JP7024130B1 - Filling formwork under the PCa deck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling form under a PCa deck block which can be used repeatedly, is economical, is lightweight, can be easily transported in a narrow work space, and has good work efficiency. SOLUTION: The bridge girder (steel girder 11) placed on the bridge girder (steel girder 11) is bolted to and fixed to the lower surface of the PCa floor slab 12, and between the bridge girder (steel girder 11) under the PCa floor slab and the PCa floor slab 12. In the filling formwork 1 under the PCa floor slab of the filler to be filled, a resin formwork body 2 having an inverted L-shaped cross section having a front plate 20 and a top plate 21 is provided, and the top plate 21 has a PCa floor. A pair of reinforcing ribs (square ribs 22) for connecting the front plate 20 and the top plate 21 are formed on both sides of the notches 21a through which the bolts B to be joined to the plate 12 are inserted. To form each. [Selection diagram] FIG. 4

Description

The present invention relates to a filling formwork under a PCa deck.

Under the PCa floor slab, a space for height adjustment is provided as a margin for adjusting the warp and unevenness of the floor slab, and after the adjustment, the space is filled with filled mortar such as non-shrink mortar. Conventionally, as the formwork (side frame) of this filled mortar, a sole sponge adhered to a bridge girder or the like has been used.

However, since the sole sponge is used as a formwork for the filling mortar in a state where the PCa floor slab is placed on the sole sponge and compressed, it is crushed according to the filling mortar thickness under the PCa floor slab that differs from place to place. It was necessary to select an appropriate sole sponge thickness according to the compression ratio. For this reason, it is necessary to correctly install an appropriate sole sponge part number according to the thickness of the filling mortar that differs from place to place, which is troublesome and has a problem of poor construction efficiency.

In addition, since the sole sponge is left as it is without being removed, it must be installed after the rust preventive coating of the steel girder is completed, and the sole sponge cannot be installed until the rust preventive coating is completed. It was a critical point of. In addition, the durability of the sole sponge to be retained is not taken into consideration, and there is a problem that the sole sponge deteriorates due to ultraviolet rays or the like and peels off, resulting in poor appearance.

In addition, the sole sponge becomes tall at the place where the filling mortar thickness becomes thick, and there is a problem that there is a risk of lying down or protruding when the PCa deck is placed. Further, since the compressibility of the sponge differs from place to place, the shape of the filled mortar cannot be controlled, and there is a problem that the side surface of the filled mortar is not flat. Therefore, a filling form under the PCa deck that can solve these problems has been eagerly desired.

For example, Patent Document 1 discloses that a female screw is embedded in a PCa deck in advance, angle steel is bolted to the female screw, and the female screw is used as a filling formwork (FIG. 6 of the drawing of Patent Document 1). , See Fig. 7 etc.).

However, the filling form described in Patent Document 1 has an adjustment allowance only for the stupid holes made in angle steel, and if the installation accuracy of the PCa deck is not improved, a gap will be created and it will not function as a filling form. There was a problem. In addition, the angle steel used as a filling formwork is not supposed to be removed, and if left untreated, not only the cost will rise, but also the problem that it will be a critical point in the process has not been solved. Since the angle steel is bolted, it can be removed, but the angle steel is heavy and there is a problem that the workability is poor, for example, the worker cannot work alone to remove the angle steel.

Jikkenhei 01-176106 Gazette

Therefore, the present invention has been devised in view of the above-mentioned problems, and its purpose is to be economical because it can be used repeatedly, and to be lightweight and easy to transport in a narrow work space. It is an object of the present invention to provide a filling form under a PCa deck with good efficiency.

The filling formwork under the PCa deck according to claim 1 is fixed by being bolted to the lower surface of the PCa deck placed on the bridge girder, and is filled between the bridge girder under the PCa deck and the PCa deck. It is a filling form under the PCa floor slab of the filler to be made, and includes a resin form body having an inverted L-shaped cross section having a front plate and a top plate, and the top plate has the PCa floor slab. A plurality of notches for inserting bolts to be joined to the above are formed, and a pair of reinforcing ribs connecting the front plate and the top plate are formed on both sides of these notches. It is characterized by.

The filling mold under the PCa floor slab according to claim 2 is the filling mold under the PCa floor slab according to claim 1, and each of the plurality of notches is different from the mold main body. Each of the square tubular fixing jigs is fitted, and these fixing jigs are fixed by being screwed to the bolt.

