JP2013036185A - Reinforcement structure provided with joint hardware portion and opening hole part arranged side by side - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structural reinforcement structure in which an opening hole part is provided in the same member provided with a joint hardware and which solves the structural problem caused by the joint hardware and the opening hole part.SOLUTION: A reinforcement structure reinforces main structure parts of a building made of reinforced concrete, steel framed reinforced concrete or the like by using a joint hardware 1 for each of joints of main reinforcements 2 of the same members of the main structure parts of the building and providing an opening hole part 6 beside the joint hard ware 1 portion. The joint hardware 1 portion, ensuring a dimension allowing gathering shear reinforcements 4a wound around the main reinforcements 2 at the end outer position of the joint hardware 1 and opening hole part reinforcements 7 arranged around the opening hole part 6 to be individually arranged side by side or allowing the opening hole part reinforcement 7 to enter the arrangement position of the gathering shear reinforcements 4a and to be arranged there, and the opening hole portion 6 are arranged side by side between the opening hole part side end of the joint hardware 1 and the joint hardware 1 side end of the opening hole part 6.

Description

  The present invention uses a fitting hardware as a joint means for reinforcing bars in a main structure part such as a beam or a column of a structure or structure (hereinafter simply referred to as a structure) such as a reinforced concrete structure or a steel reinforced concrete structure or a structure such as civil engineering, The present invention relates to a structure in which an opening portion and an opening portion (hereinafter referred to as an opening portion) are provided side by side with a joint hardware arrangement portion and the joint hardware portion and the opening portion are reinforced.

  2. Description of the Related Art In recent years, sleeve-shaped joint hardware has been used as a joint means for reinforcing steel bars used in main structural parts of structures such as reinforced concrete structures or steel reinforced concrete structures. As shown in the dotted line of FIG. 6, the joint hardware has a structure in which reinforcing bars are inserted from both ends thereof (hereinafter, the reinforcing bars using joint fittings are referred to as main bars) and are fixed inside the joint hardware. The outer diameter of the fitting hardware is larger than the main bar diameter. Accordingly, as an effective means for reinforcing the shearing force of the main structure portion, a shear reinforcing bar such as a stirrup or a hoop is provided at the part where the joint hardware is disposed, and the outermost positions at positions where the shear reinforcing bars are opposed to each other. Between the outer walls of the joint hardware positioned at the position of the joint hardware, they are bridged in small intervals or closely arranged or continuously in a spiral shape (hereinafter collectively referred to as “winding”). However, as described above, since the joint hardware has a large diameter, the shear reinforcement bars wound between the outer walls are closer to the atmosphere than those wound on the outermost side of the main bars as other positions. It will protrude to the (concrete surface side), so that the concrete part with the cover thickness required for the structure will protrude outward from other positions, which is not only the part concerned but also other parts It was necessary to change the design to increase the cover thickness of the entire part or move the position of the main muscle inward (lower the position of the main muscle), and the design change and construction were not efficient and economical.

  Therefore, as shown in FIG. 6, a plurality of or predetermined shear reinforcements are provided outside the entrance portion of the main bar which is the end of the joint hardware A without wrapping the shear reinforcement B between the joint hardware A at opposite positions. Wrapping around the main bar a single bar and a plurality of rebars, or a rebar that has been rolled several times, or a single bar that has been bundled in advance, or a single bar that has been bundled together. Various forms such as pre-bundled shear reinforcing bars are assumed, but these are collectively called aggregated shear reinforcing bars or aggregated shear reinforcing bars in which reinforcing bars are bundled), and the shear reinforcing bar B and the aggregated shear reinforcing bar C The structure has a structure that can withstand a predetermined shearing force generated in the portion so as not to affect the cover thickness. FIG. 6 shows an embodiment in which the joint hardware A is provided in the horizontal direction, but the structure is the same in the vertical direction of a column or the like.

