JP2012102526A - Installation method, installation structure and attaching metal fitting for falling object prevention fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installation method, an installation structure and an attaching metal fitting suitable for installation construction of a falling object prevention fence in a wire mesh structure.SOLUTION: Following a bottom part 50 joined with the lower part of a column 40 for a fence at one side part and extended toward a column 30 of a protective fence 3 bypassing the lower edge of a face bar installation scheduled position, a rising part 51 along the side face of the protective fence column 30 is formed. The rising part 51 is joined to the side face of the protective fence column 30 by bolts 7 to fit the column 40 for the fence, and furring strips 42 are attached to the upper and lower parts of the column 40 for the fence. A face bar 41 is installed along the column 40 for the fence and the furring strips 42, an auxiliary metal fitting 6 is disposed between the part above the rising part 51 of the attaching metal fitting 5 on the side face of the protective fence column 30 and the facing part of the column 40 for the fence thereafter, and the auxiliary metal fitting 6, the protective fence column 30 and the column 40 for the fence are joined by bolts.

Description

  This invention is a case where a protective fence is installed along the roadside of the road, and a tall fallen object prevention fence is installed in a double structure, regardless of whether the protective fence is newly installed or existing. It belongs to the technical field of installation method and installation structure suitable for installation construction of falling object prevention fence of wire mesh structure, and mounting bracket.

Conventionally, it is known and well known that protective fences such as railings are installed along the road, but a tall fallen object prevention fence is also installed, and empty cans are thrown away to private houses, cross roads, railways, etc. Measures have already been implemented to prevent damage that may occur and to prevent unexpected accidents caused by dumped items.
For example, the railing column described in the following Patent Document 1 is provided with a semicircular rail fitting portion that supports a guard rail (beam pipe) on the side surface on the road side, and is on the side opposite to the road (sidewalk side or private side). Protruding pieces that support fence iron frames (fence struts) are provided on the side surfaces of the ground side, etc., and the fence iron frames are erected using the protruding pieces, along the road side surface of the fence iron frames in the longitudinal direction of the road A configuration in which a face member having a wire mesh structure is attached is disclosed.
In addition, the protective fence described in the following Patent Document 2 has a protective fence body built on the side of the road of the protective fence post, and a connecting piece on the back side (sidewalk side or private side) of the protective fence post. , And use the connecting piece to attach shielding fence posts that support the shielding fence (falling object prevention fence), and install each vertical frame of the mounting frame material provided on both side edges of the shielding fence pillar in the road direction. A structure is disclosed in which a vertical edge portion of a shielding fence (discard prevention fence panel) is inserted and attached to a groove.

In addition, as shown in FIGS. 9A and 9B and FIGS. 10A and 10B, the existing fallen object prevention fence is constructed by installing a steel railing column 30 on the upper surface of the concrete railing 2 raised on the roadside portion of the road 1. The protective fence 3 is constructed by supporting a protective pipe 31 extending in the longitudinal direction of the road at the upper end of the railing column 30.
Further, support brackets 32 are attached to two upper and lower sides on the side opposite to the road of the railing column 30 (such as a sidewalk side or a private side), and a mounting bracket 49 of the fence column 40 is bolted to the support bracket 32. The fence post 40 is vertically set up, and a trunk edge 42 is attached in the longitudinal direction of the road above and below the road side surface of the fence post 40 to construct a fence foundation (frame structure). In addition, along the road side surface of the trunk edge 42, a tall face material 41 made of a wire mesh is attached in the longitudinal direction of the road.

Japanese Utility Model Publication No. 55-44833 JP-A-9-1111725

It is recognized that the fallen object prevention fences described in Patent Documents 1 and 2 and the existing fallen object prevention fence shown in FIG. 9 each perform the intended function.
However, in both the fallen object prevention fence of Patent Document 1 and the existing fallen object prevention fence shown in FIG. 9, the fence post is set up on the sidewalk side or the private side opposite to the road, It is attached by means such as bolting via a support fitting. Since it is configured to attach the face material (wire mesh) after that, the panel (wire mesh) at the part where the face material intersects with the protruding piece (support metal fitting) that supports the fence iron frame (fence post) The relevant part of the wire is cut in the required length in the vertical direction in advance, and the wire mesh is cut in advance to a certain length in the longitudinal direction of the road, and the cutting part is inserted downward from above to project the projecting piece. There was no other choice but to install it. For this reason, cutting of the face material (wire mesh) and pasting (or erection) of the face material are very troublesome and time consuming, prolonging the installation work period and increasing the cost.

