JP2004324230A - Panel cover for covering the side and bottom of a structure and its installation method - Google Patents

Abstract

An object of the present invention is to provide a panel cover which can improve the anticorrosion property and the landscape of structures such as bridges and piers, and can be used as a permanent scaffold at the time of inspection and repair.
A panel cover covering a side surface and a lower surface of a structure in a planar shape, wherein an outer skin and an inner skin made of a thin metal plate having anticorrosion properties are opposed to each other in parallel, and a filler is filled between the two skins. The panel A is formed integrally with a convex joint at one end and a concave joint at the other end, and the convex joint and the concave joint of the panel are fitted and joined to form a planar panel cover. A panel cover in which a plurality of columns of longitudinal beams arranged in the direction crossing the joint of the cover and the inside near the joint of each panel are fixed, and the longitudinal beams are connected to the structure by supporting members arranged at appropriate intervals. is there.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is applied to new or existing bridge structures and structures such as piers installed at the bottom of the water, to prevent these structures from being corroded, improve the landscape, and provide a permanent scaffold for inspection and repair. The present invention also relates to a structure and an installation method of a panel cover that covers side surfaces and a lower surface of a structure that can be formed.
[0002]
[Prior art]
Structures installed outdoors are susceptible to corrosion because they are always exposed to solar radiation, wind and rain, and especially piers supported by piles on the sea floor and bridges installed in coastal areas are subject to severe corrosive environment due to flying salt. . In addition, there are places where the corrosive environment due to exhaust gas or the like is severe even in bridges in cities with a large traffic volume.
For this reason, steel bridges have traditionally been subjected to advanced painting specifications and anticorrosion measures using weather-resistant steel have been applied to the main girder and cross girder of the bridge structure (hereinafter, bridge body). . However, advanced coating specifications increase initial costs and maintenance costs such as repainting.
On the other hand, in recent years, the importance of landscapes has been emphasized for bridges in urban areas and sightseeing spots in harmony with the natural environment, and the side and bottom surfaces of bridges such as main girder and cross girder are covered with decorative panels. Is increasing. Since this decorative panel covers the bridge body, it also has an anticorrosion effect to block the outside atmosphere.However, each panel is made of a metal plate of the required thickness to ensure rigidity that can mainly withstand wind loads as a flat plate. Used and divided into relatively small panels. In addition, the base material for fixing the divided panels with screws etc. also needs rigidity and fine arrangement, the total weight of steel material is large, and each construction cost of material, processing and mounting is large and uneconomical structure ing. In addition, when installed on an existing bridge, the load increment may be so large that it cannot be accommodated in the marginal strength.
To solve these problems, JP-A-2000-129475 discloses an anticorrosion structure in which a side surface and a lower surface of a structure such as a bridge are covered with a sheet material. This anticorrosion structure is provided with a flexible and airtight sheet material stretched on the outer surface of a structure composed of a plurality of I-beam materials or similar members or steel pipes, and has an internal airtight structure. is there. The sheet material is expanded by the air pressure supplied to the enclosed internal space to maintain its shape.
Japanese Patent Publication No. 9-500698 discloses a building structure in which a metallic tubular space frame is covered with a reinforced plastic housing outer shell for the purpose of corrosion prevention and aesthetics.
On the other hand, piers installed on the sea floor are exposed to seawater directly or as splashes on supporting piles and superstructures, so that the corrosive conditions are extremely severe. However, since the paint deteriorates over time, it is necessary to periodically change the paint. Therefore, recently, a metal-lined anticorrosion method has been adopted in which a corrosion-resistant metal sheet such as stainless steel or titanium is wound around a pile or a frame member to cover it. For example, Japanese Patent Application Laid-Open No. H10-175076 discloses a method in which a thin metal sheet having corrosion resistance such as stainless steel or Monel is closely adhered to the periphery of a pile of an offshore structure by indirect seam welding.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-129475 [Patent Document 2]
Japanese Unexamined Patent Publication No. 9-500698
[Problems to be solved by the invention]
The bridge structures disclosed in Japanese Patent Application Laid-Open Nos. 2000-129475 and 9-500698, in which the side and lower surfaces of the structure are covered with sheet materials, have the following problems. Was.
