JP2018135678A - Support column installation structure and guard fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guard fence which is light weight, capable of mitigating impact during a vehicle collision, and having the necessary load bearing capability for vehicle impacts, and to provide a support column installation structure appropriate for said guard fence.SOLUTION: A support column installation structure of the present invention is composed of a structure in which a buried portion of a support column is inserted into an underground pipe buried in a recess of a concrete floor slab, and a gap-filler is filled in a space between the support column and the underground pipe. A structure in which a base member having a standing pipe is fixed to the concrete floor slab, the buried portion of the support column is inserted into the standing pipe, and a gap-filler is filled in a space between the support column and the standing pipe is also possible. The hardness of the gap-filler is lower than the hardness of the concrete made concrete floor slab. For a guard fence of the present invention, a plurality of the support columns provided with the support column installation structure are installed in a bridge axial direction, and the support columns are connected with one or more horizontal tie members. For balustrade bodies, connecting via joint parts respectively installed on the balustrade bodies is also possible.SELECTED DRAWING: Figure 1

Description

  The present invention is, for example, a concrete wall rail installed on the side in the width direction (outside the shoulder) of a highway, a high-speed railway, a viaduct, a general bridge, etc. (hereinafter referred to as “bridge”), or according to the traveling direction of the bridge. The present invention relates to a support installation structure (support installation structure) used for various protection fences such as a guard cable installed in a separation part such as a central separation band to be separated, and a protection fence to which the support installation structure is applied.

  At both ends in the width direction of the bridge, rails (wall rails) are installed along the bridge axis direction to prevent the vehicle from falling or departing. Conventionally, as a method for constructing a wall rail, a method of placing concrete around a reinforcing bar placed on a concrete slab or steel slab with a formwork and placing concrete in the formwork (so-called on-site casting) is generally used. It was the target. However, there is a problem that the construction period is prolonged because it takes time to place reinforcing bars (bar arrangement), formwork, concrete placement, and concrete curing.

  In order to solve this problem, in recent years, a precast method has been proposed in which a precast concrete wall rail produced in advance in a factory is transported to the site for construction. According to the precast method, the amount of concrete to be cast on site can be minimized, so that the construction can be accelerated.

  However, precast concrete is very heavy and has a heavy load on the bridge, which makes it difficult to transport and install. In order to solve this problem, the applicant of the present application has proposed a method for constructing a wall rail having a hollow inside (Patent Document 1) prior to the present application.

  Various proposals have been made on the wall rails in addition to the applicant's proposal (Patent Documents 2 and 3). Patent Document 2 provides a method capable of efficiently and easily replacing a wall rail, and Patent Document 3 describes a concrete wall rail and road that can alleviate the impact of a road surface and the impact of a vehicle at the time of a collision. A side wall is provided.

  In addition, a guard cable for preventing the traveling vehicle from jumping out to the opposite lane is disposed at the separation portion of the bridge. As the guard cable, for example, one in which a column (square steel pipe) is inserted into a sheath pipe buried in the ground so as to be inserted and removed is proposed (Patent Documents 4 and 5).

JP2015-178710A JP2013-36205A JP-A-9-296414 Japanese Patent No. 5439229 Japanese Patent No. 5439230

  The wall rail described in Patent Document 1 is excellent in terms of weight reduction, but there is room for improvement in terms of resistance (load resistance) at the time of collision. On the other hand, the wall rails described in Patent Documents 2 and 3 are excellent in terms of load bearing capacity at the time of collision, but have a large amount of concrete and there is room for improvement in terms of weight reduction.

  Since the guard cables of Patent Documents 4 and 5 are not fixed because the column is inserted into the sheath tube, the impact at the time of the vehicle collision is easier to alleviate than when the column is fixed. There is room for improvement in terms of load bearing capacity.

  The problem to be solved by the present invention is that it is lighter than a conventional guard fence, can reduce the impact at the time of a vehicle collision, and has a strut installation structure that contributes to the realization of a guard fence having a load resistance required for a vehicle collision; An object of the present invention is to provide a protective fence to which the support installation structure is applied.

[Stand installation structure]
The support installation structure of the present invention is an installation structure of a support used for a protective fence, wherein the support is a steel pipe, a concrete floor slab for installing the support is provided with a recess, an embedded pipe is embedded in the recess, and the embedded A buried portion of the column is inserted into a pipe, and a filling material having a strength lower than that of a concrete floor slab is filled between the column and the buried pipe, and the column is interposed between the column and the buried pipe. It is the structure supported by the filling material with which it filled. Here, the buried pipe refers to a hollow pipe provided below the floor slab surface and having an axial direction substantially perpendicular to the floor slab or road surface. In this case, an opening for introducing a filling material is provided in the buried portion of the column, the filling material is also filled in the buried portion of the column, and the filling material is filled between the column and the buried pipe. And it can also be set as the structure supported by the filling material with which the inside of the said support | pillar was filled. The cross-sectional shape of the column and the buried pipe may be circular, rectangular or square. In addition, when the head stud is welded to the outside of the support so that it is synthesized with the filling material, or when the filling material is filled inside the support, the effect of combining the support and the filling material is enhanced. An opening is also provided in the column in consideration of the filling of the interlining material. In addition, mortar, concrete, etc. can be used for the filling material. Here, the concrete floor slab also includes a portion that is generally called a ground cover and is higher than the road surface outside the road shoulder.

  The support installation structure of the present invention is an installation structure of a support used for a protective fence, the support is a steel pipe, a base member provided with a standing pipe is fixed to a concrete slab in which the support is installed, and the base member A buried portion of the support column is inserted into the standing pipe, and a filling material having a strength lower than that of a concrete floor slab is filled between the support column and the standing pipe, and the support column is installed in the standing pipe. The structure is supported by a filling material filled between the pipes. Here, the standing pipe refers to a hollow pipe provided above the floor slab surface and having an axial direction substantially perpendicular to the floor slab or road surface. In this case, an opening for introducing a filling material is provided in the buried portion of the column, the filling material is filled in the buried portion of the column, and the column is filled between the column and the standing pipe. It can also be set as the structure supported by the filling material and the filling material with which the inside of the said support | pillar was filled. The cross-sectional shape of the column and the standing pipe may be circular, rectangular or square. In addition, when the head stud is welded to the outside so that it is synthesized with the interlining material, or when the interlining material is filled with the interlining material, the combined effect of the prop and the interlining material is enhanced. Openings that take into account the filling of the aggregate of the filling material are provided in the support columns.

  In any of the above-mentioned strut installation structures, toughness can be enhanced by reinforcing short fibers in the filling material.

  The column installation structure of the present invention is a column installation structure used for a protective fence, in which an anchor bolt is installed on a concrete floor slab, and a spacer is fixed to the anchor bolt, or arranged on the concrete floor slab, A plate-supported column in which a column member made of steel pipe is erected on the plate is disposed on the spacer, the plate of the plate-supported column is fixed to the concrete floor slab by fixing means, and the concrete floor slab and the plate are interposed by interposing the spacer It is also possible to adopt a structure in which a gap material is filled with a filling material. As the spacer, a liner plate or a nut can be used.