  Also, in the case of the falling object prevention fence described in Patent Document 2, the face material is prepared by cutting in advance to the interval dimension of the shielding fence support supporting the same surface material, one by one. Since it is a structure that is installed by inserting both side edges into the vertical groove of the mounting frame material provided on the shielding fence post, it takes time to cut and process the face material, and the pasting (building) The work was cumbersome, requiring a lot of labor, prolonging the construction period, and increasing the cost.

  And in the case of the prior art which concerns on the said patent document 1, if work space is ensured on the sidewalk side opposite to a road, or a private side, etc., it will become the structure which is easy to carry out work. On the other hand, under conditions where work space cannot be secured at all, such as overpass roads or three-dimensional crossing roads, it is difficult to install a fallen object prevention fence, and it is very unreasonable or dangerous. Forced to work in a posture that involves. For this reason, the installation work of the fallen object prevention fence is difficult, and it is troublesome and requires a lot of labor, prolonging the construction period and increasing the cost.

Therefore, the object or solution of the present invention is that a protective fence such as a railing is installed along the extending direction of the road, and a tall fallen object prevention fence is provided behind the protective fence (opposite the road). When installed side by side, the installation of the fallen object prevention fence can be carried out in a safe and easy posture basically from the road side. The object is to provide an installation method and an installation structure for a fall prevention fence that is convenient for installation under a condition where a work space cannot be secured on the private side.
The next object of the present invention is to make a cut to avoid (straddle) the support member of the fence post on the same face material for each position of the fence post for the installation work of attaching the face material by the wire mesh to the fence post. In addition, the face material made of wire mesh is prepared in advance with the necessary length wound like a wrapping paper, and workers standing at the work position on the road side of the fence post position extend the road. A method for setting up a fence post for a fallen object prevention fence and a mounting bracket used for the method are provided, which makes it possible to carry out an installation work of rewinding and sticking to a fence post while sequentially moving in the direction. That is.

As a means for solving the problems of the prior art, the installation method of the falling object prevention fence according to the invention described in claim 1 is:
It is an installation method of a fallen object prevention fence in which a fallen object prevention fence 4 is attached to a protective fence 3 installed in an extending direction along the roadside of the road using a mounting bracket,
One side portion of the mounting bracket 5 is joined to the lower portion of the fence post 40, and detours the lower edge of the face material installation planned position of the falling object prevention fence 4 toward the column 30 of the protective fence 3. Following the extending bottom portion 50, a rising portion 51 is formed that rises along the side surface of the protective fence post 30 opposite to the road 1, and the rising portion 51 is opposite to the road 1 of the protective fence column 30. A step of attaching the fence post 40 by joining with a bolt 7 to the side surface of the side, and a step of attaching a trunk edge 42 along the road extending direction above and below the road side surface of the fence post 40;
Installing a face material 41 along the road side surface of the fence post 40 and the trunk edge 42;
After that, the auxiliary metal fitting 6 is disposed between the part above the rising portion 51 of the mounting bracket 5 on the side opposite to the road 1 of the guard fence post 30 and the part facing the fence post 40, The auxiliary metal fitting 6 is composed of a step of bolting the protective fence post 30 and the fence post 40 to each other.
The invention described in claim 2 is the installation method of the fallen object prevention fence described in claim 1,
The face material 41 is installed by winding up a length that can be constructed in the extension direction of the road 1 like a wrapping paper, and proceeding with the installation work while sequentially rewinding it in the extension direction of the road 1. Features.

The method for setting up the fence post according to the invention described in claim 3 is:
This is a method of setting up a fence post 40 in which a fence post 40 of a fallen object prevention fence 4 is attached in an upright posture by a mounting bracket 4 to a post 30 of a protective fence 3 installed in an extending direction along the road side of the road 1. And
One side portion of the mounting bracket 5 is joined to the lower portion of the fence post 40 and extends toward the protective fence column 30 by bypassing the lower edge of the face material installation planned position of the fallen object prevention fence 4. Following the bottom portion 50, a rising portion 51 is formed that rises along the side surface of the protective fence column 30 opposite to the road 1, and the rising portion 51 is formed on the side surface opposite to the road of the protective fence column 30. The step moves to the step of assembling the fallen object prevention fence 4 after the step of joining with the heavy bolt 7 and setting the fence support 40.

The mounting bracket of the fence post according to the invention described in claim 4 is:
Fence post mounting brackets for setting the fence post 40 of the fall prevention fence 4 to the support post 30 of the protective fence 3 installed in the extending direction along the road side of the road 1,
The mounting bracket 5 circumvents the fence post mounting portion 52 joined to the lower portion of the fence post 40 and the lower edge of the face material installation planned position of the falling object prevention fence 4 so as to bypass the protective fence post 30. A bottom 50 extending toward the
Following the bottom portion 50, a rising portion 51 that rises along the side surface of the protective fence post 30 opposite to the road 1 is formed.

