restoration work at the collapse site of a road slope
Temporary protection fences will be set up, but this construction will require the H steel pillars hanging vertically on the road surface, and the steel fences will be piled horizontally on this span to set up protection fences. Since the work of welding the sheet pile to the H-steel post was very time-consuming, a metal fitting for easily combining the steel sheet pile and the H-steel was expected. A groove (6) is provided at a portion where an H steel (2) fits in a back plate (5), and a backing plate (7) forms a pair with the back plate (5).
And a steel sheet pile (3) is sandwiched between them, and the back plate (5) and the backing plate (7) are tightened with bolts (8a) and nuts (9).
Description
【０００１】[0001]
本考案は、道路の崩壊斜面の復旧工事に伴う仮設防護柵の設営工事において、 垂立するＨ鋼柱と鋼矢板とを固定させる止め金具に関するものである。 The present invention relates to a fastener for fixing a vertical H-steel column and a steel sheet pile in construction work of a temporary protective fence accompanying a restoration work on a collapsed slope of a road.
【０００２】[0002]
図１は、道路側面の斜面崩落箇所の復旧工事状況を示す。 従来、道路側面（１）の斜面崩落事故が発生すると緊急の復旧工事が行われる が、日本は雨量が多く、特に台風災害は毎年発生し中山間地域では道路斜面の崩 落は度々発生している。又、斜面の崩落は雨が原因である場合が多いが、地震で も起こるものである。日本は自然災害が多いにも拘わらず災害慣れしている感さ え見られる。その一例が道路の崩落箇所の復旧工事の非能率性であろう。つまり 、崩落箇所に仮設防護柵を設営するが、この工事はＨ鋼（２）の支柱に鋼矢板（ シートパイル）（３）を横積みして崩落する土砂（４）を受け止め、新たな崩落 を防止するものであった。この工事では、従来よりＨ鋼（２）と鋼矢板（３）と を溶接して防護柵を設営し、撤収時はガス切り等で溶接部分を外す工法を行って いた。 Fig. 1 shows the status of restoration work at a slope collapse point on the side of the road. Conventionally, emergency restoration work is carried out when a road side (1) slope collapse accident occurs. However, heavy rainfall occurs in Japan, especially typhoon disasters every year, and road slope collapses occur frequently in mountainous areas. I have. Slope collapse is often caused by rainfall, but can also be caused by earthquakes. Japan seems to be used to disasters despite many natural disasters. One example would be the inefficiency of rehabilitating road collapses. In other words, a temporary protective fence will be set up at the site of the collapse, but this work will receive the collapsed earth and sand (4) by stacking steel sheet piles (sheet piles) (3) on the columns of H steel (2) and receiving a new collapse. Was to prevent. In this work, a steel fence (2) and a steel sheet pile (3) were welded together to construct a protective fence, and a welding method was used to remove the welded parts at the time of withdrawal.
【０００３】[0003]
従来の技術で述べたように、道路斜面の崩落現場での復旧工事は、緊急時には 仮設防護柵を設営することになる。この工事は、路面に垂立させたＨ鋼の支柱を 必要本立て、このスパンに鋼矢板を横積みして防護柵を設営するものである。こ の時、従来の工法では鋼矢板をＨ鋼の支柱に溶接していたので大変手間取る作業 を強いられていた。 災害発生と共に緊急な復旧工事が求められる現場では、天候等の工事条件が回 復するまで待機することができない場合がある。この非常時には速やかな復旧工 事が求められるが、それも悪天候の中での復旧工事は二次災害の危険性をはらみ 、残念ながら過去には痛ましい二次災害が実際に発生している。この二次災害の 原因の一つに、作業性の悪さや非能率性が指摘されている。 従来の工法は、Ｈ鋼の支柱に鋼矢板を一枚一枚順番に溶接して防護柵に仕上げ る方法であった。溶接は手間がかかり、ケーブルの引き回し等で煩雑になる欠点 がある。溶接箇所が低所であれば容易であるが、高所になると作業性の低下は避 けられなくなる。又、崩落箇所の修復後に仮設防護柵を撤収する際には、溶接部 分をガス切り等で剥離させる必要があるが、溶接箇所はなかなか剥離が困難であ り、然もＨ鋼と鋼矢板を再利用するためには、溶接部分の整備が必要となる。つ まり、溶接部分は突出部となるので、この部分を削除する必要からＨ鋼と鋼矢板 の保守作業をすることになる。この事実は、作業性の悪さ、人件費等の高騰を招 くことになっている。 一方、昨今は公共事業の見直しが指摘され、これに伴う工費の軽減化が重要視 されていることから、作業効率の向上は時代のニーズであり、何としても達成せ ねばならない課題である。 このように道路の斜面崩落に伴う復旧工事においても、作業の迅速性・効率性 が問われることになり、作業効率の向上が課題となっていた。 本課題は、Ｈ鋼の支柱と鋼矢板を溶接する工法に問題があるとの判断で、効率 良くＨ鋼柱と鋼矢板とを組み合わせる方法を考察することになった。 そこで、研究の結果、Ｈ鋼柱と鋼矢板を溶接するのではなく、特殊金具で固定 すればよいことが理解できたので、先行調査すると「特願平１０−２０８４８８ 号」が見つかった。この出願を検討すると、金具はＨ鋼を追加工した一体式であ るが、Ｈ鋼柱にボルトを当てて締め上げる方法である。この方法は、ボルトの先 端部分で金具とＨ鋼柱とを固定しているので、接触面積が少ないために挟着力が 乏しいと推測され、ひいては鋼矢板の脱落の危険性も危惧される。 そこで、溶接に依存しない方法で、確実にＨ鋼柱と鋼矢板とを連結固定できる 止め金具を開発することが課題となった。 As mentioned in the prior art, restoration work at the site of a road slope collapse will require the provision of temporary protective fences in an emergency. In this work, the necessary H steel pillars hanging on the road surface will be required, and steel sheet piles will be laid horizontally on this span to set up a protective fence. At this time, in the conventional method, the steel sheet pile was welded to the H-steel post, so the work was extremely time-consuming. At sites where urgent restoration work is required along with the occurrence of a disaster, it may not be possible to wait until construction conditions such as weather are restored. In this emergency, prompt