Inspection passage and step

Abstract

To enable workers to walk safely on an inspection passage even if there are obstacles, etc.SOLUTION: There are a slab 2 which is in a plate shape longer in one direction, support poles 3 which are erected on the widthwise sides of the slab 2 at intervals in the longitudinal direction of the slab 2, a handrail 4 which is attached to the support poles 3 so as to extend along the longitudinal direction of the slab 2 and a step 10 which extends in the width direction of the slab 2; the step 10 is configured to be attached above the slab 2 to the support poles 3 or mounting members near an area above the slab 2 where there are obstacles extending in the width direction of the slab 2.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an inspection path and steps for inspecting and testing bridges. [Background technology]

[0002] Conventionally, metal inspection roads have been used to inspect and check the superstructure and substructure of bridges. Metal inspection roads have the problem of being prone to rust due to moisture, etc., so resin inspection roads, such as those described in Patent Document 1, have been used as replacements for metal inspection roads. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6915218 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the inspection path is replaced with a resin inspection path, there may be protruding objects remaining near the connection portion of the new inspection path with another inspection path.

[0005] For example, as shown in FIG. 5, there may be obstacles such as a structural member 202 crossing an inspection path 201 and a step at a manhole 203 at the entrance to the inspection path.

[0006] In such a case, there is a problem that the obstacles make it difficult for workers to pass through the inspection path 201.

[0007] The present invention has been made in consideration of the above points, and its purpose is to enable workers to walk safely even when there are obstacles or the like on the inspection path. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides a device for safely climbing over obstacles.

[0009] Specifically, the inspection path of the first invention is: A long, plate-like deck slab in one direction, Support columns erected at intervals in the longitudinal direction of the deck slab on the width direction side portions of the deck slab; A handrail attached to the support pillar so as to extend along the longitudinal direction of the deck slab; A step extending in the width direction of the deck, The step is configured to be attached above the deck to a mounting member provided on the support or the deck near an area above the deck where there is an obstacle extending in the width direction of the deck.

[0010] According to the above configuration, by attaching a step above the deck slab on a dedicated mounting member provided on the support pillar or deck slab near the obstacle, the worker can easily avoid the obstacle and pass safely by using the step as a footstool. Here, "near the area where the obstacle is located extending in the width direction of the deck slab" means the range from the area where the obstacle is located that a worker of average build can reach within the stride of his / her feet.

[0011] In the second invention, in the first invention, The step is provided to connect a pair of support columns or mounting members that are provided opposite each other in the width direction of the deck slab.

[0012] According to the above configuration, steps can be easily and reliably provided at relatively rigid portions between the support posts or between the mounting members on the inspection path.

[0013] In the third invention, in the first invention, The floor slab, the support pillars, the handrails, and the steps are resin molded products, The step is a hollow pultruded piece made of fiber-reinforced resin.

[0014] According to the above configuration, if the step is a resin molded product, it can be easily molded. In particular, if the step is a pultrusion molded product made of a reinforced fiber resin, a step having high rigidity despite being lightweight can be used.

[0015] In a fourth aspect of the present invention, in the third aspect of the present invention, The step is configured to be detachable by means of a fastening bolt made of resin.

[0016] With the above configuration, the steps are fastened to the resin support posts using rust-resistant resin bolts, making it possible to obtain an inspection path that is even more rust-resistant. Moreover, because the steps are molded from resin, bolt insertion holes can be easily machined at the installation site to match the height of obstacles, etc.

[0017] The step of the fifth invention has a fastening portion that is attached to the inspection path of any one of the first to fourth inventions.

[0018] According to the above configuration, a step that can be easily attached to an inspection path can be obtained, allowing safe passage even if there are obstacles. [Effects of the Invention]

[0019] As described above, according to the present invention, steps are provided on the support posts near the obstacles, so that even if an obstacle exists on the inspection path, the person can walk safely. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a front view showing a portion of an inspection path with steps attached thereto according to an embodiment of the present invention. [Figure 2] FIG. [Figure 3] FIG. 2 is a front view showing the entirety of one inspection path. [Figure 4] FIG. 10 is a front view showing a part of an inspection path to which steps according to a modified example of an embodiment of the present invention are attached. [Figure 5]FIG. 1 is a perspective view showing the vicinity of a bridge girder to which a conventional inspection path is attached. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0022] Figures 1 to 3 show an inspection path 1 according to an embodiment of the present invention, which includes a plate-shaped deck 2 that is long in one direction, supports 3 that are erected on the widthwise sides of the deck slab 2 at intervals along the longitudinal direction of the deck slab 2, and handrails 4 that are attached to the supports 3 so as to extend along the longitudinal direction of the deck slab 2.