  On the other hand, also in the opening portion, a portion where the opening portion is provided is wound with a shear reinforcing bar so as to pass through the opening portion between the upper and lower or left and right main bars, or the shear reinforcing bar is cut. Since this is impossible due to the structure, it is necessary to separately provide a hole reinforcing bar dedicated to the opening at a location surrounding the opening.

  In the beam or column of the main structure part constituting the above structure, there may be a design in which an opening portion must be provided in the same member as the beam or column provided with the joint hardware. In that case, at least the joint shear reinforcement bar and the aperture reinforcement bar of the joint bracket are separately provided from the entrance part of the main bar which is one or both ends of the joint metal part to the place where the aperture part is provided. The position of the joint hardware and the opening portion is determined after securing the dimension that the opening reinforcing bar enters the bar arrangement position of the aggregated shear reinforcing bar and can arrange the reinforcing bar.

JP-A-7-3942 JP 2002-356953 A

  In view of the above situation, the present invention has a structure in which an opening is provided in the same member provided with a fitting, and the joint is provided in order to solve the structural reinforcement problem caused by the fitting and the opening. In the case of the intensive shear reinforcement for reinforcing the hardware, each of the intensive shear reinforcement located on the side of the aperture and the aperture reinforcement located on the side of the joint on the side of the aperture Can be arranged separately between the two, or the hole reinforcement bar enters the bar arrangement position of the aggregated shear reinforcement bar to secure the dimension that can be arranged, and the joint hardware and the hole part are attached to the same member. The present invention relates to a reinforcing structure of a main structural part of a structure that has no structural problem even if it is additionally provided.

  The present invention uses joint fittings for joints of main reinforcing bars to the same members of the main structural parts of structures such as reinforced concrete structures or steel reinforced concrete structures, and provides opening portions adjacent to the joint hardware parts to reinforce each of them. In the reinforcing structure, the joint shear reinforcement bar wound around the main bar at the outer position of the end of the joint hardware and the opening between the end of the joint hardware on the opening side and the end of the joint on the joint hardware side. Whether each reinforcing bar of the opening part reinforcing bar arranged around the hole part can be arranged separately or ensure that the opening part reinforcing bar enters the bar arrangement position of the aggregated shear reinforcing bar and can be arranged It is characterized by a reinforcing structure in which a joint metal part and an opening portion are arranged side by side.

  Further, the opening portion reinforcing bar is characterized by a reinforcing structure in which a joint metal part including an opening portion surrounding reinforcing bar surrounding the periphery of the opening portion and an opening portion are arranged side by side. And

  Further, the aggregated shear reinforcing bar and / or the edge reinforcing bar has a reinforcing structure in which a joint metal part formed by closely arranging a plurality of shear reinforcing bars in the longitudinal direction of the main structure part and an opening part are disposed side by side. Features.

  In addition, the aggregated shear reinforcement and / or the hole reinforcement include a joint metal part and an opening portion formed by arranging a plurality of shear reinforcement bars in a concentrated state with small intervals in the longitudinal direction of the main structure portion. It features a reinforcing structure that is placed side by side.

  Further, the aggregated shear reinforcing bar and / or the edge reinforcing bar is characterized by a reinforcing structure in which a joint metal part formed as one reinforcing bar or a reinforcing bar obtained by winding a single reinforcing bar several times and an opening portion are disposed side by side. To do.

  Further, the opening portion surrounding reinforcing bar is characterized by a reinforcing structure in which a joint metal part formed by combining a linear member and an oblique member and an opening portion are disposed side by side.

  Further, the opening portion surrounding reinforcing bar is provided with a joint metal part and an opening portion formed by appropriately combining a rectangular member and a polygonal member, or between polygonal members, or a polygonal member and a bending member or mutual bending members. Features a reinforced structure.

  Further, the opening portion surrounding reinforcing bar has a reinforcing structure in which a joint metal part and an opening portion which are extended along the longitudinal direction of the opening portion and are formed as a spiral reinforcing bar surrounding the opening portion are arranged side by side. Features.

