Floor slab joint device and floor slab

Abstract

To provide a floor slab joint device or the like provided with a receiving member having a fixing part capable of increasing extraction resistance force to a floor slab and shortening the length.SOLUTION: A floor slab joint device 1 for connecting one floor slab 10 and the other floor slab 10 installed on a girder of a bridge so as to be adjacent to each other is provided with a receiving member 2 provided on one floor slab, a receiving member 2 provided on the other floor slab, and a connecting member 3 for connecting these receiving members. The receiving member 2 is provided with an engaged part 5 with which the connecting member 3 engages, and a fixing part 6 which is provided so as to extend rearward from the engaged part 5 and fixes the engaged part 5 to concrete of the floor slab 10. The engaged part 5 is provided with a front wall part 52 with which the connecting member 3 engages. The front wall part 52 is provided with a front wall surface 52a (wall surface) positioned on the same plane or in parallel with a side edge surface 11 of the floor slab 10. The fixing part 6 is formed non-parallel to a straight line (a) orthogonal to the front wall surface 52a of the front wall part 52.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a deck joint device for connecting one deck slab and another deck slab that are installed adjacent to each other on a bridge girder. [Background technology]

[0002] As a deck joint device for connecting one deck slab and the other deck slab that are installed adjacent to each other on a bridge girder, a deck joint device is known that is configured with a support member installed on one deck slab, a support member installed on the other deck slab, and a connecting member that connects these support members (see Patent Document 1). Using a deck joint device of this configuration, adjacent decks are connected by connecting a support member installed on one adjacent deck with a support member installed on the other adjacent deck with a connecting member. As shown in Figure 4, the receiving member 2A of the conventional deck slab joint device disclosed in Patent Document 1 has an engaged portion 5A with which a connecting member not shown in the figure engages, and an anchoring portion 6A for anchoring the engaged portion 5A to the concrete of the deck slab 10A. The engaged portion 5A includes, for example, a front wall portion 52A with which the connecting member engages, a bottom portion 51A extending rearward from the lower end of the front wall portion 52A, a left wall portion 53AL extending rearward from the left end of the front wall portion 52A, a right wall portion 53AR extending rearward from the right end of the front wall portion 52A, and a rear wall portion 54A extending from the rear ends of the bottom 51A, left wall portion 53AL, and right wall portion 53AR, as well as an upper-opening engaging recess 4A surrounded by the bottom 51A, front wall portion 52A, left wall portion 53AL, right wall portion 53AR, and rear wall portion 54A. The front wall portion 52A has a front wall surface 52a positioned parallel to the edge surface 11 of the floor slab 10A. Furthermore, the left wall portion 53AL, the right wall portion 53AR, and the rear wall portion 54A are each configured with a convex portion 59A on their outer surfaces to improve the adhesion between the engaged portion 5A and the concrete of the deck slab 10A, and to improve the punching shear resistance of the engaged portion 5A. The fixing portion 6A also includes a left fixing member 6AL extending rearward from the left end side of the rear wall portion 54A, a right fixing member 6AR extending rearward from the right end side of the rear wall portion 54A, and an end plate 6AJ as a connecting member connecting the end 6ALe side of the left fixing member 6AL and the end 6ARe side of the right fixing member 6AR. Then, for example, by engaging the connecting member with the engagement recess 4A of the engaged portion 5A, passing a bolt (not shown) through the bolt insertion hole of the connecting member, and tightening the bolt into the screw hole 51a formed in the bottom 51 of the engaged portion 5A, the receiving member 2A installed on one deck slab 10A and the receiving member 2A installed on the other deck slab 10A are connected by the connecting member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-159233 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the receiving member 2A of the conventional deck slab joint device shown in Figure 4 is configured so that the straight line a perpendicular to the front wall surface 52a of the front wall portion 52A in the engaged portion 5A and the left and right fixing members 6AL, 6AR that constitute the fixing portion 6A are positioned parallel to each other. That is, the receiving member 2A is provided on the edge surface 11 side of the floor slab 10A so that the edge surface 11 of the floor slab 10 and the wall surface 52a of the front wall portion 52A of the engaged portion 5A are positioned on the same plane or parallel to each other, and therefore the left and right fixing members 6AL, 6AR are provided so that the edge surface 11 and the extension directions of the left and right fixing members 6AL, 6AR are perpendicular to each other. In this configuration in which the receiving member 2A is provided on the edge surface 11 of the deck slab 10A, as shown in Figure 4, the tensile force TF applied to the receiving member 2A is resisted by the adhesion resistance Ar of the left and right anchoring members 6AL, 6AR to the concrete of the deck slab 10A. Therefore, in order to increase the resistance (pulling-out resistance) to the tensile force (pulling-out) TF in the conventional receiving member 2A, it is necessary to increase the length of the left and right fixing members 6AL, 6AR that make up the fixing portion 6A and increase the adhesion resistance Ar. However, increasing the length of the anchoring member not only increases the material cost of the anchoring member, but also increases the possibility of interference with the reinforcing bars of the reinforced concrete that makes up the deck slab, so there was a challenge in making the length of the anchoring portion as short as possible. The present invention has been made in consideration of the above-mentioned problems, and provides a deck slab joint device, etc., equipped with a receiving member having an anchoring portion that can increase the pull-out resistance force against the deck slab and shorten its length. [Means for solving the problem]

