JP2009293192A - Method for constructing concrete structure constituted by joining prestressed concrete member and concrete member together, and method for constructing structure composed of connection section and beam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct a connection section inside which an end of a main beam reinforcement of a beam to be connected is anchored, without cast-in-place concrete constituting the connection section. <P>SOLUTION: A prestressed concrete connection member 10 constituting the connection section is provided with a reinforcement storage hole 11 which is opened in the end surface of the member, and an anchoring metal 30 which is embedded in the end of the reinforcement storage hole 11; and a prestressed concrete beam member, in which a reinforcement insertion hole of a mechanical joint connected to the main beam reinforcement is opened, is erected on the end surface of the member. A reinforcement 40 having a screw thread formed on an outer peripheral surface is screwed into the through-hole 31 of the anchoring metal 30, and arranged in such a manner that a leading end reaches the inside of the mechanical joint of the prestressed concrete beam member; a nut 50 is tightened from the end side of the reinforcement 40; and grout 60 is infilled until it overflows from between the nut 50 and the reinforcement 40. Then, the grout is infilled into the mechanical joint of the prestressed concrete beam member and the reinforcement storage hole 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for constructing a joint portion of a column beam frame in which a tip of a beam main bar is fixed in a joint portion using a precast concrete member.

  Conventionally, for example, in joints where a beam is connected from one side in a reinforced concrete column beam structure, fixing hardware is attached to the end of the beam reinforcement so that it can resist the tensile force acting on the beam reinforcement. In addition, by embedding this fixing metal in the concrete constituting the joint part, the main beam of the beam was fixed to the joint part.

Thus, when attaching the fixing metal to the reinforcing bar, it is necessary to firmly fix the fixing metal to the reinforcing bar so that the tensile force acting on the reinforcing bar is reliably transmitted to the fixing metal. Therefore, for example, Non-Patent Document 1 describes a method of fixing a fixing metal to a reinforcing bar by screwing the fixing metal to the reinforcing bar and then filling a grout in a gap between the reinforcing bar and the fixing metal. . In this method, in order to confirm that the grout is filled in the gap, it is necessary to fill the grout until it overflows from both ends of the fixing metal.
One company of the present applicant has proposed a method shown in FIG. 7 of Patent Document 1 as a method for fixing a reinforcing bar to concrete using a fixing metal.
Tokyo Steel Co., Ltd. “Plate Nut Method Design Guidelines Japan Building Center General Rating BCJ Rating -RC0152-01”, Tokyo Steel Co., Ltd. JP 2006-22494 A

  However, in the above method, it is necessary to visually confirm that the grout overflows from both ends of the fixing metal. However, if the fixing metal is embedded in the concrete member, the grout overflows from the inner side of the concrete member. Can not be confirmed. For this reason, even when the joint portion is formed of a PC member, it is necessary to place concrete around the fixing hardware in place.

  The present invention has been made in view of the above problems, and its purpose is to construct a joint portion in which the end of the beam main bar is fixed internally without hitting the concrete constituting the joint portion on-site. That is.

  The method for constructing a concrete structure in which a PC member and a concrete member according to the present invention are joined has a through hole having a thread formed on the inner peripheral surface, and is embedded so that one end side is exposed on one surface of the member. A fixed metal member, a PC member provided with a reinforcing bar housing hole formed so as to reach the other end side of the fixed metal member from the opposite surface of the one surface of the member, and a concrete member in which the reinforcing bar is embedded. A method for constructing a bonded concrete structure, wherein a reinforcing bar screwing step of screwing one end of a reinforcing bar having a thread formed on an outer peripheral surface thereof to the fixing metal member, and the through hole of the fixing metal member is led. A filler filling step for filling the gap between the fixing metal and the reinforcing bar through the injection hole, and a concrete member construction step for constructing or installing a concrete member connected to the opposite surface of the PC member. In the rebar screwing step, the fixing hardware is configured such that the filler filled in the gap is less likely to overflow from the one end side than the other end side, and the filling In the material filling step, the filler is filled until it overflows from the one end side of the through hole, and in the concrete member construction step, at least a part of the other end of the reinforcing bar and the reinforcing bar embedded in the concrete member And a joint.

  A construction method for a structure including a joint portion and a beam according to the present invention has a through hole in which a thread is formed on an inner peripheral surface, and a fixing hardware embedded so that one end side is exposed on one surface of the member. A structure comprising a joint portion and a beam using a PC joint member provided with a reinforcing bar housing hole formed so as to reach the other end side of the fixing hardware from the opposite surface of the one surface of the member. A method of constructing, comprising: a reinforcing bar screwing step in which one end of a reinforcing bar having a thread formed on an outer peripheral surface thereof is screwed to the fixing metal; and the fixing metal and the fixing metal through an injection hole communicating with the through hole of the fixing metal. A filler filling step of filling a filler with a filler, and a beam construction step of constructing or installing a beam connected to the opposite surface of the joint portion, and in the rebar screwing step, Fixing hardware is filled with the filler filled in the gap before the other end side. In the filler filling step, the filler is filled until it overflows from the one end side, and in the beam construction step, the other end of the reinforcing bar is formed. And at least a part of the beam main reinforcing bars constituting the beam.

In the above method, the PC joint member is integrally formed with a PC beam member constituting at least a part of a beam connected to at least any one of both side surfaces adjacent to the one surface of the joint portion. It may be constructed.
Further, the PC joint member may be constructed integrally with a PC column member that constitutes at least a part of at least one of the columns above and below the joint portion.

  In addition, the joint portion has a through-hole penetrating the one surface and the opposite surface, and in the beam construction step, a beam connected to the one surface so that a main beam of the beam penetrates the through-hole. And the other end of the reinforcing bar and a part of the beam main reinforcing bars constituting the beam joined to the opposite surface, and the beam main reinforcing bar of the beam connected to the one surface passing through the through hole And the remainder of the beam main reinforcing bars constituting the beam to be joined to the opposite surface.

  Further, the method of constructing the structure comprising the joint portion and the beam according to the present invention is a PC in which the joint portion and the beam end portion from the beam end to the middle of the beam connected to the joint portion are integrally configured. A beam / joint member having a through-hole formed with a thread on the inner peripheral surface, and having one end exposed on the surface of the joint portion opposite to the side to which the beam is joined A PC beam / joint member comprising: an embedded fixing hardware; and a reinforcing bar accommodation hole formed so as to reach the other end side of the fixing hardware from the intermediate end surface of the portion constituting the beam. A method of constructing a structure including a joint portion and a beam using a reinforcing bar screwing step of screwing one end of a reinforcing bar having a thread formed on an outer peripheral surface of the fixing metal piece; A filler filling step of filling a filler into a gap between the fixing metal and the reinforcing bar from an injection hole communicating with the through hole; A beam construction step for constructing or installing a part of the beam connected to the beam end of the PC beam / joint member, and in the rebar screwing step, the fixing hardware is filled in the gap. The filler is configured to be more difficult to overflow from the one end side than the other end side, and in the filler filling step, the filler is filled until it overflows from the one end side of the through hole, In the beam construction step, the other end of the reinforcing bar is joined to at least a part of the beam main reinforcing bars constituting the beam.

Further, in the above method, the fixing metal is formed such that the injection hole is formed on the other end side with respect to the intermediate portion of the fixing metal, so that the filler filled in the gap is formed on the other end side. Also, it may be configured so as not to overflow from the one end side.
Further, the fixing metal is screwed to the one end side with the reinforcing bar, and a nut is attached so as to come into contact with the fixing metal, so that the filling material filled in the gap is closer to the one end than the other end side. You may be comprised so that it may become difficult to overflow from the side.

In addition, the fixing metal is configured such that a nut is screwed into the reinforcing bar and the nut is tightened to the one end side, so that the filler filled in the gap is less likely to overflow from the one end side than the other end side. May be configured as
In the beam construction step, a PC beam member constituting at least a part of the beam may be built, or concrete constituting at least a part of the beam may be placed to construct the beam. Good.

  According to the present invention, since the filler filled in the fixing metal is configured to be less likely to overflow from one end side than the other end side, when the filler overflows from the other end side of the fixing metal. In other words, the filler overflows from the other end side. Thus, by filling the filler until it overflows from one end side, the filler metal is sufficiently filled, and the fixing member can be firmly fixed to the reinforcing bar. For this reason, it becomes possible to embed the fixing member in the PC member constituting the joint portion, and it is possible to construct the joint portion in which the end portion of the beam main bar is fixed inside without placing the concrete in the field. .

