JP2662570B2 - Column and beam joint structure of concrete structure and its construction method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a joint structure between a column and a beam in a concrete structure and a construction method thereof. "Conventional technology and its problems" For example, when building a reinforced concrete structure,
Conventionally, the reinforcing bars at the joints of columns and beams are generally assembled on site. However, the work of arranging the joints of the column and the beam in such a site is extremely troublesome because the arrangement of the reinforcing bars is complicatedly intersecting from up and down, right and left, and front and back, and furthermore, it is necessary to ensure accuracy (for example, shear reinforcement). The arrangement of the main bars, beam bars, and column bars is difficult, and its improvement has been awaited. By the way, as a rebar arrangement alternative to on-site assembly,
A plurality of column main bars or beam main bars are bound by shear reinforcing bars (such as stirrups or stirrups) and assembled into a unit (column structural member, beam structural member) having a predetermined size. There is a construction method for constructing a column and a beam of a building while reassembling units of a column and a beam. To explain an example of the operation procedure of such a construction method, first, a structural member for a column not having a shear reinforcement at the upper end for one layer is installed at a construction position, and then two beams are provided at the upper end. Are preassembled so as to be orthogonal to each other on the same plane, and the connection unit of the beam main reinforcement is suspended upward by a crane or the like. Then, the position of the connection unit of the beam main reinforcement suspended by a crane or the like is set so that the column main reinforcement and the beam main reinforcement intersect each other, and the column main reinforcement penetrates a gap formed by the beam main reinforcement. After the adjustment, the connection unit of the beam main reinforcement is gradually lowered to a predetermined position, and then the position is fixed by each main reinforcement and the auxiliary reinforcement. In this way, the column main reinforcement is arranged between the plurality of beam main reinforcements. Thereafter, the structural member for the beam is connected to the connection unit of the beam main reinforcement, and the main reinforcement is connected by a joint. By repeating this, columns and beams of the reinforced concrete structure are constructed. However, even with such a construction method, problems remain, for example, in the following points. When arranging a column main bar between a plurality of beam main bars, the column main bar and the beam main bar are assembled so that the column main bar penetrates the gap formed by the beam main bar. If there is, it is difficult to adjust the displacement, and it is difficult for the connection unit of the main beam to drop down to the predetermined position. Since the upper end of the column main bar (portion used as the connection) penetrates the gap formed by the beam main bar, it takes a long time to adjust the position of the connection unit of the beam main bar, and there is a danger to workers who perform horizontal position adjustment. The nature also increases. It is a structural weak point because it is not possible to arrange the shear reinforcement in the connection part of the column. The present invention has been made in view of the above circumstances, and provides a joint structure between a column and a beam in a concrete structure capable of performing a reinforcing work of a joint between a column and a beam in a short time and with high accuracy, and a method of constructing the joint structure. The purpose is to provide. [Means for Solving the Problems] Accordingly, in the joint structure of the first invention, a column structural member assembled by a plurality of column main bars and a plurality of shear reinforcing bars, a plurality of beam main bars and a plurality of shear reinforcing bars. A structural member for a beam assembled by the above, and a connection member which is set at a predetermined position of the structural member for a column and connects the structural member for a beam in an axial direction perpendicular to a longitudinal direction of the structural member for a column. The joint structure includes a plurality of joint members corresponding to upper and lower beam main reinforcements of the beam structural member, respectively, arranged in parallel in the width direction of the column structural member at an interval equal to the mutual interval of the beam main reinforcements. In this state, the column structural member is penetrated, and the joint member is inserted into a mesh between the column main reinforcing bar and the shear reinforcing bar, and upper and lower beam main reinforcing bars of the beam structural member are connected to both ends thereof. Upper and lower pair of beam connecting