The invention described in claim 5 is the mounting bracket for the fence post according to claim 4,
The fence post mounting portion 53 of the mounting bracket 5 and the lower part of the fence post are integrally joined in advance by welding or bolt joining.

According to the installation method of the falling object prevention fence according to the invention described in claims 1 and 2, and the method for setting up the fence post according to the invention described in claim 3, all the installation work of the falling object prevention fence 4 is performed. Since it can be done at the road side position rather than the position of the fence support 40, it is convenient for installation work under conditions where work space cannot be secured on the sidewalk side or private side, especially over the bridge bridge road or three-dimensional intersection road, Highly safe construction can be easily done in a short construction period.
In particular, with respect to the work of installing (pasting) the face material 41 (such as a wire mesh) of the falling object prevention fence 4 on the fence post 40 and the trunk edge 42, the fence post 40 is supported on the protective fence post 30 as in the past. There is no need to work on the cuts straddling the metal fittings, and the work for that amount can be saved. In addition, the same surface material 41 can be applied to the fence support 40 directly in the horizontal direction. Therefore, the face material 41 is prepared in advance in a state where the length allowed for work is wound like a wrapping paper, and an operator standing at a position closer to the road side than the fence post 40 sequentially moves in the road extending direction. However, it is possible to carry out the installation work of rewinding and sticking to the fence support 40. Therefore, the work efficiency is dramatically increased as compared with the prior art, and a great effect can be obtained in shortening the work period and reducing the cost.
In addition, since the mounting bracket 5 according to the invention described in claims 4 and 5 can be integrally joined to the lower portion of the protective fence support 30 in advance by factory processing, by welding or by means such as bolt joining, The quality of the joint portion can be ensured, and field work can be omitted. Then, it is possible to carry out the above-described method for setting up the fence posts, and as a result, when performing the installation method of the falling object prevention fence, it is not necessary to cut the face material 41, thereby saving the work. In addition, the same surface material 41 can be installed by a horizontal working method applied directly to the fence post 40 in the horizontal direction, and the working efficiency can be further improved, and the construction period can be shortened.

A is an elevation view of a protective fence and a fallen object prevention fence installed according to the present invention as viewed from the road side, and B is a cross-sectional view taken along line I-I indicated in FIG. A is an enlarged cross-sectional view taken along the line II-II indicated in FIG. 1B, and B is a structure in which the fallen object prevention fence has been installed when viewed in the direction indicated by the arrow II'-II 'indicated in FIG. FIG. 3C is an elevation view showing a lower portion of the fence post, and FIG. 3C is an elevation view showing a stage in which the fence post is placed on the protective fence post via the mounting bracket. A and B are a plan view and an elevation view showing a state in which the mounting bracket is joined to the lower portion of the fence post, and C is a right side view of the mounting bracket. Furthermore, D is an elevational view showing an embodiment in which the mounting bracket is joined to the lower part of the fence post and the embodiment is different from FIG. A is an elevation view showing the second embodiment of the present invention from the same viewpoint as FIG. 2B, B is a right side view of an ellipse b indicated in FIG. A, and C is a body edge fixing bracket used for A and B. It is a side view and a front view. FIGS. 4A and 4B are a plan view and an elevation view showing a state in which the mounting bracket for setting the fence post to the protective fence post is joined to the lower part of the fence post, which is used in the second embodiment shown in FIG. 4A; It is a right view. A is a diagram in which the hook member 43a is arranged, and B and C are diagrams before the hook member 43a is arranged. A is an elevation view showing the installation structure of the guard fence and falling object prevention fence according to the third embodiment of the present invention as viewed from the road side, and B is a sectional view taken along the line VI-VI indicated in FIG. is there. 6A is a cross-sectional view taken along the line VII-VII in FIG. 6B, B is an elevation view taken along the line VII'-VII 'shown in FIG. A, and C is a guard fence for the fence post through the mounting bracket. It is the elevation view which showed the state stood on the support | pillar. A to C are a plan view, an elevation view, and a right side view showing a state in which the mounting bracket for standing the fence post to the guard fence post used in Example 3 is joined to the lower part of the fence post. is there. A is an elevation view showing the installation state of a conventional protective fence and falling object prevention fence as viewed from the road side, and B is a cross-sectional view taken along the line IX-IX indicated in FIG. 9A is a cross-sectional view taken along line XX in FIG. 9B, and FIG. 9B is an elevation view showing a mounting bracket portion in FIG.