Hereinafter, each embodiment of the construction method of the joint part in the column beam frame of the present invention will be described in detail with reference to the drawings. In the following description, for convenience of explanation, the column and beam shear reinforcement bars are not shown, but the column and beam are appropriately provided with shear reinforcement bars.
FIG. 1 is a perspective view showing a column beam frame 1 constructed by a method according to first to third embodiments of the present invention described below. The construction method of the joint part of the first to third embodiments described below includes, for example, a beam 3 on both side surfaces and the surface of the building center side of the outer periphery of the column beam frame 1 of the building as shown in FIG. One of the opposing side surfaces, such as a joint portion 2A to which beams 4 are connected and a joint portion 2B to which beams 3 and 4 are connected to adjacent surfaces such as corner portions of the column beam frame 1 This is a method of constructing a joint where a beam is connected only to a surface.

  Thus, in the joint portions 2A and 2B in which the beam 4 is connected to only one of the opposing side surfaces, it is necessary to fix the end of the beam main bar of the beam 4 to the joint portions 2A and 2B. Therefore, it is necessary to fix the fixing metal to the end of the reinforcing bar and embed the fixing metal in the concrete member constituting the joints 2A and 2B. As described in the column of the prior art, when such a joint portion 2A, 2B is formed of a PC member, if the fixing metal is embedded in the PC member, the fixing metal is securely fixed to the reinforcing bar. There was a problem that I could not.

  In view of this, the inventors have proposed a method of fixing a fixing hardware embedded in a PC member, which will be described below, to a reinforcing bar. The method for constructing the joint portion of the first to fourth embodiments uses a method of fixing the fixing hardware to the reinforcing bar. Therefore, first, the method proposed by the inventors for fixing a fixing metal object embedded in a PC member to a reinforcing bar, and using a PC beam member and a PC connection member as a joint portion to which a beam is connected to one side. A case of construction will be described as an example.

  2A is a horizontal cross-sectional view showing a state where the PC beam member 20 is connected to one side surface of the PC joint member 10, and FIG. 2B is an enlarged view of a portion B in FIG. As shown in FIG. 1A, a reinforcing bar accommodating hole 11 is formed in the PC joint member 10, and a fixing metal fitting 30 is embedded in the end of the reinforcing bar accommodating hole 11. A concave portion 12 is formed on the surface of the PC fitting 10 opposite to the one side surface so that the end surface of the fixing metal 30 is exposed.

  As shown in FIG. 2B, the fixing hardware 30 is a steel member having a through hole 30A in which a thread 31 is formed on the inner peripheral surface and having a flange portion 32 formed at the end. . The fixing metal 30 is formed with an injection hole 33 that reaches the through hole 30A from the outer peripheral surface.

  The beam main bar 21 is embedded inside the PC beam member 20, and a mechanical joint 22 is connected to the end of the beam main bar 21. The reinforcing bar insertion hole 23 of the mechanical joint 22 is opened on the end face of the PC beam member 20 on the PC joint member 10 side. In addition, you may provide a cotter etc. in the joining end surface of the PC joint member 10 and the PC beam member 20.

Hereinafter, a method for fixing the reinforcing bars to the fixing member 30 will be described in detail with reference to FIGS. 3A to 3D.
First, the PC joint member 10 and the PC beam member 20 are built so that their joint end faces come into contact with each other.
Next, as shown in FIG. 3A, the screw 41 of the reinforcing bar 40 and the screw 31 in the through hole 30A of the fixing hardware 30 are screwed together, and the reinforcing bar 40 is rotated. The reinforcing bar 40 is inserted into the reinforcing bar accommodation hole 11 until the end of the reinforcing bar 40 is located in the recess 12 of the PC fitting 10 and the end protrudes from the end surface of the fixing hardware 30 on the flange 32 side. To do. The reinforcing bar 40 is a deformed reinforcing bar in which a thread 41 is formed on the outer peripheral surface, and a flat defect portion is formed on a part of the outer peripheral surface.

  Next, as shown in FIG. 3B, in the recess 12, the nut 50 is screwed with the thread 41 of the reinforcing bar 40 to contact the end surface of the fixing hardware 30 on the flange portion 32 side. tighten. As a result, as shown in FIG. 4B, the surface of the PC joint member 10 at the top of the thread 51 of the nut 50 (left side in the figure; hereinafter referred to as the member surface side) and the thread 41 of the reinforcing bar 40. The center side (right side in the figure; hereinafter referred to as the inside of the member) of the mountain PC joint member 10 abuts, and a gap 54 is formed in the nut 50 on the member surface side of the thread 41 of the reinforcing bar 40 in the nut 50. The Rukoto. Further, the inner surface of the thread 31 of the thread 31 formed on the inner periphery of the through hole 30A of the fixing metal 30 and the surface of the thread 41 of the thread 41 on the surface of the reinforcing bar 40 come into contact with each other. In the fixing hardware 30, a gap 34 is formed inside the crest member of the thread 41 of the reinforcing bar 40.

  Next, as shown in FIG. 3C, the grout 60 is injected into the fixing metal 30 from the injection hole 33 through the hole 13 provided in the PC joint member 10. Here, since the nut 50 is attached so as to be in contact with the surface of the fixing metal 30 on the flange 32 side, the injection hole 33 of the fixing metal 30 is longer than the length from the injection hole 33 to the end surface inside the member of the fixing metal 30. To the end surface on the member surface side of the nut 50 is larger.

  Further, as described above, the gap 34 is formed inside the thread 41 of the thread 41 on the surface of the reinforcing bar 40 inside the fixing metal 30, and the thread member 41 surface side of the thread 41 on the surface of the reinforcing bar 40 is formed inside the nut 50. A gap 54 is formed in the gap. That is, the positions where the gaps 34 and 54 are formed with respect to the crests of the thread 41 of the reinforcing bar 40 are reversed between the inside of the fixing metal 30 and the inside of the nut 50. Are cut off from each other at the boundary. Therefore, the grout 60 injected from the injection hole 33 is smoothly filled into the through hole 30A through the gap 34 in the fixing metal 30, but cannot flow into the nut 50 from the gap 34 to the gap 54. If it does not pass through a narrow gap such as a defective portion of the thread 41 of the reinforcing bar 40, it cannot flow into the gap 54 in the nut 50. For this reason, the grout 60 reaches the member inner end of the fixing hardware 30 before the surface of the nut 50.

For these reasons, the grout 60 filled in the injection hole 33 of the fixing metal 30 first overflows from the inner end of the fixing metal 30 as shown in FIG. 3C, and then, as shown in FIG. 3D. , It overflows from the surface of the nut 50. For this reason, if the grout 60 overflows from the surface of the nut 50, it can be said that the grout 60 is completely filled in the fixing metal 30.
In addition, after filling the fixing metal 30 with the grout 60 as described above, the grout may be filled in the recess 12 formed on the surface of the PC joint member 10 as necessary.

Next, grout is filled in the through hole of the PC joint member 10 and the mechanical joint 22 of the PC beam member 20. Then, the joint between the PC joint member 10 and the PC beam member 20 is filled with grout.
Through the above steps, the PC beam member 20 and the PC joint member 10 are joined, and the joint portion is constructed.

  In the above description, the nut 50 is tightened in a state where the nut 50 is in contact with the surface side of the PC fitting member 10 of the fixing hardware 30. However, the nut 50 is not necessarily tightened. As described above, if the nut 50 is provided so as to be in contact with the surface side of the PC fitting member 10 of the fixing metal 30, the length from the injection hole 33 of the fixing metal 30 to the inner end of the member is compared. Since the length from the injection hole 33 to the end of the nut 50 on the member surface side becomes longer, the grout 60 filled from the injection hole 33 is less likely to overflow to the member surface side compared to the inside of the member. By visually confirming that the grout 60 overflows from the member surface side, it can be confirmed that the grout 60 is sufficiently filled in the fixing metal 30.

