JP4464903B2 - Guard fence and vehicle guard fence - Google Patents

Description

  The present invention relates to a protective fence post and a vehicle protective fence.

  The guard fence for vehicles prevents a vehicle from falling from the roadway when the vehicle deviates from the driving lane (roadway). A plurality of pillars (hereinafter referred to as “guard fence pillars”) standing at predetermined intervals. It has a structure in which a horizontal member such as a horizontal beam or wire is stretched between them.

  From the standpoint of preventing the vehicle from falling, it is better that the rigidity / strength of the guard fence for the vehicle is large. However, if it is made larger than necessary, there is a risk that the driver or passenger will be damaged greatly due to the impact at the time of collision. There is also a risk that a vehicle that has contacted or collided with the vehicle protective fence will be bounced back to the roadway and cause a secondary disaster.

  For this reason, in the conventional fence for vehicles, when a vehicle contacts or collides and an external force of a certain level or more is applied, the impact is first absorbed by crushing and bending deformation of the horizontal member, and then the warp of the guard fence post and It is comprised so that an impact may be absorbed by a deformation | transformation. By doing so, it becomes possible to minimize damage to the driver and passengers and to prevent the vehicle from rebounding to the roadway (for example, Patent Documents 1 to 5). 3).

  Patent Documents 1 to 3 all of the guard fence columns support a base plate that is fixed to a foundation (cover) built along the roadway, and a column that supports the horizontal member disposed along the roadway. And a main body. In addition, although the support | pillar for protection fences of patent document 1 and patent document 2 does not weld the support | pillar main body to a baseplate, the support | pillar for protection fence of patent document 3 welds only the lower end of a support | pillar main body to a baseplate.

Japanese Utility Model Publication No. 3-51487 JP-A-11-117245 JP 2005-1888031 A

  Vehicles that deviate from the roadway usually contact or collide with the horizontal member first, and rarely contact or collide directly with the column body, but directly contact and collide with the column body. Even in this case, in order to guide the vehicle smoothly, it is desirable that members other than the anchor bolts for fixing the base plate are not arranged on the roadway side from the front surface (surface facing the roadway) of the column main body. From this point of view, it can be said that there is room for improvement in the protective fence support of Patent Document 1 in which the reinforcing ribs are arranged on the roadway side of the front surface of the support body. Moreover, although the support | pillar for protection fences of patent document 1 is the structure which fixes a support | pillar main body with respect to the support | pillar support standingly arranged by the baseplate, while a support | pillar support body is a complicated structure, it supports a support | pillar at the time of construction. Since it is necessary to fix the column main body to the body, it is difficult to reduce the cost of manufacturing and installing the vehicle protection fence.

  In the protective fence support of Patent Document 2, the support main body is welded only to the center stiffener erected on the base plate, and is not welded to the base plate. A large tensile force acts on the center stiffener intensively. Therefore, in the protective fence support of Patent Document 2, it is necessary to make the center stiffener heavy. However, this is not only uneconomical but also detracts from aesthetics. If the center stiffener is made light and thin, the column main body will be greatly inclined even with a small impact force.

  The protective fence support of Patent Document 3 has a problem that the number of processing steps for the support body increases. That is, in the protective fence support of Patent Document 3, it is necessary to form a notch on the rear side (the side opposite to the roadway) of the support body and weld the reinforcing plate to the notch. It will take time and money to manufacture. In addition, the base plate and the column main body are joined by welding, but the weld length is only the length of the outer periphery of the column main body, so that sufficient strength against the impact force generated at the time of collision is maintained. Requires advanced welding techniques.

  From such a viewpoint, an object of the present invention is to provide a low-cost protective fence post and a vehicle protective fence capable of solving the above-described problems of the prior art.

  The present invention devised to solve such a problem is a guard post for supporting a horizontal member disposed along a roadway, and is fixed to a foundation constructed along the roadway. A base plate, a column main body joined to the upper surface of the base plate by welding, and a reinforcing member joined to the base plate and the column main body by welding, the reinforcing member on the roadway side of the column main body Arranged between a straight reference line that is in contact with the edge and parallel to the horizontal member, and a straight reference line that passes through the centroid of the cross section of the column body and is parallel to the horizontal member. It is characterized by being.

