Equipment support structure

Abstract

The support structure for the equipment will have excellent corrosion resistance. [Solution] In a support structure for equipment that supports equipment 3 along the wall surface 2 of a structure 1, the support structure includes an FRP column member 4 fixed to the wall surface 2 and an FRP receiving member 5 projecting laterally from the column member 4, wherein the column member 4 and the receiving member 5 are composed of longitudinal members with an L-shaped cross-section, and the receiving member 5 is fixed to the column member 4 in a surface contact state.

Description

Technical Field

[0001] This invention relates to a support structure for facilities such as cables and pipes.

Background Art

[0002] In underground structures such as tunnels and utility tunnels, various long facilities such as cables and pipes are laid along the inner wall surface, and various support structures for supporting the facilities at predetermined intervals have been proposed conventionally.

[0003] For example, the support structure of Patent Document 1 has a column member fixed to the wall surface and a receiving member protruding laterally from the column member. The column member and the receiving member are longitudinal members configured in an L-shaped cross section. The column member is fixed to the wall surface, and one surface of the two receiving members is fixed to the column member so as to be back-to-back. The receiving member is fixed to the column member by a fastening tool such as a bolt.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Inside underground structures, moisture tends to accumulate, so the support structure for facilities installed there is required to have excellent corrosion resistance. In the support structure of Patent Document 1, it is shown that a synthetic resin material or an aluminum material can be adopted as the material of the column member and the receiving member. However, the synthetic resin material may deteriorate due to ambient moisture (water), and the surface may become sticky or brittle. Furthermore, the synthetic resin material is not very strong. Also, the aluminum material may generate rust on the surface due to corrosion by moisture, which may damage the appearance. Also, outside underground structures, the same problems can occur in support structures placed in a humid environment.

[0006] The problem this invention aims to solve is to provide a support structure for equipment such as cables and pipes that is highly corrosion-resistant. [Means for solving the problem]

[0007] To solve the above problems, this invention provides a support structure for equipment having the following configuration. [Configuration 1] In a support structure for equipment that supports equipment on the wall surface of a structure, A column member made of FRP fixed to the aforementioned wall surface, It has a receiving member made of FRP that protrudes laterally from the column member, The column member and the receiving member are composed of longitudinal members with an L-shaped cross-section. The receiving member is a support structure for equipment, fixed to the column member in a surface contact state.

[0008] In this configuration, FRP is used for both the column members and the support members, resulting in superior corrosion resistance, less deterioration over time due to contact with moisture, and greater strength compared to conventionally used synthetic resin materials. Furthermore, since the column members and support members have an L-shaped cross-section, they offer excellent rigidity and are resistant to deformation. In addition, because the support members are in surface contact with the column members, they can be stably fixed and stress concentration at the fixed portion can be mitigated.

[0009] [Configuration 2] The support structure for the equipment according to configuration 1, wherein the receiving member is an FRP pultruded molded body, and the cross-sectional shape perpendicular to its longitudinal direction is constant over its entire length in the longitudinal direction.

[0010] In this configuration, the receiving member has a simple structure because the cross-sectional shape perpendicular to the longitudinal direction is constant throughout its entire length. Furthermore, since it is an FRP pultruded molded product, receiving members of any length can be easily manufactured by cutting the molded product produced by pultruded molding to any desired length.

[0011] [Configuration 3] The column member is an FRP pultruded molded body, and its cross-sectional shape perpendicular to its longitudinal direction is constant over its entire length in the longitudinal direction. The support structure for the equipment according to configuration 2, wherein the cross-sectional shape of the receiving member perpendicular to the longitudinal direction and the cross-sectional shape of the column member perpendicular to the longitudinal direction are the same shape and of the same size.

[0012] In this configuration, the cross-sectional shape perpendicular to the longitudinal direction of the support member and the cross-sectional shape perpendicular to the longitudinal direction of the column member are the same shape and size. Therefore, the support member and column member can be manufactured by cutting a molded product manufactured by the same pultrusion process to the lengths corresponding to the support member and column member, respectively. Since the same pultruded molded product can be used to manufacture the support member and column member, the manufacturing cost is low.

[0013] [Structure 4] The support structure for the equipment according to any one of configurations 1 to 3, wherein the receiving member is fastened to the column member by a bolt made of FRP.

[0014] In this configuration, FRP bolts are used as fasteners between the receiving member and the column member, resulting in excellent corrosion resistance of the fasteners.

[0015] [Composition 5] The column member has an L-shaped cross-section, comprising a first plate-like portion and a second plate-like portion rising from one end edge of the first plate-like portion. The support structure for equipment according to any one of configurations 1 to 4, wherein the receiving member is fixed in a surface contact state to the surface opposite to the side of the first plate-shaped portion of the column member on which the second plate-shaped portion rises.

