JP4924992B2 - Protective fence, its buffer structure unit and improved method using the same - Google Patents

Description

  The present invention relates to a protective fence for avalanches, falling rocks, etc., its buffer structure unit, and an improved method using the same.

  Conventionally, as this kind of protective fence, terminal pipe struts built on the ground at intervals and intermediate pipe struts with wire mesh stretched together with multiple stages of cables, and H-shaped steel terminals built at appropriate intervals 2. Description of the Related Art A protective fence (for example, Patent Document 1) including a column and an intermediate column, and a plurality of cables and wire nets stretched between the columns is known.

  In addition, a rope shock absorber (for example, Patent Document 2) that holds a horizontal rope material provided between struts and absorbs the tension applied to the horizontal rope material by frictional sliding of the horizontal rope material has been proposed. Has a U-bolt, and a connecting portion for connecting the U-bolt is provided on the support column.

On the other hand, there is an interval holding device (for example, Patent Document 3) in which an interval holding member is used to hold an interval between horizontal rope members provided in multiple stages and the interval holding members that fix the horizontal rope member are frictionally connected to each other.
JP-A-7-197423 JP 2003-313828 A JP 2002-356815 A

  Although the protection fence provided with the shock absorber as in Patent Document 2 has an excellent energy absorption effect such as falling rocks due to the buffer action, the protection fence is used because the shock absorber provided with the U bolt and the gripping tool is used. There are aspects that make the structure complicated.

  Moreover, in the guard fence of the said patent document 1, even if a metal mesh etc. are damaged and repair work is performed, an energy absorption effect cannot be improved only by maintaining the present condition. Therefore, it is conceivable to install a shock absorber during repair work, but since it is not possible to directly connect the shock absorber to a support such as H steel, it is necessary to attach a connecting part to the support or to process the support, It cannot be easily modified during repair work.

  On the other hand, in the above-described spacing device, when a force of a certain value or more acts on the spacing material, the spacing materials slide against each other to open the space between the horizontal rope materials, and can exhibit an energy absorption effect. Compared with a shock absorber that grips the horizontal rope material, the energy absorption effect is poor.

  By the way, all of the prior arts assemble the buffer structure at the site, but if it can be assembled at the factory, workability and reliability can be improved, and workability in newly installed and existing protective fences can be improved. Improvements can be made.

  Therefore, the present invention aims to provide a protective fence capable of improving the energy absorption effect, and in the newly installed and existing protective fences, the buffer structure is excellent in reliability and the workability on site is improved. It aims at providing the buffer structure unit which can be performed, and aims at providing the improvement method of the protection fence which can improve an energy absorption effect in the existing protection fence.

According to the first aspect of the present invention, in a protective fence in which a plurality of support columns are provided at predetermined intervals, and a horizontal rope member is provided in multiple stages between the support columns, a shock absorber mounting material is arranged in an unfixed state between the support columns. The shock absorber mounting material is provided with a shock absorber for gripping the horizontal rope material, the lower portion of the shock absorber mounting material is formed in a convex shape, and the lower portion of the shock absorber mounting material is grounded .

The invention according to claim 2 is a protective fence in which a plurality of support posts are provided at predetermined intervals, and a horizontal rope member is provided in multiple stages between the support posts. The shock absorber mounting material is provided with a shock absorber for gripping the horizontal rope member, and the shock absorber and the shock absorber mounting material are fixed to the shock absorber mounting material by bolts inserted through the shock absorber mounting material. An arc-shaped long hole through which the bolt is inserted is formed in the material.

According to a third aspect of the present invention, in a protective fence in which a plurality of support columns are provided at predetermined intervals and a horizontal rope member is provided in multiple stages between the support columns, a shock absorber mounting material is disposed between the support columns in an unfixed state. The shock absorber mounting material is provided with a shock absorber for gripping the horizontal rope material, the shock absorber is provided on the anti-mountain side of the shock absorber mounting material, and the arc-shaped portion is formed on the left and right edges of the anti-mountain mounting material. Is provided .

Moreover, invention of Claim 4 hold | grips the said horizontal rope material arrange | positioned on the both sides of the said shock absorber attachment material with the said shock absorber.

