JP2012180646A - Guard fence column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guard fence column which can be easily designed and does not damage reliability of products.SOLUTION: The guard fence column includes a base body fixed to an installation surface by an anchor and a column body erected on the base body. The column body includes a first surface plate material and a second surface plate material connected to the first surface plate material through a connection plate material, a reinforcing rib is attached over the upper surface of the base body and the back surface of the second surface plate material of the column body, and a notched part whose lower end boundary is the upper end part of the reinforcing rib is formed on the back surface of the second surface plate material. Also, the column body has a bend part in the middle, and the bend part is formed of an inclined part erected and inclined at a prescribed angle to the base body and a vertical part continued to the inclined part and extended roughly vertically upwards to the base body. Also, on the back surface of the second surface plate material of the inclined part, the distal end part of the reinforcing rib is welded.

Description

  The present invention relates to a protective fence post that forms a part of a protective fence provided on a road shoulder such as a roadway or a bridge.

  2. Description of the Related Art Conventionally, a guard fence provided on a road shoulder such as a roadway or a bridge is composed of a plurality of guard fence posts and a horizontal beam body constructed between these guard fence posts. And the guard fence support | pillar becomes the structure by which the support | pillar main body was erected in the base body attached to an installation surface with an anchor bolt or a nut.

  In such a guard fence post, as shown in FIG. 10, the support body 100 is made up of a front plate member 110 facing the roadway, a rear plate member 120 disposed behind the front plate member 110, and the front plate member 110 and the rear plate member 120. In some cases, the connecting plate member 130 is connected to each other, and these are joined together by welding. Such a column main body 100 is erected on a rectangular plate-shaped base body 200. In the figure, reference numeral 140 denotes a scallop formed as part of the welding technique, reference numeral 210 denotes a bolt insertion long hole formed in the base body 200, and reference numeral 300 denotes a joint between the base body 200 and the column main body 100 by welding. Reinforcing ribs are shown.

  In such a configuration, when the maximum supporting force is exceeded, a curved recess for locally buckling the column main body 100 on the rear plate member 120 is provided so that the rear plate member 120 starts to buckle in the left-right direction (lateral buckling). What is designed not to form is known (for example, refer to Patent Document 1).

  That is, when a collision load is applied to the column main body 100 from the roadway side, for example, as shown in FIG. 11, the rear plate member 120 falls down and a buckled portion 121 is generated, and the column main body 100 is horizontally collapsed. Is. For this purpose, the lateral plate buckling strength of the rear plate member 120 is designed to be smaller than the curved portion buckling strength of the connecting plate member 130.

  With this configuration, as shown in FIG. 12, when the maximum support force is exceeded, the rear plate member 120 is laterally buckled, and as shown in a side view, the rear plate member 120 is formed with the laterally buckled portion 121. (FIG. 12B). Therefore, the column main body 100 largely falls sideways in the left-right direction, as is apparent from the plan view (FIG. 12A) and the front view (FIG. 12C). In addition, in FIG.12 (b), the code | symbol 400 shows the cross beam body which comprises a guard fence.

  With such a configuration, it is not necessary to form a curved concave portion or the like that becomes a starting point of the backward tilting of the column main body 100 in the rear plate member 120, and it is not necessary to determine the size and position of the curved concave portion. In addition, the width dimension and thickness dimension of the front plate member 110, the rear plate member 120, and the connecting plate member 130 can be easily set. Further, since the shape of the column main body 100 is simplified by the amount not forming the curved concave portion, it is said that the manufacture is facilitated.

JP 2007-270556 A

  On the other hand, the protective fence post is configured to satisfy a certain standard in order to ensure safety. In other words, the vehicle is configured to satisfy standard values such as strength performance for preventing the collision vehicle from breaking through the protective fence and deformation performance. For example, in the deformation performance of the column main body, the amount of collapse of the column main body immediately after the column main body when a predetermined load is applied to the upper portion of the column main body is defined.

  However, since the protective fence column having the above-described configuration gives priority to shock absorption due to the column body falling down, the rearward tilting posture is a state in which it swings greatly in the left-right direction as shown in FIG. Sideways). In fact, even if there is no problem in terms of strength, in such a configuration, the amount of collapse to the immediate rear side of the column body may not be within the specified range, but it may be apparently fit. Reliability may be impaired. In addition, the deformation that is severely overturned is also unstable in appearance, and may be uneasy in terms of strength.