The filling formwork under the PCa floor slab according to claim 3 is the filling formwork under the PCa floor slab according to claim 1 or 2, and the back surface of the front plate is attached to the longitudinal end of the formwork body. It is characterized in that an L-shaped key material for hooking the rod material is projected.

The filling formwork under the PCa floor slab according to claim 4 is the filling formwork under the PCa floor slab according to any one of claims 1 to 3. It is characterized by being cut out diagonally to form a trapezoidal shape.

The filling formwork under the PCa floor slab according to claim 5 is the filling formwork under the PCa floor slab according to any one of claims 1 to 4, wherein the formwork body is made of transparent or translucent polypropylene. It is characterized by.

The filling formwork under the PCa floor slab according to claim 6 is the filling formwork under the PCa floor slab according to claim 2, wherein the fixing jig is made of vinyl chloride.

According to the inventions according to claims 1 to 6, the filling formwork can be used repeatedly and repeatedly, and the total cost is lower than that of a conventional formwork such as a disposable sole sponge, and the economy is improved. do. Further, according to the inventions according to claims 1 to 6, since the filling formwork is made of resin, it is lighter than the filling formwork made of angle steel described in Patent Document 1, and a plurality of sheets can be stacked at the same time by one person. Since it can be carried by workers, it is extremely easy to carry in a narrow work space, and workability is improved. Moreover, according to the inventions according to claims 1 to 6, since the filling formwork is integrated, the formwork is assembled and installed according to the thickness of the filling material under the PCa deck slab, which differs from place to place. It is extremely easy to do this in a short time, and the construction efficiency is good.

In particular, according to the invention of claim 2, even if the adjustment allowance for bolting to the PCa deck is long, it is not necessary to increase the size of the formwork body and the entire filling formwork, and as a result, the entire filling formwork is required. Can be made compact, further improving portability and workability.

In particular, according to the third aspect of the present invention, the key material of one filling formwork and the key material of another filling formwork adjacent to each other are connected by bridging the bar material in the longitudinal direction of the filling formwork. It is possible to prevent the end portion from opening away from the steel girder.

In particular, according to the invention of claim 4, when a plurality of filling formwork are arranged side by side on both sides of the steel girder, the top plate screwed and fixed to the PCa floor slab is provided with the warp of the PCa floor slab or the steel girder. Even when the floor plate is tilted to follow a bend or bend, it can be installed so as not to interfere with other adjacent top plates.

In particular, according to claim 5, since the mold body is made of transparent or translucent polypropylene, the impact resistance is high, and the filling state of the filler can be visually confirmed from the outside.

In particular, according to claim 6, the fixing member with which a metal material such as a washer or a nut comes into contact can be made of vinyl chloride having high hardness, and can be inexpensive and highly weather resistant.

FIG. 1 shows a state in which a filler is filled between a PCa deck and a steel girder using a filling form under a PCa deck according to an embodiment of the present invention, and the joined state is cut in a direction perpendicular to the bridge axis. It is the whole vertical sectional view shown. FIG. 2 is a partially enlarged cross-sectional view showing an enlarged joint portion between the PCa deck of FIG. 1 and the steel girder. FIG. 3 is a front perspective view of the formwork body and the fixing jig of the filling form according to the first embodiment of the present invention as viewed from the side where the filler is filled. FIG. 4 is a rear perspective view of the formwork body of FIG. 3 as viewed from the opposite side. FIG. 5A is a front view of the same formwork body as viewed along the bridge axis perpendicular direction Y from the side where the filler is filled, and FIG. 5B is the opposite of the same formwork body. It is a rear view seen from the side along the right-angled direction Y of the bridge axis, and FIG. 6 (a) is a left side view of the formwork body of FIG. 5 (a), FIG. 6 (b) is a sectional view taken along line AA of FIG. 5 (c), and FIG. 6 (c) is. FIG. 5 is a cross-sectional view taken along the line BB of FIG. 5 (c). FIG. 7A is a front view of the formwork body of the filling formwork according to the second embodiment as viewed along the bridge axis perpendicular direction Y from the side where the filling material is filled, and FIG. 7B is a front view. , The above-mentioned formwork body is a rear view seen from the opposite side along the bridge axis right angle direction Y, and FIG. 7C is a plan view of the above-mentioned formwork body seen from above along the vertical direction Z. Is.

Hereinafter, an embodiment of a filling form under a PCa deck according to the present invention will be described in detail with reference to the drawings.

