JP2006328663A - Strut connection device of snowslide/rock fall protective body and strut connection structure and struct connection method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a strut connection device of a snowslide/rock fall protective body enabling the easy transportation and carrying-in of struts, providing excellent construction efficiency, and enabling the manufacture of strut upper parts beforehand, and a strut connection structure and a strut connection method using the strut connection device. <P>SOLUTION: In this strut connection device 5 connecting a strut lower part 2S fixed to a slope S to a strut upper part 2U connected to the upper part of the strut lower part 2S, one side receiving tube part 5U in which the lower end of the strut upper part 2U is fixed to one side and the other side receiving tube part 5S in which the upper part of the strut lower part 2S is inserted is fixed to the other side. The upper end of the strut lower part 2S is inserted into the other side receiving tube part 5S, the lower end of the strut upper part 2U is inserted into the one side receiving tube part 5U, and the strut lower part 2S is fixedly inserted into the slope S to vertically install the strut 2 of a protective fence 1 as the protective body. As a result, since the long strut 2 can be divided into the strut lower part 2S and the strut upper part 2S before transportation and carrying-in, an installation work efficiency at site and work efficiency in manufacturing the strut can be increased to reduce manufacturing time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a column connecting tool for a protective body such as a rockfall or avalanche such as a protective fence, a column connecting structure and a column connecting method using the same.

  Conventionally, protective fences have been known that are constructed on slopes of mountainsides to prevent falling or inflowing on roads etc. by receiving falling rocks and snow, etc.For example, vertical holes are provided at intervals on slopes of mountainsides. A protective fence (Patent Document 1) such as falling rocks has been proposed in which pipe struts that are drilled and installed 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 addition, in the shock absorbing pile, a buried cylindrical body, a pile main body inserted into the cylindrical body so that the upper part protrudes on the ground, and a space between the cylindrical body and the pile main body are filled. There exists what was provided with the filler (patent document 6).
JP-A-7-197423 JP 2002-115213 A JP 2002-266321 A JP-A-6-197423 JP-A-6-33709 JP-A-9-203036

  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 can be 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. In addition, the long support column is easily limited 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.

  Accordingly, the present invention provides a strut connector for an avalanche, rockfall, and other protective body that can be easily transported and carried in, has excellent workability, and can be manufactured by standardizing the top of the strut, and a strut using the same. It aims at providing a connection structure and a column connection construction method.

  According to the first aspect of the present invention, there is provided a column connector for connecting a column lower portion fixed to a foundation and a column upper portion connected to the upper portion of the column lower portion. And an other side receiving tube portion for inserting an upper portion of the lower portion of the support column on the other side.

  According to a second aspect of the present invention, a guide surface located inside the inner peripheral surface is provided on the inner peripheral surface of the one-side and other-side receiving tube portions.

  According to a third aspect of the present invention, there is provided a column connection structure using the column connection tool according to the first aspect, wherein an upper end of the lower column is inserted into the other-side tube receiving portion, and an upper portion of the column is inserted into the one-side tube receiving portion. A lower end is inserted, and a filler is filled between the other side receiving cylinder part and the upper end of the lower column, and a filler is filled between the one side receiving cylinder and the lower end of the upper column. It will be.

  Invention of Claim 4 uses the support | pillar coupling tool of Claim 1, and while inserting the upper end of the said support | pillar lower part in the said other side receiving cylinder part, inserting the lower end of the said support | pillar upper part in the said 1 side receiving cylinder part, The filler is filled between the other-side receiving cylinder part and the upper end of the lower column, and the filler is filled between the one-side receiving cylinder part and the lower end of the upper column. It is a method of attaching the lower part of the column.

  According to the structure of Claim 1, while inserting the upper end of the said support | pillar lower part in the said other side receiving cylinder part, inserting the lower end of the said support | pillar upper part in the said 1 side receiving cylinder part, and fixing a support | pillar lower part to an installation place. Thus, the support column can be erected. Therefore, a long support | pillar can be conveyed and carried in separately in a support | pillar lower part and a support | pillar upper part, and the installation workability | operativity in a field 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.

  Moreover, according to the structure of Claim 2, the edge part of a support | pillar can be smoothly inserted in a receiving cylinder part with a some guide surface.