restoration work is required, but restoration work in bad weather involves the danger of secondary disasters, and unfortunately, painful secondary disasters have actually occurred in the past. Poor workability and inefficiency are pointed out as one of the causes of this secondary disaster. The conventional construction method was a method in which steel sheet piles were welded one by one to H steel columns in order to finish the protective fence. Welding is troublesome and has the drawback of complicating cable routing. It is easy if the weld is at a low place, but if it is at a high place, a decrease in workability cannot be avoided. Also, when the temporary protective fence is withdrawn after repairing the collapsed part, it is necessary to peel off the welded part by gas cutting, etc. However, it is difficult to peel off the welded part. In order to reuse steel, maintenance of the welded parts is required. In other words, since the welded portion becomes a protruding portion, maintenance work on the H steel and the steel sheet pile is required since this portion needs to be deleted. This fact leads to poor workability and soaring labor costs. On the other hand, recently, the review of public works has been pointed out, and the reduction of construction costs has been regarded as important. Therefore, improving work efficiency is a need of the times, and it must be achieved at all costs. In this way, promptness and efficiency of work were also required for restoration work following the collapse of road slopes, and improvement of work efficiency was an issue. The task was to judge that there was a problem in the method of welding the H steel column and the steel sheet pile, and came to consider a method of efficiently combining the H steel column and the steel sheet pile. Therefore, as a result of the research, it was understood that H-columns and steel sheet piles should be fixed with special metal fittings instead of welding. Therefore, in a preliminary survey, "Japanese Patent Application No. 10-208488" was found. In consideration of this application, the metal fitting is an integrated type with additional H steel, but it is a method of tightening the H steel column with bolts. In this method, since the metal fitting and the H steel column are fixed at the tip end of the bolt, the contact area is small, so it is assumed that the pinching force is poor, and there is also a concern that the steel sheet pile may fall off. Therefore, it has become an issue to develop a fastener that can reliably connect and fix the H steel column and the steel sheet pile by a method that does not depend on welding.
【０００４】[0004]
仮設防護柵は、Ｈ鋼の支柱を等間隔に垂立させて支柱のスパンに鋼矢板を横置 きの状態で積層する。従来は、Ｈ鋼柱と鋼矢板とは溶接することで固定していた が、この手段には問題点が多々あるので、本考案では夫々を固定するための止め 金具を利用する。 Ｈ鋼の支柱と鋼矢板とを固定する止め金具は、安易な取り付け作業を約束する だけではなく、信頼性が重要である。溶接工法は確実であるが、作業性の点で問 題があり、止め金具を使用するに当たって止め金具が脱落するようでは危険であ る。 そこで、十分な信頼性を有する止め金具を開発することになるが、止め金具で 固定できる原理は、止め金具とＨ鋼或いは鋼矢板との摩擦力を利用しているので 、摩擦力を最大限に発生させるような構造が求められる。つまり、摩擦力は接触 面積に依存し、一般に接触面積を広くすると摩擦力を増大させることができる。 上記の理由から、止め金具とＨ鋼柱或いは鋼矢板との接触面積を広く取り、一 点で挟着させるのではなく、面で挟着させるような構造とする。 Temporary protective fences will be constructed with H steel columns suspended at equal intervals and steel sheet piles will be laid horizontally on the columns. In the past, H steel columns and steel sheet piles were fixed by welding, but this method has many problems, so in the present invention, a fastener for fixing each is used. The fasteners for fixing the H steel columns and sheet piles not only promise easy installation work, but also require reliability. Although the welding method is reliable, there is a problem in terms of workability, and it is dangerous if the fasteners fall off when using the fasteners. Therefore, a fastener with sufficient reliability will be developed, but the principle of fixing with the fastener is that the frictional force between the fastener and H steel or steel sheet pile is used, so the frictional force is maximized. Is required. That is, the frictional force depends on the contact area, and in general, increasing the contact area can increase the frictional force. For the above reasons, the contact area between the fastener and the H steel column or steel sheet pile is widened, and the structure is such that it is not clamped at one point but clamped by a surface.
