JP2009138439A - Pile structure and protective fence using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pile structure in which the structure of an underground portion is simplified and which has excellent working efficiency at site. <P>SOLUTION: A column body 4 is vertically installed on a slope 2 with a lock bolt 3. The column body 4 is supported by the upper parts of a pair of support members 5, 5. The lower parts of the support members 5, 5 are brought into contact with the rear both sides of the column body 4, respectively. The lower part of the column body 4 and the lower part of the support member 5 are connected to each other through a longitudinal connection member 6. The lower parts of the pair of support members 5, 5 are connected to each other through a lateral connection member 7. The lower part of the pair of support members 4 and the lower part of the support member 5 are connected to each other through the longitudinal connection member 6 and the lower parts of the pair of support members 5 are connected to each other through the lateral connection member 7 by driving the lock bolt 3 into the slope 2, erecting the column body 4 with the lock bolt 3, and supporting the rear side of the column body 4 by the pair of support members 5, 5 without using a large-sized boring device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pile structure and a protective fence using the same.

  Conventionally, it has been known to prevent avalanches by placing piles on a snowy slope. For example, a drilling hole is formed on a slope, and a steel pipe (for example, Patent Document 1) is built into the drilling hole to prevent an avalanche. A pile is formed.

In addition, a hanging frame type avalanche prevention frame in which an anchor is fixed on a slope and a triangular pyramid frame is connected to the anchor by a wire is also known.
JP 2006-336430 A

  In the avalanche prevention pile described above, large-diameter boring work is required to insert the lower part of the pile, and because a large machine is used on a slope with poor scaffolding, there is a problem that construction is restricted and the construction site is limited .

  In addition, since the avalanche prevention frame uses an anchor, a large-diameter boring operation is not necessary, but since it is only suspended by a wire, the position of the frame body during snowfall moves and the effect is reduced. is there.

  Then, an object of this invention is to provide the pile structure which can simplify the structure of an underground part, and is excellent in the construction property in the field, and a protection fence using the same.

  In the invention of claim 1, the column main body is erected at an installation location by an anchor, the column main body is supported by the upper portions of a pair of support materials, the lower portions of the support materials are grounded to both rear sides of the column main body, The lower part of the column main body and the lower part of the support member are connected by a front and rear connecting member, and the lower parts of the pair of support members are connected by a left and right connecting member.

  Further, in the invention of claim 2, the column main body is hollow, the upper part of the anchor is inserted into the column main body, and the column main body is fixed to the anchor with a filler filled in the column main body. Is.

  According to a third aspect of the present invention, a connecting material is connected to an upper portion of the anchor, and the connecting material is fixed to the column main body.

  Moreover, invention of Claim 4 uses the pile structure of any one of Claims 1-3, established the said pillar main body at intervals, and provided the protective surface between these pillar main bodies. It is.

  According to the configuration of claim 1, without using a large boring device or the like, the anchor is driven into an installation place such as a slope, the column main body is erected by this anchor, and the rear of the column main body is supported by a pair of support materials. The lower part of the pillar body and the lower part of the support member are connected by the front and rear connecting members, and the lower part of the pair of support members is connected by the left and right connecting members.

  Thereby, the pillar main body fixed to the anchor is supported by the pair of support members, so that a pile structure having a predetermined strength against the horizontal force of the slope due to snow is obtained.

  Moreover, according to the structure of Claim 2, a column main body can be fixed to an anchor by filling a hollow column main body with a filler.

  Moreover, according to the structure of Claim 3, a connection material can be connected to the upper part of an anchor, and a pillar main body can be fixed to an anchor using this connection material.

  Moreover, according to the structure of Claim 4, the protection fence which receives an avalanche, a falling rock, etc. on a surface is obtained.

  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 the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, an unprecedented pile structure is obtained by adopting a new pile structure different from the conventional one, and the pile structure and a protective fence using the pile structure will be described.

