Protective panel and floor slab replacement method

Abstract

To provide a method capable of easily inspecting a wider range of a bridge, especially a wider range in the bridge axial direction (longitudinal direction), and of inexpensively and safely installing a protection panel and replacing a floor slab in a short period of time.SOLUTION: A protection panel covers a lower part and a side part of a bridge, and includes a floor panel attached to a girder of the bridge and serving as a passage part for a worker, and a side panel arranged in a height direction from an end part in a bridge width direction of the floor panel. The floor panel has an end part in the bridge width direction arranged outside the bridge width direction relative to the side part of the bridge. In a space surrounded by the bridge, the floor panel, and the side panel, an inspection passage arranged above the floor panel along the side part of the bridge and a ladder vertically connecting the floor panel and the inspection passage are provided, and a roof covering between an upper end of the side panel and an upper end of the side part of the bridge is further provided.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a protective panel and a deck replacement method. [Background technology]

[0002] As inspection passageways for bridges, for example, configurations described in Patent Documents 1, 2 and 3 are known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7064335 [Patent Document 2] Patent No. 7237131 [Patent Document 3] Patent No. 7350535 Summary of the Invention [Problem to be solved by the invention]

[0004] The configuration described in Patent Document 1 protects the bridge and allows inspection of the underside and sides of the bridge. However, it is difficult to inspect the upper end of the bridge's side. Furthermore, when replacing the deck during bridge repair work, work scaffolding must be set up outside the bridge, but the scaffolding provided in Patent Document 1 is insufficient in height and width.

[0005] Furthermore, the configuration of Patent Document 2 enables work to be performed at higher altitudes. However, the scaffolding itself needs to be deployed, which requires a mobile scaffolding, resulting in a complex and expensive structure.

[0006] Furthermore, the configuration of Patent Document 3 allows inspection work to be carried out at higher altitudes. However, this scaffolding does not provide enough work space for replacing deck slabs, and is therefore inadequate in functionality.

[0007] Conventional deck replacement work involves the installation of temporary scaffolding on the bridge during construction, and then the removal of this temporary scaffolding after the deck replacement work is complete. Protective panels that protect the bridge and allow inspection of the bridge and its sides must be installed after the scaffolding has been removed.

[0008] The present invention has been made in consideration of the above, and aims to provide a method that enables easy inspection of a wider area of ​​a bridge, particularly a wider area in the bridge axis direction (longitudinal direction), and that enables protective panel installation and deck replacement to be performed at low cost, safely, and in a short period of time. [Means for solving the problem]

[0009] The protective panel of the present invention is a protective panel that covers the underside and sides of a bridge, and comprises: a floor panel that is attached to the girders of the bridge and serves as a walkway for workers; and a side panel that is arranged in the height direction from the end of the floor panel in the bridge width direction, the end of the floor panel in the bridge width direction being arranged further outward in the bridge width direction than the side of the bridge, and within the space surrounded by the bridge, the floor panel, and the side panel, there is provided an inspection walkway that is arranged above the floor panel along the side of the bridge, and a ladder that connects the floor panel and the inspection walkway in the vertical direction, and the protective panel further comprises a roof that covers the area between the upper end of the side panel and the side of the bridge.

[0010] The deck replacement method of the present invention involves attaching floor panels, which will serve as walkways for workers, to the girders of a bridge so that they protrude outward in the bridge width direction beyond the sides of the bridge, attaching side panels along the height direction from the ends of the floor panels in the bridge width direction, and within the space surrounded by the bridge, the floor panels, and the side panels, placing an inspection walkway above the floor panels along the sides of the bridge and a ladder connecting the floor panels and the inspection walkway in the vertical direction, replacing the deck of the bridge using the inspection walkway as a foothold, and after replacing the deck, attaching a roof that covers the area between the upper ends of the side panels and the upper surface of the sides of the bridge. [Effects of the Invention]