main bars And a connecting bar that is provided only at one end of the pair of upper and lower beam connecting main bars and that integrates the upper and lower beam connecting main bars. When inserted in the mesh with the reinforcing bar, both ends are set to protrude on both sides of the column structural member, and the interval between the upper and lower beam connecting main bars is almost equal to the interval between the beam main bars separated vertically. It is characterized by being set. It is preferable that the column main bar, the beam main bar, the shear reinforcing bar, the beam connecting main bar, and the connecting bar are each formed by solidifying a continuous fiber with a resin material. Further, the construction method of the second invention comprises a step of pre-assembling a column structural member composed of a column main reinforcing bar and a shear reinforcing bar and erecting the column structural member at the construction position, and a pair of upper and lower beams connected to upper and lower beam main reinforcing bars, respectively. A plurality of joint members comprising a beam connecting main bar and connecting bars which are provided only at one end side of the pair of upper and lower beam connecting bars and which are separated from the upper and lower beam connecting bars by a distance substantially equal to the distance between the upper and lower beam main bars. Process, by inserting these joint members in a vertical position and inserting each beam connecting main bar into the mesh of the column main bar and the shear reinforcing bar, each end of the joint member is protruded to both sides of the column structural member. A step of setting a plurality of pillar structural members in the width direction at intervals equivalent to the intervals of the beam main reinforcement, and a step of connecting a beam structural member comprising a beam main reinforcement and a shear reinforcement to both ends of these joint members; Characterized by comprising. According to the present invention, the setting position of the beam structural member can be determined by the simple operation of erecting the structural member for the column, inserting the joint member into the mesh between the main bar of the column and the shear reinforcing bar, and Since the beam structural members can be joined via the members, workability and safety at the site can be improved, and the construction period can be shortened. In addition, if each component (column main bar, beam main bar, shear reinforcing bar, beam connecting main bar, connecting bar, etc.) has a structure in which continuous fiber is covered with resin, the structural members for columns and beams can be reduced in weight. This is preferable because workability at the site can be further improved. "Example" Hereinafter, a joint structure between a column and a beam in a concrete structure according to the present invention and a construction method thereof will be described with reference to Figs. 1 to 5 in accordance with a construction order. Note that, in one embodiment, an example in which the present invention is applied to the case where a joint located between a pillar located in the center of the inside of a structure and a beam connected to the pillar is constructed. (I) Formation of pillar and beam structural members and joint members In the drawings, reference numeral 1 denotes a pillar structural member, 2 denotes a beam structural member, and 3 denotes a joint member. The plurality of pillar structural members 1 extend in the up-down direction and are arranged side by side so as to be located on the sides of a square (16 in this embodiment).
The main column 4 of the book) and a plurality of shear reinforcing bars 5 connecting the column main bars 4 are assembled to a length corresponding to, for example, the height of one layer of the building. A connecting fastener (for example, a sleeve joint) is attached to the upper and lower ends of the column structural member 1, and the column structural member 1 having the same configuration is connected above and below the connecting fastener. ing. The beam structural member 2 includes a beam unit 2a in which a plurality of beam main reinforcements 6 extending in the length direction of the beam and arranged in parallel at intervals in the width direction are held at fixed intervals by a plurality of connection reinforcements 7a.
The beam unit 2a includes a ring-shaped shear reinforcing bar 8 wound around the outer periphery of the beam unit 2a. A lap joint length L is formed at both ends of the beam structural member 2 as shown in FIGS. 2 and 3 and the like, and is connected to the joint member 3 as a lap joint. I have. In the case of the embodiment shown in the drawings, the shear reinforcement 8 leaves a lap portion (lap joint portion) with the joint member 3 and leaves the beam unit 2a at predetermined intervals in the length direction of the beam unit 2a in advance. In addition, a shear reinforcing bar 8 is arranged on the wrap portion after joining with the joint member 3. In addition, as shown in FIG.