[0005] The deck joint device of the present invention is a deck joint device for connecting one deck to the other deck that are installed adjacent to each other on a bridge girder, and is configured with a receiving member provided on one deck, a receiving member provided on the other deck, and a connecting member connecting these receiving members, or with a receiving member provided on one deck and a connecting member provided on the other deck and connecting the receiving member provided on the one deck, and the receiving member has an engaged portion with which the connecting member engages, and an anchoring portion that extends rearward from the engaged portion and anchors the engaged portion to the concrete of the deck, and the engaged portion has a front wall portion with which the connecting member engages, and the front wall portion has a wall surface positioned parallel to the edge surface of the deck, and the anchoring portion is formed non-parallel to a straight line perpendicular to the wall surface of the front wall portion. The fixing portion is also characterized in that it comprises left and right fixing members, and the left and right fixing members are formed so that their extended end sides extend in directions away from each other from a straight line perpendicular to the wall surface of the front wall portion. The left and right fixing members are characterized in that their extension ends are formed to extend in a curved direction away from a straight line perpendicular to the wall surface of the front wall portion. The engaging portion further comprises a bottom portion extending rearward from the lower end of the front wall portion, a left wall portion extending rearward from the left end of the front wall portion, a right wall portion extending rearward from the right end of the front wall portion, and a rear wall portion extending from the rear ends of the bottom, left wall portion, and right wall portion, and is characterized in that it has an engaging recess at the upper opening surrounded by the front wall portion, bottom wall portion, left wall portion, right wall portion, and rear wall portion, and the left fixing member is arranged to extend rearward from the left end side of the rear wall portion, and the right fixing member is arranged to extend rearward from the right end side of the rear wall portion. The extension ends of the left and right fixing members are joined together by a connecting member. According to the deck joint device of the present invention, it is possible to provide a deck joint device equipped with a receiving member having an anchoring portion that can increase the pull-out resistance force against the deck and can be made shorter in length. In addition, the deck slab of the present invention is a rectangular plate-shaped reinforced concrete deck slab that is installed adjacent to the bridge girder and connected by a deck slab joint device, and is characterized in that it is equipped with a support member for the deck slab joint device as described above on the edge surface side.As a result, it is possible to provide a deck slab equipped with a support member that has an anchoring portion that can increase the pull-out resistance force against the deck slab and shorten its length. [Brief explanation of the drawings]

[0006] [Figure 1] 1A is an exploded perspective view of a deck slab joint device, and FIG. 1B is a perspective view of the deck slab joint device (embodiment 1). [Figure 2] 1A is a plan view showing a deck according to the first embodiment, and FIG. 1B is an enlarged plan view showing a receiving member that constitutes the deck slab joint device. [Figure 3] FIG. 10 is a diagram showing the relationship between the tensile force applied to a support member provided on a deck slab and the shear resistance (first embodiment). [Figure 4] FIG. 10 is a diagram showing the relationship between the tensile force applied to a support member provided on a deck slab and adhesion resistance (conventional example). DETAILED DESCRIPTION OF THE INVENTION

[0007] Embodiment 1 As shown in Figure 2(a), the deck joint device 1 of embodiment 1 is a deck joint device for connecting one deck slab 10 and another deck slab 10 that are installed adjacent to each other on a bridge girder (not shown). As shown in Figure 1, the deck joint device 1 is configured to include a support member 2 provided on one deck slab 10, a support member 2 provided on the other deck slab 10, and a connecting member 3 connecting these support members 2, 2. In other words, the deck joint device 1 is configured to include, for example, one support member 2 such as a C-shaped metal fitting provided on one deck 10 arranged adjacent to each other on the bridge girder, another support member 2 such as a C-shaped metal fitting provided on the other deck 10 arranged adjacent to each other on the bridge girder, and a connecting member 3 such as an H-shaped metal fitting that connects the one support member 2 and the other support member 2. In this specification, the terms up, down, left, right, front, and rear are defined as directions shown in the drawings.

[0008] The receiving member 2 has an engaged portion 5 having an engaging recess 4 with which the connecting member 3 engages, and an anchoring portion 6 that is anchored to the concrete of the deck slab 10 in order to anchor the engaged portion 5 to the concrete of the deck slab 10.