  Furthermore, the above-mentioned opening portion surrounding reinforcing bars are connected to a joint metal part connected to a main reinforcing bar, a shear reinforcing bar, an edge reinforcing bar, an aggregated shear reinforcing bar, a core reinforcing bar, and other reinforcing bars around the opening. It is characterized by a reinforcing structure with a hole.

  The present invention eliminates the need to wind a shear reinforcement bar between the outer walls of the joint metal body facing each other by winding an aggregate shear reinforcement bar around the main bar outside the end of the joint metal, The shear reinforcement bars do not protrude outward from the part, the increase in the cover thickness of the concrete is prevented, the design is not changed to move the position of the main bars inward, and the increase in the amount of concrete usage is eliminated. Furthermore, normal design and construction can be performed, and it is no longer uneconomical.

  Further, in the opening portion, an opening portion reinforcing bar such as a hole reinforcing reinforcement and an opening portion surrounding reinforcing bar surrounding the periphery of the opening portion is provided between the main bars located above and below or right and left around the opening portion. This makes it possible to effectively reinforce the aperture.

  In addition, the above-mentioned joint shear reinforcing bar on the opening side of the joint metal, and the perimeter reinforcing bar on the joint part on the side of the joint metal side of the opening part and the reinforcement at the edge of the joint are separately provided. By securing a dimension between the joint hardware and the opening portion, the joint hardware part can be placed in the same member by ensuring that the opening reinforcement can enter the bar arrangement position of the aggregated shear reinforcement and arrange the reinforcement between the joint hardware and the opening. And the opening portion can be arranged side by side, making it possible to rationally meet the required design.

  Further, as the opening portion surrounding reinforcing bars surrounding the opening portion, reinforcing bars having diagonal members or curved members and linear members continuous therewith are arranged, and at least a part thereof is wound between the opposing main bars. It is possible to obtain a strong reinforcement by overlapping the reinforcing reinforcement at the hole or by fixing it at a position close to it, and to obtain an effective reinforcement of the opening portion.

The side view of the longitudinal direction of the reinforcement structure which arranged joint metal part and opening part of the main structure part of a structure side by side. The top view of the longitudinal direction of the reinforcement structure which arrange | positioned the joint metal part and opening part of the main structure part of the structure side by side. (A) Cross-sectional view of the opening portion reinforcing structure in the lateral direction, (b) Cross-sectional view of the other embodiment, (c) Cross-sectional view of the other embodiment. The side view of the longitudinal direction of the other Example of the reinforcement structure which arranged joint metal part and the opening part side by side. The side view of the longitudinal direction of the other Example of the opening part side of the reinforcement structure which arranged joint metal part and the opening part side by side. The side view which shows the intensive shear reinforcement in the conventional joint metal part.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 and FIG. 2 show an embodiment relating to a reinforcing structure of both of the present invention, in which an opening is provided adjacent to a portion provided with a joint metal fitting for connecting the main bars to each other. 1 is a joint metal for connecting the ends of main bars 2 extending in the left-right or up-down direction of the main structure such as a beam or a column of a structure such as a reinforced concrete structure or a steel reinforced concrete structure, and the insertion of the main bar into the joint metal 1 The longitudinal direction of the main bar 2 is a single reinforcing bar that provides a predetermined shear reinforcement in a concentrated state with close or small spacing between stirrup bars or hoop bars or the like on the outer sides of both ends 3a and 3b. It winds between the opposing main reinforcements 2 located in the upper and lower sides or the outermost right and left along the direction, and it is set as the aggregate shear reinforcement bars 4a and 4b. In addition, since the Example has shown the beam, the main reinforcement 2 in a figure is located up and down.

