JPH02308004A - Protection fence for road - Google Patents
Protection fence for roadInfo
- Publication number
- JPH02308004A JPH02308004A JP4427989A JP4427989A JPH02308004A JP H02308004 A JPH02308004 A JP H02308004A JP 4427989 A JP4427989 A JP 4427989A JP 4427989 A JP4427989 A JP 4427989A JP H02308004 A JPH02308004 A JP H02308004A
- Authority
- JP
- Japan
- Prior art keywords
- shelf support
- guard
- shelf
- flange
- support
- 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
- 230000004224 protection Effects 0.000 title claims abstract description 33
- 238000005452 bending Methods 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000004570 mortar (masonry) Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0476—Foundations
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0461—Supports, e.g. posts
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は一般にガードレールおよび、ガードロープと
呼ばれる道路用防護棚に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention generally relates to guardrails and road protection shelves called guard ropes.
（従来の技術）
従来の道路用防護棚は次に示す防護棚支柱をもつものが
知られている。(Prior Art) Conventional road protection shelves are known to have the following protection shelf supports.
２図（Ａ）で示す防護棚支柱は地中に埋設、または、打
込まれる基礎部分（９）とガードレールあるいは、ガー
ドロープを支持する地上部分（１０）から構成され、基
礎部分と地上部分が１連の鋼管製のものであり、該鋼管
の下部の必要な量を地中に埋設、または打込み、必要に
応じてコンクリートあるいは９モルタル等で固定し、基
礎部分とするものである。The protective shelf support shown in Figure 2 (A) consists of a foundation part (9) that is buried or driven into the ground, and an above-ground part (10) that supports the guardrail or guard rope. It is made of a series of steel pipes, and the required amount of the lower part of the steel pipe is buried or driven into the ground, and is fixed with concrete or mortar as necessary to serve as the foundation.
２図（Ｂ）で示す防護棚支柱は、ガードレールあるいは
１ガードロープを支持する防護棚支柱下端にベースプレ
ート（１１）を持つもので、地中に設置された基礎にア
ンカーボルト（１２）で固定するものである。The guard shelf support shown in Figure 2 (B) has a base plate (11) at the lower end of the guard rail or one guard rope, and is fixed to the foundation installed underground with anchor bolts (12). It is something.
（発明が解決しようとする課題）
道路用防護棚は道路交通の安全をはかるために設置され
る・ものであるが、車両の衝突、土石の崩落、雪崩によ
る衝撃によりしばしば損傷を受けるものである。(Problem to be solved by the invention) Road guard shelves are installed to ensure road traffic safety, but they are often damaged by vehicle collisions, falling rocks, and impacts from avalanches. .
この際、うけた衝撃が大きい場合には、損傷が防護棚支
柱にも及ぶので、復旧の際、防護棚支柱の交換をともな
う補修を必要とする。At this time, if the impact received is large, the damage will also extend to the guard shelf supports, so repairs will be required to replace the guard shelf supports during restoration.
しかし、従来の２図（Ａ）で示したちは、基礎部分（９
）と地上部分（１０）が１連の鋼管製のものであり、該
鋼管の下部の必要な量を地中に埋設し、または打ち込み
、必要に応じてコンクリート、モルタル等で固定し、基
礎部分としたもので補修にあたって、損傷を受けた防護
棚支柱の地中の基礎部分をとりまくコンクリート、ある
いは１モルタル等をはつり取り、防護棚支柱を撤去する
生業が必要である。However, the conventional part shown in Figure 2 (A) is the basic part (9
) and the above-ground part (10) are made of a series of steel pipes, and the required amount of the lower part of the steel pipe is buried or driven into the ground, fixed with concrete, mortar, etc. as necessary, and the foundation part For repairs, it is necessary to remove the concrete or mortar surrounding the underground foundation of the damaged guard shelf support and remove the guard shelf support.
また、あらたに防護棚支柱を設置する際にも、防護棚支
柱の下部の必要な量を基礎部分として地中に埋設、また
は打込み、必要に応じてコンクリート、あるいは１モル
タル等で固定しなければならない。Also, when installing a new guard shelf support, the necessary amount of the lower part of the guard shelf support must be buried or driven into the ground as a foundation, and fixed with concrete or mortar as necessary. No.