【０００５】[0005]
本考案を図２で説明する。 本図は本考案の使用時の断面図を表している。 背板（５）にＨ鋼（２）が嵌入する部分に溝（６）を設け、背板（５）と組を 成す当て板（７）との間に鋼矢板（３）を挟着し、背板（５）と当て板（７）と をボルト（８ａ）及びナット（９）で締め込む。 背板（５）に設けた溝（６）の深さは、Ｈ鋼（２）の厚みよりは僅かに浅くし てあるので、ボルト締めすることで背板（５）、Ｈ鋼（２）、鋼矢板（３）及び 当て板（７）とを強力に締め付ける。 本考案は、各部分を面接触させるので、ボルト締めすることで強力な摩擦力が 発生するために、各部分は滑落することはない。 The present invention will be described with reference to FIG. This figure shows a cross-sectional view when the present invention is used. A groove (6) is provided at a portion where the H steel (2) fits into the back plate (5), and a steel sheet pile (3) is sandwiched between the back plate (5) and a compensating plate (7). , The back plate (5) and the backing plate (7) are tightened with bolts (8a) and nuts (9). Since the depth of the groove (6) provided in the back plate (5) is slightly smaller than the thickness of the H steel (2), the back plate (5) and the H steel (2) are bolted. , Steel sheet pile (3) and backing plate (7). In the present invention, each part is brought into surface contact, so that a strong frictional force is generated by bolting, so that each part does not slide down.
【０００６】[0006]
本考案の第１実施例を図３で説明する。 背板（５）は、Ｌアングル（山形鋼）（１０）とＨ鋼（２）の厚み以下の肉厚 の平鋼（１１）とを溶接し、Ｌアングル（１０）と平鋼（１１）とを貫通する通 し孔（１２）を設ける。 次に、背板（５）と組を成す当て板（７）は、背板（５）の通し孔（１２）に 対応させてボルト（８ａ）を溶接し、当て板（７）のボルト（８ａ）を背板（５ ）の通し孔（１２）に貫通させ、裏からナット（９）で締める。 FIG. 3 shows a first embodiment of the present invention. The back plate (5) is formed by welding an L angle (angle steel) (10) and a flat steel (11) having a thickness equal to or less than the thickness of the H steel (2), and connecting the L angle (10) and the flat steel (11). Is provided with a through hole (12) penetrating through. Next, the bolt (8a) is welded to the backing plate (5) corresponding to the through hole (12) of the backing plate (5), and the bolt (8) of the backing plate (7) is formed. 8a) is passed through the through hole (12) of the back plate (5) and tightened from the back with the nut (9).
【０００７】 ここで背板（５）にＬアングル（１０）を使用する理由は、Ｌアングル（１０ ）の代わりに平板とするよりも強度があり、更に曲げ部分が踏み台となり利便性 が付加されるからである。The reason for using the L angle (10) for the back plate (5) is that the back plate (5) is stronger than a flat plate instead of the L angle (10), and that the bent portion becomes a step and the convenience is added. This is because that.
【０００８】 本考案の第２実施例を図４で説明する。 背板（５）は、Ｌアングル（１０）に、Ｈ鋼（２）の厚み以下の肉厚の平鋼（ １１）を溶接し、Ｌアングル（１０）と平鋼（１１）とを貫通する通し孔（１２ ）を設ける。 次に、背板（５）と組を成す当て板（７）にも、背板（５）の通し孔（１２） に対応させて通し孔（１２）を設け、当て板（７）と背板（５）の通し孔（１２ ）にボルト（８ａ）を貫通させ、裏からナット（９）で締める。A second embodiment of the present invention will be described with reference to FIG. The back plate (5) welds a flat steel (11) having a thickness equal to or less than the thickness of the H steel (2) to the L angle (10) and penetrates the L angle (10) and the flat steel (11). A through hole (12) is provided. Next, the backing plate (5) is provided with a through-hole (12) corresponding to the through-hole (12) of the backing plate (5) in the backing plate (5). A bolt (8a) is passed through the through hole (12) of the plate (5) and tightened from the back with a nut (9).
【０００９】 本考案の第３実施例を図５で説明する。 本実施例は、第２実施例の２本のボルト（８ａ）を１本のＵボルト（８ｂ）や 類似のボルトに代えた実施例である。A third embodiment of the present invention will be described with reference to FIG. This embodiment is an embodiment in which the two bolts (8a) of the second embodiment are replaced with one U bolt (8b) or a similar bolt.
