JP4238461B2 - Joint device for panel members in composite floor slabs - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint device for panel members used in a composite floor slab used in a bridge slab.
[0002]
[Prior art]
Generally, as a floor slab for a bridge, a composite floor slab in which a reinforcing bar and concrete are synthesized is used.
For example, as shown in FIG. 4, the composite floor slab includes a plurality of rectangular bottom steel plates 108, a plurality of steel main members 109 welded and fixed on each bottom steel plate 108, and a plurality of vertical and horizontal pieces on the main members 109. A panel member made up of a plurality of reinforcing bars 110 arranged in a row, and adjacent bottom steel plates 108 of the panel members are joined together by a plurality of joint devices 101 arranged at a predetermined pitch in the width direction of the bottom steel plate 108. In addition, concrete 113 is placed on the panel member.
[0003]
Here, as shown in FIG. 5, the joint device 101 includes a pair of L-shaped steel joint bodies 102 attached to each of joint ends of adjacent bottom steel plates 108, and a pair of joint bodies 102. And a steel attachment plate 103 attached to the surface of the upright plate portion 102a (the right surface in FIG. 5). A plurality of through holes 103a and 102b through which the threaded portion of the high-strength bolt 105 passes are formed in each of the attachment plate 103 and the upright plate portion 102a. A plurality of high-strength bolts 105 are passed through the through holes 103a and 102b and tightened with nuts 106 via washers 107, whereby the joint bodies 102 and eventually the adjacent bottom steel plates 108 are joined together. . In addition, on the joining line extended in the width direction of the adjacent bottom steel plate 108, the plate 104 is arrange | positioned so that the joint apparatus 101 may be penetrated, and the placed concrete 113 is prevented from leaking from a joining line.
[0004]
In order to construct a bridge using such a composite floor slab, a plurality of main members 109 are fixed to the upper surface of the bottom steel plate 108 by welding in the factory in advance, and the joint body 102 is attached to both ends of the joint of the bottom steel plate 108. A plurality of steel bars 110 are manufactured, and a plurality of reinforcing bars 110 are manufactured. Then, these members are carried to the site, and as shown in FIG. 4, a plurality of bottom steel plates 108 are placed on the I-shaped main girder 111 arranged at predetermined intervals in the width direction via stud gibels 112. Place sequentially along the direction. Each bottom steel plate 108 is formed with a through-hole (not shown) through which the stud dowel 112 passes.
[0005]
Thereafter, as best shown in FIG. 5, the plate 104 is disposed so as to penetrate the joint body 102 on the joining line extending in the width direction of the adjacent bottom steel plate 108, and then the pair of attachment plates 103 is paired. A plurality of high-strength bolts 105 and nuts 106 are tightened together with washers 107 along the surface of the upright plate portion 102a of the joint main body 102 to join the joint main bodies 102 together, and adjacent bottom steel plates 108 are joined together.
[0006]
After that, as shown in FIG. 4, a plurality of reinforcing bars 110 are placed in a plurality of rows and columns on the main member 109, and concrete 113 is placed around the reinforcing bars 110 and the main member 109, and the panel member and the main member 109 are placed. Integrate with the girder 111. In this state, if pavement 114 is applied and a handrail 115 is installed, a bridge is constructed.
In the joining work between the adjacent bottom steel plates 108, in addition to the method of joining the bottom steel plates 108 by fastening the high strength bolt 105 to the attachment plate 103 and the pair of joint bodies 102, the bottom steel plates 108 or There are a method of arranging a welding plate on the adjacent bottom steel plate 108 and bolting the welding plate and the bottom steel plate 108 or a method of welding and joining in the field. Of these, the field welding method requires that the work be easily affected by the weather, and that the work itself must be performed by a person familiar with the welding work. There are concerns about the occurrence of defects. Therefore, a method of joining the bottom steel plates 108 by fastening the high-strength bolts 105 to the contact plate 103 and the pair of joint main bodies 102, or arranging a contact plate on the adjacent bottom steel plate 108, A method of bolting the bottom steel plate 108 is generally performed.
[0007]
[Problems to be solved by the invention]
However, in the construction work of the bridge using the conventional composite floor slab, when the plurality of bottom steel plates 108 are sequentially placed on the main girder 111 along the longitudinal direction of the main girder 111, the adjacent bottom steel plates 108 are disposed. The pair of joint bodies 102 attached to the joint ends of the two plates are displaced in the plate thickness direction of the upright plate portion 102a (in the direction of arrow A shown in FIG. 5), that is, in the width direction of the bottom steel plate 108, or Due to the fact that the position of the joint body 102 relative to the bottom steel plate 108 has shifted from the beginning of attaching the joint body 102 to both ends of the joint of the steel plates 108, a pair of attachments attached to the joint ends of the adjacent bottom steel plates 108. The joint bodies 102 may be displaced in the thickness direction of the upright plate portion 102a. In this state, if the high-strength bolt 105 is tightened against the attachment plate 103 and the upright plate portion 102a of the pair of joint main bodies 102, the attachment plate 103 is inclined and an appropriate tightening force cannot be obtained.