[0009] The connecting member 3 has one engaging portion 7 that engages with the engaging recess 4 of one of the receiving members 2, the other engaging portion 7 that engages with the engaging recess 4 of the other receiving member 2, and a connecting portion 8 that connects the one engaging portion 7 and the other engaging portion 7. The material of the connecting member 3 is not particularly limited, but for example, it may be made of a one-piece molded product such as steel, in which cast iron is poured into a formwork not shown in the figure and one engaging portion 7, the other engaging portion 7, and the connecting portion 8 are molded as a single unit.

[0010] The engaged portion 5 comprises a front wall portion 52, a left wall portion 53L extending rearward from the left end of the front wall portion 52, a right wall portion 53R extending rearward from the right end of the front wall portion 52, a bottom portion 51 extending rearward from the lower end of the front wall portion 52, and a rear wall portion 54 extending from the rear ends of the bottom portion 51, the left wall portion 53L, and the right wall portion 53R, and is configured with an upper-opening engaging recess 4 surrounded by the front wall portion 52, the left wall portion 53L, the right wall portion 53R, the bottom 51, and the rear wall portion 54.

[0011] In other words, the engaged portion 5 comprises a bottom 51, a rear wall portion 54 that rises from the rear edge side of the bottom 51, a left wall portion 53L and a right wall portion 53R that extend from both the left and right sides of the rear wall portion 54 and rise from the left and right edges of the bottom 51, and a front wall portion 52 that extends from the front ends of the left wall portion 53L and the right wall portion 53R and rises from the front edge side of the bottom 51.

[0012] The engaged portion 5 has an upper opening facing the bottom 51 and an engaging portion insertion opening 41 (upper opening of the engaging recess 4) which serves as an insertion port for inserting the engaging portion 7 of the connecting member 3 into the engaging recess 4, and the front wall portion 52 has a connecting portion insertion groove 42 which serves as an insertion groove of the upper opening for inserting the connecting portion 8 of the connecting member 3. The opening 41 for inserting the engagement portion is an upper opening surrounded by the upper end of the front wall portion 52, the upper end of the left wall portion 53L, the upper end of the right wall portion 53R, and the upper end of the rear wall portion 54, and is formed by an opening that allows the engagement portion 7 of the connecting member 3 to be inserted into the engagement recess 4 from above. The front wall portion 52 is a wall body having a front wall surface 52a that is exposed to the edge surface 11 when the receiving member 2 is installed on the edge surface 11 side of the deck slab 10, and has the above-mentioned connecting portion insertion groove 42 for inserting the connecting portion 8 of the connecting member 3. That is, the front wall portion 52 is configured to have a front wall surface 52 a as a wall surface positioned on the same plane as or parallel to the edge surface 11 of the deck slab 10 . The groove 42 for inserting the connecting part is an upper-opening groove that extends continuously in the vertical direction from the upper end side of the front wall part 52 to the bottom part 51 side in the central part between the left and right sides of the front wall part 52, and is formed with a groove width that is spaced so that the connecting part 8 of the connecting member 3 can be inserted from above.

[0013] As shown in Figures 1 and 2(b), the left wall portion 53L, the right wall portion 53R, and the rear wall portion 54 are each configured with a convex portion 59 on their outer surfaces, and since the left wall portion 53L, the right wall portion 53R, and the rear wall portion 54 are configured with the convex portions 59, the receiving member 2 is configured to improve the adhesion between the engaged portion 5 and the concrete of the deck slab 10, and the punching shear resistance of the engaged portion 5.

[0014] The fixing portion 6 comprises a left fixing member 6L and a right fixing member 6R, the left fixing member 6L being arranged to extend rearward from the left end side of the rear wall portion 54, and the right fixing member 6L being arranged to extend rearward from the right end side of the rear wall portion 54. As shown in FIG. 2(b), the left fixing member 6L is configured to extend and curve from a base end 6La located on the left end side of the rear wall portion 54 toward an extension end 6Le, and similarly, the right fixing member 6R is configured to extend and curve from a base end 6Ra located on the right end side of the rear wall portion 54 toward an extension end 6Re. That is, as shown in Figure 2(b), when a straight line a perpendicular to the front wall surface (wall surface) 52a of the front wall portion 52 is defined, the center line 6c of the left fixing member 6L passing through the base end 6La and the extension end 6Le of the left fixing member 6L becomes a curved line, and the center line 6c of the right fixing member 6R passing through the base end 6Ra and the extension end 6Re of the right fixing member 6R becomes a curved line, so that the center lines 6c, 6c of the left and right fixing members 6L, 6R and the straight line a perpendicular to the front wall surface 52a of the front wall portion 52 described above are configured to be non-parallel. In other words, the left and right fixing members 6L, 6R are configured so that the extension ends 6Le, 6Re extend in a curved direction away from the straight line a perpendicular to the front wall surface 52a of the front wall portion 52. The fixing members 6L and 6R are formed, for example, in the shape of a rod having protrusions on the outer periphery thereof.

