JP5008522B2 - Precast concrete member joint structure, building, and building construction method - Google Patents

Description

  The present invention relates to a precast concrete member joint structure, a building having a precast concrete member joint structure, and a building construction method having a precast concrete member joint structure.

  In the construction of reinforced concrete buildings, precast column members and beam members are actively used in order to save construction workers and improve construction efficiency. In particular, in the construction of high-rise buildings, rationalization of construction is important for shortening the construction period and reducing costs, and therefore construction using precast column members and beam members is effective.

  For example, a building-to-column connection structure 300 as shown in FIG. 28 is employed. In the column beam connection structure 300, a PCa horizontal structure 308 in which a column fitting 304 and a large beam 306 are integrated is placed on a precast concrete (hereinafter referred to as PCa) column 302. .

A column sleeve 312 is embedded in the column base portion of the PCa column 310 placed on the PCa horizontal structure 308. Then, the column connecting rebar 316 provided so as to protrude upward from the PCa column 302 is passed through the vertical through-hole 314 formed in the column connection portion 304. Further, by inserting and fixing the end portion of the column connection reinforcing bar 316 into the column sleeve 312 of the PCa column 310, the PCa column 302 and the PCa column 310 are joined to each other via the column connection portion 304. is doing.
The opposing large beams 306 are provided with beam connection reinforcing bars 320 so as to protrude from the ends of the large beams 306. Then, the end portions of the protruding beam connecting rebar 320 are connected to each other by a mechanical joint 318, a formwork is provided at a joint portion between the large beams 306, and concrete U is post-placed to join the large beams 306 to each other. ing.

  Further, as shown in FIG. 29, in the column beam joint structure 322 of the building of Patent Document 1, a PCa horizontal structure 330 in which a column fitting 326 and a large beam 328 are integrated on a PCa column 324. Is placed.

A beam sleeve 332 is embedded in the end of the beam 328 of the PCa horizontal structure 330 positioned on the left side, and the beam sleeve 332 is projected from the end of the beam 328 in the PCa horizontal structure 330 positioned on the right side. A connecting rebar 334 is provided. Then, the right-hand PCa horizontal structure 330 is horizontally moved to the left side, and the ends of the protruding beam connecting reinforcing bars 334 are inserted into the beam sleeve 332 and fixed, thereby joining the large beams 328 to each other.
A column sleeve 338 is embedded in the column head of the PCa column 324. Then, a column connecting reinforcing bar 340 provided so as to protrude downward from a PCa column 336 placed on the PCa horizontal structure 330 is formed into a vertical through hole 342 formed in the column fitting portion 326. To penetrate. Further, by inserting and fixing the end of the column connection reinforcing bar 340 into the column sleeve 338 of the PCa column 324, the PCa column 324 and the PCa column 336 are joined via the column port 326. is doing.

28, when the PCa column 310 is placed on the PCa horizontal structure 308, the horizontal movement of the PCa column 310 is restricted, and the column beam connection of FIG. In the structure 322, when the PCa column 336 is placed on the PCa horizontal structure 330, the horizontal movement of the PCa column 336 is restricted.
That is, after placing the upper column members (PCa columns 310 and 336) on the horizontal members (PCa horizontal structures 308 and 330) including the column beam joints and the beam portions, the building accuracy is improved. For this reason, it is difficult to adjust the position by moving the upper pillar member in the horizontal direction.
Japanese Patent Application Laid-Open No. 2004-346587

  In consideration of the fact, the present invention can move the upper column member made of precast concrete placed on the horizontal member made of precast concrete composed of the column beam joint portion and the beam portion horizontally or horizontally. It is an object of the present invention to provide a precast concrete member joining structure, a building having a precast concrete member joining structure, and a construction method for a building having a precast concrete member joining structure.

  The invention according to claim 1 includes a lower column member made of precast concrete, a column beam joint portion, and a beam portion integrated with the column beam joint portion, and the column beam finish is formed on the lower column member. A horizontal member made of precast concrete on which the mouth portion is placed, a first insertion portion formed in the lower beam member or the column beam joint portion of the horizontal member, and having a hole or a space, and the column beam of the horizontal member It is accommodated in the joint part or the lower column member, and is pulled out from the column beam joint part or the lower column member of the horizontal member and inserted into the first insertion part, and the lower column member and the horizontal member A column head joint member for joining the column beam joint portion, an upper column member made of precast concrete placed on the column beam joint portion of the horizontal member, and the column beam joint portion of the horizontal member or the A second insertion part formed in the upper column member and comprising a hole or a space; The member or the horizontal member is housed in the column beam joint, and is pulled out of the column member joint of the upper column member or the horizontal member and inserted into the second insertion portion. It has the column base part joining member which joins a joint part and the said upper pillar member, It is characterized by the above-mentioned.

