Passageway structure

Abstract

To enable passage even if a support structure collapses due to earthquake.SOLUTION: A passage structure includes a support structure 10, a passageway P1 formed on the support structure 10, a pair of support members 20 provided on both sides in the longitudinal direction of the passageway P1, and a floor member 40 embedded in the support structure 10 below the passageway P1 in a state of being connected to the pair of support members 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a passage structure. [Background technology]

[0002] BACKGROUND ART A suspension bridge having a deck made of precast concrete is known (see, for example, Patent Document 1).

[0003] Further, underground structures such as subway tunnels buried in soft ground are known (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-8417 [Patent Document 2] Japanese Patent Application Publication No. 10-131209 Summary of the Invention [Problem to be solved by the invention]

[0005] It is possible to build a passageway on a supporting structure such as an embankment. However, in this case, if the supporting structure collapses during an earthquake, the passageway may become impassable.

[0006] In consideration of the above, the present invention aims to enable passage even if the supporting structure collapses during an earthquake. [Means for solving the problem]

[0007] According to the first aspect The passage structure comprises a support structure, a passage formed on the support structure, a pair of support members provided on both longitudinal sides of the passage, and a floor member buried in the support structure below the passage while connected to the pair of support members.

[0008] First aspect According to the passage structure of the present invention, a passage is formed on a support structure, and a pair of support members are provided on both sides of the passage in the longitudinal direction.

[0009] Here, the floor members are connected to a pair of support members and buried in the support structure below the passageway, so that if the support structure and the passageway collapse during an earthquake, the floor members supported by the pair of support members will emerge.

[0010] Therefore, even if the support structure collapses during an earthquake, people can still pass through on the floor members.

[0011] According to the second aspect The passage structure comprises a support structure, a floor member placed on the support structure and forming a passage, and a pair of support members provided on both sides of the passage in the longitudinal direction and to which the floor member is connected.

[0012] Second aspect According to the passage structure of the present invention, a floor member is provided on the support structure. The floor member forms a passage. Furthermore, a pair of support members is provided on both sides of the passage in the longitudinal direction.

[0013] Here, the floor members are connected to a pair of support members, so that even if the support structure collapses during an earthquake, the floor members are supported by the pair of support members.

[0014] Therefore, even if the support structure collapses during an earthquake, people can still pass through the floor members.

[0015] According to the third aspect The passage structure is First aspect or According to the second aspect The passageway structure includes a pair of main cables that are suspended across a pair of the support members, and the floor members are connected to the pair of main cables via hanging members.

[0016] Third aspectAccording to the passage structure described above, a pair of main cables are strung across a pair of support members. Floor members are connected to the pair of main cables via suspension members. As a result, when the support structure collapses during an earthquake, the floor members are supported by the pair of support members via the pair of main cables and suspension members, forming a suspension bridge.

[0017] Therefore, even if the support structure collapses, it is possible to allow passage on the floor member with a simple configuration.

[0018] According to the fourth aspect The passage structure is According to the third aspect The passage structure includes a protective case that is embedded in the support structure and that houses the main cable.

[0019] Fourth aspect According to the passage structure of the present invention, the protective case is embedded in the support structure. By accommodating the main cable in this protective case, deterioration of the main cable can be suppressed.

[0020] According to the fifth aspect The passage structure is First aspect ~ Fourth aspect Any one of pertaining to one In the passageway structure, the support structure has a base formed of at least one of soil, gravel, and crushed stone, and supports the passageway, and the floor member is provided on the base.

[0021] Fifth aspect According to the passage structure of the present invention, the support structure has a base portion that supports the passage. The floor member is embedded in the base portion.

[0022] Here, the base is made of at least one of earth, sand, gravel, and crushed stone. Therefore, there is a possibility that the base will collapse during an earthquake. By providing floor members on this base, even if the support structure collapses during an earthquake, people can still pass through the floor members supported by a pair of support members. [Effects of the Invention]

[0023] As described above, according to the present invention, even if the support structure collapses during an earthquake, it is possible to maintain passage. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a vertical cross-sectional view showing a support structure to which a passage structure according to one embodiment is applied; [Figure 2] FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. [Figure 3] 3 is a plan view of the floor member and a pair of protective cases shown in FIG. 2. FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. [Figure 5] FIG. 2 is a vertical cross-sectional view showing the suspension bridge shown in FIG. 1 in an unfolded state. [Figure 6] FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 5. [Figure 7] FIG. 3 is a cross-sectional view corresponding to FIG. 2, showing a modified example of a passage structure according to one embodiment. [Figure 8] FIG. 2 is a vertical cross-sectional view corresponding to FIG. 1, showing a modified example of a passage structure according to one embodiment. [Figure 9] 9 is a cross-sectional view taken along line 9-9 in FIG. 8. [Figure 10] FIG. 3 is a cross-sectional view corresponding to FIG. 2, showing a modified example of a passage structure according to one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, a passage structure according to one embodiment will be described with reference to the drawings.