[0011] The present invention provides a method that allows for easy inspection of a wider area of ​​a bridge, particularly a wider area in the bridge axis direction (longitudinal direction), and enables protective panel installation and deck replacement to be performed at low cost, safely, and in a short period of time. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a cross-sectional view showing an example of a protection panel according to this embodiment. [Figure 2] FIG. 2 is an enlarged view of a part of FIG. 1 (the roof and its vicinity). [Figure 3] FIG. 3 is a diagram showing a state in which the roof is opened and closed (closed) by the opening and closing mechanism. [Figure 4] FIG. 4 is a diagram showing a state in which the roof is opened and closed (released) by the opening and closing mechanism. [Figure 5] FIG. 5 is a diagram showing the state in which the roof is opened and closed (closed) by the opening and closing mechanism. [Figure 6] FIG. 6 is a diagram showing a state in which the roof is opened and closed (released) by the opening and closing mechanism. [Figure 7] FIG. 7 is a diagram showing an example of a movable panel. [Figure 8] FIG. 8 is a diagram illustrating an example of the fixed panel. [Figure 9] FIG. 9 is a diagram showing the configuration along the cross section AA in FIG. [Figure 10] FIG. 10 is a diagram showing the configuration along the cross section BB in FIG. [Figure 11] FIG. 11 is a diagram showing a configuration along the CC cross section in FIG. [Figure 12] FIG. 12 is a flowchart showing an example of a deck slab replacement method according to this embodiment. [Figure 13] FIG. 13 is a process diagram that schematically shows step S20 of the deck slab replacement method. [Figure 14] FIG. 14 is a process diagram that schematically shows step S30 of the deck slab replacement method. [Figure 15]FIG. 15 is a process diagram that schematically shows step S40 of the deck slab replacement method. [Figure 16] FIG. 16 is a process diagram that schematically shows step S50 of the deck slab replacement method. [Figure 17] FIG. 17 is a cross-sectional view showing a protection panel according to a modified example. [Figure 18] FIG. 18 is a cross-sectional view showing a protection panel according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the protective panel and deck replacement method according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to these embodiments. Furthermore, the components in the following embodiments include those that are easily replaceable by a person skilled in the art, or those that are substantially identical.

[0014] Fig. 1 is a cross-sectional view showing an example of a protective panel 100 according to this embodiment. Fig. 1 shows a cross section taken along a plane perpendicular to the bridge axis direction. As shown in Fig. 1, the protective panel 100 covers the lower and side portions of the bridge BG.

[0015] Here, the bridge BG will be explained. The bridge BG has a deck 101, a passageway 102, girders 103, and a wall parapet 104. The deck 101 is laid across, for example, in one direction. Hereinafter, the direction in which the deck 101 is laid across will be referred to as the bridge axis direction D1. Furthermore, the direction perpendicular to the bridge axis direction D1 and the up-down direction D3 along the vertical axis will be referred to as the width direction D2. The passageway 102 is the part where vehicles, pedestrians, etc. pass through. The passageway 102 is placed on the deck 101.

[0016] The girder members 103 are provided on the lower part 101a of the deck 101 (hereinafter referred to as the bridge lower part), and are arranged in a row in the width direction D2. The girder members 103 are formed into plates, for example, from steel, and are arranged along the bridge axis direction D1 of the deck slab 101. The balustrades 104 are arranged on both ends of the walkway section 102 in the width direction D2. In this embodiment, the outer surface portions of the balustrades 104 in the width direction D2 become the sides 101b of the bridge BG (hereinafter referred to as the "bridge sides").

[0017] The protective panel 100 comprises a floor panel 10 and a side panel 20. The floor panel 10 is disposed below the bridge lower portion 101a to protect the lower portion 101a. The floor panel 10 is, for example, flat and disposed along the deck 101. The floor panels 10 are configured with a plurality of floor panels 10 arranged in the bridge axis direction D1 and the width direction D2, covering the bridge lower portion 101a. The floor panels 10 may also be disposed along a horizontal plane (a plane parallel to the bridge axis direction D1 and the width direction D2). The floor panel 10 is disposed so that the end 11 in the width direction D2 protrudes outward in the width direction D2 beyond the bridge side portion 101b. The floor panel 10 is attached to the girder 103 via a support member 105 and an attachment member 106.

