JP2017014866A - Structure reinforcement member and joint structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure reinforcement member capable of largely reducing processing labor and construction labor of a joint member.SOLUTION: Structure reinforcement members A1 and A2 are adjacently arranged on a surface of a structure, and are integrally installed in the structure by filling a filler between the structure and itself, and comprise a reinforcement plate 1 and joint members 12 and 13 for connecting mutual end parts of the adjacent structure reinforcement members A1 and A2. The joint members 12 and 13 comprise irregular parts 12a and 13a joined by mutually meshing when overlapping the mutual joint members 12 and 13 of the adjacent structure reinforcement members A1 and A2, and are constituted so as to connect the mutual joint members 12 and 13 by meshing of the irregular parts 12a and 13a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a structural reinforcement member.

  Conventionally, a steel sheet winding method has been frequently used as a reinforcement measure for structures. In this steel sheet winding method, a plurality of reinforcing steel plates (reinforcing plates) are arranged around structures such as building columns, beams, and piers, and the ends are welded together to connect adjacent reinforcing steel plates. At the same time, an epoxy resin or mortar is filled in the gap between the reinforcing steel plate and the structure.

 Thereby, the reinforcing steel plate installed so as to surround the structure is integrated with the structure, and the bending strength, shear strength, and toughness of the structure can be greatly improved. In addition, it is possible to greatly improve the proof strength against the bulging output that acts in the radial direction of the structure such as a column by a load such as compression.

  On the other hand, as shown in FIGS. 12 and 13, joint members 2 and 3 are integrally provided at the end portion of the reinforcing steel plate 1, and the joint members 2 and 3 at the end portions of the adjacent reinforcing steel plates 1 are overlapped. There is a configuration in which the pair of joint members 2 and 3 are connected by bolting while being engaged (for example, see Patent Document 1). The pair of joint members 2 and 3 are respectively provided with concavo-convex portions (concave and convex portions) 2a and 3a on overlapping surfaces that engage with each other, and the concave and convex portions of the pair of joint members 2 and 3 are formed. By engaging (engaging), the end portions of the adjacent reinforcing steel plates 1 can be firmly connected.

  In addition, the joint members 2 and 3 are formed with recesses and projections by feeding a steel material into a rolling work roll having a concavo-convex processed portion and rolling it, and after the rolling process, the bolt insertion holes 4 are formed. And manufactured. And the structure reinforcement members 5 and 6 are manufactured by attaching the joint members 2 and 3 integrally, such as by welding to the edge part of the steel plate 1 for reinforcement.

  According to the structure reinforcing members 5 and 6 configured by including the joint members 2 and 3 as described above, welding work is unnecessary, installation and fixing work can be easily performed, and a highly reliable reinforcement measure can be taken. It can be applied to the structure at a low cost and in a short time.

Japanese Patent No. 3177730

Here, in the conventional structure reinforcing members 5 and 6, the concave and convex portions of the pair of joint members 2 and 3 are engaged with each other and connected by bolting.
Further, in the case where a bolt storage recess for storing the bolt is formed so that the bolt does not protrude outward from the outer surface of the joint members 2 and 3, and a bolt insertion hole 4 is formed in the bottom surface of the bolt storage recess. There is also.

  For this reason, after rolling the joint member, it is necessary to separately process and provide the bolt insertion hole and the bolt housing recess, which requires a lot of labor and labor. Further, when bolting after engaging the joint member, it is necessary to use a large number of bolts if the joint extension is long.

  In view of the above circumstances, an object of the present invention is to provide a member for reinforcing a structure that makes it possible to significantly reduce the processing labor and construction labor of a joint member.

  In order to achieve the above object, the present invention provides the following means.

  The structural reinforcing member of the present invention is a structural reinforcing member that is disposed adjacent to the surface of the structural body, is filled with a filler between the structural body, and is integrally installed in the structural body. A reinforcing plate, and a joint member that is provided integrally with an end portion of the reinforcing plate and connects the end portions of the adjacent structure reinforcing members. It comprises an uneven portion that engages and joins the joint members of the structural reinforcing members that fit together, and is configured to connect the joint members by engagement of the uneven portions. To do.