If the connecting bars 7a for connecting the upper and lower beam main bars 6 are provided between the upper and lower beam units 2a, the strength of the beam structural member 2 can be improved, and the insertion end 9a of the joint member 3 can be improved. This is preferable because the positioning of the beam structural member 2 with respect to can be easily performed. On the other hand, a plurality of the shear reinforcements 8 provided at every other one of the shear reinforcements 8 are provided with projections 8a projecting from the lower surface thereof. The concrete coating thickness is maintained between the main reinforcement 6 and the main reinforcement 6. In the embodiment shown in the drawings, the shear reinforcing bars 8 are integrated with the beam unit 2a in advance. However, the shear reinforcing bars 8 are not fixed to the beam unit 2a in advance, and the outer periphery of the beam unit 2a is set. After joining with the joint member 3, the shear reinforcing bars 8 may be arranged at regular intervals and integrated with the outer periphery of the beam unit 2a. Next, a joint member 3 for joining the beam structural member 2 to the column structural member 1 will be described. The joint member 3 is provided at predetermined intervals in the width direction of the column structural member 1 and penetrates at right angles to the axial direction thereof. The beam structural members 2 are connected to the beam structural members 2 located on both sides of the beam structural member 1. In one embodiment, the beam structural members 2 are provided with the same number (12) as the main beam 6 of the beam. Are connected in a biaxial direction perpendicular to the length direction of the structural member 1 for a pillar. A specific configuration of the joint member 3 is a pair of upper and lower beam connecting main bars 9 arranged along the upper and lower beam main bars 6 of the beam structural member 2 and connected to the beam main bars 6, respectively. A plurality of (three in the illustrated example) connecting bars 10 provided on one end side of the beam connecting main bar 9 and integrally connecting the beam connecting main bars 9 with an interval substantially equal to the interval between the upper and lower beam main bars 6. Has become. The length of the beam connecting main bar 9 is set such that when the insertion end 9a is inserted into the mesh between the column main bar 4 and the shear reinforcing bar 5, both ends protrude to both sides of the column structural member 1. Have been. Furthermore, the interval between the upper and lower beam connecting main bars 9 is
It is set substantially equal to the interval between the beam main reinforcements 6 that are vertically separated. The connecting bar 10 located at the center of the connecting bars 10 has a lower end 10 a protruding from the lower surface of the beam connecting main bar 9, and is located between the beam forming frame and the beam connecting main bar 9 at the time of setting the beam form. To maintain a predetermined concrete coating thickness. Here, the main reinforcements 2, 6, 9 constituting the column structural member 1, the beam structural member 2, and the joint member 3 and the shear reinforcing bars
As shown in FIGS. 4 and 5, the connecting strips 5 and 8 are formed by solidifying a fiber bundle T composed of a plurality of continuous fibers 21 bound by a resin material 20 as shown in FIGS. It is the configuration that was done. More specifically, taking the column structural member 1 as an example, as shown in FIG. 4, a fiber bundle T composed of a plurality of continuous fibers 21 aligned in a three-dimensional manner is arranged in a three- In addition, as shown in FIG. 5, a crossing portion is formed at the portion of the shear reinforcement, and the respective fibers 21 of the fiber bundle T are bound by the resin material 20. In addition, the intersection of the fiber bundles T (the intersection of the pillar main reinforcement 4 and the shear reinforcing shaft 5) has a fiber group extending in one direction and a fiber group extending in a direction orthogonal thereto. As shown in FIG. 5, the sectional shape is alternately stacked in three or more layers. In addition, since these basic structures are the same also about the structural member 2 for beams and the joint member 3, description about these is abbreviate | omitted. Column structural member 1, beam structural member 2, joint member 3
As the continuous fiber 21 that forms the main component, glass fiber or carbon fiber having light weight and high strength is suitable, but if necessary, other fibers such as synthetic resin fiber, ceramic fiber, and metal fiber are used. Is also good. These fibers may be used in an appropriate combination. As the resin material 20 for binding the continuous fibers 21 of the fiber bundle T, for example, a vinyl ester resin having good adhesiveness to the continuous fibers 21 and itself having sufficient strength is preferably used. Another resin material may be used in accordance with the type of the continuous fiber 21. As other resin materials, unsaturated polyester resin, epoxy resin, phenol resin and the like can be mentioned. The ratio between the resin material 20 and the continuous fibers 21 is appropriately determined in consideration of the type and strength of the continuous fibers 21 and the usage of the structural members 1 and 2 and the like. When the glass fiber or the resin material 20 is a vinyl ester resin, the continuous fiber 21 is about 30 to 70% by volume, and when the fiber 21 is a carbon fiber, for example, 20 to 60%.