一般に、はつり作業は騒音、振動、塵埃をともなうので
環境にあたえる影響が大きく、シかも、コンクリート、
モルタルは打設後必要強度に達するのに相当な時間を要
し復旧には長い時間がかがるという不便があり、打ち込
みの場合には専用打ち込み機械が必要である。In general, chisel work is accompanied by noise, vibration, and dust, which has a large impact on the environment.
Mortar has the inconvenience that it takes a considerable amount of time to reach the required strength after pouring, and it takes a long time to recover, and a special driving machine is required for driving.
また、２図（Ｂ）で示した防護棚支柱はガードレール、
あるいは、ガードロープを支持する地上部分の下端にベ
ースプレート（１１）を持ち、地中に設置された基礎に
アンカーボルト（１２）で固定するので、防護棚支柱の
取り付けに先立ってアンカーボルトをベースプレートに
設けられた取付は孔に一致するように精度よく配置しな
ければならず１作業が繁雑であるという不便があった。In addition, the protective shelf support shown in Figure 2 (B) is a guardrail,
Alternatively, the base plate (11) is attached to the lower end of the above-ground part that supports the guard rope, and is fixed to the foundation installed in the ground using the anchor bolt (12). The provided mounting has to be placed with high accuracy so as to match the hole, which is inconvenient as the work is complicated.
さらにまた、防護棚支柱に過大な衝撃が加えられアンカ
ーボルト（１２）が損傷を受けた場合には、補修にあた
って、前述のＡの場合と同様に、損傷を受けたアンカー
ボルト付近のコンクリート。Furthermore, if an excessive impact is applied to the guard shelf support and the anchor bolt (12) is damaged, the concrete near the damaged anchor bolt should be repaired in the same way as in case A above.
あるいは９モルタル等をはつり取る作業が必要であり、
あらたにアンカーボルトを設置する際にも、コンクリー
ト、あるいは１モルタル等で固定しなければならない。Alternatively, it is necessary to remove mortar etc.
When installing new anchor bolts, they must be fixed with concrete or mortar.
はつり作業は騒音、振動、塵埃をともなうので環境にあ
たえる影響が大きく、コンクリート、モルタルは打設後
必要強度に達するのに相当な時間を要するので復旧には
長い時間がかがるという不便も同様である。Chilling work is accompanied by noise, vibration, and dust, which has a large impact on the environment.Concrete and mortar also take a considerable amount of time to reach the required strength after being poured, so it is also inconvenient that restoration takes a long time. It is.
さらに、防護棚支柱が衝撃によって損傷を受ける場合の
うちの多くは、損傷が地中の基礎部分にまで及ばないの
で、防護棚支柱が損傷を受けるたびに基礎部分を含めた
補修をするということは不経済でもある。Furthermore, in most cases where a guard shelf support is damaged by impact, the damage does not extend to the underground foundation, so whenever a guard shelf support is damaged, the foundation must be repaired. is also uneconomical.
また、積雪の多い地域で積雪期に通行を停止し。Also, in areas with heavy snowfall, roads are closed during the snowy season.
閉鎖する道路において、雪崩に、よって防護棚の損傷が
予想される場合、容易に防護棚支柱ごと取り外して保管
できると便利である。When a protective shelf is expected to be damaged by an avalanche on a closed road, it would be convenient if the protective shelf supports could be easily removed and stored.
（課題を解決するための手段）
道路用防護１ｍ（１）において、設置した際に地上に位
置し、結合させるに支障のない可能な限り低い地点（２
）で防護棚支柱を軸方向に対し垂直または、ほぼ垂直な
面で分割し１分割した該防護棚支柱上部（３）下端およ
び、該防護棚支柱下部（４）上端に各々１個のフランジ
を設け、防護棚支柱上部下端のフランジ（５）と防護棚
支柱下部上端のフランジ（６）とを雄ネジと雌ネジの組
合せ（７）で結合させることにより１個の防護棚支柱を
構成させる。(Means for solving the problem) In the road protection 1m (1), the lowest possible point (2
), the guard shelf support is divided in a plane perpendicular or almost perpendicular to the axial direction, and one flange is attached to each of the lower end of the upper part (3) of the divided guard shelf support and the upper end of the lower part (4) of the guard shelf support. The flange (5) at the lower end of the upper part of the guard shelf support and the flange (6) at the upper end of the lower part of the guard shelf support are connected by a combination (7) of male and female threads to form one guard shelf support.