According to a fifth aspect of the present invention, the shock absorber and the shock absorber mounting member are fixed to the shock absorber attachment member by a bolt inserted into the shock absorber attachment member.

  In the invention of claim 6, the shock absorber is provided on the opposite side of the shock absorber mounting material.

According to a seventh aspect of the present invention, there is provided a stopper that engages with the shock absorber at an end of the horizontal rope member.

Further, the invention of claim 8 is a shock absorber structure unit used for a protective fence in which a plurality of support posts are provided at a predetermined interval and a horizontal rope member is provided in multiple stages between the support posts. The shock absorber mounting material is provided with shock absorbers provided in multiple stages, and the shock absorber rope material held by the shock absorber and connected to the lateral rope material.

Further, the invention of claim 9 is a method of improving an existing protective fence in which a plurality of support posts are provided at predetermined intervals, and horizontal rope members are provided in multiple stages between the support posts. In addition, a shock absorber unit provided in multiple stages on the shock absorber attachment material and a shock absorber structure provided with the shock absorber rope material gripped by the shock absorber, and connecting the shock absorber rope material to the horizontal rope material between the struts It is the improvement method which provides the said shock absorber attachment material.

According to a tenth aspect of the present invention, the buffer rope material has a connecting portion at an end thereof, cuts the horizontal rope material, and winds the cut end and the connecting portion around the cut end . It is an improved method of connecting by lip.

According to the structure of Claim 1 , 2 , and 3 , not only the horizontal rope material of the part to which impact force, such as falling rock, was added, but the upper and lower sides of the shock absorber attachment material by providing the horizontal rope material in multiple stages with the shock absorber. The impact force can be absorbed by a plurality of horizontal rope members and shock absorbers.

Moreover, according to the structure of Claim 4 , the horizontal rope material located in the both sides of a shock absorber attachment material can be each hold | gripped with a shock absorber, and can be attached to a shock absorber attachment material.

Moreover, according to the structure of Claim 1 , even when there exists a longitudinal gradient in an installation place, since the lower part of a shock absorber attachment material is formed in convex shape, a shock absorber attachment material can be arrange | positioned substantially perpendicularly. .

Moreover, according to the structure of Claim 2 , 5 , a shock absorber can be simply attached to a shock absorber attachment material using a volt | bolt.

Moreover, according to the structure of Claim 2 , even if there is a longitudinal gradient in the installation location and the horizontal rope material is arranged obliquely, the bolt position with respect to the long hole is adjusted so that the direction of the shock absorber matches the horizontal rope material. Can do.

Moreover, according to the structure of Claim 3, 6, a falling rock does not collide directly with a buffer.

Further, according to the configuration of claim 3 , when the shock absorber mounting material moves to the anti-mountain side due to an impact force such as falling rocks, the lateral rope material hits the arc-shaped portion. It can prevent that a horizontal rope material hits and a horizontal rope material is damaged.

Moreover, according to the structure of Claim 7 , after a horizontal rope material carries out friction sliding, a stopper latches to a buffer and sliding stops.

Moreover, according to the structure of Claim 8 , a highly reliable product is obtained by assembling the shock absorber mounting material, the shock absorber, and the shocking rope material into a unit. The workability on site can be improved.

Moreover, according to the structure of Claim 9 , the existing protective fence can be improved and an energy absorption effect can be improved.

Moreover, according to the structure of Claim 10 , an improvement work can be easily performed by cut | disconnecting the existing horizontal rope material on the spot, and connecting the cut end and the connection part of a unit.

  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 protection fence and buffer structure unit different from the conventional one, an unprecedented protection fence and buffer structure unit and its improved construction method are obtained, and the protection fence will be described.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show a first embodiment of the present invention. As shown in FIG. 1, a rock fall protection fence 100 that is an impact absorbing fence is provided with a concrete foundation 1 that is a foundation alongside a slope or a slope. A plurality of support columns 2 are erected on 1. The column 2 is made of H-shaped steel, concrete column, steel pipe, concrete-filled steel pipe, or the like. In this example, H-shaped steel is used and its lower end is fixed to the concrete foundation 1. Between the struts 2, horizontal rope members 3 and 3 are provided on the upper and lower stages. Further, the space between the supports 2 and 2 is shielded by the metal mesh 5. In addition, the support | pillar 2 may be fixed to a foundation as mentioned above, a lower part may be built and fixed in the ground, a lower part may be fixed to a slope etc. It may be fixed by a material.