The support fence post according to the present invention can be manufactured by simply welding the support body to the base plate and welding the reinforcing member to the base plate and the support body. Moreover, since the reinforcement fence support according to the present invention welds the reinforcing member to the support main body and the base plate, the joint strength between the base plate and the support main body is high. In other words, by providing a reinforcing member, it is possible to secure a weld length that is equal to or greater than the circumferential length of the column main body, and as a result, when the vehicle contacts or collides with the horizontal member, the joint portion breaks first. Can be prevented. In addition, when a vehicle contacts or collides with a horizontal member or the like, a force (tensile force) for pulling the column main body off the base plate acts on the front side (roadway side) of the joint portion. The protective fence post according to the position where the tensile force can be resisted (that is, a vertical surface including a front reference line parallel to the horizontal member that is in contact with the edge of the support body on the roadway side, and the post Since the reinforcing member is provided between the vertical plane including the intermediate reference line parallel to the horizontal member and passing through the centroid of the cross section of the main body, the resistance to the tensile force is high. In addition, the surface facing the roadway side of the reinforcing member may be flush with the roadway side edge of the column main body.

  In the present invention, since the column main body is welded to the base plate, the tensile force is not concentrated only on the reinforcing member, but is distributed to the column main body and the reinforcing member. That is, according to the present invention, since it is not necessary to make the reinforcing member heavy, it is possible to realize a clean aesthetic appearance, and it is possible to reduce material costs.

  The horizontal member includes a rod-like (including hollow) beam member, a linear member such as a wire, and a plate-like member bent into an appropriate shape.

Further, in the present invention, the reinforcing member is disposed between the vertical surface including the front reference line and the vertical surface including the intermediate reference line, and is a roadway rather than the front surface (surface facing the roadway) of the column main body. Since it does not protrude to the side, even if the vehicle deviates from the travel lane and contacts / collises with the vehicle guard fence, the vehicle can be smoothly guided without contacting the reinforcing member.

  The column main body can be formed using, for example, a cylindrical shape (such as a steel shape, an aluminum shape, or an aluminum alloy shape), but is formed using a square tube shape that facilitates material procurement. Then, the manufacturing cost can be reduced.

  In the case where the column main body is formed by using a rectangular tube-shaped member, it is preferable that the base plate is erected with one side faced to the roadway. If it does in this way, it will become easy to attach a horizontal member to the field which faces the roadway of a support body.

  When the column main body made of a rectangular tube-shaped material is installed with one side faced to the roadway, the surface of the reinforcing member facing the roadway is the surface of the column main body facing the roadway. It should be parallel. This gives a harmonious appearance.

  If the reinforcing members are disposed on both the left and right sides of the column main body, the tensile force acting on the column main body is distributed to the left and right, so that the joint portion is difficult to break. Further, if the left and right reinforcing members are arranged in a straight line, the tensile force acting on the column main body will be evenly distributed on the left and right sides, so that the joint portion will be more difficult to break.

  Moreover, in this invention, it is good to stop the said horizontal member at one point on the surface which faces the said roadway of the said support | pillar main body. In this way, it is possible to easily cope with a case where a gradient is formed in the horizontal member in accordance with a change in road gradient.

A vehicle protective fence according to the present invention that solves the above-described problem is a vehicle protective fence including a horizontal member installed along a roadway, and a protective fence column that supports the horizontal member, The horizontal member includes a plurality of hollow beam members arranged in a longitudinal direction and a connecting member disposed inside a boundary portion of the adjacent hollow beam members, The support column is configured to include a base plate, a support column main body standing on the base plate, and a reinforcing member joined to the base plate and the support column main body by welding . A straight line in contact with the edge on the roadway side and including a front reference line parallel to the horizontal member, and a straight line passing through the centroid of the cross section of the column main body and parallel to the horizontal member is disposed between the vertical plane including the line, the The empty beam member and the connecting member are joined by bolts, the hollow beam member is in contact with a surface of the column main body facing the roadway, and the connecting member passes through the column main body. It is fixed to the column main body by a bolt. With such a vehicular protective fence, it is possible to easily cope with the case where a slope is formed on the horizontal member in accordance with a change in the road slope. Further, the guard fence support is formed only by forming a bolt insertion hole, and other processing such as notch processing is unnecessary, and therefore, manufacture is easy.