  According to the configuration of claim 3, the upper end of the lower portion of the support column is inserted into the lower receiving tube portion, the lower end of the upper portion of the support column is inserted into the upper receiving tube portion, and the lower receiving tube portion and the support column are inserted. Filler is filled between the upper end of the lower part, and the filler is filled between the upper receiving cylinder part and the lower end of the lower part of the pillar, and the lower part of the pillar is fixed to the foundation, so that the upper part of the pillar and the pillar The lower part can be integrated and this integrated support column can be erected.

  According to the configuration of the fourth aspect, after the upper column and the lower column are manufactured, the upper column and the lower column are connected to each other and integrated with each other at a predetermined place. If the predetermined place is a pillar manufacturing factory, a pillar having excellent dimensional accuracy can be obtained. On the other hand, if the predetermined place is an installation place, the upper part of the support and the lower part of the support can be separated and carried into the installation place. Therefore, it is easy to carry and carry to the installation location.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting an avalanche / falling rock protector strut connector different from the conventional one, and a strut connecting structure and a strut connecting method using the same, a conventional avalanche / fall rock protector strut connector. A column connection structure and a column connection method using the same, and a column connection tool for a protection body such as an avalanche and falling rock, and a column connection structure and a column connection method using the same are described.

  Hereinafter, Embodiment 1 of the guard fence of the present invention will be described with reference to FIGS. The protective fence 1 for falling rocks, avalanches, etc. has a plurality of support columns 2, 2... Arranged at intervals, and horizontal rope members 3, 3. 2... Are closed by a net 4.

  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 by a support column connector 5, and the support column lower part 2S and the support column upper part 2U are plated. A filled steel pipe in which a steel pipe K is filled with a filler J such as concrete is used. In addition, hot dip galvanization is illustrated as a plating process.

  The column connector 5 is formed of FCD (Spheroidal Graphite Cast Iron) or the like, has a shape that is targeted on both sides in the center in the length direction, and includes a one-side receiving tube portion 5U that inserts the lower end of the column upper portion 2U on one side. The other side receiving cylinder part 5S which inserts the upper end of the said support | pillar lower part 2S is provided in the other side, and both these receiving cylinder parts 5U and 5S and the center part 6 of the connector 5 are comprised integrally. In addition, you may manufacture the support | pillar coupling tool 5 by welding using steel materials. Further, the support coupler 5 may be plated.

  Both the receiving tube portions 5U and 5S are provided with tube portion main bodies 51 and 51, respectively. The tube portion main body 51 is provided with a flange portion 52 at the open end, and the outer periphery of the flange portion 52 is the outer periphery of the tube portion main body 51. The inner periphery of the flange 52 is formed with an inner edge 53 having a smaller diameter than the other inner surface, and an engagement step 54 is formed at the opening-side inner corner of the inner edge 52. A plurality of female screw holes 55 in the connecting tool length direction are formed in the opening end face of the cylindrical portion main body 51. A center-facing step portion 53D is formed on the center portion 6 side of the inner edge portion 53.

  In addition, the flange portion 52 is provided with a plurality (four locations) of internal and external end female screw holes 56 at equal intervals in the circumferential direction, and further, the end female screw holes are formed on the inner surface of the cylindrical body 51. An inner rib portion 57 extends from the portion where 56 is formed toward the central portion 6, and a central female screw hole 56 </ b> A penetrating the cylindrical portion main body 51 is provided in the circumferential direction on the central portion 6 side of the inner rib portion 57. A plurality (four places) are formed at equal intervals. The distance between the opposing inner rib portions 57, 57 is substantially the same as the diameter dimension of the inner edge portion 53, and the rib inner surface 57N forming the arc shape of the inner rib portion 57 is the inner peripheral surface of the cylindrical portion main body 51. It is located inside 51N, and the guide surface is constituted by the rib inner surface 57N. The inner rib portion 57 extends from the inner edge portion 53 to the central portion 6 side with substantially the same width, and has an enlarged portion 57K at the end portion, and the enlarged portion 57K has a distal end facing the central portion 6 side. The center-facing stepped portion 57D is provided. A reinforcing rib portion 58 is provided on the outer surface of the column coupling 5 on the central portion 6 side of the column coupling 5 at the portion where the central female screw hole 56A is formed. A reinforcing rib portion 58A is provided between the reinforcing rib portions 58 having 56A. These reinforcing rib portions 58 and 58A have the same shape, and are arranged on the center portion 6 side in the length direction of the column connector 1. The width of the inner rib portion 57 is narrower than the interval between the inner rib portions 57 and 57 adjacent in the circumferential direction.