A buffer structure unit 11 shown in FIG. 3 is provided between the columns 2 and 2. The buffer structure unit 11 includes a shock absorber mounting member 12 made of a U-shaped steel, a shock absorber 13 attached to the shock absorber mounting member 12 corresponding to the horizontal rope member 3, and a grip by the shock absorber 13. and a pair of slow 衝Ro-loop material 14, 14 that are. Also, as shown in FIG. 4, at the lower part of the shock absorber mounting member 12, inclined portions 12A that are slightly higher from the center toward the both sides are formed on the left and right sides, and the center portion 12B protrudes downward and becomes lower. It is formed in a convex shape. In addition, it is good also considering the lower part of the shock absorber attachment material 12 as an arc-shaped convex shape.

  And the lower part of the said buffer attachment material 12 is a free end, Comprising: It mounts in the non-fixed state on the upper surface 1A of the foundation 1, and is provided so that a movement is possible.

  The shock absorber mounting member 12 has a substantially U-shaped cross section integrally including front and rear front and rear pieces 16 and 16 on both sides of a flat plate portion 15 having a flat outer surface. Round bars 17 and 17 constituting the arcuate portion are fixed by welding or the like.

As shown in FIGS. 6 and 7, the shock absorber 13 includes a pair of grip bodies 21 and 21 that grip the horizontal rope material 3 with a predetermined frictional force. , to form a pair of fitting grooves 22, 22 to be fitted to the horizontal rope material 3, both grippers 21 and 21, more fastened to the fixed hand stepped fastening with a bolt 23 and a nut 24, and the buffer It is fixed to the tool mounting material 12 in multiple stages in the vertical direction.

  The grip body 21 is formed in a substantially rectangular block shape that is long in the height direction of the support column 2, and the fitting grooves 22, 22 that form the lateral direction are arranged vertically when in use. In use, insertion holes 23A and 23A through which the bolts 23 are inserted are formed above and below the grip bodies 21 and 21 with the fitting grooves 22 and 22 interposed therebetween. As shown in FIG. 5, corresponding to these insertion holes 23A and 23A, arc-shaped long holes 23B and 23B are formed vertically in the flat plate portion 15 of the shock absorber mounting member 12, and these long holes 23B are formed. , 23B are located on the virtual circle K so as to face each other.

In this example, the bolt 23 is inserted from the inner surface of the shock absorber mounting member 12 into the long hole 23B and the insertion hole 23A, and the nut 24 is screwed to the tip. A washer 25 is disposed between the head of the bolt 23 and the shock absorber mounting member 12, and a washer 25 is disposed between the nut 24 and the gripping body 21.

As shown in FIG. 2, the slow 衝Ro-loop material 14 that forms a part of the horizontal rope materials, limbal 31,31A is kicked Bei at both ends, the proximal end of the annulus 31,31A is An iron clamp 32 as a stopper is fixed by caulking. In addition, a metal reinforcing member 33 is provided on the inner periphery of one of the ring portions 31. Then, the slow 衝Ro-loop material 14, 14 disposed above and below the one bumper 13, the limbus 31, 31 provided with the reinforcing member 33 of the upper and lower slow 衝Ro-loop material 14 and 14, right and left different Placed in position. In addition, you may provide the reinforcement member 33 in both the ring parts 31 and 31A.

  Further, a spacing member 36 is provided on the support columns 2 and 2, and the horizontal rope material 3 provided in multiple stages is fixed to the spacing member 36 by fixing means 37 such as a U-bolt. The horizontal rope member 3 is fixed to the support column 2 by the fixing means 37.

