JP2014237956A - Guard fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guard fence having a column of a front side fence body and a column of a rear side fence body without welding work, and also constituting the rear side column by using a U-shaped column body easy in handling.SOLUTION: In a guard fence 1, a second fence member 32 is provided behind a first fence member 22, and the first fence member 22 is supported by a first column 21 erected by fixing a lower part to a foundation, and the second fence member 32 is supported by a second column 31 erected at an interval behind the first column 21, and the first column 21 and the second column 31 is connected by connection means 4. The second column 31 is supported by the first column 21, and the second column 31 is constituted of two column bodies having a bottom plate part 313 and two mutually-opposed side plate parts 312 and having a cross section formed in a U shape, and the two column bodies are mutually connected by mutually opposing both bottom plate parts 313 so that their respective opening parts become the outside.

Description

  The present invention is preferably provided along a highway, a viaduct, a bridge, and the like, and a fence member such as a fall-preventing fence that prevents a fallen object or a projectile from a vehicle from falling outside the road. It relates to the protective fence provided.

  It is installed along expressways, viaducts, bridges, etc., and when a vehicle load falls from a vehicle or an empty can etc. is thrown away from a vehicle etc., the fallen object, projectile, etc. For a protective fence provided with a fence member for prevention of falling to prevent falling from roads, viaducts, bridges, etc., for example, at the rear of the protective fence column attached with a horizontal beam that receives the collision load of the vehicle For example, Patent Document 1 discloses a so-called integral support guard fence in which a fence mounting support for attaching a fall prevention fence is integrally fixed by welding.

JP 2004-218366 A

  However, in the case of a protective fence using an integral strut in which a fence mounting strut for attaching a fall prevention fence is integrally fixed to the rear of the guard fence strut that receives the collision load of the vehicle as described above, When creating an integrated strut, the guard fence strut and the fence mounting strut are fixed together by welding, so it must be manufactured so that the strut will not be distorted by welding, and it takes time to manufacture, In some cases, the support may be distorted by welding.

  The present invention is provided with a front column post and a rear rail column without using welding, and the rear column is configured using a U-shaped column that is easy to handle. It is intended to provide a protective fence.

In order to achieve the above object, the present invention is configured as follows.
That is, the protective fence according to the present invention is a protective fence in which the second fence member is provided behind the first fence member, and the first fence member is erected with the lower part fixed to the foundation. Supported by the first strut, the second fence member is supported by a second strut standing upright behind the first strut, and the first strut and the second strut And the second support column is supported by the first support column, and the second support column includes a bottom plate portion and two opposing side plate portions, and has a cross-section of the second support column. The two columnar bodies are connected to each other with both bottom plate portions facing each other such that the openings are on the outside. It is what.

According to the invention, the first support column and the second support column are connected by the connecting means, the second support column is supported by the first support column, and the second support column is the bottom plate portion. And two opposing side plate portions, and the two column bodies having a U-shaped cross section, the two column bodies having their respective openings on the outside, Since both the bottom plate portions are opposed to each other and connected to each other, the manufacturing work is not required without performing a welding operation.
Furthermore, since the second support column is configured by connecting two column bodies having a U-shaped cross section, the second support column is extremely easy to manufacture.

  In the protective fence according to the present invention, the connecting means is formed of a flat connecting bracket, and the connecting bracket is sandwiched between both bottom plate portions of two pillars constituting the second support column. It is characterized by being attached.

  According to the invention, the connecting means is formed of a plate-shaped connecting bracket, and the connecting bracket is attached so as to be sandwiched between both bottom plate portions of the two column bodies constituting the second support column. Therefore, the column body is lighter than a so-called H-shaped steel column, so that the work of lifting the column body at the construction site can be performed efficiently.

  Moreover, the protective fence according to the present invention is formed of a connecting member having a T-shaped plan view, in which the connecting means includes a vertical plate portion and a protruding plate portion protruding from the center of the vertical plate portion. The vertical plate portion is attached so as to straddle both side plate portions on the front side of the two pillars constituting the second support column.

  According to the invention, the connecting means is formed of a connecting member having a T-shape in plan view, which includes a vertical plate portion and a protruding plate portion protruding from the center of the vertical plate portion, and the vertical plate portion. However, since it is attached so as to straddle both side plate portions on the front side of the two columns constituting the second column, the column is lighter than a so-called H-type steel column. Therefore, it is possible to efficiently perform the work of lifting the column at the construction site.

