JP2020169545A

JP2020169545A - Foundation block for guard fence

Info

Publication number: JP2020169545A
Application number: JP2019080507A
Authority: JP
Inventors: 晃司草竹; Koji Kusatake; 哉仁頼田; Yahito Yorita
Original assignee: KUSATAKE CONCRETE KOGYO KK
Current assignee: KUSATAKE CONCRETE KOGYO KK
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-10-15
Anticipated expiration: 2039-04-03
Also published as: JP6587084B1

Abstract

To provide a foundation block for guard fence that does not deform or fluctuate by improving the connection performance between the foundation blocks of the guard fence, such as a guardrail, and withstanding a collision force that acts on and propagates through the guard fence.SOLUTION: A foundation block 1 comprises a filling block 20 with bolt insertion holes vertically provided in the center, and bolts 30. With a convex part 7 on an other side of one block body 2 contacting a segmental recess part 5 on one side of an other block body 2, the lower end of an U-shaped rod 6 on one side is placed on the upper end face of a semicircular convex part, and is joined with an insert nut on the upper end face facing inward at the top. In the void space where the one side and the other side of the segmental recess part 5 face each other, the lower face of the recess part is placed on the upper end of the U-shaped rod 6. The filling block 20 is fitted with the outer peripheral surface close to the segmental recess part 5. The block bodies 2 at each connection interval L are joined to each other with the bolts 30 inserted into the bolt insertion holes of the filling block 20 screwed to the insert nuts on the upper end face.SELECTED DRAWING: Figure 1

Description

本発明は、防護柵、更に詳しくは、ガードパイプ、ガードレール、ガードケーブル等を道路端に沿わせて設置する際、その支柱を建て込んで使用するコンクリート製で連結型の基礎ブロックに関するものである。 The present invention relates to a concrete, articulated foundation block used by building a support fence when a guard fence, more specifically, a guard pipe, a guard rail, a guard cable, etc. is installed along the road edge. ..

従来、この種の連結型基礎ブロックは、道路端に沿わせるブロックの長さ方向両端において相互を連結するのが常套で、例えば、下記の特許文献１に記載されているように、Ｕ字状のフックとボルト、インサートナットを用いた連結構造とそれ用のブロックがある。 Conventionally, this type of connected foundation block is conventionally connected to each other at both ends in the length direction of the block along the road edge. For example, as described in Patent Document 1 below, it has a U shape. There is a connection structure using hooks, bolts, and insert nuts, and a block for it.

特許第４９４９５３０号Patent No. 4949530

しかしながら、特許文献１に記載の発明は、断面略矩形の細長い棒状体の長手方向一端部に半円筒凸部、同他端部に半円筒凹部を夫々鉛直方向に設け、半円筒凸部に側面視台形の切込みを設け、又、該切込みに対向する位置の半円筒凹部にＵ字状フックを突設してなるブロック同士を、その一端部と他端部を対向させた上、半円筒凸部の切込み内でその上方からのボルトで半円筒凹部からのＵ字状のフック先端を係止して連結するものである。
ここで、その連結形態は、ボルト位置を軸心として形成される半円筒凸部と半円筒凹部の半径が夫々異なってなり（凸部半径＜凹部半径）、又、ボルトで係止されたＵ字状フックが側面視台形の切込みと接することなく浮遊状態にある。
即ち、当該連結構造とそれ用のブロックは、ブロック同士を直接的に嵌合又は接合させることなく相互間に隙間を保持し、且つ、連結フック周辺にも遊びを設けるもので、これによって連結したブロックに鉛直軸回り、水平軸回り及びねじり方向の角度に夫々自由度を付すことができ、ガードレールから伝達される衝撃に対して連結設置したブロックの変位を許容するものであるために、本来の基礎構造体に求められる不動性や不変性に劣るという問題点があった。
本発明は、かかる従来の問題点に鑑みてなされたものであって、ブロック同士の連結性能を高め、防護柵に作用して伝播する衝突力に耐えて、変形、変動しない防護柵用の基礎ブロックを提供することを課題としている。However, in the invention described in Patent Document 1, a semi-cylindrical convex portion is provided at one end in the longitudinal direction of an elongated rod-shaped body having a substantially rectangular cross section, and a semi-cylindrical concave portion is provided at the other end in the vertical direction. A semi-cylindrical convex is provided with a viewing trapezoidal notch, and blocks formed by projecting a U-shaped hook into a semi-cylindrical recess at a position facing the notch, with one end and the other end facing each other. The tip of the U-shaped hook from the semi-cylindrical recess is locked and connected with a bolt from above in the notch of the portion.
Here, in the connection form, the radius of the semi-cylindrical convex portion and the semi-cylindrical concave portion formed with the bolt position as the axis are different from each other (convex portion radius <concave radius), and the U is locked by the bolt. The shaped hook is floating without contacting the side view trapezoidal notch.
That is, the connecting structure and the block for it hold a gap between the blocks without directly fitting or joining the blocks, and also provide a play around the connecting hook, thereby connecting the blocks. Since the blocks can be given degrees of freedom around the vertical axis, around the horizontal axis, and in the twisting direction, and allow the blocks installed connected to be displaced with respect to the impact transmitted from the guard rail, the original There was a problem that it was inferior to the immobility and immutability required for the basic structure.
The present invention has been made in view of such conventional problems, and is a foundation for a protective fence that does not deform or fluctuate by improving the connection performance between blocks, withstanding the collision force that acts on the protective fence and propagates. The challenge is to provide blocks.

上記課題を解決するために、本発明の防護柵用の基礎ブロックは、請求項１記載の如く、その上面に支柱孔を適宜設けるとともに長さ方向の両端部を連結し、道路端に沿わせて連続的に設置する防護柵用の基礎ブロックであって、矩形棒状体の幅中央でその長さ方向を向く横軸上にあり、且つ、該長さ方向での矩形棒状体の両端面から夫々同長さで延伸して両端面を跨ぐ位置にある高さ方向の縦軸間をブロックの連結間隔とし、両端面は夫々縦軸を中心とした円弧面が高さ方向に向けた欠円状凹部となされ、高さ方向の全域に渡る片側の欠円状凹部に平面視でその頂部内方を前記縦軸に近接せしめたＵ字杆を突設し、又、他側の欠円状凹部を高さ方向の上部に残存してその下部に幅方向に渡り設けられる凸部の突端が、平面視で前記縦軸を中心とし、且つ、欠円状凹部と略同一の円弧面からなる半円形凸部であり、該凸部の上端面の高さが前記Ｕ字杆の下端と略合致し、又、上端面の前記縦軸位置にインサートナットを埋設してなるブロック本体と、前記欠円状凹部と半円形凸部の円弧面と略合致するとともに、前記矩形棒状体の上面からＵ字杆の上端に至る高さを有する円筒体で、その円弧中心部にボルト挿通孔を縦設してなる中詰ブロックと、ボルトとからなり、連結間隔毎のブロック本体同士が、一方のブロック本体にある他側の半円形凸部に他方のブロック本体にある片側の欠円状凹部が当接した状態で、且つ、半円形凸部の上端面に片側のＵ字杆の下端を載置させるとともに、その頂部内方に上端面のインサートナットを臨ませた状態で接合され、他側及び片側の欠円状凹部が対向した状態の空所に、その下面をＵ字杆の上端に載置し、且つ、その外周面を前記欠円状凹部に近接させた状態で中詰ブロックが嵌合され、中詰ブロックのボルト挿通孔に挿入した状態のボルトが、上端面のインサートナットに螺合締結した状態で連結されてなるものである。 In order to solve the above problems, as described in claim 1, the foundation block for the protective fence of the present invention is provided with column holes as appropriate on the upper surface thereof, and both ends in the length direction are connected so as to follow the road edge. It is a foundation block for a guard fence to be continuously installed, and is located on the horizontal axis facing the length direction at the center of the width of the rectangular rod-shaped body, and from both end faces of the rectangular rod-shaped body in the length direction. The vertical axis in the height direction, which is stretched to the same length and straddles both end faces, is the block connection interval, and both end faces are missing circles in which the arcuate surface centered on the vertical axis faces the height direction. A U-shaped rod is formed as a concave recess on one side over the entire height direction, and a U-shaped rod having the inside of the top thereof close to the vertical axis in a plan view is projected, and the circular recess on the other side is formed. The tip of the convex portion that remains in the upper part in the height direction and is provided in the lower part in the width direction is centered on the vertical axis in a plan view and is formed of an arc surface substantially the same as the missing circular concave portion. A block body which is a semicircular convex portion, the height of the upper end surface of the convex portion substantially matches the lower end of the U-shaped rod, and an insert nut is embedded in the vertical axis position of the upper end surface, and the above. A cylindrical body that substantially matches the arc surface of the missing circular concave portion and the semicircular convex portion and has a height from the upper surface of the rectangular rod-shaped body to the upper end of the U-shaped rod, and has a bolt insertion hole vertically at the center of the arc. It consists of a filling block and bolts, and the block bodies at each connection interval have a semi-circular convex part on the other side of one block body and a missing circular recess on one side of the other block body. In a state of contact, the lower end of the U-shaped rod on one side is placed on the upper end surface of the semicircular convex portion, and the insert nut on the upper end surface is faced inward of the top of the lower end. In a vacant space where the missing circular recesses on one side face each other, the filling block is placed in a state where the lower surface thereof is placed on the upper end of the U-shaped rod and the outer peripheral surface thereof is close to the missing circular recesses. The bolts that are fitted and inserted into the bolt insertion holes of the filling block are connected to the insert nut on the upper end surface in a screwed state.