[Protective fence]
The protective fence of the present invention is a protective fence installed on the side in the width direction of the bridge or on the separation part, and a plurality of columns having any one of the above-mentioned column installation structures are provided at intervals in the bridge axis direction. The plurality of struts are connected by one or more horizontal connecting members.

  The protective fence of the present invention is a protective fence installed on the lateral side of the bridge or in a separation part, and two or more handrail bodies are arranged on the concrete floor slab of the bridge along the bridge axis direction of the bridge. The balustrade body includes one or more struts and a concrete balustrade formed of reinforced concrete or fiber reinforced concrete, and the struts are embedded and fixed in the concrete balustrade so as to be integrated with the concrete balustrade. The two or more balustrade bodies are connected by one or more horizontal connecting members that are inserted into the concrete balustrade, and the struts of the two or more balustrade bodies have a concrete floor in any one of the strut installation structures. It is fixed to the concrete floor slab by being installed on the plate.

  The protective fence of the present invention is a protective fence installed on the lateral side of the bridge or in a separation part, and two or more handrail bodies are arranged on the concrete floor slab of the bridge along the bridge axis direction of the bridge. The balustrade body includes one or more struts, a concrete balustrade portion formed of reinforced concrete or fiber reinforced concrete, and a joint portion used for connecting the adjacent balustrade body, and the struts are integrated with the concrete balustrade portion. Embedded in and fixed to the concrete balustrade part, and the two or more balustrade bodies are arranged so that the joint parts overlap or are close to each other, and in the axial direction of the joint part in the vicinity of the joint parts Auxiliary steel material is disposed so as to be substantially orthogonal to the bottom surface of the auxiliary steel material, and the lower end side of the auxiliary steel material is fixed by being embedded in the concrete floor slab. The space between the adjacent railings of the main rail body and the auxiliary steel material is filled with a filling material, and the pillars of the two or more railing bodies have a concrete floor with any of the above-mentioned pillar installation structures. It is fixed to the concrete floor slab by being installed on the plate.

[Effects of support installation structure]
The support installation structure of the present invention has the following effects.
(1) Since the filling material is filled between the buried pipe and the column or between the standing tube and the column, when used as a column of the protective fence, a necessary load resistance can be ensured.
(2) In addition to the filling material between the buried pipe and the column or between the standing pipe and the column, when the filling material is also filled in the column, the column is supported from both outside and inside. Therefore, it is possible to make a protective fence having a higher load resistance than when supporting only by the outer padding material.
(3) Since the strength of the padding material is lower than the strength of the concrete slab, when external force is applied to the column, energy is absorbed by the padding material between the buried pipe or the standing pipe and the column and buried It can prevent damage to concrete around the pipe. As a result, when the protective fence is damaged, the concrete around the buried pipe can be used again only by removing the filling material inside the buried pipe or the standing pipe. Moreover, if short fiber reinforcement is performed on the filling material, energy absorption by the filling material is further increased.
(4) In the case where the interlining material is not filled with the interlining material, when the external force is applied to the support column, the support column is deformed so that energy is absorbed and the concrete can be prevented from being damaged. As a result, when the protective fence is damaged, the concrete can be used again only by removing only the filling material between the buried pipe or the standing pipe and the column.
(5) When a spacer is interposed between the concrete floor slab and the support column with a plate, and a gap is generated by interposing the spacer, the spacer is set at a predetermined position. Just by placing it, you can easily adjust the height of the column.

[Effect of protective fence]
The protective fence of the present invention has the following effects.
(1) Since the support is a steel pipe, it is lighter than when a solid steel material is used as the support.
(2) By using a steel pipe as a support, it is possible to ensure the load bearing capacity necessary for the protective fence.
(3) By using a steel pipe as a support, the horizontal connecting material can be easily fixed, and the effect of lateral distribution is enhanced. In other words, a large-scale surface can be resisted at the time of a vehicle collision.
(4) Since buried pipes and standing pipes are used, the alignment of the struts can be completed at once, which contributes to rapid construction.
(5) Since there is a sufficient gap for absorbing errors between the buried pipe or the standing pipe and the column, alignment can be easily performed.
(6) Since the strength of the padding material is lower than that of the concrete floor slab, energy is absorbed by the padding material between the buried pipe or the standing pipe and the support column when the vehicle collides with the protective fence. Can prevent damage to concrete on the floor slab. As a result, when the protective fence is damaged, the floor slab concrete can be reused by removing only the filling material inside the buried pipe or the standing pipe.
(7) When the interlining material is not filled with the filling material, when the vehicle collides with the protective fence, the support is deformed so that energy is absorbed and the concrete around the buried pipe can be prevented from being damaged. As a result, when the protective fence is damaged, the concrete around the buried pipe can be used again only by removing the filling material between the buried pipe or the standing pipe and the column.
(8) Since the column having the column installation structure is used, the effects (1) to (5) of the column installation structure are achieved.

(A) is a front view which shows an example of the support | pillar installation structure using a buried pipe, (b) is the side view. (A) is a front view which shows the other example of the support | pillar installation structure using a buried pipe, (b) is the side view. (A) is a front view which shows an example of the support | pillar installation structure using a base member, (b) is a front view which shows the other example of the support | pillar installation structure using a base member. (A) is a front view which shows an example of the support | pillar installation structure using the support | pillar with an anchor plate, (b) is the side view. (A) is the front which shows the other example of the support | pillar installation structure using the support | pillar with an anchor plate, (b) is the side view. (A) is a side view which shows an example of the protection fence of this invention, (b) is BB sectional drawing of (a), (c) is CC sectional drawing of (a). (A) is a side view which shows an example of the protection fence of this invention, (b) is BB sectional drawing of (a), (c) is CC sectional drawing of (a). (A) is a side view which shows an example of the protection fence of this invention, (b) is BB sectional drawing of (a), (c) is CC sectional drawing of (a). (A) is a side view which shows an example of the protection fence of this invention, (b) is BB sectional drawing of (a), (c) is CC sectional drawing of (a). (A) is a side view which shows an example of the protection fence of this invention, (b) is BB sectional drawing of (a). (A) is a side view which shows an example of the protection fence of this invention, (b) is BB sectional drawing of (a). (A) is a side view showing an example of the protective fence of the present invention, (b) is a sectional view taken along the line BB in (a), (c) is a plan view of the column with anchor plates in (a), and (d) is The perspective explanatory drawing of (a). (A) is a side view showing an example of the protective fence of the present invention, (b) is a cross-sectional view taken along line BB of (a), (c) is a cross-sectional view of a joint part of (a), and (d) is (a). The top view of the support | pillar with an anchor plate, (e) is explanatory drawing which shows the other example of the round enclosure part of (a). (A) is a side view showing an example of the protective fence of the present invention, (b) is a cross-sectional view taken along line BB of (a), (c) is a cross-sectional view of a joint part of (a), and (d) is (a). The top view of the support | pillar with an anchor plate, (e) is explanatory drawing which shows the other example of the round enclosure part of (a).