According to the first and second aspects of the present invention, the fallen object prevention fence is installed by attaching the fallen object prevention fence 4 to the protective fence 3 installed in the extending direction along the road side of the road 1 using the mounting bracket 5. Implement as the installation method.
The mounting bracket 5 is joined to the lower portion of the fence post 40 by joining one side portion thereof (fence post mounting portion 53), bypassing the lower edge of the face material installation planned position of the falling object prevention fence 4 and the protective fence. 3 is formed by forming a rising portion 51 that rises along a side surface of the protective fence post 30 opposite to the road 1, and extends from the bottom portion 50 extending toward the column 30. 30 steps of connecting the fence post 40 to the side opposite to the road 1 with bolts 7 and setting the fence post 40;
Attaching the rim 42 along the road extending direction above and below the road side surface of the fence post 40;
Installing (pasting) a face material 41 (metal mesh) along the road side of the fence post 40 and the upper and lower trunk edges 42;
After that, the auxiliary metal fitting 6 is arranged between the part above the rising part 51 of the mounting metal fitting 5 on the side opposite to the road 1 of the guard fence post 30 and the part facing the fence post 40, The auxiliary metal fitting 6, the guard fence post 30 and the fence post 40 are joined by bolting.
In this case, the installation work of the face material 41 is prepared by winding up the length that can be constructed in the extension direction of the road 1 in advance in the form of a wrapping paper, and then rewinding it in the extension direction of the road. Proceed with work to do.

According to the third aspect of the present invention, the fence support post 40 is attached to the support pillar 30 of the protective fence 3 installed in the extension direction along the road side of the road 1. It is a method of mounting in an upright position with the bracket 5,
The mounting bracket 5 has one side portion (fence post mounting portion 53) joined to a lower portion of the fence post 40, and bypasses the lower edge of the face material installation planned position of the fallen object prevention fence 4 to bypass the lower end. Following the bottom 50 extending toward the protective fence post 30, a rising portion 51 is formed that rises along the side of the protective fence post 30 opposite to the road 1,
In the procedure which goes to the step of assembling the face material 41 through the step of joining the rising portion 51 to the side surface of the protective fence post 30 opposite to the road 1 with the bolt 7 and standing the fence post 40. carry out.

Further, the fence support bracket 5 according to the invention described in claim 4 is attached to the support post 30 of the protection fence 3 installed in the extending direction along the road side of the road 1 and to the support post 40 of the fall prevention fence 4. It is used as a means to set up
The mounting bracket 5 includes a fence post mounting portion 53 joined to a lower portion of the fence post 40, and
A bottom 50 extending around the protective fence post 30 around the lower edge of the face material installation planned position of the falling object prevention fence 4;
Following the bottom portion 50, a rising portion 51 that rises along the side surface of the protective fence post 30 opposite to the road 1 is formed.
The fence post mounting portion 53 of the mounting bracket 5 and the lower portion of the fence post 40 can be integrally joined in advance by welding or bolt joining.

First, FIGS. 1A and 1B show a fallen object prevention fence 4 attached to a protective fence 3 installed in an extending direction along the road side of the road 1 by using a mounting bracket 5 according to the installation method of the fallen object prevention fence according to the present invention. Example 1 is shown.
The fallen object prevention fence 4 shown in FIG. 1 is a steel railing regardless of whether it is newly installed or existing on the upper surface of the concrete railing 2 erected along the road side of the road 1. Assuming that the protective fence 3 is installed in advance, a fallen object prevention fence 4 is installed using a mounting bracket 5 at a position opposite to the road 1 of the protective fence 3. .
An example in which a rhombus wire mesh is used for the face material 41 of the falling object prevention fence 4 is shown. The same surface material 41 is installed by attaching the upper and lower horizontal end edges to the trunk edges 42 and 42 by the angle attached in the horizontal direction to the upper and lower sides of the fence support column 40 using a metal mesh mounting bracket. Since the details of the mounting structure are already known and well known, detailed illustration and description thereof will be omitted.
Incidentally, although detailed illustration of the configuration of the protective fence 3 shown in FIG. 1 is omitted, the upper end of the protective fence column (railing column) 30 standing at a certain interval in the longitudinal direction of the road 1 Although a configuration in which a protection pipe (beam pipe) 31 in the road extending direction is supported is shown, since this configuration is already known and well known, detailed illustration and description are omitted. However, it does not mean that the structure of the protective fence 3 is limited to the structure by the steel railing. As long as the protection fence post 30 can be used for the installation of the fallen object prevention fence 4 in the configuration described later, the specific configuration thereof does not matter. For example, reference will preferably be made to the embodiment of FIGS.