上記構成の基礎ブロックでは、その本連結に先立つブロック本体同士の端面接合が欠円状凹部と半円形凸部の安定した円弧面当接で、直線状や曲線状、屈曲状等、道路端への設置形態に相応して縦軸回りに適宜調整可能であることを前提として、両端面接合後の空所への中詰ブロックの嵌合にあっては、該空所の側面たる両欠円状凹部の円弧面と中詰ブロックの外周面が略合致するとともに、ブロック本体の凸部の上端面と中詰ブロックの下面との間に介在するＵ字杆を、その上端面と下面で挟み込みボルト締結で強圧して本連結するために、当該連結がボルト締結力による安全且つ強固な摩擦接合状態となる。 In the basic block having the above configuration, the end face joint between the block bodies prior to the main connection is a stable arc surface contact between the missing circular concave portion and the semicircular convex portion, to the road end such as a straight line, a curved line, or a bent shape. On the premise that it can be adjusted appropriately around the vertical axis according to the installation form of the vacant space, when fitting the filling block into the vacant space after joining both end faces, both missing circles on the side surface of the vacant space The arcuate surface of the concave portion and the outer peripheral surface of the filling block substantially match, and a U-shaped rod interposed between the upper end surface of the convex portion of the block body and the lower surface of the filling block is sandwiched between the upper end surface and the lower surface. Since the main connection is made by strongly pressing the bolts, the connection is in a safe and strong frictional joint state due to the bolt fastening force.

又、本発明の防護柵用の基礎ブロックは、請求項２記載の如く、請求項１の中詰ブロックがその下面に突起を有する側面視逆凹形で、該凹形を形成する凹陥部にＵ字杆が嵌合した状態で収納されているものである。
上記構成の基礎ブロックでは、凹陥部に嵌合するＵ字杆の幅方向両側端も接合部になるとともに、中詰ブロックの回動を防止する。Further, as described in claim 2, the foundation block for the protective fence of the present invention has a side view inverted concave shape in which the filling block of claim 1 has a protrusion on the lower surface thereof, and is formed in a concave portion forming the concave shape. It is stored with the U-shaped rod fitted.
In the foundation block having the above configuration, both ends in the width direction of the U-shaped rod fitted in the recessed portion also serve as joint portions, and the filling block is prevented from rotating.

更に、本発明の防護柵用の基礎ブロックは、請求項３記載の如く、請求項１又は２の矩形棒状体の側面の一側又は両側に、その下端部に連設するとともに幅方向に外突出して長さ方向に渡る底板が設けられているものである。
上記構成の基礎ブロックでは、底板の上面を路盤材下に配置することができる。Further, as described in claim 3, the foundation block for the protective fence of the present invention is connected to one side or both sides of the side surface of the rectangular rod-shaped body of claim 1 or 2 at the lower end thereof and is outward in the width direction. A bottom plate that protrudes and extends in the length direction is provided.
In the foundation block having the above configuration, the upper surface of the bottom plate can be arranged under the roadbed material.

本発明の防護柵用の基礎ブロックでは、空所内にボルトで強圧固定した中詰ブロックの外周面と両欠円状凹部及び中詰ブロックの下面とＵ字杆の上端、又、Ｕ字杆の下端と凸部の上端面が、夫々密接した強固な摩擦接合状態となるために、その使用においては、防護柵から伝播して作用する衝撃力に対しても変形、変動等することがない頑丈な基礎構造体となる。
又、本発明の防護柵用の基礎ブロックでは、Ｕ字杆の幅方向両側端が中詰ブロック下面の凹陥部に嵌合して接合部位が増大するために、中詰ブロックの回動防止と併せて更に強固な摩擦接合状態となる。
更に、本発明の防護柵用の基礎ブロックでは、矩形棒状体の側面の一側又は両側に底板を設けているため、その使用において、底板が路盤材下に埋設されることで、路盤材や通行車両による上載荷重を安定荷重として得ることができる。In the foundation block for the protective fence of the present invention, the outer peripheral surface of the filling block firmly fixed by bolting in a vacant space, the double-sided circular recess, the lower surface of the filling block, the upper end of the U-shaped 杆, and the U-shaped 杆Since the lower end surface and the upper end surface of the convex part are in a close and strong frictional joint state, when used, they are sturdy and do not deform or fluctuate even with the impact force propagating from the protective fence. It becomes a basic structure.
Further, in the foundation block for the protective fence of the present invention, both ends in the width direction of the U-shaped rod are fitted into the recessed portion on the lower surface of the filling block to increase the joint portion, so that the filling block cannot be rotated. At the same time, it becomes a stronger frictional joint state.
Further, in the foundation block for the protective fence of the present invention, since the bottom plate is provided on one side or both sides of the side surface of the rectangular rod-shaped body, in its use, the bottom plate is embedded under the roadbed material, so that the roadbed material or The loading load of a passing vehicle can be obtained as a stable load.

本発明の実施形態に係る防護柵用の基礎ブロックの使用（連結）状態を示す一部斜視図。The partial perspective view which shows the use (connection) state of the foundation block for the guard fence which concerns on embodiment of this invention. 同実施形態のブロック本体を示し、（イ）は正面図、（ロ）は平面図、（ハ）は左側面図、（ニ）は右側面図、（ホ）は（イ）のＡ−Ａ断面図。The block main body of the same embodiment is shown, (a) is a front view, (b) is a plan view, (c) is a left side view, (d) is a right side view, and (e) is AA of (a). Sectional view. 同実施形態の中詰ブロックを示し、（イ）は正面図、（ロ）は平面図。The filling block of the same embodiment is shown, (a) is a front view, and (b) is a plan view. 同実施形態の連結状態を示す一部斜視図。A partial perspective view showing a connected state of the same embodiment. （イ）は図４のア部拡大図、（ロ）は図４のＢ−Ｂ拡大断面図、（ハ）は図４のＣ−Ｃ拡大断面図。(A) is an enlarged view of part A in FIG. 4, (b) is an enlarged sectional view of BB in FIG. 4, and (c) is an enlarged sectional view of CC in FIG. 本発明の他実施形態に係る中詰ブロックを示し、（イ）は正面図、（ロ）は平面図、（ハ）は底面図、（ニ）は（イ）のＤ−Ｄ断面図。The filling block according to another embodiment of the present invention is shown, (a) is a front view, (b) is a plan view, (c) is a bottom view, and (d) is a DD sectional view of (a). 同他実施形態の中詰ブロックを示し、（イ）は使用状態を示す一部斜視図、（ロ）は（イ）のＥ−Ｅ拡大断面図。The filling block of the same other embodiment is shown, (a) is a partial perspective view showing a usage state, and (b) is an enlarged sectional view of EE of (a). 本発明の他実施形態に係るブロック本体を示し、（イ）は正面側斜視図、（ロ）は背面側斜視図、（ハ）は更に他のブロック本体を示す正面側斜視図。A block body according to another embodiment of the present invention is shown, (a) is a front side perspective view, (b) is a back side perspective view, and (c) is a front side perspective view showing another block body.