  Therefore, when a predetermined load is applied to the upper part of the column main body, it is desired that the structure of the column main body is actually tilted as far as possible to absorb the impact, and the product design is not complicated. By the way.

  (1) In this invention of Claim 1, the base body fixed to an installation surface and the support | pillar main body erected on this base body are provided, The said support | pillar body is a 1st faceplate material, this A second face plate member connected to the first face plate member via a connecting plate member, and a reinforcing rib is mounted across the upper surface of the base body and the back surface of the second face plate member of the column body. The connecting plate member is a protective fence column in which a notch having a lower end boundary at a position corresponding to the upper end of the reinforcing rib is formed.

  (2) In the present invention described in claim 2, in the guard fence post according to claim 1, the cutout portion has a closed end formed in the connecting plate material in a curved shape. .

  (3) In the present invention described in claim 3, in the guard fence column according to claim 1 or 2, the column body has a bent portion in the middle, and the bent portion has a predetermined angle with respect to the base body. It is characterized in that it is formed of a tilted portion that is inclined and inclined and a vertical portion that is continuous with the tilted portion and extends substantially vertically upward with respect to the base body.

  (4) In the present invention according to claim 4, in the guard fence support according to claim 3, the tip of the reinforcing rib is welded to the back surface of the second face plate material of the inclined portion. To do.

  (5) In the present invention according to claim 5, in the guard fence post according to any one of claims 1 to 4, the notch has a closed end edge formed in the connecting plate as an arc, It is formed in the sector shape which makes an open end part obstruct | occluded with a 2nd faceplate material a pair of diameter.

  ADVANTAGE OF THE INVENTION According to this invention, product design etc. can be simplified and cost reduction can be aimed at, without impairing the reliability as a protection fence support | pillar.

It is explanatory drawing of the protection fence support | pillar which concerns on embodiment. It is a perspective view which shows the deformation | transformation state of the same protection fence support | pillar. It is explanatory drawing which shows the same deformation | transformation state. It is explanatory drawing of the protection fence support | pillar which concerns on other embodiment. It is explanatory drawing of the protection fence using the protection fence support | pillar which concerns on embodiment. It is explanatory drawing which shows the attachment state of the horizontal beam body of the same protection fence. It is explanatory drawing of the metal fitting used for attachment of a horizontal beam body and a protection fence support | pillar. It is a reference drawing of a receiving metal fitting. It is a disassembled perspective view which shows the attachment structure of a horizontal beam body and a protection fence support | pillar. It is explanatory drawing of the conventional protective fence support | pillar. It is a perspective view which shows the deformation | transformation state of the conventional protection fence support | pillar. It is explanatory drawing which shows the same deformation | transformation state.

  Fig.1 (a) is a perspective view of the protection fence support | pillar which concerns on this embodiment used for the protection fence for vehicles, FIG.1 (b) is a side view of the protection fence support | pillar. As shown in the figure, the guard fence column is configured by standing a column body 1 on a rectangular plate-like base body 2.

  The column main body 1 includes a front plate 11 that is a first face plate made of a steel plate and facing the roadway side, a rear plate 12 as a second face plate disposed behind the front plate 11, and these front plates A connecting plate member 13 that connects the plate member 11 and the rear plate member 12 is provided, and these plate members 11, 12, and 13 are joined to each other by welding to form a substantially H-shaped cross section.

  In the present embodiment, a cross beam receiving portion 11a made of a curved surface is formed on the upper portion of the front plate member 11, and the rear plate member 12 is formed narrower than the front plate member 11 (see FIG. 3).

  Further, the column main body 1 according to the present embodiment is formed in a substantially square shape by bending at a midway position at a height of about 110 mm from the base body 2 in the height direction. That is, the bent portion 14, which is a bent portion of the column main body 1, is continuous with the inclined portion 1 a that is inclined and inclined with respect to the base body 2 at a predetermined angle, and is connected to the base body 2. On the other hand, it is formed from a vertical portion 1b extending substantially vertically upward. In addition, it is preferable that the height position of the bent portion 14 is within a range of 100 mm to 130 mm from the base body 2.

