Temporary walkway structure and construction method of the structure

Abstract

To provide a temporary walkway structure that allows construction to continue while ensuring pedestrian access. [Solution] The temporary passage structure 10 is a structure for a temporary passage 4 provided at a construction site that can be used by pedestrians. At the construction site, an excavation section 21 is formed by excavation, and the structure includes a temporary structure 11 built in the excavation section 21 away from the inner wall surface 22A of the excavation section, and a temporary house unit 14 placed inside the temporary structure 11 that becomes a temporary passage 4 that can be used by pedestrians. Construction can continue above and below the temporary house unit 14.

Description

Technical Field

[0001] The present invention relates to a temporary passage structure provided at a construction site and allowing pedestrians to pass through, and a method for constructing a structure using this temporary passage structure.

Background Art

[0002] Conventionally, at a construction site, a temporary passage for pedestrians to pass through has been installed (see Patent Documents 1 and 2). Patent Document 1 shows a protective gantry for protecting pedestrians on a sidewalk from falling objects falling onto the sidewalk facing a construction site. The protective gantry includes a first scaffold structure and a second scaffold structure provided at both positions sandwiching the sidewalk, beam means for connecting the first scaffold structure and the second scaffold structure, a unit frame fixed on the beam means, and a plurality of roof panels laid on the unit frame.

[0003] Patent Document 2 shows a road protective gantry for preventing articles such as materials from falling from a high place at a construction site to a nearby road. The road protective gantry includes a plurality of support legs arranged at intervals in the length direction on both sides of the road, and a protective face portion arranged above the road and supported by the plurality of support legs.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a temporary passage structure and a method for constructing a structure that can continue the construction while ensuring the passage of pedestrians. [Means for solving the problem]

[0006] The inventors of the present invention focused on the fact that, as a temporary passage structure at construction sites, a temporary house unit that forms a temporary passage that pedestrians can pass through is placed inside a temporary structure, and the space above and below the temporary house unit is used as construction space, thereby enabling both pedestrian safety and the continuation of construction even under limited site conditions, leading to the present invention. According to the present invention, by placing a temporary house unit inside a temporary structure built in the excavation area to form a temporary passage, the passage space for pedestrians and the construction area can be clearly demarcated. The first invention's temporary passage structure (for example, the temporary passage structure 10 described later) is a structure for a temporary passage (for example, the temporary passage 4 described later) provided at a construction site and passable by pedestrians, wherein the construction site has an excavated section (for example, the excavated section 21 described later) formed by excavation, and comprises a temporary structure (for example, the temporary structure 11 described later) constructed at the bottom surface (for example, the bottom surface 24 described later) of the excavated section, away from the inner wall surface (for example, the inner wall surface 22A described later) of the excavated section, and a temporary house unit (for example, the temporary house unit 14 described later) placed inside the temporary structure and serving as a temporary passage passable by pedestrians, characterized in that construction can be continued above and below the temporary house unit.

[0007] According to this invention, by forming a temporary walkway with temporary house units, the temporary walkway used by pedestrians is separated from the construction area, thus ensuring pedestrian access while allowing construction to continue in the construction area. Furthermore, since the location of the temporary passageway can be changed simply by rearranging the temporary house units within the temporary structure, switching between temporary passageways is easy, and the construction period can be shortened.

[0008] The temporary passage structure of the second invention further comprises a cantilever beam section (for example, a cantilever beam section 12 described later) extending from the temporary structure to the inner wall surface of the excavation section, and a suspension support section (for example, a suspension support section 13 described later) that suspends and supports the cantilever beam section from the temporary structure, wherein the temporary house unit extends from the temporary structure to the top of the cantilever beam section.

[0009] According to this invention, since the cantilever beam is suspended and supported from a temporary structure, there is no need to provide a frame to support the cantilever beam directly below it, and underground construction can be carried out smoothly.

