JP2009024479A - Strut of snowslide/rock fall protective body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a strut of a snowslide/rock fall protective body enabling the easy transportation and carrying-in of struts, providing landslide suppressing effect, and manufacturable economically. <P>SOLUTION: In this strut 2. a strut lower part 2S fixed to a slope Y for use as a landslide suppressing pile to a strut upper part 2U connected to the upper part of the strut lower part 2S. The strut lower part 2S is thinner than the strut upper part 2U. Since the strut lower part 2S is fixed to the slope Y, the landslide suppressing effect of the slope Y can be provided. Since the strut upper part 2U is connected to the strut lower part 2S, the strut upper part 2U is formed in the strut of a protective fence 1, and the protective fence 1 can be constructed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a support column for a protective body such as a rock fall or avalanche such as a protective fence.

  Conventionally, protective fences have been known that are constructed on slopes of mountainsides and receive falling rocks and snow, etc., to prevent falling and inflowing on roads, etc.For example, vertical holes are provided at intervals on slopes of mountainsides. There has been proposed a protective fence such as a rock fall (for example, Patent Document 1) in which pipe struts that are drilled and built in the vertical holes are arranged side by side, and a wire mesh is stretched along with a plurality of cables on each of the pipe struts.

  In addition, a protective fence in which a support net is installed in a plurality of vertical holes drilled at intervals on the setting surface, and a protection net is stretched together with a plurality of cable bodies that are installed with a vertical space between the support columns. (For example, Patent Document 2), or a filled steel pipe for protection structures such as rock fall and avalanche filled with non-shrink mortar which is a mixed material mixed with cement, and this filled steel pipe is fixed to the foundation (for example, Patent Document 3) It has been known.

  In addition, as a means to absorb impacts such as falling rocks by converting them into frictional energy, support columns are provided at predetermined intervals, and horizontal rope materials are moored in a state that allows horizontal sliding between each support column. Both ends of the cable are fixed, shielded between wires by a wire net hooked on a horizontal rope material, and an extra length portion formed by polymerizing the rope material in the middle of the horizontal rope material, and an extra length portion. A buffer that absorbs tension by extending the extra length of the horizontal rope material while maintaining a constant frictional force when a tension higher than the set tension is applied to the horizontal rope material due to the clamping device that clamps with a constant force A shock absorbing fence (for example, Patent Document 4 and Patent Document 5) in which a slab is formed has been proposed.

  In the protective fence of Patent Document 3, natural disasters such as falling rocks and avalanches can be suppressed by effectively receiving snow and avalanches by the protective fence constructed on the slope. In the absorption fence, the shock can be absorbed by sliding of the buffer portion formed in a part of the horizontal rope material before the impact is transmitted to the support, and the load load of the support can be reduced as compared with the conventional case.

  By the way, even if it provides a buffer part, in this kind of guard fence, in order to improve the strength of a support | pillar, the intensity | strength of a support | pillar greatly needs to improve attachment strength with support | pillar itself. For this reason, the lower part of a support | pillar is built in the vertical hole formed in the foundation, and predetermined attachment strength is obtained.

  And depending on the setting conditions of the protective fence, the pillar may be long.For example, in an avalanche prevention fence, the upper fence height corresponding to snow accumulation and the lower part corresponding to this are required, and the pillar is long. Become. On the other hand, when a steel pipe or the like is used as the material for the support, plating is performed from the aspect of rust prevention.

  In such plating treatment, so-called soaking is performed in which a support is immersed in a plating tank, but there are few plating layers capable of processing a long support, and if the support becomes longer, it is disadvantageous in terms of manufacturing process and manufacturing cost. However, all of the above-mentioned patent documents use an integrated object for a support or a pile, and such a problem is expected.

  In addition, since the support is immersed in the high-temperature plating solution in the plating tank, if the support is distorted due to thermal effects, the product error increases. Further, the long support column is easily restricted by the in-vehicle dimensions, and is also easily restricted at the time of carrying in the field, so that the workability is likely to be deteriorated.

  On the other hand, when viewed from the manufacturing side, the length of the column often varies depending on the conditions and place where the column is used. In order to change according to the site, it is not possible to cope with standard dimensions, and it is necessary to manufacture struts of different lengths each time.

  For this reason, there is a problem in that the support column is produced in a large variety and in small quantities, and a standard product cannot be manufactured in advance, resulting in a delay in delivery and an increase in cost.

  In consideration of such a problem, in a support coupling that connects a lower part of the support fixed to the foundation and an upper part of the support connected to the upper part of the lower part of the support, a one-side support for inserting the lower end of the upper part of the support on one side. There has been proposed (for example, Patent Document 6) that includes a cylindrical portion and an other-side receiving cylindrical portion that inserts the upper portion of the lower portion of the column on the other side.

By the way, in the slope part etc. of the mountainside where this kind of protection fence is provided, the method (for example, patent document 7) which builds in a landslide suppression pile in a natural ground and prevents landslide is known.
JP-A-7-197423 JP 2002-115213 A JP 2002-266321 A JP-A-6-197423 JP-A-6-33709 JP 2006-328663 A Japanese Patent Laid-Open No. 9-319936

  In the above-mentioned Patent Document 6, by using a connector, a long column can be transported and carried in a column lower part and a column upper part, and the installation workability on site can be improved. Further, in the case where the support is plated, the upper part of the support and the lower part of the support are shorter than the single body, so that the plating process can be easily performed. Furthermore, the upper part of a support | pillar can be standardized and manufactured beforehand by dividing | segmenting into a support | pillar upper part and a support | pillar lower part.

  By the way, although it is not publicly known, when a protective fence post such as a rock fall is built in the ground and an attempt is made to suppress the landslide as in Patent Document 7, if the strength against the landslide is greater than the rock fall, Therefore, it is necessary to use a strut having a larger diameter and a larger strength than in the case of the above, and as a result, an unnecessarily large strut is used on the ground portion, which is uneconomical.

  Therefore, an object of the present invention is to provide a support column for a protective body such as an avalanche and falling rock that is easy to transport and carry in the support column, has an effect of suppressing landslide, and is economical.

  The invention of claim 1 is a strut that connects a lower strut that is built on the ground and serves as a landslide prevention pile, and an upper strut provided on the upper portion of the lower strut, wherein the lower strut is thicker than the upper strut. is there.

  The invention according to claim 2 inserts and connects the lower end side of the upper portion of the support column to the upper end side of the lower portion of the support column.

  According to a third aspect of the present invention, a connection pipe having substantially the same diameter as that of the lower part of the support is integrally provided on the lower end side of the upper part of the support, and the connection pipe is connected to the lower part of the support.

  According to a fourth aspect of the present invention, a reinforcing body is inserted into the lower portion of the support and a filler is filled.

  In the invention of claim 5, the lower portion of the support and the upper portion of the support are joined by a bonding agent filled in a connecting portion between the lower portion of the support and the upper portion of the support.