According to the present invention, on the premise that the guard fence 3 having the above-described configuration is installed in advance, regardless of whether it is a new construction or an existing construction, the falling object prevention fence 4 is as follows. Installed.
2B and 3B, the steel mounting bracket 5 is such that one side portion (the left side portion in the figure) of the bottom portion 50 is a fence post mounting portion 53, and a vertical posture is provided on the upper surface thereof. The bottom surface of the fence support 40 is abutted, and in the illustrated example, it is integrally joined by welding. As shown in FIGS. 2B and 2C, the bottom 50 bypasses the lower edge of the face material 41 at the position where the face material is planned to be described later (submerge the lower edge) toward the column 30 of the protective fence 3. Extend. Then, following the bottom portion 50, a series of rising portions 51 rising along the side surface (the left side surface in FIG. 2B) opposite to the road 1 of the protective fence column 30 is formed. As a whole, it is configured in an L shape. Further, as shown in FIG. 3C, the rising portion 51 is provided with two (but not limited to) two bolt holes 52 on the left and right of the upper portion.
As shown in FIG. 2, the mounting bracket 5 is arranged so that the bottom surface of the bottom portion 50 is in contact with the top surface of the concrete rail 2, the rising portion 51 is brought into contact with the side surface opposite to the road 1 of the protective fence column 30, By using the two bolt holes 52 to firmly join the guard fence post 30 and the bolt 7, the fence post 40 can be set in a vertical posture.
Incidentally, a lightweight hat-shaped steel having a length of about 1.5 m is used for the fence post 40 shown in the figure. Since a steel plate having a thickness of about 6 mm is used for the mounting bracket 5, the fence column 40 is stable by firmly joining the rising portion 51 of the mounting bracket 5 to the side surface of the protective fence column 30 with the bolt 7. Can stand upright. FIG. 2A shows that the guard fence support 30 is configured using H-section steel.

As described above and shown in FIG. 2B, the fence post 40 is stably attached to the guard post 30 by the mounting bracket 5 at each position of the existing guard post 30 arranged in the extending direction of the road 1. I will stand up. Incidentally, the distance in the road extension direction between the protective fence column 30 and the fence column 40 is generally 2 m or less.
After the fence post 40 is set in the vertical posture as described above, the upper and lower end edges of the face member 41 are supported at the upper and lower positions of each fence post 40 in the same manner as in the past construction. (Angle) 42 and 42 are attached, and a fence foundation (frame structure) prepared for the work of attaching and installing the face material 41 is constructed.
As shown in FIGS. 2B and 2C, the attachment of the trunk edge (angle) 42 is performed in advance in a position where the trunk edge 42 is to be attached in the fence post 40 as shown in part in FIGS. 2B and 2C. Thus, a receiving hook 43 is formed, and a tip end edge of one side parallel to the side surface of the fence support 40 is inserted into the receiving hook 43 and supported. Then, a metal fitting 44 hooked to the tip edge of the other side protruding horizontally from the side surface of the fence post 40 is attached, and the long bolt 45 is passed through the metal fitting 44 hooked in the direction opposite to the road 1. Further, the long bolt 45 is also passed through a horizontal bolt hole previously provided in the fence post 40, and is fixed to the side surface of the fence post 40, which is a position behind the bolt hole, by spot welding or the like. The body rim 42 is attached by screwing in and tightening strongly.
Incidentally, FIG. 2B shows a configuration in which the lower trunk edge (angle) 42 is attached to the fence post 40. The upper trunk edge 42 is also attached to the fence post 40 with the same configuration. However, the assembly of the fence foundation (frame structure) including the installation of the trunk edge 42 is not limited to the above configuration.

As described above, as a work process after the construction of the fence foundation (frame structure) is completed, installation is performed such that the face material 41 (diamond wire mesh) is attached along the road side surfaces of the fence posts 40 and the trunk edge 42. Proceed with work.
Regarding the installation work for attaching the face material 41 to the fence base, the bottom 50 of the mounting bracket 5 is the face material at the position where the face material to be installed is installed as described above, as is apparent from the comparison between FIGS. 2B and 2C. The face material 41 is simply inserted between the protective fence post 30 and the fence post 40 in FIG. 2B, and is directly placed in the fence. By the work method of pressing against the road side surface of the support column 40 in the horizontal direction, it is possible to proceed with the installation work easily. Therefore, as in the prior art, the face material 41 is cut so as to straddle the bracket at every position of the bracket (see reference numeral 32 in FIG. 9B and reference numeral 49 in FIG. 10) that connects the protective fence support 30 and the fence support 40. There is no need for machining, so no cutting work is required.
In addition, the face material 41 (diamond wire mesh) is prepared in a state of being wound up in advance like a wrapping paper, with the length (one work division) that can be constructed in the extending direction of the road 1 as one unit. Rotate and rewind along the upper and lower trunk edges 42 of the construction fence base in the longitudinal direction of the road 1, unfold into a long band, and insert the lower part between the protective fence post 30 and the fence post 40. By a simple operation of pressing and stopping the fence post 40 and the upper and lower trunk edges 42, 42 on the road side surface, the pasting work can be efficiently performed.