【００１０】 本考案の第４実施例を図６で説明する。 背板（５）は、Ｌアングル（１０）に、Ｈ鋼（２）の厚み以下の肉厚の平鋼（ １１）を溶接し、Ｌアングル（１０）と平鋼（１１）とを貫通する雌ねじ（１３ ）を切る。 次に、背板（５）と組を成す当て板（７）には、背板（５）の通し孔（１２） に対応させて通し孔（１２）を設け、当て板（７）の通し孔（１２）にボルト（ ８ａ）を貫通させ、背板（５）の雌ねじ（１３）にねじ込む。A fourth embodiment of the present invention will be described with reference to FIG. The back plate (5) welds a flat steel (11) having a thickness equal to or less than the thickness of the H steel (2) to the L angle (10) and penetrates the L angle (10) and the flat steel (11). Cut the female screw (13). Next, a through hole (12) is provided in the backing plate (7), which forms a pair with the back plate (5), so as to correspond to the through hole (12) of the back plate (5). A bolt (8a) is passed through the hole (12) and screwed into the female screw (13) of the back plate (5).
【００１１】 本考案の第５実施例を図７で説明する。 背板（５）は、Ｌアングル（１０）に、Ｈ鋼（２）の厚み以下の肉厚の平鋼（ １１）を溶接し、Ｌアングル（１０）と平鋼（１１）とを貫通するボルト（８ａ ）を裏から溶接する。 次に、背板（５）と組を成す当て板（７）は、背板（５）のボルト（８ａ）に 対応させて通し孔（１２）を設け、当て板（７）の通し孔（１２）に背板（５） のボルト（８ａ）を貫通させ、ナット（９）で締める。 又、ボルト（８ａ）の数は１本よりも複数本使用する方が強度面で好ましい。 本第５実施例はボルト（８ａ）を背板（５）に溶接しているが、背板（５）に 通し孔（１２）を設けてボルト（８ａ）を貫通させることもできるが、これは第 ２実施例においてボルト（８ａ）を逆向きに貫通させてナット（９）締めするこ とと同様となる。A fifth embodiment of the present invention will be described with reference to FIG. The back plate (5) welds a flat steel (11) having a thickness equal to or less than the thickness of the H steel (2) to the L angle (10) and penetrates the L angle (10) and the flat steel (11). The bolt (8a) is welded from behind. Next, the backing plate (5), which forms a pair with the backing plate (5), has a through hole (12) corresponding to the bolt (8a) of the backing plate (5), and the through hole (12) of the backing plate (7). 12) Pass the bolt (8a) of the back plate (5) through and tighten it with the nut (9). It is more preferable to use a plurality of bolts (8a) than a single bolt in terms of strength. Although the bolt (8a) is welded to the back plate (5) in the fifth embodiment, a through hole (12) may be provided in the back plate (5) to allow the bolt (8a) to pass therethrough. Is the same as in the second embodiment, in which the bolt (8a) is inserted in the opposite direction and the nut (9) is tightened.
【００１２】 本考案の第６実施例を図８で説明する。 背板（５）は、Ｌアングル（１０）に、Ｈ鋼（２）の厚み以下の肉厚の平鋼（ １１）を溶接し、Ｌアングル（１０）と平鋼（１１）とを貫通する通し孔（１２ ）を設ける。 次に、背板（５）と組を成す当て板（７）には、背板（５）の通し孔（１２） に対応させて雌ねじ（１３）を設け、背板（５）の通し孔（１２）にボルト（８ ａ）を貫通させ、当て板（７）の雌ねじ（１３）にねじ込む。A sixth embodiment of the present invention will be described with reference to FIG. The back plate (5) welds a flat steel (11) having a thickness equal to or less than the thickness of the H steel (2) to the L angle (10) and penetrates the L angle (10) and the flat steel (11). A through hole (12) is provided. Next, a female screw (13) is provided on the backing plate (7), which forms a pair with the back plate (5), in correspondence with the through hole (12) of the back plate (5). The bolt (8a) is passed through (12) and screwed into the female screw (13) of the backing plate (7).
【００１３】 本考案の第７実施例を図９で説明する。 背板（５）は、Ｌアングル（１０）に、Ｈ鋼（２）の厚み以下の肉厚の平鋼（ １１）を溶接し、Ｌアングル（１０）と平鋼（１１）とを貫通する通し孔（１２ ）を設ける。 次に、背板（５）と組を成す当て板（７）をＬアングル（１０）とし、背板（ ５）の通し孔（１２）に対応させてボルト（８ａ）を溶接し、背板（５）の通し 孔（１２）にボルト（８ａ）を貫通させ、背板（５）の背面からナット（９）で 締める。 ここで、Ｌアングルの当て板（７）にボルト（８ａ）を溶接しないで通し孔（ １２）を設け、当て板（７）と背板（５）の通し孔（１２）にボルト（８ａ）を 貫通させてナット（９）で締めることもできる。A seventh embodiment of the present invention will be described with reference to FIG. The back plate (5) welds a flat steel (11) having a thickness equal to or less than the thickness of the H steel (2) to the L angle (10) and penetrates the L angle (10) and the flat steel (11). A through hole (12) is provided. Next, the backing plate (5), which forms a pair with the backing plate (5), has an L angle (10), and bolts (8a) are welded to correspond to the through holes (12) of the backing plate (5). The bolt (8a) is passed through the through hole (12) of (5) and tightened from the back of the back plate (5) with the nut (9). Here, a through hole (12) is provided in the L-angle backing plate (7) without welding the bolt (8a), and the bolt (8a) is provided in the through-hole (12) of the backing plate (7) and the back plate (5). Can be passed through and tightened with the nut (9).