  In the structure reinforcing member of the present invention, it is possible to greatly reduce the labor of processing the joint member as compared with the conventional case.

It is sectional drawing which shows the reinforcement structure of the structure which concerns on one Embodiment of this invention, and the member for structure reinforcement. It is a figure which shows the joining state of the joint member of the member for structure reinforcement which concerns on one Embodiment of this invention. It is a figure which shows the coupling member of the member for structure reinforcement which concerns on one Embodiment of this invention. It is a figure which shows the manufacturing apparatus of the coupling member which concerns on one Embodiment of this invention. In the construction method of the structure reinforcement structure which concerns on one Embodiment of this invention, it is the figure used for description of the jig | tool assembly process for attachment. In the construction method of the reinforcement structure of the structure which concerns on one Embodiment of this invention, it is the figure used for description of the reinforcement board standing-up process and the reinforcement board connection process. It is the figure used for description of the reinforcement board raising process in the construction method of the reinforcement structure of the structure which concerns on one Embodiment of this invention. It is a top view which shows the specification of the test body of the member for structural reinforcement used by the verification test. It is a side view which shows the specification of the test body of the member for structural reinforcement used by the verification test. It is a figure which shows the bending test apparatus used by the verification test. It is a figure which shows the bending test result of a verification test. It is a figure which shows the conventional joint structure (a joint member, a reinforcement board, a member for structure reinforcement). It is a figure which shows the conventional coupling member.

  Hereinafter, a structural reinforcing member according to an embodiment of the present invention will be described with reference to FIGS. 1 to 11.

  As shown in FIG. 1, the structural reinforcement members A <b> 1 and A <b> 2 of the present embodiment are members that are applied to a steel sheet winding method as a reinforcing measure for the structural object 10. The structure reinforcing structure B according to the present embodiment includes, for example, a pair of structure reinforcing members A1 and A2 formed in a U-shaped cross section, such as a pillar of a building and a pier, and a column made of reinforced concrete having a rectangular cross section. Are arranged so as to surround the structure 10, and the gap between the pair of structure reinforcing members A1 and A2 and the structure 10 is filled with a filler 11 such as epoxy resin or mortar to reinforce the pair of structures. The structural members A1 and A2 are integrated with the structure 10.

  Further, the structural reinforcement members A1 and A2 of the present embodiment are integrally provided by welding or the like to the reinforcing plate 1 formed in a U-shaped cross section and both end portions (both side end portions) of the reinforcing plate 1, respectively. The two joint members 12 and 13 are arranged so as to surround the structure 10 and connect the ends of the adjacent structure reinforcing members A1 and A2 to each other.

  As shown in FIGS. 1 and 2, the joint members 12 and 13 surround one structure reinforcing member A <b> 1 and the other structure reinforcing member A <b> 2 adjacent to a structure 10 such as a pillar, respectively. In the disposed state, the joint member 12 of one structure reinforcing member A1 and the joint member 13 of the other structure reinforcing member A2 are provided so as to overlap each other.

  In addition, the joint members 12 and 13 include the concave and convex portions 12a and 13a that are engaged with each other when the joint members 12 and 13 are overlapped with each other, and the leading end side and the reinforcing plate across the concave and convex portions 12a and 13a. 1 on the base end side of the one side, and the overlapping surfaces 12b, 12c of the joint members 12 and 13 of the adjacent structural reinforcement members A1 and A2 are engaged with each other in an engaged state. 13b and 13c are provided with front end engaging portions 12d and 13d and base end engaging portions 12e and 13e which are brought into surface contact with each other.

  That is, on the overlapping surface of the concavo-convex portion 12a to be engaged with the other joint member 13 of one joint member 12, there are a plurality of concave portions and a plurality of convex portions for restricting the movement of the reinforcing plate 1 in the adjacent direction. Are alternately arranged. In addition, a plurality of convex portions and a plurality of concave portions for restraining the movement of the reinforcing plate 1 in the adjacent direction are provided on the overlapping surface of the concave and convex portions 13a to be engaged with the one joint member 12 of the other joint member 13. However, the concave portion is formed on the convex portion of one joint member 12 and the convex portion is engaged with the concave portion of one joint member 12 so as to be alternately arranged.

