JP2017193857A - Attachment structure of transverse member and guard fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure of a transverse member capable of attaching a transverse member to a support post while adjusting the angle.SOLUTION: The guard fence includes: plural support posts 25, 25 which are disposed on a base at predetermined intervals in a right and left lateral direction; and a transverse member 31 disposed between the support posts 25, 25. Since the guard fence includes: a support post-side receiving member 35 which is formed on the support post 25; a vertical groove 44 having an open upper end, which is disposed in the support post-side receiving member 35; and a web part 36C which is formed on the transverse member 31 and which is loosely inserted into the vertical groove 44 so that the angle can be adjusted, in a state that the web part 36C is loosely inserted in the vertical groove 44, the transverse member 31 can be attached to the support post 25 while adjusting the angle thereof. Also, since a closing member 51 for closing the upper part of the vertical groove 44 is provided, the web part 36C as an insertion and connection part of the transverse member can be prevented from getting out from the vertical groove 44 .SELECTED DRAWING: Figure 5

Description

  The present invention relates to a lateral member mounting structure and a protective fence.

  Conventionally, as this type of terminal struts standing at intervals along locations where rock fall, avalanches, etc. on inclined surfaces should be prevented, and a plurality of terminals struts spaced between the terminal struts Intermediate struts, end struts and cables strung along the mountain side of the intermediate struts, and a plurality of cables stretched vertically and a wire mesh stretched on the cable surface. There is a rock fall protection fence (for example, Patent Document 1) that is embedded and erected.

  In the above-mentioned rockfall protection fence, there is a problem that the work is mainly on-site work, such as assembling the formwork at the site, placing the support, and placing concrete in the formwork, which requires time for construction and increases costs. is there.

  In addition, a clamping part that clamps the column from both side surfaces to temporarily fix it, and supports the clamping part and abuts the upper surface and both side surfaces of the upper part of the retaining wall, and extends over the upper part of the retaining wall. A cavity formed in the retaining wall by using a temporary fixing member composed of a support portion that slides in the vertical direction, and temporarily fixing to the upper portion of the retaining wall prior to standing and fixing the column with the temporary fixing member. There is a protective fence (for example, Patent Document 2) in which a supporting column is erected and fixed by filling a filling material such as concrete or earth and sand generated in the field through a column mounting hole.

  In the above-mentioned guard fence, since precast concrete plate is used as a formwork and filling materials such as earth and sand are packed inside, the field construction is easier than the rock fall protection fence of Patent Document 1, but the field construction is still main. Therefore, there is a problem that construction takes time and costs increase, and furthermore, both guard fences mainly use cast-in-place concrete, so there is a problem that product quality control is difficult compared to factory products.

  On the other hand, a large number of precast concrete blocks having a pillar-shaped building hole and having a pyramid shape of 4 to 20 tons are horizontally connected and arranged on the road on which the unevenness adjustment sheet is laid. There is a temporary falling rock protection fence (for example, Patent Document 2) in which an H-shaped steel is inserted into the H-shaped steel to stand up and a protective material such as a liner plate is locked to the H-shaped steel.

  The temporary rockfall guard fence is excellent for temporary installations that need to be installed urgently.However, because it has a structure in which concrete blocks are placed side by side and connected to each other on the site, it is not suitable for large loads such as avalanches and rockfalls. There is a problem that it is difficult to deal with.

  Further, in Patent Document 2, the support can be rotated around the pin by inserting the pin into a hole (not shown) provided at a predetermined height position of the support, so that the upper portion of the retaining wall is inclined. However, it is described that, regardless of this, the angle can be adjusted so that the support column stands in the vertical direction.

  And it is known that the above-mentioned protective fence is provided with a hard transverse member on the protective surface between adjacent struts, and such a protective fence is arranged along a road along a slope, etc. However, since there is a technique for adjusting the angle of the column as in Patent Document 2, there is a problem that the mounting of the horizontal member to the column becomes complicated.