(Embodiment 1 of the column installation structure)
1st embodiment of the support | pillar installation structure of this invention is described with reference to Fig.1 (a) (b). This embodiment is an example of a case where a protective fence post 10 installed on a bridge is installed on a concrete floor slab C using an embedded pipe 16.

  1 (a) and 1 (b), C is a concrete floor slab, H is a recess formed in the concrete floor slab C, 10 is a column, 11 is a padding material, 13 is a headed stud (detent), 14 is A horizontal tether, 15 is an insertion hole, and 16 is a buried pipe.

  The buried pipe 16 is a member for inserting the column 10 and is buried and fixed in a recess H formed in the concrete floor slab C. Various steel pipes such as round steel pipes and square steel pipes can be used as the buried pipe 16. The buried pipe 16 shown in FIGS. 1 (a) and 1 (b) has an insertion port for inserting the support column 10 in the upper part. The buried pipe 16 can be a bottomed pipe or a pipe without a bottom. A headed stud 13 is provided on the outer periphery of the buried pipe 16. The headed stud 13 can be provided on both the inside and the outside of the buried pipe 16, or can be provided only on the inside. The buried pipe 16 has an inner diameter larger than the outer shape of the support column 10, specifically, there is a sufficient gap for error absorption with the inserted support column 10, and the aggregate used for the filling material 11 is sufficient. It is preferable to use one having an inner diameter that is sufficient to reach the maximum.

  The column 10 is a column for a protective fence such as a concrete wall rail or a guard cable. Various steel pipes such as a round steel pipe and a square steel pipe can be used for the support. In this embodiment, a square steel pipe is used as the support column 10. A headed stud 13 is provided on the outer surface of the embedded portion 10 a of the column 10. The headed stud 13 can be omitted. An insertion hole 15 for inserting a horizontal connecting material (for example, a cable or a reinforcing bar) 14 used for connection to another support 10 is provided above the support 10. The insertion hole 15 is a set of an inlet 15a and an outlet 15b. In this embodiment, one set of insertion holes 15 is provided above the support column 10, but two or more sets of insertion holes 15 may be provided. In some cases, it can be omitted.

  As the interlining material 11, mortar, concrete, or the like can be used. As the filling material 11, a material having lower strength than the concrete floor slab C can be used. By using a material having a lower strength than the concrete floor slab C as the padding material 11, it is possible to prevent the concrete floor slab C itself from being damaged by the shock of the padding material 11 when the vehicle collides. As the filling material 11, a material having the same strength as the concrete floor slab C or higher strength than the concrete floor slab C can be used. Moreover, in order to increase the energy absorption at the time of a collision, the stuffing material 11 can use the mortar etc. which were reinforced with the short fiber rich in toughness.

  As shown in FIGS. 1A and 1B, the column installation structure of this embodiment has a bottomed cylindrical embedded pipe 16 embedded and fixed in a recess H formed in a concrete floor slab C. The embedded portion 10 a of the column 10 is inserted into the column 10, and the column 10 is supported by the filling material 11 filled between the embedded tube 16 and the column 10. Further, the filling material 11 may be filled inside the buried portion 10 a in the buried pipe 16.

  The structure of “Embodiment 1 of the column installation structure” can be applied to both a flexible protective fence and a rigid protective fence, but is a particularly preferable structure as the structure of the rigid protective fence. For example, it is suitable for adopting as a structure of a column of a concrete wall railing.

(Embodiment 2 of the column installation structure)
2nd embodiment of the support | pillar installation structure of this invention is described with reference to Fig.2 (a) (b). The basic configuration of the column installation structure of this embodiment is the same as that of the “embodiment 1 of column installation structure”. The differences are that the opening 12 is provided in the embedded portion 10a of the support column 10, the headed stud 13 of the embedded portion 10a is omitted, and the interior of the support column 10 is always filled with the filling material 11. It is. In the following, description of points already described will be omitted, and the remaining points will be described.

  In the example shown in FIGS. 2A and 2B, three openings 12 are provided on the front surface and the back surface of the embedded portion 10a of the support column 10, and six openings 12 are provided on both side surfaces. The filling material 11 filled between the support column 10 and the buried pipe 16 passes through the opening 12 and enters the support column 10. As a result, the column 10 of this embodiment is supported by the filling material 11 filled between the inner wall of the buried pipe 16 and the column 10 and the filling material 11 filled in the column 10. Filling the inside of the column 10 with the interstitial material 11 increases the resistance to bending and tensile force acting on the column 10. In addition, by providing the opening 12, not only the introduction of the filling material 11 into the support column 10 but also the penetration of the filling material 11 through the opening 12 prevents the support 10 and the filling material 11 from shifting, and the composite effect increases. .

  In addition, although illustration is abbreviate | omitted, while providing the opening 12 in the embedding part 10a of the support | pillar 10, the stud 13 with a head can also be provided. In this case, the integration between the support column 10 and the filling material 11 becomes stronger. When the headed stud 13 is provided, the buried pipe 16 is a steel pipe having a thickness that can accommodate both the column 10 and the headed stud 13. When the opening 12 is provided instead of the headed stud 13, the buried pipe 16 that is thinner than the case where the headed stud 13 is provided can be used, and the structure becomes compact.

  Similar to the “embodiment 1 of the strut installation structure”, the structure of the “embodiment 2 of the strut installation structure” can be applied to both the flexible protection fence and the rigid protection fence. Is a particularly preferred structure. For example, it is suitable for adopting as a structure of a column of a concrete wall railing.

(Embodiment 3 of the column installation structure)
3rd embodiment of the support | pillar installation structure of this invention is described with reference to Fig.3 (a) (b). This embodiment is an example of a case where a protective fence post 20 installed on a bridge or the like is installed on a concrete floor slab C using a base member 26.

  3 (a) and 3 (b), C is a concrete floor slab, 20 is a column, 21 is a filling material, 22 is an opening, 23 is a headed stud (detent), 24 is a horizontal connecting material, and 25 is an insertion hole. , 26 is a base member, and 27 is a fixing means. The fixing means 27 of this embodiment includes an insert 27a and an anchor bolt 27b. The insert 27a is often used with a screw cut inside. Although not shown here, an anchor bolt having a diameter larger than that of the anchor bolt is drilled in some cases, an anchor bolt is installed, and a filling material such as an adhesive or mortar is put in the hole to fix the anchor bolt. Bolts may be fixed.