  According to the protective fence according to the present invention, it is possible to efficiently perform the construction work of the protective fence in the field while having the support pillar of the front fence member and the support pillar of the rear fence member without using welding. Can be done automatically.

It is a front view which shows embodiment of the protection fence which concerns on this invention. FIG. 2 is a schematic side view of FIG. 1. It is an enlarged view which shows the principal part of the A section of FIG. It is sectional drawing of the BB part of FIG. (A) is a front view, (b) is a side view, and (d) is a plan view of the connecting metal fitting used in FIG. It is sectional drawing corresponding to FIG. 2 which shows another embodiment of the protection fence which concerns on this invention. FIG. 6A is a front view, FIG. 6B is a side view, and FIG.

Next, embodiments for carrying out the present invention will be specifically described with reference to the drawings.
First, the form shown in FIGS. 1 to 5 will be described.
Reference numeral 1 denotes a protective fence according to the present invention, which has a first fence body 2 and a second fence body 3 at the front and rear.

  Reference numeral 2 denotes a first fence body, which is provided at the front part of the second fence body 3, and the lower part thereof is fixed to an anchor bolt N projecting upward from the foundation concrete K, which is the foundation. Between the first support columns 21 erected on the concrete K, a first fence member 22 made of a transverse beam is passed in three stages and supported. Note that the first fence member 22 is not limited to the horizontal beam passed in three stages, but a vertical lattice-shaped panel body or a planar member such as a second fence body 3 described later. A panel body or the like with a frame member attached to the outer periphery may be used, or these may be attached to a transverse beam.

  3 is a second fence body provided behind the first fence body 2, and the second fence body 3 is when the protective fence 1 is installed along a highway, a viaduct, a bridge, etc. In addition, when a vehicle load falls from a vehicle or an empty can etc. is thrown away from a vehicle, the fallen object or projectile falls outside the road, that is, from a highway, a viaduct, a bridge, etc. A second fence member 32 made of a panel body is supported on a second column 31 that is provided for preventing the fall and is provided upright behind the first column 21 with a space therebetween. It is a thing. Unlike the first strut 21, the second strut 31 is not fixed to the ground concrete K with an anchor bolt N or the like, and is connected to the first strut 21 as will be described later. Are connected to each other and supported by the first support column 21, and the second support column 31 includes a bottom plate portion 313 and two opposing side plate portions 312, and has a U-shaped cross section. Each of the two pillars is connected to each other with both bottom plate parts 313 facing each other such that each opening is on the outside, and the both side plate parts 312 and A concave groove 311 is formed by the bottom plate portion 313.

  4 is a connection means for connecting the first support column 21 and the second support column 31, and is provided on the first connection portion 41 provided on the first support column 21 and the second support column 31. The shaft member 5 includes a second connecting portion 42 and a third connecting portion 43, and the first end 431 of the third connecting portion 43 extends in the left-right direction. The second shaft member 52 is a shaft member 5 that is connected to the first connecting portion 41 provided on the first support column 21 by the first shaft member 51 and the second end portion 432 extends in the left-right direction. Thus, the second connection portion 42 provided on the second support column 31 is connected. Of the connecting means 4, the second connecting portion 42 is formed of a flat connecting bracket, and the second connecting portion 42, which is the connecting bracket, includes two columns constituting the second column 31. It is attached so as to be sandwiched between both bottom plate portions 313 of the body.

  More specifically, the first column 21 includes a column body 211 to which the lateral beam 22 is attached and a flat base 212 to which the lower end of the column body 211 is fixed. The front flange 213 to which the transverse beam 22 is attached, the rear flange 214 opposite to the front flange 213, and the web 215 connecting the front flange 213 and the rear flange 214 are integrated, and these are integrated by welding. Yes. And the thread part of the anchor bolt N embed | buried in the ground concrete K is passed through the four bolt holes drilled in the base part 212, and it is made to fix with a nut.