In the first aspect of the invention, the horizontal member made of precast concrete is constituted by the column beam joint and the beam unit integrated with the column beam joint. And the column beam joint part of a horizontal member is mounted on the lower column member made from precast concrete.
Moreover, the 1st insertion part which consists of a hole or space is formed in the column beam joint part of a lower pillar member or a horizontal member. Then, the column head joint member accommodated in the column beam joint portion of the horizontal member or the lower column member is pulled out and inserted into the first insertion portion, and the lower column member and the column beam joint portion of the horizontal member are joined. .
Further, an upper column member made of precast concrete is placed on the column beam joint of the horizontal member.
Furthermore, the 2nd insertion part which consists of a hole or a space is formed in the column beam joint part or upper pillar member of a horizontal member. Then, the column base joint member housed in the column member joint of the upper pillar member or the horizontal member is pulled out and inserted into the second insert part, and the column beam joint of the horizontal member and the top pillar member are joined. To do.

Therefore, when two horizontal members are arranged next to each other and the beam portions of these horizontal members are joined together, the column head joint member is accommodated in the column beam joint portion or the lower column member of the horizontal member, and the horizontal member It does not protrude from the column beam joint or lower column member. Thereby, one side of the horizontal member arrange | positioned adjacently can be moved to a horizontal direction or a horizontal, and the beam parts of a horizontal member can be joined.
The beam part (horizontal member) is laterally moved or horizontally moved so that the beam parts are joined to each other. The end faces of the beam parts are brought into close contact with each other or the gap formed between the end faces of the beam parts. Can be reduced.
That is, it is possible to eliminate the work of post-molding the concrete by providing a formwork at the joint between the beam portions, and the workability can be improved.

  Further, when the column beam joint of the horizontal member is placed on the lower column member, the column head joint member is accommodated in the column beam joint of the horizontal member or the lower column member, and the column beam of the horizontal member It does not protrude from the joint or lower pillar member. Thereby, the column beam joint part of the horizontal member mounted on the lower column member can be moved horizontally or horizontally. That is, after placing the column beam joint of the horizontal member on the lower column member, the position of the horizontal member can be adjusted.

  Further, when the upper column member is placed on the column beam joint portion of the horizontal member, the column leg joint member is accommodated in the upper column member or the column beam joint portion of the horizontal member, and the upper column member or It does not protrude from the column beam joint of the horizontal member. Thereby, the upper pillar member mounted on the column beam joint part of a horizontal member can be moved horizontally or horizontally. That is, after placing the upper column member on the column beam joint of the horizontal member, the position of the upper column member can be adjusted in order to improve the construction accuracy.

  The invention according to claim 2 includes a column beam joint portion and a beam portion integrated with the column beam joint portion, and a column reinforcing bar is provided so as to protrude upward from the column beam joint portion. A lower horizontal member made of precast concrete, a column member made of precast concrete placed on a column beam joint of the lower horizontal member, and formed on the column member, the column member being a column of the lower horizontal member A through-hole into which the column reinforcing bar is inserted so that the column reinforcing bar does not protrude from the upper surface of the column member when placed on the beam connecting unit, a column beam connecting unit, and the column beam connecting unit; An upper horizontal member made of precast concrete, which is constituted by an integrated beam portion and on which the column beam joint is placed, and is formed in the column beam joint of the column member or the upper horizontal member An insertion portion comprising a hole or a space, and a column beam joint portion of the upper horizontal member or The column beam joint of the lower horizontal member is accommodated in the column member and pulled out from the column member or the column member of the upper horizontal member and inserted into the insertion portion. And a column head joint member for joining the column beam joint of the upper horizontal member.

In the invention described in claim 2, the lower horizontal member made of precast concrete is constituted by the column beam joint and the beam unit integrated with the column beam joint. The lower horizontal member is provided with column reinforcing bars so as to protrude upward from the column beam joint of the lower horizontal member.
A column member made of precast concrete is placed on the column beam joint of the lower horizontal member. The column member has a through hole, and is provided so as to protrude upward from the column beam joint of the lower horizontal member when the column member is placed on the column beam joint of the lower horizontal member. The column reinforcement is inserted into the through hole of the column member so as not to protrude from the upper surface of the column member.
Further, the upper horizontal member made of precast concrete is constituted by the column beam joint portion and the beam portion integrated with the column beam joint portion. Then, the column beam joint of the upper horizontal member is placed on the column member.
Furthermore, the insertion part which consists of a hole or a space is formed in the column beam joint part of a column member or an upper horizontal member. Then, the column beam joint portion of the upper horizontal member or the column head joint member housed in the column member is pulled out and inserted into the insertion portion, and the column beam joint portion of the lower horizontal member and the upper horizontal member are inserted through the column member. Join the column beam joint.