[0010] The third invention is a method for constructing a structure while ensuring a temporary passageway that can be used by pedestrians, and is characterized by comprising the steps of: excavating the ground (for example, the ground 20 described later) to form an excavated section (for example, the excavated section 21 described later) (for example, step S1 described later); constructing a temporary structure (for example, the temporary structure 11 described later) in the excavated section, away from the inner wall surface (for example, the inner wall surface 22A described later) of the excavated section (for example, step S2 described later); and arranging a temporary house unit (for example, the temporary house unit 14 described later) inside the temporary structure, making the inside of the temporary house unit a temporary passageway that can be used by pedestrians, while continuing construction work above and below the temporary house unit (for example, step S3 described later).

[0011] According to this invention, by forming a temporary walkway with temporary house units, the temporary walkway used by pedestrians is separated from the construction area, thus ensuring pedestrian access while allowing construction to continue in the construction area. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a temporary walkway structure and a method for constructing a structure that allows construction work to continue while ensuring pedestrian access. [Brief explanation of the drawing]

[0013] [Figure 1] This is a side view of a construction site to which a temporary walkway structure according to one embodiment of the present invention is applied. [Figure 2] This is a flowchart showing the procedure for constructing a new structure. [Figure 3] This is a diagram illustrating the construction procedure for a new structure (showing the state after excavating the ground while demolishing the existing structure). [Modes for carrying out the invention]

[0014] This invention relates to a temporary walkway structure and a method for constructing a structure at a construction site while ensuring pedestrian access. In the temporary walkway structure, a temporary house unit is placed inside a temporary structure built in the excavation area to form a temporary walkway, and construction can be continued above and below this temporary walkway, thereby achieving both pedestrian safety and the continuation of construction. One embodiment of the present invention will be described below with reference to the drawings. Figure 1 is a side view of a construction site to which a temporary walkway structure 10 according to one embodiment of the present invention is applied. This construction project involves building a new structure 3 on site 1, where the existing structure 2 (see Figure 3) is located. During the construction period, a temporary walkway 4 will be provided within site 1, allowing pedestrians to pass through.

[0015] A portion of Site 1 has been excavated to form an excavated section 21 by excavating the ground 20. The areas on either side of the excavated section 21 are designated as Area A and Area B. The inner wall surface of the excavated section 21 on the Area A side is designated as inner wall surface 22A, and the inner wall surface on the Area B side is designated as inner wall surface 22B. Retaining members 23 are provided on inner wall surfaces 22A and 22B. A portion of the bottom surface 24 of the excavation section 21 remains, at a position away from the inner wall surface 22A, as an existing structure (island frame) 6, which is part of the existing structure 2. Between this existing structure 6 and the inner wall surface 22B of the excavation section 21, a new structure 5, which is part of the new structure 3, is constructed.

[0016] The temporary passage structure 10 of this embodiment includes a temporary structure (island base) 11 constructed on top of an existing structure 6, a cantilever beam portion (island bridge) 12 extending from the temporary structure 11 to the inner wall surface 22A of the excavation section 21, a suspension support portion 13 that suspends and supports the cantilever beam portion 12 from the temporary structure 11, and a temporary house unit 14 that is disposed inside the temporary structure 11, inside the new structure 5, and on top of the cantilever beam portion 12 and serves as a temporary passage 4 through which pedestrians can pass.

[0017] Since the temporary structure 11 is constructed on top of the existing structure 6, it is away from the inner wall surface 22A and adjacent to the new structure 5. The existing structure 6 is reinforced with a reinforcing member 15 to resist the loads and moments imposed by the temporary structure 11, the cantilever beam portion 12, and the suspension support portion 13. The temporary house unit 14 is box-shaped with an opening formed on its side surface and extends from area A, over the cantilever beam portion 12, inside the temporary structure 11, and inside the new structure 5 to area B. As a result, pedestrians can move between area A and area B through the temporary passage 4 inside the temporary house unit 14. Also, construction can continue above and below the temporary house unit 14.

[0018] Hereinafter, a method for constructing a new structure 3 while ensuring a temporary passage through which pedestrians can pass will be described while referring to the flowchart of FIG. 2. In step S1, as shown in FIG. 3, after driving retaining materials 23 outside the existing structure 2, the ground 2o is excavated while disassembling the existing structure 2 to form an excavation section 21. When disassembling the existing structure 2, a part of the existing structure 2 is left intact to serve as the existing structure 6.