JP 2011-47154 A JP 2008-255632 A JP 2004-156336 A

  Then, this invention solves the said problem, and it aims at providing the attachment structure of a horizontal member which can attach a horizontal member to a support | pillar by adjusting the angle, and also in workability and quality. The purpose is to provide an excellent protective fence.

  The invention according to claim 1 is a mounting structure of a horizontal member for mounting the horizontal member to the support fence post so that the angle can be adjusted, wherein the angle of the horizontal member can be adjusted up and down.

  The invention of claim 2 is characterized in that the angle of the transverse member can be adjusted in the front-rear direction.

  According to a third aspect of the present invention, a column-side receiving member provided on the column side, a vertical groove portion provided on the column-side receiving member and having an open top, and an angle adjustable to the vertical groove portion provided on the horizontal member. And a transverse member side insertion connecting portion to be loosely inserted.

  According to a fourth aspect of the present invention, there is provided a closing member that closes an upper portion of the vertical groove portion.

  Invention of Claim 5 is equipped with the mounting structure of the horizontal member of any one of the said Claims 1-4, provides the foundation made from concrete in an installation place, and on this foundation, in the left-right length direction In the guard fence in which a plurality of support posts are provided at predetermined intervals and a protection member is provided between the support posts, the foundation is formed by connecting a plurality of precast unit base bodies in the length direction, and the unit base body Is characterized by comprising a flat plate portion, a holding portion integrally provided on the front and rear mountain side of the flat plate portion, and anchor means for fixing the holding portion to the installation location.

  The invention according to claim 6 is characterized in that the support column is erected at the holding portion.

  According to a seventh aspect of the present invention, the holding portion includes a column mounting portion for mounting the column, and an anchor mounting portion that is formed lower than the column mounting portion on the mountain side of the column mounting portion and mounts the anchor means. Features.

  According to the structure of Claim 1, a horizontal member can be attached corresponding to the gradient of an installation place.

  According to the structure of Claim 2, a horizontal member can be attached corresponding to the vertical and horizontal gradient of a setting place, or a plane alignment.

  According to the structure of Claim 3, the angle of a horizontal member can be adjusted and it can attach to a support | pillar in the state which inserted the horizontal member side insertion connection part in the vertical groove part.

  According to the configuration of the fourth aspect, it is possible to prevent the horizontal member side insertion connecting portion from coming out of the vertical groove portion.

  According to the configuration of claim 5, a plurality of unit foundation bodies are connected to each other at the installation location, and fixed by anchor means, thereby obtaining a foundation having a predetermined strength, and standing upright on the foundation. A protective fence can be constructed by providing a protective member between the columns. This protective fence uses a precast unit foundation for the foundation, which reduces on-site construction and provides uniform quality with factory products.

  According to the structure of Claim 6, a support | pillar can be erected stably.

  According to the structure of Claim 7, a support | pillar can be fixed to a high position and a unit foundation part can be fixed to an installation place by an anchor means in the low position of the mountain side.

It is a front view which shows Example 1 of this invention. It is a top view same as the above. FIG. 3 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 3 is an enlarged plan view of adjacent struts and horizontal members. It is an expansion front view of a support | pillar and a horizontal member same as the above. FIG. 6A is a sectional view, FIG. 6B is a side view, and FIG. 6C is a plan view. It is a side view of a closure part same as the above. It is a top explanatory drawing of a support | pillar and a horizontal member same as the above. It is a front explanatory drawing of an adjoining support | pillar and a horizontal member same as the above. It is a top explanatory drawing of a support | pillar and a horizontal member same as the above. It is sectional drawing which shows Example 2 of this invention. It is sectional drawing which shows Example 3 of this invention. It is sectional drawing which shows Example 4 of this invention.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting a new lateral member mounting structure different from the conventional one, an unconventional lateral member mounting structure and a protective fence are obtained, and the lateral member mounting structure and the protective fence will be described.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 11 show Embodiment 1 of the present invention. As shown in the figure, the protective fence 1 is provided with a concrete foundation 6 along the length direction of an installation place 5 that is a boundary between a slope 3 on a mountain 2 side and a road 4. The foundation 6 is formed by connecting and connecting foundation blocks 7, which are unit foundation bodies made of precast concrete, in parallel in the lengthwise direction of the installation place 5.