[0026] (Support structure) Figure 1 shows a support structure 10 to which the passage structure according to this embodiment is applied. The support structure 10 has a base 12 and a pair of concrete walls 14 (see Figure 2). The base 12 is formed, for example, by embankment.

[0027] As shown in Figure 2, the base 12 extends linearly in a predetermined direction and has a trapezoidal cross section. Both side surfaces 12S of the base 12 are inclined surfaces (slopes). Both side surfaces 12S of the base 12 are covered by a pair of concrete walls (retaining walls) 14. The pair of concrete walls 14 prevent the base 12 from collapsing. A passage P1 is formed on the support structure 10.

[0028] The cross section of the base 12 is not limited to a trapezoidal shape, but may be rectangular or the like. The base 12 may be formed of at least one of earth, sand, gravel, and crushed stone. The concrete wall 14 may be omitted as appropriate.

[0029] (aisle) 1, the passage P1 is, for example, a sidewalk or a road, and extends in a predetermined direction along the support structure 10. The passage P1 is formed, for example, by laying concrete, stone paving, or the like on the upper surface of the base 12 of the support structure 10. A pair of support members 20 is provided on both sides of the passage P1 in the longitudinal direction.

[0030] (support member) The pair of support members 20 form the foundation of the suspension bridge 30, which will be described later, and are arranged at a distance in the longitudinal direction of the passage P1. Each support member 20 is a reinforced concrete structure, and is embedded in the base 12 of the support structure 10. The suspension bridge 30 is connected to the pair of support members 20.

[0031] (suspension bridge) The suspension bridge 30 is buried inside the base 12 of the support structure 10, and as shown in Figures 5 and 6, it appears when the support structure 10 collapses during an earthquake, forming a backup passage (evacuation passage) P2.

[0032] Below, we will first explain the configuration of the suspension bridge 30 in the expanded state (expanded state) when it emerges from the support structure 10, and then explain the configuration of the suspension bridge 30 in the stored state (buried state) when it is buried in the support structure 10.

[0033] (Suspension bridge deployed) As shown in FIG. 5, the suspension bridge 30 includes a pair of main cables 32, a plurality of suspension members 34, and a plurality of floor members 40, and is spanned across a pair of support members 20.

[0034] The pair of main cables 32 are formed from wire ropes, PC steel wires, PC steel rods, etc., and are stretched across (strung) in a bent state between the pair of support members 20. The pair of main cables 32 also support a plurality of floor members 40 (described later) and function as handrails. The pair of main cables 32 are connected to a plurality of floor members 40 via a plurality of hanging members 34.

[0035] The pair of main cables 32 may be stretched linearly across the pair of support members 20 without being bent.

[0036] The multiple hanging members 34 are hanger cables and are suspended from the pair of main cables 32. The multiple hanging members 34 are arranged at intervals in the longitudinal direction of the pair of main cables 32. A multiple number of floor members 40 are suspended from these hanging members 34.

[0037] In addition, the multiple hanging members 34 gradually become longer from the center to the ends of the pair of main cables 32 so as to absorb the bending of the pair of main cables 32 and to arrange the multiple floor members 40 in a straight line.

[0038] (Flooring materials) The multiple floor members 40 are formed, for example, from concrete plates (concrete floor slabs). The multiple floor members 40 are formed in a rectangular shape in plan view, and are arranged at intervals in the longitudinal direction of the pair of main cables 32. These floor members 40 form the floor of the suspension bridge 30, i.e., the floor of the reserve passage P2. Adjacent floor members 40 are connected by a pair of floor cables 42.

[0039] As shown in Figure 6, the pair of floor cables 42 extend in the longitudinal direction (construction direction) of the suspension bridge 30 and are arranged below the pair of main cables 32. The pair of floor cables 42 are also buried in both widthwise ends of the multiple floor members 40. In other words, the pair of floor cables 42 penetrates both widthwise ends of the multiple floor members 40 in the longitudinal direction of the suspension bridge 30. Adjacent floor members 40 are connected by this pair of floor cables 42.

[0040] (Suspension bridge in stowed position) Next, the stored state (buried state) of the suspension bridge 30 will be described.

[0041] As shown in Figure 1, a pair of main cables 32 of a suspension bridge 30 are buried in the base 12 below a passage P1, stretched across a pair of support members 20. The pair of main cables 32 are also arranged linearly along the passage P1.

[0042] If the main cables 32 in the bent state (the state shown in FIG. 5 ) are extended in a straight line, the overall length of the main cables 32 will be longer in plan view. Therefore, in this embodiment, both ends of each of the main cables 32 extended in a straight line are slidably passed through through holes 22 formed in the pair of support members 20. This allows the main cables 32 to be buried in the base 12 in a straight line.