  An abutting inner flange 61 is provided around the inner periphery of the central portion 6, and a through hole 62 is formed at the center of the abutting inner flange 61. A plurality of communication grooves 63 are formed in the radial direction on the outer surface of the abutting inner flange 61.

  Further, the flange portion 52 is provided with an air vent hole 59 between the end female screw holes 56, 56, and the central portion 6 is provided with a position between the central female screw holes 56A, 56A. In addition, a filling hole 65 is formed, and the filling hole 65 communicates the through-hole 62 with the outside of the connector 5, and the filling hole 65 has a check that prevents the filler from flowing out to the outside. A valve 66 is provided. The check valve 66 is formed by forming a cap plate 66A that closes the through hole 62, and provided with, for example, a cross-shaped cut 66B on the cap plate 66A. A filling nozzle (not shown) is inserted into the filling hole 65, and after filling, the filling nozzle is pulled out to the outside, so that a notch 66B can be narrowed and closed. The filling hole 65 and the air vent holes 59 on both sides are disposed at substantially the same position in the circumferential direction of the column connector 5.

  The length of the portion into which the column upper portion 2U or the column lower portion 2S of the cylindrical body 51 is inserted, that is, the length L from the outer surface of the abutting inner collar portion 61 to the end surface of the cylindrical portion main body 51, The diameter L is larger than the diameter D, and preferably the length L is 1.4 times or more the diameter D. In the drawing, the length L is approximately 1.5 times. Further, the length of the reinforcing rib portions 58 and 58A is preferably such that the diameter D is larger than the diameter, and this can effectively counter the bending moment applied to the column connector 5.

  In the figure, reference numeral 71 denotes a packing material such as a shield packing attached to the engagement step portion 54, which is fixed by a pressing member 72 having a substantially ring shape, and the pressing member 72 is screwed into the female screw hole 55. The fixing member 73 such as a bolt is fixed to the end portion of the cylindrical portion main body 51. In the figure, reference numeral 74 denotes a centering adjusting member such as a bolt screwed into the female screw holes 56, 56A.

  In the figure, reference numeral 75 denotes a filler, and a grout material such as a high fluidity non-shrink mortar is used. Reference numeral 76 in the figure denotes a socket that closes the air vent hole 59.

  Next, the construction method and the like of the protective fence 1 will be described focusing on the support column 2. First, the case where the support column upper part 2U is connected after the installation of the support column lower part 2S at the installation location will be described. The mounting hole 81 is drilled in the slope S of the mountain where the protective fence 1 is installed, Boring is used, and the lower column 2S is inserted into the mounting hole 81 and built. In addition, before inserting the upper end of the column lower part 2S into the mounting hole 81, the column upper part 2S is connected to the column lower part 2S by inserting the upper end into the other side receiving tube portion 5S of the column connection tool 5. deep. In this case, since the outer periphery of the column lower part 2S is guided by the plurality of rib inner surfaces 57N, the upper end of the column lower part 2S can be smoothly inserted into the other-side receiving cylinder part 5S, and further, the upper end of the column lower part 2S is Since it abuts against the abutting inner flange 61, the insertion dimension can be made constant. Further, after the insertion, the packing material 71 is attached to the lower end of the support coupling 2 to close the gap between the support lower part 2S and the other side receiving cylinder part 5S. Further, the adjusting members 74 are respectively screwed into the eight female screw holes 56, 56, 56, 56, 56A, 56A, 56A, 56A of the other side receiving cylinder portion 5S, and the adjusting members 74 are turned. The screwing position is adjusted, and the tips of the adjusting members 74 are abutted against the outer peripheral surface of the other side receiving cylinder part 5S, thereby aligning the other side receiving cylinder part 5S and the column lower part 2S.