  Embodiment 1 of the present invention will be described below with reference to FIGS. As shown in the figure, the pile structure 1 is driven with a lock bolt 3 as an anchor on a slope 2 which is a grounding place, and a column main body 4 made of a steel pipe or the like is connected and fixed to the lock bolt 3. Is supported by the upper portions of the pair of left and right support members 5 and 5, the lower portions of the pair of support members 5 and 5 are grounded to the inclined surface 2, and the lower portion of the column body 4 and the lower portions of the support members 5 and 5 are connected to the front and rear. 6 and 6, and the lower portions of the support members 5 and 5 are connected by the left and right connecting members 7.

  Explaining the driving of the lock bolt 3, a drilling hole 11 is drilled on the slope 2 by a leg drill (not shown) which is a manually operated drilling machine, and a reinforcing pipe 12 is provided on the ground G side of the drilling hole 11. The inner surface of the excavation hole 11 is provided. Note that the reinforcement pipe 12 is not provided on the lower side of the excavation hole 11, and the reinforcement pipe 12 is made of a hard material such as a steel pipe. The lock bolt 3 is inserted into the excavation hole 11, the upper portion of the lock bolt 3 is partially protruded from the excavation hole 11, the grout material 13 is filled into the excavation hole 11, and the lock bolt 3 is inserted into the excavation hole 11. To fix. The grout material 13 is exemplified by mortar, cement, and the like, and the grout material 13 is filled up to substantially the upper end of the reinforcing pipe 12.

  In this example, together with the upper part of the lock bolt 3, the upper part of the reinforcing pipe 12 protrudes above the ground G.

  The column main body 4 is provided with a flat base portion 21 at the bottom. The base portion 21 may be fixed to the pillar body 4 or may be a separate body, and is disposed between the ground G and the pillar body 4. An opening 22 that communicates with the inside of the column main body 4 is provided on the center side of the base portion 21, and the column main body 4 is erected so as to cover the upper portion of the reinforcing pipe 12, and thus the column main body 4. With the reinforcing tube 12 inserted in the lower part of the column body, the column body 4 is filled with a fixing grout material 23, and the column body 4 is connected and fixed to the upper end 3 </ b> T of the lock bolt 3.

  The support member 5 has hinge portions 31 and 32 at the upper and lower ends, and the upper ends of the left and right support members 5 and 5 are connected to the upper mountain side of the column main body 4 by the hinge portions 31 and 31. In this example, the hinge portion 31 has a pivot portion 32, the pivot portion 32 has a direction orthogonal to the length direction of the column body 4, and the support member 5 rotates in the vertical direction around the pivot portion 32. It is provided to be movable. The left and right support members 5 and 5 are arranged so as to open rearward in the left and right directions, and the included angle is approximately 60 degrees.

  In addition, a flat plate-shaped grounding portion 34 is connected to the lower end of the support member 5 by the hinge portion 32. In this example, the hinge portion 32 has a pivot portion 35, and the pivot portion 35 is the support member 5. The grounding portion 34 is provided so as to be rotatable around the pivot portion 35.

  The support material 5 is configured to be adjustable in length at the site. As an example, the support material 5 made of a steel pipe or the like is divided into an upper portion 36U and a lower portion 36S in the middle of the length direction, and the divided portions of the upper portion 36U and the lower portion 36S can be slid to the sheath tube portion 37. insert. In addition, it is preferable that one of the upper side portion 36U and the lower side portion 36S is fixed to the sheath tube portion 37 in advance by welding or the like. The sheath tube part 37 is also made of a steel pipe or the like.

  Therefore, the length of the support member 5 can be adjusted by sliding one of the upper side portion 36U and the lower side portion 36S with respect to the sheath tube portion 37.

  The front and rear connecting members 6 and 6 and the left and right connecting members 7 are made of wire rope or the like, but may be steel bars or the like.

  Next, the construction method of the said pile structure is demonstrated.

  The rock bolt 3 is driven into the slope 2, and at this time, the excavation hole 11 can be drilled by a leg drill which is a manually operated drilling machine, and it is not necessary to use a large machine for boring on the slope 2.

  By providing the reinforcement pipe 12 at the upper part of the excavation hole 11, it is possible to counter the shearing force generated when receiving the force in the slope direction.

  After driving the lock bolt 3, the column main body 4 is put on the upper ends of the lock bolt 3 and the reinforcing pipe 12, the fixing grout material 23 is filled, and the column main body 4 is connected and fixed to the upper end 3 </ b> T of the lock bolt 3. The column body 4 is erected in a substantially vertical direction with respect to the slope 2.