<Filling formwork under the PCa deck>
[First Embodiment]
First, with reference to FIGS. 1 to 6, the filling formwork 1 under the PCa deck (hereinafter, also simply referred to as the filling formwork 1) according to the first embodiment of the present invention will be described. FIG. 1 shows a bridge in which the joint between the steel girder and the PCa deck is filled with a filler such as mortar using the filling form 1 under the PCa deck according to the first embodiment of the present invention. It is an overall vertical cross-sectional view cut at an axial angle, and FIG. 2 is a partially enlarged cross-sectional view showing an enlarged joint portion between the steel girder of FIG. 1 and the PCa deck. In the figure, X indicates the bridge axis direction X, Y in the figure indicates the bridge axis perpendicular direction Y, and Z in the figure indicates the vertical direction Z.

As shown in FIGS. 1 and 2, in the filling formwork 1 according to the first embodiment, the PCa deck 12 is placed on the bridge girder made of the steel girder 11 by adjusting the height and the position thereof. It is used as a formwork for filling and joining a filler 13 such as a non-shrink mortar between the two. Further, in the illustrated bridge 10, a wall height column 14 is installed on the ground covering portion 12a of the PCa floor slab 12.

As shown in FIG. 2, the filling form 1 is arranged in parallel on both sides of the steel girder 11 along the bridge axis direction X, and is embedded in the female screw 12b with the end exposed on the lower surface of the PCa deck 12. It is screwed and installed on all screwed screw bolts B. Then, the filler 13 is filled in the gap between the pair of left and right filling formwork 1, 1, the steel girder 11, and the PCa deck 12 on both sides of the steel girder 11 and used. The full screw bolt B is assumed to be a bolt of about M10.

Next, the filling form 1 will be described in detail with reference to FIGS. 3 to 6. FIG. 3 is a front perspective view of the formwork body 2 and the fixing jig 3 of the filling formwork 1 according to the present embodiment as viewed from the side where the filler 13 is filled, and FIG. 4 shows the formwork body 2 It is a rear perspective view seen from the opposite side. Further, FIG. 5A is a front view of the formwork body 2 as viewed from the side where the filler 13 is filled along the direction Y perpendicular to the bridge axis, and FIG. 5B is a front view of the formwork body 2. It is a rear view seen from the opposite side along the right angle direction Y of a bridge axis, and FIG. 5C is a plan view which looked at formwork body 2 from above along the vertical direction Z. 6 (a) is a left side view of the formwork main body 2 of FIG. 5, FIG. 6 (b) is a sectional view taken along line AA of FIG. 5 (c), and FIG. 6 (c) is. FIG. 5 is a cross-sectional view taken along the line BB of FIG. 5 (c).

As shown in FIG. 3, the filling formwork 1 is a polypropylene formwork body 2 in which a plurality of rectangular notches 21a for inserting all the screw bolts B for fixing are formed, and the formwork body. A rectangular tubular fixing jig 3 made of vinyl chloride, which is attached to the notch 21a of 2, is provided.

(Formwork body)
As shown in FIGS. 3, 5, and 6, the formwork main body 2 is mainly composed of a horizontally long rectangular front plate 20 and a trapezoidal top plate 21 orthogonal to the front plate 20. It is a member having an inverted L-shaped cross section, and is transparent or translucent in order to visually check the filling status of the filler such as the non-shrink mortar to be cast. Here, transparent or translucent means that visible light is transmitted to a certain extent and the internal filling state is transmitted through a polypropylene resin plate and can be seen through.

In the illustrated form, the front plate 20 is formed in a horizontally long rectangular shape having a thickness of 10 mm, a height of 150 mm, and a width (length) of 1408 mm.

Further, as shown in FIGS. 3, 4, and 5 (c), the top plate 21 has a horizontally long rectangular shape of 6 mm in thickness × 150 mm in depth (width) × 1408 mm in width (length). The two protruding corners are cut out diagonally to form a trapezoidal shape as a whole. Therefore, the filling formwork 1 has a top plate 21 screwed and fixed to the PCa deck 12 when a plurality of filling formwork 1 are arranged on both sides of the steel girder 11 along the bridge axis direction X. Even when the PCa floor slab 12 and the steel girder 11 are attached so as to be inclined from each other by following the warp or bend of the steel girder 11, they do not interfere with the top plate 21 of another adjacent filling form 1.

Further, in the illustrated top plate 21, three rectangular notches 21a having a width of 50 mm and a length of 120 mm are formed at a pitch of 470 mm in order to insert and fix all the screw bolts B for fixing. ing.