[0008]
Therefore, in this case, a filler plate is filled between the attachment plate 103 and the upright plate portion 102a of the joint body 102 that is displaced, or the upright plate portion 102a of the joint body 102 that is displaced. In addition, it is necessary to perform an operation such as hammering or heating with a hammer or the like for correction, and the position adjusting operation of the joint body 102 is difficult.
[0009]
The present invention has been made to solve the above-described problems, and its purpose is to adjust the position in the plate thickness direction of the upright plate portions of a pair of joint bodies at the joint end portions of adjacent bottom steel plates. An object of the present invention is to provide a joint device for panel members in a composite slab that can be easily operated.
[0010]
[Means for Solving the Problems]
In order to solve the above problem, a joint device for panel members in a composite floor slab according to claim 1 of the present invention includes a plurality of bottom steel plates, main members attached to the respective bottom steel plates, and the main members. It is used for a composite slab that has a panel member composed of reinforcing bars to be arranged, joins the bottom steel plates adjacent to each other by a joint device, and places concrete on the panel member. In the panel member joint device, the joint device straddles a pair of joint main bodies provided at each of joining end portions of the adjacent bottom steel plates, and a surface of an upright plate portion of the pair of joint main bodies. An attachment plate that is fixed to the upright plate portion by a fastening means and joins the joint main bodies together, and at least one joint main body of the pair of joint main bodies in the plate thickness direction of the upright plate portion. Move It is characterized by comprising a position adjusting mechanism for.
[0011]
According to this joint apparatus, when a pair of joint main bodies are displaced in the plate thickness direction of the upright plate portion, at least one joint main body is appropriately attached in the plate thickness direction of the standup plate portion by the position adjusting mechanism. Thus, the upright plate portions of the pair of joint main bodies are aligned with each other to adjust the position of the upright plate portions of the pair of joint main bodies in the thickness direction.
Moreover, the joint apparatus of the panel member in the composite floor slab according to claim 2 of the present invention is the invention according to claim 1, wherein the position adjustment mechanism is a screw member fixed to the one joint body; A support member attached to a joining end portion of a bottom steel plate and supporting the screw member; and screwing and tightening to the screw member to fasten and fix the screw member to the support member, and when loosened, the screw member And a nut member capable of moving in the plate thickness direction of the upright plate portion.
[0012]
According to this joint apparatus, the position of the screw member and one joint member fixed to the screw member can be adjusted in the thickness direction of the upright plate portion by loosening and tightening the nut member of the position adjusting mechanism.
Furthermore, the panel member joint device in the composite floor slab according to claim 3 of the present invention is the guide member according to claim 1 or 2, wherein the position adjusting mechanism guides the movement of the one joint body. It is characterized by having.
[0013]
According to this joint device, the movement of one joint body can be guided by the guide member.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional perspective view of a part of a bridge using a composite floor slab. FIG. 2 is a perspective view of an embodiment of the joint device according to the present invention. FIG. 3 is a perspective view of a position adjusting mechanism in the joint device shown in FIG.
[0015]
In FIG. 1, the composite floor slab is arranged in a plurality of rectangular bottom steel plates 8, a plurality of steel main members 18 welded and fixed on each bottom steel plate 8, and a plurality of vertical and horizontal rows on these main members 18. A panel member composed of a plurality of reinforcing bars 19 is provided, and adjacent bottom steel plates 8 among the panel members are arranged at a predetermined pitch in the width direction of the bottom steel plate 8 (about 70 cm to 100 cm in this embodiment). The plurality of joint devices 1 are joined to each other, and concrete 22 is placed on the panel member.
[0016]
Here, as shown in FIG. 2, the joint device 1 includes a pair of joint main bodies 2A and 2B provided at each joint end portion of the adjacent bottom steel plates 8, and an upright plate of the pair of joint main bodies 2A and 2B. An attachment plate 3 attached over the surface of the portion 2b and a position adjusting mechanism 9 attached to one joint body 2A are provided.