  In the invention of claim 6, a thick portion is formed on the upper end side of the lower portion of the column, a thick disc is provided in the lower portion of the column on the proximal end side of the thick portion, and the thick portion is provided in the thick portion. The lower end side of the upper part of the column is inserted and connected.

  The invention according to claim 7 comprises a double pipe.

  According to the structure of Claim 1, the landslide prevention effect is acquired by standing the lower part of a support | pillar on the ground, and the upper part of a support | pillar becomes a support | pillar of a protection body by connecting the support | pillar upper part to the support | pillar lower part, Can be built. Further, by making the lower portion of the support column thicker than the upper portion of the support column, a predetermined strength can be obtained as a landslide suppression pile, and an economical structure can be obtained without unnecessarily increasing the upper support column side on the protective body side.

  In addition, long struts can be transported and loaded separately at the bottom of the strut and the top of the strut, and installation workability can be improved on site. You can also. Further, in the case where the support is plated, the upper part of the support and the lower part of the support are shorter than the single body, so that the plating process can be easily performed. Furthermore, the upper part of a support | pillar can be standardized and manufactured beforehand by dividing | segmenting into a support | pillar upper part and a support | pillar lower part.

  Moreover, according to the structure of Claim 2, since a thin support | pillar upper part is inserted in a thick support | pillar lower part, a connection operation | work becomes easy.

  Moreover, according to the structure of Claim 3, since the connection pipe of the diameter substantially the same as this is connected to the support | pillar lower part, the location from which a diameter changes remove | deviates from an on-site connection location, Strength can be secured.

  Moreover, according to the structure of Claim 4, the intensity | strength of the support | pillar lower part used as a landslide prevention pile can be improved with a reinforcement body and a filler.

  Moreover, according to the structure of Claim 5, a support | pillar lower part and a support | pillar upper part can be joined with predetermined intensity | strength with a joining agent.

  Further, according to the configuration of claim 6, the structure is simplified, and the lower part of the supporting column and the upper part of the supporting column are reinforced by the thick disc and the cylindrical thick part, thereby maintaining the connection strength. Can do.

  Moreover, according to the structure of Claim 7, a thick part can be formed easily.

  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 of the examples, by using a different avalanche / falling rock protector support column, conventional avalanche / fall rock protector support columns were obtained, and the avalanche / fall rock protector column was described respectively. To do.

  Embodiment 1 of the protector according to the present invention will be described below with reference to FIGS. Protective fences 1 such as falling rocks and avalanches as protective bodies are arranged in parallel with a plurality of supports 2, 2... And provided with horizontal rope members 3, 3. A space between the support columns 2, 2... Is closed by a net 4 serving as a protective surface.

  Reference numeral 9 in the figure denotes a retaining rope member that connects the upper portion of the support column 2 and the slope Y on the front side of the protective wall 1. One end of the retaining rope member 9 is connected to the upper portion of the support column 2, The other end of 9 is fixed to the slope Y by an anchor 10.

  Next, the details of the support column 2 will be described. The support column 2 is formed by connecting a support column upper part 2U and a support column lower part 2S, and the support column lower part 2S and the support column upper part 2U are made of a double steel pipe as an example. A load bearing material 101 is used.

  As shown in FIGS. 6 to 8, the load-bearing material 101 has an inner steel tube 103 having a circular cross section inserted and arranged in an outer steel tube 102 having a circular cross section, and a space between the outer steel pipe 102 and the inner steel pipe 103. In addition, a plurality of reinforcing steel bars 104 are arranged, and an outer filling space 105 between the outer steel pipe 102 and the inner steel pipe 103 in which the reinforcing steel bars 104 are arranged is filled with a non-shrink mortar 106 as a filler. The inner filling space 107 inside the inner steel pipe 103 is also filled with the non-shrink mortar 106 and cured.

  The reinforcing steel bar 104 is a deformed steel bar, and has a trapezoidal screw part 111 as an unevenness on the outer periphery thereof in the entire length direction. In addition, on the outer periphery of the reinforcing steel rod 104, plane portions 112, 112 continuous in the length direction are provided on both sides of the cross section, and the trapezoidal screw portion 111 is cut off on the plane portion 112, and both sides of the diametrical direction are provided. The flat portions 112 and 112 are parallel.

  The interval between the flat portions 112 of the reinforcing steel rod 104 is set slightly narrower than the interval between the inner surface of the outer steel tube 102 and the outer surface of the inner steel tube 103. Three or more reinforcing steel rods 104 are arranged in the outer filling space 105. In this example, four reinforcing steel rods 104, 104A, 104A, 104A are arranged in the outer filling space 105 at equal intervals in the circumferential direction. And the adjacent reinforcing steel bars 104, 104A, 104A, 104A are at a position that makes an angle of 90 degrees in the circumferential direction. The reinforcing steel rod 104A has the same configuration as the reinforcing steel rod 104 except for the arrangement position. Further, the reinforcing steel rods 104, 104 are arranged next to the reinforcing steel rod 104, and the three reinforcing steel rods 104, 104, 104 are arranged at an angle of 30 degrees in the circumferential direction.

  The load-bearing material 101 of the lower column 2S is formed with a larger diameter than the load-bearing material 101 of the upper column 2U, that is, the outer steel pipe 102 of the lower column 2S is formed with a larger diameter than the outer steel tube 102 of the upper column 2U. .

  Next, the manufacturing method of the load bearing material 101 will be described. First, as shown in FIG. 7, the reinforcing steel rods 104, 104, 104, 104A, 104A, 104A are fixed to the outer surface of the inner steel pipe 103. In this case, one flat portion 112 is fixed along the outer surface of the inner steel pipe 103 by welding or the like. In this manner, the inner steel pipe 103 to which the reinforcing steel bars 104, 104, 104, 104A, 104A, 104A are fixed is inserted into the outer steel pipe 102. In this case, the inner steel pipe 103 is inserted into the outer steel pipe 102 with the flat portions 112 of the plurality of reinforcing steel rods 104, 104, 104, 104 A, 104 A, 104 A along the inner surface of the outer steel pipe 102. be able to. Then, after insertion, the steel pipes 102 and 103 are arranged with one end side facing upward, and the non-shrinkable mortar 106 is filled into the outer filling space 105 and the inner filling space 107 from the upper opening, and the load-carrying material is cured. 101 is obtained. Note that the load-bearing material 101 before filling with the filler may be plated with zinc or the like. 3 and 5, the inner steel pipe 103, the reinforcing steel bars 104 and 104A, and the non-shrink mortar 106 of the load bearing material 101 are not shown. Specifically, the full length of the support upper part 2U is filled with the non-shrink mortar 106, and the support lower part 2S is filled with the non-shrink mortar 106 over the entire length excluding the receiving portion 11.