[0016] In this configuration, the receiving member is fixed while avoiding the recessed area where the first and second plate-like parts of the column member meet (the corner where the second plate-like part rises from the first plate-like part). This allows for easier connection of the column member and the receiving member during installation, as it can be done in a wider space. Furthermore, it prevents the accumulation of foreign objects in that recessed area after use.

[0017] [Configuration 6] The column member is fixed to the wall surface with a ceramic anchor, and is the support structure of the equipment according to any one of Configurations 1 to 5.

[0018] In this configuration, since a ceramic anchor is used as the anchor for fixing the column member to the wall surface, the corrosion resistance of the anchor is excellent. Therefore, the service life of the support structure of the equipment is long.

[0019] [Configuration 7] The equipment holding member for holding the equipment is inserted into the edge of the receiving member, and is the support structure of the equipment according to any one of Configurations 1 to 6.

[0020] In this configuration, since the attachment of the equipment holding member to the receiving member can be done simply by inserting it, the attachment is easy. [Effect of the Invention]

[0021] The support structure of the equipment of this invention adopts FRP for the material of the column member and the material of the receiving member, so it has excellent corrosion resistance, little aging deterioration due to contact with moisture, etc., and has high strength. Also, the column member and the receiving member are L-shaped in cross section, so they have excellent rigidity and are difficult to deform. Further, since the receiving member is in surface contact with the column member, it can be stably fixed, and stress concentration at the fixing portion can be alleviated. [Brief Explanation of Drawings]

[0022] [Figure 1] Perspective view of the support structure of the equipment of the embodiment of this invention [Figure 2] Side view of FIG. 1 [Figure 3] Plan view of FIG. 1 [Figure 4] Figure showing a modified example in which the attachment surface of the receiving member to the column member in FIG. 1 is the back surface of the attachment surface in FIG. 1 [Figure 5] Side view of FIG. 4 [Figure 6] Plan view of FIG. 4 [Figure 7] A perspective view showing a modified example of the receiving member in Figure 1. [Figure 8] A perspective view showing a modified example of the receiving member in Figure 1. [Figure 9] Figure 1 is a partial cross-sectional view showing the support structure of the equipment attached to a precast concrete structure equipped with a manhole. [Modes for carrying out the invention]

[0023] Figure 1 shows a support structure for equipment according to an embodiment of this invention (hereinafter simply referred to as the support structure). This support structure supports equipment (cables 3) laid along the wall surface 2 (see Figure 2) of a structure 1 at predetermined intervals. As shown in Figure 2, this support structure is composed of an equipment support structure 20 having a column member 4 fixed to the wall surface 2 and a receiving member 5 projecting laterally from the column member 4. In this embodiment, the structure 1 using this support structure is described using an underground structure such as a tunnel or utility tunnel as an example, but it can also be used in various structures with wall surfaces other than those in this embodiment, for example, tunnels and shafts.

[0024] As shown in Figure 1, the column member 4 has a flat first plate-like portion 6 and a flat second plate-like portion 7 rising from one end edge of the first plate-like portion 6. The first plate-like portion 6 and the second plate-like portion 7 are rectangular plates with longitudinal sides. The column member 4 is formed by the first plate-like portion 6 and the second plate-like portion 7 to have an L-shaped cross-section (cross-section perpendicular to the longitudinal direction). The cross-sectional shape of the column member 4 perpendicular to the longitudinal direction is formed to be a constant shape (L-shape) along the entire length in the longitudinal direction. The column member 4 is an FRP pultruded molded body formed by pultruded molding of FRP (fiber-reinforced plastic).

[0025] As shown in Figures 2 and 3, the first plate-like portion 6 has multiple bolt holes 8. In this embodiment, two bolt holes 8 are formed side by side in the vertical direction. The second plate-like portion 7 rises from the first plate-like portion 6 and extends perpendicularly to the plate surface of the first plate-like portion 6. The second plate-like portion 7 has multiple holes 9 through which anchors 13 used for fixing to the wall surface 2 are passed.

[0026] As shown in Figure 1, the receiving member 5 has a flat third plate-like portion 10 and a flat fourth plate-like portion 11 rising from one end edge of the third plate-like portion 10. The third plate-like portion 10 and the fourth plate-like portion 11 are rectangular plates with longitudinal sides. The receiving member 5 is formed by the third plate-like portion 10 and the fourth plate-like portion 11 to form an L-shaped cross-section (cross-section perpendicular to the longitudinal direction). The receiving member 5 has a consistent L-shaped cross-sectional shape perpendicular to the longitudinal direction throughout its entire length. The receiving member 5 is an FRP pultruded molded body formed by FRP pultrusion molding.