【００１４】 本考案の使用状態を図１０で説明する。 水平或いは略水平にした鋼矢板（３）で止め金具（１４）のボルト（８ａ）部 分を上下から挟む状態で積層し、止め金具（１４）の背板（５）の溝（６）にＨ 鋼（２）を嵌入させ、ボルト（８ａ）のねじ部にナット（９）を挿入して締める 。すると、背板（５）の溝（６）の深さはＨ鋼（２）の厚みより僅かに浅いので 、鋼矢板（３）とＨ鋼（２）が面接触し、更に背板（５）と当て板（７）とも面 接触するので強力に固定される。図１１は使用状態を示す側面断面図である。The use state of the present invention will be described with reference to FIG. The bolts (8a) of the fasteners (14) are laminated with a horizontal or substantially horizontal steel sheet pile (3) sandwiching the bolts (8a) from above and below, and inserted into the grooves (6) of the back plate (5) of the fasteners (14). H Insert the steel (2), insert the nut (9) into the thread of the bolt (8a) and tighten. Then, since the depth of the groove (6) of the back plate (5) is slightly smaller than the thickness of the H steel (2), the steel sheet pile (3) comes into surface contact with the H steel (2), and the back plate (5) ) And the contact plate (7) are in surface contact, so they are strongly fixed. FIG. 11 is a side sectional view showing a use state.
【００１５】 本考案の第８実施例を図１２で説明する。 止め金具（１４）は下の鋼矢板（３）と上の鋼矢板（３）とを固定させる金具 であるが、積層した鋼矢板（３）の最上部及び最下部の端部は１枚の鋼矢板（３ ）とＨ鋼（２）とを固定するので、ここではない他の鋼矢板（３）を挟着する部 分に間座板（１５）を設けた端部用止め金具（１６）を使用する。端部用止め金 具（１６）は、図１０における最上部と最下部で、１枚の鋼矢板（３）をＨ鋼（ ２）に固定するための止め金具である。 ここで、間座板（１５）は単独の部品として挟着させて使用してもよく、背板 （５）或いは当て板（７）に溶接手段、曲げ手段、削り出し手段等で、背板（５ ）或いは当て板（７）との一体形とすることもできる。An eighth embodiment of the present invention will be described with reference to FIG. The stopper (14) is a metal fitting for fixing the lower steel sheet pile (3) and the upper steel sheet pile (3). The uppermost and lowermost ends of the laminated steel sheet pile (3) are one piece. Since the steel sheet pile (3) and the H steel (2) are fixed, an end stopper (16) in which a spacer plate (15) is provided at a portion where another steel sheet pile (3) is sandwiched other than here. ). The end stopper (16) is a stopper for fixing one steel sheet pile (3) to the H steel (2) at the uppermost part and the lowermost part in FIG. Here, the spacer plate (15) may be used by being sandwiched as a single component, and is attached to the back plate (5) or the backing plate (7) by welding means, bending means, shaving means, or the like. (5) Alternatively, it may be integrated with the backing plate (7).
【００１６】 本考案の第９実施例を図１３で説明する。 上記の実施例では、当て板（７）、鋼矢板（３）、Ｈ鋼（２）そして背板（５ ）をボルト（８ａ）とナット（９）で締めるものであった。これは、締めつける ことで接触する夫々の部品間に発生する強力な摩擦力を利用するものであるが、 機械的な強制手段は施されていない。 そこで、本図に示すように、当て板（７）の上下の端部或いは端部付近に突起 部（１７）を設け、鋼矢板（３）の曲げ部（１８）が脱落しないようにする。こ れは、鋼矢板（３）の曲げ部（１８）がボルト（８ａ）と突起部（１７）の間で 規制されるので、鋼矢板（３）は当て板（７）から脱落することはない。 ここで、突起部（１７）は、鋼材を溶接してもよく、又、当て板（７）の端部 の曲げ手段や、削り出し手段等の様々な手段が考えられる。A ninth embodiment of the present invention will be described with reference to FIG. In the above embodiment, the backing plate (7), the steel sheet pile (3), the H steel (2) and the back plate (5) are fastened with the bolts (8a) and the nuts (9). This uses the strong frictional force generated between the parts that come into contact when they are tightened, but without mechanical forcing. Therefore, as shown in this figure, a projection (17) is provided at or near the upper and lower ends of the backing plate (7) to prevent the bent portion (18) of the steel sheet pile (3) from falling off. This is because the bent portion (18) of the steel sheet pile (3) is restricted between the bolt (8a) and the projection (17), so that the steel sheet pile (3) cannot fall off the caul plate (7). Absent. Here, the projecting portion (17) may be welded with a steel material, and various means such as a bending means of the end of the backing plate (7) and a shaving means may be considered.