  Thus, the column main body 1 is composed of the tilted portion 1a and the vertical portion 1b, and the lower portion of the front plate 11 corresponding to the tilted portion 1a is substantially from one end of the base body 2 on the side of the roadway as shown in the figure. The base portion 11b extends vertically upward, and the inclined portion 11c is inclined from the upper portion of the base portion 11b to the other end side. That is, the front plate 11 is formed by a base portion 11b, an inclined portion 11c, and an upright portion 11d extending from the upper portion of the inclined portion 11c substantially vertically upward and having a cross beam receiving portion 11a formed at the upper end portion. Yes.

  In addition, the rear plate member 12 is substantially parallel to the inclined portion 11c of the front plate member 11 and substantially parallel to the raised portion 11d of the front plate member 11 from the upper portion of the rear inclined portion 12a. And a rear standing part 12b extending upward. It should be noted that the upper end position of the rear standing portion 12b is set lower than the upper end of the standing portion 11d of the front plate member 11, that is, the upper end of the cross beam receiving portion 11a.

  Further, the connecting plate member 13 interposed between the front plate member 11 and the rear plate member 12 is made of a substantially heft-shaped plate member defined by the front and rear plate members 11, 12, and the upper end side of the rear plate member 12 stands upright at the rear. As the shape gradually tapers from the upper end of the portion 12b to the vicinity of the upper end of the cross beam receiving portion 11a of the front plate member 11, a design aesthetic appearance can be created.

  On the other hand, a plurality of bolt insertion holes 21 for fixing to the road surface or the like with anchor bolts (not shown) or the like are formed in the base body 2 on which the above-described support body 1 is erected. In this embodiment, in order to increase the freedom of the bolt fixing position, the bolt insertion hole 21 is formed in a long hole shape elongated in the direction along the roadway, and the left and right bolt insertion holes 21 located on the roadway side are as follows. It is arranged in a C shape.

  Further, the protective fence support has a reinforcing rib 3 between the base body 2 and the support body 1. That is, the reinforcing rib 3 is attached across the upper surface of the base body 2 and the rear surface of the rear plate member 12 of the column body 1, and the reinforcing rib 3 is formed on the rear surface of the rear inclined portion 12a that forms a part of the rear surface of the rear plate member. The tip is welded. In the figure, reference numeral 4 denotes a scallop formed as part of the welding technique.

  In the above configuration, in the present embodiment, the connection plate 13 is formed with the notch 5 having a lower end boundary at a position corresponding to the upper end of the tip of the reinforcing rib 3. In the present embodiment, since the upper end position of the reinforcing rib 3 is in the vicinity of the lower side of the bent portion 14, the cutout portion 5 is formed in the bent portion 14.

  This is because, when a vehicle or the like collides with the column main body 1 and a predetermined load is applied, the column main body 1 is tilted to the right before the side plate buckling occurs in the left-right direction. The buckling strength of the connecting plate 13 at the bent portion 14 of the column main body 1 is weakened. Then, this buckling strength may be set as the maximum support force of the column main body 1. In order to realize such strength, the dimensions such as the thickness, including the width dimensions of the front plate material 11 and the rear plate material 12, and the dimensions such as the width and thickness of the connecting plate material 13 are appropriately determined. become.

  In particular, in this embodiment, the notch 5 is provided in the connecting plate member 13 in the bent portion 14 to reduce the cross-sectional secondary moment of the connecting plate member 13 in the bent portion 14. As a result, as shown in FIG. 2, when a predetermined load is applied to the column main body 1, the column main body 1 can be tilted rightward to absorb the impact.

  Thus, according to the present embodiment, for example, a predetermined load is applied to the upper portion of the column main body 1 due to a collision of a vehicle or the like, and the load is concentrated on the bent portion 14, but the maximum support force of the column main body 1 is exceeded. In this case, since the notch portion 5 is provided, the back plate 12 of the column main body 1 is not buckled so as to fall sideways, and the column main body 1 tilts rightward as shown in FIG. Thus, the structure can absorb the impact. Moreover, product design is not complicated. Therefore, when such a guard fence support is used, it is possible to provide a guard fence that does not impair reliability while reducing costs.