  Further, in the above description, the case where the fixing hardware 30 having the injection hole 33 formed in the approximate center in the axial direction is used is described. However, the present invention is not limited to this. For example, as shown in FIG. A fixing metal 70 provided so as to be biased to any one of the axial holes of the hole 70A may be used. In this case, as shown in the figure, the fixing hardware 70 is embedded so that the side on which the injection hole 73 is formed is located on the inner side of the PC fitting member 10, as in this embodiment. Even if the nut 50 is not attached, the length from the injection hole 73 to the surface side of the PC fitting member 10 of the fixing metal piece 70 is longer than the length from the injection hole 73 to the center side of the PC fitting member 10 of the fixing metal piece 70. Since the length becomes longer, if the grout 60 overflows from the end of the reinforcing bar 40 of the fixing metal 70 as in the above embodiment, it is confirmed that the grout 60 is filled in the fixing metal 70. it can. Further, instead of the fixing metal 30 of the above-described embodiment, it is possible to use a fixing metal 70 in which the injection hole 73 is formed so as to be biased to one side.

  In the above description, the fixing hardware 30 is embedded so that the collar portion 32 is positioned on the surface side of the PC member 10. However, as shown in FIG. You may embed in PC member 10 so that it may be located in the side. In this case, as shown in the figure, it is preferable to use a fixing metal 80 in which the injection hole 83 is provided so as to be biased toward the flange 82 side. As a result, the length from the injection hole 83 to the surface side of the PC fitting member 10 of the fixing metal piece 80 is longer than the length from the injection hole 83 to the center side of the PC fitting member 10 of the fixing metal piece 80. The grout filled inside is less likely to overflow to the end side of the reinforcing bar 40 as compared to the member surface side of the fixing hardware 80. In addition, in the embodiment shown in FIG. 4B, the grout is less likely to overflow from the end side of the reinforcing bar 40 by using the fixing hardware 80 in which the injection hole 83 is provided so as to be biased to the flange portion 82. Not limited to this, the grout may not easily overflow from the end side of the reinforcing bar 40 by abutting or tightening a nut on the surface side of the PC member of the fixing metal as in the above embodiment.

  Further, in the above description, as shown in FIG. 2A, the PC beam member 20 including the mechanical joint 22 embedded so that the reinforcing bar insertion hole 23 is opened on the surface of the member, and the PC finish constituting only the joint portion. Although the case where the mouth member is joined has been described, the present invention is not limited to this. For example, as shown in FIG. 5A, a PC beam member 25 in which a mechanical joint 26 is embedded in the member and a through hole is formed so as to reach the reinforcing bar insertion hole 27 of the mechanical joint 26 from the joint end surface. When the PC joint member 10 is joined, as shown in FIG. 5B, the PC beam / joint member 95 constituting the joint portion and the end of the beam, and the PC beam member constituting the center portion of the beam. The present invention can also be applied to the case of joining 90. In the embodiment shown in FIG. 5B, the case where the reinforcing bar insertion hole 93 of the mechanical joint 92 of the PC beam member 90 opens at the end face of the member is shown. However, as in FIG. It is good also as a structure embed | buried in.

<First Embodiment>
Hereinafter, a first embodiment of a method for constructing a column beam joint according to the present invention will be described. In the following description, a case where the column beam frame shown in FIG. 1 is constructed will be described as an example.
6A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 6B is a cross-sectional view taken along line BB in FIG. In this embodiment, the column beam frame 1 is constructed by joining the lower PC column member 120, the PC beam / joint member 110, the first PC beam member 130, and the upper PC column member 140. To do.

The lower PC column member 120 includes a column main reinforcement 121 embedded in the member so as to extend in the vertical direction. The upper end of the columnar reinforcement 121 protrudes from the upper surface of the member.
The upper PC column member 140 includes a column main bar 141 embedded in the member so as to extend in the vertical direction, and a mechanical joint 142 connected to the lower end of the column main bar 141 and having a reinforcing bar insertion hole opened on the lower surface of the member. .
The PC beam / joint member 110 includes a PC joint member 110A constituting the joint portions 2A and 2B and a joint portion side end portion of the beam 3 connected to the joint portions 2A and 2B to an intermediate portion. The second PC beam member 110B to be configured is a member constructed integrally.

  In the PC beam / joint member 110 constituting the joint portion 2A in which the beam is connected to both sides of the column beam frame 1, the second PC beam member 110B is connected to both sides of the PC joint member 110A. And a plurality of beam main bars 111 embedded in the interior so as to extend in the horizontal direction. The plurality of beam main bars 111 protrude from the end surface of the second PC beam member 110B.

  Further, in the PC beam / joint member 110 constituting the corner portion of the column beam frame 100, the second PC beam member 110B is connected to one side surface of the PC joint member 110A. A plurality of beam main bars 111 are embedded so as to extend in the horizontal direction across the second PC beam member 110B. One end of the plurality of beam main bars 111 protrudes from the end face of the second PC beam member 110B, and the opposite end is fixed in the PC joint member 110A.

Further, the PC joint member 110A is formed with a through hole 112 so as to extend in a vertical direction at a position corresponding to the column main reinforcement, and a reinforcing bar is provided at an end portion on the side where the first PC beam member 130 is joined. A receiving hole 113 is formed. A fixing metal is embedded in the end of the reinforcing bar accommodation hole 113, and the end surface of the fixing metal is exposed in a recess formed on the surface of the PC joint member 110A.
The first PC beam member 130 includes a beam main bar 131 embedded so as to extend in the horizontal direction, and a mechanical joint 132 connected to an end of the beam main bar 131.

Hereinafter, a method for constructing a column beam frame will be described.
7A to 7E are views for explaining a method of constructing the column beam frame 1.
First, as shown in FIG. 7A, the first PC beam member 130 is built from the upper side to the side corresponding to the joint portions 2A and 2B on the upper side of the lower PC column member 120.
Next, as shown in FIG. 7B, the PC beam / joint member 110 has a through hole 112 extending in the vertical direction in which a column main bar 121 protruding from the upper surface of the lower PC pillar member 120 is formed in the PC joint member 110A. It is built from above so that it can be inserted inside. Then, the grout is filled in the through hole 112 and the joint between the PC beam / joint member 110 and the lower PC column member 120.

  Next, as shown in FIG. 7C, a reinforcing bar 133 having a thread on the outer peripheral surface is inserted into the reinforcing bar accommodation hole 113 of the PC connection member 110A, and this reinforcing bar is processed by the method described with reference to FIGS. 4A to 4F. The end portion 133 is fixed to the PC joint member 110A by a fixing member. Then, the mechanical joint 132 embedded in the first PC beam member 130, the reinforcing bar accommodation hole 113 formed in the PC joint member 110A, and between the PC joint member 110A and the first PC beam member 130 are provided. Fill the joint with grout. As a result, the PC beam / joint member 110 and the first PC beam member 130 are joined.

  Next, as shown in FIG. 7D, between the second PC beam members 110B constituting the adjacent PC beams / joint members 110, the beam main bars 111 are connected by a method such as a lap joint, and the outer periphery of the beam The second PC beam members 110B of the PC beam / joint member 110 are connected to each other by installing a mold in the mold and filling the mold with concrete.

Next, as shown in FIG. 7E, the column main reinforcement 121 of the lower PC column member 120 protruding from the upper portion of the through hole 112 of the PC joint member 110A reaches the mechanical joint 142 embedded in the lower portion. The upper PC pillar member 140 is installed. Then, grout is filled in the mechanical joint 142 of the upper PC column member 140 and between the upper PC column member 140 and the PC beam / joint member 110.
The joints 2A and 2B are constructed by the above process. And a column beam frame can be built by repeating said process.

  According to the present embodiment, the grout filled in the fixing member is less likely to overflow to the surface side of the PC beam / joint member 110, so that the grout filled in the fixing metal is a reinforcing bar of the fixing metal. When the grout is filled until it overflows from the end side, the grout is sufficiently filled in the through hole of the fixing metal. For this reason, even when the fixing hardware is embedded in the PC member constituting the joint part as described above, the fixing member can be firmly fixed to the reinforcing bar, and the concrete constituting the joint part is cast in the field. It is possible to build a joint part without any problems.

  In addition, although this embodiment demonstrated the case where a beam was comprised using a full PC member, it is not restricted to this, You may construct | assemble using a half PC member. Furthermore, it is possible to construct the concrete that constitutes the beam by hitting it in the field.