  As shown in FIGS. 2 and 3, the joint members 12, 13 are provided with tip engagement portions 12 d, 13 d, Proximal end engaging portions 12e and 13e are provided on the proximal end side to be joined to the end portion of the reinforcing plate 1, respectively. Further, the joint members 12 and 13 of the present embodiment are such that the thickness dimension H gradually increases from the distal end toward the proximal end (the thickness dimension H gradually decreases from the proximal end toward the distal end). Is formed). In addition, this thickness dimension H means the dimension between the back surfaces 12f and 13f of the joint members 12 and 13, and the virtual line which connects the front-end | tips of a some convex part.

  Further, in the present embodiment, unlike the conventional case, the joint members 12 and 13 are not formed with bolt insertion holes or bolt housing recesses. In addition, although the bolt insertion hole used for temporary fixing etc. may be formed, the bolt accommodation recessed part is not formed in this case.

  And the joint members 12 and 13 of this embodiment which consist of an upper structure are manufactured by rolling a steel material.

  Specifically, for example, as shown in FIG. 4, the joint members 12 and 13 include a pair of work rolls 17 and 18 for rolling that are arranged at predetermined intervals while the rotation axes O1 and O2 are parallel to each other. It is manufactured using the rolling processing device 19 provided.

  One work roll 17 has a processed portion 17a formed in a columnar shape having a constant outer diameter in the direction of the rotation axis O1.

  The other work roll 18 is formed in a truncated cone shape in which the processed portion 18a gradually decreases in diameter from one side to the other side toward the rotation axis O2. Further, the other work roll 18 is formed with an engagement surface of the joint members 12 and 13 orthogonal to the rotation axis O2 on the surface of the processed portion 18a, and a concave portion and a convex portion including the engagement surfaces 14 and 15. A plurality of annular projections 21 to be formed, and provided on the front side and the rear side in the direction of the rotation axis O1 with the plurality of annular projections 21 interposed therebetween, and the front end engaging portions 12d, 13d of the joint members 12, 13; A distal end engaging portion forming portion 22 and a proximal end engaging portion forming portion 23 for forming the proximal end engaging portions 12e and 13e, respectively, are formed.

  In the rolling processing device 19, when the steel material (workpiece) 20 is fed between the pair of work rolls 17 and 18, the annular protrusion 21 of the processing portion 18 a of the other work roll 18 is on one surface of the steel material 20. The steel material 20 is rolled through between the pair of work rolls 17 and 18, and concave and convex portions 12a and 13a including concave portions and convex portions are formed on one surface.

  Next, an example of a method of constructing the reinforcing structure B of the structure including the structure reinforcing members A1 and A2 of the present embodiment having the above-described configuration will be described.

  First, as shown in FIG. 5, for example, a mounting jig 31 is assembled and fixed to the base portion of a column (structure) 10 erected on the foundation portion 30. The mounting jig 31 includes a base 32 fixed to the base portion, and two ladder-shaped reinforcing plate mounting portions that are rotatably attached to the base 32 and rotate in a direction to sandwich the column 10. 33 (attachment jig assembling step).

  Then, the reinforcing plate mounting portion 33 of the mounting jig 31 is rotated and brought down on the base portion 30, and the structural reinforcing members A 1 and A 2 are respectively placed on the reinforcing plate mounting portion 33 on the inner surface side. Place it up. As shown in FIGS. 5 and 6, the reinforcing plate mounting portion 33 is rotated in the direction in which the pillar 10 is sandwiched (in the direction of the arrow in the drawing), and the structure reinforcing members A1 and A2 in the mounted state are moved. Let each stand up. Thus, the pair of structural reinforcement members A1 and A2 are disposed so as to surround the column 10 in a state of facing each other and in a state of providing a certain gap between the column 10 (reinforcing plate). Standing process).

  Also, at this time, a spacer for securing a certain gap with the pillar 10 on the inner surface side of the upper end portion of the pair of structural reinforcement members A1 and A2 connected, and mortar to be injected in a subsequent process are filled. A sealing member or the like for preventing leakage of the material 11 is attached.