  The foundation block 7 is integrally provided with a flat plate portion 11 in the length direction of the installation place 5 and a holding portion 12 provided on the mountain 2 side (rear side) of the flat plate portion 11. Further, the flat plate portion 11 has an inclined surface portion 13 on the anti-mountain 2 side (front side), the upper surface portion 14 is flat, and a substantially vertical protective surface portion 15 is provided on the mountain side of the upper surface portion 14, as shown in FIG. In addition, the holding portion 12 is provided perpendicularly to the flat plate portion 11 in the plane at the center in the length direction of the flat plate portion 11. Further, the left and right side surface portions 16, 16 of the holding portion 12 are formed substantially parallel to each other, and the inclined build-up portions 17, 16 are provided at the front sides of the left and right side surface portions 16, 16 and the corner portions of the protective surface portions 15, 15. 17 is provided.

  A root portion 18 is provided at a lower portion of the flat plate portion 11, the root portion 18 has a substantially square cross section, a front surface portion 18 </ b> M which is a surface on the anti-mountain 2 side is vertical, and the front surface portion 18 </ b> M is the inclined surface portion 13. The rear surface portion 18U, which is the surface of the root insertion portion 18 on the mountain 2 side, is vertical and is located behind the protective surface portion 15. That is, the front and rear thickness of the root insertion portion 18 is thicker than the front and rear thickness of the bottom portion of the flat plate portion 11. And the end surfaces 7T and 7T of the length direction of adjacent foundation blocks 7 and 7 are faced | matched, and several foundation blocks 7,7 ... are arranged. Further, the root insertion portion 18 is buried in the ground, and the upper portion of the root insertion portion 18 is aligned with the upper surface of the road 4.

  The holding portion 12 is provided with a column attachment portion 21 on the front side and an anchor attachment portion 22 that is one step lower than the column attachment portion 21 on the rear side. The upper surface portion 21J of the support column mounting portion 21 is flush with the upper surface portion 14, and a substantially vertical rear surface portion 21U is provided between the upper surface portion 21J and the upper surface portion 22J of the anchor mounting portion 22. . Further, the lower surface portion 22K of the anchor attachment portion 22 is formed substantially horizontally, and further, a lower surface portion 21K that increases toward the rear side is provided between the lower surface portion 21K and the upper end of the rear surface portion 21U. The lower surface portion 21 </ b> K is provided at the lower portion of the column attachment portion 21.

  As shown in FIG. 3 and the like, a plurality of insertion holes 24, 24 through which the horizontal steel material 23 is inserted are formed in the flat plate portion 11 side by side. Further, as shown in FIGS. 2 and 3, a mounting hole portion 26 for mounting the column 25 is formed in the column mounting portion 21. Further, the anchor attaching portion 22 has an insertion hole portion 28 through which the anchor means 27 is inserted. The anchor means 27 is exemplified by a fully threaded PC steel bar. Moreover, the lower end of the anchor means 27 is fixed to a natural ground where a sufficient reaction force can be obtained.

  An H-section steel is used for the support column 25. This support column 25 connects the center of the front and rear flange portions 25A, 25A with a web portion 25B in the intersecting direction, and mounting groove portions 25C, 25C are provided vertically on the left and right sides. Further, a protective member is provided between the adjacent support columns 25, 25. The protective member in this example is a horizontal member 31 that is a beam, and the main body 32 of the horizontal member 31 is made of a hard material such as steel. It consists of a square pipe. Further, the lateral member 31 is provided in multiple stages with vertical spacing between the support columns 25.

  The end of the lateral member 31 is attached to the support column 25 by an angle adjustment attachment structure 33. Hereinafter, the configuration of the angle adjustment attachment structure 33 will be described.

  The angle adjustment mounting structure 33 includes a connecting member 34 provided at an end of the lateral member 31 and a column-side receiving member 35 provided on the column 25.