%. Continuous fiber 21
Is less than the above, the strength of the structural member 1 is remarkably reduced. On the other hand, if the ratio of the continuous fibers 21 is increased, a reinforcing member having a higher strength is obtained. Relatively expensive materials such as fibers are not preferred in terms of economy. In order to form the column structural member 1, the beam structural member 2, and the joint member 3 as described above, for example, the column structural member 1
In the case of the above, the continuous fibers 21 impregnated with a resin (for example, a cold-setting fluid resin) are hooked on pins or the like provided at positions corresponding to the upper and lower ends of the pillar main bars in a so-called one-stroke manner. Then, continuous fibers 21 impregnated with resin are wound at positions corresponding to the shear reinforcing bars. Then, at these intersections, the fiber groups are always alternately overlapped by at least three or more layers. At this time, the continuous fibers 21
Needs to be tensioned enough to maintain linearity. Here, the supply of the continuous fibers can of course be performed manually, but a method is adopted in which the passage order is automatically executed by mechanical means that operates based on a preset program. Further, the distance between the column main reinforcements 4 or the distance between the shear reinforcing bars 5 constituting the column structural member 1 is determined by the size of the column to be constructed, the required strength, and the like. Twisted cords and braids are also included. The manufacturing method of the beam structural member 2 and the joint member 3 and the like is performed in the same manner as the column structural member 1. (Ii) Installation and Fixing of Column Structural Member As shown in FIG. 1, the column structural member 1 assembled by the column main reinforcement 4 and the shear reinforcement 5 is erected at a predetermined construction position. At this time, the pillar structural member 1
Since the continuous fiber 21 is made by solidifying the continuous fiber 21 with the resin material 20, it is extremely lightweight and easy to handle during transportation, so that it can be constructed manually without using a crane or the like. (Iii) Set of joint members Next, as shown in FIG. 1, the joint members 3 are to be arranged in the width direction of the column structural member 1 at intervals equivalent to the mutual interval between the upper and lower beam main reinforcements 6 and to be constructed. In accordance with the position of the beam, the tip (insertion end) 9a of the beam connecting main bar 9 is inserted into the mesh between the column main bar 4 and the shear reinforcing bar 5 and both ends are projected to both sides of the column structural member 1. Is fixed to the column structural member 1. As a result, the connection structure A that joins the beam structural member 2 in two axial directions perpendicular to the length direction of the column structural member 1 is set on the column structural member 1 (FIG. 2). reference). At this time (when the joint member 3 is inserted), the beam connecting main reinforcement 9 is formed at a factory with higher precision than a plurality of continuous fibers bound by a resin material. Since the insertion operation can be easily performed without interfering with each other due to interference, and since the joint member 3 itself has a lightweight structure in which the continuous fiber 21 is bound by the resin material 20, There are advantages such as that the construction at the site can be improved. The upper and lower beam connecting main bars 9 forming the joint member 3 are integrated by a connecting bar 10, and these beam connecting main bars 9 are fixed in a state of being separated in parallel in accordance with the interval of the vertically extending beam main bars 6, respectively. Therefore, the beam connecting main reinforcement 9 can be easily installed and positioned. (Iv) Construction of structural members for beams And between the structural members for columns 1 built adjacently,
The beam structural member 2 is bridged, and the main beam 6 of the beam structural member 2 is joined to the joint member 3. This joining is performed according to the following procedure. That is, as shown in FIG. 3 and the like, the beam main reinforcement 6 of the beam structural member 2 in which the ring-shaped shear reinforcement 8 is fixed to the outer periphery of the upper and lower beam units 2 a is attached to the beam connection main reinforcement 9 of the joint member 3. And bind them together. Further, the beam connecting main bar 9 of the joint member 3 and the beam main bar 6 of the beam structural member 2 are provided.