以下、図面を参照しながら本発明の実施形態について説明する。
図１乃至図５は、本発明の基礎ブロックに係る実施形態を示し、主体をコンクリート製となす基礎ブロック１は、連続する防護柵５０の基礎構造体をなすべく、道路端に沿わせてその長さ方向の両端を連結し、且つ、その上面３ａを路面Ｇに揃えて路盤に埋設するものである。
基礎ブロック１を構成するブロック本体２は、図２に示すように、断面が長方形の細長い矩形棒状体３の幅Ｗ中央でその長さ方向を向く横軸Ｘ上にあるとともに、該長さ方向での矩形棒状体３の両端面４、４から夫々同長さで延伸して両端面４、４を跨ぐ位置にある高さ方向Ｈの縦軸Ｙ、Ｙ間をブロックの連結間隔Ｌとする。
矩形棒状体３の上面３ａの略中央に防護柵５０の支柱５１を建て込む支柱孔１０を設け、両端面４、４を、前記縦軸Ｙを中心としたそれぞれが同一の円弧面で高さ方向Ｈに向けた欠円状凹部５、５とし、高さ方向Ｈの全域に渡る片側の欠円状凹部５の適宜高さ位置に、平面視でその頂部内方６ａを前記縦軸Ｙに近接せしめたＵ字杆６を突設する。
又、他側の欠円状凹部５を高さ方向Ｈの上部に残存してその下部に幅Ｗ方向に渡り設けられる凸部７の突端を、平面視で前記縦軸Ｙを中心にするとともに、欠円状凹部５と略同一の円弧面からなる半円形凸部７ａに形成し、該凸部７の上端面７ｂの高さを前記Ｕ字杆６の下端と略合致させ、且つ、上端面７ｂの前記縦軸Ｙ位置にインサートナット８を埋設してなるものである。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of the foundation block of the present invention, wherein the foundation block 1 whose main body is made of concrete is along the road edge so as to form a foundation structure of a continuous guard fence 50. Both ends in the length direction are connected, and the upper surface 3a thereof is aligned with the road surface G and buried in the roadbed.
As shown in FIG. 2, the block body 2 constituting the foundation block 1 is located on the horizontal axis X at the center of the width W of the elongated rectangular rod-shaped body 3 having a rectangular cross section and is oriented in the length direction, and is in the length direction. The block connection interval L is defined as the vertical axis Y and Y in the height direction H extending from both end faces 4 and 4 of the rectangular rod-shaped body 3 in 1 and straddling both end faces 4 and 4. ..
A support hole 10 for incorporating the support 51 of the guard fence 50 is provided in the substantially center of the upper surface 3a of the rectangular rod-shaped body 3, and the heights of both end surfaces 4 and 4 are the same arcuate surface centered on the vertical axis Y. The missing circular recesses 5 and 5 in the direction H are set, and the inner side 6a of the top thereof is set to the vertical axis Y at an appropriate height position of the missing circular recess 5 on one side extending over the entire height direction H. A U-shaped rod 6 that has been brought close to each other is projected.
Further, the protruding end of the convex portion 7 which remains on the upper part in the height direction H and is provided in the lower part in the width W direction with the missing circular concave portion 5 on the other side centered on the vertical axis Y in a plan view. , A semi-circular convex portion 7a formed of an arc surface substantially the same as the missing circular concave portion 5, and the height of the upper end surface 7b of the convex portion 7 is substantially matched with the lower end of the U-shaped rod 6 and is above. The insert nut 8 is embedded at the Y position on the vertical axis of the end surface 7b.

同様に、基礎ブロック１を構成する中詰ブロック２０は、図３に示すように、その外周面２３が前記ブロック本体２の欠円状凹部５と半円形凸部７ａの円弧面と略合致するとともに、その高さが前記矩形棒状体３の上面３ａからＵ字杆６の上端に至る円筒体であり、その上面中心部からボルト挿通孔２１を縦設してなるものである。 Similarly, as shown in FIG. 3, the outer peripheral surface 23 of the filling block 20 constituting the foundation block 1 substantially coincides with the missing circular concave portion 5 of the block main body 2 and the arc surface of the semicircular convex portion 7a. At the same time, the height is a cylindrical body extending from the upper surface 3a of the rectangular rod-shaped body 3 to the upper end of the U-shaped rod 6, and the bolt insertion hole 21 is vertically provided from the center of the upper surface thereof.

図１、図４及び図５は、基礎ブロック１の連結及び使用状態を示し、連結間隔Ｌ毎のブロック本体２同士は、一方のブロック本体２にある他側の凸部７の半円形凸部７ａに、他方のブロック本体２にある片側の欠円状凹部５が当接し、且つ、夫々の上面３ａが面一に揃った状態で接合されると、半円形凸部７ａの上端面７ｂに、片側の欠円状凹部５から突出したＵ字杆６の下端が載置するとともに、その頂部内方６ａには上端面７ｂのインサートナット８が臨んだ状態となる。
次に、上記接合によって他側及び片側の欠円状凹部５、５が対向した状態で形成される空所４０に、その下面２２をＵ字杆６の上端に載置し、且つ、その外周面２３を前記欠円状凹部５、５に近接させた状態で中詰ブロック２０を嵌合する。
続けて、該中詰ブロック２０のボルト挿通孔２１に、その上側から挿入した状態のボルト３０が、凸部７の上端面７ｂのインサートナット８に螺合締結した状態で連結されて、基礎ブロック１相互が連設されるものである。
而して、防護柵５０の支柱５１が各基礎ブロック１の支柱孔１０に建て込まれて固定されるものである。1, FIG. 4 and FIG. 5 show the connection and use state of the foundation block 1, and the block main bodies 2 for each connection interval L are semicircular convex portions of the convex portion 7 on the other side of one block main body 2. When the missing circular recess 5 on one side of the other block body 2 is in contact with the 7a and the upper surfaces 3a are joined in a flush state, the upper end surface 7b of the semicircular convex portion 7a is joined. The lower end of the U-shaped rod 6 protruding from the missing circular recess 5 on one side is placed, and the insert nut 8 on the upper end surface 7b faces the inner side 6a of the top thereof.
Next, the lower surface 22 is placed on the upper end of the U-shaped rod 6 in the empty space 40 formed by the above-mentioned joining so that the missing circular recesses 5 and 5 on the other side and one side face each other, and the outer circumference thereof. The filling block 20 is fitted with the surface 23 in close proximity to the missing circular recesses 5, 5.
Subsequently, the bolt 30 inserted from above is connected to the bolt insertion hole 21 of the filling block 20 in a state of being screwed and fastened to the insert nut 8 on the upper end surface 7b of the convex portion 7, and the foundation block is formed. 1 Mutual is connected.
Thus, the columns 51 of the guard fence 50 are built and fixed in the column holes 10 of each foundation block 1.