  In the connecting means 4, the first connecting portion 41 is provided to project rearward from the rear side upper part of the rear flange 214 of the first column 21, and the flat plate has its front and back surfaces in the left-right direction. The base end faces are formed so as to face each other, and circular through holes for passing the first shaft member 51 are provided through the front and back surfaces. Moreover, the 2nd connection part 42 formed from the flat connection metal fittings is the both bottom plates of the two column bodies which comprise the 2nd support | pillar 31 so that the said 1st connection part 41 may be opposed. The circular through hole for passing the second shaft member 52 is provided on the front and back surfaces so as to protrude forward from the front side of the second column 31 so as to be sandwiched between the portions 313. Is provided. In addition, the third connecting portion 43 is a horizontally long flat plate with four corners chamfered in a side view, and is arranged with the front and back surfaces facing in the left-right direction, and the first end portion 431 and The second end portion 432 is also provided with a circular through-hole penetrating the front and back surfaces, the first connecting portion 41 and the first end portion 431 are overlapped on the left and right, and the second connecting portion The first shaft member 51 and the second shaft member 52, which are bolts extending in the left-right direction, are inserted into the respective through holes and are fixed by nuts. The first connecting portion 41, the second connecting portion 42, and the third connecting portion 43 are relatively rotatable by the first shaft member 51 and the second shaft member 52, respectively. So that they are connected.

  The second connecting portion 42 has an attachment plate portion 422 extending upward from the base end side of the connecting plate portion 421 extending in the direction of the first support column 21, and is formed in an L shape in a side view. Yes. The connecting plate portion 421 has a circular through-hole through which the second shaft member 52 is inserted when the second connecting portion 42 is connected to the second end 432 of the third connecting portion 43. 423 is provided. Further, the bolts and nuts BN are inserted into the mounting plate part 422 in a state where the second connecting part 42 is sandwiched between the two bottom plate parts 313 of the two column bodies constituting the second support column 31. Two circular through holes 424 are provided on the top and bottom.

  The connecting means 4 is also provided below the first support column 21 and the second support column 31. The connecting means 4 includes a first connecting portion 41 projecting rearward from an upper part on the rear side of the rear flange 214 of the first column 21 and a front projecting side toward the front side of the second column 31. The connecting means 4 is formed by being directly connected to the second connecting portion 42 provided so as to be relatively rotatable by the shaft member 5, and provided on the upper portion of the first support column 21. Unlike that, the third connecting portion 43 is not interposed therebetween.

  As described above, the second support column 31 includes two column bodies each having a bottom plate portion 313 and two opposing side plate portions 312 and having a U-shaped cross section. The body is arranged with both bottom plate portions 313 facing each other such that each opening is on the outside, and a second connecting portion 42, which is a plate-shaped connecting metal fitting, is sandwiched between the bottom plate portions 313. By fixing with two bolts and nuts BN up and down, both bottom plate portions 313 are connected to form the second support column 31. And the 2nd support | pillar 31 is connected with the 1st support | pillar 21 via the 3rd connection part 43 as mentioned above. The second support column 31 is erected with a gap and the concave groove 311 facing each other, and the left and right end portions 321 are inserted between the side walls 312 of the concave groove 311, respectively. A spring member S is mounted between the side plate portion 312 on the side and the back side of the end portion 321 of the second fence member 32 made of a panel body, and the end portion 321 of the second fence member 32 is recessed. It is pressed in the direction of the side wall 312 on the front side of the groove 311, the front side of the end portion 321 of the second fence member 32 is brought into contact with the side wall 312 on the front side, and the second fence member 32 has two steps up and down, That is, the second fence member 32 is composed of an upper fence member 32a and a lower fence member 32b, and the upper fence member 32a is stacked on the lower fence member 32b and supported by the second support column 31, A protective fence 1 according to the present invention is formed.

Next, another embodiment according to the present invention shown in FIGS. 6 and 7 will be described.
In this embodiment, it is the protection fence 1 by which the 2nd fence member 32 was provided in the back of the 1st fence member 22, Comprising: The 1st fence member 22 is standingly fixed by using the lower part as a foundation. The second fence member 32 is supported by the second pillar 31 that is erected with a space behind the first pillar 21, and is supported by the first pillar 21. 21 and the second support column 31 are connected by the connecting means 4, and the second support column 31 is supported by the first support column 21, and the second support column 31 includes the bottom plate portion 313 and two pieces. Both bottom plate portions are composed of two column bodies each having a U-shaped cross section with opposite side plate portions 312, and the two column bodies have their respective openings on the outside. The points 313 are opposed to each other and connected to each other are the same as in the embodiment described in FIGS. The linking means 4 is formed of a connecting bracket 44 having a T-shape in plan view, which is composed of a vertical plate portion 441 and a protruding plate portion 442 protruding from the center of the vertical plate portion 441, and the vertical plate portion 441 is The second column 31 is different from the embodiment shown in FIGS. 1 to 5 in that the two columns 31 are attached so as to straddle both side plate portions 312 on the front side.