【００１７】 本考案の第１０実施例を図１４で説明する。 同様に、鋼矢板（３）の脱落防止の機械的手段として、本図に示すように、背 板（５）に突起部（１７）を設ける手段もある。この効果は当て板（７）に突起 部（１７）を設けた場合と同様である。A tenth embodiment of the present invention will be described with reference to FIG. Similarly, as a mechanical means for preventing the steel sheet pile (3) from falling off, there is also a means for providing a projection (17) on the back plate (5) as shown in FIG. This effect is the same as when the projection (17) is provided on the backing plate (7).
【００１８】 ボルトの数は１本よりも、複数本使用する方が強度面で好ましい。 上記実施例の背板（５）或いは当て板（７）に使用するＬアングルは、Ｃ形鋼 や肉厚のある平鋼で代用でき、更に平鋼の曲げ加工や溶接加工、そして削り出し 等の加工品で代用することができる。 又、背板（５）の溝（６）を設けるために、溶接加工に限定することなく機械 加工等で溝（６）を成形することができる。 一方、止め金具（１４）の材質が鋼製に限定する事なく、他の金属、樹脂類、 木製等と、強度を克服すれば様々な材質を利用することができる。It is more preferable to use a plurality of bolts than a single bolt in terms of strength. The L angle used for the back plate (5) or the backing plate (7) in the above embodiment can be replaced by a C-shaped steel or a thick flat steel, and furthermore, a flat steel can be bent, welded, cut out, etc. Can be used instead. Further, since the groove (6) of the back plate (5) is provided, the groove (6) can be formed by machining or the like without being limited to welding. On the other hand, the material of the stopper (14) is not limited to steel, and various materials can be used as long as the strength is overcome, such as other metals, resins, and wood.
【００１９】[0019]
本考案は上記の通り構成されるので次の効果を奏する。 従来、道路側面の斜面崩落事故が発生すると緊急の復旧工事が行われるが、通 常は崩落箇所に仮設防護柵を設営して対応していた。この工事はＨ鋼の支柱に鋼 矢板（シートパイル）を横積みして新たな崩落を受け止めるものである。従来は 、Ｈ鋼と鋼矢板とを溶接して防護柵を設営し、撤収時はガス切り等で溶接部分を 外す工法を行っていた。しかし、この工事は、路面に垂立させたＨ鋼の支柱を必 要本立て、このスパンに鋼矢板を横積みして防護柵を設営するものであって、鋼 矢板をＨ鋼の支柱に溶接していたために大変な重労働を強いられていた。 災害発生と共に緊急な復旧工事が求められる現場では、速やかな復旧工事が求 められるが、それも悪天候の中での復旧工事は二次災害の危険性をはらみ、作業 性の悪さや非能率性が指摘されていた。従来の工法であるＨ鋼の支柱に鋼矢板を 一枚一枚順番に溶接して防護柵に仕上げる方法は、ケーブルやホースの引き回し 等で煩雑になる欠点がある。溶接箇所が低所であれば容易であるが、高所になる と作業性の低下は避けられなくなる。又、崩落箇所の修復後に仮設防護柵を撤収 する際には、溶接部分をガス切り等で剥離させる必要があるが、溶接箇所はなか なか剥離が困難であり、然もＨ鋼と鋼矢板を再利用するためには、溶接部分の整 備が必要となる。その溶接部分は突出部となるので、この部分を削除する必要か らＨ鋼と鋼矢板の保守作業をすることになる。この事実は、作業性の悪さから人 件費等の高騰を招くことにもなっていた。 そこで、研究の結果、Ｈ鋼柱と鋼矢板を溶接するのではなく、特殊金具で固定 する「特願平１０−２０８４８８号」があったが、これはＨ鋼柱にボルトを当て て締め上げる方法であった。つまり、ボルトの先端部分で金具とＨ鋼柱とを固定 しているので、接触面積が少ないために挟着力が乏しいと推測され、延いては鋼 矢板の滑落の危険性が危惧されていた。 そこで、溶接に依存しない方法であり、且つ確実にＨ鋼柱と鋼矢板とを連結固 定できる止め金具を開発することとなった。 「特願平１０−２０８４８８号」に基づく止め金具は、上下に横置きの鋼矢板 の間に止め金具を挟み、止め金具をボルトでＨ鋼柱に固定するものであった。止 め金具とＨ鋼柱とがボルトの先端のみで締めつけているので、接触面積が狭く十 分な摩擦力が発生しない欠点があり、全く滑落の危険性がないとは言えない。 又、ボルトが応力を保持する状態で使われているので、ボルトに無理な応力が 加わることになりボルトの破壊がないとも言えない。ボルトをハイテンションボ ルトを使用する場合はよいが、安価なボルトでは破損の恐れも懸念される。 そこで本考案に至るが、本考案の止め金具はボルトの上下に鋼矢板を横置きで 積層し、背板の溝部分にＨ鋼柱を嵌入しすることで鋼矢板をＨ鋼柱に面接触させ 、背板と当て板間にボルトを貫通させて締めつけているので、十分な接触面積を 得ることができるために非常に強力な摩擦力がある止め金具となる。 溶接に頼らない鋼矢板とＨ鋼との連結方式は、夫々の間の摩擦力を利用するも のであるので、摩擦力が強いことは各部品の滑落を解決する最も重要な要素であ る。この重要な要素を達成できた理由は、全ての点で点接触を廃止し面接触とし たことである。こうして、強力な締めつけボルトによって、各部品が滑落するこ とはなくなった。 本考案は、背板或いは当て板にＬアングル或いは相当品を使用している。この 理由に、背板或いは当て板の強度が増すここと、曲げ部分が作業者の踏み台とし ての効果が発生することである。僅かな面積ではあるが、作業者にとっては十分 に役立つ踏み台となる。 本考案は、Ｈ鋼柱の左右どちらでも使用することができる特長を有する。「特 願平１０−２０８４８８号」に基づく止め金具は、左右勝手違いを準備している が、本考案は只一種類の止め金具を製作すればよいので、製造コストを安価に押 さえることができる。又、種類が少ないことは保管等の管理が容易でもある。 実際に本考案の止め金具を使用すると、従来の溶接手段に比べて工事期間が約 １／３に短縮できることが実証された。このことは、工費の軽減ばかりでなく、 工事に伴う事故防止効果も発生し、時流に乗った工法を約束するものである。 The present invention has the following effects because it is configured as described above. In the past, emergency restoration work was carried out when a road side slope collapse accident occurred. Usually, temporary protection fences were set up at the collapsed point to respond. In this construction, steel piles (sheet piles) are horizontally stacked on the H steel columns to catch the new collapse. Conventionally, a protective fence has been set up by welding H steel and steel sheet piles, and a method of removing the welded part by gas cutting or the like at the time of withdrawal has been performed. However, in this construction, the H steel pillar suspended vertically on the road surface is required, and steel sheet piles are horizontally stacked on this span to set up a protective fence. The steel sheet piles are welded to the H steel pillars. I was forced to do a lot of hard work. At sites where urgent restoration work is required along with the occurrence of disasters, prompt restoration work is