Japanese Patent Application Laid-Open No. 2000-129475 discloses that an internal space covered with a sheet is made airtight in order to maintain the shape of a sheet material, but it is very difficult to airtightly cover a bridge body. In particular, the end of the main girder is congested with the connection with the substructure, the drainage / fallover prevention device, the auxiliary pipe, and the like, and it is extremely difficult to make the structure airtight, and high construction cost and construction time are required. In addition, there is also a problem in securing airtightness in places that are susceptible to vibrations and shocks by passing vehicles.If the airtightness is partially damaged and the airtightness is impaired, the shape can not be maintained and the bridge The covered sheet may be significantly deformed, which may worsen the landscape.
In addition, when applied to a large bridge, the internal space is wide, so that a large blower needs to be operated to secure the internal pressure, and there is also a problem that equipment costs and operation costs are high.
Japanese Unexamined Patent Application Publication No. 9-500698 discloses a structure in which an elongated space frame member is connected to a lower surface of a building structure, which is covered with an aerodynamically shaped housing outer shell. Since the material used for the shell is plastic (GRP), there is a problem in durability due to aging.
In addition, when a structure such as a bridge is covered with a sheet material or a housing outer shell as described above, if the sheet is thin, dew condensation occurs easily due to a temperature change, and there is a problem in anticorrosion. On the other hand, in the case of the pier, the use of the above-described conventional metal-lined anticorrosion can prevent the offshore structure from being maintained for a very long time without any maintenance. However, when applied to a superstructure of a framed structure composed of a horizontal material, a vertical material, and a diagonal material, it is difficult to apply a corrosion-resistant metal lining particularly to a point portion of a TKY joint.
In addition, these piers, bridges, and other structures require large-scale scaffolds for regular and irregular inspections and repairs, and assembling and disassembling the scaffolds required a great deal of cost and work time.
[0005]
The present invention provides a panel cover that can improve the anticorrosion and landscape of structures such as bridges and structures such as piers installed in places with severe corrosive environments, and can be used as a permanent scaffold for inspection and repair. It is intended to do so.
[0006]
[Means to solve the problem]
In order to solve the above-mentioned problems of the prior art, the panel cover of the present invention has the following configuration.
A panel cover that covers the side and lower surfaces of the structure in a planar shape, with the outer and inner skins made of a thin metal plate having anticorrosion properties facing in parallel, and filling the gap between the two outer skins to form an integral body A convex joint is formed at one end of the panel A and a concave joint is formed at the other end, and the convex joint and the concave joint of the panel are fitted and joined to form a planar panel cover. A structure in which a plurality of rows of longitudinal beams arranged in the direction crossing the inside are fixed to the inside near the joint portion of each panel, and the longitudinal beams are connected to the structure by supporting members arranged at appropriate intervals. Is a panel cover that covers the side and lower surfaces of the panel.
[0007]
The panel constituting the panel cover is a panel B in which an inner skin is formed into an angled rib and a filler is filled between both outer skins to form a panel B, and a joint is provided at an end rib, and the joint is formed with a packing material and an angled shape. A planar panel cover can also be formed by joining using a cover. Since the panel B has high rigidity, it is advantageous when the panel B is used as a panel cover that also serves as a scaffold.
It is desirable that the outer skin of the panel be a thin plate made of titanium or highly corrosion-resistant stainless steel.
[0008]
The panel cover that covers the lower surface may be a panel cover that also serves as a scaffold if the panel strength, the longitudinal beams, and the supporting material have a strength that can be used as a scaffold.
INDUSTRIAL APPLICABILITY The panel cover of the present invention can be applied as a panel cover for covering a lower surface and side surfaces of a pier superstructure supported on a main girder of a bridge or a water bottom by a pile.
[0009]
Further, the panel cover installation method of the present invention is characterized in that, on a work stage provided at one end of the installation range, (1) the joined portion of the lifted panel is brought into contact with the joined portion of the front panel, and the joined portion of the panel is joined. A step of fixing and extending the inside of the vicinity of the joint between the plurality of rows of longitudinal beams arranged in the transverse direction and each panel, and (2) support for slidably supporting the longitudinal beams to which the panels are fixed with respect to the structure. (3) moving the extended panel forward,
After the installation of the planar panel cover is completed over the entire lower surface of the structure, the worker walks on the panel cover and fixes the support material to the structure, and then the side panel from the upper side of the structure. The lower end of the side panel is joined to the side edge of the lower panel cover, and the upper end of the side panel is fixed to the side of the structure.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view in which panel covers according to the present invention are installed on both lower and side surfaces of a bridge, and FIG. 2 is a side view taken along the line AA of FIG.