  According to the present invention, it is possible to smoothly guide a vehicle when the vehicle collides against a vehicle guard fence while suppressing the manufacturing cost, and further, it is possible to realize a clean aesthetic appearance. It becomes possible. Moreover, since the number of processing steps for the column main body is reduced, the column main body can be manufactured easily and quickly.

  As shown in FIG. 1, the vehicle guard fence G according to the present embodiment supports three horizontal members 10, 10, 10 installed along the roadway R, and the horizontal members 10, 10,. Are provided with a plurality of guard fence posts 20, 20,... And a lattice 30 disposed between the guard fence posts 20, 20 adjacent to each other. In each member, the surface facing the roadway R is referred to as “front surface”, and the opposite surface is referred to as “rear surface”.

  The three strips 10, 10, 10 are arranged in parallel to each other. In addition, in this embodiment, although the guard fence G for vehicles provided with the three strips of horizontal members 10, 10, and 10 is illustrated, it does not mean that the number of strips of the horizontal members 10 is limited.

  The horizontal member 10 includes a plurality of hollow beam members 11, 11,... Arranged in the longitudinal direction, and a connecting member 12 disposed inside the boundary portion between the adjacent hollow beam members 11, 11. Has been.

  The hollow beam member 11 is a shape having a rectangular tube shape, and is cut to the same length as the interval between the adjacent columns 20 and 20. In the present embodiment, the shape of the hollow beam member 11 is made of square tube-shaped steel (square steel pipe). As shown in FIG. 2, an insertion hole 11 a is formed at the end of the rear wall of the hollow beam member 11. The shaft portion of the bolt B1 is inserted through the insertion hole 11a, and as a result, the connecting member 12 and the hollow beam member 11 are fixed. A semicircular cutout 11b is formed at the edge of the rear wall of the hollow beam member 11. The shaft portion of the bolt B2 is inserted into the notch 11b.

  The connecting member 12 is disposed so as to straddle the boundary portion between the adjacent hollow beam members 11 and 11. The connecting member 12 is made of a member having an outer surface shape that can be inserted into the hollow beam member 11 (inside). In the present embodiment, the connecting member 12 is formed in a square tube shape by welding a square tube shape member (for example, a square tube shape steel (square steel pipe) or an L-shaped shape steel). The outer surface shape is substantially the same as the inner surface shape of the hollow beam material 11. The connecting member 12 has a female screw hole 12a corresponding to the insertion hole 11a of the hollow beam member 11 at each of both end portions of the rear wall, and corresponds to the notch 11b of the hollow beam member 11 at the center of the rear surface. A female screw hole 12b is formed.

  In order to form the horizontal member 10 having such a configuration, the hollow beam members 11 and 11 may be connected to each other via the connecting member 12. More specifically, first, after half of the connecting member 12 is inserted into the end portion of one hollow beam member 11, the shaft portion of the bolt B1 is inserted into the insertion hole 11a of the hollow beam member 11, and the tip portion thereof. Is inserted into the female screw hole 12a of the connecting member 12, and then the connecting member 12 protruding from the end of one hollow beam member 11 is inserted into the end of the other hollow beam member 11, and then the other hollow beam is inserted. The shaft portion of the bolt B1 may be inserted into the insertion hole 11a of the material 11 and the tip portion may be screwed into the female screw hole 12a of the connecting member 12 (see FIG. 4B).