[0027] As shown in Figures 2 and 3, the third plate-like portion 10 has multiple bolt holes 12 that correspond to the positions of the bolt holes 8. In this embodiment, two bolt holes 12 are formed side by side in the vertical direction. As shown in Figure 1, the fourth plate-like portion 11 rises from the third plate-like portion 10 and extends perpendicularly to the plate surface of the third plate-like portion 10.

[0028] The cross-sectional shape of the receiving member 5 perpendicular to the longitudinal direction and the cross-sectional shape of the column member 4 perpendicular to the longitudinal direction are formed to be the same shape and the same size.

[0029] The support structure for the wall surface 2 using this equipment support structure 20 will now be described. As shown in Figure 2, the second plate-shaped part 7 is fixed to the wall surface 2 facing the wall surface 2, with its longitudinal direction being vertical. The second plate-shaped part 7 is fixed to the wall surface 2 with ceramic anchors 13 through holes 9 (see Figure 3).

[0030] As shown in Figure 3, the third plate-like portion 10 is in surface contact with the opposite side (the left side in the figure) of the first plate-like portion 6 from the side where the second plate-like portion 7 rises, and is fixed to the first plate-like portion 6 so that its longitudinal direction is horizontal (vertical in the figure). The third plate-like portion 10 is fixed to the first plate-like portion 6 via bolt holes 8 and 12 using FRP bolts 14 and FRP nuts 15. At this time, the receiving member 5 is arranged such that the fourth plate-like portion 11 is located above the third plate-like portion 10 and extends horizontally. As shown in Figure 9, multiple of these support structures are arranged along the wall surface 2 at predetermined intervals (for example, every 3m, every 5m, etc.), and the cable 3 is placed on the upper surface of the fourth plate-like portion 11 (see Figure 1) to support the cable 3. Here, multiple receiving members 5 can be provided on the column member 4 in a vertical direction, and the cable 3 can be placed on each receiving member 5.

[0031] As described above, according to this embodiment, as shown in Figure 1, since FRP is used for the material of the column member 4 and the receiving member 5, it has excellent corrosion resistance, less deterioration over time due to contact with moisture, etc., and high strength. In addition, since the column member 4 and the receiving member 5 have an L-shaped cross-section, they have excellent rigidity and are resistant to deformation. Furthermore, since the receiving member 5 is in surface contact with the column member 4, it can be fixed stably and stress concentration at the fixed part can be alleviated. In addition, since the column member 4 and the receiving member 5 are pultruded molded bodies, they have high strength in the longitudinal direction (the direction in which the pultruded molded body is pulled out). Furthermore, since the anchor 13 and bolt 14 are also made of non-metallic material, even higher corrosion resistance can be expected.

[0032] Here, as shown in Figures 4 to 6, the receiving member 5 can also be fixed to the first plate-shaped part 6 such that the third plate-shaped part 10 is in surface contact with the surface of the first plate-shaped part 6 on the side where the second plate-shaped part 7 rises (the right side in Figure 6), and its longitudinal direction is horizontal. In this case, as shown in Figure 5, the edge of the longitudinal end of the receiving member 5 can also be positioned away from the second plate-shaped part 7 (away to the right in the figure). In this case, as shown in Figure 6, a gap is created between the second plate-shaped part 7 and the fourth plate-shaped part 11, which prevents water and foreign matter from accumulating in the recessed area sandwiched between the first plate-shaped part 6, the second plate-shaped part 7, and the fourth plate-shaped part 11 (the area indicated by arrow A in the figure).

[0033] Furthermore, as shown in Figure 1, in this embodiment the shape of the third plate-shaped portion 10 of the receiving member 5 is rectangular, but as shown in Figure 7, the portion attached to the first plate-shaped portion 6 may be made longer than the other portions in the direction perpendicular to the longitudinal direction (downward in the figure). The receiving member 5 in Figure 7 can be formed by molding a member in which the cross-sectional shape perpendicular to the longitudinal direction is a constant shape (L-shape) along the entire length in the longitudinal direction by FRP pultrusion molding, and then cutting a notch into a part of the third plate-shaped portion 10 (the tip on the side furthest from the column member 4).

[0034] In this case, the portion of the receiving member 5 that is attached to the first plate-shaped portion 6 of the third plate-shaped portion 10 is long in the direction in which the load is applied (vertical direction in the figure), so it has high strength against bending loads. In addition, the vertical spacing between the bolt holes 8 and 12 (see Figures 2 and 3) can be widened, so the concentrated load applied around the bolt holes 8 and 12 can be reduced.