[0018] The side panels 20 are arranged along the height direction from the end 11 of the floor panel 10 in the width direction D2. While FIG. 1 illustrates an example in which the side panel 20 is arranged on one side in the width direction D2, the side panel 20 is also arranged on the other side in the width direction D2. The side panels 20 are arranged in the width direction D2 with a sufficient gap from the bridge side 101b to allow workers to pass through. The upper end 21 of the side panel 20 is arranged at approximately the same height as the upper surface 104a of the wall parapet 104 of the bridge BG. In the example of FIG. 1, the upper end 21 of the side panel 20 is shown arranged slightly lower than the upper end of the wall parapet 104. The side panels 20 are attached to the girder 103 via horizontal supports 107 and 108. The horizontal supports 107 and 108 are reinforced by reinforcing members 109.

[0019] An inspection walkway 30 and a ladder 40 are provided in the space K surrounded by the bridge BG, floor panel 10, and side panel 20. The inspection walkway 30 is arranged above the floor panel 10 along the wall parapet 104. The inspection walkway 30 can be used as a work platform when workers inspect the bridge side 101b, the upper surface 104a of the wall parapet 104, etc. The ladder 40 connects the floor panel 10 and the inspection walkway 30 in the vertical direction. The ladder 40 is supported by a vertical support member 110 and fixed to, for example, horizontal supports 107 and 108.

[0020] A roof 50 is provided between the side panel 20 and the wall parapet 104. FIG. 2 is an enlarged view of a portion of FIG. 1 (the roof 50 and its vicinity). The roof 50 is arranged to cover the area between the upper end 21 of the side panel 20 and the bridge side 101b. In this embodiment, the roof 50 is arranged above the inspection walkway 30, and is arranged in a bridging state between the upper end 21 of the side panel 20 and the upper surface 104a of the wall parapet 104. By providing the roof 50, the space K can be protected from falling objects such as splashes of water, rain, and snow.

[0021] The roof 50 is supported by a support portion 110a of the vertical support member 110 and a support portion 111a of the vertical support member 111. The vertical support member 110 is supported by horizontal supports 107 and .

[0022] The roof 50 is arranged so as to slope downward from the parapet 104 to the side panel 20. Therefore, when moisture such as rainwater adheres to the roof 50, the moisture will flow outward in the width direction D2 along the slope of the roof 50. In addition, a gap concealing material 70 is provided on the upper surface 104a of the parapet 104. The gap concealing material 70 extends in the bridge axis direction D1 and is arranged so as to cover the gap between the roof 50 and the parapet 104. By providing the gap concealing material 70, it is possible to prevent rainwater from entering between the roof 50 and the parapet 104.

[0023] The roof 50 has roof panels 51 and support parts 52. In the roof 50, the roof panels 51 and support parts 52 constitute an opening and closing mechanism 60. The opening and closing mechanism 60 opens and closes the roof 50. Figures 3 to 6 are diagrams showing the state in which the roof 50 is opened and closed by the opening and closing mechanism 60. Figures 3 and 4 are cross-sectional views, and Figures 5 and 6 are views seen from above. When the roof 50 is open, the space K is in communication with the outside through the open part of the roof 50.

[0024] A plurality of roof panels 51 are provided in the thickness direction, i.e., the vertical direction D3. The roof panels 51 include movable panels 51A and 51B and a fixed panel 51C. The movable panels 51A and 51B are provided so as to be able to slide in the width direction D2. The fixed panel 51C is fixed to a support part 52. The roof panels 51 are arranged in the order of movable panel 51A, movable panel 51B, and fixed panel 51C from top to bottom in the vertical direction D3. Each roof panel 51 is arranged in a state inclined downward from the wall parapet 104 toward the side panel 20, corresponding to the inclination of the roof 50.