Further, as shown in FIGS. 3 to 6, in the formwork main body 2, a pair of rectangular ribs 22 are formed on both sides of each notch 21a. Similarly, a triangular rib 23 is formed in the center between the notch 21a and the notch 21a. As shown in FIGS. 5 (b) and 5 (c), the triangular ribs 23 are also formed at both ends of the formwork body 2 in the longitudinal direction.

These square ribs 22 and triangular ribs 23 are connected to the front plate 20 and the upper surface plate 21 and are provided so as to be orthogonal to the plate surfaces thereof. Therefore, these square ribs 22 and triangular ribs 23 function as reinforcing ribs that reinforce the intersections between the front plate 20 and the upper surface plate 21 that are orthogonal to each other and prevent buckling.

Further, as shown in FIGS. 5 (b), 5 (c), and 6 (b), a horizontal rib 24 extending in the horizontal direction is formed in the center in the height direction on the back surface of the front plate 20. , Reinforced.

Then, as shown in FIGS. 4, 5 (b), 5 (c), 6 (a), and 6 (c), an L-shape is formed on the back surface of both ends of the front plate 20 in the longitudinal direction. The key material 25 is projected in two stages, upper and lower. The key material 25 is connected to the key material 25 of the filling form 1 by bridging the key material 25 of another adjacent filling form 1 with a short bar S such as round steel, and is connected to the filling form. It has a function of preventing the end portion of 1 in the longitudinal direction from opening apart from the steel girder 11.

(fixing jig)
The fixing jig 3 is a square cylindrical member made of hard vinyl chloride (hardness (share) D65 to 85) having a thickness of 10 mm, and as shown in FIG. 3, has the same width as the notch 21a of the form body 2. W1 = 50 mm and depth D1 = 200 mm are set. Therefore, the position of the filling form 1 can be adjusted within the range of depth D1-20 mm (thickness 10 mm × 2 =) − diameter of all screw bolts B = 10 mm = 170 mm, which exceeds the depth (width) of 150 mm of the top plate 21. It is possible. For this reason, the filling formwork 1 can adjust the position in a much wider range than the adjustment allowance for the stupid holes made in the angle steel described in the background technology, and can absorb the expected construction error. It has become.

As described above, the mold main body 2 is made of polypropylene, and the fixing jig 3 is made of rigid vinyl chloride. However, other resin may be used. However, the filling formwork 1 needs to be able to be used repeatedly and repeatedly, and to have enough strength to withstand the impact when the formwork is attached and detached. Further, since the temperature of the non-shrink mortar used as the filler 13 rises to nearly 70 ° C. due to the hydration reaction depending on the environment of the site, the mold body 2 in contact with the filler 13 can withstand this temperature. Is required. Moreover, the filler 13 often contains a cement component, and the formwork body 2 is required to withstand alkalinity.

Materials that combine these conditions and are inexpensive and highly economical include polyvinyl chloride (PVC: Poly Vinyl Cloride), acrylonitrile butadiene styrene (ABS: Acrylonitrile Butadiene Styrene), polypropylene (PP: Polyepropylene), and the like. General-purpose resin or steel material is assumed. However, assuming that the size of the resin material is about the same as that of the above-mentioned filling form 1, the resin material weighs 3.1 kg for polyvinyl chloride, 2.2 kg for acrylonitrile, butadiene, and styrene, and 2.7 kg for polypropylene. As described in the background technology, the steel material weighs 12.0 kg, and it is difficult to carry a plurality of steel materials in a narrow work space such as a hanging scaffold, and there is a problem that workability is inferior.

On the other hand, polyvinyl chloride, acrylonitrile-butadiene-styrene, and polypropylene are all lightweight, have high strength, and have good workability. However, although acrylonitrile, butadiene, and styrene have high wear resistance, they have a problem that the weather resistance is worse than that of other resins, and the strength and impact resistance of the bonded portion are low.

In addition, although polyvinyl chloride has the advantage of being inexpensive and the hardness of the resin can be set by a plasticizer, it has the problem of being weak against high temperatures and not having high impact resistance, and has low transparency and fills the filling status of the filler 13. There was a problem that the formwork 1 could not be visually recognized from the outside through the formwork body 2.

On the other hand, polypropylene has a merit that although it is inferior in weather resistance, it has high impact resistance, and by making it transparent or translucent, the filling state of the filler 13 can be visually recognized from the outside. Therefore, in the filling formwork 1 according to the present embodiment, the formwork body 2 is made of polypropylene.