  The shear reinforcement bars 5 provided in the main structural part such as a beam or a column are wound around the main bars 2 at regular intervals, and in this embodiment, the above-described conventional reinforcement bars 1 are provided at the site where the joint hardware 1 is provided. The shear reinforcing bar 5 is not provided for the reason indicated by the defect. As a result, the joint hardware part becomes a space S where the shear reinforcement bars 5 do not exist, and as a reinforcing means, the joint shear is in close contact with the joint hardware at positions outside the both ends 3a and 3b of the joint hardware 1. The reinforcing bars 4a and 4b are wound and arranged between the main bars 2 facing each other.

  In terms of design, there may be a situation in which the opening 6 must be provided at a position close to the above-described fitting 1 in the same member. At that time, although various dimensions can be considered for the arrangement interval between the joint hardware 1 and the opening 6, it is necessary to take effective reinforcing means in the opening 6 as well as the joint hardware 1. It is possible to place both of them together as long as the distance between them can be reinforced. Therefore, the above-described aggregated shear reinforcing bar 4a located on the side of the opening 6 of the joint hardware 1, the edge reinforcing bar located on the side of the joint metal 1 of the opening 6 described below, and in some cases, the general part shear reinforcing bar. As long as it is possible to arrange the bars so that they can enter, both of them can be installed side by side.

  In this embodiment, the opening portion surrounding reinforcing bars 7 that reinforce the opening portion 6 so as to surround the periphery of the opening portion 6, and the positions adjacent to the opening portion 6, Reinforcing reinforcing bars 8a and 8b are arranged by securing a dimension corresponding to the cover thickness from the opening 6. The edge reinforcing bars 8a and 8b are wound around the opposing main bars 2 and arranged. The opening portion surrounding reinforcing bars 7 surrounding the periphery of the opening portion 6 are arranged in a position overlapping or adjacent to the hole reinforcing bars 8a and 8b so that reinforcement is effective for reinforcement. It becomes.

  In the present embodiment, the opening portion surrounding reinforcing bar 7 is a rectangular or deformed polygonal first reinforcing bar 9 extending from the inside to the outside, and a rectangular or deforming polygonal shape extending from the outside to the inside of the first reinforcing bar 9. The second reinforcing bars 10 are surrounded by a double reinforcing bar. Further, the inside and outside positions of the first reinforcing bar 9 and the second reinforcing bar 10 are reversed, or they are formed in a continuous state, and the shape in which they are triple, quadruple,. It is considered as appropriate depending on the part 6 and the construction situation.

  As shown in FIG. 1, the opening portion surrounding reinforcing bar 7 is provided with an oblique member 11 so as to surround the opening portion 6 toward the upper main reinforcing bar 2 with the one side edge reinforcing bar 8a as a base point. The diagonal member 13 is provided by bending from the bent portion 12 toward the other edge reinforcing bar 8b, and further bent by the bent portion 14 and parallel to the aggregated shear reinforcing bar 4a toward the lower main bar 2. The member 15 is provided, and further, the diagonal member 17 is provided by being bent at the bent portion 16, and the parallel member 19 is bent at the bent portion 18 to be parallel to the main reinforcing bar 2, and is bent at the bent portion 20. A parallel member 23 that is parallel to the hole reinforcing bar 8 that is bent at the bent portion 22 on the other side and is in contact with the base point that is the start position is used as the first reinforcing bar 9 having a polygonal shape as a whole.

  After extending a predetermined length by a parallel member 23 parallel to the perforated reinforcing bar 8 from the bent part 22 which acts as an integral with the first reinforcing bar 9 in a continuous or fixed or intermittent state, The bent member 24 is bent toward the main bar 2 at the bent portion 24, the diagonal member 25 is provided outside the diagonal member 11 in a state parallel to the diagonal member 11, and the bent member 26 is bent at one end of the bent member 26. 12 is in contact with or fixedly or intermittently acting as a unit and extends to the position of the bent portion 27 so as to be parallel to the upper main bar 2 to form a parallel member 28. The diagonal member 29 is bent to the side of the line 4a, the parallel member 31 is provided so as to be parallel to the aggregated shear reinforcement bar 4a by bending at the bent part 30, and extends to the bent part where the bent part 14 is overlapped. From the position of the bent portion 14 to the lower main muscle 2 The diagonal member 17 is bent to be parallel to the diagonal member 17 and is extended to the next bent portion 33. The bent portion 33 is bent and extended toward the hole reinforcing bar 8 side. The diagonal member 34 is returned to the base point that becomes the start portion and is integrated, and the second reinforcing bar 10 having a polygonal shape as a whole is formed.