この基礎ブロック１によれば、直線状や曲線状、屈曲状等、道路端の設置形態に対し、ブロック本体２同士を中詰ブロック２０とボルト３０により締結する本連結に先立って、その両端における欠円状凹部５と半円形凸部７ａの安定した円弧面当接を利し、ブロック本体２を縦軸回りに自在に調整して設置形態に相応した接合が行える。
加えて、上記接合後に空所４０に嵌合した中詰ブロック２０は、その外周面２３が空所４０の側面をなす両欠円状凹部５、５の円弧面と略合致した状態で、且つ、ブロック本体２の凸部７の上端面７ｂと中詰ブロック２０の下面２２との間に介在するＵ字杆６は、その上端面７ｂと下面２２で挟み込まれるとともに、縦軸Ｘでのボルト３０とインサートナット８の締結で強圧状態となることで、その両端における本連結が完了する。
即ち、上記連結によって、空所４０内にボルト３０で強圧固定した中詰ブロック２０の外周面２３と両欠円状凹部５、５、又、中詰ブロック２０の下面２２とＵ字杆６の上端、更に、Ｕ字杆６の下端と凸部７の上端面７ｂが、夫々密接した強固な摩擦接合状態となり、図１に示す如き使用において、防護柵５０に車両等が水平方向で衝突した際に、その支柱５１から伝達される衝撃力がブロック本体２に作用しても、上記摩擦接合による抵抗力をもって一体化を図り、その連結部で変形や変動等が生じない頑丈な基礎ブロック１となすことができる。According to this foundation block 1, the block main bodies 2 are fastened to each other by the filling block 20 and the bolt 30 at both ends of the road end installation form such as a straight line, a curved line, and a bent shape. Utilizing the stable arc surface contact between the missing circular concave portion 5 and the semicircular convex portion 7a, the block main body 2 can be freely adjusted around the vertical axis to perform joining suitable for the installation form.
In addition, the filling block 20 fitted to the vacant space 40 after the joining is in a state in which the outer peripheral surface 23 thereof substantially matches the arc surface of the bilateral circular recesses 5 and 5 forming the side surface of the vacant space 40. The U-shaped rod 6 interposed between the upper end surface 7b of the convex portion 7 of the block body 2 and the lower surface 22 of the filling block 20 is sandwiched between the upper end surface 7b and the lower surface 22 and is bolted on the vertical axis X. When the 30 and the insert nut 8 are fastened to a strong pressure state, the main connection at both ends is completed.
That is, by the above connection, the outer peripheral surface 23 of the filling block 20 and the double-missing circular recesses 5, 5 which are strongly pressed and fixed in the vacant space 40 with bolts 30, and the lower surface 22 of the filling block 20 and the U-shaped rod 6 The upper end, the lower end of the U-shaped rod 6, and the upper end surface 7b of the convex portion 7 are in a close and strong frictional joint state, and in the use as shown in FIG. 1, a vehicle or the like collides with the guard fence 50 in the horizontal direction. At that time, even if the impact force transmitted from the support column 51 acts on the block main body 2, the block body 1 is integrated with the resistance force due to the frictional joining, and the connecting portion does not deform or fluctuate. Can be done.

図６（イ）乃至（ニ）は、中詰ブロック２０の他実施形態を示し、該中詰ブロック２０は、その下面２２に係合手段を有してなる。
詳しくは、円筒体が側面視逆凹形をなすべく、その底面視で下面２２の両肩に欠円状の突起２４を設けて、該突起２４間を下面２２の中央部で外周面２３間に渡る凹陥部２５とする。又、かかる凹陥部２５の凹断面寸法は、前記ブロック本体２の片側の欠円状凹部５から突出するＵ字杆６の直径と略合致する深さ及びその幅Ｗ方向の両側端６ｂ間と略合致する幅となされる。
更に、ボルト挿通孔２１の上端に、ボルト頭３０ａと角形のワッシャー３１を内在させるべき凹み２６を設けている。6 (a) to 6 (d) show another embodiment of the filling block 20, and the filling block 20 has an engaging means on the lower surface 22 thereof.
Specifically, in order for the cylindrical body to have an inverted concave shape when viewed from the side surface, missing circular protrusions 24 are provided on both shoulders of the lower surface 22 when viewed from the bottom surface, and the protrusions 24 are located between the outer peripheral surfaces 23 at the center of the lower surface 22. It is assumed that the recessed portion 25 extends over. Further, the concave cross-sectional dimension of the recessed portion 25 is a depth substantially matching the diameter of the U-shaped rod 6 protruding from the missing circular recess 5 on one side of the block body 2 and the width between the both side ends 6b in the W direction. The width is almost the same.
Further, at the upper end of the bolt insertion hole 21, a recess 26 in which the bolt head 30a and the square washer 31 should be contained is provided.

この中詰ブロック２０をブロック本体２同士の接合部（空所４０）に嵌合するにあたっては、前記実施形態における嵌合（空所４０内で、中詰ブロック２０の下面２２をＵ字杆６の上端に載置するとともに、その外周面２３を欠円状凹部５、５に近接させる）に加えて、図７（イ）、（ロ）に示すとおり、凹み２６に内在するワッシャー３１がボルト３０の定着性と締結圧を高めるのはもとより、Ｕ字杆６が中詰ブロック２０の下面２２の凹陥部２５に収納され、且つ、Ｕ字杆６の上端や幅Ｗ方向の両側端６ｂが凹陥部２５に密接嵌合するとともに、凹陥部２５の脚部で下面２２たる突起２４の突端面もブロック本体２の凸部７の上端面７ｂと当接して接合部位が増大するために、中詰ブロック２０の回動防止と併せて更に強固な摩擦接合状態となる。 When fitting the filling block 20 to the joint portion (vacant space 40) between the block bodies 2, the fitting (in the empty space 40, the lower surface 22 of the filling block 20 is a U-shaped washer 6) in the above embodiment. In addition to placing the outer peripheral surface 23 close to the missing circular recesses 5 and 5), as shown in FIGS. 7 (a) and 7 (b), the washer 31 contained in the recess 26 is bolted. In addition to increasing the fixing property and fastening pressure of 30, the U-shaped washer 6 is housed in the recessed portion 25 of the lower surface 22 of the filling block 20, and the upper end of the U-shaped washer 6 and both side ends 6b in the width W direction are In addition to being closely fitted to the recessed portion 25, the protruding end surface of the protrusion 24, which is the lower surface 22 at the leg portion of the recessed portion 25, also comes into contact with the upper end surface 7b of the convex portion 7 of the block body 2 to increase the joint portion. In addition to preventing the packing block 20 from rotating, a stronger frictional joint state is obtained.

図８は、前記各実施形態におけるブロック本体の変形例を示し、同図（イ）、（ロ）のブロック本体２は、矩形棒状体３の一側の側面３ｂに、その下端部で幅Ｗ方向に外突出して長さ方向に渡る底板９が設けられるとともに、上面３ａの支柱孔１０を残置して他側の側面３ｂに肉盗み部３ｃを設けている。
このブロック本体２を用いた基礎ブロック１では、底板９の上面に路面Ｇを構成する路盤材を配置することができ、その使用において、底板９が路盤材下に埋設、又、肉盗み部３ｃ内に路盤材が充填されることで、路面Ｇの車両による上載荷重や路盤材を基礎ブロック１の安定荷重として作用させることができ、前記連結に伴う摩擦接合と相俟って、連結強度を増強する効果がある。
又、同図（ハ）の他の変形例が示す如く、底板９は、その外突位置を深めるべく、矩形棒状体３の下端よりも更に下方に延伸せしめた一側の側面３ｂの下端部に連設されても良く、これにより上記路盤材による安定荷重を増分できる。FIG. 8 shows a modification of the block body according to each of the above embodiments, and the block body 2 of FIGS. (A) and (B) has a width W at the lower end of the side surface 3b on one side of the rectangular rod-shaped body 3. A bottom plate 9 that protrudes outward in the direction and extends in the length direction is provided, and a meat stealing portion 3c is provided on the side surface 3b on the other side while leaving the support column hole 10 on the upper surface 3a.
In the foundation block 1 using the block main body 2, the roadbed material constituting the road surface G can be arranged on the upper surface of the bottom plate 9, and in its use, the bottom plate 9 is embedded under the roadbed material, and the meat stealing portion 3c By filling the inside with the roadbed material, the loading load of the vehicle on the road surface G and the roadbed material can act as a stable load of the foundation block 1, and in combination with the friction stir welding associated with the connection, the connection strength can be increased. It has the effect of enhancing.
Further, as shown by another modified example of FIG. 3C, the bottom plate 9 is a lower end portion of a side surface 3b on one side that is extended further downward than the lower end of the rectangular rod-shaped body 3 in order to deepen its outer protrusion position. The stable load due to the roadbed material can be increased.