As shown in FIG. 2 and the like,
Are arranged symmetrically so that the beam main reinforcing bar 6 is located outside of the beam. Note that this connection form is not limited to the illustrated example. Before joining the beam structural member 2 to the joint member 3, the shear reinforcing bars 8 are inserted at a predetermined pitch around the joint member 3 set on the column structural member 1 as shown in FIG. And attached together, joint member 3
The shear reinforcement bars 8 attached to the lap joints are temporarily attached to both ends of the joint. The temporarily reinforced shear reinforcement 8 secures a space for temporary placement in the joint member 3 separately from the lap joint portion, and temporarily fixes the shear reinforcement 8 in this space. After joining the beam structural member 2 and the joint member 3, the shear reinforcing bars 8 temporarily attached to these lap joints are moved at predetermined intervals, and these are integrated with the outer periphery of the lap joint. Fixed to. As a method of connecting the beam unit 2a to the joint member 3 or the shear reinforcing bar 8, for example, the beam unit 2a may be bound using a binding iron wire or the like used in the conventional reinforcing work. After joining the beam structural member 3 to the column structural member 1 in this manner, the formwork is assembled on the outside thereof, and then concrete is poured into the formwork to integrally form the column and the beam. Can be cast. In the above, by reducing the size of the mesh between the column main reinforcement and the shear reinforcement 5, it is also possible to omit the formwork of the column structural member 1 and to cast concrete of the column. . The on-site assembling work of the beam structural member 2 may be performed after the column and the beam bottom formwork are erected, or may be performed in parallel with or prior to the formwork work. The joint between the column and the beam is constructed as described above. In this construction method, the joint can be extremely easily performed. That is, since each member has a lightweight structure formed by binding and forming the continuous fiber 21 with the resin material 20, the setting work of the beam structural member 1 and the like can be performed manually without using a crane or the like. This is because it can be easily implemented. Moreover, these joining operations are simple operations of inserting the joint member 3 into the column structural member 1 and fixing the beam structural member 2 via the joint member 3.
Further, since the column main reinforcement 4, the beam main reinforcement 6, and the like are all unitized in advance, the workability and transportability at the site are good, and the joining operation can be easily performed. In particular, since the joint member 3 has a planar shape in which the upper and lower beam connecting main bars 9 are connected by the connecting bars 10, the workability when setting it on the column structural member 1 is extremely excellent. Things. That is, beam connection main reinforcement 9
Are connected individually (1
In the case where each of the main structural members 9 is inserted into the column structural member 1, the time and effort required for the structural member 1 are large and each beam connecting main reinforcing bar 9 must be positioned. By previously integrating the beam connecting main reinforcement 9 with the connecting reinforcement 10, the insertion can be performed collectively,
In addition, since the interval between the upper and lower beam connecting main bars 9 is set to be equal to the interval between the upper and lower beam connecting main bars 6, only one of the beam connecting main bars 6 is attached to one of the beam connecting main bars 9 and the other beam main bar is used. 6 is naturally positioned along the other beam connection main reinforcement 9, so that the joint member 3 and the beam structural member 2
Can be performed extremely easily. It should be noted that a plurality of joint members 3 may be integrated in advance in a state where they are arranged in parallel in the lateral direction in advance, and a joint member having a three-dimensional shape corresponding to the cross-sectional shape of the beam structural member 2 may be considered. In such a case, the weight increases and the bulk increases, so that handling during transportation and construction becomes extremely inconvenient, which is not preferable. Further, since each of the members (the column structural member 1, the beam structural member 2, and the joint member 3) has a structure in which the continuous fibers 21 are covered with the resin material 20, the fibers which are the main strength members are It has high corrosion resistance and is extremely advantageous as a structural material. Further, since the surface is formed of a resin as described above, there is an advantage that rough surface processing for improving adhesion to concrete can be easily performed. In the above-described embodiment, the column structural member 1 is described as having a size corresponding to the height of one level of the building. However, the column structural member 1 has a size corresponding to two levels or three levels. The joint member 3 can be easily attached to the pillar structural member 1 in advance, and then can be easily erected. With such a configuration, the construction period can be further reduced. . 6 and 7 show another embodiment of the method for constructing a joint according to the present invention. In this embodiment, the procedure for inserting the joint member 3 is changed. That is, the joint members 3 in which the upper and lower beam connecting main bars 9 are integrally connected by the connecting bars 10 are inserted from the facing direction of the column structural member 1 as shown by arrows C, respectively, and the insertion ends 9a of the beam connecting main bars 9 are inserted. Of the insertion end 9a is prevented from being biased to one surface. In this case, as an insertion procedure, for example, as shown in FIG. 7, two joint members 3 located at the center from the left side (left side in FIG. 7) of the column structural member 1 as shown by an arrow d.