  In the case of the said Example, the space | interval between the position where the joint metal 1 site | part and the opening part 6 are located is the aggregate shear reinforcement 4a arranged at the edge part 3a which becomes the hole part 6 side of this joint metal 1, and The perforated reinforcing bar 8b arranged on the joint metal 1 side of the opening 6 can be separately arranged, or the perforated reinforcing bar can be arranged by entering the arrangement position of the aggregated shear reinforcing bar. As long as the dimensions can be ensured, the joint hardware 1 and the opening 6 can be disposed side by side in the same member. In addition, the space | interval of this joint metal 1 and the opening part 6 is the space | interval which can mutually provide the number of the normal space | interval shear reinforcement bars 5 between each aggregated shear reinforcement bar 4a and the hole reinforcement bar 8b suitably. It is also possible.

  The first reinforcing bar 9 and the second reinforcing bar 10 form an opening portion surrounding reinforcing bar 7. As shown in FIGS. 3 (a) and 3 (b), the opening portion surrounding reinforcing bar 7 has a beam The reinforcing bars 8a and 8b located on the front side and the back side are arranged between the upper and lower main bars and fixed to them by fixing means 35 and 36 as shown in FIG. Further, in FIG. 3C, the opening portion surrounding reinforcing bars 7 along the core reinforcing bars 37 in addition to the edge reinforcing bars 8 a and 8 b and the main reinforcing bars 2 positioned on the near side and the deep side of the beam. Are fixed to them by a fixing means, and a reinforcing structure of the opening 6 is formed. The core reinforcement 37 may be an embodiment in which the opening portion surrounding reinforcing bars 7 are fixed to the front or back position of the core reinforcement 37 or the both sides of the core reinforcement 37 as a center.

  Aggregate shear reinforcement bars 4a and 4b and edge reinforcement bars 8a and 8b employed in the joint hardware 1 and the opening 6 are arranged by bundling a plurality of shear reinforcement bars in close contact between the opposing main bars 2. Various correspondences are possible, such as ones that are arranged in a concentrated state with small intervals, ones that are wound with a single reinforcing bar.

  FIG. 4 shows an embodiment in which reinforcing holes are reinforced by assembling reinforcing bars in a space between a portion where a reinforcing metal fitting is provided and a portion where an opening is provided. Aggregate shear reinforcement bars 41a by arranging a plurality of shear reinforcement bars, such as stirrup bars or hoop bars, in close contact with each other in a concentrated state at both ends 40a, 40b of the joint metal piece 38, 41b. Moreover, it is good also as a rebar which wound one rebar or one rebar several times. When the opening 42 is provided at a position close to the fitting 38, the fixing portion of the opening surrounding reinforcing bar can be arranged to reach the space S or to penetrate the space. The space S can be a bar arrangement space.

  The opening portion surrounding reinforcing bar 43 surrounding the opening portion 42 of the present embodiment was formed by bending a reinforcing bar extending in the longitudinal direction corresponding to the main bar 39 direction and a reinforcing bar serving as a diagonal member surrounding the opening portion 42. Reinforcing bars that surround the opening 42 are formed by combining reinforcing bars.