  As shown in FIGS. 1 and 3, a receiving portion 11 without the inner steel pipe 103 and the reinforcing steel rod 104 is provided at the tip which is the upper portion of the lower column 2 </ b> S, and at the upper end of the receiving portion 11. A saddle joint 12 is provided, and a saddle joint 13 is provided corresponding to this saddle joint 12 on the outer surface of the upper portion 2U of the support column. The saddle joint 13 has a plurality of air vent holes 13A that also serve as filling confirmation holes. It has been drilled. Bolt insertion holes 14 and 14 are bored in the flange joints 12 and 13 at equal intervals in the circumferential direction, and the lower part of the upper column 2U is inserted into the receiving part 11, and packing 15 The bolts 16 are inserted into the bolt insertion holes 14 in a state of being overlapped with each other, and the nuts are screwed together to join them. And in the state where the flange joints 12 and 13 are overlapped, a gap in the length direction is formed between the lower end of the column upper part 2U and the upper end of the inner steel pipe 103 of the column lower part 2S, and this gap S is 15 mm or less, Although it is preferably about 10 mm, the angle of the column upper portion 2U can be adjusted with respect to the column lower portion 2S by the gap in the length direction and the gap S between the receiving portion 11 and the column upper portion 2U. In this case, for example, the angle can be adjusted by inserting a spacer (not shown) at an appropriate position between the flange joints 12 and 13.

  In addition, a thick portion 17 is provided on the outer surface of the receiving portion 11 in the center in the length direction. The thick portion 17 is disposed across the gap in the length direction between the lower end of the support column upper portion 2U and the upper end of the support column lower portion 2S. The thick part 17 and the flange joints 12 and 13 are made of steel.

  Further, holes 21 and 21 communicating with the gap S are formed on both sides of the lower portion of the receiving port portion 11, and female screw portions are formed in these holes 21 and 21. A filling tube 22 is connected to one of the holes 21. A bent portion 23 bent at approximately 90 degrees is provided at the lower end of the filling tube 22, the end of the bent portion 23 is screwed into the hole 21, and the straight portion 24 of the filling tube 22 is It extends upward along the outer periphery of the receiving part 11, and its upper end reaches near the upper end of the receiving part 11, and is filled with a filler injection hole 26 under the saddle joint 12 by an elbow 25 of approximately 90 degrees provided at the upper end. Is facing outwards. Further, a plug body 27 having a male screw is detachably screwed into the other hole 21.

  As a bonding agent 18 as a filler to be filled in the gap S, an epoxy resin, preferably an epoxy adhesive using a bisphenol A type epoxy resin, is used as a base range. Wet surface curing type is used. As described above, by using a wet surface curing type epoxy adhesive as the bonding agent 34, it is possible to perform the construction even in a site where moisture treatment or the like is difficult.

  Next, the construction method and the like of the protective fence 1 will be described focusing on the support column 2. First, the support lower part 2S is built at the installation location, and the support lower part 2S is used as a landslide prevention pile or the like, for example, driven into the moving layer 121, and the lower part is driven into the immovable layer 122.

  After that, the case where the upper column 2U is connected will be described. As shown in FIG. 2 and the like, a mounting hole 28 is drilled in a mountain slope Y or the like where the protective fence 1 is installed. The column lower part 2S is inserted into the mounting hole 28 and built.

  If there is a gap between the mounting hole 28 and the support column lower part 2S, the attachment hole filling material 29 is filled in this gap to fix the support column lower part 2S at the installation location. Thus, in the construction of the support column 2, the long support column 2 can be constructed separately from the support column lower part 2S and the support column upper part 2U, and the installation workability at the site can be improved. Further, in the case where the support 2 before filling with the non-shrink mortar 106 is plated, the support upper part 2U and the support lower part 2S are shorter than the one, so that the plating process can be easily performed.

  After the construction of the lower column 2S is finished in this way, the upper column 2U is constructed continuously or with time. First, the packing 15 is overlaid on the heel joint 12, the lower end of the upper column 2U is inserted into the receiving portion 11, and the heel joint 13 is overlaid on the heel joint 12, where, as described above, Adjust 2U and tighten the joints 12 and 13 with bolts 16 and nuts to temporarily fix them. Then, the bonding agent 18 is filled into the gap S from the filler injection hole 26. In this case, the plug 27 can be removed and the filling state of the bonding agent 18 can be confirmed. After the confirmation, the hole 21 is closed by the plug 27. Further, the bonding agent 18 filled from the filler injection hole 26 is filled into the gap S from the hole 21 at the lower end of the receiving portion 11, and the internal air is discharged to the outside through the air vent hole 13A along with the filling. The space between the lower end of the column upper portion 2U and the upper end of the column lower portion 2S is filled up to the upper portion of the receiving portion 11.

  Then, as the bonding agent 18 is cured, the support upper part 2U and the support lower part 2S are integrated. In this case, the pulling force can be obtained by bonding with the bonding agent 18, so that the joints of the flange joints 12 and 13 can be released. Further, by using a wet surface curing type epoxy adhesive as the bonding agent 18, it is possible to perform the construction even in a place where moisture treatment is difficult.

  It should be noted that the pillar lower part 2S and the pillar upper part 2U may be connected to each other before installation at the installation place. In this case, the pillar lower part 2S and the pillar upper part 2U are separately carried to the installation place or the vicinity thereof. It becomes easy to carry and carry them in, and the column lower part 2S and the column upper part 2U can be integrated at a place suitable for work in the installation place or in the vicinity thereof.

  Note that the column lower portion 2S and the column upper portion 2U may be connected to each other in a factory or the like other than the installation location or the vicinity thereof. In this case, since the long column 2 is divided into the column lower part 2S and the column upper part 2U and manufactured, it is not subject to restrictions such as plating treatment, and is manufactured in a place suitable for work. The strut 2) can be manufactured.

  As described above, in this embodiment, in accordance with claim 1, a support column that connects the support column lower portion 2S that is built on the slope Y that is the ground and serves as a landslide prevention pile, and the support column upper portion 2U that is provided above the support column lower portion 2S. 2. Since the steel pipe 102 outside the column lower part 2S is thicker than the steel pipe 102 outside the column upper part 2U, the landslide prevention effect of the slope Y can be obtained by setting the column lower part 2S into the slope Y. By connecting the support upper part 2U to the lower part 2S, the support upper part 2U becomes a support pillar of the protection fence 1, and the protection fence 1 can be constructed. Further, by making the support lower part 2S thicker than the support upper part 2U, a predetermined strength can be obtained as a landslide suppression pile, and the protector-side support upper part 2U does not become unnecessarily thick, and an economical structure can be obtained. .

  In addition, the long column 2 can be transported and carried in divided into the column lower part 2S and the column upper part 2U, the installation workability on the site can be improved, and the column lower part 2S serving as a landslide suppression pile is connected. One thing without a place can also be used. Further, in the case of plating the support 2, the support upper part 2 </ b> U and the support lower part 2 </ b> S are shorter than the integrated object, so that the plating process can be easily performed. Furthermore, the support | pillar upper part 2U can be standardized and manufactured previously by dividing | segmenting into the support | pillar upper part 2U and the support | pillar lower part 2S.