And joint members 3 located at both ends as shown by arrow E from the right side, and these are inserted into the column structural member 1.
Set to. According to such a construction method, since the insertion end of the joint member 3 set in the column structural member 1 has little variation, the mounting of the beam structural member 2 to the joint member 3 is further facilitated, and the workability is improved. Can be improved. Next, an example of the shear reinforcing bar 8 applied to the present invention will be described with reference to FIGS. In addition, these can be applied as a shear reinforcement provided on the outer periphery of the column structural member 1, the beam structural member 2, and the joint member 3. First, in FIG. 8 (a), two auxiliary muscles 8c are arranged at the center of the shear reinforcement 8 in parallel with the vertical muscle 8b extending in the vertical direction. With such a configuration, the strength of the shear reinforcing bars 8 is improved by the auxiliary bars 8c, and the beam main bars 6 and the like can be assembled along the reinforcing bars 8c.
Setting of the arrangement position of the beam main reinforcement 6 or the like is simplified, and the assembling accuracy can be further improved. In FIG. 8 (b), a projecting portion 8d projecting inward is provided at the position of the auxiliary muscle 8c shown in FIG.
And the like function as an assembly position setting member.
With such a configuration, the arrangement of the reinforcing bars can be easily set, and the assembling accuracy can be improved. Next, in FIG. 8 (c), at the lower end of the shear reinforcing bar 8 shown in FIG. 8 (a), there is provided a projection 8a which extends below the longitudinal bar 8b and the auxiliary bar 8c. A laterally extending projection 8e is provided on the side of the vertical stripe 8b, and these projections are provided.
8a and 8e are used as spacers on the lower surface of the beam to maintain the concrete coating thickness. FIG. 8 (d) shows a configuration in which a projection 8d for setting the arrangement of reinforcing bars is provided at the position of the auxiliary muscle 8c instead of the auxiliary muscle 8c of the shear reinforcement 8 shown in FIG. 8 (c). It is. With such a configuration, the same operation and effect as described above can be obtained. On the other hand, in FIG. 8 (e), the projection 8a located at the center of the lower end of the auxiliary shearing muscle 8 shown in FIG. 8 (c) is omitted. The same operation and effect as those of the shear reinforcement 8 can be achieved. Also, in FIG. 8 (f), the projection 8a located at the center of the lower end of the shear reinforcing bar 8 shown in FIG. 8 (d) is omitted, and the same operation and effect can be obtained with such a configuration. be able to. In FIG. 8 (g), the projections 8a, 8 for setting the concrete coating thickness are provided at the four corners of the shear reinforcement 8 having the auxiliary reinforcement 8c.