Among these, the joint main bodies 2A and 2B are L-shaped steel made of a flat plate portion 2a lying on the bottom steel plate 8 and an upright plate portion 2b rising upward from an edge of the flat plate portion 2a extending in the longitudinal direction of the bottom steel plate 8. It is composed of members. These joint bodies 2A and 2B are manufactured by processing from a shape steel such as L-shaped steel or a steel plate. The other joint body 2B of the joint bodies 2A and 2B is fixed by fastening the flat plate portion 2a to the bottom steel plate 8 on one side by fastening means constituted by high strength bolts 16 and nuts (not shown). It has come to be. At the time of this fixing, the end edge surface in the longitudinal direction of the joint body 2 </ b> B is fixed so as to align with the joining edge surface of the bottom steel plate 8. One of the joint bodies 2A and 2B is attached to a position adjusting mechanism 9 attached to the bottom steel plate 8. The end edge surface in the longitudinal direction of the joint body 2 </ b> A is also aligned with the joint edge surface of the bottom steel plate 8.
[0017]
The attachment plate 3 is formed of a rectangular plate made of steel, and is attached over both surfaces of the upright plate portions 2b of the pair of joint bodies 2A and 2B, and includes a high strength bolt 5, a nut 6, and a washer 7. The joint main bodies 2A and 2B are joined to each other by being fixed to both the upright plate portions 2b by the fastening means. Therefore, a plurality of through holes 3a and 2c through which the threaded portion of the high-strength bolt 5 passes are formed in each of the attachment plate 3 and the upright plate portion 2b.
[0018]
As shown in FIGS. 2 and 3, the position adjustment mechanism 9 to which the joint body 2A is attached has a plurality of screw members 11 fixed to the upright plate portion 2b of the joint body 2A by welding or the like. Each screw member 11 is manufactured by threading the periphery of a steel bar. Both ends of the screw member 11 are supported by a pair of support members 10 attached to the joining end portion of the bottom steel plate 8. Each support member 10 includes a flat plate portion 10 a lying on the bottom steel plate 8, and an upright portion 10 b having a through hole that rises upward from an edge of the flat plate portion 10 a extending in the longitudinal direction of the bottom steel plate 8 and passes the screw member 11. It is a steel L-shaped member. These support members 10 are manufactured by welding a shape steel such as L-shaped steel or a steel plate. The support member 10 is fixed by fastening the flat plate portion 10 a to the bottom steel plate 8 by fastening means composed of high strength bolts 14 and nuts 15. Since the screw member 11 supported by the support member 10 passes through the through hole of the upright portion 10b, the width direction of the bottom steel plate 8 (the direction of arrow B in FIG. 2), that is, the plate of the upright plate portion 2b of the joint body 2A. Although it is movable in the thickness direction, two nut members 13 are screwed and fixed to both ends of the screw member 11 supported by the pair of support members 10 so as to sandwich the upright portion 10b of the support member 10. Thus, the screw member 11 is fixed to the upright portion 10b of the support member 10 to restrict the movement of the screw member 11. By loosening the nut member 13, the screw member 11 can move in the plate thickness direction of the upright plate portion 2b of the joint body 2A. Since the joint body 2A is fixed to the screw member 11, the joint body 2A is movable together with the screw member 11 in the plate thickness direction of the upright plate portion 2b of the joint body 2A.
[0019]
In addition, two guide members 12A and 12B for guiding the movement of the joint body 2A are provided outside both edges in the longitudinal direction of the flat plate portion 2a of the joint body 2A. The guide member 12B on the joining end surface side of the bottom steel plate 8 is configured by a flat plate member along the edge surface of the flat plate portion 2a of the joint body 2A, and the guide member 12A on the opposite side to the guide member 12B includes the flat plate portion 2a and the upright plate portion. It is comprised with the L-shaped member in alignment with the edge surface of 2b. These guide members 12A and 12B are fastened and fixed to the bottom steel plate 8 by fastening means including a high strength bolt 17 and a nut (not shown).
[0020]
In addition, on the joining line extended in the width direction of the adjacent bottom steel plate 8, the plate 4 is arrange | positioned so that the joint apparatus 1 may be penetrated, and the placed concrete is made not to leak from a joining line.
Next, a method for constructing a bridge using such a composite floor slab will be described with reference to FIGS.
[0021]
In order to build a bridge, a plurality of main members 18 are fixed to the upper surface of the bottom steel plate 8 in advance in the factory by welding. Then, the joint body 2B is fixed to the joint piece end portion of the bottom steel plate 8 by fastening means including a high-strength bolt 16 and a nut, and the position adjusting mechanism 9 having the joint body 2A attached to the joint opposite end portion of the bottom steel plate 8 is made high. The guide members 12A and 12B are fixed by fastening means including a high-strength bolt 17 and a nut. A plurality of reinforcing bars 19 are manufactured in the factory.