  Incidentally, as described above, the fence post 40 and the face material 41 pressed against the road side surfaces of the upper and lower trunk edges 42, 42 have a horizontal bone line of about φ4 mm passed in the road extending direction so as to knit the upper and lower edges. A well-known and well-known wire mesh press fitting is fixed to the upper and lower barrel edges 42, 42 by means of fastening them to the barrel edge 42 with bolts and nuts. It is also well known that the transverse bone line 47 having a diameter of about 4 mm is also passed through the intermediate direction in the height direction of the face material 41 so as to be knitted in the road extending direction.

As shown in FIG. 2B, the work process after the face material 41 is stuck to the fence base having the above structure and fixed by the above procedure is the side surface of the protective fence post 30 opposite to the road 1. The auxiliary metal fitting 6 straddling between the part above the upper end of the rising part 51 of the mounting metal 5 and the part facing the fence post 40 is disposed. Then, by firmly joining the auxiliary metal fitting 6, the guard fence post 30 and the fence pillar 40 with the bolts 7 ', the fence pillar 40 and the face material 41 are integrated with the guard fence pillar 30, The installation work for the fallen object prevention fence 4 is completed.
Although the illustrated auxiliary metal fitting 6 has a downward U-shape, as described above, the fence post 40 is combined with the protective fence post 30 so that the installation state of the fence post 40 is sufficiently strong. As far as possible, the material, shape and structure are not limited.
Further, the nut 7 a for screwing and fastening the bolt 7 ′ for joining the auxiliary metal fitting 6 and the fence post 40 is positioned at the rear side position aligned with the bolt hole provided in advance in the corresponding position of the fence post 40. If it is fixed beforehand by spot welding or the like, it is convenient that the fastening work by the bolt 7 'is easy and it is not necessary to take a dangerous posture.

  3D, as is clear from FIG. 3B, in FIG. 3B, one side portion (the left side portion in the figure) of the bottom portion 50 of the steel mounting bracket 5 is a series of horizontal fence post attachment portions 53. In addition, a configuration is shown in which the lower surface of the fence post 40 in a vertical posture is abutted on the upper surface and integrally joined by welding. On the other hand, FIG. 3D shows a different embodiment in which a fence post mounting portion 53 that rises along a side surface opposite to the road of the fence post 40 is formed on one side portion (left side portion of the figure) of the bottom 50 of the mounting bracket 5. The fence post support portion 53 is formed and joined to the fence post 40 by fastening a plurality of bolts 48 and nuts 49. In short, the structure of the integral joint between the fence post 40 and the fence post attachment portion 53 is an example of various implementations as appropriate.

Next, FIG. 4 represents Example 2 of the installation structure of the fallen object prevention fence by this invention from the same viewpoint as FIG. 2B which showed the said Example 1. FIG.
4 clearly shows the installation example of the fallen object prevention fence shown in FIG. 2B and FIG. 3B in comparison with the first embodiment shown in FIGS. 2B and 3B. 3D, the left side portion of the fence is formed on a vertical bent side that rises along the side of the fence post 40 on the road side, and the fence post attachment portion 53 is formed on the road side of the fence post 40 on the road side. The structure also joined integrally by the welding along the side surface is shown. In the case of the second embodiment, the lower surface of the bottom 50 of the mounting bracket 5 and the lower end surface of the fence post 40 are configured at the same level.
In the case of the present embodiment, the height of the fence post mounting portion 53 in the mounting bracket 5 is raised by machining a part of the side wall of the fence post 40 in the embodiment as shown in FIG. 5B. As a means to replace the receiving hook 43 formed in step 1, a hook member 43a shown in FIG.
In short, as shown in FIGS. 4A and 4B, the vertical side of the trunk edge 42 attached to the fence post 40 is instructed to the receiving hook 43 ′ of the hook member 43 a and is latched to the tip edge of the other side protruding horizontally. A long bracket 45 is passed through the bracket 44 that is hooked in the opposite direction to the road 1, and the hook member 43a is also penetrated. The bolt 45 is provided in the fence post 40 in advance. The barrel edge 42 is attached by screwing and tightening from a horizontal bolt hole to a nut 46 fixed to the side surface at the rear side position by spot welding or the like.