  One flange portion 36A of the H-shaped steel 36 is fixed to the end portion of the lateral member 31 by welding or the like, and a plurality of reinforcing rib portions 37 are provided on the outer surface of the one flange portion 36A and the outer surface of the lateral member 31. Install. The other flange portion 36B of the H-shaped steel and the web portion 36C constitute the connecting member 34, and the web portion 36C constitutes a lateral member side insertion connecting portion, and the web portion 36C is a vertical plate portion. Further, the flange portion 36B is a retaining portion in the length direction of the lateral member 31, and prevents the web portion 36C from slipping out from a longitudinal groove portion 44 described later in the left-right direction.

  The column-side receiving member 35 is integrally provided with a flat plate-like cross member 41 fixed to the groove portion 25C and a vertical member 42 provided at the tip of the cross member 41 protruding outward from the groove portion 25C. Reference numeral 41 denotes an attachment portion attached to the support column 25. Concave portions 43, 43 disposed on the inner surface of the flange portion 25A are provided on both side edges of the cross member 41 in the width direction, and the concave portions 43, 43 on both sides are welded in a state of being fitted in the front and rear flange portions 25A, 25A. It is being fixed to the support | pillar 25 by the above. The outer surfaces of the flange portions 25A and 25A and the side edge on the front end side of the cross member 41 are flush with each other.

  A vertical groove 44 having an upper opening is provided vertically at the center of the vertical member 42 in the front-rear direction, and vertical groove inclined edges 44A and 44A are provided on both sides of the upper portion of the vertical groove 44 so as to increase the distance upward. The web portion 36C is loosely inserted into the longitudinal groove portion 44 from above. And the dimension of the width H of the lower part side of the vertical groove part 44 is larger than the dimension of the thickness T of the said web part 36C. In addition, through holes 45 are formed in front and rear upper portions of the vertical member 42.

  In addition, a plate-like closing member 51 is provided to close the upper portion of the vertical groove portion 44. The closing member 51 corresponds to the vertical groove portion 44 and has a lower vertical groove portion 52 having a lower opening and front and rear through holes 45, 45. Corresponding front and rear notch elongated holes 53, 53 having lower openings are provided. The dimension of the width W1 of the lower vertical groove 52 is larger than the dimension of the thickness T and smaller than the dimension of the width W (W> W1> T). For example, the width W is 30 mm, the width H1 is 20 mm, and the thickness T is about 12 mm. The dimension of the thickness T1 of the vertical member 42 and the closing member 51 is not less than the dimension of the thickness T and not more than the dimension of the width W1. That is, even if the width W is larger than the thickness T, if the thickness T1 is increased, the angle θ that can be adjusted in the left-right direction of the support column 25 is decreased, so that the thickness T1 is set to be equal to or smaller than the width W1. . Further, the interval K between the outer surfaces of the flange portions 36B, 36B at both ends is smaller than the interval KW between the outer surfaces of the web portions 25B, 25B of the adjacent columns 25, 25, and the inner surfaces of the vertical members 42, 42 of the adjacent columns 25, 25. Is larger than the interval KT. Further, when the thickness T1 is 14 mm with the above dimensions, as shown in FIG. 11, the adjustable angle θ in the left-right direction of the support column 25 is 5.736 degrees, and as shown in FIG. The angle θV that assumes the vertical adjustment of the column 25 is 11.422 degrees.

  Further, the distance H between the bottom surface of the horizontal member 41 adjacent to the upper and lower sides and the upper end of the vertical member 42 is larger than the height HW of the web portion 36C. Accordingly, the web portion 36C can be loosely inserted from the front and rear sides of the support column 25 at the interval H, and the web portion 36C can be loosely inserted into the vertical groove portion 44 by lowering the horizontal member 31 therefrom.