  By the way, the notch part 5 is formed in the sector shape which makes the closed end edge 51 formed in the connection board | plate material 13 into a circular arc, and makes the open end parts 52 and 52 obstruct | occluded by a rear surface board material into a pair of diameter. Moreover, since the center of the arc is the bending point of the bent portion 14, the force concentrated on the bent portion 14 can be evenly received by the cutout portion 5 formed in a sector shape.

  In addition, as a shape of the notch part 5, it is not necessarily limited to a fan shape. The shape of the cutout 5 may be any shape as long as the closed end edge 51 formed on the connecting plate 13 draws a smooth curve. For example, it may be formed in a curved shape.

  Here, with reference to FIG. 3, a description will be given of a state in which the column main body 1 tilts rightward without the rear plate member 12 falling down and buckling when the maximum support force is exceeded. In FIG. 3 (b), reference numeral 6 indicates a horizontal beam body that is horizontally mounted on the guard fence post. Here, for convenience, only one horizontal beam body 6 is shown. Multiple pieces are attached at predetermined intervals in the vertical direction (see FIGS. 5 to 7).

  As shown in FIG. 3, when the maximum supporting force of the column main body 1 is exceeded with respect to the load applied to the column main body 1, the force concentrates on the bent portion 14 as shown in FIG. At this time, since the notch portion 5 is provided, the connecting plate member 13 buckles and tries to bend backward, and a compressive force is applied to the rear plate member 12 to cause the buckling deformation 7 toward the rear. While leaning backwards.

  Therefore, as is clear from FIGS. 3A and 3C, the column main body 1 is tilted to the right as much as possible to absorb the energy of impact without falling down in the horizontal direction. It becomes possible.

  With such a configuration, it is not necessary to form a curved concave portion or the like that causes the rearward tilt of the column main body 1 in the rear plate member 12, and the width dimensions of the front plate member 11, the rear plate member 12, and the connecting plate member 13 The thickness dimension can be easily set, and the shape of the column main body 1 is simplified to the extent that the curved recess is not formed. In addition, since the column main body is deformed immediately after it does not fall down, the amount of collapse of the column main body 1 when the predetermined load is applied to the upper part of the column main body 1 is defined. Safety standards will be met and there is no risk of compromising reliability.

  FIG. 4 shows a column main body 10 according to another embodiment. In addition, the same code | symbol is attached | subjected about the component same as previous embodiment (refer FIG. 1), and the description is abbreviate | omitted.

  The column main body 10 according to this embodiment is different from the column main body 1 according to the previous embodiment because the column main body 1 according to the previous embodiment is bent approximately at a height of about 110 mm from the base body 2. In contrast to being formed in a letter shape, it is formed in a straight shape.

  That is, the column main body 10 is composed of a front plate member 11, a rear plate member 12, and a connecting plate member 13, all standing upright from the base body 2. Therefore, here, the reinforcing rib 3 is welded to the vertical surface of the rear plate 12.

  Also here, the notch 5 having the lower end boundary at the position corresponding to the upper end of the tip of the reinforcing rib 3 is formed in the connecting plate 13. The notch 5 according to the present embodiment is formed in a semicircular shape having a closed end edge 51 formed on the connecting plate 13 as an arc and an open end 52 closed by the rear plate 12 as a diameter. Here, the center of the arc is positioned above the tip of the reinforcing rib 3, but the height of the tip of the reinforcing rib 3 may coincide with the center of the notch 5.

  In this embodiment, when a load is applied to the column main body 1 due to a collision of a vehicle or the like and the maximum support force of the column main body 1 is exceeded, the force is concentrated near the upper end of the reinforcing rib 3. However, since the notch 5 is provided in the vicinity of the front end of the reinforcing rib 3, the connecting plate 13 is buckled and tends to bend backward, and a compression force is applied to the rear plate 12, so that it moves backward. Tilt and absorb collision energy.

  Here, the guard fence 8 for vehicles as shown in FIG. 5 is constructed using the guard fence post described above. In other words, three horizontal beam bodies 6 (an upper horizontal beam body 6a, an intermediate horizontal beam body 6b, and a lower horizontal beam body 6c) are horizontally mounted on a column main body 1 standing on a base body 2 attached to an installation surface. ing. In addition, the cross beam body 6 is connected in a state where the two cross beam bodies 6 and 6 are abutted to each other at the center portion of the front plate 11 of the column main body 1.