Therefore, also in the case of the second embodiment, body edges (angles) 42 and 42 for supporting the upper and lower end edges of the face material 41 are attached to the upper and lower positions of each fence post 40 so that the face material 41 is attached. The construction of a fence foundation (frame structure) prepared for work is the same as in the first embodiment.
The configuration for attaching the lower trunk edge 42 to the fence post 40 is only different in that the hook member 43a shown in FIG. 4C is used.
However, as is apparent from the above configuration, the vertical side portion 53 of the mounting bracket 5 can be implemented by a configuration in which the vertical side portion 53 of the mounting bracket 5 is integrally joined to the side surface of the fence post 40 by bolting.

  As described above, as a work process after the construction of the fence foundation (frame structure) is completed, the work of attaching the face material 41 (diamond wire mesh) to the fence foundation along the road side surface of the fence post 40 is performed. And the auxiliary metal fitting 6 straddling between the upper part of the side of the protective fence post 30 opposite to the road 1 and the part of the fence post 40 facing the same is arranged. It is the same as the first embodiment that the supporting work for the fallen object prevention fence 4 is completed by firmly joining the support pillar 30 and the fence support pillar 40 with bolts 7 ′ to form an integrated structure.

Next, FIGS. 6 to 8 show a third embodiment of the installation structure of the falling object prevention fence according to the present invention.
The fallen object prevention fence 4 of the third embodiment is different from the first embodiment shown in FIG. 1 in that the guard fence 3 is configured as a guard rail, as is clear from the first embodiment.
That is, a cylindrical tube as a protective fence post 36 is set up on the upper surface of the concrete railing 2 with a certain interval in the extending direction of the road 1, and the beam 35 is bolted to the side of the road of the protective fence post 36 for protection. The fence 3 is constructed.

On the other hand, the installation of the fallen object prevention fence 4 is similar to the configuration of the first embodiment as seen in FIGS. That is, one side (left side in the figure) of the bottom 50 of the mounting bracket 5 is a fence post mounting portion 53, and the lower end surface of the vertically extending fence post 40 is abutted on the upper surface of the mounting bracket 5 and integrated by welding. It is joined to. Further, the bottom 50 bypasses the lower edge of the face material 41 at the planned installation position and extends toward the support column 36 of the protective fence 3, and the right side portion in the drawing is bent upward in the vertical direction. The column 36 is formed as a rising portion 51 that rises along the side surface opposite to the road.
Then, both ends of the U-bolt 37 hung from the road side to the outer periphery of the protective fence post 36 are passed through two bolt holes 52 (see FIG. 8C) provided in the upper portion of the rising portion 51, and the nut 38. Are fastened, and the mounting bracket 5 is fixed and the fence post 40 is erected.

As described above, after setting up the fence posts 40 for each position of each guard fence post 36, the vertical positions of the fence posts 40 are the same as the steps described in the first embodiment. In addition, trunk edges (angles) 42 and 42 for supporting the upper and lower end edges of the face material 41 are attached, and a fence base (frame structure) for constructing the face material 41 for pasting is constructed.
The attachment of the trunk edge (angle) 42 is already known and well known in the case of the third embodiment, and as shown in FIG. 2B and FIG. The front edge of one side parallel to the side surface of the fence post 40 is inserted into the receiving hook 43 formed by raising and supported. Then, a metal fitting 44 that is hooked to the tip edge of the other side that protrudes horizontally from the side surface of the fence post 40 is attached, and the long bolt 45 is passed through the hook 44 that is hooked in the direction opposite to the road 1. Furthermore, it is also passed through a horizontal bolt hole previously provided in the fence post 40, and screwed into a nut 46 fixed by spot welding or the like to the side surface of the fence post 40 that is behind the bolt hole. By fastening, the lower trunk edge 42 is attached.
Incidentally, FIG. 7C shows an intermediate stage in which only the lower trunk edge 42 is attached to the fence post 40. The upper trunk edge 42 is also attached to the fence post 40 with the same configuration. However, the construction of the fence foundation (frame structure) is not limited to the above-described configuration.