In each of the configurations provided with e, such a configuration can improve the applicability of the column structural member 1 as a shear reinforcing bar. In each of the above embodiments, the column structural member 1, the beam structural member 2, the joint member 3 and the like are formed by hardening fibers with a resin material, but in the present invention, these materials are those of the embodiment. However, the present invention is not limited to this. For example, each component (the column main reinforcement 4, the shear reinforcement 5, etc.) may be configured by a reinforcing bar or the like. Similarly, a structural member for a beam and a joint member may be configured using a reinforcing bar. [Effects of the Invention] As described above, in the joint structure of a column and a beam according to the first invention, a column structural member assembled by a plurality of column main bars and a plurality of shear reinforcing bars, a plurality of beam main bars and a plurality of beam main bars. A beam structural member assembled by the shear reinforcing bars of the above, and a joint structure which is set at a predetermined position of the column structural member and freezes the beam structural member in an axial direction perpendicular to the longitudinal direction of the column structural member. The joint structure comprises a plurality of joint members respectively corresponding to the upper and lower beam main reinforcements of the beam structural member, and a width equivalent to the mutual interval of the beam main reinforcements in the width direction of the column structural member. The joint member is inserted into a mesh between the column main reinforcing bar and the shear reinforcing bar, and the upper and lower beams of the beam structural member are inserted at both ends thereof. A pair of upper and lower to which the main muscle is connected A beam connecting main bar, and a connecting bar provided only at one end of the pair of upper and lower beam connecting main bars to integrate the upper and lower beam connecting main bars. When inserted into the mesh with the shear reinforcing bars, both ends are set to protrude on both sides of the column structural member, and the interval between the upper and lower beam connecting main bars is equal to the interval between the beam main bars separated vertically. Since they are set to be substantially equal, the beam structural member can be easily and firmly joined to the pillar structural member with high construction accuracy, and the construction work on site can be easily performed. In addition, the reinforcement of the shear reinforcement in the connection portion of the column can be arranged, and the structure becomes more preferable in design. In the construction method according to the second invention, a column structural member including a column main reinforcement and a shear reinforcement is pre-assembled and erected at the construction position. A plurality of joint members each comprising a pair of beam connecting main bars and connecting bars provided only at one end side of the upper and lower pair of beam connecting main bars so as to be separated from the upper and lower beam main bars by a distance substantially equal to the distance between the upper and lower beam main bars. Forming and arranging these joint members in the width direction of the column structural member, inserting the beam connecting main bar into the mesh of the column main bar and the shear reinforcing bar, and projecting both ends to both sides of the column structural member. A step of setting a plurality of the joint members in the width direction of the column structural member, and a step of connecting a beam structural member including a beam main reinforcing bar and a shear reinforcing bar to both ends of the joint member. , Simple In the construction work, the setting position of the beam structural member can be positioned, the beam structure can be joined via the joint member, the workability and safety at the site can be improved, and the Shortening can be achieved. In particular, in both the first invention and the second invention,
Since the joint member has a flat shape in which the upper and lower beam connecting main bars are connected by connecting bars, and the interval between the beam connecting main bars is set to be substantially equal to the interval between the upper and lower beam main bars, the garden “joint” In addition to being able to handle and position the members very easily when setting the members to the column structural member, the beam connecting main bars can be inserted individually without connecting them with connecting bars, or Are significantly more advantageous in terms of transportation and workability as compared to a case where the joint members are arranged in the horizontal direction and connected in advance to form a three-dimensional joint member. The main bar, beam main bar, shear reinforcing bar, beam connecting main bar, connecting bar, etc.) have a structure in which continuous fibers are coated with resin, so that the structural members for columns and beams can be reduced in weight and This is preferable because the workability of the above can be further improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a pillar structural member and a joint member, and FIG. 2 shows a state where a joint member is set on the pillar structural member. FIG. 3 is a plan view, FIG. 3 is a side view showing a state where the beam structural member is attached to the joint member, FIG. 4 is a cross-sectional view of the fiber bundle, FIG. 5 is a cross-sectional view at the intersection of the fiber bundle, FIG. FIG. 7 is for explaining another embodiment of the construction method of the present invention.