  The column 20 is a column for a protective fence such as a concrete wall rail or a guard rail. Various steel pipes such as a round steel pipe and a square steel pipe can be used for the support 20. In this embodiment, a round steel pipe is used. In the example of FIG. 3A, a headed stud 23 is provided on the outer surface of the embedded portion 20 a of the support column 20. The headed stud 23 can be omitted. An opening 22 as shown in FIG. 3B can also be provided in the embedded portion 20 a of the support column 20. The opening 22 can be provided instead of the headed stud 23 or together with the headed stud 23. When the opening 22 is provided in place of the headed stud 23, the standing pipe 26b that is thinner than the case where the headed stud 23 is provided can be used, so the structure becomes compact.

  The support column 20 is provided with an insertion hole 25 through which a horizontal connecting material (for example, a cable, a reinforcing bar, etc.) 24 used for connection with another support column 20 is inserted. As in “Embodiment 1 of the column installation structure”, the insertion hole 25 is a set of an inlet 25a and an outlet 25b (see FIG. 10B and FIG. 11B). In this embodiment, five sets of insertion holes 25 are provided at intervals in the height direction of the support columns 20, but the number of insertion holes 25 may be more or less than five sets.

  The base member 26 includes a base plate 26a and a standing pipe 26b. The standing pipe 26b is welded so as to be positioned at the center of the base plate 26a. The buried pipe 26 has an inner diameter larger than the outer shape of the support column 20, specifically, there is a gap for sufficient error absorption with the inserted support column 20, and the aggregate used for the filling material 21 is sufficient. It is preferable to use one having an inner diameter that is sufficient to reach the maximum.

  Four steel ribs 26c (two of which are shown in FIGS. 3A and 3B) are provided on the outside of the standing pipe 26b of the base plate 26a. The steel rib 26c is welded to the base plate 26a and the standing pipe 26b. There may be more or less than four steel ribs 26c. An upper side of an anchor bolt 27b screwed into an insert 27a having a female screw is inserted through an insertion hole (not shown) of the base plate 26a. The anchor bolt 27b is provided with a bolt, and the base member 26 is fixed on the concrete floor slab C by fastening the bolt directly to the base plate 26a or via a washer (not shown).

  As the interlining material 21, mortar, concrete, or the like can be used. As the padding material 21, a material having a lower strength than the concrete floor slab C can be used. By using a material whose strength is lower than that of the concrete floor slab C as the padding material 21, it is possible to prevent the concrete floor slab C itself from being damaged by the shock of the padding material 21 when the vehicle collides. As the filling material 21, a material having the same strength as the concrete floor slab C or higher strength than the concrete floor slab C can be used. In addition, if short fibers are mixed in the filling material 21, energy consumption can be increased when the support column 20 is deformed, and the impact can be absorbed more.

  As a result of the filling material 21 being filled between the standing pipe 26b and the support column 20, in the example shown in FIG. 3A, the base member 26 is fixed to the concrete floor slab C by the fixing means 27. The embedded portion 20a of the column 20 (the portion that fits in the column 26b) is inserted into the standing tube 26b, and the column 20 is supported by the filling material 21 filled between the standing tube 26b and the column 20. It becomes a structure.

  In the example shown in FIG. 3B, the filling material 21 filled between the standing pipe 26 b and the column 20 passes through the opening 22 and enters the column 20. As a result, in the example shown in FIG. 3B, the base member 26 is fixed to the concrete floor slab C by the fixing means 27, and the embedded portion 20a of the column 20 is inserted into the standing pipe 26b of the base member 26. The strut 20 is supported by the filling material 21 filled between the upright pipe 26 b and the strut 20 and in the strut 20. Filling the inside of the support column 20 with the interstitial material 21 increases the resistance to bending and tensile force acting on the support column 20. Further, by providing the opening 22, not only the introduction of the interlining material 21 into the support column 20 but also the synthesizing effect of the prop 20 and the interlining material 21 is enhanced when the interlining material 21 penetrates the opening 22.

  Although the structure of “Embodiment 3 of the column installation structure” can be applied to a flexible protective fence or a rigid protective fence, it can be particularly suitably used as the structure of the flexible protective fence. For example, it is suitable for adopting as a structure of a guard cable support using a cable.

(Embodiment 4 of the column installation structure)
4th Embodiment of the support | pillar installation structure of this invention is described with reference to FIG. 4 (a) (b) and FIG. 5 (a) (b). This embodiment is an example of a case where a protective fence post installed on a bridge or the like is provided with a plate (anchor plate) and the support plate with the anchor plate is installed on a concrete floor slab C.

  4 (a) (b) and 5 (a) (b), C is a concrete floor slab, 30 is a column with an anchor plate (plate column), 34 is a horizontal connecting material, 35 is an insertion hole, 37 is Fixing means, 38 is a filling material, and 39 is a spacer. In this embodiment, the column 30 with anchor plate is fixed to the concrete floor slab C by the fixing means 37. The fixing means 37 of this embodiment is composed of anchor bolts 37a and nuts 37b.

  The anchor plate-equipped support column 30 includes an anchor plate 30a and a support column (hereinafter referred to as a “support member”) 30b. The anchor plate 30a of this embodiment is a flat plate having a rectangular shape in plan view, and a column member 30b is erected at a position near one end in the longitudinal direction (FIGS. 12C, 13D, and 14). d)). Various steel pipes such as a round steel pipe and a square steel pipe can be used for the support member 30b. In this embodiment, a square steel pipe is used.

  The column member 30b is provided with an insertion hole 35 for inserting a horizontal connecting material (for example, a cable or a reinforcing bar) 34 used for connection to the other column member 30b. The insertion hole 35 is a set of an inlet 35a and an outlet 35b. In this embodiment, one set of insertion holes 35 is provided above the column member 30b, but two or more sets of insertion holes 35 may be provided.

  One steel rib 30c is provided on the upper surface side of the anchor plate 30a and outside the support member 30b. The anchor plate 30a and the column member 30b are joined by welding. The steel rib 30c is welded to both the anchor plate 30a and the support member 30b. Two or more steel ribs 30c may be provided (see FIGS. 13D and 14D). The upper side of the anchor bolt 37a embedded in the concrete floor slab C is inserted into the insertion holes provided near the four corners of the anchor plate 30a, and the nut 37b is screwed into a portion protruding upward from the anchor plate 30a. is there.

  When there is corrosion or damage on the surface of the concrete floor slab C (hereinafter collectively referred to as “non-land”), or when a space of about 30 mm is provided so that a filling material such as mortar can be easily filled. 4 (a) (b) and FIGS. 5 (a) and 5 (b), a concrete floor slab produced by providing a spacer 39 between the concrete floor slab C and the column 30 with an anchor plate and installing the spacer 39. Filling material 38 is filled in the space between C and the column 30 with anchor plate. For the spacer 39, for example, a liner plate 39a (for example, a mortar liner) as shown in FIGS. 4A and 4B or a positioning nut 39b as shown in FIGS. 5A and 5B is used. it can. Moreover, mortar, concrete, etc. can be used for the filling material 38.