  The opening portion surrounding reinforcing bar 43 extends from the one end 40a side of the joint metal piece 38 to the extension member 44 extending in parallel with the main bar 39 in the same direction as the direction extending in the longitudinal direction of the upper main bar 39. A bent portion 46 is provided at a position away from the opening edge of the opening portion 42 through the inner back surface of one of the hole reinforcing bars 45b, and the bent portion 46 is bent toward the lower main reinforcement 39 side. The extension member 47 extends in parallel with the lower main bar 39 in the same direction as the direction extending in the longitudinal direction of the lower main bar 39 and passes through the inner rear surface of the other hole reinforcing bar 45a. The extension member 47 is continuously bent and bent by a bent portion 48, and a first reinforcing bar 50 having a diagonal member 49 provided between the bent portions 46 and 48, and the first reinforcement. The diagonal member 53 between the bent portions 51 and 52 is formed in the same shape as the streak 50, and the diagonal member of the opening portion 42. 9 is formed so as to pass through the opposite side of the opening 42, and the bent portions 51 and 52 are provided with extension members 54 and 55, respectively, thereby forming the second reinforcing bars 56, and the first, The second reinforcing bars 50 and 56 form a rear opening side surrounding reinforcing bar.

  The first reinforcing bar 50 is connected and fixed to the hole reinforcing bars 45a and 45b and, if necessary, the shear reinforcing bar, the main bar 39 or other members by various fixing means 57 such as a binding bar, a clip, and welding. It will be. Similarly to the above, the second reinforcing bar 56 is connected and fixed to the hole reinforcing bars 45a and 45b and, if necessary, the shear reinforcing bar, the main bar 39, or other members by the fixing means 58. .

  On the other hand, the opening portion surrounding reinforcing bar 43 arranged so as to overlap the front side of the first and second reinforcing bars 50 and 56 is the same as the direction extending in the longitudinal direction of the upper main bar 39 from the joint hardware 38. It passes through the extension member 59 extending parallel to the upper main bar 39 in the direction and the inner back surface of one of the hole reinforcing bars 45a, and is separated from the hole edge of the hole part 42 toward the joint metal 38 side. A bent portion 60 is provided at the position, bent from the bent portion 60 to the lower main reinforcing bar 39 side, passes through the inner back surface of the other hole reinforcing bar 45b, and extends in the longitudinal direction of the lower main reinforcing bar 39. A third reinforcing bar 64 provided with an oblique member 63 extending to a bent portion 62 that becomes a fold to the extending member 61 that extends in parallel with the lower main bar 39 in the same direction as the direction of setting; The diagonal reinforcing member 67 between the bent portions 65, 66 has the same shape as the third reinforcing bar 64, and the opening portion 42 has the above-described shape. The material member 63 passes through the opposite side of the opening 42, and the bent portions 65 and 66 are provided with extension portions 68 and 69, respectively. 3 and the 4th reinforcement bars 64 and 70 are used as the opening part surrounding reinforcement bars of the front side.

  The third reinforcing bar 64 is connected and fixed to the edge reinforcing bar 45 and, if necessary, the shear reinforcing bar, the main bar 39 or other members by the fixing means 71. Similarly to the above, the fourth reinforcing bar 70 is connected and fixed to the hole reinforcing bars 45a and 45b and, if necessary, the shear reinforcing bar, the main bar 39 or other members by the fixing means 72. .

  By combining the first to fourth reinforcing bars 50, 56, 64, and 70 on the rear surface side and the front surface side in the peripheral portion of the opening portion 42, the opening portion surrounding reinforcement on the near side and the back side of the main structure portion is performed. It is a streak. As shown in FIG. 4, the opening portion surrounding reinforcing bars have a rhombus shape or a polygonal shape as a whole by surrounding the periphery of the opening portion 42 with an extension member and a diagonal member. In the drawings, the diagonal member is expressed in a straight line, but it may be a curved circular member along the circular shape of the opening.

  It goes without saying that the positions of the first and second reinforcing bars 50 and 56 in the above embodiment may be reversed from the positions of the third and fourth reinforcing bars 64 and 70 on the rear surface side.