  As shown in FIG. 3, the guard fence support 20 (hereinafter referred to as “support 20”) is fixed to a foundation K constructed along the roadway R, and welded to the upper surface of the base plate 21. The strut body 22 to be joined, the reinforcing members 23, 23 joined to the base plate 21 and the strut body 22 by welding, the overhanging piece 24 joined to the side surface of the strut body 22 by welding, and the upper end of the pillar body 22 And a lid plate 25 joined by welding. The foundation K is made of reinforced concrete, and anchor bolts B3 are planted.

  The base plate 21 is made of a steel plate having a rectangular shape when viewed from above, and has insertion holes 21a at the four corners. The upper end portion of the anchor bolt B3 protruding from the foundation K is inserted through the insertion hole 21a. A placement surface 21b on which the column main body 22 is placed is secured at the center of the base plate 21, and through holes 21c and 21c for draining water are formed on the placement surface 21b. Note that the base plate 21 is not limited to a rectangular shape and is not illustrated, but may be a polygonal shape, a circular shape, or the like.

  The column main body 22 is made of a square tube-like shape, and is erected on the upper surface of the base plate 21 with one side faced to the roadway R. In the present embodiment, the shape member constituting the column main body 22 is made of square tube-shaped steel (square steel pipe). The base plate 21 and the column main body 22 are joined by performing fillet welding on the entire circumference of the abutting portion (boundary portion). The front surface 22a of the column main body 22 has three contact surfaces 22b for contacting the rear surface of the end portion of the hollow beam member 11 (see FIG. 2). An insertion hole 22 c that opens to the contact surface 22 b is formed in the front wall of the column main body 22. Insertion holes 22d, 22d, and 22d are formed in the rear wall of the column body 22 at the same height as the insertion holes 22c, 22c, and 22c formed in the front wall. A shaft portion of a bolt B2 (see FIG. 2) screwed into the female screw hole 12a of the connecting member 12 is inserted into the insertion holes 22c and 22d.

  The reinforcing member 23 is a member for enhancing the bonding strength between the base plate 21 and the column main body 22. In this embodiment, the reinforcing member 23 is disposed on each of the left and right sides of the column main body 22. It is joined to the side surface of 22 by fillet welding. In the present embodiment, the reinforcing member 23 is made of a steel plate having a substantially right triangle shape. Of the corners of the reinforcing member 23, corners 23b located at the boundary between the base plate 21 and the column main body 22 are cut away to avoid fillet welding applied to the boundary. The shape of the reinforcing member 23 is not limited to that shown in the figure, and may be, for example, a rectangle, a trapezoid, a polygon, or a fan.

  As shown in FIG. 4C, the reinforcing member 23 is a straight line that is in contact with the edge on the roadway side of the column main body 22 and is parallel to the horizontal member 10, and a cross section of the column main body 22. The front surface (surface facing the roadway R) 23a is a straight line passing through the centroid C and parallel to the intermediate reference line Q parallel to the horizontal member 10. The front surface (surface facing the roadway R) 23a (Surface facing the surface) 22a (see FIG. 2). That is, the reinforcing member 23 is disposed between the vertical plane including the front reference line P and the vertical plane including the intermediate reference line Q.

  When the vehicle comes into contact with or collides with the horizontal member 10 or the like, a force (tensile force) for peeling the column main body 22 from the base plate 21 acts on the joint portion (welded portion) between the base plate 21 and the column main body 22. However, since this force increases from the intermediate reference line Q toward the front reference line P, the reinforcing member 23 is as close to the front reference line P as possible (that is, the intermediate line between the front reference line P and the intermediate reference line Q). It is desirable that the front surface 22a of the column main body 22 and the front surface 23a of the reinforcing member 23 be ideally flush with each other. In the present embodiment, the reinforcing member 23 has an intermediate reference line that is equal to the thickness of the reinforcing member 23 from the front reference line P so that fillet welding can be easily and reliably performed at the abutting portion with the side surface of the column main body 22. It is arranged at a position close to the Q side.

  The left and right reinforcing members 23 are arranged on a straight line. That is, the left and right reinforcing members 23 are disposed in a vertical plane parallel to the front surface 22 a of the column main body 22.