[0015] The material of the receiving member 2 is not particularly limited, but for example, it may be made of a one-piece molded product such as steel, in which cast iron is poured into a formwork not shown in the figure to integrally mold the engaged portion 5 and the fixing members 6L, 6R that constitute the fixing portion 6.

[0016] The engaging portion 7 of the connecting member 3 is configured, for example, to have an outer peripheral wall facing the inner peripheral wall of the engaging recess 4, and is provided with a fixing portion 72 having an outer wall surface 71 on the front surface of the rear wall portion 54 facing the rear inner wall surface of the engaging recess 4 and the left and right inner wall surfaces of the engaging recess 4, which are the inner surfaces of the left and right wall portions 53L, 53R, and a wall portion 74 having an engaging wall surface 73 facing the front inner wall surface of the engaging recess 4, which is the rear surface 52b of the front wall portion 52. The fixing portion 72 of the engaging portion 7 is formed with a bolt insertion hole 75 for fixing the fixing portion 72 to the bottom portion 51 of the engaged portion 5 with a fixing means such as a bolt (not shown). It should be noted that the fixing portion 72 and the bolts used as fixing means may not be used. For example, the configuration may be such that the engaging portion of the connecting member and the engaged portion of the receiving member are fixed by using, as a fixing means, a wedge-shaped fitting member (not shown) that is fitted between the front inner wall surface of the engaging recess of the engaged portion and the inner wall surface of the wall portion of the engaging portion of the connecting member; in short, any configuration is acceptable as long as it is possible to fix the engaging portion of the connecting member and the engaged portion of the receiving member.

[0017] The deck 10 of embodiment 1 is a rectangular plate-shaped reinforced concrete deck that is installed adjacent to a bridge girder (not shown) and connected by a deck joint device 1, and is configured with a support member 2 of the above-mentioned deck joint device 1 on the edge surface 11 side. The reinforced concrete deck 10 is, for example, a deck containing reinforcing bars, PC steel wires, or steel material, or two or more of the reinforcing bars, steel material, and PC steel wires.

[0018] That is, as shown in Figure 2(a), the deck slab 10 of embodiment 1 has a plurality of the above-mentioned receiving members 2 on the edge surface 11 side, spaced at predetermined intervals along the longitudinal direction of the edge surface 11. As an example of a deck slab 10, for example, Figure 2(a) shows a deck slab 10 configured such that when installed on a bridge girder, the edge surface 11 extends along the direction Y perpendicular to the bridge axis of the bridge, and multiple support members 2 described above are provided at predetermined intervals along the longitudinal direction of the edge surface 11 (direction Y perpendicular to the bridge axis).

[0019] The deck 10 is manufactured, for example, as follows. Steel bars etc. to be embedded in the deck slab 10 are placed within a deck slab forming formwork not shown in the figure, and multiple receiving members 2, 2... are placed at predetermined positions within the deck slab forming formwork so that the front wall surface 52a of the front wall portion 52 of the engaged portion 5 and the edge surface 11 of the deck slab 10 are positioned, for example, on the same plane, and the groove 42 for inserting the connecting portion and the opening 41 for inserting the engaging portion of the engaging recess 4 are exposed to the outside of the deck slab 10. Thereafter, concrete is poured into the deck slab forming formwork and allowed to harden, thereby completing the deck slab 10 with the receiving members 2, 2 . . . installed on the edge surface 11 side. That is, by placing multiple receiving members 2, 2... in a deck slab forming formwork so that the front wall surface 52a of the front wall portion 52 of the engaged portion 5, the groove 42 for inserting the connecting portion of the engaging recess 4, the opening 41 for inserting the engaging portion, and the engaging recess 4 are exposed to the outside, and the other parts of the engaged portion 5 and the fixing portion 6 are embedded in the concrete of the deck slab 10, concrete is poured into the formwork and allowed to harden, thereby forming a deck slab 10 with receiving members 2, 2... installed on the edge surface 11 side.

[0020] The deck slab joining method using the deck slab 10 according to the first embodiment is as follows. First, one deck 10 and the other deck 10 are installed adjacent to each other on the bridge girder with joints interposed therebetween. For example, as shown in Figure 2(a), when using a deck 10 having the above-mentioned support member 2 provided on the edge surface 11 side of the bridge, which becomes the edge surface 11 extending along the direction Y perpendicular to the bridge axis of the bridge, one deck 10 and the other deck 10 are installed adjacent to each other on the bridge girder along the bridge axis direction X with a joint 16 interposed therebetween.