  After doing so, the support lower part 2S is inserted into the mounting hole 81 at a predetermined depth, and for example, as shown in FIG. 1, the lower end of the support lower part 2S is inserted to the surface position of the installation location. If there is a gap between the mounting hole 81 and the lower column 2S, a filler (not shown) is filled in the gap to fix the lower column 2S at the installation location. Thus, in the construction of the support column 2, the long support column 2 can be applied with the support column lower part 2S separated from the support column upper part 2U, and the installation workability at the site can be improved. Further, in the case where the steel pipe K of the support 2 is plated, the support upper part 2U and the support lower part 2S are shorter than the integrated body, 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. The support | pillar upper part 2U is lifted and the lower end of the support | pillar upper part 2U is inserted in the one side receiving cylinder part 5U. After the insertion, the adjustment members 74 are screwed into the eight female screw holes 56, 56, 56, 56, 56A, 56A, 56A, 56A of the one side receiving cylinder 5U, respectively, and the other side receiving cylinder The socket 76 is inserted and closed in the 5S air vent hole 59, a filling nozzle (not shown) is inserted into the filling hole 65, and the filling material 75 is filled inside from the tip of the filling nozzle. The gap between the lower part 2S and the inside of the column connector 5 is filled. In this case, even after the upper column 2 </ b> U and the lower column 2 </ b> S are inserted into the column connector 5, the filler 75 filled in the through hole 62 from the filling hole 65 passes through the communication groove 63 below the through hole 62. After filling between the lower part 2S and the other side receiving cylinder part 5S and completing the lower side filling of the column connecting tool 5, the column upper part 2U and the one side receiving cylinder part 5U pass through the communication groove 63 on the through hole 62. When the filling surface gradually rises and reaches the air vent hole 59 of the one side receiving tube portion 5U, the filling of the filler 75 can be visually confirmed through the air vent hole 59. When the filling of the filler 75 is confirmed, the air vent hole 59 is closed with the socket 76. Even when the filling is completed and the filling nozzle is pulled out from the filling hole 65, the check valve 66 prevents the filling material 75 from leaking from the filling hole 65 to the outside. In addition, before the filler 75 is hardened, the column connecting member 5 can be aligned with the column upper portion 2U and the column lower portion 2S using the adjusting member 74.

  Next, the case where the column lower part 2S and the column upper part 2U are connected by the column connection tool 5 before installation at the installation site will be described. At the factory, the column lower part 2S, the column upper part 2U and the column connection tool 5 are connected. Create it and carry it to the installation location or its vicinity. Then, at or near the installation location, for example, the column lower portion 2S and the column upper portion 2U are horizontally oriented, and the respective end portions are inserted into the column coupler 5 that is also horizontally oriented, and are aligned by the adjusting members 74. Further, both sides of the column coupling 5 are sealed with packing material 71, and the filling hole 65 or the filling material 75 is filled with the filling hole 65 and the air vent holes 59, 59 facing upward, and the air vent holes 59 on both sides are filled. , 59, the air vents 59, 59 are closed by the sockets 76, 76, the filler 75 is cured, and the column lower part 2S is inserted into the mounting hole 81 to erect the column 2 .

  In this case, since the lower column 2S, the upper column 2U, and the column connector 5 are separately carried into the installation place or the vicinity thereof, they can be easily transported and carried, and are suitable for work in the installation place or the vicinity thereof. At the place, the column lower part 2S and the column upper part 2U can be integrated by the column connector 5.

  Next, the case where the column lower part 2S and the column upper part 2U are connected by the column connection tool 5 outside the installation place or the vicinity thereof will be described. After the column connection part 5 is manufactured, the column lower part 2S and the column upper part 2U are manufactured. In the same manner as in the case where the column lower part 2S and the column upper part 2U are connected to each other by the column connection tool 5 at the installation place described above at the manufacturing factory or other factories where the column is manufactured, or at a place suitable for connection work. The column lower part 2S and the column upper part 2U are connected by the column connection tool 5, and the connected column 2 is transported and built in the installation place.

  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 the first aspect of the present invention, in the column connecting member 5 that connects the column lower portion 2S fixed to the slope S as the installation location and the column upper portion 2U connected to the upper portion of the column lower portion 2S. Since the one side receiving tube portion 5U for inserting the lower end of the support column upper portion 2U on one side and the other side receiving tube portion 5S for inserting the upper portion of the support column lower portion 2S on the other side, the support column is provided on the other side receiving tube portion 5S. The upper end of the lower part 2S is inserted, and the lower end of the upper part 2U is inserted into the one-side receiving cylinder part 5U, and the lower part 2S is inserted into the inclined surface S and fixed, so that the post 2 of the protective fence 1 as the protective body Can be erected. Therefore, the long column 2 can be transported and carried in divided into the column lower part 2S and the column upper part 2U, and the installation workability at the site can be improved. Further, in the case where the steel pipe K of the support 2 is plated, the support upper part 2U and the support lower part 2S are shorter than the integrated body, so that the plating process can be easily performed.