[0022]
A plurality of main members 18, joint bodies 2A and 2B, position adjusting mechanism 9, and guide members 12A and 12B fixed to the above bottom steel plate 8 and a plurality of reinforcing bars 19 are carried to the site, as shown in FIG. A plurality of bottom steel plates 8 are sequentially placed along the longitudinal direction of the main girder 20 via stud gibels 21 on the I-shaped main girder 20 arranged at a predetermined interval (about 6 m to 10 m) in the width direction of the bottom steel plate 8. Put. Each bottom steel plate 8 is formed with a through-hole (not shown) through which the stud dowel 21 passes.
[0023]
Thereafter, as best shown in FIG. 2, the plate 4 is disposed so as to penetrate the joint bodies 2 </ b> A and 2 </ b> B on the joining line extending in the width direction of the adjacent bottom steel plate 8. A plurality of high-strength bolts 5 and nuts 6 are tightened together with washers 7 on both surfaces of the upright plate portions 2b of the pair of joint bodies 2A and 2B to join the joint bodies 2A and 2B to each other, and adjacent bottom steel plates 8 is joined.
[0024]
At this time, when the joint main bodies 2A and 2B are displaced in the plate thickness direction of the upright plate portion 2b (the direction of arrow A in FIG. 2), by loosening the nut member 13 of the position adjusting mechanism 9, The screw member 11 and the joint main body 12A are moved to appropriate positions in the plate thickness direction of the upright plate portion 2b to align the upright plate portions 2b of the joint main bodies 2A and 2B, and the nut member 13 is tightened to tighten the screw member 11 and the joint. The main body 2 </ b> A is fixed to the support member 10. Thereafter, the attachment plate 3 is attached to both surfaces of the upright plate portions 2b of the pair of joint main bodies 2A and 2B, and a plurality of high strength bolts 5 and nuts 6 are tightened via washers 7 to connect the joint main bodies 2A and 2B to each other. Join. Thus, in this embodiment, the position adjusting mechanism 9 positions the upright plate portion 2b between the pair of joint bodies 2A, 2B at the joint end portions of the adjacent bottom steel plates 8 in the plate thickness direction. Adjustment work can be performed. Further, when adjusting the position of the joint body 2A, the position adjustment can be performed by loosening and tightening the nut member 13 on the bottom steel plate 8, and no filler plate insertion work or joint body correction work is required. Position adjustment work can be easily performed.
[0025]
Further, when the screw member 11 and the joint body 2A are moved, the movement of the screw member 11 and the joint body 2A is guided by the guide members 12A and 12B, and an unreasonable load is applied to the support member 10 that supports the screw member 11. There is no. The guide members 12A and 12B transmit the tensile force and compressive force to the bottom steel plate 8 together with the screw member 11 and the support member 10 when a tensile force or compressive force acts on the joint body 2A after the bridge is completed. It also has.
[0026]
Further, the joint body 2B, the position adjusting mechanism 9, and the guide members 12A and 12B attached to the joining end portion of the bottom steel plate 8 are fixed to the bottom steel plate 8 by fastening means composed of high strength bolts and nuts. Since no welding work is performed in the vicinity of the joining end portion of the bottom steel plate 8 at the time of work or on-site work, the bottom steel plate 8 is not deformed due to welding, so that the quality of the panel member is not impaired.
[0027]
After joining the adjacent bottom steel plates 8, as shown in FIG. 1, a plurality of reinforcing bars 19 are placed on the main member 18 in a plurality of rows and columns, and concrete 22 is provided around the reinforcing bars 19 and the main member 18. And the panel member and the main girder 20 are integrated. In this state, if the pavement 23 is applied and the rail 24 is installed, the bridge is constructed.
[0028]
As mentioned above, although embodiment of this invention has been described, this invention is not limited to this, A various change can be made. For example, the position adjusting mechanism 9 is attached to only one joint body 2A of the pair of joint bodies 2A and 2B, but may be attached to both the one joint body 2A and the other joint body 2B. . In this case, the other joint body 2 </ b> B is not fixed to the bottom steel plate 8 by the fastening means including the high-strength bolts 16, and the position is adjusted by the position adjusting mechanism 9 in the plate thickness direction of the upright plate portion 2 b. In addition to the L-shaped steel, the joint body may use a T-shaped steel to attach the flange surface to the bottom steel plate. This is because it is sufficient that the upright plate portion can be erected stably with respect to the bottom steel plate.