  FIG. 8 is a vertical cross-sectional view showing a column beam frame constructed by hitting concrete constituting the beam in the field. As shown in the figure, when the concrete constituting the beam is cast on-site, the PC joint member constituting only the joint portions 2A and 2B instead of the PC beam / joint member in the above embodiment. 610 is used. A plurality of beam main bars 611 are embedded in the PC joint member 610 in the horizontal direction, and both ends of the beam main bars 611 (one end in the corner joint member) protrude from the member surface.

Hereinafter, a method for constructing the joint portion when the concrete constituting the beam is cast on-site will be described with reference to FIGS. 9A to 9D.
First, the lower PC column member 620 from which the column main reinforcement 621 protrudes from the upper surface of the member is built.
Next, as shown in FIG. 9A, the PC joint member 610 is built so that the column main reinforcement 621 protruding from the upper surface of the lower PC column member 620 is inserted into the through hole 612. Then, the grout is filled in the joint between the PC joint member 610 and the lower PC column member 620 and the through hole in the PC joint member 610.

  Next, as shown in FIG. 9B, a reinforcing bar 633 having a thread on its outer peripheral surface is inserted into the reinforcing bar accommodation hole 613 of the PC connection member 610, and this reinforcing bar is processed by the method described with reference to FIGS. 4A to 4F. The end portion of 633 is fixed to the PC joint member 610 by a fixing member. Then, grout is filled into the reinforcing bar accommodation hole 613 of the PC connection member 610.

  Next, as shown in FIG. 9C, the beam main bars 651 and 634 are joined to the beam main bars 611 and the reinforcing bars 633 of the adjacent PC connection member 610, and the beam main bars 651 and 634 constituting the beams 3 and 4 are arranged. . Then, the frames 3 and 4 are constructed by installing a formwork on the outer periphery and filling the formwork with concrete.

  Next, as shown in FIG. 9D, the column main reinforcement 621 of the lower PC column member 620 protruding from the upper part of the through hole 612 of the PC joint member 610 reaches the mechanical joint 642 embedded in the lower part. The upper PC pillar member 640 is installed. Then, grout is filled in the mechanical joint 642 of the upper PC column member 640 and the joint between the PC column member 640 and the PC connection member 610.

  The joints 2A and 2B can be constructed by the above steps. And a column beam frame can be built by repeating said process. In this way, even when the beam is constructed from on-site concrete, the concrete constituting the joint can be constructed without on-site construction.

  In the present embodiment, the PC beam member 130 constituting the beam 4 is connected to the PC beam / joint member 110 constituting the joint portions 2A and 2B. However, the present invention is not limited to this, and the beam 4 is constituted. The part from the end of the concrete to the middle may be formed integrally with the PC beam / joint 110 member. In this case, the PC beam member and the PC beam / joining member 110 may be connected as described with reference to FIG. 5B. Similarly, when the beam 4 is constructed of cast-in-place concrete, the part from the end to the middle of the concrete constituting the beam 4 is constructed integrally with the PC joint member 610, and the fixing member is fixed. After connecting the beam main bar and the beam main bar, the beam and the joint portion may be constructed integrally by placing concrete constituting the remaining portion of the beam.

Second Embodiment
Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. Also in this embodiment, the case where the column beam frame 1 shown in FIG. 1 is constructed will be described as an example.
10A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 10B is a cross-sectional view taken along line BB in FIG. As shown in the figure, the column beam frame 1 joins a lower PC column member 220, a PC beam / joint member 210, a second PC beam member 230, and an upper PC column member 240. It is constructed by.

The lower PC column member 220 includes a column main bar 221 embedded in the member so as to extend in the vertical direction, and a mechanical joint 222 connected to the upper end of the column main bar 221 and having a reinforcing bar insertion hole opened on the upper surface of the member. Prepare.
Further, the upper PC column member 240 includes a column main reinforcement 241 whose lower end is embedded so as to extend in the vertical direction and protrudes from the lower surface of the member.

  Further, the PC beam / joint member 210 constitutes the PC joint member 210A constituting the joint portions 2A and 2B and the end portion to the middle portion of the beam 3 connected to the joint portions 2A and 2B. The PC beam member 210B is an integrated member. In the PC beam / joint member 210 constituting the joint portion 2A in which the beam is connected to both sides of the column beam frame 1, the second PC beam member 210B is connected to both sides of the PC joint member 210A. And a plurality of beam main bars 211 embedded therein so as to extend in the horizontal direction. The plurality of beam main bars 211 protrude from the end face of the second PC beam member 210B.

  In the PC beam / joint member 210 constituting the corner joint portion 2B of the column beam frame 1, the second PC beam member 210B is connected to one side surface of the PC joint member 210A. A plurality of beam main bars 211 are embedded so as to extend in the horizontal direction across the joint member 210A and the second PC beam member 210B. One end of the plurality of beam main bars 211 protrudes from the end surface of the second PC beam member 210B, and the opposite end is fixed in the PC joint member 210A.

Further, the PC joint member 210A is formed with a through hole 212 so as to extend in the vertical direction at a position corresponding to the column main reinforcement, and a reinforcing bar is provided at an end portion on the side where the first PC beam member 230 is joined. An accommodation hole 213 is formed. A fixing metal is embedded in the end of the reinforcing bar housing hole 213, and the end surface of the fixing metal is exposed in a recess formed on the surface of the PC fitting member 210A.
The first PC beam member 230 includes a beam main bar 231 embedded so as to extend in the horizontal direction, and a mechanical joint 232 connected to an end of the beam main bar 231.

Hereinafter, a method for constructing a column beam joint using the PC member will be described. 11A to 11E are diagrams for explaining a method of constructing a column beam frame.
First, as shown in FIG. 11A, the first PC beam member 230 is built on the side of the upper column beam joint of the lower PC column member 220. In the present embodiment, since the column main bars do not protrude above the lower PC column member 220, the first PC beam member 230 can be horizontally moved and built.

  Next, as shown in FIG. 11B, the PC beam / joint member 210 including the PC joint member constituting the corner joint 2B is placed on the upper part of the lower PC pillar member 220 constituting the corner pillar. Move horizontally and build.

  Next, as shown in FIG. 11C, the main beam beam 211 protruding from the end of the PC beam member 210B of the PC beam / joint member 210 constituting the corner joint portion 2B constitutes the joint portion 2A. The PC beam / joint member 210 is moved in the horizontal direction so as to be inserted into the mechanical joint 214 embedded in the PC beam member 210B, and is built above the lower PC column member 220. Then, grout is filled in the joint between the mechanical joint 214 embedded in the PC beam member 210B and the PC beam member 210B. As a result, adjacent PC beam members 210B are joined together.

  Next, as shown in FIG. 11D, the reinforcing bar 233 having a thread formed on the outer peripheral surface is inserted into the reinforcing bar accommodating hole 213 of the PC fitting member 210A, and the method described with reference to FIGS. 4A to 4F is performed. The ends of the reinforcing bars 233 are fixed to the PC joint member 210A by a fixing member. Then, grout is filled in the mechanical joint 232 embedded in the first PC beam member 230, the reinforcing bar accommodation hole 213 formed in the PC joint member 210A, and between the PC members. As a result, the PC beam / joint member 210 and the first PC beam member 230 are firmly connected.

  Next, as shown in FIG. 11E, the upper PC column member 240 passes through the through hole 212 formed so that the column main bar 241 protruding from the lower surface extends in the vertical direction in the PC joint member 210A, and the tip thereof is It is built to reach the mechanical joint 222 embedded in the upper part of the lower PC pillar member 220.

Next, grout is filled in the through hole 212 of the PC joint member 210A, the mechanical joint 222 of the lower PC column member 220, and the joint between the PC joint member 210A and the upper PC column member 240. The grout is also filled in the joints between the PC joint member 210A and the upper PC pillar member 240 and between the PC joint member 210A and the lower PC pillar member 220.
A column beam frame can be constructed by repeating the above steps. And a column beam frame can be built by repeating said process.

  In addition, although this embodiment demonstrated the case where a beam was comprised using a full PC member, it is not restricted to this, You may construct | assemble using a half PC member. Furthermore, it is possible to construct the concrete that constitutes the beam by hitting it in the field.