  Here, a method of attaching the transverse member 31 to the support column 25 will be described. In the factory, the column-side receiving members 35 are attached to the column 25 in multiple stages, and the connecting members 34 are attached to both ends of the lateral member 31 in the factory. Then, the horizontal member 31 is attached from the lower side, and as described above, the web portion 36C is loosely inserted into the space H from one side of the front and rear sides of the support column 25. The horizontal member 31 is lowered from here to lower the web portions 36C, 36C is loosely inserted into the longitudinal groove portions 44, 44 of the support columns 25, 25 on both sides. In this state, there is a gap due to the dimensional difference between the longitudinal groove portion 44 and the web portion 36C, so that the horizontal direction of the web portion 36C can be adjusted with respect to the longitudinal member 42. Thus, the vertical direction of the web portion 36C can be adjusted.

  As described above, after the horizontal member 31 is arranged according to the slope of the site as necessary, the closing member 51 is overlapped on the outer surface of the vertical member 42 so that the lower vertical groove portion 52 is externally fitted to the upper portion of the web portion 36C. In addition, a bolt 54 as a fixing means is inserted into the notch long hole portion 53 and the through hole 45, and a nut 54 </ b> A is screwed into the bolt 54 to fix the closing member 51 to the vertical member 42. As a result, the end portion of the transverse member 31 can be fixed to the support column 25 without the web portion 36 </ b> C being detached from the longitudinal member 42. Further, since the obturating member 51 is formed with the notched long hole portion 53, the closing member 51 is attached to the longitudinal member 42 even if the angle of the vertical direction of the web portion 36C with respect to the longitudinal member 42 is increased. Can be fixed.

  Next, a construction method will be described. A plurality of foundation blocks 7, 7... Are arranged by abutting the end faces 7T, 7T in the length direction of adjacent foundation blocks 7, 7, and the root portion 18 is buried in the ground. The horizontal steel members 23, 23 are inserted into the insertion hole portions 24, 24, and a plurality of foundation blocks 7, 7,... The anchor attaching portion 22 is fixed to the natural mountain on the mountain 2 side by the anchor means 27, and a predetermined supporting force is obtained. In FIG. 1, the rightmost base block 7 does not have the right side of the flat plate portion 11. Further, the end surface 7T of the foundation block 7 is formed obliquely corresponding to the gradient. In this case, the end face 7T may be formed obliquely at the factory, or the end face 7T may be processed obliquely by cutting or the like at the factory or the site.

  Further, the lower portion of the support column 25 is inserted and disposed in the support column attachment portion 21, and a filler 55 such as a non-shrink mortar is inserted into the support column attachment portion 21 to fix the support column 25. Thereafter, as described above, the transverse members 31 are provided in multiple stages between the adjacent support columns 25 and 25.

  In this protective fence 1, when snow on the slope 3 is applied to the protective surface portion 15 and the rear surface portion 21 U of the foundation 6, it is supported by the entire foundation 6, and the anchor means 27 on the mountain 2 side opposes, thereby providing stable support. Power is obtained.

  As described above, in this embodiment, in accordance with the first aspect of the present invention, the horizontal member 31 is attached to the support 25 of the guard fence 1 so that the angle of the horizontal member 31 can be adjusted. Therefore, the transverse member 31 can be attached corresponding to the gradient of the installation place 5.

  As described above, in this embodiment, the horizontal member 31 can be angle-adjusted back and forth in correspondence with the second aspect. Therefore, the horizontal member 31 is attached corresponding to the longitudinal and transverse gradients and the plane alignment of the installation place 5. be able to.

  Thus, in the present embodiment, corresponding to claim 3, the column-side receiving member 35 provided on the column 25 side, the vertical groove portion 44 provided on the column-side receiving member 35 and having an open top, and the horizontal member 31 is provided with a web portion 36C which is a lateral member side insertion connecting portion which is loosely inserted into the longitudinal groove portion 44 so as to be adjustable in angle, and the angle of the transverse member 31 is adjusted in a state where the web portion 36C is loosely inserted into the longitudinal groove portion 44. It can be adjusted and attached to the column 25.

  Thus, in the present embodiment, corresponding to the fourth aspect, since the closing member 51 that closes the upper portion of the longitudinal groove portion 44 is provided, the web portion 36C that is the lateral member side insertion connecting portion from the longitudinal groove portion 44 can be prevented from coming off. .