[0043] In addition, locking members 24 such as wedges are attached to both ends of each main cable 32. The locking members 24 are arranged at a distance from the locking surfaces 20A of the support members 20, and as shown in Figure 5, if the floor members 40 fall due to the collapse of the support structure 10, they will be locked by the locking surfaces 20A of the support members 20. In this way, the pair of main cables 32 are stretched across the pair of support members 20.

[0044] The locking surface 20A of the support member 20 is the surface facing outward (the side opposite the floor member 40). In this embodiment, a locking member 24 is provided at each end of the main cable 32. However, it is also possible to fix one end of the main cable 32 to the support member 20 and attach the locking member 24 only to the other end of the main cable 32. The main cable 32 is not limited to being straight, and can also be buried in the base 12 in a curved state, for example.

[0045] As shown in Figure 3, multiple floor members 40 are embedded in the base 12 (see Figure 2) in a linear arrangement along the pair of main cables 32. Furthermore, the gaps between adjacent floor members 40 are filled with a filler 44 such as mortar or sealant. The floor cables 42 exposed in the gaps between the adjacent floor members 40 are embedded in this filler 44. This prevents deterioration of the floor cables 42.

[0046] The filler 44 may be provided as needed and may be omitted as appropriate.

[0047] As shown in Fig. 4, a pair of protective cases 36 are attached to the upper surfaces of the plurality of floor cables 42. The pair of protective cases 36 are formed, for example, from concrete or resin, and are arranged across the plurality of floor members 40. The pair of protective cases 36 are embedded in the base 12 together with the plurality of floor members 40.

[0048] The pair of protective cases 36 are formed with a C-shaped cross section that is open downward, and an accommodation chamber 36R is formed inside each protective case 36. The accommodation chamber 36R accommodates the main cable 32 and a plurality of hanging members 34. The main cable 32 is accommodated in the accommodation chamber 36R along the longitudinal direction of the protective case 36, and the hanging members 34 are accommodated in the accommodation chamber 36R in a folded state.

[0049] The pair of protective cases 36 are respectively joined to the upper surface of each floor member 40 at both widthwise ends via a sealing material 38 such as grout. By storing the pair of main cables 32 and the multiple hanging members 34 in the pair of protective cases 36, deterioration of the pair of main cables 32 and the multiple hanging members 34 is suppressed.

[0050] The pair of protective cases 36 may be provided as needed and may be omitted as appropriate.

[0051] (action) Next, the operation of this embodiment will be described.

[0052] 1, according to this embodiment, a passage P1 is formed on the base 12 of the support structure 10. A pair of support members 20 is provided on both sides of the passage P1 in the longitudinal direction.

[0053] Here, a suspension bridge 30 is buried in the base 12 of the support structure 10. The suspension bridge 30 has a pair of main cables 32, a plurality of suspension members 34 (see FIG. 2), and a plurality of floor members 40. The pair of main cables 32 are buried in the base 12 below the passage P1, suspended across a pair of support members 20. The plurality of floor members 40 are also buried in the base 12 below the passage P1, connected to the pair of main cables 32 via a plurality of suspension members 34.

[0054] 5 and 6, if the support structure 10 were to collapse (fall) during an earthquake, the suspension bridge 30 would emerge from the base 12, forming a backup passage P2. Specifically, if the support structure 10 collapses, the multiple floor members 40 embedded in the base 12 would fall, and the pair of main cables 32 would be strung across the pair of support members 20.

[0055] At this time, the filler material 44 (see FIG. 3) filled in the gaps between the adjacent floor members 40 breaks, allowing the adjacent floor members 40 to move relative to each other. Additionally, the multiple floor members 40 separate from the pair of protective cases 36, and the hanging materials 34 housed within the protective cases 36 unfold downward.

[0056] As a result, the plurality of floor members 40 are supported by the pair of support members 20 via the plurality of hanging members 34 and the pair of main cables 32, forming the suspension bridge 30. Therefore, even if the support structure 10 collapses during an earthquake, people can still pass over the plurality of floor members 40 (backup passage P2). In addition, the plurality of floor members 40 prevent, for example, objects installed on the passage P1 from falling.

[0057] As described above, in this embodiment, even if the support structure 10 collapses during an earthquake, it is possible to allow passage on the plurality of floor members 40 (preparatory passage P2) with a simple configuration.

[0058] The floor members 40 are arranged in a row in the longitudinal direction of the passage P1. Adjacent floor members 40 are connected via a pair of floor cables 42. This stabilizes the floor members 40. This makes it easier for people to travel over the floor members 40 (spare passage P2).

[0059] 3, the gap between adjacent floor members 40 is filled with a filler material 44. Parts of the pair of floor cables 42 exposed in the gap between the adjacent floor members 40 are buried in this filler material 44. This prevents deterioration of the pair of floor cables 42.