  Two overhanging pieces 24 shown in FIG. 3 are arranged on each side surface of the column main body 22. That is, a pair of upper and lower projecting pieces 24 and 24 are arranged on both side surfaces of the column main body 22. An insertion hole 24 a is formed in the overhanging piece 24. As shown in FIG. 4A, the upper overhanging piece 24 is arranged between the middle horizontal member 10 and the lowermost horizontal member 10, and the lower overhanging piece 24 is The lowermost horizontal member 10 is disposed below.

  The lid plate 25 shown in FIG. 3 closes the opening at the upper end of the column main body 22. The outer shape of the lid plate 25 is formed to be substantially the same as the outer shape of the column main body 22 so that the opening at the upper end of the column main body 22 can be sealed.

  In order to install the column 20 thus configured on the upper surface of the foundation K, the shaft portion of the anchor bolt B3 is inserted through the insertion holes 21a, 21a,... At the four corners of the base plate 21, as shown in FIG. The base plate 21 is placed on the upper surface of the foundation K, and then the nut N3 is screwed into the shaft portion of the anchor bolt B3 protruding from the insertion hole 21a of the base plate 21.

  As shown in FIG. 2, in order to support the horizontal member 10 on the column 20, the boundary portion of the hollow beam members 11, 11 (that is, the portion where the connecting member 12 is disposed) is positioned on the front side of the column body 22. Then, the end of the rear surface of the hollow beam member 11 is brought into contact with the contact surface 22b of the column main body 22, and then the bolt B2 is inserted into the insertion holes 22c and 22d of the column main body 22 and the notch 11b of the hollow beam member 11. Is inserted into the female screw hole 12b of the connecting member 12 (see FIG. 4B). That is, after the horizontal member 10 is brought into contact with the contact surface 22 b of the column main body 22, the connecting member 12 may be fixed to the column main body 22 with one bolt B <b> 2 penetrating the column main body 22.

  The lattice 30 includes a pair of upper and lower horizontal members 31, 31 arranged in parallel with the horizontal member 10, and a plurality of vertical members 32, 32,... Arranged in the vertical direction between the horizontal members 31, 31. Configured. The cross member 31 is made of a steel section (an angle steel) having an L-shaped cross section, and an end portion thereof is illustrated corresponding to the insertion hole 24a (see FIG. 3) of the protruding piece 24 of the column main body 22. An insertion hole is formed. The vertical member 32 is made of a steel shape having a strip shape, and is joined to the horizontal member 31 by welding.

  In order to install the lattice 30 between the adjacent struts 20, 20, as shown in FIG. 4A, the upper cross member 31 is hooked on the upper projecting piece 24, and then the cross member 31 The bolt B4 may be inserted into the insertion hole (not shown) and the insertion hole 24a (see FIG. 3) of the overhanging piece 24, and the nut N4 may be screwed into the shaft portion.

  According to the vehicle guard fence G according to the present embodiment described above, the horizontal member 10 is fixed at one point by the bolt B2 on the surface (front surface 22a) facing the roadway R of the support body 22 as shown in FIG. In addition, it is possible to easily cope with the case where a slope is formed in the horizontal member 10 in accordance with a change in the road slope.

  Further, the column 20 according to the present embodiment shown in FIG. 3 can be manufactured by simply welding the column body 22 to the base plate 21 and welding the reinforcing member 23 to the base plate 21 and the column body 22. Cost can be reduced. In addition, since the reinforcing member 23 is welded to the base plate 21 and the column main body 22, the bonding strength between the base plate 21 and the column main body 22 is higher than when the reinforcing member 23 is omitted. That is, by providing the reinforcing member 23, it becomes possible to secure a weld length that is equal to or greater than the circumferential length of the column main body 22, and as a result, when the vehicle contacts and collides with the horizontal member 10, the joint portion is broken. It is possible to prevent preceding. As described above, when the vehicle contacts or collides with the horizontal member 10 or the like, a force (tensile force) for pulling the column main body 22 off the base plate 21 acts on the front side (the roadway side) of the joint portion. However, as shown in FIG. 4C, the support column 20 according to the present embodiment is positioned so that it can resist the tensile force (that is, between the front reference line P and the intermediate reference line Q). ) Is provided with the reinforcing member 23, the resistance to the tensile force is high.