[0023] Specifically, the deck slab 2 is made of a hollow pultruded resin molded product that is pultruded along the longitudinal direction. There are no particular restrictions on the length, width, thickness, etc., but for example, the length is 6 m, the width is 600 mm, and the thickness is 140 mm. The deck slab 2 has a floor surface 2a, a bottom surface 2b, and a pair of side surfaces 2c, and is provided with reinforcing ribs 2d extending in the pultrusion direction inside. The support columns 3 are provided, for example, at approximately equal intervals along the longitudinal direction of the deck slab 2, with five on each side, for a total of 10 columns, but the number is not particularly limited.

[0024] The deck 2 is made of, for example, a reinforced fiber resin material, which has excellent durability and is not susceptible to corrosion due to salt or snow-melting agents. Furthermore, the surface may be coated with fluorine paint to provide excellent weather resistance.

[0025] As described above, the deck slab 2 has an integrated structure, which provides a sense of security due to its high rigidity, and the simple structure allows for shorter assembly times compared to steel structures in which multiple parts are assembled with bolts.

[0026] As shown in Figure 2, the floor surface 2a is highest at the center of its width when viewed longitudinally, and has a gentle downward slope from there to both sides in the width direction, which helps prevent puddles. Finishing the floor surface 2a with a known anti-slip coating also provides an anti-slip effect.

[0027] The support pillar 3 includes a support pillar body 3a with an L-shaped cross section to which the handrail 4 is attached, and a reinforcing portion 3b with an L-shaped cross section attached opposite the lower portion of the support pillar body 3a. The lower portion of the support pillar body 3a and the reinforcing portion 3b are fastened to the side surface 2c of the deck slab 2 with a resin fastening bolt 20. In this embodiment, a metal L-shaped angle 2e is provided on the back side of the side surface 2c for reinforcement. This L-shaped angle 2e may be made of fiber-reinforced resin, or may be omitted if the deck slab 2 is thick or otherwise highly rigid. In this embodiment, for simplicity, fastening bolts with different bolt diameters and at various mounting positions are all designated by the same reference numeral as the fastening bolt 20.

[0028] A plurality of toe plates 5 extending longitudinally are provided on both sides of the width of the deck slab 2. Both longitudinal ends of each toe plate 5 are fastened to the lower part of the support body 3a and the reinforcing part 3b with resin fastening bolts 20. These toe plates 5 prevent tools and the like from falling down from the deck slab 2.

[0029] Above the toe board 5, handrails 4 extend in the longitudinal direction and are spaced apart vertically, with three handrails 4 fixed to each support post 3, although the number and installation height are not particularly limited. The handrails 4 are made, for example, of cylindrical reinforced fiber resin pipes, and for example, the uppermost handrail 4 is made of a reinforced fiber resin pipe that is thicker than the other handrails 4.

[0030] A step 10 extending in the width direction of the deck slab 2 is fastened to the support 3 at a predetermined height with a resin fastening bolt 20. This step 10 is attached to the support 3 above the deck slab 2 near an area where there is an obstacle above the deck slab 2 extending in the width direction of the deck slab 2. In this embodiment, the step 10 is provided in two locations on the support 3, one in front of one of the inspection paths (for example, 6 m long in the longitudinal direction) and one on the back side. The step 10 can be attached to any of the support 3, and should be provided in front of an area where there is an obstacle such as a structural member crossing the inspection path 1 or a step in a manhole at the entrance to the inspection path, as shown in Figure 4.

[0031] The step 10 is provided to connect a pair of highly rigid support pillars 3 that are provided opposite each other in the width direction of the deck slab 2. Therefore, the step 10 can be easily and reliably provided in a relatively rigid portion between the support pillars 3 on the inspection path 1.

[0032] The step 10 is a hollow pultrusion molded product made of reinforced fiber resin and having a rectangular frame-like cross section. This allows bolt insertion holes for fastening to the support 3 to be easily formed on-site. In this embodiment, two bolt insertion holes are drilled per support 3, and the fastened portion 11 is sandwiched between the head of a fastening bolt 20 inserted into the bolt insertion holes and a nut. The fastening part may be a metal fastening bolt 20, but a resin fastening bolt 20 is preferable because it is resistant to rust.

[0033] As described above, in this embodiment, the step 10 is made of the same reinforced fiber resin molded product as the entire inspection path 1 made of a resin molded product, and is lightweight yet highly rigid.