あるいは、道路用防護棚（１）において、設置した際に
地上に位置し、結合させるに支障のない可能な限り低い
地点（２）で防護棚支柱を軸方向に対し垂直または、ほ
ぼ垂直な面で分割し７分割した該防護棚支柱下部（４）
を耐曲げ強度が該防護棚支柱上部（３）の耐曲げ強度よ
り大きい防護棚支柱材料下部（８）に置換し、該防護棚
支柱上部下端および、該防護棚支柱下部上端に各々１個
のフランジを設け、防護棚支柱上部下端のフランジ（５
）と防護棚支柱下部上端のフランジ（６）とを雄ネジと
雌ネジの組合せ（７）で結合させること、により１個の
防護棚支柱を構成させる。Alternatively, in the road protection shelf (1), the protection shelf support can be installed in a plane perpendicular or almost perpendicular to the axial direction at the lowest possible point (2) that is located on the ground when installed and does not hinder the connection. The lower part of the protective shelf support (4) divided into 7 parts
is replaced with a lower part of the guard shelf support material (8) whose bending strength is greater than the bending strength of the upper part of the guard shelf support (3), and one piece is placed at the lower end of the upper part of the guard shelf support and at the upper end of the lower part of the guard shelf support. A flange (5
) and the flange (6) at the upper end of the lower part of the guard shelf support are connected by a combination of male and female screws (7) to form one guard shelf support.
また、設置した際に地上に位置し、結合させるに支障の
ない可能な限り低い地点（２）で防護棚支柱を軸方向に
対し垂直または、ほぼ垂直な面で分割し９分割した該防
護棚支柱上部（３）下端および、該防護棚支柱下部（４
）上端に各々１個のフランジを設け、防護棚支柱上部下
端のフランジ（５）と防護棚支柱下部上端のフランジ（
６）とを雄ネジと雌ネジの組合せ（７）で結合させるこ
とにより１個の防護棚支柱を構成させることを特徴とす
る道路用防護棚を使用する工法を用いる。In addition, at the lowest possible point (2) that is located on the ground when installed and does not interfere with joining, the protective shelf support is divided into 9 parts by a plane perpendicular or almost perpendicular to the axial direction. The lower end of the upper pillar (3) and the lower end of the protective shelf pillar (4)
) One flange is provided at each upper end, flange (5) at the lower end of the upper part of the guard shelf support and flange (5) at the upper end of the lower part of the guard shelf support.
A construction method using a road protection shelf is used, which is characterized in that a single protection shelf support is constructed by connecting 6) with a combination of male and female screws (7).
（作用）
本案の道路用防護棚は、設置した際に地上に位置し、結
合させるに支障のない可能な限り低い地点で防護棚支柱
を軸方向に対し垂直または、ほぼ垂直な面で分割し１分
割した該防護棚支柱上部下端および、該防護棚支柱下部
上端に各々１個のフランジを設け、防護棚支柱上部下端
のフランジと防護棚支柱下部上端のフランジとを雄ネジ
と雌ネジの組合せで結合させることができる防護棚支柱
をもつもので、新設の場合には、設置に先立ち。(Function) The proposed road protection shelf is located on the ground when installed, and the protection shelf support is divided by a plane perpendicular or nearly perpendicular to the axial direction at the lowest possible point that does not impede connection. One flange is provided at the lower end of the upper part of the divided guard shelf support and the upper end of the lower part of the guard shelf support, and the flange at the lower end of the upper part of the guard shelf support and the flange at the upper end of the lower part of the guard shelf support are connected by a combination of male and female threads. It has a protective shelf support that can be combined with the following, and in the case of new construction, prior to installation.