required. Was pointed out. The conventional method, in which steel sheet piles are welded one by one to the H steel column in order to finish the protective fence, has a drawback that it becomes complicated due to the routing of cables and hoses. If the weld is low, it is easy, but if it is high, the workability is inevitably reduced. Also, when the temporary protective fence is withdrawn after repairing the collapsed part, it is necessary to peel off the welded part by gas cutting or the like, but it is difficult for the welded part to peel off. For reuse, maintenance of the welded parts is required. Since the welded portion becomes a protruding portion, it is necessary to perform maintenance work on the H steel and the steel sheet pile because this portion needs to be deleted. This fact also led to a rise in labor costs due to poor workability. Therefore, as a result of research, there was “Japanese Patent Application No. Hei 10-208488” in which H steel columns and steel sheet piles are not welded but fixed with special metal fittings. Was the way. In other words, since the metal fitting and the H steel column were fixed at the tip of the bolt, the contact area was small, so it was presumed that the pinching force was poor, and there was a concern that the steel sheet pile would slide down. Therefore, a fastener that does not rely on welding and that can securely connect and fix the H steel column and the sheet pile is developed. The fastener based on "Japanese Patent Application No. 10-208488" sandwiches the fastener between steel sheet piles placed vertically one above the other, and fixes the fastener to the H steel column with bolts. Since the fastener and the H steel column are fastened only by the bolt tip, there is a disadvantage that the contact area is small and sufficient frictional force is not generated, and there is no danger of slipping. In addition, since the bolts are used in a state of retaining the stress, an excessive stress is applied to the bolts, and it cannot be said that the bolts are not broken. It is good to use high tension bolts, but there is a concern that inexpensive bolts may be damaged. Therefore, to arrive at the present invention, the fastener of the present invention is constructed by placing steel sheet piles horizontally on the top and bottom of the bolts, and fitting the steel sheet piles into the H steel pillars by inserting H steel columns into the grooves of the back plate. In this case, since the bolt is penetrated between the back plate and the backing plate and fastened, a sufficient contact area can be obtained, so that the stopper has a very strong frictional force. The connection method between steel sheet pile and H steel, which does not rely on welding, utilizes the frictional force between each steel sheet. Therefore, strong frictional force is the most important factor in solving the sliding down of each part. The reason for achieving this important factor is that point contact has been abolished in all respects and replaced by surface contact. Thus, the parts were not slipped off by the strong clamping bolts. In the present invention, an L angle or an equivalent is used for the back plate or the backing plate. The reason for this is that the strength of the back plate or backing plate is increased, and that the bent portion has the effect of serving as a step for the operator. Although it is a small area, it is a very useful step for workers. The present invention has the feature that it can be used on either the left or right side of the H steel column. Although the fasteners based on “Japanese Patent Application No. 10-208488” are prepared in different ways, the present invention requires only one type of fastener to be manufactured, so that the manufacturing cost can be reduced. it can. Further, the small number of types also facilitates management of storage and the like. Actually, it has been proved that the use of the fastener of the present invention can reduce the construction period to about 1/3 as compared with the conventional welding means. This not only reduces construction costs but also has the effect of preventing accidents associated with construction, promising a construction method that keeps up with the times.