  In addition, according to the present embodiment, since the entire circumference of the lower end portion of the column main body 22 is welded to the base plate 21, the tensile force does not concentrate on the reinforcement member 23 alone, and the column main body 22 and the reinforcement member 23 to act in a distributed manner. That is, according to the support column 20 according to the present embodiment, since it is not necessary to make the reinforcing member 23 heavy, it is possible to realize a clean aesthetics, and further, it is possible to reduce material costs. .

  In addition, according to the present embodiment, the reinforcing member 23 is disposed between the front reference line P and the intermediate reference line Q, does not protrude toward the roadway side from the front surface 22a of the column main body 22, and Since the horizontal member 10 is located closer to the roadway side than the column main body 22 or the reinforcing member 23, even if the vehicle deviates from the roadway and collides with the protective fence G for the vehicle, the vehicle directly There is no contact / collision with the column main body 22, and as a result, the vehicle can be guided smoothly.

  Furthermore, according to this embodiment, since the hollow beam member 11, the connecting member 12, and the column main body 22 are formed using a rectangular tube-shaped material that can be easily procured, the manufacturing cost can be reduced. It becomes.

  Further, according to the present embodiment, since one side surface of the column main body 22 faces the roadway R (see FIG. 3), the column main body 22 faces the surface (front surface 22a) facing the roadway. It becomes easy to attach the base material 10.

  Further, according to the present embodiment, the surface (front surface 23a) facing the roadway of the reinforcing member 23 is arranged in parallel with the surface (front surface 22a) facing the roadway of the support column main body 22 (see FIG. 4C). A harmonious appearance.

  Further, since the reinforcing members 23 are arranged on both the left and right sides of the column main body 22 and the left and right reinforcing members 23 and 23 are arranged in a straight line (see FIG. 4C), the tensile force acting on the column main body 22 Will be evenly distributed from side to side. That is, according to the support | pillar 20 which concerns on this embodiment, the junction part of the baseplate 21 and the support | pillar main body 22 becomes difficult to fracture | rupture.

  Note that the configuration of the various members described above may be changed as appropriate. For example, in the present embodiment, the hollow beam material 11 constituting the horizontal member 10 located at the uppermost stage has a rectangular cross section, and the hollow beam material 11 constituting the horizontal member 10 located at the middle and lowermost stages is a square shape. However, it is not intended to limit the cross-sectional shape of the hollow beam material 11, and for example, although it is not illustrated, it exhibits a cross-sectional polygon and a circular cross-section. There is no problem.

  In the present embodiment, the square columnar column main body 22 is exemplified, but the present invention is not limited to this. For example, as shown in FIG. Also in this case, the reinforcing member 23 is a straight line that is in contact with the edge of the column main body 22 on the roadway side and is parallel to the horizontal member 10 and a straight line passing through the centroid C of the cross section of the column main body 22. However, it may be arranged between the intermediate reference line Q parallel to the horizontal member 10.

  Moreover, you may abbreviate | omit the above-mentioned grating | lattice 30 like the guard fence G for vehicles which concerns on other embodiment shown in FIG. 7A is a cross-sectional view taken along the line X3-X3 of the front view (viewed from the road side) shown in FIG. 7B. In the vehicle guard fence G shown in FIG. 7, the same reference numerals are given to the same portions as those in the above-described embodiment, and the detailed description thereof is omitted, but in the other embodiments shown in FIG. The upper horizontal member 10 is formed of a shape having a larger cross section than the intermediate and lower horizontal members 10.