  Thus, in this embodiment, in accordance with claim 5, a concrete base 6 is provided at the installation location 5, and a plurality of support posts 25 are provided on the foundation 6 at predetermined intervals in the left-right length direction. 25, and in the guard fence 1 provided with the transverse member 31 as a guard member between the support columns 25, 25, the foundation 6 is formed by connecting a plurality of precast base blocks 7 which are unit base bodies in the length direction, The foundation block 7 includes a flat plate portion 11, a holding portion 12 integrally provided on the front-rear direction mountain side of the flat plate portion 11, and anchor means 27 for fixing the holding portion 12 to the installation place 5. The base 7 having a predetermined strength is obtained by connecting the blocks 7 to the installation place 5 side by side and fixing them with the anchor means 27, and the support 25 is erected on the foundation 6 and between the support 25, 25. The transverse member 31 Kick it is possible to build a protective fence 1 by. In this protective fence 1, by using a foundation block 7 made of a precast foundation, it is possible to reduce on-site construction and to obtain uniform quality by factory products.

  As described above, in this embodiment, since the support column 25 is erected at the place of the holding portion 12 in correspondence with the sixth aspect, the support column 25 can be stably erected.

  Thus, in this embodiment, corresponding to claim 7, the holding portion 12 is formed lower than the column mounting portion 21 on the mountain side of the column mounting portion 21 and the column mounting portion 21 to which the column 25 is mounted. Since the anchor attachment portion 22 for attaching the means 27 is provided, the support column 25 can be fixed at a high position, and the foundation block 7 can be fixed to the installation place 5 by the anchor means 27 at a low position on the mountain 2 side.

  As described above, in this embodiment, the protective member is the horizontal member 31, the horizontal member 31 is provided in multiple stages between the adjacent columns 25, 25, and the angle adjustment mounting structure for mounting the horizontal member 31 to the column 25 so that the angle can be adjusted. Therefore, the cross member 31 can be attached in accordance with the gradient of the installation place 5.

  Hereinafter, as an effect of the embodiment, the angle adjustment mounting structure 33 is not rigidly connected but is pin-coupled, so that an excessive force is not applied to the mounting location. In addition, since the anchor means 27 is disposed on the mountain 2 side away from the support column 25 and the rear surface portion 21U, the anchor means 27 can effectively support a snow load and a falling rock load. Further, since the interval H between the bottom surface of the horizontal member 41 adjacent to the upper and lower sides and the upper end of the vertical member 42 is larger than the height HW of the web portion 36C, the web portion is located at the interval H from the front and rear sides of the support column 25. 36C can be loosely inserted, and the web member 36C can be loosely inserted into the vertical groove portion 44 by lowering the horizontal member 31 therefrom. Further, the closing member 51 includes a lower longitudinal groove portion 52 corresponding to the longitudinal groove portion 44 and having a lower opening, and front and rear cutout long hole portions 53 and 53 corresponding to front and rear through holes 45 and 45 having lower portions opened. Further, the web portion 36C can be connected by the lower longitudinal groove portion 52 without being detached from the longitudinal groove portion 44. Further, even when the transverse member 31 has a gradient in the longitudinal direction, the blocking member 51 is made to be a longitudinal member by the notched elongated hole portions 53, 53. 42 can be fixed.

  FIG. 11 shows a second embodiment of the present invention. The same reference numerals are given to the same portions as those in the first embodiment, and the description thereof will be omitted. In this example, the slope 3 has an inclination angle of 60 degrees. The front and rear direction of the anchor mounting portion 22 of the holding portion 12 is shorter than that of the first embodiment. In Example 1, the type in which the slope 3 has an inclination angle of 50 degrees is shown.

  As described above, in this embodiment, the same operations and effects as those of the first embodiment are obtained.

  In addition, when the inclination angle of the slope 3 increases as described above, it is possible to cope with the change in the longitudinal direction of the anchor attachment portion 22 without changing the others.