  When the positioning nut 39b is used as the spacer 39, positioning (height determination) of the column 30 with anchor plate can be easily performed. Specifically, as shown in FIGS. 5 (a) and 5 (b), a positioning nut 39b is screwed onto an anchor bolt 37a erected on a concrete floor slab C, and an anchor is placed on the positioning nut 39b. By placing the support post 30 with the plate and rotating the positioning nut 39b, the support post 30 with the anchor plate can be moved up and down to adjust its height. When the positioning nut 39b is used as the spacer 39, it is not necessary to dispose the liner plate 39a below the anchor plate 30a. Therefore, the filling property of the interlining material 38 is improved as compared with the case where the liner plate 39a is disposed. Further, if the height is adjusted in advance with the positioning nut 39b before the support 30 with the anchor plate is arranged, it is only necessary to install the support 30 with the anchor plate on the top, which leads to rapid construction.

  Although the structure of “Embodiment 4 of the column installation structure” can be applied to both a flexible protective fence and a rigid protective fence, it can be particularly suitably used as the structure of the rigid protective fence.

(Embodiment 1 of the protective fence)
A first embodiment of a protective fence according to the present invention will be described with reference to FIGS. 6 (a) to 6 (c) to 9 (a) to 9 (c). In addition, the guard fence of the present invention is installed along the width direction of the bridge or at the separation part along the bridge axis direction so that the vehicle deviating from the lane is returned to the lane or the vehicle enters the opposite lane. In addition to rigid protective fences such as concrete wall railings, flexible protective fences such as guard cables are included.

  As an example, the protective fences shown in FIGS. 6 (a) to 6 (c) and FIGS. 7 (a) to (c) are the structures of the “embodiment 1 of the column installation structure” (FIGS. 1A and 1B). This is an example of a concrete wall rail (rigid protective fence) using the structure shown in FIG. 6 (a) to 6 (c) to 9 (a) to 9 (c), C is a concrete floor slab, H is a recess H formed in the concrete floor slab C, 10 is a column, 11 is a filling material, Reference numeral 12 is an opening, 13 is a headed stud (detent), 14 is a horizontal connecting material, 15 is an insertion hole, 16 is a buried pipe, and 40 is a balustrade body. In the following, description of points already described will be omitted, and the remaining points will be described.

  The concrete floor slab C shown in FIG. 6A includes a traveling surface C1 on which the vehicle travels and a hill portion C2 that is one step higher than the traveling surface C1. A buried pipe 16 is buried in the recess H of the hill part C2. The number and interval of the buried pipes 16 are determined according to the number of columns 10 installed and the interval between them. In this embodiment, in order to install the five struts 10 at intervals of 1000 mm, five embedded pipes 16 are embedded at intervals of 1000 mm. A height adjustment bolt 41 is erected upward in a portion of the hill portion C2 where the buried pipe 16 is not buried.

  The handrail body 40 is manufactured in a factory. As an example, the balustrade body 40 shown in FIGS. 6A to 6C includes two struts 10 and a concrete balustrade portion 45. The concrete balustrade 45 is formed of reinforced concrete, fiber reinforced concrete, or the like. Similar to the conventional concrete wall rail, the concrete rail 45 includes an outer wall surface 40a, a top surface 40b, an inner wall surface 40c, and an inclined surface 40d. An insert 42 is embedded in the bottom surface of the concrete balustrade portion 45 of the balustrade body 40 and can be screwed with a height adjusting bolt 41 erected on the hill portion C2 of the concrete floor slab C.

  A plurality of headed studs can be welded to the outer periphery of each support column 10 in order to enhance the integrity with the concrete balustrade section 45. The embedded portion 10 a of each column 10 protrudes below the bottom surface of the rail main body 40 and is inserted into the embedded pipe 16 embedded in the concave portion H of the concrete floor slab C. The filling material 11 is filled between the buried pipe 16 and the buried portion 10 a of the column 10, and the column 10 of the balustrade body 40 is supported by the filling material 11 between the buried tube 16 and the buried portion 10 a of the column 10. ing. FIG. 6A shows a state in which the three balustrade bodies 40 are arranged (the rightmost balustrade body 40 shows only half), but the actual number of balustrade bodies along the bridge axis direction at the actual site is shown. 40 is installed.

  The plurality of balustrade bodies 40 installed on the concrete floor slab C can be connected by one or more horizontal connecting members 14 (PC steel, cables, reinforcing bars, etc.). For example, as shown in FIGS. 6A to 6C, the horizontal connecting members 14 are provided in the concrete balustrades 45 of the respective balustrade main bodies 40, and the horizontal connecting members 14 are connected to mechanical joints such as couplers ( (Not shown). Alternatively, a sheath pipe (not shown) having an inner diameter through which the horizontal connecting material 14 can be inserted instead of the horizontal connecting material 14 is embedded in the concrete rail 45, the sheath pipes communicate with each other, and the horizontal pipe is connected to the inside of the sheath pipe. The plurality of balustrade bodies 40 can also be connected by inserting the material 14 and being tense. The balustrade bodies 40 can also be connected by methods other than these.

  The plurality of balustrade bodies 40 are connected to the concrete floor slab C by screwing the height adjustment bolts 41 erected on the hill section C2 and the inserts 42 of the balustrade body 40. A gap material 44 is filled in a gap formed between the railing main body 40 and the concrete floor slab C (the hill portion C2). For the filling material 44, mortar, concrete, or the like can be used. The filling material 44 has the same or similar strength as the filling material 11 filled between the concave portion H of the concrete floor slab C and the buried pipe 16, and the same or similar material as the concrete floor slab C. Can be used.

  In FIG. 6A, as an example, the case where the support columns 10 are installed at intervals of 1000 mm is shown, but the installation interval of the support columns 10 can be made wider or narrower than 1000 mm. 6 (a) shows a case where the insert 42 is provided on the rail main body 40 and the height adjusting bolt 41 is provided on the concrete floor slab C. On the contrary, The height adjusting bolt 41 may be provided, and the insert 42 may be provided on the concrete floor slab C. The concrete floor slab C and the balustrade body 40 can also be connected by a fixing means other than the height adjusting bolt 41 and the insert 42.

  The balustrade body 40 shown in FIGS. 6B and 6C is provided with an inner wall surface 40c and an inclined surface 40d on the inner surface side, but the balustrade body 40 is formed as shown in FIGS. 7B and 7C. Moreover, it can also be set as the shape provided only with the inner wall surface 40c in the inner surface side. In this case, as shown in FIGS. 7B and 7C, a surface (floor slab inclined surface) C3 corresponding to the inclined surface 40d may be provided on the inner surface side of the elevated platform C2. 7B and 7C, the embedded portion 10a of the support column 10 is longer than in the cases of FIGS. 6B and 6C, and the contact area between the embedded portion 10 and the padding material 11 is longer. Therefore, resistance to bending strength and tensile force acting on the column 10 is increased. 7 (a) to 7 (c), the concrete slab will not affect the PC steel material and reinforcing bar arrangement of the concrete floor slab C, and even if it receives a load that will collapse the column 10 by any chance. C is not damaged. The shape of the balustrade body 40 may be other than these, and the hill portion C <b> 2 can be appropriately changed according to the shape of the balustrade body 40. In addition, although illustration is abbreviate | omitted, what the reinforcing bar was arrange | positioned and reinforced can also be used for the balustrade main body 40. FIG.