Next, the example which uses the said buffer structure unit 11 for the improvement of the existing guard fence 100 is demonstrated. The horizontal rope member 3 of the existing protective fence 100 is cut at a position where the shock absorber attachment member 12 is disposed. Incidentally, slow 衝Ro-loop material 14, used as hardness is lower than the horizontal rope materials 3 existing. The cut end 3 </ b> T of the horizontal rope member 3 and the one ring portion 31 are connected by a winding grip 34. The winding handle 34, as shown in FIG. 8, the loop portion 34A is formed in the middle portion of the comprising a plurality wires wires, the leg portion 34B of the both connecting to the loop portion 3 4A, at a predetermined pitch to 34B In use, the loop portion 34A is inserted into the ring portion 31, and the leg portions 34B and 34B are sequentially wound along the twist of the end portion 3T.

Then, after connecting the loose 衝Ro-loop material 14 on the end portion 3T of the horizontal rope materials 3, by pulling the other annulus 31A, to tension the horizontal rope materials 3 which is connected to slow 衝Ro-loop material 14 can be a slow 衝Ro-loop material 14 grips tighten the bolts 23 in this state. Further, the lower part of the shock absorber mounting member 12 is grounded to the concrete foundation 1. Thereby, the weight of the shock absorber attachment material 12 is not added to the plurality of horizontal rope members 3.

  Further, when the existing horizontal rope member 3 is provided obliquely, the bolt 23 inserted through the long hole 23B is loosened, and the direction of the shock absorber 13 is set to the horizontal rope with respect to the shock absorber attachment member 12 in the vertical direction. After adjusting according to the material 3, the nut 24 is tightened and fixed. Moreover, since the lower part of the shock absorber attachment material 12 is formed in a convex shape with the center side protruding downward, the shock absorber attachment arranged in the vertical direction even if the upper surface 1A of the concrete foundation 1 is inclined. The material 12 can be stably grounded.

  As described above, in this embodiment, in the protective fence in which the plurality of support columns 2 and 2 are provided at predetermined intervals and the horizontal rope material 3 is provided in multiple stages between the support columns 2 and 2, the shock absorber mounting material is provided between the support columns 2 and 2. 12 is arranged in a non-fixed state, and the shock absorber mounting material 12 is provided with the shock absorber 13 for gripping the horizontal rope material 3, so that not only the portion of the horizontal rope material 3 to which impact force such as falling rocks is applied but also the upper and lower The impact force can be absorbed by the plurality of horizontal rope members 3 and the buffer 13.

  In this way, in this embodiment, since the horizontal rope material 3 disposed on both sides of the shock absorber mounting material 12 is gripped by the shock absorber 13, the horizontal rope material 3 positioned on both sides of the shock absorber mounting material 12 is buffered. It can be gripped by the tool 13 and attached to the shock absorber mounting material 12.

  Further, in this embodiment, since the lower portion of the shock absorber mounting material 12 is formed in a convex shape and the lower portion of the shock absorber mounting material 12 is grounded, even when the horizontal rope material 3 is disposed obliquely, Since the lower part of the shock absorber attachment material 12 is formed in a convex shape, the shock absorber attachment material 12 can be arranged substantially vertically.

  Further, in this embodiment, since the shock absorber 13 is fixed to the shock absorber mounting member 12 by the bolt 23 inserted through the shock absorber 13 and the shock absorber attachment member 12, the shock absorber 13 is fixed to the shock absorber 13 using the bolt 23. It can be easily attached to the attachment material 12.

  Moreover, in this embodiment, since the arcuate elongated hole 23B through which the bolt 23 is inserted is formed in the shock absorber mounting member 12, even when the horizontal rope member 3 is disposed obliquely, the arcuate length The direction of the shock absorber 13 can be adjusted to the horizontal rope member 3 by adjusting the bolt position with respect to the hole 23B.

Further, in this embodiment, since the shock absorber 13 is provided on the opposite side of the shock absorber mounting member 12, the falling rock does not directly collide with the shock absorber 13 .