Concave joints 3 and convex joints, in which panels 2 long in the width direction and short in the bridge axis direction are formed at both ends in the short direction, on the lower surface of the bridge body composed of an I-beam main girder 8 or the like of the bridge structure. 4 and a vertical beam 5 is arranged at an interval in a direction (bridge axis direction) crossing the panel joint, and the joint between the vertical beam 5 and each panel 2 is fixed to a fixture 6 (hereinafter, referred to as “ The vertical beams 5 fixed to the panel 2 are fixed to the cross beams 7 arranged at appropriate intervals in the orthogonal direction, and the cross beams 7 are supported on the lower flange 9 of the main girder 8 of the bridge. The lower panel cover 1 is supported by a material (clamp) 10 and covers the lower surface of the bridge body. On the side of the bridge body, a panel 2 has an upper end fixed to the ground covering of a road shoulder of the bridge, a lower end joined to an end of the panel 2 on the lower surface, and an intermediate part supported at one end by the bridge structure. The side panel cover 11 is supported by the frame.
[0011]
<Panel>
The panel 2 used in the present invention has a rectangular planar shape and has joint ends in the short side direction.
As shown in FIG. 3, each panel 2 has an outer skin 12 and an inner skin 13 made of a thin metal plate having anticorrosion properties, which are opposed to each other in parallel, and a filler 14 is filled between the two outer skins to form one end of a sandwich panel. A flat type panel 15 (hereinafter, referred to as "panel A") having a convex joint 4 on one side and a concave joint 3 on the other end, and a thin metal plate having anticorrosion properties as shown in FIG. A flat outer skin 12 and an inner skin 16 having ribs formed in a chevron shape at appropriate intervals are opposed to each other, and a joining portion is provided at an end rib of a panel integrally formed by filling a filler 14 between both skins. There is an angled panel type panel 18 (hereinafter, referred to as “panel B”) that joins the joint using a packing material 17 and an angled portion. Since the panel B has high rigidity, it is advantageous to use it as a scaffold panel.
[0012]
The inner and outer skins 12, 13, and 16 constituting the panel 2 are made of a thin metal having corrosion resistance, such as a corrosion-resistant metal steel plate, a plated steel plate, a synthetic resin-coated steel plate, or a coated steel plate. In particular, if titanium or high-grade stainless steel is used as the outer skin 12, the durability can be further enhanced.
The filler 14 to be filled in the outer and inner shells 12, 13 and 16 of the panel 2 is made of a synthetic resin foam such as isocyanurate, urethane resin, phenol resin or the like having heat insulation and fire resistance, rock wool or these. A glass fiber mixed and dispersed is used.
As shown in FIGS. 3 and 4, the joint end of the panel 2 is formed such that the inner and outer ends of the outer and inner skins 12 and 13 are bent inward into a U-shape and embedded in the filler 14, as shown in FIGS. , 4 and a packing material 17 is provided on the concave joint 3 side. In the panel B, as shown in FIGS. 5 and 6, a chevron is used as a joint end, a protrusion 19 is provided at a lower portion on one end, and a step 20 corresponding to the protrusion 19 is provided at a lower portion on the other end. An inner skin 16 is extended so as to surround the top, and a packing material 17 is interposed between the joining ends.
As the panel 2, a product commercially available from Nippon Steel Sheet Co., Ltd. under the registered trademark Isoband (Panel A) or the registered trademark Isodach (Panel B) can be used as a wall material or a roof material of a building. In these products, a polyester resin or a fluoro resin and a color steel plate reinforced with glass fiber are used for the zinc alloy-plated steel plate as the inner and outer skins 12, 13 and 16, and a polyurethane foam, a polyisocyanurate foam or a rock It is a sandwich panel using wool. In this sandwich panel, the filler 14 has excellent performance in heat insulation and fire resistance, and products of various colors are provided.
[0013]
<Fixing the panel>
Each panel 2 is fixed to the inside of the panel by vertical beams 5 arranged at appropriate intervals in the direction crossing the joint to form a planar panel, and the vertical beams 5 to which the planar panels are fixed are directly or via horizontal beams 6. It is fixed to a member of the structure by the support member 10.