  Thus, even if it is the elongate support | pillar 2, since it can convey and carry in into the support | pillar upper part 2U and the support | pillar lower part 2S separately, conveyance cost can be reduced. Further, since the plating process can be performed separately for the support upper part 2U and the support lower part 2S, it is possible to manufacture an extremely long support. In addition, by dividing the support upper portion 2U and the support lower portion 2S, the support upper portion 2U can be standardized and manufactured in advance.

  In this way, in this embodiment, corresponding to claim 2, the end portions of the support columns 2 can be smoothly inserted into the receiving tube portions 5U and 5S by the rib inner surfaces 57N as a plurality of guide surfaces.

  Thus, in this embodiment, corresponding to claim 3, in the support connecting structure using the support connecting tool 5 of claim 1, the upper end of the support lower part 2S is inserted into the other-side receiving cylinder part 5S, and The lower end of the support upper part 2U is inserted into the one-side receiving cylinder part 5U, and the filler 75 is filled between the other-side receiving cylinder part 5S and the upper end of the lower support part 2S, and the one-side receiving cylinder part 5U and the upper support part 2U. Since the filling material 75 is filled between the lower ends of the columns, the support column 2 can be integrated and erected.

  Thus, in this embodiment, corresponding to claim 4, using the support coupler of claim 1, the upper end of the support lower part 2S is inserted into the other-side receiving cylinder part 5S, and the one-side receiving cylinder part 5U is inserted. The lower end of the support upper part 2U is inserted, and the filler 75 is filled between the other side receiving cylinder part 5S and the upper end of the support lower part 2S, and between the one side receiving cylinder part 5U and the lower end of the support upper part 2U. After the material 75 is filled, the lower part of the support column 2 is attached to the installation location, so that the support column upper part 2U and the support column lower part 2S are respectively manufactured, and then the support column connection part 5 is connected to the support column upper part 2U and the support column lower part 2S at a predetermined location. Connect and integrate. If the predetermined place is a pillar manufacturing factory, the pillar 2 with excellent dimensional accuracy can be obtained. On the other hand, if the predetermined place is the installation place, the installation place with the support upper part 2U and the support lower part 2S divided. Therefore, it is easy to transport and carry to the installation location.

  Further, as an effect on the embodiment, since the longitudinal reinforcing rib portions 58 and 58A are provided on the outer circumferences of the one side and the other side receiving tube portions 5U and 5S, the cross-sectional performance against the bending moment can be improved, and the column upper portion 2U can be improved. It is possible to effectively counter the moment of the connecting portion generated by the applied load. Furthermore, using the support | pillar coupling tool of Claim 1, while inserting the upper end of the support | pillar lower part 2S in the other side receiving cylinder part 5S, inserting the lower end of the support | pillar upper part 2U in the one side receiving cylinder part 5U, the other side receiving cylinder part A column connecting method in which a filler 75 is filled between 5S and the upper end of the column lower part 2S, and a filler 75 is filled between the one-side receiving cylinder part 5U and the lower end of the column upper part 2U. Since the lower column 2S is attached to the sloping slope S and the upper end of the lower column 2S is inserted into the other side receiving cylinder 5S, the lower end of the upper column 2U is inserted into the first receiving cylinder 5U. By performing on-site construction to be fixed to the slope S and on-site construction on the upper part of the protective fence 1 including the support upper part 2U, the workability associated with the installation work can be improved. Further, since the steel pipe K of the support upper part 2U is plated, the support upper part 2U and the support lower part 2S are shorter than the integrated body, so that the plating process can be easily performed.