  In this way, in this embodiment, since the lower end side of the column upper portion 2U is inserted and connected to the upper end side of the column lower portion 2S, the thin column upper portion 2U is connected to the thick column lower portion 2S. Therefore, the connecting operation can be easily performed.

  In this way, in this embodiment, corresponding to the fourth aspect, the inner steel pipe 103 as the reinforcing body is inserted into the support lower part 2S and the non-shrink mortar 106 as the filler is filled. The strength of the lower column 2S can be improved by the inner steel pipe 103 and the filler 106.

  Further, in this embodiment, in accordance with the fifth aspect of the present invention, since the lower column 2S and the upper column 2U are bonded by the bonding agent 18 filled in the connecting portion between the lower column 2S and the upper column 2U, the bonding agent Thus, the support lower part 2S and the support upper part 2U can be joined with a predetermined strength.

  In addition, as an effect of the embodiment, in the support column 2 in which the support column lower part 2S fixed to the slope Y and the support column upper part 2U provided on the support column lower part 2S are connected, the lower end of the support column upper part 2U is disposed above the support column lower part 2S. Since the receiving part 11 to be inserted and fixed is provided, the upper part 2U and the lower part 2S can be integrated by inserting and fixing the lower end of the upper part 2U to the receiving part 11, and the lower part 2S is installed. By fixing in place, the support column 2 of the protective fence 1 as a protective body can be erected. Since the receiving portion 11 is integrally provided in advance in the support lower portion 2S, the support upper portion 2U and the support lower portion 2S are firmly integrated by securing the bonding strength between the receiving portion 11 and the support upper portion 2U. Can be

  Further, since the lower column 2S and the upper column 2U are joined by the bonding agent 18 filled between the outer surface of the lower column 2S inserted into the receiving port 11 and the inner surface of the receiving port 11, the receiving unit 18 receives the lower column 2S and the upper column 2U. The upper column 2U can be joined to the mouth 11 with a predetermined strength.

  Further, since the lower column 2S and the receiving portion 11 are joined by the flange joints 13 and 12, the lower column 2S and the upper column 2U can be temporarily joined by the flange joints 13 and 12.

  In addition, as an effect on the embodiment, an epoxy resin using an epoxy resin, preferably a bisphenol A type epoxy resin, is used for the base range, and is a two-part, wet surface-curing type comprising a main agent and a curing agent. Since a material is used, the on-site adhesion can be secured, and the bonding strength can be obtained faster than mortar and the like. Further, a bent portion 23 bent at approximately 90 degrees is provided at the lower end of the filling tube 22, and an end portion of the bent portion 23 is screwed into the hole 221. Since the filler injection hole 26 is above the position close to the upper side of the gap S, the bonding agent 18 injected into the filler injection hole 26 is filled into the gap S by its own weight. In addition, the gap S is narrower than that of a conventional filler such as mortar, and the gap S is 15 mm or less.

  Further, as an effect of the embodiment regarding the load bearing material 101, the support upper portion 2U and the support lower portion 2S are composed of the load bearing material 101. The load bearing material 101 includes an outer steel pipe 102 and an inner side disposed in the outer steel pipe 102. Since the steel pipe 103, the reinforcing steel rod 104 disposed between the outer steel pipe 102 and the inner steel pipe 103, and the non-shrink mortar filled between the outer steel pipe 102 and the inner steel pipe 103, the outer and inner steel pipes 103 are provided. The non-shrink mortar is restrained by the steel pipes 102 and 103, the compressive stress is improved, and the reinforcing steel rods 104, 104 and 104 between the outer and inner steel pipes 102 and 103 are set to the tensile region side, thereby reinforcing the reinforcing steel. The rods 104, 104, 104 can improve the tensile stress on the tensile region side against the tensile force caused by bending, and can effectively improve the stress against the load. Moreover, the steel pipes 102, 103 and the steel rods 104, 104 can be improved. , 104, the load bearing material 101 for the support column 2 can be simply configured. Further, since the reinforcing steel rod 104 has a trapezoidal screw portion 111 that is uneven on the outer periphery, the trapezoidal screw portion 111 improves the adhesion between the reinforcing steel rod 104 and the non-shrink mortar, and the reinforcing steel rod 104 and the non-shrink mortar Can be integrated. Further, since the reinforcing steel rod 104 has the flat portions 112 and 112 that are continuous in the length direction on both sides, it is easy to fix to the steel pipes 102 and 103 using the flat portions 112 and 112, and the flat portion 112 is The surface is in contact with the steel pipes 102 and 103, and the operation of inserting the inner steel pipe 103 into the outer steel pipe 102 during manufacture becomes easy. In addition, since three or more reinforcing steel bars 104 and 104A are fixed to the inner surface of the outer steel pipe 102 or the outer surface of the inner steel pipe 103, the inner steel pipe 103 is inserted into the outer steel pipe 102. Therefore, the inner steel pipe 103 is inserted into the outer steel pipe 102 and the inner steel pipe 103 is easily inserted and positioned in the cross-sectional direction, and the manufacturing process can be simplified. Here, the reason why the number of reinforcing steel bars 104, 104A is three or more is that if the inner steel pipe 103 is supported and positioned by the reinforcing steel bars 104, 104A, there are three or more reinforcing steel bars 104, 104A. This is because the three reinforcing steel bars 104, 104A, and 10A can be positioned at a position that forms an angle of 120 degrees in the circumferential direction. Further, since the four reinforcing steel bars 104, 104A, 104A, 104A are arranged at a position that makes an angle of 90 degrees in the circumferential direction, the steel pipes 102, 103 can be positioned with certainty.

  FIG. 9 shows a second embodiment of the present invention. The same reference numerals are given to the same parts as those of the first embodiment, and detailed description thereof is omitted. In this example, the joints 12 and 13 are used. In the state where a plurality of adjustment bolts 31 are screwed into the receiving portion 11 and the lower end of the support upper portion 2U is inserted into the receiving portion 11, the adjustment bolt 31 is used to connect the support lower portion 2S and the support upper portion 2U. Centering and angle adjustment are performed, the bonding agent 18 is filled, and the support lower part 2S and the support upper part 2U are connected.

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

  10 to 17 show a third embodiment of the present invention, in which the same reference numerals are given to the same parts as the above-described embodiments, and in this example, the lower column 2S and the upper column 2U are filled steel pipe 211 as an example. Is used.

  As shown in FIG. 15 and FIG. 16, the filled steel pipe 211 is formed by inserting a reinforcing body 213 having a substantially triangular cross section into a steel pipe 212U, 212S having a circular section as a main body of the support columns 2U, 2S. After fixing to 212S, the inside is filled with a filler 214 such as non-shrink mortar and cured. The reinforcing body 213 includes three reinforcing ribs 215, 215, and 215 made of a plate material arranged in a substantially equilateral triangle, and strip-shaped steel plates 216, 216, and 216 are placed on the tops 215S, 215S, and 215S of the reinforcing ribs 215, 215, and 215, respectively. It is welded. The width W of the strip-shaped steel plate 216 is twice or more the thickness T of the reinforcing rib 215. Further, the strip steel plates 216, 216, 216 of the reinforcing body 213 are attached so as to be able to be inserted through the inner surfaces of the steel pipes 212U, 212S through a slight gap. Further, the reinforcing ribs 215, 215, 215 are provided with through holes 218 to facilitate filling of the filler 214.