防護棚支柱上部下端のフランジと防護棚支柱下部上端の
フランジとを雄ネジと雌ネジの組合せで結合させておく
ことにより従来の道路用防護棚と同様の方法により施工
ができる。By connecting the flange at the lower end of the upper part of the guard shelf support and the flange at the upper end of the lower part of the guard shelf support with a combination of male and female threads, construction can be performed in the same manner as conventional road protection shelves.
また、防護棚支柱が衝撃によって損傷し、損傷が防護棚
支柱下部に及ばない場合には、フランジの結合を解き、
防護棚支柱上部のみを取替ることができる。In addition, if the protective shelf support is damaged by impact and the damage does not extend to the bottom of the protective shelf support, uncouple the flanges,
Only the upper part of the guard shelf support can be replaced.
防護棚の製作にあたって１分割した防護棚支柱下部を耐
曲げ強度が防護棚支柱上部の耐曲げ強度より充分に大き
い防護棚支柱材料に置換することで、防護棚支柱が衝撃
を受けた場合に、専ら防護棚支柱上部が衝撃を吸収して
、防護棚支柱下部を衝撃による損傷から守ることができ
る。When manufacturing the guard shelf, by replacing the lower part of the divided guard shelf support with a guard shelf support material whose bending strength is sufficiently greater than the bending strength of the upper part of the guard shelf support, when the guard shelf support receives an impact, The upper part of the protective shelf support absorbs the impact exclusively, and the lower part of the protective shelf support can be protected from damage caused by the impact.
また、積雪の多い地域で積雪期に通行を停止し。Also, in areas with heavy snowfall, roads are closed during the snowy season.
閉鎖する道路において、雪崩によって防護棚の損傷が予
想されるに場合、防護棚支柱に設けられたフランジの結
合を解き、容易に防護棚支柱根元部分より取り外して保
管できるので、雪崩による防護棚支柱の損傷が防止でき
、除雪の際にも防護棚体および支柱が作業の障害となる
ことなく便利である。（実施例）
３図（Ｃ）、（Ｄ）、（Ｅ）は本案の道路用防護棚の実
施例である。If the protection shelf is expected to be damaged by an avalanche on a closed road, the flange on the protection shelf support can be uncoupled and easily removed from the base of the protection shelf support and stored, so that the protection shelf support can be easily removed from the base of the protection shelf support and stored. damage to the snow can be prevented, and the protective shelves and supports do not interfere with snow removal, making them convenient. (Example) Figures 3 (C), (D), and (E) are examples of the road protection shelf of the present invention.
（Ｃ）は防護棚支柱下部に腐蝕に強い支柱材料（１３）
を使用し、防護棚支柱上部に通常の鋼管（１４）を使用
したものである。(C) is a corrosion-resistant support material (13) at the bottom of the protective shelf support.
A normal steel pipe (14) is used for the upper part of the protective shelf support.
一般に防護棚支柱の地面に接する部分は他の部分に比較
して激しい腐蝕を受けるものであり、耐腐蝕性の支柱材
料は高価であるが、このことにより、防護棚支柱の耐蝕
性の向上と経済性を満足させることができる。Generally, the part of a guard shelf support that touches the ground is subject to more severe corrosion than other parts, and corrosion-resistant support materials are expensive, but this improves the corrosion resistance of the guard shelf support. Economic efficiency can be satisfied.
（Ｄ）は防護棚支柱下部に型鋼材（１５）を使用し、防
護棚支柱上部に通常の鋼管（１４）を使用したものであ
る。防護棚支柱下部は衝撃に強く。In (D), a shaped steel material (15) is used for the lower part of the guard shelf support, and a normal steel pipe (14) is used for the upper part of the guard shelf support. The lower part of the protective shelf support is strong against impact.
防護棚支柱上部は衝撃に対して柔軟であり、しかも、鋭
い角や突起がなく安全である。The upper part of the protective shelf support is flexible against impact and is safe without sharp corners or protrusions.
（Ｅ）は道路の補修にともなう道路面の上昇に対処する
ために防護棚支柱上部下端のフランジと防護棚支柱下部
上端のフランジ間にスペーサー（１６）を挿入した例で
ある。(E) is an example in which a spacer (16) is inserted between the flange at the lower end of the upper part of the guard shelf support and the flange at the upper end of the lower part of the guard shelf support in order to cope with the rise in the road surface due to road repair.