However, the fixing jig 3 has a low merit of being translucent or the like because the filling status of the filler 13 can be visually recognized from the outside by the other mold main body 2. Therefore, the fixing jig 3 is made of polyvinyl chloride, which is inexpensive and has high weather resistance, because the metal material such as a washer and a nut comes into contact with the fixing jig 3 so that the hardness can be relatively high in the resin.

[Second Embodiment]
Next, the filling formwork 1'(hereinafter, also simply referred to as a filling formwork 1') under the PCa deck according to the second embodiment of the present invention will be described with reference to FIG. 7. The difference between the filling formwork 1'under the PCa floor slab according to the second embodiment and the filling formwork 1 under the PCa floor slab according to the first embodiment is the width (length) of the front plate and the top plate. Since there are only two points where there are two plurality of rectangular notches 21a for inserting all the screw bolts B, that point will be mainly explained, and the same configuration is given the same reference numeral, and others. The explanation of is omitted.

FIG. 7A is a front view of the formwork body 2'of the filling formwork 1'from the side where the filler 13 is filled along the direction Y perpendicular to the bridge axis, and FIG. 7B is a front view. It is a rear view of the formwork body 2'viewed from the opposite side along the direction Y perpendicular to the bridge axis, and FIG. 7 (c) is a plan view of the formwork body 2'viewed from above along the vertical direction Z. be.

As shown in FIG. 7B, the filling formwork 1'has a polypropylene formwork body 2'in which a plurality of rectangular notches 21a for inserting all the screw bolts B for fixing are formed. , The above-mentioned fixing jig 3 attached to the notch 21a of the formwork main body 2'is provided. However, the filling formwork 1'has two notches 21a in the formwork body 2', unlike the three places of the filling formwork 1 described above.

Further, in the formwork body 2'of the filling formwork 1', the front plate 20'is formed in a rectangular shape having a thickness of 10 mm x a height of 150 mm x a width (length) of 938 mm, and the upper surface plate 21'is formed. It has a trapezoidal shape with a thickness of 6 mm × a depth (width) of 150 mm × a width (length) of 938 mm.

In this way, two types of filling formwork 1 and filling formwork 1'with different lengths in the longitudinal direction are provided, and by combining these, ready-made filling formwork 1, 1'can be used for bridges with different conditions. It will be easier to do.

<How to use the filling formwork>
Next, a method of using the filling form under the PCa deck according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. The case where the above-mentioned filling formwork 1 is applied to the bridge 10 of FIG. 1 will be illustrated and described.

First, the PCa floor slab 12 is placed on the steel girder 11 after height adjustment and position adjustment. Further, a female screw 12b is embedded in the placed PCa floor slab 12. The female screw 12b is a female screw screwed with the full screw bolt B of M10, and is embedded in the lower surface of the PCa deck 12 with its end exposed.

Then, the full screw bolt B of M10 is inserted into the female screw 12b and mounted, and the fixing jig 3 of the filling form 1 described above is inserted into the mounted full screw bolt B.

After that, as shown in FIG. 2, the formwork main body 2 is applied to both sides of the steel girder 11 and the front plate 20 is attached and fixed so as to be in contact with the side surface of the upper flange of the steel girder 11.

At this time, the fixing jig 3 is pressed against the notch 21a, and the nut is tightened to all the screw bolts B via a washer in a state where the front plate 20 is in contact with the side surface of the upper flange of the steel girder 11 to hold the fixing jig 3. It is fixed in a predetermined position under the PCa floor slab 12.

However, without using the fixing jig 3, reinforcing ribs such as square ribs 22 provided on both sides of the notch 21a can be directly fastened to the full screw bolts B with nuts or the like to fix them. In that case, the filling form 1 can be configured only from the form main body 2, the number of parts can be reduced, and the filling form 1 can be configured at low cost.

However, as described above, by separating the fixing jig 3, the mold body 2 and the fixing jig 3 can be made of different resins, and an appropriate resin can be selected for each part. Is possible.

Further, by separating the fixing jig 3, it is not necessary to increase the size of the mold body 2 and the filling mold 1 as a whole even if the adjustment allowance is long, and as a result, the filling mold 1 as a whole is made compact. It can be carried and workability is improved.

After that, the gaps between the pair of left and right filling formwork 1, 1 on both sides of the steel girder 11, the steel girder 11, and the PCa deck 12 are filled with a filler 13 such as non-shrink mortar.

Then, after the filler 13 is hardened, the nuts and all screw bolts B are loosened and removed, and the filling molds 1 and 1 are disassembled and removed.