  The steel pipe 212S has a diameter larger than that of the steel pipe 212U, the steel pipe 212U is used for the support upper part 2U, and the steel pipe 212S is used for the support lower part 2S.

  At the time of manufacturing, after assembling the reinforcing body 213, the reinforcing body 213 is inserted and arranged from one side opening of the steel pipes 212U and 212S, and the reinforcing body 213 is placed on the inner surface of the steel pipes 212U and 212S on the opening side where the welding rods reach. After welding and fixing, the inside is filled with a non-shrinkable filler 214. Further, as shown in FIG. 16, the end portion of the reinforcing rib 215 is fixed to the strip-shaped steel plate 212 by the welded portion 217.

  As shown in FIGS. 10 and 17, etc., the proximal end side of the thick tube 221 is inserted into the steel pipe 212S at the distal end portion of the lower column 2S, and the thick tube 221 has a length that is approximately one half. Is inserted into the steel pipe 212S, and an insertion portion 221A is constituted by the distal end side of the thick pipe 221 protruding from the steel pipe 212S. The thick pipe 221 is thicker than the steel pipe 212S, and the thick pipe 221 is inserted into the steel pipe 212S. In addition, a short pipe ring 222 having the same configuration as that of the steel pipe 212S is formed, and with the thick pipe 221 inserted into the steel pipe 212S, a gap is formed between the pipe end of the steel pipe 212S and the short pipe ring 222 is thickened. The steel pipe 212S, the short pipe ring 222, and the thick pipe 221 are welded and integrated by the welding portion 223 in the gap portion. In this case, the dimension of the gap is preferably about the thickness of the steel pipe 212S, and the welded portion 223 is finished flush with the outer periphery of the steel pipe 212S by a grinder such as a grinder. The short pipe ring 222 constitutes a part of the steel pipe 212S. The thick pipe 221 is made of an iron pipe such as a steel pipe or a cast iron pipe, can be inserted into the steel pipes 212U and 212S, and is thicker than the thickness of the steel pipes 212U and 212S. It has a thickness more than twice that of steel pipes 212U and 212S.

  Further, a partition plate 224 is integrally provided on the proximal end side of the thick tube 221 so as to abut on the end surface of the thick tube 221, A partition plate 225 is integrally provided. The partition plates 224 and 225 have through holes 224A and 225A, respectively. The partition plates 224 and 225 are provided on the thick tube 221 by welding.

  On the other hand, an insertion body 231 is provided in the steel pipe 212U at the upper end of the support upper part 2U. The insertion body 231 integrally includes a cylindrical portion 232 to be inserted into the insertion portion 221A and a flange portion 233 having a larger diameter. The insert 231 has a plurality (two) of through holes 234 in the length direction. Further, a short pipe 235 having the same configuration as that of the steel pipe 212S is formed, and the proximal end of the short pipe 235 is fixed to the outer periphery of the flange portion 233 by welding or the like.

  On the other hand, the distal end of the steel pipe 212U is welded to the base end side of the flange portion 233 of the insert 231. The reinforcing body 213 is disposed in the steel pipe 212U over almost the entire length. The insert 231 is made of iron such as steel or cast iron. Further, the length of the cylindrical portion 232 is preferably at least half of the inner surface of the thick tip portion 221A to be inserted, whereby the connection strength between the cylindrical portion 232 and the thick tip portion 221A is increased. You can get enough.

  The length dimension S between the front end surface of the flange 233 and the pipe end of the steel pipe 212U is slightly smaller than the length dimension S ′ between the tip of the insertion part 221A and the pipe end of the steel pipe 212S. Further, the length dimension S1 of the cylindrical portion 232 is substantially equal to the length dimension S1 between the tip surface of the partition plate 225 and the pipe end of the steel pipe 212S. Further, a gap of about several millimeters is formed between the front end surface of the cylindrical portion 232 and the front end surface of the partition plate 225 in a state where the end portions of the steel pipe 212U and the steel pipe 212S are in contact with each other. A gap of about several millimeters is formed between the distal end surface of the insertion portion 221A and the distal end surface of the flange portion 233.

  The reinforcing body 213 is inserted and arranged in the steel pipe 212S on the proximal side from the partition plate 225, and the reinforcing body 213 is inserted and arranged in the steel pipe 212U on the proximal side from the insertion body 231. Yes.

  Further, a plurality of through holes 227 in the thickness direction are formed in the thick tube 221 on the proximal end side with respect to the welded portion 23. In this example, a pair of through holes 227 and 227 are formed in opposing positions. The through holes 227 and 227 are located in the vicinity of the welded portion 223.

  In the steel pipe lower part 2S, the filler 214 is filled up to the position of the partition plate 225 by filling the filler 214 from the through hole 225A formed in the partition plate 225, and from the inside of the thick tube 221. A small gap between the thick tube 221 and the steel tube 212S through the through holes 228 and 228 is also filled with the filler 214. On the other hand, by filling the filler 214 from the through hole 234 of the insert 231, the filler 214 is filled at least to the proximal end side of the insert 231. The through hole 234 may be filled with a filler 214.

  Further, a bonding agent injection port 242 for bonding is formed in the short pipe ring 222 of the steel pipe 212S, while a bonding agent injection port 241 for bonding is formed in the steel pipe 212U at a position corresponding to the cylindrical portion 232. The injection ports 241 and 242 are located 180 degrees apart in the circumferential direction. A pipe material such as a hose (not shown) is connected to each of the injection ports 241 and 242. After filling the bonding agent 243, a plug as a connection portion (not shown) is screwed and closed.

  Further, the thick tube 221 has a through hole 228 formed on the distal end side of the partition plate 225, and the through hole 228 is in a connected state between the distal end surface of the cylindrical portion 232 and the partition plate 225. Communicate with the gap.

  Therefore, when the insertion portion 221A of the lower column 2S is inserted into the short tube 234 of the upper column 2U and the end of the short tube 234 and the steel tube 212S abut, the distal end surface of the insertion portion 221A and the distal end surface of the flange 233 A gap with a predetermined dimension is formed between the cylindrical portion 232 and the cylindrical portion 232 of the insert 231 is inserted into the insertion portion 221A. Thereafter, from the inlet 241 using the hose, between the inner surface of the short tube 35 and the steel tube 212S and the outer surface of the thick tube 221, between the tip side inner surface of the thick tube 221 and the insert 231 and the cylinder. The bonding agent 243 is filled between the front end surface of the part 232 and the partition plate 225, and the internal air is released from the other inlet 242. In FIG. 17, the filling range of the bonding agent 243 is a portion indicated by hatching, and between the outer periphery of the cylindrical portion 232 and the inner periphery of the insertion portion 221 </ b> A.