路面の上昇に見合ったスペーサーを挿入することで、路
面と防護棚体の関係を適正に保つことができ、路面の上
昇後も防護棚の機能を維持できるものである。By inserting spacers commensurate with the rise of the road surface, the relationship between the road surface and the protective shelf can be maintained appropriately, and the function of the protective shelf can be maintained even after the road surface has risen.
（発明の効果）道路の安全施設である道路用防護棚はそ
の目的のため、必要な箇所はど度々損傷を受けるもので
あり、同様の理由で復旧が急がれるものである。(Effects of the Invention) Due to the purpose of the road protection shelf, which is a road safety facility, necessary parts are frequently damaged, and restoration is urgently needed for the same reason.
道路用防護棚補修作業において１作業全体に対する防護
棚支柱交換に要する作業の比率は大きいものであり、防
護棚支柱交換を迅速に行うことが安全確保の面からも重
要である。In road protection shelf repair work, the ratio of work required to replace the protection shelf support to the entire work is large, and it is important from the viewpoint of ensuring safety to quickly replace the protection shelf support.
本案の道路用防護棚、および道路用防護棚を使用する工
法は、設置時の簡便性、補修時の迅速性。The proposed road protection shelf and the construction method using the road protection shelf are easy to install and quick to repair.
および経済性、その他の点で従来の道路用防護棚になり
かた利便をもたらしたものである。It is more convenient than a conventional road protection shelf in terms of economic efficiency and other aspects.
１図は本案による防護棚および、防護棚支柱の斜視図で
ある。
２図は従来の技術による防護棚および、防護棚支柱の斜
視図である。
３図は本案の実施例を示す斜視図である。
（１）道路用防護槽
（２）支柱の結合させるに支障のない可能な限り低い地
点
（３）防護棚支柱上部
（４）防護棚支柱下部
（５）支柱上部下端のフランジ
（６）支柱下部上端のフランジ
（７）雄ネジと雌ネジの組合せ
（８）耐曲げ強度が支柱上部より大きい支柱材料による
支柱下部
（９）支柱地中基礎部分
（ｌＯ）支柱地上部分
（１１）ベースプレート
（１２）アンカーボルト
（１３）腐蝕に強い支柱材料
（１４）通常の鋼管
（１５）型鋼材
（１６）スペーサー
（１７）地面FIG. 1 is a perspective view of a guard shelf and a guard shelf support column according to the present invention. FIG. 2 is a perspective view of a conventional protective shelf and a protective shelf support column. FIG. 3 is a perspective view showing an embodiment of the present invention. (1) Road protection tank (2) The lowest possible point where there is no problem in joining the supports (3) Upper part of the support shelf support (4) Lower part of the support shelf support (5) Flange at the lower end of the upper support support (6) Lower part of the support support Upper end flange (7) Combination of male and female threads (8) Lower part of the support made of a support material with higher bending strength than the upper part of the support (9) Underground foundation part of the support (IO) Above ground part of the support (11) Base plate (12) Anchor bolt (13) Corrosion-resistant support material (14) Ordinary steel pipe (15) Type steel material (16) Spacer (17) Ground
Claims (1)
位置し、結合させるに支障のない可能な限り低い地点（
２）で防護棚支柱を軸方向に対し垂直または、ほぼ垂直
な面で分割し、分割した該防護棚支柱上部（３）下端お
よび、該防護棚支柱下部（４）上端に各々１個のフラン
ジを設け、防護棚支柱上部下端のフランジ（５）と防護
棚支柱下部上端のフランジ（６）とを雄ネジと雌ネジの
組合せ（７）で結合させることにより１個の防護棚支柱
を構成させることを特徴とする道路用防護棚。 ２、道路用防護棚（１）において、設置した際に地上に
位置し、結合させるに支障のない可能な限り低い地点（
２）で防護棚支柱を軸方向に対し垂直または、ほぼ垂直
な面で分割し、分割した該防護棚支柱下部（４）を耐曲
げ強度が該防護棚支柱上部（３）の耐曲げ強度より大き
い防護棚支柱材料による支柱下部（８）に置換し、該防
護棚支柱上部下端および、該防護棚支柱下部上端に各々
１個のフランジを設け、防護棚支柱上部下端のフランジ
（５）と防護棚支柱下部上端のフランジ（６）とを雄ネ
ジと雌ネジの組合せ（７）で結合させることにより１個
の防護棚支柱を構成させることを特徴とする道路用防護
棚。 ３、設置した際に地上に位置し、結合させるに支障のな
い可能な限り低い地点（２）で防護棚支柱を軸方向に対
し垂直または、ほぼ垂直な面で分割し、分割した該防護
棚支柱上部（３）下端および、該防護棚支柱下部（４）
上端に各々１個のフランジを設け、防護棚支柱上部下端
のフランジ（５）と防護棚支柱下部上端のフランジ（６
）とを雄ネジと雌ネジの組合せ（７）で結合させること
により１個の防護棚支柱を構成させることを特徴とする
道路用防護棚を使用する工法[Claims] 1. In the road protection shelf (1), the lowest possible point (