[0029]
【The invention's effect】
As explained above, according to the joint device for a panel member in the composite floor slab according to claim 1 of the present invention, the joint device is configured such that one joint body of at least one pair of joint bodies is connected to the upright plate portion. Since the position adjustment mechanism that moves in the plate thickness direction is provided, when the pair of joint bodies are displaced in the plate thickness direction of the upright plate portion, at least one joint body is raised by the position adjustment mechanism. Move to an appropriate position in the plate thickness direction of the plate portion, align the upright plate portions of the pair of joint bodies, and perform position adjustment work in the plate thickness direction of the upright plate portions of the pair of joint bodies Can do.
[0030]
Moreover, according to the panel member joint device in the composite floor slab according to claim 2 of the present invention, in the invention according to claim 1, the position adjusting mechanism is a screw member fixed to the one joint body. A support member that is attached to a joining end portion of the bottom steel plate and supports the screw member; and a screw member that is screwed and fastened to the screw member to fasten and fix the screw member to the support member and loosen the screw. A nut member that enables the member to move in the plate thickness direction of the upright plate portion, so that the screw member and one joint member fixed to the screw member by the loosening and tightening operations of the nut member of the position adjustment mechanism Can be adjusted in the plate thickness direction of the upright plate portion, and there is no need for filler plate insertion work or joint body correction work, and the position adjustment work can be easily performed.
[0031]
Furthermore, according to the panel member joint device in the composite floor slab according to claim 3 of the present invention, in the invention according to claim 1 or 2, the position adjusting mechanism guides the movement of the one joint body. Since the guide member is provided, the movement of one joint body can be guided by the guide member, and an excessive load is not applied to the support member that supports the screw member to which the joint body is fixed.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional perspective view of a part of a bridge using a composite floor slab.
FIG. 2 is a perspective view of an embodiment of a joint device according to the present invention.
FIG. 3 is a perspective view of a position adjusting mechanism in the joint device shown in FIG. 2;
FIG. 4 is a partial cross-sectional perspective view of a part of a bridge using a conventional composite floor slab.
FIG. 5 is a perspective view of a conventional joint device.
[Explanation of symbols]
1 is a joint device 2A, 2B is a joint body 2a, a flat plate portion 2b, an upright plate portion 2c, a through hole 3, a contact plate 3a, a through hole 4, and a plate 5 are high strength bolts (fastening means).
6 is a nut (fastening means)
7 is a washer (fastening means)
8 is a bottom steel plate 9, a position adjusting mechanism 10, a support member 10 a, a flat plate portion 10 b, an upright portion 11, a screw member 12 A, a guide member 12 B, a guide member 13, a nut member 14, a high strength bolt 15, and a nut 16, a high strength bolt. 17 is a high-strength bolt 18 is a main member 19 is a reinforcing bar 20 is a main girder 21 is a stud gibber 22 is concrete 23 is a pavement 24 is a railing 101 is a joint device 102 is a joint body 102a is an upright plate 102b is a through hole 103 is attached Plate 103a Through hole 104 Plate 105 High strength bolt 106 Nut 107 Washer 108 Bottom steel plate 109 Main member 110 Reinforcement 111 Main girder 112 Stud gibber 113 Concrete 114 Pavement 115

Claims (3)

It has a panel member which consists of a plurality of bottom steel plates, a main member attached on each bottom steel plate, and a reinforcing bar arranged on the main member, and the adjacent bottom steel plates among the panel members are connected by a joint device. In the joint device of the panel member used for the composite floor slab configured by joining concrete to the panel member,
The joint device is attached across a pair of joint main bodies provided at each of the joining end portions of the adjacent bottom steel plates, and the surfaces of the upright plate portions of the pair of joint main bodies, and the upright plates are attached by fastening means. An attachment plate that is fixed to a joint and joins the joint bodies together, and a position adjustment mechanism that moves at least one joint body of the pair of joint bodies in the plate thickness direction of the upright plate part. A joint device for panel members in a composite floor slab. The position adjusting mechanism is fixed to the one joint body, a screw member fixed to the joint end of the bottom steel plate, a support member for supporting the screw member, and screwed to the screw member. 2. The nut member according to claim 1, further comprising: a nut member that clamps and fixes the screw member to the support member, and allows the screw member to move in a plate thickness direction of the upright plate portion when loosened. Joint device for panel members in composite floor slabs. 3. The joint device for panel members in a composite floor slab according to claim 1, wherein the position adjusting mechanism has a guide member for guiding the movement of the one joint body.

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