[0025] As shown in Fig. 3, when the roof 50 is closed, the movable panels 51A, 51B are fixed to the support parts 52 by fixing members 56. Fixing the movable panels 51A, 51B to the support parts 52 by the fixing members 56 prevents the movable panels 51A, 51B from moving in the tilt direction of the roof 50, i.e., outward in the width direction D2. Removing the fixing members 56 makes the movable panels 51A, 51B slidable. Therefore, when the roof 50 is to be opened, the fixing members 56 are removed and then the movable panels 51A, 51B are slid.

[0026] 3 and 4, the fixed panel 51C is fixed to the support portion 52 by a fixing member 54. The fixed panel 51C remains fixed to the support portion 52 whether the roof 50 is open or closed.

[0027] Fig. 7 is a diagram showing an example of movable panels 51A and 51B. Fig. 8 is a diagram showing an example of fixed panel 51C. Fig. 9 is a diagram showing a configuration along cross section AA in Fig. 7. Fig. 10 is a diagram showing a configuration along cross section BB in Fig. 8.

[0028] As shown in Figures 7 and 9, the movable panels 51A, 51B are, for example, rectangular plates. The movable panels 51A, 51B are arranged so that the bridge axis direction D1 is the longitudinal direction. The movable panels 51A, 51B have slide mechanisms 51s at both ends in the longitudinal direction. The slide mechanisms 51s are arranged to slide smoothly along guide portions 53.

[0029] The movable panels 51A and 51B have locking portions 55. The locking portions 55 are, for example, rod-shaped and are provided on the upper surface 51p and the lower surface 51q, which are both surfaces of the movable panels 51A and 51B in the thickness direction. The locking portions 55 are not limited to being rod-shaped and may be hollow, for example. In the movable panels 51A and 51B, the locking portion 55a provided on the upper surface 51p is located at the end of the upper surface 51p on the outer side in the width direction D2 (the side from the balustrade 104 toward the side panel 20). In the movable panels 51A and 51B, the locking portion 55b provided on the lower surface 51q is located at the end of the lower surface 51q on the inner side in the width direction D2 (the side from the side panel 20 toward the balustrade 104).

[0030] As shown in FIG. 4, when the roof 50 is in an open state, the locking portion 55 is locked to the other roof panels 51. Specifically, the locking portion 55b provided on the movable panel 51B is locked to the inner end of the fixed panel 51C in the width direction D2. The locking portion 55a provided on the movable panel 51B is locked to the outer end of the movable panel 51A in the width direction D2. Furthermore, the locking portion 55b provided on the movable panel 51A is locked to the inner end of the movable panel 51B in the width direction D2. By locking the movable panels 51A and 51B to the other roof panels 51, it is possible to prevent the roof panel 51 from falling off when the roof 50 is opened or when the roof 50 is in an open state. The locking portion 55a provided on the movable panel 51A may be omitted.

[0031] 8 and 10, the fixed panel 51C is, for example, a rectangular plate in a plan view. The fixed panel 51C is arranged so that the bridge axis direction D1 is the longitudinal direction. Frame members 58 are attached to both end faces of the fixed panel 51C in the short side direction.

[0032] 3 to 6, the support portions 52 support the roof panel 51. The support portions 52 are arranged on both longitudinal sides of the roof panel 51. FIG. 11 is a diagram showing the configuration along the CC cross section in FIG. 6. FIG. 11 shows an example of a support portion 52 arranged on one side in the longitudinal direction of the roof panel 51. Note that a similar explanation can be given for the support portion 52 arranged on the other side in the longitudinal direction.

[0033] The support portion 52 has a wall portion 61, a top panel portion 62, a first base portion 63, a second base portion 64, and a third base portion 65. The support portion 52 has a shape that extends along both longitudinal edges of the roof panel 51. The direction along both longitudinal edges of the roof panel 51 is the longitudinal direction of the support portion 52. The support portion 52 guides the movable panels 51A, 51B along the longitudinal direction. In the following, when describing the configuration of the support portion 52, the longitudinal direction of the support portion 52 will be referred to as the guide direction, and the direction perpendicular to the guide direction in a plan view will be referred to as the lateral direction.