尚、前記基礎ブロック１の使用における防護柵５０は、ガードパイプを図示したが、これに限定されず、例えて、ガードレール、ガードケーブル等であっても良いことは無論、前記各実施形態において基礎ブロック１を構成する各部位の大きさや寸法は、それら防護柵が許容する衝突力に耐え得るべく、本発明の意図する範囲内で変更可能である。
又、底板９は、ブロック本体２の両側の側面３ｂに設けられても良いし、尚又、側面３ｂに肉盗み部３ｃのみが設けられても良い。The guard fence 50 in the use of the foundation block 1 is shown as a guard pipe, but the present invention is not limited to this, and it goes without saying that a guardrail, a guard cable, or the like may be used as the foundation in each of the above embodiments. The size and dimensions of each part constituting the block 1 can be changed within the range intended by the present invention so as to withstand the collision force allowed by the guardrails.
Further, the bottom plate 9 may be provided on the side surfaces 3b on both sides of the block main body 2, and the side surface 3b may be provided with only the meat stealing portion 3c.

１基礎ブロック
２ブロック本体
３矩形棒状体
３ａ上面
３ｂ側面
４端面
５欠円状凹部
６Ｕ字杆
６ａ頂部内方
７凸部
７ａ半円形凸部
７ｂ上端面
８インサートナット
９底板
１０支柱孔
２０中詰ブロック
２１ボルト挿通孔
２２下面
２３外周面
２４突起
２５凹陥部
３０ボルト
４０空所
５０防護柵
５１支柱
Ｗ幅
Ｘ横軸（長さ方向）
Ｈ高さ方向
Ｙ縦軸（高さ方向）
Ｌ連結間隔
Ｇ路面1 Foundation block 2 Block body 3 Rectangular rod-shaped body 3a Top surface 3b Side surface 4 End surface 5 Missing circular recess 6 U-shaped rod 6a Top inner side 7 Convex part 7a Semi-circular convex part 7b Top surface 8 Insert nut 9 Bottom plate 10 Support hole 20 Clogged block 21 Bolt insertion hole 22 Bottom surface 23 Outer surface 24 Protrusion 25 Recessed part 30 Bolt 40 Vacancy 50 Protective fence 51 Strut W Width X Horizontal axis (length direction)
H Height direction Y Vertical axis (height direction)
L connection interval G road surface

特許第４９４９５３０号Patent No. 4949530

上記課題を解決するために、本発明の防護柵用の基礎ブロックは、請求項１記載の如く、その上面に支柱孔を適宜設けるとともに長さ方向の両端部を連結し、道路端に沿わせて連続的に設置する防護柵用の基礎ブロックであって、矩形棒状体の幅中央でその長さ方向を向く横軸上にあり、且つ、該長さ方向での矩形棒状体の両端面から夫々同長さで延伸して両端面における高さ方向のそれぞれの縦軸間をブロックの連結間隔とし、両端面は夫々縦軸を中心とした円弧面が高さ方向に向けた欠円状凹部となされ、矩形棒状体の片側の端面は、欠円状凹部が高さ方向に全域に渡って設けられ、矩形棒状体の片側から平面視で湾曲した頂部内方を前記縦軸に近接せしめたＵ字杆を突設し、又、矩形棒状体の他側の端面は、高さ方向の上方に欠円状凹部を形成し下方に幅方向に渡るとともに、矩形棒状体の片側から横軸方向に突出した凸部が設けられ、該凸部の突端が平面視で前記縦軸を中心として、連結する他の矩形棒状体の片側の端面の欠円状凹部と略同一の円弧面からなる半円形凸部であり、該凸部の上端面の高さが前記Ｕ字杆の下端と略合致し、又、上端面の前記縦軸位置にインサートナットを埋設してなるブロック本体と、外周面が前記欠円状凹部と半円形凸部の円弧面と略合致するとともに、前記矩形棒状体の上面からＵ字杆の上端に至る高さを有する円筒体で、その円弧中心部にボルト挿通孔を縦設してなる中詰ブロックと、ボルトとからなり、連結間隔毎のブロック本体同士が、一方のブロック本体にある他側の半円形凸部に他方のブロック本体にある片側の欠円状凹部が当接した状態で、且つ、半円形凸部の上端面に片側のＵ字杆の下端を載置させるとともに、その頂部内方に上端面のインサートナットを臨ませた状態で接合され、他側及び片側の欠円状凹部が対向した状態の空所に、Ｕ字杆の上端に前記中詰ブロックを載置し、且つ、前記中詰ブロックの外周面を前記欠円状凹部に近接させた状態で前記中詰ブロックが嵌合され、該中詰ブロックのボルト挿通孔に挿入した状態のボルトが、一方のブロック体の他側にある上端面のインサートナットに螺合締結した状態で連結されてなるものである。In order to solve the above problems, as described in claim 1, the foundation block for the protective fence of the present invention is provided with column holes as appropriate on the upper surface thereof, and both ends in the length direction are connected so as to follow the road edge. It is a foundation block for a guard fence to be continuously installed, and is located on the horizontal axis facing the length direction at the center of the width of the rectangular rod-shaped body, and from both end faces of the rectangular rod-shaped body in the length direction. between each of the vertical axis in the height direction that put on both end faces extend in respective same length as the coupling interval block, both end faces arcuate surface around the respective vertical axis is directed in the height direction segmental Jo recess and made, the end surface of one side of the rectangular rod-shaped body, the arcuate recess is provided I pass the entire region in the height direction, the top portion side curved in plan view from one side of the rectangular rod-shaped body to the longitudinal axis projecting proximity allowed U-rod, also, the other side of the rectangular rod-shaped body end face, the height direction of the upper side to the segmental recess is formed passes Rutotomoni in the width direction downward, the rectangular rod-shaped body convex portions are provided protruding from one side in the horizontal direction, the protruding end of the protruding portion is centered on the longitudinal axis in a flat plane view, substantially the segmental recess of the end face of one side of another rectangular rod-like body connecting It is a semi-circular convex portion made of the same arc surface, the height of the upper end surface of the convex portion substantially matches the lower end of the U-shaped rod, and an insert nut is embedded at the vertical axis position of the upper end surface. A cylindrical body having a height extending from the upper surface of the rectangular rod-shaped body to the upper end of the U-shaped rod while having an outer peripheral surface substantially matching the arc surface of the missing circular concave portion and the semicircular convex portion. It consists of a filling block with a bolt insertion hole vertically provided in the center of the arc and a bolt, and the block bodies at each connection interval are connected to the semicircular convex part on the other side of one block body and the other block body. The lower end of the U-shaped rod on one side is placed on the upper end surface of the semi-circular convex portion, and the insert nut on the upper end surface faces the inside of the top of the semicircular convex portion. are joined in a state of Mase was, the cavity in a state where the other side and one side of the arcuate recess has opposite, and placing the Chutsume block the upper end of the U-shaped rod, and the outer peripheral surface of the Chutsume block wherein in a state of being close to the arcuate recess Chutsume block is fitted, the bolt in the state inserted into the bolt insertion hole of the Chutsume block, the upper end surface of the insert nut is on the other side of the one block body It is connected in a state of being screwed and fastened to.