  And while standing up a pair of structure reinforcement member A1 and A2 as mentioned above, the joint members 12 and 13 of one structure reinforcement member A1 and the other structure reinforcement member A2 are piled up, The concave and convex portions 12a and 13a of the joint members 12 and 13 are engaged with each other (reinforcing plate connecting step).

  At this time, a pair of joint members 12 and 13 that are connected by engaging the concavo-convex portions 12a and 13a with each other are preliminarily coated with an adhesive on the joint surface (engagement surface) or clip-shaped. The joint members 12 and 13 are temporarily fixed with a jig or the like.

  Next, as shown in FIG. 7, the assembled pair of structure reinforcing members A <b> 1 and A <b> 2 are raised upward along the column 10, and the upper ends of the pair of structure reinforcing members A <b> 1 are connected to the beam on the column 10. 34 is brought into contact with the lower part. At this time, the temporary fixing bolts are passed through the temporary fixing through holes formed in the lower parts of the structural reinforcement members A1 and A2, and the temporary bolts formed in the pillars 10 at the positions corresponding to the temporary fixing through holes. By inserting into the fixing hole, the structural reinforcement members A1 and A2 are temporarily fixed so as not to slip off. Further, the above-described reinforcing plate standing step, reinforcing plate connecting step, and reinforcing plate raising step are repeated, and a plurality of structural reinforcement members A1 and A2 are attached to the entire peripheral surface of the column 10 in a temporarily fixed state (reinforcing plate). Lifting process).

  After temporarily fixing all the structural reinforcement members A1 and A2, the structural reinforcement members A1 and A2 are permanently fixed. Further, the upper ends of the structure reinforcing members A1 and A2 are sealed using the sealing members, respectively. The structural reinforcement members A1 and A2 adjacent to each other in the vertical direction are connected and fixed appropriately by welding or the like (reinforcing plate fixing step).

Next, the filler 11 such as mortar is injected and filled into the gaps between the structural reinforcement members A1 and A2 and the pillars 10, and is cured until the filler 11 is sufficiently solidified (filler injection step).
Finally, the mounting jig 31 is disassembled, and the construction of the reinforcing structure B of the structure of this embodiment is completed.

  In the structural reinforcement members A1 and A2 (structural reinforcement structure B) of the present embodiment configured as described above, the filler 11 is cured and integrated with the column 10, and thus these structural objects. The joint members 12 and 13 of the reinforcing members A1 and A2 are connected to each other by meshing the concavo-convex portions 12a and 13a, and it is possible to ensure sufficient connection strength and proof stress without using bolts as in the conventional case. Become.

  Therefore, according to the structural reinforcement members A1 and A2 (structural reinforcement structure B) of the present embodiment, the joint members 12 and 13 can be suitably reinforced while the structural members are preferably reinforced. This makes it possible to greatly reduce the machining effort.

  Here, the result of the verification test performed in order to confirm the performance of the joint members 12 and 13 of the structural reinforcement members A1 and A2 according to the present invention will be described.

  In this demonstration test, the specifications of the test bodies of the structural reinforcement members A1 and A2 were as shown in Table 1, FIG. 8, and FIG. And the tension test and the bending test were done.

  In the tensile test, both ends of the test body are fixed to a testing machine, a tensile force is applied to the test body, and the base plate breaks the base plate of the reinforcing plate (steel plate) 1, so that the performance of the joint members 12 and 13 is affected by the base material strength. It was confirmed whether or not it is equal to or greater than. The number of test bodies was 10 in total, 5 for reinforcing plate thicknesses of 6, 9 mm and 12 for 14 mm.

  In the bending test, as shown in FIG. 10, both ends of the test body were fixed horizontally and loaded on the center portion. It was confirmed that the joint members 12 and 13 did not come off even when the maximum deflection was 0.21 times the side length L (= 0.21 × L = 0.21 × 1000 = 210 mm). Here, 0.21 × L is the amount of displacement when the rectangular steel plate is deformed into a circle. The number of test bodies was two in total, one for each of the reinforcing plate thicknesses of 6, 9 mm and 12, 14 mm.

Table 2 shows the results of the tensile test.
From this result, it was confirmed that all the test bodies were destroyed by the base material fracture of the reinforcing plate (steel plate) 1, and the performance of the joint members 12 and 13 was equal to or higher than the base material strength. The tensile strength of the reinforcing plate 1 was 400 N / mm ² or more, which is the standard value of SS400.