FIGS. 4 and 7 show a vertical beam 5 and a fixture A which are fixed across the joint portion of the panel A. The lip channel steel is used as the vertical beam 5, and the concave and convex joint ends 3 and 4 are fitted. A hat-shaped fixing tool A that wraps the vertical beam 5 is disposed on the left and right sides of the panel joint, and the flange of the fixing tool A and the panel inner surface side are fixed by bolt joining. In addition, it is better to provide a reinforcing plate on the panel surface over the projection surface of the fixture A.
[0014]
FIG. 8 shows a hat-shaped fixture 21 (hereinafter, referred to as a “fixture C”) of the panel B and the vertical beam 5 having an inner surface formed in a mountain shape at appropriate intervals, and is provided at a vertical beam fixing portion at the top of the mountain. Is covered with a reinforcing plate 22 having a shape covering the chevron surface, wraps the vertical beam 5 made of lip channel steel disposed thereon, and bolts the fixing tool C overlapping the chevron to the side surface of the chevron. I have.
[0015]
FIG. 9 shows a fixing portion of the vertical beam 5 to which the panel 2 is fixed and the cross beam 6 orthogonal to the vertical beam 5. A hat-shaped fixing device 23 (hereinafter, referred to as a hat-shaped fixing device A) is shown. The fixtures are referred to as “fixtures B”) in an orthogonal state, and the flanges are bolted together to fix the vertical beams 5 and the horizontal beams 7.
[0016]
FIG. 10 shows a support member 10 for supporting the cross beam 7 to the bridge structure. A U-shaped clamp for holding the lower flange 9 of the main girder 8 of the structure is fixed with a tightening bolt. The connection between the cross beam 7 and the support member 10 is not limited to a direct bolt connection, but may be a connection structure in which a suspension member is suspended from the support member 10 for clamping the left and right of the lower flange 9 of the main girder 8 and fixed to the cross beam 7. Good. When the height of the structure to which the support member 10 is fixed changes, the use of a suspension member whose length can be adjusted makes it possible to easily install the planar panel horizontally.
[0017]
The planar panel covering the lower surface of the structure is arranged with the longitudinal direction of the panel 2 oriented in the width direction of the bridge. However, when the width is several tens of meters, one panel length may not be enough. In this case, as shown in FIG. 11, a rubber expansion joint 24 is fixed to the longitudinal end of the panel, and a connection plate 25 is arranged on the inner surface of the panel and bolted.
FIG. 11A is a joint cross section of the side panel cover 11 and the lower panel cover 1. The rubber expansion joint 24 is interposed between the lower end side surface of the side panel cover 11 and the end of the lower panel cover 1, and is disposed on the inner surface of the corner. The L-shaped connecting plate 26 is arranged and bolted.
[0018]
<Application to jetty>
FIG. 12 shows an embodiment in which the panel covers 1 and 11 of the present invention are applied to the lower surface and side surfaces of a pier superstructure installed on the sea floor. The pier 27 has a steel pipe pile 31 inserted into a leg 28 of a jacket 30 composed of a leg 28 and a brace 29 installed on the sea floor, and is cast and supported in the seabed ground. The main girder 8 and the cross girder 7 of the section steel are assembled in a grid, and a concrete floor slab 332 is installed.
The panel cover 1 installed on the lower surface of the pier 27 uses a panel B in which the inner surface side of the panel is formed into a mountain shape at appropriate intervals to increase the rigidity so as to prevent corrosion of the pier upper part and also serve as a permanent scaffold.
[0019]
FIG. 13 is a front view in which the panel B is fixed to the upper main girder, and the vertical beam 5 made of lip channel steel crossing the top of the angled panel includes the joint of the panel B by the fixing tool C. The panel is fixed to the side of the chevron. The vertical beam 5 to which the panel is fixed is suspended and supported by a supporting member 10 clamped by a fastening bolt to an I-shaped steel lower flange 9 of a main girder 8 of a pier superstructure via a suspending member 33.
[0020]
14 and 15 are a plan view and a side view in which the metal lining 34 of the leg 28 of the jacket 30 constituting the pier 27 and the lower panel cover 1 of the present invention are joined. Since pier piles and leg materials located in the tidal zone and the seawater splash zone are exposed to extremely severe corrosive environment, recently, a metal lining 34 of highly corrosion-resistant metal sheet such as titanium or high-grade stainless steel is adopted in this part. Have been. The metal lining 34 has an upper end portion spread in a flange shape and is in close contact with the lower panel cover 1 of the present invention by means of an adhesive, an adhesive, a screw, or the like. The panel inner end 35 and the outer periphery of the leg 28, which are cut out around the leg material in a circular shape, are sealed with a caulking material 36 or the like.