  As the filler 243, a two-part, wet surface-curing type consisting of a base agent and a curing agent, using an epoxy resin, preferably an epoxy-based adhesive using a bisphenol A type epoxy resin for the base range. Is used. In this way, by using a wet surface curing type epoxy adhesive as the bonding agent 243, it is possible to perform the construction even in a site where moisture treatment is difficult.

  As shown in FIG. 2 of the first embodiment, after the erection of the lower column 2S is finished, the upper column 2U is constructed continuously or after a certain time. First, the column upper portion 2U is lowered toward the column lower portion 2S, the insertion portion 221A of the column lower portion 2S is aligned with the short tube 235 of the column upper portion 2U, and the column lower portion 2S is lowered. Is inserted into the insertion portion 221A, the tips of the short pipe 235 and the steel pipe 212S come into contact with each other, and a connected state is established. Then, the bonding agent 243 is filled from the injection port 241.

  When the filled bonding agent 243 is cured, the support upper part 2U and the support lower part 2S are integrated. In this case, a pulling force can also be obtained by bonding with the bonding agent 243, and by using a wet surface curing type epoxy adhesive as the bonding agent 243, it is possible to perform construction even in a site where moisture treatment is difficult. .

  It should be noted that the pillar lower part 2S and the pillar upper part 2U may be connected to each other before installation at the installation place. In this case, the pillar lower part 2S and the pillar upper part 2U are separately carried to the installation place or the vicinity thereof. It becomes easy to carry and carry them in, and the column lower part 2S and the column upper part 2U can be integrated at a place suitable for work in the installation place or in the vicinity thereof.

  Note that the column lower portion 2S and the column upper portion 2U may be connected to each other in a factory or the like other than the installation location or the vicinity thereof. In this case, since the long support 2 is divided into the support lower part 2S and the support upper part 2U and manufactured, it is not subject to restrictions such as plating, and is manufactured in a place suitable for work. And a stable product (post 2) can be manufactured.

  As described above, in this embodiment, the steel pipe 212S of the lower column 2S is thicker than the steel pipe 212U of the upper column 2U, and therefore, the same operations and effects as those of the above embodiments are performed.

  In this way, in this embodiment, corresponding to claim 3, a short tube 235, which is a connecting tube having substantially the same diameter as the column lower portion 2S, is integrally provided on the lower end side of the column upper portion 2U. Since the lower part 2S is connected, and the short pipe 235 having the same diameter as this is connected to the lower part 2U of the column, the part where the diameter changes is removed from the connection part on the site, Can be secured.

  Further, as an effect of the embodiment, in the support column 2 in which the support column lower part 2S fixed to the base slope Y and the support column upper part 2U provided on the support column lower part 2S are connected, one of the support column upper part 2U and the support column lower part 2S. At the end of a lower column 2S, the thick tube 221 is inserted and fixed at the proximal end of the thick tube 221 that is thicker than the steel tubes 212S and 212U as the main body of the column 2, and the thick tube 221 protrudes from the distal end of the thick tube 221 221A is provided, and this thick insertion portion 221A is inserted into the end portion of the support column upper portion 2U, which is the other of the support column upper portion 2U and the support column lower portion 2S, and in the end portion of the support column upper portion 2U, on the distal end side of the thickness insertion portion 221A. Since the insertion body 231 to be inserted is provided, the thick insertion portion 221A is inserted into the other end portion, and the insertion body 231 on the other end side is inserted into the thick insertion portion 221A, so A thick-walled tube 221 is located in the connection point with the upper column 2U, and Tip of the thick tube 221 provided towards, since the insert 231 which is provided on the other are connected are inserted, it can be firmly connected to the strut lower 2S and the support upper 2U.

  In addition, since the filling material 214 is filled in the thick tube 221, the strength of the thick tube 221 is further improved by the filling material 214 filled therein.

  In addition, since the distal end side of the thick insertion portion 221A is inserted between the inner periphery of the end of the column upper portion 2U that is the other and the outer periphery of the cylindrical portion 232 of the insertion body 231, the distal end of the thick tube 221 and the insertion body 231 are inserted. And are connected.

  Further, in this embodiment, since the column upper portion 2U and the column lower portion 2S are bonded by the bonding agent 243 filled between the ends of the column upper portion 2U and the column lower portion 2S and the thick tube 221, the bonding is performed. With the agent 243, the support upper part 2U and the support lower part 2S can be joined to each other with a predetermined strength via the thick tube 221.

  Further, since the distal end side of the thick insertion portion 221A and the insert 231 are joined by the bonding agent 243 filled between the distal end side of the thick insertion portion 221A and the insert 231, The distal end side of the thick insertion portion 221A and the insert 231 can be joined with a predetermined strength.

  In addition, a gap is provided between the steel pipe 212S and the steel pipe ring 222 constituting a part of the steel pipe on the front end side of the column lower part 2S, and the steel pipe 212S, the steel pipe ring 222, and the thick pipe 221 are integrally welded in this gap. Therefore, by setting the position of the steel pipe ring 222, it is possible to accurately set the tip position of the steel pipe 212S consisting of the end of the steel pipe ring 222. In addition, a gap is provided between the steel pipe 212U and the short pipe 235 constituting a part of the steel pipe on the front end side of the support upper part 2U, and the steel pipe 212U, the short pipe 235, and the insert 231 are welded and integrated in this gap. Therefore, the insert 231 disposed inside can be firmly fixed to the steel pipe 212U. Further, since the insert 231 on the other end side is fitted into the thick insertion portion 221A, the tip of the thick tube 221 can be reliably fixed to the steel pipe 212U of the other column upper portion 2U in a positioned state. .

  Further, as an effect of the embodiment of the filled steel pipe 211, the support upper part 2U and the support lower part 2S are composed of the filled steel pipe 211 provided with the reinforcing body 213, and the cross section of the steel pipes 212U and 212S is reinforced with a triangular cross section. Since the ribs 215, 215, 215 are inscribed and the two vertices 215S of the reinforcing ribs 215, 215, 215 are disposed on the tensile region side of the steel pipe, the reinforcing ribs 215, 215, 215 inside the steel pipe 212U, 212S are used. In the cross section, the filler 14 which is the cement mixture inside is restrained, the compressive stress is improved, and there is a rib 215 connecting the two vertices 215S and 215S of the reinforcing ribs 215 and 215 on the tensile region side. The tensile stress on the tensile region side is improved against the tensile force generated by the above, and the stress with respect to the load can be effectively improved.

  18 to 22 show a fourth embodiment of the present invention, in which the same reference numerals are given to the same portions as the above-described embodiments, and in this example, the lower column 2S and the upper column 2U are filled steel pipe 211 as an example. Is used.