  In addition, the overlap between the first and second reinforcing bars 50 and 56 and the third and fourth reinforcing bars 64 and 70 in the above embodiment is based on the size of the opening portion 42 from the state shown in FIG. It is also possible to shift to the 38 side or to the opposite direction side. In this case, the position and shape of the opening portion surrounding reinforcing bar 43 can be changed according to the position of the opening portion and the opening diameter. In addition, the positional relationship between the joint hardware and the opening portion can be as close as possible to each other as long as the consolidation effective area of the joint hardware and the consolidation section such as the joint shear reinforcement of the joint hardware does not overlap.

Further, similarly to the cross-sectional views shown in FIGS. 3A and 3B, the aperture surrounding reinforcing bars composed of the first to fourth reinforcing bars 50, 56, 64 and 70 are located on the front side and the back side. Examples can be appropriately adopted such as fixing to a hole reinforcing bar (a shear reinforcing bar, an aggregated shear reinforcing bar, a main bar, or another member as required). Further, as shown in the cross-sectional view of FIG. 3C, the first to fourth reinforcing bars 50, 56, 64, and 70 are connected to the front side hole reinforcing bars (shear reinforcing bars and aggregated shear reinforcements as necessary). In addition to fixing to the reinforcement member (shear reinforcement, aggregated shear reinforcement, main reinforcement or other member, if necessary) and core reinforcement 37, A reinforcing structure to be fixed can be employed. A reinforcement structure in which the first to fourth reinforcing bars 50, 56, 64, and 70 are arranged on both sides of the core bar 37 as a center is also conceivable as reinforcement of the opening portion.
In FIG. 3, as an example of reinforcing bars having up to three rows as opening reinforcing bars, four rows or more are considered depending on the number of main bars and the member thickness. The same applies to the other embodiments.

  Aggregate shear reinforcement bars 40a, 40b and edge reinforcement bars 45a, 45b employed in the joint metal piece 38 and the opening 42 are arranged by bundling a plurality of shear reinforcement bars in close contact between the opposing main bars 39. Various arrangements are conceivable, such as ones that are arranged in a concentrated state with a small interval, one that wraps and arranges one reinforcing bar, one that wraps one reinforcing bar several times, etc.

  FIG. 5 shows another embodiment of the reinforcing structure of the opening portion provided in the joint metal part of the reinforcing bar. The hole is opened at a position away from the aggregated shear reinforcing bar provided at the ends of the upper and lower or left and right joint hardware. A portion 73 is provided.

  A circular, quadrangular, or polygonal shape that is the longitudinal direction of the opening 73 that is continuous from the front edge reinforcing bar 74 to the inner hole reinforcing bar 74 side so as to surround the hole 73. The opening 73 is reinforced by providing a spiral opening surrounding reinforcing bar 75.

  The spiral opening portion surrounding reinforcing bars 75 are extended along the longitudinal direction of the surrounding opening portion 73 which is the outer side of the opening portion 73, and the hole reinforcing bars 74a and 74b and necessary Accordingly, extension members 77 and 78 are provided so that they can be fixed to the inside of the shear reinforcement bar 76, the main bar or other members, and the extension members 77 and 78 are connected and fixed by fixing means 79 and 80.

  It is also possible to provide a support protrusion 81 that holds a cylinder or the like that forms the opening 73. The same applies to the first and second embodiments. In addition, the opening portion surrounding reinforcing bar 75 can extend the extension members 77 and 78 from the intermediate part in the longitudinal direction, and can fix it to the core bar 37. An embodiment in which the core muscle 37 is fixed to the front surface or the back surface of the core muscle 37 or to both surfaces of the core muscle 37 as a center is also conceivable.

  Also in the present embodiment, the types of the aggregate shear reinforcement and the hole reinforcement used for reinforcing the joint hardware and the opening portion and the distance between them are the same as in the first and second embodiments.