  Further, as described above, the horizontal beam body receiving portion 11a is formed at the upper end portion of the column main body 1, and the upper horizontal beam body 6a made of a cylindrical pipe having a predetermined diameter is attached to the horizontal beam body receiving portion 11a. The bolts 61 are connected and fixed. Then, the intermediate horizontal beam body 6b and the lower horizontal beam body 6c having a diameter smaller than that of the upper horizontal beam body 6a are fixedly connected to the front plate 11 of the column main body 1 via the support fitting 9 as shown in FIG.

  FIG. 7 shows a metal fitting 9 used in this embodiment. 7 (a) is a perspective view, FIG. 7 (b) is a front view, FIG. 7 (c) is a rear view, FIG. 7 (d) is a plan view, FIG. 7 (e) is a bottom view, and FIG. Is a left side view.

  As shown in the figure, the metal fitting 9 is formed in a substantially T-shaped semi-summary comprising a body part 91 extending in the vertical direction and a sleeve part 92 connected to the upper part of the body part 91 and extending in the horizontal direction. ing. And the side part used as the boundary part of the body part 91 and the sleeve part 92 is made into the bolt insertion part 93. FIG.

  The body part 91 and the sleeve part 92 form curved surfaces 91a and 92a having curvatures corresponding to the diameters of the intermediate horizontal beam body 6b and the lower horizontal beam body 6c on one side surface, and the front plate 11 of the column main body 1 on the other side surface. A plane 90 is formed corresponding to (see FIG. 7F). In the drawing, 9a and 9b are chamfered portions.

  If such a bracket 9 is not used, the intermediate horizontal beam body 6b and the lower horizontal beam body 6c are directly attached to the front plate member 11 of the flat column main body 1 by the mounting bolts 61. Although the body 6 and the front plate member 11 are in line contact, the intermediate cross beam body 6 can be firmly received by the surface by using the metal fitting 9, so that a stable connected state can be maintained.

  By the way, when using a receiving bracket, as shown in FIG. 8, as shown in FIG. 8, one side surface of a plate material having a substantially rectangular shape when viewed from the front is curved to match the horizontal member, and bolt insertion holes 900.900 are formed. In general, the rectangular bracket 9A is provided with a predetermined interval.

  However, in such a configuration, when the horizontal beam body 6 is attached to the column main body 1, the rectangular bracket 9A must be interposed between the column main body 1 and the horizontal beam body in advance, and handling is extremely troublesome. In FIG. 8, reference numeral 65 denotes a connecting inner cylinder, and the end portions of the cross beam bodies 6 are brought into contact with each other via the connecting inner cylinder 65 and can be connected.

  Therefore, by adopting the configuration as in the present embodiment, after the horizontal beam body 6 is temporarily fixed to the column main body 1, the intermediate horizontal beam body is inserted by inserting the receiving bracket 9 into the gap between the horizontal beam body 6 and the column main body 1. 6 and the front plate member 11 can be brought into firm surface contact with each other and can be connected in a state where the intermediate cross beam body 6 is securely received by the surface.

  That is, as shown in FIG. 9, the ends of the horizontal beam bodies 6 (intermediate horizontal beam body 6 b and lower horizontal beam body 6 c) are abutted and connected via the connecting inner cylinder 65, and as shown in FIG. The horizontal beam body 6 is temporarily fixed to the column main body 1 via the mounting bolt 61. Then, as described above, when the horizontal beam body 6 is inserted into the gap between the column main body 1 and the receiving bracket 9 is inserted, and then the mounting bolt 61 is tightened, the horizontal beam body 6 is drawn toward the column main body 1 side, and the bracket is also received. Nine curved surfaces 91a, 92a are firmly received by the surface, and a surely connected and fixed state is realized.

  From the embodiments described above, the following protective fence posts are realized.