【図１】道路斜面の崩落現場での復旧工事状況を示す斜
視図である。FIG. 1 is a perspective view showing a state of restoration work at a collapse site of a road slope.
【図２】本考案の使用時を示す平面断面図である。FIG. 2 is a plan cross-sectional view showing the use of the present invention.
【図３】本考案の第１実施例を示す斜視図である。FIG. 3 is a perspective view showing a first embodiment of the present invention.
【図４】本考案の第２実施例を示す斜視図である。FIG. 4 is a perspective view showing a second embodiment of the present invention.
【図５】本考案の第３実施例を示す斜視図である。FIG. 5 is a perspective view showing a third embodiment of the present invention.
【図６】本考案の第４実施例を示す斜視図である。FIG. 6 is a perspective view showing a fourth embodiment of the present invention.
【図７】本考案の第５実施例を示す斜視図である。FIG. 7 is a perspective view showing a fifth embodiment of the present invention.
【図８】本考案の第６実施例を示す斜視図である。FIG. 8 is a perspective view showing a sixth embodiment of the present invention.
【図９】本考案の第７実施例を示す斜視図である。FIG. 9 is a perspective view showing a seventh embodiment of the present invention.
【図１０】本考案の使用時を示す斜視図である。FIG. 10 is a perspective view showing the use of the present invention.
【図１１】本考案の使用時を示す側面断面図である。FIG. 11 is a side sectional view showing the use of the present invention.
【図１２】本考案の第８実施例を示す側面断面図であ
る。FIG. 12 is a side sectional view showing an eighth embodiment of the present invention.
【図１３】本考案の第９実施例を示す側面断面図であ
る。FIG. 13 is a side sectional view showing a ninth embodiment of the present invention.
【図１４】本考案の第１０実施例を示す側面断面図であ
る。FIG. 14 is a side sectional view showing a tenth embodiment of the present invention.
１ 道路側面 ２ Ｈ鋼 ３ 鋼矢板 ４ 土砂 ５ 背板 ６ 溝 ７ 当て板 ８ａ ボルト ８ｂ Ｕボルト ９ ナット １０ Ｌアングル １１ 平鋼 １２ 通し孔 １３ 雌ねじ １４ 止め金具 １５ 間座板 １６ 端部用止め金具 １７ 突起部 １８ 曲げ部 DESCRIPTION OF SYMBOLS 1 Road side surface 2 H steel 3 Steel sheet pile 4 Earth and sand 5 Back plate 6 Groove 7 Backing plate 8a Bolt 8b U bolt 9 Nut 10 L angle 11 Flat steel 12 Through hole 13 Female screw 14 Stopper 15 Spacer plate 16 End stop 17 Projection 18 Bend
Claims (2)
背板と組を成す互いにボルト締めする当て板とを設け、
背板の溝に嵌入したＨ鋼及び背板と当て板の間で上下に
積層する２枚の鋼矢板とを挟着固定する仮設防護柵のＨ
鋼と鋼矢板の止め金具。1. A back plate provided with a groove into which H steel is inserted, and a backing plate which forms a pair with the back plate and which is bolted to each other, are provided.
H steel of the temporary protection fence which clamps and fixes H steel fitted in the groove of the backboard and two steel sheet piles vertically stacked between the backboard and the backing plate
Steel and steel sheet pile fasteners.
脱落を防止する突起部を設けた請求項１の仮設防護柵の
Ｈ鋼と鋼矢板の止め金具。2. The H-steel and steel sheet pile stopper of the temporary protection fence according to claim 1, wherein a projection for preventing the steel sheet pile from falling off is provided on the back plate, the backing plate, or both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000008587U JP3077293U (en) | 2000-10-27 | 2000-10-27 | H steel and steel sheet pile fasteners for temporary guard fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000008587U JP3077293U (en) | 2000-10-27 | 2000-10-27 | H steel and steel sheet pile fasteners for temporary guard fence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3077293U true JP3077293U (en) | 2001-05-18 |
Family
ID=43210313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000008587U Expired - Fee Related JP3077293U (en) | 2000-10-27 | 2000-10-27 | H steel and steel sheet pile fasteners for temporary guard fence |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3077293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332304A (en) * | 2003-05-02 | 2004-11-25 | Toyo Shoko:Kk | Fixing method for steel sheet pile in protection fence, and fixing tool of steel sheet pile |
| JP2020094465A (en) * | 2018-12-15 | 2020-06-18 | 有限会社大正鉄筋工業 | Reinforcement member, and method for manufacturing reinforcement member |
-
2000
- 2000-10-27 JP JP2000008587U patent/JP3077293U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332304A (en) * | 2003-05-02 | 2004-11-25 | Toyo Shoko:Kk | Fixing method for steel sheet pile in protection fence, and fixing tool of steel sheet pile |
| JP2020094465A (en) * | 2018-12-15 | 2020-06-18 | 有限会社大正鉄筋工業 | Reinforcement member, and method for manufacturing reinforcement member |
| JP7129327B2 (en) | 2018-12-15 | 2022-09-01 | 有限会社大正鉄筋工業 | Reinforcing member and method for manufacturing reinforcing member |
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