  The concrete wall rail of this embodiment uses the structure of the “embodiment 1 of the column installation structure”, but instead of the structure of the embodiment 1 of the column installation structure, The structure of Embodiment 2 ”(the structure shown in FIGS. 2A and 2B) can also be used. In this case, as shown in FIGS. 8A to 8C and FIGS. 9A to 9C, the filling material 11 flows into the support column 10 from the opening 12 of the support column 10, and the support column 10 is embedded in the embedded pipe 16. This is supported by the filling material 11 filled between the inner wall and the column 10 and the filling material 11 filled in the column 10. Also in this case, the opening 12 can be provided in the embedded portion 10a of the support column 10, and the headed stud 13 can be provided. 9B and 9C, the embedded portion 10a of the support column 10 is longer than that in FIGS. 8B and 8C, and the embedded portion 10 and the filling material 11 Since the contact area is widened, bending resistance acting on the support column 10 and resistance to tensile force are increased.

(Embodiment 2 of the protective fence)
A second embodiment of the protective fence of the present invention will be described with reference to FIGS. 10 (a) and 10 (b) and FIGS. 11 (a) and 11 (b). This embodiment is an example in the case where the guard fence is a guard cable (flexible guard fence) using the structure (structure shown in FIGS. 3 (a) and 3 (b)) of the “third embodiment of the column installation structure”. . 10 (a) (b) and 11 (a) (b), C is concrete, 20 is a column, 21 is a filling material, 22 is an opening, 23 is a headed stud (detent), and 24 horizontal joints. Reference numeral 25 denotes an insertion hole, 26 denotes a base member, and 27 denotes a fixing means. In the following, description of items already described will be omitted, and the remaining points will be described.

  In this embodiment, three struts 20 are installed at an interval of 3000 mm, and these three struts 20 are connected by five horizontal connecting members (PC steel, cables, reinforcing bars, etc.). 10 (a) (b) and FIG. 11 (a) (b) show only three support columns 20, but the actual number of support columns 20 are installed along the bridge axis direction at the actual site. 20 are connected by a horizontal connecting member 24. The installation interval of the columns 20 can be made wider or narrower than 3000 mm. There may be more or less than five horizontal connecting members 24.

(Embodiment 3 of the protective fence)
A third embodiment of the protective fence of the present invention will be described with reference to FIGS. In this embodiment, the guard fence is a concrete wall rail (stiffness using the structure shown in FIGS. 4A and 4B and FIGS. 5A and 5B) of the “embodiment 4 of the column installation structure”. This is an example of a protective fence). 12 (a) to 12 (d), C is a concrete floor slab, 30 is a column with an anchor plate, 34 is a horizontal connecting material, 35 is an insertion hole, 37 is a fixing means, and 50 is a balustrade body. In the following, description of the matters already described will be omitted, and the rest will be described.

  In the concrete floor slab C shown in FIG. 12A, a plurality of anchor bolts 37a are provided at intervals in the bridge axis direction. In this embodiment, anchor bolts 37 are provided in accordance with the positions of the insertion holes of the anchor plate 30a in order to install the pillars 30 with the anchor plate at 1000 mm intervals.

  The handrail main body 50 is manufactured in a factory. As an example, the handrail main body 50 shown in FIGS. 12A to 12D includes two anchor plate-equipped columns 30 and a concrete handrail portion 55. The concrete balustrade 55 is formed of reinforced concrete, fiber reinforced concrete, or the like. Similar to a conventional concrete wall rail, the concrete rail 55 includes an outer wall surface 50a, a top surface 50b, an inner wall surface 50c, and an inclined surface 50d. Two concave portions 51 are provided on the outer wall surface 50a and the inclined surface 50d of the concrete rail 55.

  A plurality of studs with heads can be welded to the outer periphery of each column member 30b in order to enhance the integrity with the concrete rail 55. The anchor plate 30 a of each column 30 with anchor plates protrudes below the bottom surface of the concrete rail 55 and is fixed to the concrete floor slab C by the fixing means 37. 12 (a) and 12 (d) show a state in which the four balustrade bodies 50 are arranged (only half of the balustrade bodies 50 at the left end and right end are shown), but in the actual site, along the bridge axis direction. A required number of balustrade bodies 50 are installed.

  The plurality of balustrade bodies 50 installed on the concrete floor slab C can be connected by one or more horizontal connecting materials (PC steel, cables, reinforcing bars, etc.). For example, as shown in FIGS. 12A to 12D, the horizontal connecting members 34 are provided in the concrete balustrades 55 of the respective balustrade main bodies 50, and the horizontal connecting members 34 are connected to a mechanical joint (such as a coupler). (Not shown). Alternatively, a sheath pipe (not shown) having an inner diameter through which the horizontal connecting material 34 can be inserted instead of the horizontal connecting material 34 is embedded in the concrete rail 55, and the sheath pipes communicate with each other. The plurality of balustrade bodies 50 can also be connected by inserting the connecting material 34 and tensioning it.

  When the balustrade body 50 is installed on the concrete floor slab C, the anchor bolts 37a protruding above the anchor plate 30a are exposed from the respective recessed portions 51 provided in the concrete balustrade portion 55. Each balustrade body 50 is fixed to the concrete floor slab C by a nut 37b being fastened to an anchor bolt 37a exposed from the recessed portion 51 and a padding material 52 filled from above. As the filling material 52, mortar, concrete, or the like can be used.

  In addition, when there is unevenness on the surface of the concrete floor slab C, or when a space of about 30 mm is provided so that a filling material such as mortar is easily filled, a spacer is provided between the anchor plate 30a and the concrete floor slab C. 39 (for example, a liner plate 39a as shown in FIGS. 4 (a) and 4 (b), a positioning nut 39b as shown in FIGS. 5 (a) and 5 (b), etc.) and the spacer 39 is installed. By filling the gap with the filling material 38, it is possible to avoid the influence of unevenness. When the positioning nut 39b is used as the spacer 39, it is not necessary to arrange the liner plate 39 below the anchor plate 30a, so that the filling property of the interstitial material 38 is higher than when the liner plate 39 is arranged.

  12A and 12D show the case where the anchor plate-equipped struts 30 are installed at intervals of 1000 mm, the installation interval of the anchor plate-provided struts 30 can be wider or narrower than 1000 mm.