When installing the panel cover 1 on a pier superstructure constructed of steel pipe truss, the vertical beam 5 to which the panel 2 is fixed is welded and fixed to the steel pipe truss member via the cross beam 7 and the suspension member 33.
[0021]
<How to install the panel cover>
According to the method of installing the panel cover on the lower surface and the side surface of the structure, a temporary scaffold can be provided below the structure to assemble and install the panel. However, if the following installation method is adopted, a large-scale temporary scaffold is not required, and the panel cover can be efficiently installed.
In this installation method, as shown in FIG. 16, a work stage 37 is provided at one end (for example, a pier or abutment) of the installation area, and the panel 2 on the ground or on the barge that has been transported is hung on a structure while being joined. The panel cover 1 is lowered and moved forward to install the panel cover 1 on the lower surface of the structure.
(1) The joined portion of the raised panel 2 is abutted against the rear end joined portion of the front panel 2, and the longitudinal beam 5 is fixed inside both panels to extend the joint.
(2) The vertical beam 5 to which the panel 2 is fixed is connected to a support member 10 that supports the structure directly or via a horizontal beam 7 so as to be slidable with respect to the structure. If the lower flange 9 of the main girder 8 of the structure is available, the support member 10 can grip the lower flange 9 of the main girder 8 with a clamp with the tightening bolts loosened as shown in FIG. Good. Further, a guide rail may be attached to the structure, and a traveling roller provided on the support member 10 connected to the vertical beam 5 or the horizontal beam 7 of the panel may travel along the guide rail.
(3) To move the joined and extended panel 2 forward, the front end of the panel 2 is pulled by a traction tool 38 such as a winch, or the rear part of the panel 2 is pushed and moved.
The steps (1) to (3) are repeated to install the panel cover 1 on the entire lower surface of the structure. When the installation of the lower panel cover 1 is completed, the worker fixes the support member 10 to the structure by, for example, tightening a tightening bolt of a clamp while walking on the lower panel cover 1. Next, the lower end of the side panel cover 11 is joined to the side end of the lower panel cover 1 while lowering the panel 2 from the upper side of the structure, and the upper end of the side panel cover 11 is fixed to the side of the structure. The installation of the panel covers 1 and 11 that cover the lower surface and the side surface of the object is completed.
[0022]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, since the side surface and lower surface of a structure are covered with the sandwich panel which has the heat insulation property which consists of a thin metal outer skin and a filler inside and outside, it has the following effects.
(1) The main girder, cross girder and attached members of the structure are shielded from corrosive environment, and the structure in the internal space is protected from corrosion for a long time without dew condensation. Can be improved.
(2) When the outer skin of the panel is made of a thin plate of titanium or high corrosion-resistant stainless steel, the durability of the panel can be further improved.
(3) The lower panel cover, which covers the lower surface of the structure in a planar manner, can be used as a scaffold for panel strength, vertical beams and supporting materials, etc. In addition to corrosion prevention and landscape improvement, permanent inspection and repair It can also be used as a scaffold.
(4) When the panel cover is applied to a bridge structure, it is possible to reduce the amount of thermal expansion and contraction of the bridge body because it is insulated by blocking direct sunlight and wind and rain, thereby reducing the cost and extending the life of the bearing and expansion joint device. Can be planned. In the case of a rigid-frame bridge or pier structure in which a pier and a main girder are rigidly connected, the temperature stress of members can be reduced, leading to cost reduction.
(5) When the panel cover is applied to the superstructure of a pier supported by piles, it is exposed to a severe corrosive environment by being closely bonded to the metal lining covering the tidal zone and splash zone such as piles and jacket legs. The anticorrosion performance of the entire pier can be further improved.
(6) The method of installing the panel cover of the present invention on the lower surface and the side surface of the structure is as follows: a small work stage is provided at one end of the installation area, and the panel is hung and joined to the structure while being lifted and joined. Since the panel cover is moved and the panel cover is installed on the lower surface of the structure, a large-scale temporary scaffold is not required, and the panel cover can be efficiently installed in a plane.
[Brief description of the drawings]
FIG. 1 is a front view in which panel covers according to the present invention are installed on both lower and side surfaces of a bridge. FIG. 2 is a side view of the same (viewed along arrow AA).