  In other words, the T-shaped connecting bracket 44 in the present embodiment includes a vertical plate portion 441 and a protruding plate portion 442 protruding from the center of the vertical plate portion 441, and the vertical plate portion 441 has a protruding portion. A circular through-hole 443 for inserting one bolt and nut BN1 to the left and right of the installation plate portion 442 and fixing to the second support column 31 is provided. The vertical plate portion 441 straddles the two side plate portions 312 on the front side of the two pillars constituting the second support column 31 so that the back surface of the vertical plate portion 441 overlaps the front surface of the two side plate portions 312. The left and right sides of the protruding plate portion 442 are fixed with bolts and nuts BN1. The protruding plate portion 442 corresponds to the second connecting portion 42 formed from the flat plate-like connecting bracket in the embodiment shown in FIGS. 1 to 5, and the protruding plate portion 442. Are provided with a circular through hole 444 for passing the second shaft member 52 through the front and back surfaces, and the projecting plate portion 442 and the second connecting portion 43 are connected to the second connecting portion 43. The end portion 432 is overlapped on the left and right, and the second shaft member 52 made of a bolt extending in the left-right direction is inserted into each through hole and fixed with a nut, and the protrusion corresponding to the second connecting portion 42 is provided. The plate portion 442 and the third connecting portion 43 are connected by the second shaft member 52 so as to be relatively rotatable.

  In addition, as for the 2nd fence member 32, as for the upper fence member 32a and the lower fence member 32b, four outer periphery of the planar member 322 which formed the steel wire in the shape of a mesh vertically and horizontally is made from aluminum extrusion shape material. However, the present invention is not limited to this, and may be a resin plate such as polycarbonate resin or acrylic resin.

DESCRIPTION OF SYMBOLS 1 Guard fence 2 1st fence body 21 1st support | pillar 22 1st fence member 211 support body 212 base part 213 front flange 214 rear flange 215 web 3 2nd fence body 31 2nd support pillar 311 concave groove 312 side plate Part 313 Bottom plate part 32 Second fence member 32a Upper fence member 32b Lower fence member 321 End part 322 Planar member 323 Frame member 4 Connection means 41 First connection part 42 Second connection part 421 Connection plate part 422 Mounting plate portion 423 Through hole 424 Through hole 43 Third connecting portion 431 First end portion 432 Second end portion 44 T-shaped connecting metal fitting 441 Vertical plate portion 442 Projecting plate portion 443 Through hole 444 Through Hole 5 Shaft member 51 First shaft member 52 Second shaft member N Anchor bolt BN Bolt / nut BN1 Bolt / nut K Ground concrete S Spring member

Claims (3)

  A protective fence in which a second fence member is provided behind the first fence member, the first fence member being supported by a first column that is erected with the lower part fixed to the foundation, The second fence member is supported by a second support column standing upright behind the first support column, and the first support column and the second support column are connected by a connecting means. The second column is supported by the first column, and the second column includes two columns each having a bottom plate portion and two opposing side plate portions and having a U-shaped cross section. A protective fence comprising a body, wherein the two columnar bodies are connected to each other with both bottom plate portions facing each other such that each opening portion is on the outside.   The connecting means is formed of a flat plate-like metal fitting, and the metal fitting is attached so as to be sandwiched between both bottom plate portions of two pillars constituting the second support column. The protective fence according to claim 1.   The connecting means is formed of a connecting member having a T-shape in a plan view including a vertical plate portion and a protruding plate portion protruding from the center of the vertical plate portion, and the vertical plate portion is a second support column. The protective fence according to claim 1, wherein the protective fence is attached so as to straddle both side plate portions on the front side of the two pillars constituting the frame.

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