FIG. 11 (FIG. 11 (a) is for a reinforcing plate thickness of 6, 9 mm, and FIG. 11 (b) is a reinforcing plate thickness of 12, 14 mm) shows the result of a bending test.
From this result, it was confirmed that the joint members 12 and 13 did not come off even when the maximum deflection was 210 mm, and sufficient deformation followability of the joint members 12 and 13 was confirmed.

  Therefore, in the structure reinforcing members A1 and A2 (structure reinforcing structure B) according to the present invention, it is proved that the desired excellent performance can be sufficiently obtained without using bolts as in the prior art. It was.

  As mentioned above, although one Embodiment of the member for structure reinforcement which concerns on this invention was described, this invention is not limited to said one Embodiment, It can change suitably in the range which does not deviate from the meaning.

  For example, in the present embodiment, the structure 10 to be reinforced is described as being a reinforced concrete column. In addition, the structure according to the present invention may be other than a column member such as a horizontal member such as a truss beam or a beam member such as a diagonal member. Furthermore, it is not necessary to limit the cross-sectional shape of a structure such as a column or beam to a rectangle (square).

  In the present embodiment, the structure reinforcing member according to the present invention is assumed to be a member applied to the steel sheet winding method, and the reinforcing plate 1 is a steel plate. If the reinforcing plate can be installed so as to surround the structure 10 to obtain a reinforcing effect, in addition to the steel plate, for example, a fiber material such as a stainless steel plate, a duralumin plate, an aluminum plate, or glass fiber is used as the reinforcing material. It may be composed of other materials such as fiber reinforced plastic (FRP).

  Further, the joint members 12 and 13 have been described as being integrally provided by welding to the reinforcing plate 1, but the joint members 12 and 13 may be attached to the reinforcing plate 1 using other joining means such as bolt joining. Of course.

  Further, in the structural reinforcement members A1 and A2 (structural reinforcement structure B) according to the present invention, a desired excellent performance can be obtained sufficiently without using bolts as in the prior art. Temporary fixing bolts may be used for the joints as slip stoppers after the members are engaged and before the gap between the reinforcing steel plate and the structure is filled. In that case, the number of bolts far smaller than that used as a structural material is sufficient. In addition, as a stopper, a method of fixing with a clip-shaped jig, a method of applying an adhesive to the joint surface, or the like can be considered.

1 Steel plate for reinforcement (reinforcement plate)
2 Conventional joint member 2a Concavity and convexity 2b Superposition surface 2c Superposition surface 2d Front end engagement portion 2e Base end engagement portion 3 Conventional joint member 3b Superposition surface 3c Superposition surface 3d Front end engagement portion 3e Base end engagement Part 4 Bolt insertion hole 5 Conventional structure reinforcing member 6 Conventional structure reinforcing member 10 Structure (column)
11 Filler 12 Joint member 12a Uneven portion 12b Overlapping surface 12c Overlapping surface 12d Tip engaging portion 12e Base end engaging portion 12f Back surface 13 Joint member 13a Uneven portion 13b Overlapping surface 13c Overlapping surface 13d Tip engaging portion 13e Base end engaging portion 13f Back surface 14 Engaging surface 15 Engaging surface 17 Work roll 17a Processing portion 18 Work roll 18a Processing portion 19 Rolling processing device 20 Steel material 21 Annular protrusion 22 Tip engaging portion forming portion 23 Base end engaging portion Forming part 30 Base part 31 Mounting jig 32 Base 33 Reinforcement plate placement part A1 Structure reinforcement member A2 Structure reinforcement member B Structure reinforcement structure H Thickness dimension O1 Rotating axis O2 Rotating axis P Reference plane

The present invention relates to a structure reinforcing member and a joint structure .

In view of the above circumstances, an object of the present invention is to provide a structure reinforcing member and a joint structure that can greatly reduce the labor and construction labor of a joint member.