  12 is a vertical cross-sectional view showing a column beam frame constructed by hitting concrete constituting the beam in-situ, (A) is a cross-sectional view taken along line AA in FIG. 1, and (B) is a cross-sectional view taken along line BB in FIG. It is sectional drawing. As shown in the figure, when the concrete constituting the beam is cast on-site, it is replaced with the PC beam / joint member in the above embodiment, and the PC joint member constituting only the joint portions 2A and 2B. 710 is used. A plurality of beam main bars 711 are embedded in the PC joint member 710 in the horizontal direction, and both ends of the beam main bars 711 (one end in the corner joint member) protrude from the member surface.

Hereinafter, a method for constructing the column beam joint in such a case will be described with reference to FIGS. 13A to 13.
First, the lower PC column member 720 in which the reinforcing bar insertion hole of the mechanical joint 722 opens is built on the upper surface of the member.
Next, as shown in FIG. 13A, the PC joint member 710 is built in a position corresponding to the joint portions 2A and 2B above the lower PC column member 720. As a result, the through hole 712 of the PC joint member 710 and the mechanical joint 722 of the lower PC column member 720 are arranged on a straight line.

  Next, as shown in FIG. 13B, a reinforcing bar 733 having a thread on the outer peripheral surface is inserted into the reinforcing bar accommodation hole 713 of the PC connection member 710, and this reinforcing bar is processed by the method described with reference to FIGS. 4A to 4F. The end of 733 is fixed to the PC joint member 710 by a fixing member. Then, grout is filled into the reinforcing bar accommodation hole of the PC joint member 710.

  Next, as shown in FIG. 13C, the beam main bars 751 and 734 are joined to the beam main bar 711 and the reinforcing bar 733, and the beam main bars 751 and 734 constituting the beams 3 and 4 are arranged. Then, the frames 3 and 4 are constructed by installing a formwork on the outer periphery and filling the formwork with concrete.

Next, as shown in FIG. 13D, the column main reinforcement 741 protrudes from the lower surface through the upper PC column member 740, the column main reinforcement 741 passes through the through hole 712 of the PC joint member 710, and the tip thereof is the lower PC column member. The upper PC column member 740 is built so as to reach the mechanical joint 742 opening on the upper surface of the 740. Then, grout is filled in the joints 742 in the through hole 712 of the PC joint member 710 and the PC column member 720 below and between the PC members.
The joints 2A and 2B can be constructed by the above steps. And a column beam frame can be built by repeating said process.

According to this embodiment, the same effect as that of the first embodiment can be obtained.
In the present embodiment, the PC beam member 230 constituting the beam 4 is connected to the PC beam / joint member 210 constituting the joint portion 2A, 2B. The part from the end of the concrete to the middle may be integrated with the PC beam / joint 210 member. In this case, the PC beam member and the PC beam / joining member 210 may be connected as described with reference to FIG. 5B. Similarly, in the case where the beam 4 is constructed of cast-in-place concrete, the part from the end to the middle of the concrete that constitutes the beam 4 is constructed integrally with the PC joint member 710, and the fixing member is fixed. After connecting the beam main bar and the beam main bar, the beam and the joint portion may be constructed integrally by placing concrete constituting the remaining portion of the beam.

<Third Embodiment>
Hereinafter, a third embodiment of the present invention will be described in detail with reference to the drawings.
In the present embodiment, as shown in FIG. 14, for the sake of illustration, a case where a column beam frame 1 symmetrical to FIG. 1 is constructed will be described as an example.
15 is a cross-sectional view showing the configuration of the column beam frame 1 of the present embodiment. FIG. 15A is a cross-sectional view taken along the line AA in FIG. 14, and FIG. As shown in the figure, in this embodiment, the PC pillar / joint members 320 and 340 constituting the joints 2A and 2B and the pillar 5 on the lower floor thereof, and a beam extending in the left-right direction in FIG. 4 is constructed by joining the third PC beam member 330 constituting the beam 4 and the fourth PC beam member 310 constituting the beam 3 extending in the left-right direction in FIG.

  PC pillar / joint members 320 and 340 are formed in through holes 322 extending horizontally in the left-right direction in FIG. 15A (the PC pillar / joint member on the left side in FIG. ) Or a reinforcing bar accommodating hole 325 (PC pillar / joining member in the same figure) and a reinforcing bar accommodating hole 323 extending in the left-right direction in FIG. 15B, and a column extending in the vertical direction. A main bar 321 is embedded. The upper end of the column main bar 321 protrudes from the upper surface of the member, and a mechanical joint 352 is connected to the lower end. The reinforcing bar insertion hole of the mechanical joint 352 is opened on the lower surface of the member. A fixing metal (not shown) is embedded in the end of the reinforcing bar housing hole 323, and the end surface of the fixing metal is exposed in a recess formed on the surface of the PC column / joining member 320.

  In the third PC beam member 330, a plurality of beam main bars 331 are embedded so as to extend in the horizontal direction, and a mechanical joint 332 is connected to an end of the beam main bar 331. And the reinforcing bar insertion hole of this mechanical coupling 332 is opened in the member end surface.

  In the fourth PC beam member 310, a plurality of beam main bars 311 are embedded so as to extend in the horizontal direction, one end of the beam main bar 311 protrudes from the end surface of the member, and a mechanical joint 312 is provided at the other end. It is connected. The reinforcing bar insertion hole of the mechanical joint 312 is open to the end surface of the member.

Hereinafter, a method for constructing a joint portion using the PC member will be described with reference to FIGS. 16A to 16F.
In the present embodiment, one third PC beam member connected to the joint portion is already built so that the mechanical joint is located on the joint portion side.
First, the fourth PC beam member 310 located on the left side in FIG. Next, as shown in FIG. 16A, the third PC beam member 330 constituting the beam 4 connected to the joint portion 2A is placed in the horizontal direction so that the mechanical joint 332 is located on the joint portion 2A side. Move and build.

  Next, as shown in FIG. 16B, the lower PC pillar / joint member 320 constituting the joint portion 2A is built from above. As a result, the mechanical joint 312 embedded in the third PC beam member 310 and the through hole 322 of the lower PC column / joint member 320 communicate with each other, and embedded in the fourth PC beam member 330. The reinforcing bar insertion hole of the mechanical joint 332 communicates with the reinforcing bar accommodation hole 323 of the lower PC column / joint member 320.

  Next, as shown in FIG. 16C, the beam main bar 311 protruding from the end surface of the member passes through the through hole 322 of the lower PC pillar / joint member 320, and the tip is already built (that is, FIG. The third PC beam member 310 constituting the right beam 3 in FIG. 15B so as to reach the mechanical joint 312 of the third PC beam member 310) constituting the left beam 3 in A). Move horizontally to build.

Next, as shown in FIG. 16D, the third PC beam member 330 constituting the beam 4 connected to the joint portion 2B is placed horizontally so that the mechanical joint 332 is positioned on the joint portion 2B side. Move and build.
Next, as shown in FIG. 16E, the lower PC pillar / joining member 320 constituting the joint portion 2B is built from above.

Next, as shown in FIG. 16F, the reinforcing bar 333 having a thread on the outer peripheral surface is connected to the reinforcing bar of the PC joint member 320A so that the tip reaches the mechanical joint 332 embedded in the fourth PC beam member 330. The end of the reinforcing bar 333 is fixed to the PC joint member 320A by the fixing member by the method described with reference to FIGS. Then, grout is filled into the mechanical joint 332 embedded in the fourth PC beam member 330 and the reinforcing bar accommodation hole 323 formed in the PC joint member 320A. As a result, the PC beam / joint member 320 and the fourth PC beam member 330 are firmly connected. Similarly to this, the reinforcing bar 324 of the PC joint member 320A constituting the joint part 2B so that the tip of the reinforcing bar 324 reaches the mechanical joint 312 embedded in the third PC beam member 310 is also provided. Then, the end of the reinforcing bar 324 is fixed to the PC joint member 320A by the fixing member by the method described with reference to FIGS. 4A to 4F. Then, grout is filled in the mechanical joint 312 embedded in the third PC beam member 310 and the reinforcing bar accommodation hole 325 formed in the PC joint member 320A. The grout is filled in the joints between the PC members at an appropriate timing.
A column beam frame can be constructed by repeating the above steps. And a column beam frame can be built by repeating said process.

  In this embodiment, the PC column / finishing unit is formed by integrating the PC joint member 320A constituting the joints 2A and 2B and the PC pillar member 320B constituting the pillar 5 below the joints 2A and 2B. Although the case where the mouth member 320 is used has been described, the present invention is not limited thereto, and the PC joint member constituting the joint portions 2A and 2B and the PC pillar member constituting the column 6 above the joint portions 2A and 2B are integrated. You may use the PC pillar and beam member which became.