[0034] The wall portion 61 is a flat plate-like member that extends in the guide direction and is disposed along the vertical direction. The top plate portion 62 is disposed on the upper end of the wall portion 61.

[0035] The first base portion 63 is disposed below the top plate portion 62. The first base portion 63 is disposed so as to protrude laterally from the top plate portion 62. The first base portion 63 is provided with upward-facing ribs 63a and 63b. The ribs 63a and 63b extend along the guide direction. A pair of the ribs 63a and 63b are disposed on each side of the first base portion 63 in the lateral direction, spaced apart from each other. With the wall portion 61 as the center, the rib portion 63a is disposed at both lateral ends, and the rib portion 63b is disposed inside the rib portion 63a in the lateral direction. As shown in FIGS. 5 and 11 , when the roof 50 is closed, the movable panel 51A can be fixed by disposing the fixing member 56 so as to penetrate from below the portion of the first base portion 63 between the rib portions 63a and 63b.

[0036] A slide mechanism 51s for the movable panel 51A is disposed in the area surrounded by the wall 61, the top panel 62, and the first base 63. This area serves as a guide 53A that guides the movable panel 51A. The guide 53A serves as a gutter 66 that drains water such as rain and splashes.

[0037] The second base portion 64 is disposed below the first base portion 63. The second base portion 64 is disposed so as to protrude on both lateral sides relative to the top plate portion 62. As shown in FIG. 5, the second base portion 64 is disposed so as to protrude on one side in the guide direction (outside in the width direction D2) relative to the first base portion 63. The lateral dimension of the second base portion 64 is substantially the same as the lateral dimension of the first base portion 63. Like the first base portion 63, the second base portion 64 is provided with upward-facing rib portions 64a, 64b. The rib portions 64a, 64b extend along the guide direction. The rib portions 64a, 64b are provided in pairs on both lateral sides of the second base portion 64 with a gap between them. With the wall portion 61 as the center, the rib portion 64a is disposed at both lateral ends, and the rib portion 64b is disposed inside the rib portion 64a in the lateral direction. As shown in Figures 5 and 11, when the roof 50 is closed, the movable panel 51B can be fixed by positioning a fixing member 56 so that it penetrates from the underside the portion of the second base portion 64 that is sandwiched between the rib portion 64a and the rib portion 64b.

[0038] A slide mechanism 51s for movable panel 51B is disposed in the area surrounded by wall 61, first base 63, and second base 64. This area serves as guide 53B that guides movable panel 51B. Guide 53B serves as a gutter 67 that drains water such as rain and splashes.

[0039] The third base portion 65 is disposed below the second base portion 64. The lateral dimension of the third base portion 65 is approximately the same as that of the top plate portion 62. As shown in FIG. 5, the third base portion 65 is disposed so that one side in the guide direction (the outer side in the width direction D2) protrudes relative to the second base portion 64. The fixed panel 51C is fixed to the third base portion 65 by the fixing member 54. The fixing member 54 is disposed so as to penetrate the third base portion 65 from below.

[0040] Fixed panel 51C is arranged in portion 53 surrounded by wall portion 61, second base portion 64, and third base portion 65. This portion serves as storage portion 53C that stores fixed panel 51C. Storage portion 53C serves as gutter portion 68 that drains water such as rain and splashes. Note that a configuration similar to gutter portions 66, 67, and 68 may be provided, for example, at the end of roof 50 in bridge axis direction D1.

[0041] Next, a deck replacement method for replacing the deck 101 of a bridge BG using the protective panel 100 configured as described above will be described. Fig. 12 is a flowchart showing an example of the deck replacement method according to this embodiment. Figs. 13 to 16 are process diagrams that schematically show the steps of the deck replacement method.