The structural reinforcing member of the present invention is a structural reinforcing member that is disposed adjacent to the surface of the structural body, is filled with a filler between the structural body, and is integrally installed in the structural body. A reinforcing plate, and a joint member that is provided integrally with an end portion of the reinforcing plate and connects the end portions of the adjacent structure reinforcing members. It comprises an uneven portion that engages and joins the joint members of the structural reinforcing members that fit together, and is configured to connect the joint members by engagement of the uneven portions. To do.
Further, the joint structure of the present invention includes a pair of joint members, and the joint member includes an uneven portion that meshes and joins the joint members when the joint members are overlapped with each other. The coupling member is configured to be connected to each other.

In the structure reinforcing member and the joint structure of the present invention, it is possible to significantly reduce the labor of processing the joint member as compared with the conventional case.

It is sectional drawing which shows the reinforcement structure of the structure which concerns on one Embodiment of this invention, and the member for structure reinforcement. It is a figure which shows the joint structure (joining state of the joint member of the member for structure reinforcement) which concerns on one Embodiment of this invention. It is a figure which shows the coupling member of the member for structure reinforcement which concerns on one Embodiment of this invention. It is a figure which shows the manufacturing apparatus of the coupling member which concerns on one Embodiment of this invention. In the construction method of the structure reinforcement structure which concerns on one Embodiment of this invention, it is the figure used for description of the jig | tool assembly process for attachment. In the construction method of the reinforcement structure of the structure which concerns on one Embodiment of this invention, it is the figure used for description of the reinforcement board standing-up process and the reinforcement board connection process. It is the figure used for description of the reinforcement board raising process in the construction method of the reinforcement structure of the structure which concerns on one Embodiment of this invention. It is a top view which shows the specification of the test body of the member for structural reinforcement used by the verification test. It is a side view which shows the specification of the test body of the member for structural reinforcement used by the verification test. It is a figure which shows the bending test apparatus used by the verification test. It is a figure which shows the bending test result of a verification test. It is a figure which shows the conventional joint structure . It is a figure which shows the conventional coupling member.

Hereinafter, a structure reinforcing member and a joint structure according to an embodiment of the present invention will be described with reference to FIGS.

Further, the structural reinforcement members A1 and A2 of the present embodiment are integrally provided by welding or the like to the reinforcing plate 1 formed in a U-shaped cross section and both end portions (both side end portions) of the reinforcing plate 1, respectively. And two joint members 12 and 13 (joint structure) for connecting the ends of the adjacent structure reinforcing members A1 and A2 disposed so as to surround the structure 10. Yes.

In addition, the pair of joint members 12 and 13 constituting the joint structure of the present embodiment are respectively concavo-convex portions 12a and 13a and concavo-convex portions 12a and 13a that are engaged with each other when the joint members 12 and 13 are overlapped with each other. With the concave and convex portions 12a and 13a of the joint members 12 and 13 of the adjacent structure reinforcing members A1 and A2 being engaged with each other. Are formed with front end engaging portions 12d and 13d and base end engaging portions 12e and 13e that engage with each other by bringing the overlapping surfaces 12b, 12c, 13b, and 13c into surface contact with each other.

Therefore, according to the structure reinforcing members A1 and A2 (reinforcing structure B of the structure) and the joint structure of the present embodiment, it is possible to suitably reinforce the structure, and compared with the conventional joint member. This makes it possible to greatly reduce the processing labor of 12 and 13.

Therefore, in the structure reinforcing members A1 and A2 (structure reinforcing structure B) and the joint structure according to the present invention, the desired excellent performance can be sufficiently obtained without using bolts as in the prior art. Has been demonstrated.

As mentioned above, although one embodiment of the member for structural reinforcement and joint structure concerning the present invention was described, the present invention is not limited to the above-mentioned one embodiment, and can be suitably changed in the range which does not deviate from the meaning. is there.

Claims (1)

A structure reinforcing member that is arranged adjacent to the surface of the structure and is filled with a filler between the structure and installed integrally with the structure,
It is provided with a reinforcing plate and a joint member that is integrally provided at the end of the reinforcing plate, and connects the ends of the adjacent structural reinforcing members,
The joint member includes a concavo-convex portion that meshes and joins when the joint members of the adjacent structural reinforcement members are overlapped, and is configured such that the joint members are connected by the engagement of the concavo-convex portions. A structural reinforcing member.

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