[0021] Then, the respective receiving members 2, 2 provided so as to face each other on the mutually facing edge faces 11, 11 sides of the adjacent deck slabs 10, 10 via the joints 16 are connected by the connecting members 3. That is, the engaging portions 7, 7 of the connecting member 3 are inserted into the engaging recesses 4, 4 from above the engaging recesses 4, 4 of the engaged portions 5, 5 of the opposing receiving members 2, 2 through the engaging portion insertion openings 41 at the top of the engaging recesses 4, 4, and the connecting portions 8 of the connecting member 3 are inserted into the connecting portion insertion grooves 42 of the engaging recesses 4, 4, so that the pair of engaging portions 7, 7 are fitted into the engaging recesses 4, 4 while the engaging wall surfaces 73, 73 of the pair of engaging portions 7, 7 are guided by the rear surface 52 b of the front wall portion 52 (see FIG. 1 ), and the engaging portions 7, the engaging wall surfaces 73 and the rear surface 52 b of the front wall portion 52 are engaged with each other. That is, the engaged portion 5 has a front wall portion 52 with which the connecting member 3 engages. Furthermore, for example, by inserting a bolt as a fixing means into the bolt insertion hole 75 of the engaging portion 7 fitted into the engaging recess 4, and fastening a bolt (not shown) into the screw hole 51a (see Figure 2(b)) formed in the bottom 51, the engaging portion 7 of the connecting member 3 and the engaged portion 5 of the receiving member 2 are fixed together. As a result of the above, the adjacent deck slabs 10, 10 are connected to each other by the deck slab joint device 1.

[0022] After adjacent deck slabs 10, 10 are connected with the deck joint device 1, a filler such as mortar or adhesive is filled above the fixed connecting member 3 and the engaged portion 5, and the filler is filled into the joints, which are the gaps between the edge surfaces 11, 11 of the adjacent deck slabs 10, 10, thereby completing the joining of the adjacent deck slabs 10, 10.

[0023] That is, after arranging the edge surfaces 11, 11 of adjacent deck slabs 10, 10 adjacent to each other with gaps forming joints 16 between them, the connecting portions 8 of the connecting members 3 are inserted from above into the connecting portion insertion grooves 42 of the engaged portions 5, 5 installed on the edge surfaces 11, 11 of each adjacent deck slab 10, 10, thereby engaging the pair of engaging portions 7, 7 of the connecting members 3 with the engaging recesses 4, 4, and the engaging portions 7 engaged in the engaging recesses 4 and the engaged portions 5 are fixed with fixing means such as bolts, and filler is filled above the receiving member 2 and the connecting members 3 and in the joints between the edge surfaces 11, 11 of each adjacent deck slab 10, 10, thereby completing a deck slab joint structure in which adjacent deck slabs 10 are connected to each other.

[0024] According to the deck joint device 1 of embodiment 1, the left and right fixing members 6L, 6R of the receiving member 2 provided on the deck slab 10 are configured so that the extended ends 6Le, 6Re extend in a curved direction away from each other from a straight line a perpendicular to the front wall surface 52a of the front wall portion 52 of the engaged portion 5.Therefore, in a configuration in which the receiving member 2 is provided on the edge surface 11 of the deck slab 10, as shown in Figure 3, the tensile force (pulling) TF applied to the receiving member 2 is resisted by the shear resistance Sr generated in the concrete of the deck slab 10 by the left and right fixing members 6L, 6R. In other words, since the left and right anchoring members 6L, 6R do not extend in a direction perpendicular to the edge surface 11 of the deck slab 10 on which the receiving member 2 is installed, the concrete portion between the extended ends 6Le, 6Re of the left and right anchoring members 6L, 6R and the edge surface 11 of the deck slab 10 acts as shear resistance Sr and provides resistance. The shear resistance Sr generated in the concrete of the deck slab 10 due to the left and right anchoring members 6L, 6R is greater than the adhesion resistance Ar to the concrete of the left and right anchoring members 6AL, 6AR of the conventional receiving member 2A shown in Figure 4. Therefore, according to the deck joint device 1 of embodiment 1, it is possible to provide a deck joint device 1 equipped with a receiving member 2 that can increase the pull-out resistance force against the deck slab 10 and shorten the length of the left and right fixing members 6L, 6R that constitute the fixing portion 6 for fixing to the deck slab 10. Moreover, it becomes possible to provide a deck slab 10 having the receiving member 2 on the edge surface 11 side.