  The support member 5 adjusts the angle of the support member 5 with the hinge portion 31 and adjusts the length of the support member 5, and adjusts the angle of the ground contact portion 34 with respect to the support member 5 with the hinge portion 32. Is properly grounded on the inclined surface 2 and a predetermined supporting force is obtained by the support material 5. In addition, after adjusting the length of the support material 5, the support material 5 is filled with a curable filler (not shown) inside, and the filler is cured, so that the support material 5 can be fixed with an adjusted dimension. The support material 5 is set at an angle of approximately 45 degrees with respect to the ground G.

  When the setting of the left and right support members 5 and 5 is completed in this way, the lower portion of the pillar body 4 and the lower portion of the support members 5 and 5 are connected by the front and rear connecting members 6 and 6, and the lower portions of the support members 5 and 5 are connected. Even if a load is applied to the column main body 4 between the left and right connecting members 7, it is possible to prevent the space between the lower portion of the column main body 4 and the lower portions of the support materials 5 and 5 from being opened. It is possible to prevent the lower space from being opened. As described above, the connecting members 6 and 7 resist the tensile force and do not need to resist the compressive force. Therefore, a rope material such as a wire rope can be used.

  As described above, in this embodiment, the main body 4 is erected on the slope 2 as an installation place by the lock bolt 3 as an anchor, and the column main body 4 is supported by the upper portions of the pair of support materials 5 and 5. The lower part of the column body 4 is grounded to both sides of the column body 4, the lower part of the column body 4 and the lower part of the support member 5 are connected by the front and rear connecting members 6, and the lower part of the pair of support members 5 and 5 is connected by the left and right connecting members 7. Since they are connected, a lock bolt 3 is driven into the slope 2 without using a large boring device, and a column main body 4 is erected by the lock bolt 3, and the rear of the column main body 4 is paired with a pair of support members 5, 5. The lower part of the column body 4 and the lower part of the support member 5 are connected by the front and rear connecting members 6, and the lower part of the pair of support members 5 is connected by the left and right connecting members 7.

  As a result, the pillar body 4 fixed to the lock bolt 3 is supported by the pair of support members 5 and 5, whereby the pile structure 1 having a predetermined strength against the horizontal force of the slope 2 due to snow accumulation is obtained.

  Moreover, since this pile structure 1 is installed in the slope 2 at three points of the column main body 4 and the support materials 5 and 5, it will be excellent in stability.

  As described above, in this embodiment, the column main body 4 has a hollow shape, the upper part of the lock bolt 3 as an anchor is inserted into the column main body 4, and a fixing grout material as a filler filled in the column main body 4 is used. Since the column main body 4 is fixed to the lock bolt 3 by 23, the column main body 4 can be fixed to the lock bolt 3 by filling the hollow column main body 4 with the fixing grout material 23.

  Further, as an effect of the embodiment, since the anchor is the lock bolt 3, the lock bolt 3 can be driven in the field by a leg hammer (leg drill) or the like without using a large machine.

  Further, as an effect on the embodiment, since the support material 5 is provided in the column body 4 so that the angle can be changed, the angle of the support materials 5 and 5 can be adjusted according to the state of the site, In contrast, since the angle can be changed, no excessive force is generated between the column main body 4 and the upper portion of the support member 5 even when a snow load is applied.

  Further, as an effect of the embodiment, since the ground contact portion 34 is hinged to the lower portion of the support member 5, the ground contact portion 34 is aligned with the uneven surface of the slope 2 so that a reliable support state can be obtained.

  Further, as an effect of the embodiment, in the construction method of the pile structure 1 described in each claim, the length of the support material 5 is adjusted according to the unevenness of the slope 2 because the length of the support material 5 is adjusted on site. By adjusting the height, the column main body 4 can be supported substantially equally by the support members 5 and 5.

  Further, as an effect on the embodiment, the support material 5 is filled with a filler such as a grout material, thereby suppressing the deformation of the support material 5 against the snow pressure applied from the side surface of the support material 5. Can do.