  Furthermore, as an effect of the embodiment, since the support coupler 5 is made of cast metal, it is possible to manufacture the coupler 5 having a complicated shape. Further, since the support surface 5 is provided with the rib inner surface 57N as a guide surface and the inner flange 61 for abutting against the end of the support 2, the connection work of the support 2U and the support 2S by the support 5 is performed. Becomes easy. Furthermore, since the reinforcing rib portions 58 and 58A in the length direction are provided in the vicinity of the central portion of the outer periphery of the column coupler 5, the cross-sectional performance against the bending moment can be improved. In addition, by using a high fluidity non-shrink mortar as the filler 75, the filling property is improved, and at the time of filling, the air can be smoothly drawn out by the air vent hole 59, and the air vent hole 59 is used. Thus, the filling state of the filler 75 can be confirmed. Furthermore, since the centered stepped portion 53D and the tip stepped portion 57D are provided in the receiving tube portions 5U and 5S, the adhesion between the receiving tube portions 5U and 5S and the filler 75 can be improved. Extraction of the filler 75 can be regulated by the direction step portion 53D and the tip step portion 57D, and the support column connector 5, the support column upper portion 2U, and the support column lower portion 2S can be integrated.

  FIG. 9 shows a second embodiment of the present invention. The same reference numerals are given to the same portions as those of the first embodiment, and detailed description thereof will be omitted. In this example, the upper portion 2U of the column with respect to the column coupling 5 is shown. And the attachment adjustment method of 2 S of support | pillar lower parts is demonstrated.

  As shown in the figure, for example, in the one-side receiving tube portion 5U, the adjustment member 74 is screwed into the end female screw hole 56 on the upper end side and the central female screw hole 56A on the central side, respectively. When the adjustment member 74 is screwed, the support upper part 2U is slightly tilted in the screwing direction, while when the center adjustment member 74 is screwed in, the support upper part 2U is slightly tilted in the direction opposite to the screwing direction. The orientation of the upper column 2U can be adjusted by the adjusting member 74.

  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, in the embodiment, an example is shown in which a support is built on a natural ground such as a slope, but a support may be built on an installation surface provided with a foundation such as concrete.

It is sectional drawing of the use condition of the support | pillar coupling tool which shows Example 1 of this invention. It is a front view of the protection body which made the cross section a part same as the above. It is sectional drawing of a support | pillar coupling tool same as the above. FIG. 4 is a cross-sectional view taken along line AA in FIG. It is a BB sectional drawing of FIG. 3 same as the above. FIG. 3 is an enlarged front view of the check valve. It is an expanded sectional view of a support | pillar connection part edge part same as the above. It is sectional drawing of the principal part of a support | pillar coupling tool same as the above. It is sectional drawing of the principal part of the support | pillar coupling tool which shows Example 2 of this invention.

Explanation of symbols

Protective fence (protective body) such as 1 avalanche rock
2 Column 2U Column Upper 2S Column Lower 5 Column Support 5U One Side Cylinder 5S Other Side Cylinder 6 Center
75 Filler
81 Mounting hole S Installation location K Steel pipe J Filling material

Claims (4)

In a strut coupler that connects a lower strut fixed to the foundation and a strut upper connected to the upper portion of the lower strut, one side receiving tube portion that inserts the lower end of the upper portion of the strut on one side and the strut on the other side A support column connector for a protective body such as avalanche and falling rock, comprising an other side receiving tube portion into which an upper portion of the lower portion is inserted. 2. The support pillar connector for an avalanche / falling rock protection body according to claim 1, wherein a plurality of guide surfaces located inside the inner peripheral surface are provided on the inner peripheral surface of the one-side and other-side receiving tube portions. . The strut connection structure using the strut connector according to claim 1, wherein an upper end of the lower portion of the strut is inserted into the other-side receiving tube portion, and a lower end of the upper portion of the strut is inserted into the one-side receiving tube portion. An avalanche characterized by being filled with a filler between a side receiving cylinder part and the upper end of the lower part of the column, and with a filler between the one side receiving cylinder part and the lower end of the upper part of the column. -Support structure for protective bodies such as rock fall. The column connecting tool according to claim 1, wherein an upper end of the lower column is inserted into the other side tube portion, a lower end of the upper column is inserted into the one side tube portion, and the other side tube portion and The filler is filled between the upper end of the lower column and the filler is filled between the one-side receiving tube part and the lower end of the upper column, and then the lower part of the column is attached to the installation place. A strut connection method for protective bodies such as avalanche and falling rock.

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