上記構成の基礎ブロックでは、その本連結に先立つブロック本体同士の端面接合が欠円状凹部と半円形凸部の安定した円弧面当接で、直線状や曲線状、屈曲状等、道路端への設置形態に相応してブロック本体を縦軸回りに適宜調整可能であることを前提として、両端面接合後の空所への中詰ブロックの嵌合にあっては、該空所の側面たる両欠円状凹部の円弧面と中詰ブロックの外周面が略合致するとともに、ブロック本体の凸部の上端面と中詰ブロックの下面との間に介在するＵ字杆を、上記上端面と下面で挟み込みボルト締結で強圧して本連結するために、当該連結がボルト締結力による安全且つ強固な摩擦接合状態となる。In the basic block having the above configuration, the end face joint between the block bodies prior to the main connection is a stable arc surface contact between the missing circular concave portion and the semicircular convex portion, to the road end such as a straight line, a curved line, or a bent shape. On the premise that the block body can be appropriately adjusted around the vertical axis according to the installation form of the above, when fitting the filling block into the vacant space after joining both end faces, it is the side surface of the vacant space. with the outer peripheral surface of the arcuate surface and Chutsume blocks of both the arcuate recess is substantially matched, the U-shaped lever which is interposed between the lower surface of the upper end surface and Chutsume block of the convex portion of the block body, the upper end surface and Since the main connection is made by sandwiching the lower surface with bolts, the connection is in a safe and strong frictional joint state due to the bolt fastening force.

又、本発明の防護柵用の基礎ブロックは、請求項２記載の如く、請求項１の中詰ブロックが下面に突起を有し、該突起はブロック本体の横軸方向に対する側面視で、前記Ｕ字杆を嵌合するための下向きの凹陥部を備え、複数のブロック本体の連結時にＵ字杆を前記凹陥部に嵌合した状態で収納されているものである。
上記構成の基礎ブロックでは、凹陥部に嵌合するＵ字杆のブロック本体の幅方向に対する両側端も接合部になるとともに、中詰ブロックの回動を防止する。Further, the base block for fences of the present invention, as claimed in claim 2, wherein, Chutsume block of claim 1 have a protrusion on the lower surface,該Tokki in side view against the horizontal axis of the block body A downward recessed portion for fitting the U-shaped rod is provided, and the U-shaped rod is housed in a state of being fitted into the recessed portion when a plurality of block main bodies are connected .
In the foundation block having the above configuration, both ends of the U-shaped rod fitted in the recessed portion with respect to the width direction also serve as joint portions, and the filling block is prevented from rotating.

本発明の防護柵用の基礎ブロックでは、ブロック本体同士の接合によって両欠円状凹部が対向状態をなす空所内で、ボルトで強圧固定した中詰ブロックの外周面とブロック本体の両欠円状凹部及び中詰ブロックの下面とブロック本体に突設したＵ字杆の上端、又、同Ｕ字杆の下端とブロック本体の凸部の上端面が、夫々密接した強固な摩擦接合状態となるために、その使用においては、防護柵から伝播して作用する衝撃力に対しても変形、変動等することがない頑丈な基礎構造体となる。
又、本発明の防護柵用の基礎ブロックでは、複数のブロック本体の連結時にＵ字杆のブロック本体の幅方向に対する両側端が中詰ブロック下面の凹陥部に嵌合して接合部位が増大するために、中詰ブロックの回転防止と併せて更に強固な摩擦接合状態となる。
更に、本発明の防護柵用の基礎ブロックでは、矩形棒状体の側面の一側又は両側に底板を設けているため、その使用において、底板が路盤材下に埋設されることで、路盤材や通行車両による上載荷重を安定荷重として得ることができる。In the foundation block for the protective fence of the present invention, the outer peripheral surface of the filled block and the block body are both missing circles , which are strongly pressed and fixed with bolts in a space where the two missing circular recesses face each other due to the joining of the block bodies. recess and the lower surface and the upper end of the U-shaped rod projecting from the block body of Chutsume block, also, since the upper end face of the convex portion of the lower end and the block body of the U-shaped lever becomes a firm friction joint state closely respectively In addition, in its use, it becomes a sturdy foundation structure that does not deform or fluctuate even with the impact force propagated from the guard fence.
Further, in the foundation block for a protective fence of the present invention, when a plurality of block bodies are connected, both ends of the U-shaped rod with respect to the width direction are fitted into the recessed portion on the lower surface of the filling block to increase the joining portion. Therefore, in addition to preventing the filling block from rotating, a stronger frictional joint state is obtained.
Further, in the foundation block for the protective fence of the present invention, since the bottom plate is provided on one side or both sides of the side surface of the rectangular rod-shaped body, in its use, the bottom plate is embedded under the roadbed material, so that the roadbed material or The loading load of a passing vehicle can be obtained as a stable load.

本発明の実施形態に係る防護柵用の基礎ブロックの使用（連結）状態を示す一部斜視図。 The partial perspective view which shows the use (connection) state of the foundation block for the guard fence which concerns on embodiment of this invention. 同実施形態のブロック本体を示し、（イ）は正面図、（ロ）は平面図、（ハ）は左側面図、（ニ）は右側面図、（ホ）は（イ）のＡ−Ａ断面図。 The block main body of the same embodiment is shown, (a) is a front view, (b) is a plan view, (c) is a left side view, (d) is a right side view, and (e) is AA of (a). Sectional view. 同実施形態の中詰ブロックを示し、（イ）は正面図、（ロ）は平面図。 The filling block of the same embodiment is shown, (a) is a front view, and (b) is a plan view. 同実施形態の連結状態を示す一部斜視図。 A partial perspective view showing a connected state of the same embodiment. （イ）は図４のア部拡大図、（ロ）は図４のＢ−Ｂ拡大断面図、（ハ）は図４のＣ−Ｃ拡大断面図。 (A) is an enlarged view of part A in FIG. 4, (b) is an enlarged sectional view of BB in FIG. 4, and (c) is an enlarged sectional view of CC in FIG. 本発明の他実施形態に係る中詰ブロックを示し、（イ）は正面図、（ロ）は平面図、（ハ）は底面図、（ニ）は（イ）のＤ−Ｄ断面図。 The filling block according to another embodiment of the present invention is shown, (a) is a front view, (b) is a plan view, (c) is a bottom view, and (d) is a DD sectional view of (a). 同他実施形態の中詰ブロックを示し、（イ）は使用状態を示す一部斜視図、（ロ）は（イ）のＥ−Ｅ拡大断面図。 The filling block of the same other embodiment is shown, (a) is a partial perspective view showing a usage state, and (b) is an enlarged sectional view of EE of (a). 本発明の他実施形態に係るブロック本体を示し、（イ）は正面側斜視図、（ロ）は背面側斜視図、（ハ）は更に他のブロック本体を示す正面側斜視図。 A block body according to another embodiment of the present invention is shown, (a) is a front side perspective view, (b) is a back side perspective view, and (c) is a front side perspective view showing another block body.