[0025] Furthermore, in the conventional receiving member 2A shown in Figure 4, it is necessary to increase the length of the left and right fixing members 6AL, 6AR that make up the fixing portion 6A to increase the adhesion resistance Ar, which means that the rear ends 6ALe, 6ARe of the fixing members 6AL, 6AR come closer to the center of the deck slab 10A, making the fixing portion 6A more likely to interfere with reinforcing bars, etc. within the deck slab 10A, which may result in a problem of limiting the freedom of design for the placement of reinforcing bars within the deck slab 10A. On the other hand, in the receiving member 2 of the deck slab joint device 1 of embodiment 1, the length of the left and right fixing members 6L, 6R that constitute the fixing portion 6 can be shortened and the pull-out resistance force against the deck slab 10 can be increased, so that the fixing portion 6 is less likely to interfere with reinforcing bars, etc. within the deck slab 10, and the effect is also obtained that the degree of freedom in the design of the arrangement of reinforcing bars within the deck slab 10 is less likely to be restricted.

[0026] As described above, according to the deck slab joint device 1 of embodiment 1, the left and right fixing members 6L, 6R are configured so that the extended ends 6Le, 6Re extend in a curved direction away from each other from the straight line a perpendicular to the front wall surface 52a of the front wall portion 52, thereby increasing the pull-out resistance force against the deck slab 10.This makes it possible to shorten the length of the left and right fixing members 6L, 6R that make up the fixing portion 6, making it possible to reduce the size of the receiving member 2 and the cost of the receiving member 2, and further makes it possible to provide a deck slab joint device 1 equipped with a receiving member 2 that is configured so as to less restrict the degree of freedom in the design of the arrangement of reinforcing bars within the deck slab 10. Furthermore, by providing the receiving member 2 on the edge surface 11 side, it is possible to provide a deck slab 10 in which the degree of freedom in designing the layout of reinforcing bars within the deck slab 10 is not easily restricted.

[0027] Embodiment 2 The engaged portion 5 of the receiving member 2 that constitutes the deck slab joint device 1 may not have the rear wall portion 54 and the bottom portion 51 described above. For example, the engaged portion 5 may be formed by a front wall portion 52, a left wall portion 53L extending rearward from the left end of the front wall portion 52, a left-side extended front wall portion not shown in the figure that protrudes to the left from the left end of the front wall portion 52, a right wall portion 53R extending rearward from the right end of the front wall portion 52, and a right-side extended front wall portion not shown in the figure that protrudes to the right from the right end of the front wall portion 52, and is configured so that the connecting member 3 engages with the rear surface 52b of the front wall portion 52. The receiving member 2 may also be configured to include an engaged portion 5 that does not have the above-mentioned rear wall portion 54 and bottom portion 51, the above-mentioned left-side fixing member 6L that is arranged to extend rearward from the above-mentioned left-side extended front wall portion of the engaged portion 5, and the above-mentioned right-side fixing member 6R that is arranged to extend rearward from the above-mentioned right-side extended front wall portion of the engaged portion 5. Moreover, the deck slab 10 may be provided with the receiving member 2. The receiving member 2 of embodiment 2 and the deck slab 10 equipped with said receiving member 2 are configured without a rear wall portion 54 and a bottom portion 51, so that the effects of embodiment 1 can be obtained while a receiving member 2 and a deck slab 10 with a high cost reduction effect can be provided.

[0028] Embodiment 3 In the deck joint device 1 described in each of the above-mentioned embodiments, an example has been given of a support member 2 that is an integrally molded product in which the engaged portion 5 and the fixing portion 6 are integrated, but it is also possible to configure a support member 2 that is equipped with a fixing portion 6 by attaching a fixing portion 6 to a support member that is configured without the fixing portion 6.

[0029] Embodiment 4 In each embodiment, an example has been given of a deck joint device 1 having a configuration including one support member such as a C-shaped metal fitting provided on one deck slab 10 arranged adjacent to the bridge girder, another support member such as a C-shaped metal fitting provided on the other deck slab 10 arranged adjacent to the bridge girder, and a connecting member such as an H-shaped metal fitting that connects the one support member and the other support member, but the deck joint device of the present invention may be a deck joint device of other configurations, for example, a deck joint device of the following configuration.

[0030] In other words, the deck joint device of the present invention may be a deck joint device configured to connect adjacent decks by engaging a receiving member such as a C-shaped metal fitting provided on one deck that is installed adjacent to the bridge girder and a connecting member such as a T-shaped metal fitting provided on the other deck that is placed adjacent to the bridge girder, and by engaging the connecting member with a recess in the receiving member. In this case, the deck slab of the present invention is configured to have a plurality of receiving members, such as the above-mentioned C-shaped metal fittings, and connecting members, such as the above-mentioned T-shaped metal fittings, on the edge surface side adjacent to the joint, spaced at predetermined intervals along the longitudinal direction of the edge surface. The receiving member, which may be called a C-shaped metal fitting, may be configured to have the fixing portion 6 described above.

[0031] In other words, the deck joint device of the present invention may be a deck joint device configured to include a receiving member provided on one deck slab and a connecting member provided on the other deck slab and connected to the receiving member provided on the one deck slab, and the receiving member may be configured to include the above-mentioned fixing portion 6.