[0042] As shown in Figure 12, the deck replacement method of this embodiment includes a floor panel installation process S10, a side panel installation process S20, an inspection path / ladder installation process S30, a deck replacement process S40, and a roof installation process S50.

[0043] In the floor panel installation step S10, as shown in FIG. 13, the floor panel 10, which will be the area where workers pass, is attached to the girder 103 of the bridge BG so as to protrude in the width direction D2 beyond the bridge side portion 101b.

[0044] In the side panel installation step S20, as shown in FIG. 13, the side panel 20 is attached from the end of the floor panel 10 in the width direction D2 along the height direction.

[0045] In the inspection path and ladder installation step S30, an inspection path 30 and a ladder 40 are placed in the space K surrounded by the bridge BG, the floor panel 10, and the side panel 20, as shown in FIG.

[0046] In the deck replacement process S40, as shown in FIG. 15, the deck 101 of the bridge BG is replaced using the inspection passage 30 as a work scaffold.

[0047] In the roof installation step S50, as shown in FIG. 16, after replacing the deck slab 101, a roof 50 is attached to cover the space between the upper end 21 of the side panel 20 and the bridge side 101b.

[0048] As described above, the protective panel 100 according to this embodiment is a protective panel 100 that covers the bridge lower portion 101a and the bridge side portion 101b, and comprises: a floor panel 10 that is attached to the girder of the bridge BG and serves as a passageway for workers; and a side panel 20 that is arranged in the height direction from the end of the floor panel 10 in the width direction D2, and the end of the floor panel 10 in the width direction D2 is arranged outside the bridge side portion 101b in the width direction D2, and within the space K surrounded by the bridge BG, the floor panel 10, and the side panel 20, there are provided an inspection passage 30 that is arranged above the floor panel 10 along the bridge side portion 101b, and a ladder 40 that connects the floor panel 10 and the inspection passage 30 in the vertical direction, and further comprises a roof 50 that covers the area between the upper end of the side panel 20 and the bridge side portion 101b.

[0049] According to this configuration, a space K is formed between the bridge BG and the side panel 20, and an inspection passage 30 and a ladder 40 are provided in the space K, making it possible to easily inspect a wider area of ​​the bridge side 101b. In addition, by covering the space between the upper end 21 of the side panel 20 and the bridge side 101b with a roof 50, it is possible to prevent the intrusion of rainwater and the like, and to appropriately protect the bridge lower part 101a and the bridge side 101b.

[0050] In the protective panel 100 according to this embodiment, the roof 50 has an opening and closing mechanism 60 .

[0051] According to this configuration, the roof 50 can be easily opened and closed by the opening and closing mechanism 60, so that inspection work can be easily carried out over a wide area, including the upper surface of the upper end of the bridge side portion 101b.

[0052] In the protective panel 100 of this embodiment, the roof 50 has a roof panel 51 and a support portion 52 that supports the roof panel 51, and the support portion 52 has a guide portion 53 that guides the roof panel 51 in the width direction D2, and the roof panel 51 is guided by the guide portion 53 and can slide in the width direction D2.

[0053] According to this configuration, the roof 50 can be opened and closed by sliding the roof panel 51, so that the opening and closing operation can be easily performed.

[0054] In the protective panel 100 of this embodiment, multiple roof panels 51 are arranged in the thickness direction, and of the multiple roof panels 51, the fixed panel 51C at the bottom in the thickness direction is fixed to the support part 52, and the other roof panels 51, which are movable panels 51A and 51B, are arranged to be slidable along the guide direction of the support part 52, and each roof panel 51 has an engaging part 55 that engages with adjacent roof panels 51.

[0055] This configuration can prevent the roof panel 51 from protruding outward from the side panel 20 in the width direction D2 or from falling off.

[0056] In the protective panel 100 according to this embodiment, the support portion 52 has groove portions 66, 67, and 68 provided along the guide direction.