  Further, in this embodiment, since the round bars 17 that are arc-shaped portions are provided on the left and right edges of the shock absorber mounting material 12 on the side opposite to the mountain, the shock absorber mounting material 12 receives the impact force of falling rocks and the like. When moving to the mountain side, since the horizontal rope material 3 hits the round bar 17, it is possible to prevent the horizontal rope material 3 from being damaged by hitting the horizontal rope material 3 against the corners of the shock absorber mounting material 12 or the like.

Further, in the present embodiment thus, because provided a stopper serving iron clamp 32 for engaging the ends of the horizontal rope materials 3 to bumper 13, after the horizontal rope materials 3 is frictionally slid, iron bumper 13 The clamp 32 is locked and the sliding stops.

  Moreover, as an effect on the embodiment, the iron clamp 32 forming the ring portion 31A can also be used as a stopper, and there is no need to provide a separate stopper.

  In this way, in the present embodiment, in the buffer structure unit used for the protective fence in which the plurality of supports 2 and 2 are provided at predetermined intervals and the horizontal rope material 3 is provided in multiple stages between the supports 2 and 2, Since the shock absorber attachment material 12 provided between the two, the shock absorber attachment material 12 provided in multiple stages, the shock absorber 13, and the shock absorber rope 14 held by the shock absorber 13 and connected to the lateral rope material 3, By assembling the shock absorber mounting material 12, the shock absorber 13 and the shock rope material 14 into a unit, a highly reliable product can be obtained, and the workability on site can be improved regardless of whether it is newly installed or existing. be able to.

  As described above, in this embodiment, in the method of improving the existing protective fence 100 in which the plurality of support columns 2 and 2 are provided at predetermined intervals and the horizontal rope members 3 are provided in multiple stages between the support columns 2 and 2, The shock absorber mounting member 12 provided between the shock absorber mounting member 12, the shock absorber 13 provided in multiple stages on the shock absorber mounting member 12, and the shock absorber structure unit 11 that is held by the shock absorber 13 and includes the shock absorber rope member 14. Since the shock absorber rope member 14 is connected to the rope member 3 and the shock absorber attachment member 12 is provided between the support columns 2 and 2, the existing protective fence 100 can be improved to improve the energy absorption effect.

As described above, in this embodiment, the buffer rope member 14 has the ring portion 31 that is a connecting portion at the end thereof, cuts the horizontal rope member 3, and cuts the cut end 3T and the ring portion 31 into the cut ends. since connected by winding grip 34 wrapped 3T, situ cutting the horizontal rope materials 3 of the existing, by connecting the ring portion 31 of the cut end 3T and unit 11, easily performed by the improved work Can do.

Further, as an effect of the embodiment, since the buffer rope material 14 is provided with the ring portion 31A at the other end portion, the horizontal rope material 3 is stretched by pulling the ring portion 31A after being connected to the horizontal rope material 3. Can be set. Further, slow 衝Ro-loop material 14, because I used has low hardness than the horizontal rope material 3 existing, it is possible to obtain a high frictional force by gripping the bumper 13.

9 and 10 show a second embodiment of the present invention, the same reference numerals in the first embodiment and the same parts, the detail is omitted the detailed description, in this example, slow 衝Ro-loop material 14A has, adjacent has a length of between bumper mounting member 12, 12, and gripping the loose 衝Ro-loop material 14A on the bumper 13 of the adjacent bumper mounting member 12, 12, the ring portion 31A, 31A are provided at both ends of the slow 衝Ro-loop material 14A.

Further, the bumper 13 of the tower 2 side of the terminal, gripping the the slow 衝Ro-loop material 14A and the slow 衝Ro-loop material 14, and the ring portion 31 of the slow 衝Ro-loop material 14 terminal The end of the horizontal rope member 3 </ b > A of the column 2 is connected by the winding grip 34.

Also, if attached to the existing tower 2, release the securing means 37 of the existing tower 2, to remove the horizontal rope materials 3 of the existing, by the slow 衝Ro-loop material 14A of the fixing means 37 existing posts 2 Secure to.

Thus, also in the present embodiment, the same operations and effects as those of the first embodiment are achieved in correspondence with claims 1 to 7 .