  Further, in the above-described embodiment, the case where the cross-sectional shapes of the three strips 10 are all different (see (a) in FIG. 4) is not limited thereto. The horizontal member 10 may have the same cross-sectional shape, or any two of the three horizontal members 10 may have the same cross-sectional shape as in the other embodiment shown in FIG. In the above-described embodiment, the case where the cross-sectional dimension of the middle horizontal member 10 is the largest is illustrated (see FIG. 4A), but the present invention is not limited to this, for example, FIG. As in other embodiments shown in FIG. 4, the cross-sectional dimension of the upper horizontal member 10 may be the largest.

  In the above-described embodiment, the hollow beam material 11 having a length equal to the interval between the adjacent struts 20 and 20 is exemplified, but the length of the hollow beam material 11 is not limited, and for example, illustration is omitted. It does not matter even if it has a length that allows it to be installed on three or more struts 20.

It is a perspective view which shows the guard fence for vehicles which concerns on this embodiment. It is a disassembled perspective view which shows the state which removed the horizontal member in the guard fence for vehicles which concerns on this embodiment. It is a disassembled perspective view of the support fence post according to the present embodiment. (A) is sectional drawing of the guard fence for vehicles which concerns on this embodiment, (b) is X1-X sectional view taken on the line of (a), (c) is X2-X2 sectional view similarly. It is an enlarged front view for demonstrating the effect of the guard fence for vehicles which concerns on this embodiment. It is sectional drawing which shows the modification of the support | pillar for protection fences concerning this embodiment. (A) is sectional drawing of the guard fence for vehicles which concerns on other embodiment, (b) is a front view.

Explanation of symbols

G Guard fence for vehicle 10 Horizontal member 11 Hollow beam material 12 Connecting member 20 Post (guard fence post)
21 Base plate 22 Column body 23 Reinforcement member P Front reference line Q Middle reference line C Centric center K Foundation R Roadway

Claims (8)

A support fence post that supports a horizontal member arranged along the roadway,
A base plate fixed to a foundation constructed along the roadway, a column main body joined to the upper surface of the base plate by welding, and a reinforcing member joined to the base plate and the column main body by welding. ,
The reinforcing member is a straight line that is in contact with an edge on the roadway side of the column main body and includes a vertical plane including a front reference line parallel to the horizontal member, and a straight line passing through the centroid of the cross section of the column main body. A protective fence support, which is disposed between a vertical plane including an intermediate reference line parallel to the horizontal member.   The said support | pillar main body consists of a square cylinder-shaped shape material, The support | pillar for protection fences of Claim 1 characterized by the above-mentioned.   3. The support fence post according to claim 2, wherein the support body is erected on the base plate with one side faced to the roadway. 4.   The support fence post according to claim 3, wherein a surface of the reinforcing member facing the roadway is parallel to a surface of the support body facing the roadway.   The support fence post according to claim 3 or 4, wherein the reinforcing member is disposed on both left and right sides of the support body.   6. The protective fence support according to claim 5, wherein the left and right reinforcing members are arranged in a straight line.   The said horizontal member is fixed at one point to the surface which faces the said roadway of the said support | pillar main body, The support | pillar for protection fences as described in any one of Claim 1 thru | or 6 characterized by the above-mentioned. A guard fence for a vehicle comprising a horizontal member installed along a roadway and a guard post for supporting the horizontal member,
The horizontal member is configured to include a plurality of hollow beam members arranged in a longitudinal direction and a connecting member disposed inside a boundary portion of the adjacent hollow beam members,
The protective fence support is configured to include a base plate, a support main body standing on the base plate, and a reinforcing member joined to the base plate and the support main body by welding ,
The reinforcing member is a straight line that is in contact with an edge on the roadway side of the column main body and includes a vertical plane including a front reference line parallel to the horizontal member, and a straight line passing through the centroid of the cross section of the column main body. It is arranged between the vertical plane including the intermediate reference line parallel to the horizontal member,
The hollow beam member and the connecting member are joined by a bolt,
The hollow beam material is in contact with the surface of the support body facing the roadway,
The vehicle protective fence according to claim 1, wherein the connecting member is fixed to the column main body by a single bolt penetrating the column main body.

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