  Moreover, although this embodiment demonstrated the case where a beam was comprised using a full PC member, you may construct | assemble not only using this but using a half PC member. Furthermore, it is possible to construct the concrete that constitutes the beam by hitting it in the field.

  17 is a vertical cross-sectional view showing a column beam frame constructed by hitting the concrete constituting the beam in-situ, (A) is a cross-sectional view taken along line AA in FIG. 14, and (B) is a cross-sectional view taken along line BB in FIG. It is sectional drawing. As shown in the figure, when the concrete constituting the beam is made on-site, the beam is constructed on-site, and the joint and the column are constructed using PC members.

  Reinforcing bar accommodation holes 823 extending in the left-right direction in FIG. 17B are formed in the PC pillar / joint members 820, 840 in the portions constituting the joint portions 2A, 2B, and so as to extend in the vertical direction. The column main reinforcement 821 is embedded in The upper end of the column main reinforcement 821 protrudes from the upper surface of the member, and a mechanical joint 825 is connected to the lower end. The reinforcing bar insertion hole of the mechanical joint 825 opens on the lower surface of the member.

  Further, the PC column / joint member 820 constituting the joint portion 2A includes a beam main bar 811 embedded so as to extend in the left-right direction in FIG. 17A, and both ends of the beam main bar 811 are from the member surface. It protrudes. Reinforcing bar accommodation holes 826 are formed in the PC pillar / joint member 820 constituting the joint portion 2B so as to extend in the left-right direction in FIG.

Hereinafter, a method for constructing the joint portion will be described with reference to FIGS. 18A to 18C.
First, as shown in FIG. 18A, the PC pillar / joint member 820 is built from above.
Next, as shown in FIG. 18B, the reinforcing bars 833 and 824 having threads on the outer peripheral surface are inserted into the reinforcing bar accommodation holes 823 and 826 so that the tip protrudes from the end face on the opposite side, and FIGS. The ends of the reinforcing bars 833 and 824 are fixed to the PC joint member 810 by the fixing member by the method described with reference to FIG. Then, grout is filled in the reinforcing bar accommodation holes 823 and 826.

Next, as shown in FIG. 18C, beam main bars 851 and 834 are joined to the reinforcing bars 833 and 824, and the beam main bars 851 and 834 constituting the beams 3 and 4 are arranged. Then, the frames 3 and 4 are constructed by installing a formwork on the outer periphery and filling the formwork with concrete.
The joints 2A and 2B can be constructed by the above steps. And a column beam frame can be built by repeating said process.

According to this embodiment, the same effect as that of the first embodiment can be obtained.
In this embodiment, the PC beam member 330 constituting the beam 4 is connected to the PC pillar / joint member 320 constituting the joint portions 2A and 2B. However, the present invention is not limited thereto, and the beam 4 is constituted. The portion from the end of the concrete to the middle may be configured integrally with the PC pillar / joint 320 member. In this case, the PC beam member and the PC beam / joint member 320 may be connected as described with reference to FIG. 5B. Similarly, when the beam 4 is constructed of cast-in-place concrete, the part from the end to the middle of the concrete constituting the beam 4 is constructed integrally with the PC joint member 810, and the fixing member is fixed. After connecting the beam main bar and the beam main bar, the beam and the joint portion may be constructed integrally by placing concrete constituting the remaining portion of the beam.

<Fourth embodiment>
Hereinafter, a fourth embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 19 is a perspective view showing the joint 400 constructed by the method of the present embodiment. 20 is a cross-sectional view taken along line AA in FIG. As shown in FIGS. 19 and 20, the joint portion 400 includes a PC pillar / joint member in which a PC pillar member 410 constituting the pillar 7 and a PC joint member 420 constituting the joint portion 8 are integrated. PC beam members 430 and 440 are joined to both sides of the 450 joint 8.

The PC beam member 440 includes four beam main bars 441 that are embedded in the upper and lower sides of the member so as to extend in the axial direction, and the front ends of these beam main bars 441 protrude from the end of the member.
As with the PC beam member 440, the PC beam member 430 has four beam main bars 431 embedded in the upper and lower portions of the member, and two beam main bars 435 embedded in the center of the four beam main bars 431. Has been. In addition, mechanical joints 432 and 434 are connected to the end portions of the beam main bars 431 and 435, and the reinforcing bar insertion holes of the mechanical joints 432 and 434 are open on the end surfaces of the members.

  The PC pillar / joint member 450 is formed with a through-hole 422 penetrating in the horizontal direction at a position corresponding to the mechanical joint 432 embedded in the PC beam member 430, and embedded in the PC beam member 430. A reinforcing bar accommodation hole 423 extending in the horizontal direction is formed at a position corresponding to the mechanical joint 434. A fixing metal (not shown) is embedded in the end of the reinforcing bar accommodation hole 423, and the end surface of the fixing metal is exposed in a recess formed on the surface of the PC column / joining member 420.

Hereinafter, a method for constructing the joint portion of the present embodiment will be described with reference to FIGS. 21A to 21C.
First, the PC pillar / sealing member 450 is installed.
Next, as shown in FIG. 21A, the PC beam member 430 is built in the side portion of the PC pillar / joint member 450. Thereby, the reinforcing bar accommodation hole 423 and the through hole 422 formed in the PC pillar / joining member 450 communicate with the reinforcing bar insertion holes of the mechanical joints 432 and 424 opened on the member end surface of the PC beam member 430. Become.

  Next, as shown in FIG. 21B, a reinforcing bar 424 having a thread on the outer peripheral surface is inserted into the reinforcing bar accommodation hole 423 of the PC connection member 420, and the tip thereof reaches into the mechanical joint 434 of the PC beam member 430. Arrange as follows. Then, the end of the reinforcing bar 424 is fixed to the PC joint member 420 by the fixing member by the method described with reference to FIGS. 4A to 4F.

Next, as shown in FIG. 21C, the main beam 441 protruding from the end surface of the PC beam member 440 passes through the through-hole 422 formed in the PC column / joint member 420, and the tip thereof is connected to the PC beam member 430. It is moved and built in the horizontal direction so as to reach the embedded mechanical joint 434.
Then, grout is filled in the joints between the reinforcing bar accommodation holes 423, the through holes 422, the mechanical joints 432 and 434, and the PC members of the PC joint member 420.
The joint portion 8 can be constructed by the above steps.

  In this embodiment, the case where the beam is configured using the full PC member has been described. However, the present invention is not limited thereto, and the beam may be configured using a half PC member. Furthermore, it is possible to construct the concrete that constitutes the beam by hitting it in the field.

  FIG. 22 is a cross-sectional view taken along line AA in FIG. 19 showing a column beam frame constructed by hitting concrete constituting the beam in the field. As shown in the figure, the beam is made by hitting concrete on-site, and the joint portion 8 and the pillar 7 are constructed using PC pillar / joint members 950 constituting these portions.

  The PC pillar / joint member 950 has four beam main bars 922 embedded in the horizontal direction above and below the joint part 920, and both side parts on the center side of the member from these beam main bars 922. Reinforcing bar accommodation holes are formed so as to extend in the horizontal direction. A fixing metal (not shown) is embedded in the end of the reinforcing bar housing hole 423, and the end surface of the fixing metal is exposed in a recess formed on the right end surface of the PC column / joining member 420 in FIG. ing.

Hereinafter, a method for constructing the joint portion of the present embodiment will be described with reference to FIGS. 23A to 23C.
First, as shown in FIG. 23A, a PC pillar / joint member 950 is built.
Next, as shown in FIG. 23B, a reinforcing bar 924 having a thread on the outer peripheral surface is inserted into a reinforcing bar accommodation hole 923 of the PC fitting member 920, and its tip protrudes from the opposite surface of the PC fitting member 920. Let Then, the end of the reinforcing bar 924 is fixed to the PC joint member 920 by the fixing member by the method described with reference to FIGS. 4A to 4F. Then, grout is filled into the reinforcing bar accommodation hole 923.

Next, as shown in FIG. 23C, the beam main bars 931 and 941 of the beams 9A and 9B are joined to the beam main bar 922, and the beam main bar 935 is joined to the reinforcing bar 924. Then, the beams 9A and 9B are constructed by installing a formwork on the outer periphery and filling the formwork with concrete.
The joint 8 can be constructed by the above steps.