In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, in the embodiment, the shock absorber is provided on the rear side (anti-mountain side) of the support column. However, the shock absorber may be provided on the front side (crest side) of the support column except for the third and sixth aspects. Various types of shock absorbers may be used as long as the rope material is frictionally slid when the rope material is gripped with a predetermined gripping force and is subjected to a tension higher than a predetermined value.

It is a rear view of the guard fence which shows Example 1 of this invention. It is a top view of a buffer structure unit same as the above. It is a side view of a protection fence same as the above. It is a rear view of a buffer attachment material same as the above. It is an enlarged rear view of the principal part of a shock absorber attachment material same as the above. It is an exploded top view of a shock absorber same as the above. It is a front view of the holding body of a buffer tool same as the above. It is a front view of a winding grip same as the above. It is a rear view of the protection fence which shows Example 2 of this invention. It is a top view of the principal part of a protection fence same as the above.

100 fences 1 concrete foundation 1A top 2 column 3 horizontal rope materials 3T cutting edge 11 the buffer structure unit 12 bumper mounting member 13 bumper 14 loosely 衝Ro-loop material 17 round bar (circular arc portion)
21 Grasping body 22 Fitting groove 23 Bolt 23B Long hole 31 Ring part 31A Ring part 32 Iron clamp (stopper)
34 Winding grip

Claims (10)

In a protective fence in which a plurality of support posts are provided at predetermined intervals, and a horizontal rope member is provided in multiple stages between the support posts, a shock absorber attachment material is arranged in an unfixed state between the support posts. A protective fence provided with a shock absorber for gripping a rope member , wherein a lower portion of the shock absorber attachment material is formed in a convex shape, and a lower portion of the shock absorber attachment material is grounded . In a protective fence in which a plurality of support posts are provided at predetermined intervals, and a horizontal rope member is provided in multiple stages between the support posts, a shock absorber attachment material is arranged in an unfixed state between the support posts. A shock absorber for gripping the rope material is provided , and the shock absorber and the shock absorber mounting material are fixed to the shock absorber mounting material by a bolt inserted into the shock absorber and the shock absorber mounting material, and the bolt is inserted into the shock absorber mounting material. Guard fence characterized by drilling arc-shaped long holes . In a protective fence in which a plurality of support posts are provided at predetermined intervals, and a horizontal rope member is provided in multiple stages between the support posts, a shock absorber attachment material is arranged in an unfixed state between the support posts. A shock absorber that grips the rope material, the shock absorber is provided on the opposite side of the shock absorber mounting material, and arc-shaped portions are provided on the left and right edge portions on the opposite side of the shock absorber mounting material. fence. The guard fence according to any one of claims 1 to 3, wherein the lateral rope member disposed on both sides of the shock absorber attachment member is gripped by the shock absorber. 4. The protective fence according to claim 1 or 3 , wherein the shock absorber is fixed to the shock absorber mounting member by a bolt inserted through the shock absorber and the shock absorber attachment member. The protective fence according to claim 1 or 2 , wherein the shock absorber is provided on the opposite side of the shock absorber mounting material. The protective fence according to any one of claims 1 to 6 , wherein a stopper that locks the shock absorber is provided at an end of the horizontal rope member. In the shock-absorbing structure unit used for the protective fence in which a plurality of support posts are provided at predetermined intervals, and a horizontal rope member is provided in multiple stages between the support columns, the shock absorber attachment material provided between the support columns, and the shock absorber attachment material in multiple stages a bumper that is provided, the buffer structure unit, characterized in that it comprises a buffer rope member for connecting the gripped the horizontal rope materials to the bumper. In a method for improving an existing protective fence in which a plurality of support posts are provided at predetermined intervals, and horizontal rope members are provided in multiple stages between the support posts,
Using a shock absorber mounting member provided between the struts, a shock absorber provided in multiple stages on the shock absorber attachment, and a shock absorber member gripped by the shock absorber,
A method for improving a protective fence, comprising: connecting the buffer rope material to the horizontal rope material and providing the buffer attachment material between the columns. The buffer rope material, has a connecting portion at an end thereof, cutting the horizontal rope materials, characterized by connecting the winding grip winding and the connecting portion and the cut end to the cut end The method for improving a protective fence according to claim 9 .

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