[0032] In addition, the deck joint device of the present invention may be a deck joint device configured to include one receiving member having a recessed portion called a bolt box provided on one deck slab installed adjacent to the bridge girder, another receiving member having a recessed portion called a bolt box provided on the other deck slab arranged adjacent to the bridge girder, and a connecting bolt installed across the one bolt box and the other bolt box as a connecting member connecting the one receiving member and the other receiving member. In this case, the deck slab of the present invention is configured to have a plurality of receiving members with recesses, such as the above-mentioned bolt boxes, on the edge surface side adjacent to the joint, spaced at predetermined intervals along the longitudinal direction of the edge surface. The receiving member having a recess, such as a bolt box, may be provided with the fixing portion 6 described above.

[0033] Embodiment 5 A known type of bridge deck replacement work is half-section construction (lane-specific deck replacement work) in which the bridge is divided into two phases: a first phase in which the direction perpendicular to the bridge axis Y of the bridge is divided into two equal parts, and the decks 10, 10... for the driving lane D are lined up and connected along the bridge axis direction (vehicle travel direction) X, and a second phase in which the decks 10, 10... for the passing lane P are lined up and connected along the bridge axis direction (vehicle travel direction) X. In this half-section construction in which the deck slabs 10, 10... are replaced for each lane, it is sufficient to use a deck slab 10 that has the above-mentioned bearing members 2 spaced at predetermined intervals along the longitudinal direction of the edge surface 11 that will extend in the direction perpendicular to the bridge axis Y, and that has the above-mentioned bearing members 2 spaced at predetermined intervals along the longitudinal direction of the edge surface 11 that will extend in the bridge axis direction X.

[0034] Embodiment 6 In each embodiment, the left and right fixing members 6L, 6R are exemplified as being configured such that the extension ends 6Le, 6Re extend in a curved manner away from each other from the straight line a perpendicular to the front wall surface 52a of the front wall portion 52, but the left and right fixing members 6L, 6R may also be configured such that the extension ends 6Le, 6Re extend in a straight manner away from each other from the straight line a perpendicular to the front wall surface 52a of the front wall portion 52.

[0035] Embodiment 7 In each embodiment, the left and right fixing members 6L, 6R are exemplified as being configured such that the extension ends 6Le, 6Re are curved and extend away from each other from the straight line a perpendicular to the front wall surface 52a of the front wall portion 52, but the left and right fixing members 6L, 6R may also be configured such that the extension ends 6Le, 6Re are curved and extend away from each other from the straight line a perpendicular to the front wall surface 52a of the front wall portion 52.

[0036] Embodiment 8 The receiving member 2 may be configured to have a plurality of fixing portions 6, each of which is configured with the above-mentioned left and right fixing members 6L, 6R and end plate 6J, spaced apart in the vertical direction of the engaged portion 5.

[0037] Embodiment 9 In each embodiment, a receiving member 2 is exemplified that has a fixing portion 6 that is configured with left and right fixing members 6L, 6R and an end plate 6J, but the receiving member 2 may also be configured to have only the left and right fixing members 6L, 6R and not the end plate 6J.

[0038] Embodiment 10 In each embodiment, a receiving member 2 is exemplified that has an anchoring portion 6 that is composed of left and right anchoring members 6L, 6R and an end plate 6J, but the anchoring portion 6 of the receiving member 2 may also be composed of a single anchoring member that is arranged to extend rearward from the engaged portion 5 and for anchoring the engaged portion 5 to the concrete of the deck slab 10, and in this case, it is sufficient that the single anchoring member is formed non-parallel to a straight line a that is perpendicular to the front wall surface (wall surface) 52a of the front wall portion 52 of the engaged portion 5.

[0039] In other words, the receiving member of the deck slab joint device of the present invention is provided with one or more fixing members that constitute a fixing portion that is arranged to extend rearward from the engaged portion 5, and it is sufficient that the one or more fixing members are formed non-parallel to a straight line a that is perpendicular to the front wall surface (wall surface) 52a of the front wall portion 52 of the engaged portion 5.By configuring the receiving member with such fixing members, the pull-out resistance force against the deck slab 10 can be increased and the length of the fixing portion can be shortened.