  As shown in FIGS. 20 and 22, in the filled steel pipe 211, a reinforcing body 213 having a substantially triangular cross section is inserted into the steel pipes 212U and 212S having a circular cross section as the main body of the support columns 2U and 2S, as in the fourth embodiment. After being placed and fixed to the steel pipes 212U and 212S, a filler 214 such as a non-shrink mortar is filled inside and cured.

  A receiving portion 260 is provided at the tip (upper end) of the lower column 2S, and the receiving portion 260 is provided with a partition plate 261 that is a thick disc at the tip of the steel pipe 212S. The outer diameter is substantially equal to the inner diameter of the steel pipe 212S, and a plurality of stepped holes 262 are formed through the partition plate 261. The partition plate 261 is thicker than the steel pipe 212S. Further, the receiving port 260 is provided with a short pipe 264 with a gap 263 at the tip of the steel pipe 212S, and the short pipe 264 is the same steel pipe as the steel pipe 212S. The steel pipe 212S, the short pipe 264, and the partition plate 261 are welded by a welding portion 265 provided in the gap 263. In this case, a plurality of welded portions 265, 265,... Are provided at intervals in the circumferential direction of the gap 263, and specifically, eight welded portions 265, 265,. Provided.

  Further, an inner tube 266 is inserted into the short tube 264, and the proximal end of the inner tube 266 is welded to the partition plate 261 by a welding portion 266A, and the distal end of the inner tube 266 is connected to the distal end of the short tube 264. The short pipe 264 and the inner pipe 266 constitute a thick part 267 thicker than the steel pipe 212S, and the receiving part 260 is formed from the partition plate 261 and the thick part 267. Composed. Further, a reinforcing plate 268 is attached to the inner periphery of the inner tube 266 on the compression region side of the support column 2 when a load is applied. As a manufacturing procedure, after the inner tube 266 is welded to the partition plate 261 by the welded portion 266A, the short tube 264 is externally fitted to the inner tube 266, and the welded portions 265 and 266B are applied. A plurality of air vent holes 269 are provided on the distal end side of the inner tube 266, and a bonding agent injection port 270 for bonding is formed on the proximal end side of the inner tube 266. Correspondingly, a bonding agent injection port 271 for bonding in which a screw portion is formed is formed through the short tube 264. These air vent holes 269 allow the air between the short pipe 264 and the inner pipe 266 to escape to the outside, and plating can also be applied to this portion.

  The completed support lower part 2S is put in a plating tank, soaked and plated, and then the stepped hole 262 is closed with a lid 272.

  On the other hand, a lid plate 273 is provided at the lower end portion of the support upper portion 2U, and the opening of the lower end portion is closed by the lid plate 273. Also in this case, the completed support upper part 2U is put in a plating tank, soaked and plated, and then a lid plate 273 is attached to the lower end of the support upper part 2U.

  A plurality of reinforcing steel bars 274 are arranged on the inner surface of the steel pipe 212S of the lower column 2S, and these reinforcing steel rods 274 counter the tensile force applied to the cross section of the lower column 2S.

  Then, the lower end of the support upper part 2U is inserted into the thick part 267, and the cover plate 273 of the support upper part 2U and the partition plate 261 of the support lower part 2S come into contact with each other. Thereafter, the bonding agent 243 is filled between the inner surface of the inner tube 266 and the outer surface of the upper end portion of the support column upper portion 2U from the inlets 270 and 271 using the hose, and from the upper end of the inner tube 266 to the inner portion. Let the air escape. The bonding agent 243 is also filled between the inner tube 266 and the short tube 264.

  As shown in FIG. 2 of the first embodiment, after the erection of the lower column 2S is finished, the upper column 2U is constructed continuously or after a certain time. First, when the column upper part 2U is lowered toward the column lower part 2S, the lower end of the column lower part 2S is aligned with the thick part 267 of the column upper part 2U, and the column lower part 2S is lowered, the column part 232 of the insert 231 is formed. Inserted into the insertion portion 221A, the lid plate 273 of the support column upper part 2U and the partition plate 261 of the support column lower part 2S come into contact with each other to be in a connected state. Then, the bonding agent 243 is filled from the injection port 271. After filling the bonding agent 243, a plug is screwed into the injection port 271 to close it.

  When the filled bonding agent 243 is cured, the support upper part 2U and the support lower part 2S are integrated. In this case, a pulling force can also be obtained by bonding with the bonding agent 243, and by using a wet surface curing type epoxy adhesive as the bonding agent 243, it is possible to perform construction even in a site where moisture treatment is difficult. .

  It should be noted that the pillar lower part 2S and the pillar upper part 2U may be connected to each other before installation at the installation place. In this case, the pillar lower part 2S and the pillar upper part 2U are separately carried to the installation place or the vicinity thereof. It becomes easy to carry and carry them in, and the column lower part 2S and the column upper part 2U can be integrated at a place suitable for work in the installation place or in the vicinity thereof.

  Note that the column lower portion 2S and the column upper portion 2U may be connected to each other in a factory or the like other than the installation location or the vicinity thereof. In this case, since the long support 2 is divided into the support lower part 2S and the support upper part 2U and manufactured, it is not subject to restrictions such as plating, and is manufactured in a place suitable for work. And a stable product (post 2) can be manufactured.

  Thus, in this embodiment, the steel pipe 212S of the lower column 2S is thicker than the steel pipe 212U of the upper column 2U, and the lower end of the upper column 2U is inserted and connected to the upper end of the lower column 2S. The lower part of the support upper part 2U is inserted into the thick part 267 of 2S and the bonding agent 243 is filled. Since 2U is joined, the same operations and effects as those in the above embodiments are performed.

  Further, in this embodiment, in correspondence with the sixth aspect, the thick portion 267 is formed on the upper end side of the lower column portion 2S, and the thick wall portion 267 is formed on the proximal end side of the thick portion 267 in the lower column portion 2U. Since the partition plate 261 that is a circular disc is provided and the lower end side of the upper column 2U is inserted and connected in the thick portion 267, the structure is simplified, and the lower column 2S and the upper column 2U with the edges are cut off, The connecting plate 261 can be reinforced by a thick partition plate 261 and a cylindrical thick portion 267 to maintain the connection strength.

  In this way, in this embodiment, corresponding to claim 7, the thick portion 267 is composed of a double tube of the short tube 264 and the inner tube 266, so that the thick portion can be easily formed. .

  Further, as an effect of the embodiment, the filling material 243 is filled with the bonding agent 243 between the inner surface of the thick portion 267 and the outer surface of the upper end portion of the column upper portion 2U, and the thick tube 221 is filled with the filling material 243 filled inside. Strength is further improved.

  Further, since the base end side of the steel pipe 212U of the support upper part 2U is inserted into the thick part 267 of the support lower part 2S, the wall pressure part 267 and the base end of the support upper part 2U are connected.