FIG. 3 is a longitudinal sectional view of panel A (flat type) used in the present invention. FIG. 4 is a side view of a joint portion of panel A. FIG. FIG. 6 is a side view of a joint portion of panel B. FIG. 7 is a perspective view of fixture A for panel joining. FIG. 8 is a perspective view of fixing panel B and a vertical beam using fixture C. FIG. 10 is a perspective view of a supporting member (clamp) for gripping a structural I-girder flange. FIG. 11 (a) is a joining example of a panel longitudinal end. (B) Joint between lower surface panel and side panel [Figure 12] Figure Front view in which panel cover according to the present invention is installed at the lower part and side of pier upper part [Figure 13] Panel B is fixed to pier main girder Front view of FIG. 14 FIG. 15 is a plan view of the mounting portion of the pier superstructure leg and panel B [FIG. 15] Top side view (B-B arrow view)
FIG. 16 is a side view showing an embodiment of a method of installing a panel cover.
1: Lower panel cover 2: Panel 3: Concave joint 4: Convex joint 5: Vertical beam 6: Fixture (fixture A)
7: cross beam 8: main girder 9: lower flange 10: support material 11: side panel cover 12: outer skin 13: inner skin 14: filler 15: flat panel (panel A)
16: inner skin 17 having ribs 17: packing material 18: angled panel type panel (panel B)
19: Protrusion 20: Step 21: Fixture (Fixture C)
22: Reinforcement plate 23: Fixture (fixture B)
24: expansion joint 25: connecting plate 26: L-shaped connecting plate 27: pier 28: leg 29: brace 30: jacket 31: steel pipe pile 32: concrete floor slab 33: hanging material 34: metal lining 35: panel inner end 36 : Caulking material 37: Work stage 38: Towing tool

Claims (6)

A panel cover covering the side and lower surfaces of a bridge structure or a pier superstructure in a planar manner, wherein an outer skin and an inner skin made of a thin metal plate having anticorrosion properties are opposed to each other in parallel, and a filler is filled between the two skins. A convex joint is formed at one end of the panel A that is integrally formed by filling, and a concave joint is formed at the other end, and the convex joint and the concave joint of the panel are fitted and joined to form a planar panel cover. That a plurality of vertical beams arranged in the direction crossing the joint of the panel cover and the inside near the joint of each panel are fixed, and the vertical beams are connected to the structure by supporting members arranged at appropriate intervals. A panel cover that covers the side and bottom surfaces of the featured structure. A panel cover that covers the side and lower surfaces of a bridge structure or a pier superstructure in a planar manner, wherein the inner outer skin has a flat outer skin made of a thin metal plate having anticorrosion properties and ribs formed in a mountain shape at appropriate intervals. Are opposed to each other, a filler is provided between both outer skins, and a filler is provided at the end ribs of the panel B integrally formed.A joint is formed by using a packing material and a chevron cover to form a planar panel cover. A plurality of rows of longitudinal beams arranged in a direction crossing the joint of the panel cover and ribs inside each panel are fixed, and the longitudinal beams are connected to the structure by supporting members arranged at appropriate intervals. A panel cover that covers the side and bottom of the structure. The panel cover for covering the side and lower surfaces of the structure according to claim 1 or 2, wherein the outer skin of the panel is a thin plate made of titanium or stainless steel. The panel cover for covering a side surface and a lower surface of a structure according to any one of claims 1 to 3, wherein the panel cover for covering the lower surface has a strength that can be used as a scaffold. The panel cover, which covers the lower surface of the pier superstructure in a planar manner, is closely attached to a corrosion-resistant corrosion-resistant metal lining material covering the outer periphery of the structure below the panel. A panel cover for covering a side surface and a lower surface of the structure according to any one of the above. In the installation method of the panel cover that also serves as a scaffold that covers the lower surface and side surfaces of the structure, on the work stage provided at one end of the construction area,
(1) The joints of the lifted panels are joined to the joints of the front panels, and a plurality of vertical beams arranged in the direction crossing the panel joints and the inside near the joints of the panels are fixed to extend the joints. (2) a step of connecting a vertical beam to which a panel is fixed to a supporting member that slidably supports the structure, and (3) a step of moving the joined and extended panel forward.
After the installation of the planar panel cover is completed over the entire lower surface of the structure, the worker walks on the panel cover and fixes the support material to the structure, and then the side panel from the upper side of the structure. The lower end of the side panel is joined to the side edge of the lower panel cover while lowering, and the upper end of the side panel is fixed to the side of the structure. Method.

Images