[0057] According to this configuration, rainwater on the roof 50 can be quickly removed by the gutters 66, 67, and 68, and therefore the intrusion of rainwater into the protective panel 100 can be prevented.

[0058] In the protective panel 100 according to this embodiment, the roof 50 has gutters 66, 67, and 68.

[0059] According to this configuration, rainwater on the roof 50 can be quickly removed by the gutters 66, 67, and 68, and therefore the intrusion of rainwater into the protective panel 100 can be prevented.

[0060] In the protective panel 100 according to this embodiment, the gutters 66, 67, and 68 are aligned along the width direction D2 of the roof 50.

[0061] According to this configuration, the gutter sections 66, 67, and 68 are aligned along the width direction D2 of the roof 50, so that rainwater on the roof 50 can be quickly removed along the same direction as the guide direction of the support section 52, thereby preventing rainwater from entering the protective panel 100.

[0062] In the protective panel 100 of this embodiment, the roof 50 has a roof panel 51 and a support portion 52 arranged at the end of the roof panel 51 in the bridge axis direction D1, and the support portion 52 has gutter portions 66, 67, and 68 provided along the width direction D2.

[0063] With this configuration, rainwater on the roof 50 consisting of the roof panel 51 and the support parts 52 at both ends thereof can be quickly removed by the gutters 66, 67, 68, thereby preventing rainwater from entering the protective panel 100.

[0064] In the protective panel 100 according to this embodiment, the roof 50 has a gap hiding material 70 between the bridge side portions 101b and the bridge side portions 101b.

[0065] According to this configuration, the gap covering material 70 can prevent rainwater from entering between the roof 50 and the bridge side portion 101b.

[0066] In addition, the deck replacement method according to this embodiment involves attaching floor panels 10, which serve as workers' passageways, to the girder members 103 of the bridge BG so that they extend outward in the width direction D2 beyond the bridge side portions 101b, attaching side panels 20 along the height direction from the ends of the floor panels 10 in the width direction D2, and within the space surrounded by the bridge BG, floor panels 10, and side panels 20, placing an inspection passage 30 above the floor panels 10 along the bridge side portions 101b and a ladder 40 connecting the floor panels 10 and the inspection passage 30 in the vertical direction, using the inspection passage 30 as a work scaffold to replace the deck 101 of the bridge BG, and after replacing the deck, attaching a roof 50 that covers the area between the upper ends of the side panels 20 and the upper surface of the side ends of the bridge BG.

[0067] According to this configuration, the deck 101 of the bridge BG is replaced using the inspection passage 30 installed in the space K surrounded by the bridge BG, the floor panel 10, and the side panel 20 as a work scaffold, which makes it easy to replace the deck 101. After the deck 101 is replaced, it can be used as the inspection passage 30 for inspecting the bridge side 101b.

[0068] The technical scope of the present invention is not limited to the above-described embodiment, and appropriate modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the roof 50 of the protective panel 100 is configured to open and close, but the present invention is not limited to this configuration.

[0069] FIG. 17 is a cross-sectional view showing a protective panel 100A according to a modified example. In the protective panel 100A shown in FIG. 17, the roof 50A may be configured not to open or close. The roof 50A may be configured to have a light-transmitting portion 57 that transmits light. The light-transmitting portion 57 may be made of a plate material such as glass or acrylic. The light-transmitting portion 57 may be made of a film-like material that can transmit light. The light-transmitting portion 57 may be provided on the roof 50 (for example, the roof panel 51). By providing the light-transmitting portion 57, the inspection work environment can be improved when the roofs 50, 50A are closed.