  FIG. 23 shows a fifth embodiment of the present invention, in which the same reference numerals are given to the same portions as the above-described embodiments. In this example, in the column 2 of the above-described embodiment 4, the receiving portion is formed above the column upper portion 2U. A column middle portion 2N provided with a column 260 is provided, and the column upper portion 2U having a diameter smaller than that of the column middle portion 2N is connected to the receiving portion 260 of the column middle portion 2N. 2S, a column middle part 2N, and a column upper part 2U.

  Also in this example, this lower column 2S is used as a landslide suppression pile, for example, driven into the moving layer 121, the lower is driven into the non-moving layer 122, and the middle column 2N and the upper column 2U of the fence 1 It becomes a support. In addition, the lower column 2S is inserted into the mounting hole 28 and built.

  As described above, in this embodiment, the steel pipe 212U in the middle column 2U is thicker than the steel pipe 212U in the upper column 2U, the steel pipe 212S in the lower column 2S is thicker than the steel pipe 212U in the middle column 2N, and the column on the upper end side of the lower column 2S. The lower end side of the middle part 2N is inserted and connected, the lower end side of the upper part 2U is inserted and connected to the upper end side of the middle part 2N, and the inner steel pipe 103 as a reinforcement is inserted into the lower part 2S of the pillar. The lower strut 2S and the upper strut 2U are joined by the bonding agent 18 which is filled with the non-shrink mortar 214 as the filler and is filled in the connecting portion between the lower strut 2S and the middle strut 2N. Since the column middle part 2N and the column upper part 2U are bonded by the bonding agent 243 filled in the connecting portion, the same operations and effects as those in the above embodiments are performed.

  Further, in this embodiment, the lower column 2S and the upper column 2U are connected by the middle column 2N having a diameter smaller than that of the lower column 2S and larger than the upper column 2U, and the ground portion is connected to the middle column 2N and the upper column 2U. Therefore, it is possible to form the column upper portion 2U having a small load applied from the lower portion due to falling rocks, avalanches or the like with a small diameter, and an efficient structure can be obtained.

  FIG. 24 shows a sixth embodiment of the present invention, in which the same reference numerals are given to the same portions as the above-described embodiments, and in this example, an arch portion 281 is formed in which the upper portion of the support upper portion 2U is formed in a curved shape on the anti-mountain side. is doing.

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

  Further, by forming the arch portion 281 in this way, the height from the slope S to the upper end of the support column 2 can be increased.

  FIG. 25 shows a seventh embodiment of the present invention, in which the same reference numerals are assigned to the same parts as those in the above-described embodiments. In this example, in the column 2 of the sixth embodiment, the upper portion of the column upper portion 2U is curved on the opposite side. The arch part 281 formed in the above is formed.

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

  Further, by forming the arch portion 281 in this way, the height from the slope S to the upper end of the support column 2 can be increased.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, a receiving part may be provided at the lower end of the upper part of the support, and the lower end of the lower part of the support may be inserted and connected to the receiving part. Various kinds of reinforcing bodies can be used. Further, in Examples 5 and 7, an example in which the support column is reduced in three stages toward the upper side is shown. However, in other embodiments, the lower column is connected to the lower column and the upper column is connected to the upper column. It may be configured so that the column becomes smaller in three steps toward the upper side, and moreover, the column is composed of four or more columns of the column lower part, the column middle part, and the column lower part by using a plurality of large column middle parts. May be.

It is a longitudinal cross-sectional view which shows the joining state which shows Example 1 of this invention. It is a plane sectional view showing a joined state same as the above. FIG. 4 is a cross-sectional view around the receiving port. FIG. 3 is a plan view of the receiving port. The lower end side of the lower part of the column is shown, FIG. 5 (A) is a plan sectional view, and FIG. 5 (B) is a longitudinal sectional view. It is sectional drawing of the load-bearing material which comprises a support | pillar lower part and a support | pillar upper part same as the above. It is sectional drawing of the outer side steel pipe which fixed the reinforcement steel rod same as the above. FIG. 8 (A) is a front view and FIG. 8 (B) is a side view. It is a longitudinal cross-sectional view which shows the joining state which shows Example 2 of this invention. It is sectional drawing of the connection location of the support | pillar upper part and support | pillar lower part which show Example 3 of this invention. It is a partially notched front view of the front end side of a support | pillar lower part same as the above. It is an exploded explanatory drawing of the member of the front end side of a support | pillar lower part same as the above. It is a partially notched front view of the front end side of a support | pillar upper part same as the above. FIG. 14 (A) is a plan view and FIG. 14 (B) is a front view. FIG. 11 is a sectional view taken along line AA in FIG. It is an expanded sectional view of the principal part of a reinforcement body same as the above. It is explanatory drawing of the connection location of a support | pillar lower part and a support | pillar upper part same as the above. It is a longitudinal cross-sectional view which shows the joining state which shows Example 4 of this invention. It is a longitudinal cross-sectional view of the upper part of the column. FIG. 2 is a plan sectional view of the upper part of the column. It is a longitudinal cross-sectional view of the lower part of the column. FIG. 3 is a plan sectional view of the lower part of the column. It is a side view which shows Example 5 of this invention. It is a side view which shows Example 6 of this invention. It is a side view which shows Example 7 of this invention.

Explanation of symbols

1 Guard fence (protector)
2 Prop 2U Prop upper part 2S Prop lower part
11 Receiving part
12 Fitting
13 Fitting
18 Bonding agent Y slope (ground)
106 filler
103 Inside steel pipe (reinforcing body)
212U, 212S steel pipe
213 reinforcement
214 filler
235 Short pipe (connection pipe)
260 Receiving part
261 Partition plate (disc)
264 short tube
266 Inner pipe
267 Thick part

Claims (7)

An avalanche, fallen rock, etc. characterized by a strut that is built on the ground and serves as a landslide suppression pile, and a strut upper portion that is provided at the top of the strut lower portion. Protective body support. The support column for an avalanche / falling rock protection body according to claim 1, wherein the lower end side of the upper column is inserted and connected to the upper end of the lower column. 3. Avalanche and rock fall protection according to claim 1 or 2, wherein a connecting pipe having the same diameter as that of the lower part of the column is integrally provided on the lower end side of the upper part of the column, and the connecting pipe is connected to the lower part of the column. Body support. The support column for an avalanche / falling rock protection body according to any one of claims 1 to 3, wherein a reinforcing member is inserted into the lower portion of the support column and a filler is filled therein. The avalanche / falling rock protection body according to any one of claims 1 to 4, wherein the support pillar lower part and the support pillar upper part are joined by a bonding agent filled in a connecting portion between the support pillar lower part and the support pillar upper part. Props. A thick part is formed on the upper end side of the lower part of the column, a thick disk is provided in the lower part of the column on the proximal side of the thick part, and the lower end side of the upper part of the column is inserted into the thick part. The support column for a protection body such as an avalanche or rock fall according to any one of claims 2 to 5, wherein the support column is connected. The support of a protective body such as an avalanche and fallen rock according to claim 6, wherein the thick part is a double pipe.

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