[0019] In step S2, as shown in FIG. 1, a new structure 5 is constructed on a part of the bottom surface 24 of the excavation section 21. Further, the inside of the existing structure 6 is reinforced with a reinforcing member 15, and the temporary structure 11, the cantilever beam portion 12, and the suspension support portion 13 are constructed on top of this existing structure 6. In step S3, temporary house units 14 are placed inside the temporary structure 11, inside the new structure 5, and on the cantilever beam section 12, creating a temporary passageway 4 through which pedestrians can pass, while construction of the new structure 3 continues above and below the temporary house units 14.

[0020] This embodiment provides the following effects. (1) By forming a temporary walkway 4 with the temporary house unit 14, the temporary walkway 4 used by pedestrians is separated from the construction area, allowing construction to continue in the construction area while ensuring pedestrian access. This allows construction to continue using the space above and below the temporary walkway while ensuring safe passage for pedestrians, thereby shortening the construction period. Furthermore, since the position of the temporary passageway 4 can be changed simply by rearranging the temporary house units 14 within the temporary structure 11, switching the temporary passageway 4 is easy, allowing for flexible adaptation to changes in the construction plan and shortening the construction period. As described above, the temporary passageway structure 10 of the present invention is not merely the installation of a temporary passageway 4, but is based on a new construction planning concept that separates and coexists in three dimensions the securing of pedestrian movement and the continuation of construction work. (2) Since the cantilever beam section 12 is suspended and supported from the temporary structure 11, there is no need to provide a frame to support the cantilever beam section 12 directly below it, and underground construction can be carried out smoothly.

[0021] Furthermore, the present invention is not limited to the embodiments described above, and any modifications, improvements, etc., that can achieve the objectives of the present invention are included within the scope of the present invention. For example, in the embodiment described above, the existing structure 6 was left intact when the existing structure 2 was demolished, and the temporary structure 11 was constructed on top of this existing structure 6. However, the invention is not limited to this, and the temporary structure 11 may also be constructed directly on the bottom surface 24 of the excavated section 21. Furthermore, in the above-described embodiment, the cantilever beam portion 12 was supported from above by the suspension support portion 13, but the invention is not limited to this, and the cantilever beam portion 12 may also be supported from below. Furthermore, if the construction site is located within a train station or in an urban area, the temporary housing unit can be made soundproof or dustproof depending on the working environment at the construction site. [Explanation of Symbols]

[0022] 1…Site 2…Existing structure 3…New structure 4…Temporary walkway 5…New structure 6…Existing structure 10...Temporary passageway structure 11...Temporary structural element 12...Cantilever beam section 13...Suspension support section 14...Temporary house unit 15…Reinforcement member 20...Ground 21...Excavation area 22A, 22B...Inner wall surface of the excavation area 23... Retaining wall material 24... Bottom of the excavation area

Claims

1. A structure for a temporary walkway installed at a construction site that is accessible to pedestrians, At the aforementioned construction site, an excavated area was formed by the excavation. A temporary structure constructed in the excavated area, away from the inner wall surface of the excavated area, The system includes a temporary house unit which is placed inside the temporary structure and serves as a temporary passageway accessible to pedestrians, A temporary passageway structure characterized in that construction can be continued above and below the aforementioned temporary house unit.

2. The structure further comprises a cantilever beam extending from the temporary structure to the inner wall surface of the excavation section, and a suspension support section that suspends and supports the cantilever beam from the temporary structure. The temporary passageway structure according to claim 1, characterized in that the temporary house unit extends from the temporary structure to the cantilever beam portion.

3. A method of constructing a structure while ensuring a temporary passage that can be used by pedestrians, The process of excavating the ground to form the excavated area, The process of constructing a temporary structure on the bottom surface of the excavated section, away from the inner wall surface of the excavated section, A method for constructing a structure, characterized by comprising the steps of: arranging a temporary house unit inside the temporary structure, creating a temporary passage through which pedestrians can pass, and continuing construction work above and below the temporary house unit.

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