According to this embodiment, the same effect as that of the first embodiment can be obtained.
In this embodiment, the PC beam member 130 that constitutes the beam 4 is connected to the PC column / joint member 450 that constitutes the joint portion 8. However, the present invention is not limited to this, and the beams 9A and 9B are constituted. The part from the end of the concrete to the middle may be integrated with the PC pillar / finishing 450 member. In this case, as described with reference to FIG. 5B, the reinforcing bar 424 whose end is fixed to the column / joint member 450 and the beam main bar 435 of the PC beam member 430 can be joined.
Similarly, when the beam 4 is constructed of cast-in-place concrete, the part from the end to the middle of the concrete constituting the beams 9A and 9B is constructed integrally with the PC pillar / joint member 950, and the fixing member After joining the reinforcing bar to which the beam is fixed and the beam main bar, the beam and the joint may be constructed integrally by placing concrete constituting the remaining portions of the beams 9A and 9B.

  In each of the above embodiments, the case has been described in which the PC joint member and the on-site beam or the PC beam member are joined. However, the present invention is not limited to this, and the large beam and the small beam configured by the PC member, the PC member. The present invention can be applied to a case where a PC member and a concrete member such as a beam and a wall constituted by the above are joined.

Moreover, the position of the joint of a beam main reinforcement in each said embodiment may be provided in a beam end part, and may be provided in a beam intermediate part.
Further, in each of the above-described embodiments, the case where the reinforcing bar insertion hole of the mechanical joint is open to the joining end surface of the member has been described. However, as described with reference to FIG. 5A, the mechanical joint is a member. It may be embedded inside.

It is a perspective view which shows the column beam frame constructed | assembled by the method of 1st-3rd embodiment. (A) is a horizontal sectional view showing a joint part constructed by connecting a PC beam member to one side surface of a PC joint member, and (B) is an enlarged view of part A in (A). . It is FIG. (1) for demonstrating the method to fix a fixing metal fitting to a reinforcing bar. It is FIG. (2) for demonstrating the method to fix a fixing metal fitting to a reinforcing bar. It is FIG. (3) for demonstrating the method to fix a fixing metal fitting to a reinforcing bar. It is FIG. (4) for demonstrating the method to fix a fixing metal fitting to a reinforcing bar. It is a figure which shows embodiment at the time of using the fixing metal object in which the injection hole was provided in any one of the axial holes of the through-hole. It is a horizontal sectional view showing the case where the fixing hardware is embedded in the PC member so that the collar portion is located on the center side of the member. It is a horizontal sectional view showing the case where a mechanical joint joins a PC beam member embedded in a member and a PC joint member. It is a horizontal sectional view showing the case where the PC beam / joint member constituting the joint and the end of the beam and the PC beam member constituting the center of the beam are joined. It is a figure which shows the structure of the column beam frame shown in FIG. 1 at the time of constructing | assembling by the method of 1st Embodiment, (A) is AA sectional drawing in FIG. 1, (B) is B in FIG. -It is B sectional drawing. It is FIG. (1) for demonstrating the method to construct | assemble a column beam frame by the method of 1st Embodiment. It is FIG. (2) for demonstrating the method to construct | assemble a column beam frame by the method of 1st Embodiment. It is FIG. (3) for demonstrating the method to construct | assemble a column beam frame by the method of 1st Embodiment. It is FIG. (4) for demonstrating the method to construct | assemble a column beam frame by the method of 1st Embodiment. It is FIG. (5) for demonstrating the method to construct | assemble a column beam frame by the method of 1st Embodiment. It is a figure which shows the column beam frame shown in FIG. 1 at the time of constructing on-site the concrete which comprises a beam in the method of 1st Embodiment, (A) is AA sectional drawing in the same figure in FIG. (B) is a BB sectional view in FIG. It is FIG. (1) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field in the method of 1st Embodiment. It is FIG. (2) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field method in the method of 1st Embodiment. It is FIG. (3) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field in the method of 1st Embodiment. It is FIG. (4) for demonstrating the method of constructing | assembling a column beam frame by using the concrete which comprises a beam in the field in the method of 1st Embodiment. It is a figure which shows the structure of the column beam frame shown in FIG. 1 at the time of constructing | assembling by the method of 2nd Embodiment, (A) is AA sectional drawing in FIG. 1, (B) is B in FIG. -It is B sectional drawing. It is FIG. (1) for demonstrating the method to construct | assemble a column beam frame by the method of 2nd Embodiment. It is FIG. (2) for demonstrating the method to construct | assemble a column beam frame by the method of 2nd Embodiment. It is FIG. (3) for demonstrating the method to construct | assemble a column beam frame by the method of 2nd Embodiment. It is FIG. (4) for demonstrating the method to construct | assemble a column beam frame by the method of 2nd Embodiment. It is FIG. (5) for demonstrating the method to construct | assemble a column beam frame by the method of 2nd Embodiment. It is a figure which shows the column beam frame shown in FIG. 1 at the time of constructing on-site the concrete which comprises a beam in the method of 2nd Embodiment, (A) is AA sectional drawing in the same figure in FIG. (B) is a BB sectional view in FIG. It is FIG. (1) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field method in the method of 2nd Embodiment. It is FIG. (2) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field method in the method of 2nd Embodiment. It is FIG. (3) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field in the method of 2nd Embodiment. It is FIG. (4) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field in the method of 2nd Embodiment. It is a perspective view which shows the column beam frame constructed | assembled by the method of 3rd Embodiment. FIG. 15 is a diagram illustrating a configuration of a column beam frame illustrated in FIG. 14 when constructed by the method of the third embodiment, in which (A) is a cross-sectional view taken along line AA in FIG. 14, and (B) in FIG. -It is B sectional drawing. It is FIG. (1) for demonstrating the method to construct | assemble a column beam frame by the method of 3rd Embodiment. It is FIG. (2) for demonstrating the method to construct | assemble a column beam frame by the method of 3rd Embodiment. It is FIG. (3) for demonstrating the method to construct | assemble a column beam frame by the method of 3rd Embodiment. It is FIG. (4) for demonstrating the method to construct | assemble a column beam frame by the method of 3rd Embodiment. It is FIG. (5) for demonstrating the method to construct | assemble a column beam frame by the method of 3rd Embodiment. It is FIG. (6) for demonstrating the method to construct | assemble a column beam frame by the method of 3rd Embodiment. It is a figure which shows the structure of the column beam frame shown in FIG. 14 at the time of constructing on-site the concrete which comprises a beam with the method of 3rd Embodiment, (A) is AA sectional drawing in FIG. FIG. 4B is a cross-sectional view taken along the line BB in FIG. It is FIG. (1) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field method in the method of 3rd Embodiment. It is FIG. (2) for demonstrating the method to construct | assemble a column beam frame by using the concrete which comprises a beam in the field method in the method of 3rd Embodiment. It is FIG. (3) for demonstrating the method of constructing | assembling a column beam frame by using the concrete which comprises a beam in the field in the method of 3rd Embodiment. It is a perspective view which shows the joint part constructed | assembled by the method of 4th Embodiment. It is AA sectional drawing in FIG. It is a perspective view (the 1) for demonstrating the method of constructing a joint part by the method of 4th Embodiment. It is a perspective view (the 2) for demonstrating the method of constructing a joint part by the method of 4th Embodiment. It is a perspective view (the 3) for demonstrating the method of constructing a joint part by the method of 4th Embodiment. It is AA sectional drawing in FIG. 19 at the time of setting the concrete which comprises a beam in the method of 4th Embodiment as a spot casting. It is the perspective view (the 1) for demonstrating the method to construct | assemble a joint part in the case of the concrete which comprises a beam in the method of 4th Embodiment when setting it on-site. It is a perspective view (the 2) for demonstrating the method of constructing | assembling the joint part when the concrete which comprises a beam in the method of 4th Embodiment is made on-site. It is the perspective view (the 3) for demonstrating the method of constructing | assembling the joint part in the case of making the concrete which comprises a beam into the spot in the method of 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Column beam frame 2A, 2B Joint part 3, 4 Beam 5, 6 Column 7 Column 8 Joint part 9A, 9B Beam 10 PC joint member 11 Reinforcing bar accommodation hole 12 Recess 13 Injection hole 20 PC beam member 21 Beam main reinforcement 22 Mechanical joint 23 Reinforcing bar insertion hole 30, 70, 80 Fixing hardware 30A, 70A Through hole 31, 71 Thread 32, 72, 82 Gutter 33, 73, 83 Injection hole 34, 74 Gap 40 Reinforcing bar 41 Thread 50 Nut 51 Thread 54 Gap 110 PC beam / joint member 110A PC joint member 110B Second PC beam member 111 Beam main bar 112 Through hole 113 Reinforcing bar housing hole 120 PC column member 121 Lower column main bar 130 First PC beam member 131 Beam bar 132 Mechanical joint 133 Reinforcement 140 Upper PC column member 141 Column main bar 142 Mechanical joint 210 PC beam / joint member 210A PC joint member 210B 2 PC beam member 211 Beam main bar 212 Through hole 213 Reinforcing bar accommodation hole 220 Lower PC column member 221 Column main bar 222 Mechanical joint 230 First PC beam member 231 Beam main bar 232 Mechanical joint 233 Reinforcement 240 Upper PC column member 241 Column main bar 310 PC beam member 311 Beam main bar 312 Mechanical joint 320 PC column / joint member 320A PC joint member 320B PC column member 321 Column main bar 322 Through hole 323 Reinforcing bar accommodation hole 324 Reinforcement 330 PC beam member 331 Beam main bar 332 Mechanical joint 333 Reinforcing bar 340 PC column / joint member 341 Column main bar 342 Mechanical joint 352 Mechanical joint 400 Column beam joint 410 PC column member 411 Column main bar 420 PC joint member 422 Through hole 423 Reinforcing bar accommodation hole 424 Reinforcing bar 430 PC beam member 431 beam main bar 432 mechanical joint 434 machine Type joint 435 Beam main bar 440 PC beam member 441 Beam main bar 610 PC joint member 611 Beam main bar 612 Through hole 613 Reinforcing bar accommodation hole 620 PC column member 621 Column main bar 630 PC beam member 631 Beam main bar 633 Rebar 640 PC column member 641 Column main bar 642 Mechanical joint 651 Beam main bar 710 PC joint member 712 Through hole 713 Reinforcing bar accommodation hole 720 PC column member 721 Column main bar 722 Mechanical joint 733 Rebar 734 Beam main bar 740 PC column member 741 Column main bar 751 Beam main bar 810 PC port member 811 Beam main bar 820 PC column member 821 Column main bar 822 Reinforcing bar accommodation hole 823 Reinforcing bar accommodation hole 824 Reinforcing bar 825 Mechanical joint 826 Reinforcing bar accommodation hole 833 Reinforcing bar 840 PC column member 841 Column main bar 842 Mechanical coupling 851 Beam main bar 910 Column Main muscle 920 PC joint part 922 beam main reinforcement 923 rebar receiving hole 924 rebar 931 beam main reinforcement 935 Beam main reinforcement 941 Beam main reinforcement 950 PC-column Joint member