  FIG. 5 shows a second embodiment of the present invention. The same reference numerals are given to the same parts as those in the above embodiment, and detailed description thereof is omitted. In this example, the front and rear connecting members 6 and 6 are The left and right connecting members 7 are provided with turnbuckles 41 as length adjusting means, so that the connecting members 6 and 7 can be prevented from being bent and the construction is facilitated.

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

  Further, as an effect on the embodiment, in the construction method of the pile structure 1 described in each claim, the support material 5 and / or the front and rear, left and right connecting members 6 and 7 are provided by adjusting the length on the site, so that the slope 2 If the length of the support material 5 is adjusted according to the unevenness of the surface, the column main body 4 can be supported substantially equally by the both support materials 5 and 5, and is matched to the lower position of the support material 5 set at the site. The lengths of the front and rear and left and right connecting members 6 and 7 can be adjusted.

  FIG. 6 shows a third embodiment of the present invention, in which the same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof is omitted. In this example, the pillar body 4 is attached to the anchor. A modification of the connection structure is shown, and as shown in the figure, an upper lock bolt 52 as a connecting material is connected to the upper end 3T of the lock bolt 3 protruding from the base portion 21 by a coupler 51. An upper plate 53 is fixed to the upper portion of the column main body 4, and the upper portion of the lock bolt 52 in the column main body 4 is inserted into the upper plate 53, and a nut 54 as a fixture is tightened on the upper portion of the lock bolt 52. By fixing, the pillar body 4 is connected and fixed to the lock bolt 3. The opening portion 22A of the base portion 21 is sized to allow the lock bolt 3 to be inserted, and a support plate 55 between the base portion 21 and the coupler 51 is provided.

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

  In this way, in this embodiment, the upper lock bolt 52 as the connecting material is connected to the upper portion of the lock bolt 3 as the anchor, and the lock bolt 52 is fixed to the column body 4. The column body 4 can be fixed to the lock bolt 3 using the upper lock bolt 52 by connecting the bolt 52. In this example, the lower portion of the column body 4 has a substantially rigid structure, that is, the column body 4 and the lock bolt. The connection with 3 is a rigid structure.

  Further, as an effect of the embodiment, since the upper lock bolt 52 as the connecting member can be fastened and fixed by the nut 54 as the fixing tool outside the column main body 4, the column main body 4 can be fixed easily.

  7 to 8 show 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 detailed description thereof will be omitted. In this example, each of the above-described embodiments will be described. The same reference numerals are attached to the same parts, and detailed description thereof is omitted. In this example, a modification of the connection structure of the pillar body 4 to the anchor is shown. As shown in FIG. A nut body 61 is fastened and fixed to the upper end of the lock bolt 3 protruding from 21, and a substantially inverted U-shaped latching portion 62 is integrally provided on the nut body 61. A rope member 63 such as a wire rope is disposed in the column main body 4, the rope member 63 is inserted through the hook 62 and folded back, and both ends are inserted from the upper plate 53 to the upper part, and the rope member 63 is inserted. The column main body 4 is connected and fixed to the lock bolt 3 by fixing the both ends of the wire with a wire fastener 64 such as a wire clip and setting the rope member 63 in a tension state. The rope material 63 is a connecting material.

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

  In this way, in this embodiment, the rope material 63 as the connecting material is connected to the upper portion of the lock bolt 3 as the anchor, and the rope material 63 is fixed to the column body 4. The column body 4 can be fixed to the lock bolt 3 using this rope material 63. In this example, the rope material 63 and the latching portion 62 are movable. A hinge structure can be used, that is, the connection between the pillar body 4 and the lock bolt 3 is a hinge structure.

  Further, as an effect of the embodiment, since the rope member 63 as the connecting member can be fastened and fixed by the wire fastener 64 as the fixture outside the pillar body 4, the fixing work of the pillar body 4 can be easily performed. it can.