[0034] Like the other components, the step 10 is also configured to be detachable by means of a fastening bolt 20 made of resin.

[0035] The step 10 has a fastening portion 11 made up of a bolt insertion hole opened by a power tool or the like at the construction site, and therefore can be attached to the inspection path 1 easily and reliably.

[0036] The step 10 may be coated with a fluorine-based paint, similar to the deck slab 2, to improve weather resistance, and it is particularly desirable that the top surface contain anti-slip components such as aggregate.

[0037] In this embodiment, steps 10 extending in the width direction are attached to the passageway of the deck slab 2, and by using these steps 10 as a stepping stone, people can easily avoid obstacles and pass safely.

[0038] In this embodiment, the inspection path 1 is made more resistant to corrosion such as rust by fastening the various components such as the step 10 with fastening bolts 20 made of rust-resistant resin.

[0039] In this embodiment, all components are made of lightweight fiber-reinforced resin wherever possible, which provides high durability and rigidity and reduces the construction load.

[0040] Therefore, the inspection path 1 according to this embodiment allows workers to walk safely even if there are obstacles on the inspection path 1. Furthermore, this embodiment provides highly rigid steps 10 that can be easily attached to the inspection path 1, allowing workers to walk safely even if there are obstacles.

[0041] -Variations- 4 shows an inspection path 101 according to a modified example of the embodiment of the present invention, which differs from the above-described embodiment in that the fixing position of the step 10 is different. In this modified example, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

[0042] In this modified example, the step 10 is attached to a dedicated mounting member 106 provided on the deck slab 2. The mounting member 106 has a shape similar to that of the base end side of the support 3 below the handrail 4, and includes a mounting main body 106a and a reinforcing member 106b. Note that the shape of the mounting member 106 is not limited to this.

[0043] The step 10 is attached by a fastening bolt 20 to a fastening portion 11 formed as a through hole provided in the mounting portion main body 106a, as in the above embodiment.

[0044] This modified example can be applied to branching points for stairs, and if there is an obstacle on the deck at the branching point, special mounting members 106 are provided on both sides of the width of the deck slab 2, and steps 10 are fixed to these, making it easy to pass through even if there is an obstacle.

[0045] (Other embodiments) The present invention may be configured as follows in relation to the above embodiment.

[0046] That is, in the above embodiment, the pillars 3 are erected at opposing positions on both sides of the deck slab 2 in the width direction, but for example, the pillars 3 may be erected only on one side in the width direction, with the other side facing a structural member of the bridge (not shown). In that case, one longitudinal side of the step 10 can be fastened to the pillar 3 with a resin fastening bolt 20, while the other side can be fixed to a bracket (not shown) or the like separately attached to the structural member of the bridge.

[0047] In the above embodiment, all the members are attached with fastening bolts 20 made of resin, but they may also be attached with bolts made of stainless steel or other materials that are resistant to rust.

[0048] It should be noted that the above-described embodiments are essentially preferred examples and are not intended to limit the scope of the present invention, its applications, or uses. [Explanation of symbols]

[0049] 1,101 inspection tracks 2 Floor slab 2a Floor surface 2b Bottom 2c side 2d Reinforcement Rib 2e L-shaped angle 3 pillars 3a Post body 3b Reinforcement part 4 Handrails 5 Toe board 10 steps 11 Part to be fastened 20 Fastening bolt 106 Mounting material 106a Mounting body 106b Reinforcement member

Claims

1. A long, plate-like deck slab in one direction, Support columns erected at intervals in the longitudinal direction of the deck slab on the width direction side portions of the deck slab; A handrail attached to the support pillar so as to extend along the longitudinal direction of the deck slab; A step extending in the width direction of the deck, The step is configured to be attached above the deck to a mounting member provided on the support or the deck near an area where an obstacle extending in the width direction of the deck is located above the deck. An inspection path characterized by:

2. The step is provided to connect a pair of support columns or the mounting members provided opposite each other in the width direction of the deck slab.

2. The inspection path according to claim 1.

3. The floor slab, the support pillars, the handrails, and the steps are resin molded products, The step is a hollow pultrusion molded product made of reinforced fiber resin.

2. The inspection path according to claim 1.

4. The step is configured to be detachable by means of a fastening bolt made of resin.

4. The inspection path according to claim 3.

5. The inspection path according to any one of claims 1 to 4, further comprising a fastening portion that is attached to the inspection path. A step characterized by:

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