FIG. 6 is a side view, FIG. 7 is a plan view, FIG.
(B), (c), (d), (e), (f), and (g)
1 is a front view showing an example of a shear reinforcement used in the present invention. DESCRIPTION OF SYMBOLS 1 ... Structural member for columns, 2 ... Structural member for beams, 3 ... Joint member, 4 ... Column main reinforcement, 5, 8 ... Shear reinforcement, 6 ... Beam main reinforcement, 7a ... Connection line, 2a ... Beam unit, 8a, 8d, 8e ... Projection, 8c ... Auxiliary bar, 9 ... Main beam connecting bar, 10 ... Connecting bar, 20 ... Resin material, 21 ... Continuous fiber, T ... Fiber Bundle, A: Connection structure.

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Tadashi Fujisaki               Shimizu, 2-6-1 Kyobashi, Chuo-ku, Tokyo               Construction Co., Ltd. (72) Inventor Seiho Kitagawa               Shimizu, 2-6-1 Kyobashi, Chuo-ku, Tokyo               Construction Co., Ltd.                (56) References JP-B-62-1061 (JP, B2)

Claims (1)

(57) [Claims] Multiple column reinforcements (4) and multiple shear reinforcements (5)
The column structural member (1) assembled by the above, the beam structural member (2) assembled by the plurality of beam main reinforcing bars (6) and the plurality of shear reinforcing bars (8), and the column structural member (1) A connection structure (A) that is set at a predetermined position and connects the beam structural member (2) in an axial direction perpendicular to the length direction of the column structural member (1); (A), a plurality of joint members (3) respectively corresponding to the upper and lower beam main reinforcing bars (6) of the beam structural member (2) are arranged in the width direction of the column structural member (1). ), The column structural member (3) is made to penetrate in a state of being juxtaposed at intervals equal to the mutual interval of 5) and the main beam bars (6) above and below the beam structural member (2) are connected to both ends of the mesh. Upper and lower pair of beams connecting the main reinforcement to (9) and upper and lower beam connection main reinforcement only provided on one end side of the pair of upper and lower beam connection main reinforcement (9) (9)
And a connecting bar (10) for integrating the beam connecting main bars (9), and a length dimension of the beam connecting main bars (9) is inserted into a mesh between the column main bars (4) and the shear reinforcing bars (5). Sometimes, both ends are set to protrude to both sides of the column structural member (1), and the interval between the upper and lower beam connecting main bars (9) is substantially equal to the interval between the vertically extending beam main bars (6). A joint structure between a column and a beam in a concrete structure, which is set. 2. The column main reinforcement (4), the beam main reinforcement (6), the shear reinforcement (5,
8. The concrete structure according to claim 1, wherein each of the beam connecting main reinforcing bars (9) and the connecting reinforcing bars (10) is formed by solidifying continuous fibers with a resin material. Column and beam joint structure. 3. A step of previously assembling a column structural member (1) comprising a column main reinforcement (4) and a shear reinforcement (5) and erecting the column at its construction position; and connecting to the upper and lower beam main reinforcements (6), respectively. A pair of upper and lower beam connecting main bars (9) are provided only at one end of the upper and lower pair of beam connecting main bars (9), and these beam connecting main bars (9) are spaced apart substantially equally to the interval between the upper and lower beam main bars (6). A step of forming a plurality of joint members (3) comprising connecting bars (10) to be integrated; and shearing reinforcement of each beam connecting main bar (9) with the column main bar (4) by setting the joint members (3) in a vertical position. Each joint member (3) is inserted into a mesh with the bar (5) so that both ends thereof are projected to both sides of the column structural member (1), and the distance between the joint members (3) is equal to the distance between the beam main bars (6). Setting a plurality of columns in the width direction of the column structural member (1). Connecting a beam structural member (2) consisting of a beam main reinforcing bar (6) and a shear reinforcing bar (8) to both ends of the joint member (3). Beam joint construction method.