  FIG. 12 shows a third embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and the description thereof will be omitted. In this example, the slope 3 has an inclination angle of 40 degrees. The front and rear direction of the anchor mounting portion 22 of the holding portion 12 is longer than that of the first embodiment.

  As described above, in this embodiment, the same operations and effects as the above-described embodiments are obtained.

  As described above, when the inclination angle of the inclined surface 3 is reduced, the longitudinal direction of the anchor attachment portion 22 is changed. Specifically, when the inclination angle is decreased, the longitudinal dimension of the anchor attachment portion 22 is reversed. If the angle of inclination is increased, the front and rear dimensions of the anchor mounting portion 22 are formed to be shorter and the others can be handled without change.

  FIG. 13 shows a fourth embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and the description thereof will be omitted. It is the protective fence 1 provided in the field where the design snow depth is deeper than those of Examples 1 to 3.

  Compared with the first to third embodiments, the height of the support column 25 and the height of the protection surface portion 15 are increased, and the number of steps of the transverse member 31 is also increased.

  As described above, in this embodiment, the same operations and effects as those of the first embodiment are obtained.

  Also in this example, when the inclination angle of the slope 3 becomes small as in the above embodiment, the longitudinal direction of the anchor attachment portion 22 is changed. Specifically, when the inclination angle decreases, the anchor attachment portion If the front and rear dimensions of 22 are formed to be long and the angle of inclination is increased, the front and rear dimensions of the anchor mounting portion 22 are formed to be short and the others can be handled without change.

  The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, in the embodiment, a T-shaped connecting member is used, but an L-shaped connecting member may be used, and the shape of the retaining portion can be appropriately selected. Further, a plurality of holding portions may be provided on the unit base body, and anchor means may be provided on each holding portion. Furthermore, you may attach a support | pillar from the upper stage side. Moreover, although it becomes easy to attach a connection member by making a support | pillar into H-section steel, it is not limited to this, You may make a support | pillar into a circular steel pipe, a square steel pipe, etc. Further, it is not always necessary to provide the root portion.

1 Guard fence 2 Mountain 3 Slope 5 Installation place 6 Foundation 7 Foundation block (Unit foundation)
DESCRIPTION OF SYMBOLS 11 Flat part 12 Retaining part 21 Support | pillar attaching part 22 Anchor attaching part 27 Anchor means 31 Lateral member (protective member)
33 Angle adjustment mounting structure 34 Connecting member 35 Column side receiving member 36C Web portion (transverse member side insertion connecting portion)
44 Longitudinal groove 51 Closure member

Claims (7)

A horizontal member mounting structure for mounting a horizontal member on a support fence post so that the angle of the horizontal member can be adjusted, wherein the horizontal member is vertically adjustable. The horizontal member mounting structure according to claim 1, wherein the horizontal member is adjustable in angle in the front-rear direction. A column-side receiving member provided on the column side, a vertical groove portion provided in the column-side receiving member and having an open top, and a horizontal member side insertion provided in the horizontal member and loosely inserted into the vertical groove portion so as to be adjustable in angle. The lateral member mounting structure according to claim 2, further comprising a connecting portion. The transverse member mounting structure according to claim 3, further comprising a closing member that closes an upper portion of the vertical groove portion. The mounting structure of the transverse member according to any one of claims 1 to 4,
A concrete base is provided at the installation location, and on this foundation, a plurality of support posts are provided at predetermined intervals in the left-right length direction, and the transverse member is provided between the support posts,
The foundation is formed by connecting a plurality of precast unit foundation bodies in the length direction. The unit foundation body includes a flat plate portion, a holding portion integrally provided on the front and rear mountain side of the flat plate portion, and the holding portion. And an anchor means for fixing the part to the installation location. The protective fence according to claim 5, wherein the support column is erected at the holding portion. The said holding | maintenance part is provided with the support | pillar attachment part which attaches the said support | pillar, and the anchor attachment part which is formed lower than this support | pillar attachment part on the mountain side of this support | pillar attachment part, and attaches the said anchor means. 6. Guard fence according to 6.

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