After the construction of the fence foundation (frame structure) is completed as described above, as a subsequent work process, a face material 41 (diamond wire mesh) is attached and installed along the road side surface of the fence post 40 and the trunk edge 42. The work is the same as in the first embodiment.
Further, regarding the work method of attaching the face material 41 to the fence base as described above, the bottom 50 of the mounting bracket 5 is the lower edge of the installed face material 41 (lower trunk edge 42 as is apparent from FIGS. 7B and 7C. The face material 41 passes through the lower part of the face material 41 between the protective fence post 36 and the fence post 40 shown in FIG. It can be pressed against the road side surface of the support column 40 and the trunk edge 42, and the work of installation can be facilitated. In other words, unlike the conventional technology, there is no need to cut the straddle straddling the metal fitting at every position of the metal fitting connecting the protective fence post 36 and the fence post 40.
Of course, the face material 41 (metal mesh) is prepared by winding it up in advance like a wrapping paper, with the length (one work division) that can be constructed in the longitudinal direction of the road 1 as one unit, After rotating in the longitudinal direction of the road 1 along the upper and lower trunk edges 42, 42, and unwinding, and expanding into a long strip, the lower part is also inserted between the protective fence post 36 and the fence post 40, By the operation of pressing and stopping the fence post 40 and the upper and lower trunk edges 42, 42 on the road side surface, the work of attaching and setting can be efficiently performed.

  As a process after the pasting of the face material 41 is completed, the auxiliary metal fitting 6 is disposed between the upper part of the side surface of the protective fence post 36 opposite to the road and the corresponding part of the fence post 40 to straddle. The falling fence prevention fence 4 is installed by strongly fastening the guard fence post 36 with U bolts 37 and nuts 38 and the fence post 40 with bolts 7 'and nuts 7a. Is a paragraph.

  Although the present invention has been described based on the illustrated embodiments, the present invention is not limited to the configurations and functions of the embodiments. I would like to remind you that this is a technical idea that includes the scope of application and changes similar to design changes made by those skilled in the art as necessary.

DESCRIPTION OF SYMBOLS 1 Road 2 Concrete railing 3 Guard fence 30, 36 Guard fence support | pillar 4 Falling object prevention fence 40 Fence support | pillar 41 Face material 42 Trunk edge 5 Mounting bracket 50 Bottom 51 Standing part 53 Fence support | pillar mounting part 6 Auxiliary metal fitting 7 Bolt

Claims (5)

Installation method of fallen object prevention fence that attaches fallen object prevention fence using mounting bracket to protective fence installed in the extension direction along the roadside of the road,
The mounting bracket has one side portion joined to the lower portion of the fence post, and continues to the bottom extending around the lower edge of the falling object prevention fence face material installation position and extending toward the guard fence post. A rising portion that rises along a side surface of the protective fence post opposite to the road is formed, and the rising portion is bolted to a side surface of the protective fence post opposite to the road to connect the fence post. And a stage of attaching a trunk edge along the road extending direction above and below the road side surface of the fence post;
Installing a face material along the road side of the fence post and trunk edge;
After that, an auxiliary metal fitting is arranged between a part of the side opposite to the road of the guard fence post above the rising portion of the mounting bracket and a part facing the fence pillar, and the auxiliary metal fitting and the guard fence. An installation method for a fallen object prevention fence, characterized by comprising a step of bolting a support post and a fence support post.   The installation of the face material is performed by winding up the length that can be constructed in the road extension direction like a wrapping paper, and proceeding with the installation work while sequentially rewinding it in the road extension direction. The installation method of the fallen object prevention fence described in claim 1. A method for setting up a fence post for attaching a fence post of a fallen object prevention fence to an upright posture by a mounting bracket on a support fence post installed in an extending direction along the road side of the road,
The mounting bracket has one side portion joined to the lower portion of the fence post, and continues to the bottom extending around the lower edge of the fall object prevention fence face material installation position and extending toward the protective fence post. A rising portion rising along a side opposite to the road of the protective fence post is formed, and the rising column is bolted to a side opposite to the road of the protective fence post to attach the fence post. A method for setting up a fence post, wherein the method goes to a stage of assembling a falling object prevention fence through a stage of setting up. Fence post mounting brackets that stand the fence post of the fallen object prevention fence to the support fence post installed in the extension direction along the road side of the road,
The mounting bracket includes a fence post mounting portion joined to a lower portion of the fence post, and a bottom portion that bypasses a lower edge of the falling material prevention fence face material installation position and extends toward the protection fence post. With
A mounting bracket for a fence post, characterized in that, following the bottom part, a rising part is formed that rises along a side surface opposite to the road of the protective fence post.   5. The fence post according to claim 4, wherein the fence post attachment portion of the mounting bracket and the lower portion of the fence post are integrally joined in advance by welding or bolt joining. Mounting bracket.

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