以下、図面を参照しながら本発明の実施形態について説明する。
図１乃至図５は、本発明の基礎ブロックに係る実施形態を示し、主体をコンクリート製となす基礎ブロック１は、連続する防護柵５０の基礎構造体をなすべく、道路端に沿わせてその長さ方向の両端を連結し、且つ、その上面３ａを路面Ｇに揃えて路盤に埋設するものである。
基礎ブロック１を構成するブロック本体２は、図２に示すように、断面が長方形の細長い矩形棒状体３の幅Ｗ中央でその長さ方向を向く横軸Ｘ上にあるとともに、該長さ方向
での矩形棒状体３の両端面４、４から夫々同長さで延伸して両端面４、４における高さ方向Ｈのそれぞれの縦軸Ｙ、Ｙ間をブロックの連結間隔Ｌとする。
矩形棒状体３の上面３ａの略中央に防護柵５０の支柱５１を建て込む支柱孔１０を設け、両端面４、４を、前記縦軸Ｙを中心としたそれぞれが同一の円弧面で高さ方向Ｈに向けた欠円状凹部５、５とし、矩形棒状体３の片側の端面４は、欠円状凹部５が高さ方向Ｈに全域に渡って設けられ、該欠円状凹部５の適宜高さ位置に、矩形棒状体３の片側から平面視で湾曲した頂部内方６ａを前記縦軸Ｙに近接せしめたＵ字杆６を突設する。
又、矩形棒状体３の他側の端面４は、高さ方向Ｈの上方に欠円状凹部５を形成し下方に幅Ｗ方向に渡るとともに、矩形棒状体３の片側から横軸Ｘ方向に突出した凸部７が設けられ、該凸部７の突端を、平面視で前記縦軸Ｙを中心にするとともに、連結する他の矩形棒状体３の片側の端面４の欠円状凹部５と略同一の円弧面からなる半円形凸部７ａに形成し、該凸部７の上端面７ｂの高さを前記Ｕ字杆６の下端と略合致させ、且つ、上端面７ｂの前記縦軸Ｙ位置にインサートナット８を埋設してなるものである。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of the foundation block of the present invention, wherein the foundation block 1 whose main body is made of concrete is along the road edge so as to form a foundation structure of a continuous guard fence 50. Both ends in the length direction are connected, and the upper surface 3a thereof is aligned with the road surface G and buried in the roadbed.
As shown in FIG. 2, the block body 2 constituting the foundation block 1 is located on the horizontal axis X at the center of the width W of the elongated rectangular rod-shaped body 3 having a rectangular cross section and is oriented in the length direction, and is in the length direction. respectively of the vertical axis Y in the height direction H that put the two end faces 4, 4 of the rectangular rod-shaped body 3 on both end faces 4, 4 extends with each same length, between Y and coupling interval L of the block in ..
A support hole 10 for incorporating the support 51 of the guard fence 50 is provided in the substantially center of the upper surface 3a of the rectangular rod-shaped body 3, and the heights of both end surfaces 4 and 4 are the same arcuate surface centered on the vertical axis Y. and the arcuate recess 5, 5 toward the direction H, on one side of the end face 4 of the rectangular rod-shaped body 3 is provided I pass the entire region in the height direction H is the arcuate recess 5, the segmental recess 5 A U-shaped rod 6 having a top inner side 6a curved in a plan view close to the vertical axis Y is projected from one side of the rectangular rod-shaped body 3 at an appropriate height position.
Further, the other end face 4 of the rectangular rod-shaped body 3, the height direction H of the upper side in the arcuate recess 5 formed and passes Rutotomoni in the width W direction under side, the horizontal axis from one side of the rectangular rod-shaped body 3 protrusion 7 is provided which protrudes in the X direction, a protruding end of the protruding portion 7, as well as around the longitudinal axis Y in a plan view, one side of another rectangular rod-shaped body 3 which connects the end faces 4 Ketsuenjo A semi-circular convex portion 7a formed of an arcuate surface substantially the same as the concave portion 5 is formed, the height of the upper end surface 7b of the convex portion 7 is substantially matched with the lower end of the U-shaped rod 6, and the upper end surface 7b is said to have the same height. The insert nut 8 is embedded at the Y position on the vertical axis.

同様に、基礎ブロック１を構成する中詰ブロック２０は、図３に示すように、外周面２３が前記ブロック本体２の欠円状凹部５と半円形凸部７ａの円弧面と略合致するとともに、高さが前記矩形棒状体３の上面３ａからＵ字杆６の上端に至る円筒体であり、その上面の円弧中心部からボルト挿通孔２１を縦設してなるものである。Similarly, Chutsume block 20 which constitutes the base block 1, as shown in FIG. 3, the outer peripheral surface 23 is substantially coincides with the circular arc surface of said the missing circular recess 5 of the block body 2 semicircular protrusions 7a At the same time , it is a cylindrical body having a height extending from the upper surface 3a of the rectangular rod-shaped body 3 to the upper end of the U-shaped rod 6, and a bolt insertion hole 21 is vertically provided from the arc center of the upper surface thereof.

図１、図４及び図５は、基礎ブロック１の連結及び使用状態を示し、連結間隔Ｌ毎のブロック本体２同士は、一方のブロック本体２にある他側の凸部７の半円形凸部７ａに、他方のブロック本体２にある片側の欠円状凹部５が当接し、且つ、夫々の上面３ａが面一に揃った状態で接合されると、半円形凸部７ａの上端面７ｂに、片側の欠円状凹部５から突出したＵ字杆６の下端が載置するとともに、その頂部内方６ａには上端面７ｂのインサートナット８が臨んだ状態となる。
次に、上記接合によって他側及び片側の欠円状凹部５、５が対向した状態で形成される空所４０に、Ｕ字杆６の上端に前記中詰ブロック２０の下面２２を載置し、且つ、同中詰ブロック２０の外周面２３を前記欠円状凹部５、５に近接させた状態で前記中詰ブロック２０を嵌合する。
続けて、該中詰ブロック２０のボルト挿通孔２１に、該ボルト挿通孔２１の上側から挿入した状態のボルト３０が、凸部７の上端面７ｂのインサートナット８に螺合締結した状態で連結されて、基礎ブロック１相互が連設されるものである。
而して、防護柵５０の支柱５１が各基礎ブロック１の支柱孔１０に建て込まれて固定されるものである。1, FIG. 4 and FIG. 5 show the connection and use state of the foundation block 1, and the block main bodies 2 for each connection interval L are semicircular convex portions of the convex portion 7 on the other side of one block main body 2. When the missing circular recess 5 on one side of the other block body 2 is in contact with the 7a and the upper surfaces 3a are joined in a flush state, the upper end surface 7b of the semicircular convex portion 7a is joined. The lower end of the U-shaped rod 6 protruding from the missing circular recess 5 on one side is placed, and the insert nut 8 on the upper end surface 7b faces the inner side 6a of the top thereof.
Next, the lower surface 22 of the filling block 20 is placed on the upper end of the U- shaped rod 6 in the empty space 40 formed by the joining so that the missing circular recesses 5 and 5 on the other side and one side face each other. and, fitting the said Chutsume block 20 in a state where the outer peripheral surface 23 of the Dochu packed block 20 is brought close to the segmental recess 5,5.
Subsequently, the bolt insertion holes 21 of the middle packed block 20, the bolt 30 in the state inserted from the upper side of the bolt insertion holes 21, connecting while screwed fastened to insert nut 8 of the upper end face 7b of the projections 7 The foundation blocks 1 are connected to each other.
Thus, the columns 51 of the guard fence 50 are built and fixed in the column holes 10 of each foundation block 1.

この基礎ブロック１によれば、直線状や曲線状、屈曲状等、道路端の設置形態に対し、ブロック本体２同士を中詰ブロック２０とボルト３０により締結する本連結に先立って、矩形棒状体３の両端における欠円状凹部５と半円形凸部７ａの安定した円弧面当接を利し、ブロック本体２を縦軸回りに自在に調整して設置形態に相応した接合が行える。
加えて、上記接合後に空所４０に嵌合した中詰ブロック２０は、外周面２３が空所４０の側面をなす両欠円状凹部５、５の円弧面と略合致した状態で、且つ、ブロック本体２の凸部７の上端面７ｂと中詰ブロック２０の下面２２との間に介在するＵ字杆６は、上記上端面７ｂと下面２２で挟み込まれるとともに、縦軸Ｘでのボルト３０とインサートナット８の締結で強圧状態となることで、ブロック本体２の両端における本連結が完了する。
即ち、上記連結によって、空所４０内にボルト３０で強圧固定した中詰ブロック２０の外周面２３と両欠円状凹部５、５、又、中詰ブロック２０の下面２２とＵ字杆６の上端、更に、Ｕ字杆６の下端と凸部７の上端面７ｂが、夫々密接した強固な摩擦接合状態となり、図１に示す如き使用において、防護柵５０に車両等が水平方向で衝突した際に、その支柱５１から伝達される衝撃力がブロック本体２に作用しても、上記摩擦接合による抵抗力をもって一体化を図り、その連結部で変形や変動等が生じない頑丈な基礎ブロック１となすことができる。According to this foundation block 1, a rectangular rod-shaped body is used prior to the main connection in which the block bodies 2 are fastened to each other by the filling block 20 and the bolt 30 for the road end installation form such as a straight line, a curved line, or a bent shape. Utilizing the stable arc surface contact between the missing circular concave portion 5 and the semicircular convex portion 7a at both ends of 3 , the block main body 2 can be freely adjusted around the vertical axis to perform joining suitable for the installation form.
In addition, Chutsume block 20 fitted to the voids 40 after the bonding in a state where the outer circumferential surface 23 is substantially matched with the circular arc surfaces of both the arcuate recess 5, 5 forming the side surface of the cavity 40, and , U shaped lever 6 interposed between the lower surface 22 of the upper end face 7b and Chutsume block 20 of the convex portion 7 of the block body 2, together are sandwiched by the upper end surface 7b and the lower surface 22, a bolt at the longitudinal axis X When the 30 and the insert nut 8 are fastened to a strong pressure state, the main connection at both ends of the block body 2 is completed.
That is, by the above connection, the outer peripheral surface 23 of the filling block 20 and the double-missing circular recesses 5, 5 which are strongly pressed and fixed in the vacant space 40 with bolts 30, and the lower surface 22 of the filling block 20 and the U-shaped rod 6 The upper end, the lower end of the U-shaped rod 6, and the upper end surface 7b of the convex portion 7 are in a close and strong frictional joint state, and in the use as shown in FIG. 1, a vehicle or the like collides with the guard fence 50 in the horizontal direction. At that time, even if the impact force transmitted from the support column 51 acts on the block main body 2, the block body 1 is integrated with the resistance force due to the frictional joining, and the connecting portion does not deform or fluctuate. Can be done.