[0035] Alternatively, as shown in Figure 8, a configuration may be adopted in which an equipment holding member 16 for holding the equipment 3 is inserted into the edge of the receiving member 5. In this case, it is preferable that the receiving member 5 be arranged so that the fourth plate-shaped portion 11 is located below the third plate-shaped portion 10, and the plate surface of the fourth plate-shaped portion 11 extends horizontally. The equipment holding member 16 can be easily attached by simply inserting it into the edge of the receiving member 5 (the edge of the third plate-shaped portion 10). In Figure 8, the equipment holding member 16 is a rectangular plate-shaped member. The equipment holding member 16 has a linearly formed insertion groove 16a into which the upper edge of the third plate-shaped portion 10 is inserted.

[0036] On the opposite side of the insertion groove 16a (the upper side in the diagram), a cable placement groove 16b is formed, which penetrates perpendicular to the direction in which the insertion groove 16a extends. The cable placement groove 16b is formed by cutting out an arc shape so that the cable 3 can be placed on it. The cable placement groove 16b is provided in the central part of the equipment holding member 16. The equipment holding member 16 can prevent the equipment 3 (cable 3) from moving laterally. The equipment holding member 16 can be easily attached to the receiving member 5 by simply pushing it toward the third plate-shaped part 10 so that the third plate-shaped part 10 is inserted into the insertion groove 16a.

[0037] Furthermore, this support structure can be fixed to various structures, not just tunnels and utility tunnels. For example, the equipment support structure 20 of this invention can be installed in hollow structures 17 called prefabricated manholes, as shown in Figure 9, and in various other structures 17. The structure 17 in Figure 9 is a precast concrete structure with an internal space, and concrete parts corresponding to the floor, walls, and ceiling, which are manufactured in advance, can be stacked and assembled on site. Therefore, this type of structure 17 has the advantage of being able to be installed in a short period of time. In addition, the structure 17 in Figure 9 is equipped with a manhole 18 into which a person can enter and exit, making it possible to perform maintenance and inspection work. The cable 3 placed on the equipment support structure 20 fixed to the wall surface 2 inside the structure 17 can be accessed by a worker entering the structure 17 through the manhole 18 to perform maintenance and inspection work.

[0038] In the above embodiment, the configuration of this invention was described using long cables 3 such as power wiring and communication wiring as an example of equipment 3 supported by the equipment support structure 20. However, the equipment 3 supported by the equipment support structure 20 is not limited to the embodiment. For example, it can also be used to support various long equipment 3 such as piping for supplying various fluids. Furthermore, in addition to long equipment 3, the equipment support structure 20 and its support structure of this invention can also be used to support various other equipment 3, such as distribution boards, meter boxes, operating equipment, and other devices.

[0039] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than by the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended to be included. [Explanation of Symbols]

[0040] 1 structure 2 Wall surface 3. Cables (equipment) 4 Pillar members 5. Support member 6. First plate-like portion 7. Second plate-like portion 13 Ceramic anchors 14 FRP bolts 16 Equipment holding member

Claims

1. In a support structure for equipment that supports equipment (3) on the wall surface (2) of a structure (1), A column member (4) made of FRP is fixed to the aforementioned wall surface (2), It has a receiving member (5) made of FRP that protrudes laterally from the column member (4), The column member (4) and the receiving member (5) are composed of longitudinal members with an L-shaped cross-section. The receiving member (5) is a support structure for equipment that is fixed to the column member (4) in a surface contact state.

2. The support structure for equipment according to claim 1, wherein the receiving member (5) is an FRP pultruded molded body, and the cross-sectional shape perpendicular to its longitudinal direction is constant over its entire length in the longitudinal direction.

3. The column member (4) is an FRP pultruded molded body, and its cross-sectional shape perpendicular to its longitudinal direction is a constant shape over its entire length in the longitudinal direction. The support structure for equipment according to claim 2, wherein the cross-sectional shape of the receiving member (5) perpendicular to the longitudinal direction and the cross-sectional shape of the column member (4) perpendicular to the longitudinal direction are the same shape and of the same size.

4. The support structure for equipment according to any one of claims 1 to 3, wherein the receiving member (5) is fastened to the column member (4) by a bolt (14) made of FRP.

5. The column member (4) has an L-shaped cross-section, comprising a first plate-like portion (6) and a second plate-like portion (7) rising from one end edge of the first plate-like portion (6). The support structure for equipment according to any one of claims 1 to 3, wherein the receiving member (5) is fixed in surface contact with the surface opposite to the side of the first plate-shaped portion (6) of the column member (4) on which the second plate-shaped portion (7) rises.

6. The support structure for equipment according to any one of claims 1 to 3, wherein the column member (4) is fixed to the wall surface (2) with a ceramic anchor (13).

7. The equipment support structure according to any one of claims 1 to 3, wherein an equipment holding member (16) for holding the equipment (3) is inserted into the edge of the receiving member (5).

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