(Embodiment 4 of the protective fence)
A fourth embodiment of the protective fence of the present invention will be described with reference to FIGS. 13 (a) to (e) and FIGS. 14 (a) to (e). In this embodiment, the guard fence is a concrete wall rail (stiffness using the structure shown in FIGS. 4A and 4B and FIGS. 5A and 5B) of the “embodiment 4 of the column installation structure”. This is an example of a protective fence). The basic configuration of this embodiment is the same as that of Embodiment 3 of the protective fence. The difference is that instead of the horizontal connecting member 34, the adjacent rail body 60 is connected using a joint 62 and a steel material (a main reinforcing bar 61, an auxiliary reinforcing bar 63, and an auxiliary steel pipe 64 described later).

  13 (a) to 13 (e) and FIGS. 14 (a) to 14 (e), C is a concrete floor slab, 30 is a column with an anchor plate, 37 is a fixing means, 60 is a balustrade body, 61 is a main reinforcing bar, 63 Is an auxiliary rebar, and 64 is an auxiliary steel pipe. In the following, description of the matters already described will be omitted, and the rest will be described.

  The basic structure of the concrete floor slab C and the handrail main body 60 of this embodiment is the same as that of the handrail main body 50 described in the above “third embodiment of the guard fence”. The difference is that the joint portion 62 is provided on the rail body 60, the adjacent rail bodies 60 are connected to each other using the joint portion 62, and the two steel ribs 30c are connected to the anchor plate 30a. The point provided is that the through holes 30d are provided in the steel ribs 30c.

  The handrail body 60 is manufactured in a factory. As an example, the balustrade body 60 shown in FIGS. 13A to 13E and FIGS. 14A to 14E includes three anchor plate-supported columns 30 and a concrete balustrade portion 65. The concrete balustrade section 65 is formed of reinforced concrete, fiber reinforced concrete, or the like. Similar to the conventional concrete wall rail, the concrete rail 65 includes an outer wall surface 60a, a top surface 60b, an inner wall surface 60c, and an inclined surface 60d. Two concave portions 71 are provided on each of the outer wall surface 60a and the inclined surface 60d of the concrete rail section 65.

  A large number of main reinforcing bars 61 are arranged in the horizontal direction and the vertical direction in the concrete rail 65 of this embodiment. In the example shown in FIG. 13B, a main reinforcing bar 61 having a diameter of 13 mm (D13) is used. The main rebar 61 may be thicker or thinner than this. The main reinforcing bars 61 arranged in the horizontal direction protrude outwardly in the longitudinal direction of the balustrade body 60, and the portions serve as joint portions 62 used for connection with the adjacent balustrade body 60. In this embodiment, the joint part 62 is constituted by a so-called loop line. The joint portion 62 may be a mechanical joint such as a coupler, a lap joint, or an FD grip. FIG. 13A shows an example in which the joint part 62 is provided in eight stages, but the joint part 62 may be more or less than eight stages. Generally, this reinforcing bar interval is 100 mm to 200 mm. It is desirable that the joint portion 62 is provided so as to be shifted up and down so that the loop bars of the adjacent balustrade bodies 60 do not interfere with each other.

  A plurality of studs 75 with heads are welded to the outer periphery of each column member 30b in order to enhance the integrity with the concrete balustrade section 65. The anchor plate 30 a of each column 30 with an anchor plate protrudes below the bottom surface of the concrete rail 65 and is fixed to the concrete floor slab C by a fixing means 37. FIG. 13 (a) shows a state in which four handrail bodies 60 are arranged (only a part of the handrail body 60 at the left end and the right end is shown), but in actual sites, the necessary number along the bridge axis direction is shown. The handrail body 60 is installed.

  When the railing main body 60 is installed on the concrete floor slab C, the two anchor bolts 37a protruding above the anchor plate 30a are exposed from the recessed portions 71 of the outer wall surface 60a and the inclined surface 60d. The balustrade body 60 is fixed to the concrete floor slab C by a nut 37b being fastened to an anchor bolt 37a exposed from the recessed portion 71 and a padding material 72 filled from above. As the filling material 72, mortar, concrete, or the like can be used.

  In this embodiment, steel materials (main reinforcement 61 and auxiliary reinforcement described later) are arranged so that the plurality of balustrade bodies 60 installed on the concrete floor slab C are substantially orthogonal to the axial direction of the joint 62 and the joint 62. 63, auxiliary steel pipe 64). Specifically, four auxiliary rebars 63 are disposed inside the joint portion 62 that is arranged so as to overlap vertically, and the lower end side of the auxiliary rebar 63 is embedded and fixed in the concrete floor slab C. The adjacent balustrade bodies 60 are connected to each other by placing the interlining material 67 on the portion where the joint portion 62 and the auxiliary reinforcing bar 63 are disposed (on-site driving).

  In this embodiment, the auxiliary reinforcing bar 63 having a diameter of 16 mm (D16) is used, but the auxiliary reinforcing bar 63 may be thicker or thinner than this. As the filling material 67, mortar, concrete, or the like can be used. When placing the padding material 67, the formwork is installed so that the outer shape of the balustrade body 60 is the same. The auxiliary reinforcing bars 63 can be directly embedded and fixed as shown in FIG. 13A, or can be fixed and embedded in the concrete slab C via the mechanical joint 68 as shown in FIG. 13E. For the mechanical joint 68, for example, an FD grip or a coupler can be used.

  In the example shown in FIGS. 13A to 13E, the case where the auxiliary reinforcing bar 63 is disposed inside the joint portion 62 so as to be substantially orthogonal to the axial direction of the joint portion 62 is taken as an example. Instead, a steel pipe (auxiliary steel pipe) 64 as shown in FIGS. 14A to 14E can be provided. The auxiliary steel pipe 64 can be directly embedded and fixed as shown in FIG. 14 (a), or can be embedded and fixed using the embedded pipe 69 as shown in FIG. 14 (e). When the buried pipe 69 is used, the buried pipe 69 is buried in the concrete floor slab C, the auxiliary steel pipe 64 is inserted into the buried pipe 69, and the filling material 70 is filled between the buried pipe 69 and the auxiliary steel pipe 64. Thus, the auxiliary steel pipe 64 can be buried and fixed. As the filling material 70, mortar, concrete, or the like can be used.

  On the outer periphery of the buried pipe 69, a headed stud (slip stopper) 75 can be provided as shown in FIG. The headed stud 75 can be provided on both the inner periphery and the outer periphery of the buried pipe 69 or only on the inner periphery. The headed stud 75 can be omitted. Further, a through hole 66 can be provided in the lower end portion of the auxiliary steel pipe 64 (portion embedded in the concrete floor slab C) instead of the headed stud 75 or together with the headed stud 75. When the through hole 66 is provided, the filling material 70 flows into the auxiliary steel pipe 64 and the auxiliary steel pipe 64 is firmly fixed.