[0040] In each of the above-described embodiments, a configuration in which a spacer is not installed in the gap that will become the joint 16 has been exemplified, but a configuration in which a spacer is installed in the gap that will become the joint 16 may also be used. In this case, either one of the support members provided on one opposing deck slab and the support member provided on the other deck slab, or either one of the support members provided on one opposing deck slab and the connecting member provided on the other deck slab, can be configured to have a spacer (not shown) that corresponds to the dimensions of the gap that will become joint 16. For example, the receiving member 2 may be provided with a spacer (not shown) corresponding to the size of the gap that will become the joint 16 on the front wall surface (wall surface) 52a of the front wall portion 52 of the engaged portion 5. Alternatively, a spacer (not shown) may be installed in a fitted state in the gap of the joint 16 between a receiving member provided on one deck slab and a receiving member provided on the other deck slab that face each other via the joint 16, or in the gap of the joint 16 between a receiving member provided on one deck slab and a connecting member provided on the other deck slab that face each other via the joint 16. For example, a spacer (not shown) may be installed in an interlocking state between the front wall surfaces (wall surfaces) 52a, 52a of the front wall portions 52, 52 of the engaged portions 5, 5 of the opposing receiving members 2, 2, or between the front wall surfaces of the front wall portions of the engaged portions of the opposing receiving members and the front wall surface of the connecting member.

[0041] In this manner, when a spacer is installed in the gap that becomes the joint 16, when opposing deck slabs 10, 10 are connected to each other via the joint 16 using the deck slab joint device 1, for example, if each of the receiving members 2, 2 that face each other across the joint 16 are connected using a fixing means such as a bolt or wedge-shaped inserting member not shown in the figure, the spacer provided between the front wall surfaces 52a, 52a of the engaged portions 5, 5 of each receiving member 2, 2 will function as a reaction force device. Therefore, by providing a spacer that functions as a reaction force device, it becomes possible to suppress the attractive force that acts in the direction of attracting the opposing deck slabs 10, 10 together through the joint 16, thereby preventing the deck slabs 10, 10 from getting too close to each other. Furthermore, an opposite force (reaction force) corresponding to the force acting in the direction of attracting each deck slab 10, 10 toward each other is applied from the spacer to the front wall surfaces 52a, 52a of the engaged portions 5, 5 of each receiving member 2, 2, thereby enabling each receiving member 2, 2 to be firmly integrated with the connecting member 3. Furthermore, even when connecting opposing deck slabs 10, 10 via a joint 16 using a deck joint device having a receiving member provided on one of the opposing decks and a connecting member provided on the other deck, if a spacer is installed in the gap that becomes the joint 16, the same effect as that described above can be obtained. [Explanation of symbols]

[0042] 1 Deck joint device 2 Receiving member 3 Connecting members 4 Engagement recess 5 Engaged part 6 Fixing section 6L Left fixing member 6R Right fixing member 6Le, 6Re Extension end of fixing member 6J End plate (connecting member) 10 Floor slab 11 Edge surface of deck slab 51 Bottom 52 Front wall 52a Front wall (wall) 53L Left wall section 53R Right wall section 54 Rear wall a Straight line perpendicular to the front wall

Claims

1. A deck joint device for connecting one deck and another deck installed adjacent to each other on a bridge girder, The structure is configured with a receiving member provided on one floor slab, a receiving member provided on the other floor slab, and a connecting member connecting these receiving members, or or, The structure is configured with a receiving member provided on one floor slab and a connecting member provided on the other floor slab and connected to the receiving member provided on the one floor slab, The receiving member includes an engaged portion with which the connecting member engages, and an anchoring portion that extends rearward from the engaged portion and anchors the engaged portion to the concrete of the deck slab, the engaged portion has a front wall portion with which the connecting member engages; The front wall portion has a wall surface positioned on the same plane as or parallel to the edge surface of the deck slab, A deck joint device characterized in that the fixing portion is formed non-parallel to a straight line perpendicular to the wall surface of the front wall portion.

2. The deck joint device described in claim 1, characterized in that the fixing portion has left and right fixing members, and the left and right fixing members are formed so that their extended end sides extend in directions away from each other from a straight line perpendicular to the wall surface of the front wall portion.

3. The deck joint device according to claim 2, characterized in that the left and right fixing members are formed so that their extended ends extend in a curved direction away from each other from a straight line perpendicular to the wall surface of the front wall portion.

4. the engaged portion comprises a bottom portion extending rearward from the lower end of the front wall portion, a left wall portion extending rearward from the left end of the front wall portion, a right wall portion extending rearward from the right end of the front wall portion, and a rear wall portion extending from the rear ends of the bottom, left wall portion, and right wall portion, and also comprises an engaging recess at an upper opening surrounded by the front wall portion, the bottom, left wall portion, right wall portion, and rear wall portion; the left fixing member is provided so as to extend rearward from the left end side of the rear wall portion, 3. The deck joint device according to claim 2, wherein the right fixing member is provided so as to extend rearward from the right end side of the rear wall portion.

5. 3. The deck joint device according to claim 2, wherein the extension ends of the left and right fixing members are connected to each other by a connecting member.

6. A rectangular plate-shaped reinforced concrete deck slab that is installed adjacent to the bridge girder and connected by a deck joint device, A deck slab characterized in that a receiving member of the deck slab joint device according to any one of claims 1 to 5 is provided on the edge surface side.

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