図６（イ）乃至（ニ）は、中詰ブロック２０の他実施形態を示し、該中詰ブロック２０は、その下面２２に係合手段を有してなる。
詳しくは、円筒体の下面２２に突起２４を有し、該突起２４はブロック本体２の横軸Ｘ方向に対する側面視で前記Ｕ字杆６を嵌合するための下向きの凹陥部２５を備える。更に具体的には、突起２４は円筒体の底面視で下面２２の両肩においてそれぞれが欠円状を呈し、凹陥部２５は下面２２の中央部で外周面２３間に渡ってなる。又、かかる凹陥部２５の凹断面寸法は、前記ブロック本体２の片側の欠円状凹部５から突出するＵ字杆６の直径と略合致する深さ及びブロック本体２の幅Ｗ方向における両側端６ｂ間と略合致する幅となされる。
更に、ボルト挿通孔２１の上端に、ボルト頭３０ａと角形のワッシャー３１を内在させるべき凹み２６を設けている。6 (a) to 6 (d) show another embodiment of the filling block 20, and the filling block 20 has an engaging means on the lower surface 22 thereof.
Specifically, the lower surface 22 of the cylindrical body has a protrusion 24, and the protrusion 24 includes a downward recessed portion 25 for fitting the U-shaped rod 6 in a side view with respect to the horizontal axis X direction of the block body 2 . More specifically, the projections 24 each Oite to the shoulders of the lower surface 22 exhibits Ketsuenjo in bottom view of the cylindrical body, the recess 25 is I passed between the outer peripheral surface 23 in the central portion of the lower surface 22 .. Further, the concave cross-sectional dimension of the recessed portion 25 has a depth substantially matching the diameter of the U-shaped rod 6 protruding from the missing circular recess 5 on one side of the block body 2 and both side ends in the width W direction of the block body 2. The width is approximately the same as that between 6b.
Further, at the upper end of the bolt insertion hole 21, a recess 26 in which the bolt head 30a and the square washer 31 should be contained is provided.

この中詰ブロック２０をブロック本体２同士の接合部（空所４０）に嵌合するにあたっては、前記実施形態における嵌合（空所４０内で、中詰ブロック２０の下面２２をＵ字杆６の上端に載置するとともに、中詰ブロック２０の外周面２３を欠円状凹部５、５に近接させる）に加えて、図７（イ）、（ロ）に示すとおり、凹み２６に内在するワッシャー３１がボルト３０の定着性と締結圧を高めるのはもとより、Ｕ字杆６が中詰ブロック２０の下面２２の凹陥部２５に収納され、且つ、Ｕ字杆６の上端やブロック本体２の幅Ｗ方向における両側端６ｂが凹陥部２５に密接嵌合するとともに、凹陥部２５を備える突起２４の下向きの下面２２もブロック本体２の凸部７の上端面７ｂと当接して接合部位が増大するために、中詰ブロック２０の回動防止と併せて更に強固な摩擦接合状態となる。When fitting the filling block 20 to the joint portion (vacant space 40) between the block bodies 2, the fitting (in the empty space 40, the lower surface 22 of the filling block 20 is a U-shaped washer 6) in the above embodiment. In addition to placing the outer peripheral surface 23 of the filling block 20 close to the missing circular recesses 5 and 5), it is inherent in the recess 26 as shown in FIGS. 7 (a) and 7 (b). The washer 31 not only enhances the fixing property and the fastening pressure of the bolt 30, but also the U-shaped rod 6 is housed in the recessed portion 25 of the lower surface 22 of the filling block 20, and the upper end of the U-shaped rod 6 and the block body 2 with both side ends 6b is closely fitted to the recessed portion 25 in the width W direction, the upper end face 7b and the contact with the joint portion of the projecting portion 7 of the lower surface 22 also blocks the main body 2 below facing projection 24 with a recess 25 Since the number is increased, the filling block 20 is prevented from rotating, and a stronger frictional joint state is obtained.

Claims

A foundation block for a protective fence, which is provided with holes for columns on the upper surface thereof and both ends in the length direction are connected and continuously installed along the road edge, and is the width (W) of a rectangular rod-shaped body (3). ) On the horizontal axis (X) facing the length direction at the center, and extending from both end faces (4) (4) of the rectangular rod-shaped body (3) in the length direction by the same length, respectively. The vertical axis (Y) (Y) in the height direction (H) located across both end faces (4) and (4) is the block connection interval (L), and both end faces (4) and (4) are vertical. The arcuate surface centered on the axis (Y) is formed as a missing circular recess (5) (5) in the height direction (H), and one side of the missing circular recess (H) extends over the entire height direction (H). A U-shaped rod (6) having an inner top portion (6a) close to the vertical axis (Y) in a plan view is projected from 5), and a missing circular recess (5) on the other side is heightened. The tip of the convex portion (7) remaining in the upper part of the direction (H) and provided in the lower part in the width (W) direction is centered on the vertical axis (Y) in a plan view and is a missing circular concave portion. It is a semi-circular convex portion (7a) formed of substantially the same arc surface as (5), and the height of the upper end surface (7b) of the convex portion (7) substantially matches the lower end of the U-shaped rod (6). Further, the block main body (2) having an insert nut (8) embedded in the vertical axis (Y) position of the upper end surface (7b), the missing circular recess (5), and the semicircular convex portion (7a). A cylindrical body having a height from the upper surface (3a) of the rectangular rod-shaped body (3) to the upper end of the U-shaped rod (6), which substantially matches the arc surface of the circle, and has a bolt insertion hole (21) in the center of the arc. ) Is vertically installed, and the block bodies (2) at each connection interval (L) are located on one block body (2) on the other side. One side of the semicircular convex portion (7a) is in contact with the one-sided missing circular concave portion (5) of the other block body (2), and one side is in contact with the upper end surface (7b) of the semicircular convex portion (7a). The lower end of the U-shaped 杆 (6) is placed on the top, and the insert nut (8) on the upper end surface (7b) is facing the inner side (6a) of the top. The lower surface (22) is placed on the upper end of the U-shaped rod (6) in the empty space (40) in which the concave recesses (5) face each other, and the outer peripheral surface (23) thereof is the missing circular recesses. The filling block (20) is fitted in a state of being close to (5), and the bolt (30) inserted into the bolt insertion hole (21) of the filling block (20) is on the upper end surface (7b). A foundation block for a protective fence, characterized in that it is connected to an insert nut (8) in a screwed state.

The filling block (20) has a side view inverted concave shape having a protrusion (24) on its lower surface (22), and a U-shaped rod (6) is fitted to a concave portion (25) forming the concave shape. The foundation block for the protective fence according to claim 1, which is stored.

A claim in which a bottom plate (9) is provided on one side or both sides of a side surface (3b) of a rectangular rod-shaped body (3), which is connected to the lower end thereof and protrudes outward in the width (W) direction and extends in the length direction. The foundation block for the guard fence according to claim 1 or 2.