In step 2), the guard shelf support is divided in a plane perpendicular or substantially perpendicular to the axial direction, and one flange is attached to each of the lower end of the divided guard shelf support upper part (3) and the upper end of the divided guard shelf support lower part (4). The flange (5) at the lower end of the upper part of the guard shelf support and the flange (6) at the upper end of the lower part of the guard shelf support are connected by a combination of male and female threads (7) to form one guard shelf support. A road protection shelf characterized by: 2. For the road protection shelf (1), the lowest possible point that is located above the ground when installed and does not pose a problem for connection (
In step 2), the guard shelf support is divided in a plane perpendicular or almost perpendicular to the axial direction, and the bending strength of the divided lower part of the guard shelf support (4) is higher than the bending strength of the upper part of the guard shelf support (3). The lower part of the support shelf (8) is replaced with a large guard shelf support material, and one flange is provided at the lower end of the upper part of the guard shelf support and one flange is provided at the lower end of the lower part of the guard shelf support, and the flange (5) at the lower end of the upper part of the guard shelf support is connected to the flange (5) at the lower end of the upper part of the guard shelf support. A road protection shelf characterized in that one protection shelf support is constructed by connecting a flange (6) at the upper end of the lower part of the shelf support with a combination (7) of male and female threads. 3. At the lowest possible point (2) that is located on the ground when installed and does not pose a problem for joining, the guard shelf support is divided in a plane perpendicular or almost perpendicular to the axial direction, and the divided guard shelf The lower end of the upper part of the pillar (3) and the lower end of the protective shelf pillar (4)
One flange is provided at each upper end, flange (5) at the lower end of the upper part of the guard shelf support and flange (6) at the upper end of the lower part of the guard shelf support.
) are combined with a combination of male and female screws (7) to form one guard shelf support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4427989A JPH02308004A (en) | 1989-02-25 | 1989-02-25 | Protection fence for road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4427989A JPH02308004A (en) | 1989-02-25 | 1989-02-25 | Protection fence for road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02308004A true JPH02308004A (en) | 1990-12-21 |
Family
ID=12687071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4427989A Pending JPH02308004A (en) | 1989-02-25 | 1989-02-25 | Protection fence for road |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02308004A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809733A (en) * | 1994-01-10 | 1998-09-22 | Venegas, Jr.; Frank | Rotating guard rail assembly |
| JP2008063931A (en) * | 2006-08-07 | 2008-03-21 | Fm Railing Kk | Replacing construction method of protective fence for existing bridge |
| JP2018025007A (en) * | 2016-08-09 | 2018-02-15 | Ｊｆｅ建材株式会社 | Columnar support structure and tsunami barrier |
-
1989
- 1989-02-25 JP JP4427989A patent/JPH02308004A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809733A (en) * | 1994-01-10 | 1998-09-22 | Venegas, Jr.; Frank | Rotating guard rail assembly |
| JP2008063931A (en) * | 2006-08-07 | 2008-03-21 | Fm Railing Kk | Replacing construction method of protective fence for existing bridge |
| JP2018025007A (en) * | 2016-08-09 | 2018-02-15 | Ｊｆｅ建材株式会社 | Columnar support structure and tsunami barrier |
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