Needless to say, it is possible to select an optimum configuration by appropriately combining the first, second, and third embodiments as necessary.
Moreover, in the said Example, although the member used as object was demonstrated as a beam, it can be set as the same reinforcement structure also in other structural members, such as a pillar and a diagonal, without limiting to a beam.

1, 38, A Joint metal 2, 39 Main bars 3a, 3b, 40a, 40b Joint ends 4a, 4b, 41a, 41b, Aggregate shear reinforcement 5, 76 Shear reinforcement 6, 42, 73 Opening 7, 43 , 75 Opening portion surrounding reinforcing bars 8a, 8b, 45a, 45b, 74a, 74b Reinforcing reinforcing bars 9, 50 First reinforcing bars 10, 56 Second reinforcing bars 11, 13, 17, 21, 25, 29, 32 , 34, 49, 53, 63, 67 Diagonal member 12, 14, 16, 18, 20, 22, 24, 26, 27, 30, 33, 46, 48, 51, 52, 60, 62, 65, 66 Bending part 15, 19, 23, 28, 31 Parallel member 35, 36, 57, 58, 71, 72, 79, 80 Fixing means 37 Core core 44, 47, 54, 55, 59, 61, 68, 69 , 77, 78 Extension member 64 Third reinforcement 70 The fourth reinforcement 81 supports the projecting portion

Claims (9)

  In the reinforcement structure that reinforces each of the joint members of the main reinforcement using the joint hardware to the same member of the main structure part of the structure such as reinforced concrete structure or steel reinforced concrete structure, and provided with an opening portion adjacent to the joint hardware part, Between the opening side end of the joint hardware and the joint hardware side end of the opening, there is an aggregate shear reinforcement bar wound around the main bar at the outer position of the end of the joint hardware and around the opening section. Whether each reinforcing bar of the opened hole reinforcing bar that has been arranged can be separately arranged, or the opening reinforcing bar enters the arrangement position of the aggregated shear reinforcing bar to ensure a dimension capable of arranging the reinforcing bar. Reinforcement structure in which a joint hardware part and an opening are arranged side by side.   2. The joint metal part and the opening portion according to claim 1, wherein the opening portion reinforcing bar includes an edge reinforcing bar wound around the main bar and an opening portion surrounding reinforcing bar surrounding the periphery of the opening portion. Reinforced structure arranged side by side.   The joint metal part and the opening part according to claim 2, wherein the aggregated shear reinforcement bar and / or the edge reinforcement part are formed by closely arranging a plurality of shear reinforcement bars in the longitudinal direction of the main structural part. Reinforcement structure that is placed side by side.   3. The joint according to claim 2, wherein the aggregated shear reinforcement and / or the hole reinforcement are arranged by arranging a plurality of shear reinforcements in a concentrated state with a small interval in the longitudinal direction of the main structure portion. Reinforcement structure with a metal part and an opening.   The joint shear reinforcing bar and / or the edge reinforcing bar are formed as a single reinforcing bar or a reinforcing bar obtained by winding a single reinforcing bar several times. Placed reinforcement structure.   6. A reinforcing structure in which a joint metal part and an opening portion are disposed side by side, wherein the opening portion surrounding reinforcing bar is a combination of a linear member and an oblique member.   6. The opening portion surrounding reinforcing bar is formed by appropriately combining a square member and a polygon member, or between polygon members, or a polygon member and a bending member or bending members. Reinforcing structure in which the joint hardware part and the opening are arranged side by side.   The joint metal part according to any one of claims 2 to 5, wherein the opening portion surrounding reinforcing bar is a spiral reinforcing bar extending along the longitudinal direction of the opening portion and surrounding the opening portion. Reinforcement structure that has both a hole and an opening.   3. The perforated opening reinforcing bar is connected to a main reinforcing bar, a shear reinforcing bar, an aggregated shear reinforcing bar, an edge reinforcing bar, a core reinforcing bar, and other reinforcing bars around the opening. A reinforcing structure in which the joint metal part according to any one of 8 to 8 and an opening are disposed side by side.

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