After that, the rust preventive coating of the steel girder 11 can be sequentially performed. Of course, it is also possible to apply the rust preventive coating on the steel girder 11 before filling the filler 13. Therefore, if the rust preventive coating is not completed, the sole sponge cannot be installed and the filler 13 cannot be filled, which solves the problem of being a critical point in the conventional process.

In addition, the removed filled formwork 1, 1'can be used repeatedly and repeatedly, and is cheaper than a conventional formwork such as a disposable sole sponge, which improves economic efficiency.

In addition, the filling formwork 1, 1'presses the fixing jig 3 against the notch 21a even if the height between the steel girder 11 filled with the filler 13 and the PCa deck 12 differs from place to place. The front plate 20 can be attached by the same procedure of screwing and fixing in a state where the front plate 20 is in contact with the side surface of the upper flange of the steel girder 11. Therefore, workability is extremely improved.

In addition, since the filling formwork 1, 1'has already been integrated with the reinforcing ribs and the like, the work to be performed on-site is extremely easy, and the work efficiency is extremely improved.

Further, the filling formwork 1, 1'is lighter than the filling formwork made of angle steel described in Patent Document 1, and one worker can simultaneously carry a plurality of filling formwork 1 in layers. Therefore, the portability in a narrow work space is extremely good, and the workability is also improved in that respect.

According to the filling formwork 1 under the PCa floor slab according to the first embodiment of the present invention and the filling formwork 1'under the PCa floor slab according to the second embodiment described above, the PCa floor slab differs from place to place. The formwork can be assembled very easily and in a short time according to the thickness of the filler 13 of the above, and the construction efficiency is good.

Further, the filling formwork 1, 1'can be used repeatedly and repeatedly, and the total cost is lower than that of a conventional formwork such as a disposable sole sponge, and the economy is improved.

In addition, since the filling formwork 1, 1'is removed, the order of rust-preventive coating of the steel girder 11 becomes flexible, and there is an advantage that it does not become a critical point in the process.

Further, since the resin or the like that is deteriorated by ultraviolet rays or the like is not retained, the problem that the appearance deteriorates with time can be solved.

Although the filling formwork 1, 1'under the PCa deck according to the embodiment of the present invention has been described in detail above, any of the above-mentioned or illustrated embodiments is one embodiment embodied in carrying out the present invention. It only shows the morphology. Therefore, the technical scope of the present invention should not be construed in a limited manner by these.

In particular, the mold body 2 made of polypropylene is exemplified, and the fixing jig 3 is made of rigid vinyl chloride, but other resin may be used as described above.

1,1': Filling formwork (filling formwork under PCa deck)
2,2': Formwork body 20,20': Front plate 21,21': Top plate 21a: Notch 22: Square rib (reinforcing rib)
23: Triangular rib (reinforcing rib)
24: Horizontal rib 25: Key material S: Bar material 3: Fixing jig 10: Bridge 11: Steel girder (bridge girder)
12: PCa Deck 12a: Ground covering 12b: Female screw B: Full screw bolt (bolt)
13: Filler 14: Wall railing X: Bridge axis direction Y: Bridge axis perpendicular direction Z: Vertical direction

Claims (6)

It is a filling formwork under the PCa floor slab of the filler that is bolted and fixed to the lower surface of the PCa floor slab placed on the bridge girder and is filled between the bridge girder under the PCa floor slab and the PCa floor slab. hand,
A resin formwork body having an inverted L-shaped cross section having a front plate and a top plate is provided.
The top plate is formed with a plurality of notches through which bolts to be joined to the PCa deck are inserted, and a pair of connecting the front plate and the top plate is formed on both sides of these notches. A filling formwork under the PCa deck, characterized in that each of the reinforcing ribs is formed. Square tubular fixing jigs that are separate from the formwork body are fitted into each of the notches, and these fixing jigs are fixed by being screwed to the bolts. The filling form under the PCa floor slab according to claim 1, wherein the formwork is provided. The PCa according to claim 1 or 2, wherein an L-shaped key member for hooking a bar member is projected from the back surface of the front plate at the end portion in the longitudinal direction of the formwork body. Filling formwork under the deck. The filling mold under the PCa deck according to any one of claims 1 to 3, wherein the top plate has a trapezoidal shape with the protruding corners of the end portions in the longitudinal direction cut out diagonally. frame. The filling form under the PCa deck according to any one of claims 1 to 4, wherein the formwork body is made of transparent or translucent polypropylene. The filling form under the PCa deck according to claim 2, wherein the fixing jig is made of vinyl chloride.

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