  In addition, the connection structure using the main reinforcement 61 and auxiliary steel materials (auxiliary reinforcement 63, auxiliary steel pipe 64, etc.) is the concrete wall height column (FIGS. 6A to 6C) to FIG. 9 (a) to (c) can also be applied as a connecting structure of the concrete wall height column. Also in this case, the horizontal connecting material 14 can be omitted.

  In the example of FIGS. 13A and 14A, the support columns 30 with anchor plates are installed at intervals of 667 mm, but the installation interval of the support plates 30 with anchor plates can be wider or narrower than 667 mm. . Further, in the examples of FIGS. 13A and 14A, the case where three anchor plates 30 with anchor plates are embedded in one rail body 60 is an example. More or less than books.

  For convenience of explanation, the present application is described separately for each embodiment, but the matters described in each embodiment are not completely independent, and can be applied to other embodiments as appropriate. . In the above [Protective fence embodiment 1], [Protective fence embodiment 3] and [Protective fence embodiment 4], a balustrade body in which a column and a concrete balustrade are integrated is manufactured at a factory. As an example, the protective fence in this application is installed on the concrete floor slab C in advance, and the column is manufactured and fixed on the column. Is also included. In this case, only the concrete balustrade part in which the column is not embedded is used for the balustrade body.

  The support mounting structure of the present invention can be widely used as a support for a rigid protective fence or a flexible protective fence. Moreover, the guard fence of this invention can be widely utilized as a guard fence installed in the width direction side and the isolation | separation part of a bridge.

10 strut 10a buried portion 11 padding material 12 opening 13 stud with head (stop)
14 Horizontal connecting material 15 Insertion hole 15a Inlet 15b Outlet 16 Buried pipe 20 Strut 20a (of strut) buried portion 21 Filling material 22 Opening 23 Stud with head (detent)
24 horizontal connecting member 25 insertion hole 25a inlet 25b outlet 26 base member 26a base plate 26b upright pipe 26c steel rib 27 fixing means 27a insert 27b anchor bolt 30 anchor plate post 30a anchor plate 30b post member 30c steel rib 30d through hole 34 horizontal connecting member 35 insertion hole 35a inlet 35b outlet 37 fixing means 37a anchor bolt 37b nut 38 padding material 39 spacer 39a liner plate 39b positioning nut 40 rail body 40a outer wall surface 40b top surface 40c inner wall surface 40d inclined surface 41 height Adjustment bolt 42 Insert 44 Filling material 45 Concrete balustrade section 50 Handrail body 50a Outer wall surface 50b Top surface 50c Inner wall surface 50d Inclined surface 51 Recessed portion 52 Filling material 55 Necklee rail 60 60 Main body 60a Outer wall 60b Top surface 60c Inner wall 60d Inclined surface 61 Main reinforcement 62 Joint 63 Auxiliary reinforcement 64 Auxiliary steel pipe 65 Concrete railing 66 Through hole 67 Filling material 68 Mechanical joint 69 Embedded pipe 70 Stuffing material 71 Recessed portion 72 Spacing material 75 Stud with head (stop)
C Concrete floor slab C1 Running surface (concrete slab) C2 High plateau (concrete slab) C3 Floor slab slope H (concave)

Claims (8)

In the installation structure of the column used for the protective fence,
The column is a steel pipe;
A recess is provided in the concrete floor slab for installing the column,
A buried pipe is buried and fixed in the recess,
The buried portion of the column is inserted into the buried pipe,
Between the support column and the buried pipe is filled with a filling material having a strength lower than that of the concrete floor slab,
The strut was supported by a filling material filled between the strut and the buried pipe.
The support installation structure characterized by this. In the support | pillar installation structure of Claim 1,
An opening for introducing a filling material is provided in the buried portion of the column,
Filling material is also filled into the buried part of the column,
The strut was supported by a filling material filled between the strut and the buried pipe and a filling material filled inside the strut,
The support installation structure characterized by this. In the installation structure of the column used for the protective fence,
The column is a steel pipe;
A base member with a standing pipe is fixed to a concrete floor slab to install a column,
The buried portion of the support column is inserted into the standing pipe of the base member,
A filling material having a lower strength than that of the concrete slab is filled between the support column and the standing pipe,
The strut was supported by a filling material filled between the strut and the standing pipe,
The support installation structure characterized by this. In the support post installation structure according to claim 3,
An opening for introducing a filling material is provided in the buried portion of the column,
Filling material is also filled into the buried part of the column,
The strut was supported by a filling material filled between the support column and the standing pipe and a filling material filled inside the support column,
The support installation structure characterized by this. In the installation structure of the column used for the protective fence,
Anchor bolts are installed on the concrete floor slab,
A spacer is fixed to the anchor bolt or disposed on the concrete floor slab,
A support with a plate in which a support member made of steel pipe is erected on the plate is arranged on the spacer,
The plate of the support column with the plate is fixed to the concrete floor slab by fixing means,
The interstitial material was filled in the space generated between the concrete floor slab and the plate by interposing the spacer.
The support installation structure characterized by this. In the protective fence installed on the side of the bridge in the width direction or at the separation part,
A plurality of struts provided with the strut installation structure according to any one of claims 1 to 5 are provided at intervals in the bridge axis direction,
The plurality of struts are connected by one or more horizontal connecting materials,
A protective fence characterized by that. In the protective fence installed on the side of the bridge in the width direction or at the separation part,
Two or more handrail bodies are arranged along the bridge axis direction of the bridge on the concrete floor slab of the bridge,
The balustrade body comprises one or more struts and a concrete balustrade formed of reinforced concrete or fiber reinforced concrete,
The column is embedded and fixed in the concrete railing so as to be integrated with the concrete railing,
The two or more balustrade bodies are connected by one or more horizontal connecting members inserted into the concrete balustrade,
The pillars of the two or more balustrade bodies are fixed to the concrete floor slab by being installed on the concrete floor slab with the pillar installation structure according to any one of claims 1 to 5.
A protective fence characterized by that. In the protective fence installed on the side of the bridge in the width direction or at the separation part,
Two or more handrail bodies are arranged along the bridge axis direction of the bridge on the concrete floor slab of the bridge,
The balustrade body includes one or two or more struts and a joint portion used to connect a concrete balustrade portion formed of reinforced concrete or fiber reinforced concrete and an adjacent balustrade body,
The column is embedded and fixed in the concrete railing so as to be integrated with the concrete railing,
The two or more balustrade bodies are arranged such that the joints overlap or are close together,
An auxiliary steel material is disposed in the vicinity of the joint portion so as to be substantially orthogonal to the axial direction of the joint portion,
The auxiliary steel material is fixed with its lower end side buried in the concrete floor slab,
The space between the side of the adjacent balustrade body and the concrete slab and filled with the filling material in the space where both joint portions of the adjacent balustrade body and the auxiliary steel material are disposed,
The pillars of the two or more balustrade bodies are fixed to the concrete floor slab by being installed on the concrete floor slab with the pillar installation structure according to any one of claims 1 to 5.
A protective fence characterized by that.

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