  For example, a base body 2 fixed to the installation surface by an anchor or the like, and a column main body 1 standing on the base body 2, the column main body 1 includes a front plate member 11 (first face plate member), The front plate member 11 is provided with a rear plate member 12 (second face plate member) connected via a connecting plate member 13, and includes reinforcing ribs straddling the upper surface of the base body 2 and the rear surface of the rear plate member 12 of the column body 1. 3 is a protective fence post in which a cutout portion 5 is formed on the connecting plate member 13 at the position corresponding to the upper end of the front end of the reinforcing rib 3.

  Further, in the guard fence post, the notch 5 is formed in a fan shape having a closed end edge 51 formed in the connecting plate 13 as an arc and an open end 52, 52 closed by the rear plate 12 as a pair of diameters. Protective fence post.

  Further, in the guard fence column, the column body 1 has a bent portion 14 in the middle, and the bent portion 14 is inclined with respect to the base body 2 at a predetermined angle, and the inclined portion 1a is erected. A protective fence post formed of a vertical portion 1 b that is continuous with 1 a and extends substantially vertically upward with respect to the base body 2.

  Furthermore, in the above-described protective fence post, the protective fence post in which the tip of the reinforcing rib 3 is welded to the back surface of the rear plate 12 of the inclined portion 1a.

  Moreover, the following guard fence is implement | achieved from embodiment mentioned above.

  A protective fence constructed by connecting a horizontal beam body 6 to a front plate member 11 of a column main body 1 via a receiving bracket 9, wherein the front plate member 11 has a flat surface portion, and the receiving bracket 9 extends in a vertical direction. A body portion 91 and a sleeve portion 92 connected to the upper portion of the body portion 91 and extending in the horizontal direction. The armpit portion 91 and the sleeve portion 92 serve as a boundary between the body portion 91 and the sleeve portion 92. Guard fence with bolt insertion part 93 as part.

  Further, after temporarily fixing the horizontal beam body 6 and the column main body 1, the horizontal bracket body 9 is inserted into the gap between the horizontal beam body 6 and the column main body 1, whereby the metal bracket 9 is connected to the horizontal beam body 6 and the front plate 11. Guard fence interposed between and.

  As described above, the present invention has been described through the embodiments. However, the present invention is not limited to the configuration of the embodiments, and design changes and the like can be made as appropriate without departing from the scope of the claims. .

  For example, a plurality of reinforcing ribs 3 may be provided on the column main body 1 and the shape thereof may be changed as appropriate. Moreover, the number of the horizontal beam bodies 6 and the like can be appropriately set. Furthermore, the design of the dimensions of the base body and the shape of the bolt insertion hole can be freely changed.

  Further, in the above-described embodiment, the reinforcing rib 3 and the members constituting the column main body 1 (10) are connected to each other by welding, but may be integrally formed by casting. That is, the column main body 1 (10) in which the inclined portion 1a, the vertical portion 1b, the base body 2, the reinforcing rib 3 and the like are integrally formed may be used.

DESCRIPTION OF SYMBOLS 1,10 Prop body 1a Inclined part 1b Vertical part 2 Base body 3 Reinforcement rib 5 Notch part 11 Front plate material 12 Rear plate material 13 Connection plate material 51 Closed edge 52 Open end

Claims (5)

A base body fixed to the installation surface, and a support body standing on the base body,
The column main body includes a first face plate member and a second face plate member connected to the first face plate member via a connecting plate member, and the upper surface of the base body and the second face plate member. A protective fence column, wherein a reinforcing rib is attached across the rear surface of the face plate material, and a notch portion having a lower end boundary at a position corresponding to the upper end portion of the reinforcing rib is formed in the connecting plate material.   The guard fence post according to claim 1, wherein the cutout portion has a closed end edge formed in the connecting plate material in a curved shape.   The column main body has a bent portion in the middle. The bent portion is inclined with respect to the base body at a predetermined angle, and is continuous with the inclined portion. The protective fence column according to claim 1, wherein the protective fence column is formed of a vertical portion extending substantially vertically upward.   4. The protective fence column according to claim 3, wherein a tip end portion of the reinforcing rib is welded to a back surface of the second face plate member of the inclined portion.   The cutout portion is formed in a sector shape having a closed end edge formed in the connecting plate member as an arc and an open end portion closed by the second face plate member as a pair of diameters. Item 5. The protective fence post according to any one of items 1 to 4.

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