Claims (11)

A fixing hardware having a through-hole with a thread formed on the inner peripheral surface and having one end exposed on one surface of the member, and the other surface of the fixing metal from the opposite surface to the other end of the fixing metal A method of constructing a concrete structure in which a PC member provided with a reinforcing bar housing hole formed so as to be joined to a concrete member in which a reinforcing bar is embedded,
A reinforcing bar screwing step of screwing one end of a reinforcing bar having a thread formed on the outer peripheral surface thereof to the fixing metal;
A filler filling step of filling a filler into a gap between the fixing metal and the reinforcing bar from an injection hole communicating with the through hole of the fixing metal;
A concrete member construction step for constructing or installing a concrete member connected to the opposite surface of the PC member,
In the rebar screwing step, the fixing metal is configured so that the filler filled in the gap is less likely to overflow from the one end side than the other end side,
In the filler filling step, the filler is filled until it overflows from the one end side of the through hole,
In the concrete member construction step, a concrete structure formed by joining a PC member and a concrete member, wherein the other end of the reinforcing bar is joined to at least a part of the reinforcing bar embedded in the concrete member. How to build. A fixing hardware having a through-hole with a thread formed on the inner peripheral surface and having one end exposed on one surface of the member, and the other surface of the fixing metal from the opposite surface to the other end of the fixing metal A method of constructing a structure composed of a joint portion and a beam using a PC joint member provided with a reinforcing bar accommodation hole formed to
A reinforcing bar screwing step of screwing one end of a reinforcing bar having a thread formed on the outer peripheral surface thereof to the fixing metal;
A filler filling step of filling a filler into a gap between the fixing metal and the reinforcing bar from an injection hole communicating with the through hole of the fixing metal;
A beam construction step of constructing or installing a beam connected to the opposite surface of the joint portion, and
In the rebar screwing step, the fixing metal is configured so that the filler filled in the gap is less likely to overflow from the one end side than the other end side,
In the filler filling step, the filler is filled until it overflows from the one end side of the through hole,
In the beam construction step, the other end of the reinforcing bar is joined to at least a part of the beam main reinforcing bars constituting the beam. A method of constructing a structure according to claim 2,
The PC joint member is constructed integrally with a PC beam member constituting at least a part of a beam connected to at least one of both side surfaces adjacent to the one surface of the joint portion. A structure construction method characterized by the above. A method for constructing a structure according to claim 2 or 3,
The PC joint member is constructed integrally with a PC pillar member that constitutes at least a part of at least one of upper and lower pillars of the joint part. A method for constructing a structure according to any one of claims 2 to 4,
The joint portion is formed with a through-hole penetrating the one surface and the opposite surface,
In the beam construction step,
Build a beam connected to the one surface so that the main beam of the beam passes through the through hole,
The other end of the reinforcing bar and a part of the beam main reinforcing bars constituting the beam joined to the opposite surface are jointed, and the beam main reinforcing bar of the beam connected to the one surface passing through the through hole is opposite to the opposite side. A method for constructing a structure, comprising: joining a remaining main bar constituting a beam joined to a surface. A PC beam / joint member that integrally forms a joint portion and a beam end portion from the beam end to the middle of the beam connected to the joint portion, and a through hole in which a thread is formed on the inner peripheral surface A fixing hardware embedded so that one end side is exposed on a surface opposite to a side to which the beam of the joint portion is joined, and an end surface on the intermediate side of a portion constituting the beam. A method of constructing a structure composed of a joint portion and a beam using a PC beam / joint member provided with a reinforcing bar accommodation hole formed so as to reach the other end side of the fixing hardware,
A reinforcing bar screwing step of screwing one end of a reinforcing bar having a thread formed on the outer peripheral surface thereof to the fixing metal;
A filler filling step of filling a filler into a gap between the fixing metal and the reinforcing bar from an injection hole communicating with the through hole of the fixing metal;
A beam construction step of constructing or installing a part of the beam connected to the beam end of the PC beam / joint member,
In the rebar screwing step, the fixing metal is configured so that the filler filled in the gap is less likely to overflow from the one end side than the other end side,
In the filler filling step, the filler is filled until it overflows from the one end side of the through hole,
In the beam construction step, the other end of the reinforcing bar is joined to at least a part of the beam main reinforcing bars constituting the beam. A method for constructing a structure comprising a joint portion and a beam according to any one of claims 2 to 6,
In the fixing metal, since the injection hole is formed on the other end side with respect to the intermediate part of the fixing metal, the filler filled in the gap overflows from the one end side rather than the other end side. A method characterized by being configured to be difficult. A method for constructing a structure including a joint portion and a beam according to any one of claims 2 to 7,
The fixing metal is screwed into the one end side with the reinforcing bar, and a nut is attached so as to come into contact with the fixing metal, so that the filler filled in the gap is closer to the one end side than the other end side. A method characterized by being configured to prevent overflow. A method for constructing a structure including a joint portion and a beam according to any one of claims 2 to 8,
The fixing metal is screwed into the reinforcing bar, and the nut is tightened to the one end side so that the filler filled in the gap is less likely to overflow from the one end side than the other end side. A method characterized in that it is configured. A method for constructing a structure including a joint portion and a beam according to any one of claims 2 to 9,
In the beam building step, a PC beam member constituting at least a part of the beam is built. A method for constructing a structure including a joint portion and a beam according to any one of claims 2 to 9,
In the beam construction step, the beam is constructed by placing concrete constituting at least a part of the beam.