[0070] Furthermore, in the above embodiment, the roof 50 of the protective panel 100 is described as being configured to open and close by sliding the roof panel 51, but this configuration is not limiting. FIG. 18 is a cross-sectional view showing a protective panel 100B according to a modified example. In the protective panel 100B shown in FIG. 18, the roof 50B may be configured to open and close by rotating around one end in the width direction D2 (for example, the end on the side of the side panel 20) as an axis. Note that the roof 50B may also be configured to open and close by rotating around the other end in the width direction D2 as an axis. Furthermore, the roof 50B may be provided with a gutter 69 for draining water such as rainwater, for example, at an end in the bridge axis direction D1, as in the above embodiment. [Explanation of symbols]

[0071] D1...bridge axis direction, D2...width direction, D3...vertical direction, K...space, BG...bridge, 10...floor panel, 11...edge, 20...side panel, 21...upper edge, 30...inspection passage, 40...ladder, 50, 50A, 50B...roof, 51...roof panel, 51A, 51B...movable panel, 51C...fixed panel, 51p, 104a...upper surface, 51q...lower surface, 51s...sliding mechanism, 52, 110a, 111a...support part, 53, 53A, 53B...guide part, 53C...storage part, 54, 56...fixing member, 55, 55a, 55b...locking part, 57...translucent part , 58...frame member, 60...opening / closing mechanism, 61...wall portion, 62...top plate portion, 63...first base portion, 63a, 63b, 64a, 64b...rib portion, 64...second base portion, 65...third base portion, 66, 67, 68, 69...gutter portion, 100, 100A, 100B...protective panel, 101...deck, 101a...lower portion, lower portion of bridge, 101b...side portion, side of bridge, 102...passage portion, 103...girder member, 104...wall parapet, 105...support member, 106...mounting member, 107, 108...horizontal support member, 109...reinforcing member, 110, 111...vertical support member

Claims

1. A protective panel covering the underside and sides of a bridge, A floor panel attached to the girder of the bridge and serving as a passageway for workers; a side panel arranged in the height direction from the end of the floor panel in the bridge width direction; Equipped with the end portion of the floor panel in the bridge width direction is disposed on the outer side of the side portion of the bridge in the bridge width direction, Within the space surrounded by the bridge, the floor panels, and the side panels, there are provided an inspection passageway arranged above the floor panels along the side of the bridge, and a ladder connecting the floor panels and the inspection passageway in the vertical direction, a roof covering the area between the top end of the side panel and the side of the bridge; Protective panel.

2. The roof has an opening and closing mechanism The protective panel of claim 1 .

3. The roof includes a roof panel and a support portion that supports the roof panel, The support portion has a guide portion that guides the roof panel in the bridge width direction, The roof panel is guided by the guide portion and is slidable in the bridge width direction. The protective panel of claim 2 .

4. The roof panel is arranged in a thickness direction in a plurality of ways, Among the plurality of roof panels, the lowest roof panel in the thickness direction is fixed to the support part, and the other roof panels are arranged to be slidable along the guide direction of the support part, Each of the roof panels has a locking portion that locks with the adjacent roof panel. The protective panel of claim 3 .

5. The support portion has a groove provided along the guiding direction. The protective panel of claim 3 .

6. The roof has a gutter The protective panel of claim 1 .

7. The gutter is arranged along the bridge width direction of the roof. The protective panel of claim 6.

8. The roof includes roof panels and supports disposed at ends of the roof panels in the bridge axis direction, The support member has the gutter provided along the bridge width direction. The protective panel of claim 7.

9. The roof has a gap hiding material between the side of the bridge and the side of the bridge. The protective panel of claim 1 .

10. The roof has a light-transmitting portion The protective panel of claim 1 .

11. A floor panel that serves as a passageway for workers is attached to the girder of the bridge so as to protrude outward in the bridge width direction beyond the side of the bridge, attaching side panels along the height direction from the end portions of the floor panels in the bridge width direction; Within a space surrounded by the bridge, the floor panel, and the side panel, an inspection passageway is arranged above the floor panel along the side of the bridge, and a ladder is arranged to vertically connect the floor panel and the inspection passageway, Replace the deck of the bridge using the inspection passage as a scaffolding; After replacing the deck, a roof is installed to cover the area between the upper end of the side panel and the upper surface of the side end of the bridge. How to replace the floor slab.

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