[0060] 4, a pair of protective cases 36 are embedded in the base 12 of the support structure 10. By storing the pair of main cables 32 and the plurality of hanging members 34 in the pair of protective cases 36, respectively, deterioration of the pair of main cables 32 and the plurality of hanging members 34 is suppressed.

[0061] (Variation) Next, a modification of the above embodiment will be described.

[0062] In the above embodiment, a plurality of floor members 40 are embedded in the base 12 below the passage P1. However, for example, as in a modified example shown in Figure 7, the passage P1 may be formed by a plurality of floor members 40.

[0063] Specifically, the plurality of floor members 40 are embedded in the surface layer of the base 12 with their upper surfaces exposed from the base 12 of the support structure 10. As a result, a passage P1 is formed by the upper surfaces of the plurality of floor members 40. In addition, a pair of protective cases 36 form steps on both sides of the passage P1.

[0064] Here, if the support structure 10 collapses during an earthquake, the suspension bridge 30 appears from the support structure 10 as shown by the two-dot chain line, and a backup passage P2 is formed as in the above embodiment. Therefore, even if the support structure 10 collapses during an earthquake, a simple configuration allows passage over the multiple floor members 40 (backup passage P2).

[0065] In the above embodiment, the suspension bridge 30 is buried in the base 12 of the support structure 10. However, the suspension bridge 30 is not limited to being buried in the base 12 of the support structure 10, and a bridge can also be buried therein.

[0066] For example, in the modified example shown in Figures 8 and 9, a bridge 50 is buried in the base 12 of the support structure 10. The bridge 50 has a pair of girders 52 and a floor member 60. The pair of girders 52 are formed from steel frame members such as H-shaped steel beams and are arranged along the longitudinal direction of the passage P1. Note that the girders 52 are not limited to steel frame construction, and may also be reinforced concrete construction, steel-framed reinforced concrete construction, etc.

[0067] The pair of girders 52 are embedded in the base 12 below the passage P1, with the pair of girders 52 spanning a pair of support members 20 provided on both sides of the passage P1 in the longitudinal direction. A floor member 60 is supported on the pair of support members 20 via the pair of girders 52.

[0068] The floor members 60 are, for example, reinforced concrete slabs and are provided on a pair of girders 52. The floor members 60 extend in the longitudinal direction of the passage P1 along the pair of girders 52 and span a pair of support members 20. When the support structure 10 collapses during an earthquake, the bridge 50 appears and the upper surfaces of the floor members 60 form a backup passage P2.

[0069] Therefore, in this modified example, similar to the above embodiment, even if the support structure 10 collapses during an earthquake, it is possible to allow passage on the floor member 60 (preparatory passage P2) with a simple configuration.

[0070] In the above embodiment, the pair of support members 20 are embedded in the base 12 of the support structure 10. However, the pair of support members 20 may be exposed from the support structure 10. The pair of support members 20 may be, for example, a crane or the like, or the foundation of a structure surrounding the passage P1 may be used.

[0071] In the above embodiment, the support structure 10 is formed in the shape of a bank. However, the support structure 70 may be formed of a fill or cut ground, as in the modified example shown in Fig. 10. The support structure 70 has a base portion 70A formed of at least one of earth, sand, gravel, and crushed stone.

[0072] The support structure may also be a stone wall, etc. The stone wall has, for example, a base made of at least one of earth, sand, gravel, and crushed stone, and a plurality of piled stones stacked along both sides of the base.

[0073] Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modified examples may be used in appropriate combination, and it goes without saying that the present invention can be implemented in various forms as long as it does not deviate from the gist of the present invention. [Explanation of symbols]

[0074] 10 Support structure 12 Base 20 Support member 32 Main Cable 34 Hanging material 36 Protective Case 40 Flooring 42 Floor Cable 60 Flooring 70 Support structure 70A base P1 aisle

Claims

1. a support structure; a passageway formed on the support structure; a pair of support members provided on both sides of the passage in the longitudinal direction; a floor member that is connected to the pair of support members and is embedded in the support structure under the passage, and that appears when the support structure and the passage collapse to form a reserve passage; A passageway structure comprising:

2. a support structure; a floor member placed on the support structure and having an upper surface forming a passageway; a pair of support members provided on both sides of the passage in the longitudinal direction and to which the floor member is connected; A passageway structure comprising:

3. a pair of main cables stretched across the pair of support members; The floor member is connected to the pair of main cables via a hanging member. The passage structure according to claim 1 or 2.

4. a protective case that is embedded in the support structure and that houses the main cable; The passage structure according to claim 3 .

5. the support structure has a base portion formed of at least one of soil, gravel, and crushed stone, and supports the passageway; The floor member is provided on the base portion. The passage structure according to any one of claims 1 to 4.

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