  FIGS. 9-10 shows Example 5 of this invention, attaches | subjects the same code | symbol to the same part as each said Example, and abbreviate | omits the detailed description, In this example, support material 5 is shown. The modification of the support structure of the column main body 4 by the upper part is shown. A horizontal bar 71 is provided at the upper ends of the pair of support members 5, 5, and the pair of support members 5, 5 are connected to the horizontal bar 71 so as to be rotatable by rotary connection parts 72, 72 as hinge parts, respectively. Has been. The horizontal bar 71 is a support part for supporting the column main body 4, and the column main body 4 is provided with a locking part 73 that locks the horizontal bar 71 from above between the rotating connection parts 72, 72. The locking portion 73 is for positioning the height of the horizontal rod 71 with respect to the column main body 4, and transmits the load applied to the column main body 4 to the horizontal rod 71. Further, left and right positioning means for positioning the horizontal position of the horizontal rod 71 with respect to the column main body 4 are provided. As the horizontal positioning means, the left and right arm portions 74 and 74 protrude from the center of the horizontal rod 71, and these arm portions 74 and 74 are provided. The upper part of the column body 4 is disposed between the two.

  Therefore, if the column main body 4 is erected and the support members 5 and 5 are adjusted and set with the length and angle of the support members 5 and 5 in a state where the locking portion 73 is locked to the horizontal rod 71, the column main body 4 The applied load is applied to the support members 5 and 5 through the locking portions 73 and the horizontal rods 71, so that the column main body 4 can be supported.

  As described above, in this embodiment, the upper portion of the column body 4 is supported by the pair of support members 5 and 5, and the same operations and effects as the above-described embodiments are achieved.

  Further, as an effect of the embodiment, a horizontal bar 71 as a load receiving portion is provided on the upper ends of the support members 5 and 5, and the column main body 4 can be supported without connecting the horizontal bar 71 to the column main body 4. In addition, it is not necessary to connect the pair of support members 5 and 5 to the upper portion of the column main body 4, no stress is generated in the member at the connection location, and the structure can be simplified.

  FIG. 11 shows a sixth embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof is omitted. In this example, the pile structure 1 is inclined 2 Is installed at intervals, and a net 81 as a protective surface is stretched between the column bodies 4, 4 ... of these pile structures 1, 1 ..., and a rockfall and avalanche protection fence using the column body 4 as a column Is forming.

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

  In this way, in this embodiment, the pile structure 1 is used, the column main bodies 4 are erected at intervals, and the net 81 serving as a protective surface is provided between the column main bodies 4, 4,. A protective fence that receives rocks and the like on the surface can be configured.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, an anchor that does not require a boring device may be a self-piercing anchor. The hinge part may be a universal joint.

It is a partially cutaway side view showing Example 1 of the present invention. It is a rear view same as the above. It is a top view of the principal part same as the above. It is sectional drawing of the connection structure of an anchor and a pillar main body same as the above. It is explanatory drawing of the length adjustment means which shows Example 2 of this invention. It is sectional drawing of the principal part which shows Example 3 of this invention. It is sectional drawing of the principal part which shows Example 4 of this invention. It is a side view of the principal part same as the above. It is a rear view of the upper part of the pillar main body which shows Example 5 of this invention. It is a side view of the upper part of a pillar main body same as the above. It is a rear view which shows Example 5 of this invention.

Explanation of symbols

1 Pile structure 2 Slope 3 Rock bolt (anchor)
4 Column body 5 Support material 6 Front / rear connecting material 7 Left / right connecting material
23 Grouting material for fixing
31 Hinge (top)
32 Hinge (bottom)
41 Turnbuckle (length adjustment means)
52 Upper lock bolt (connecting material)
63 Rope material (connecting material)
81 Net (protective surface)

Claims (4)

The column main body is erected at an installation place by an anchor, the column main body is supported by the upper portions of a pair of support materials, the lower portions of the support materials are grounded to both rear sides of the column main body, and the lower portion of the column main body and the support The pile structure characterized by connecting the lower part of a material with the front-and-back connection material, and connecting between the lower parts of said pair of support materials with the left-right connection material. The column main body has a hollow shape, the upper part of the anchor is inserted into the column main body, and the column main body is fixed to the anchor with a filler filled in the column main body. Pile structure. The pile structure according to claim 1, wherein a connecting material is connected to an upper portion of the anchor, and the connecting material is fixed to the column main body. A protection fence comprising the pile structure according to any one of claims 1 to 3, wherein the column main bodies are erected at intervals and a protective surface is provided between the column main bodies.

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