Therefore, when two upper horizontal members are arranged next to each other and the beam portions of these upper horizontal members are joined to each other, the column head joint member is accommodated in the column beam joint or column member of the upper horizontal member, It does not protrude from the column beam joint or column member of the upper horizontal member. Thereby, one side of the upper horizontal member arrange | positioned adjacently can be moved to a horizontal direction or a horizontal, and the beam parts of an upper horizontal member can be joined.
Such a method in which the beam portions (upper horizontal members) are laterally moved or horizontally moved to join the beam portions, the end surfaces of the beam portions are brought into close contact with each other or formed between the end surfaces of the beam portions. The gap can be reduced.
That is, it is possible to eliminate the work of post-molding the concrete by providing a formwork at the joint between the beam portions, and the workability can be improved.

  Further, when the column beam joint of the upper horizontal member is placed on the column member, the column head joint member is accommodated in the column beam joint or column member of the upper horizontal member, and the column of the upper horizontal member It does not protrude from the beam joint or column member. Thus, when the next column member is placed on the column beam joint of the upper horizontal member in the same manner as the column member is placed on the lower horizontal member, the column beam of the upper horizontal member is placed. The column member placed on the joint portion can be moved laterally or horizontally together with the column beam joint portion of the upper horizontal member. That is, after placing the next column member on the column beam joint of the upper horizontal member, in order to improve the construction accuracy, the column member placed on the column beam joint of the upper horizontal member The position can be adjusted.

  The invention according to claim 3 includes a lower column member made of precast concrete, a column beam joint, and a beam unit integrated with the column beam joint, and the column beam finish is formed on the lower column member. A precast concrete horizontal member on which the mouth portion is placed, and a precast concrete upper pillar member that is provided on the column beam joint portion of the horizontal member, and is provided with column reinforcing bars so as to protrude downward. And the column rebar is formed from the lower surface of the column beam joint portion of the horizontal member when the upper column member is placed on the column beam joint portion of the horizontal member. A through hole into which the column reinforcing bar is inserted so as not to protrude, and an insertion part formed of a hole or a space formed in a column beam joint of the lower column member or the horizontal member, and a column beam finish of the horizontal member. While being accommodated in the mouth part or the lower pillar member, the column beam joint part of the horizontal member Has a column head joint member that is pulled out from the lower column member and inserted into the insertion portion, and joins the lower column member and the upper column member via the column beam joint portion of the horizontal member. It is characterized by.

In the invention according to claim 3, the horizontal member made of precast concrete is constituted by the column beam joint and the beam unit integrated with the column beam joint. And the column beam joint part of a horizontal member is mounted on the lower column member made from precast concrete.
Further, an upper column member made of precast concrete is placed on the column beam joint of the horizontal member. The upper column member is provided with column reinforcing bars so as to protrude downward.
In addition, a through hole is formed in the column beam joint of the horizontal member so that when the upper column member is placed on the column beam joint of the horizontal member, it protrudes downward from the upper column member. The provided column reinforcement is inserted into a through hole formed in the column beam joint of the horizontal member so as not to protrude from the lower surface of the column beam joint of the horizontal member.
Furthermore, the insertion part which consists of a hole or a space is formed in the column beam joint part of a lower column member or a horizontal member. Then, the column head joint member housed in the column beam joint portion of the horizontal member or the lower column member is pulled out and inserted into the insertion portion, and the lower column member and the upper column member are inserted through the column beam joint portion of the horizontal member. And join.

Therefore, when two horizontal members are arranged next to each other and the beam portions of these horizontal members are joined together, the column head joint member is accommodated in the column beam joint portion or the lower column member of the horizontal member, and the horizontal member It does not protrude from the column beam joint or lower column member. Thereby, one side of the horizontal member arrange | positioned adjacently can be moved to a horizontal direction or a horizontal, and the beam parts of a horizontal member can be joined.
The beam part (horizontal member) is laterally moved or horizontally moved so that the beam parts are joined to each other. The end faces of the beam parts are brought into close contact with each other or the gap formed between the end faces of the beam parts. Can be reduced.
That is, it is possible to eliminate the work of post-molding the concrete by providing a formwork at the joint between the beam portions, and the workability can be improved.

  Further, when the column beam joint of the horizontal member is placed on the lower column member, the column head joint member is accommodated in the column beam joint of the horizontal member or the lower column member, and the column beam of the horizontal member It does not protrude from the joint or lower pillar member. Thereby, the column beam joint part of the horizontal member mounted on the lower column member can be moved horizontally or horizontally. That is, after placing the column beam joint of the horizontal member on the lower column member, the position of the horizontal member can be adjusted.

  In addition, when the upper column member is placed on the column beam joint of the horizontal member, the column head joint member is accommodated in the column beam joint or lower column member of the horizontal member. It does not protrude from the joint or lower pillar member. Thereby, the upper column member mounted on the column beam joint of the horizontal member can be moved in the horizontal direction or horizontally together with the column beam joint of the horizontal member. That is, after placing the upper column member on the column beam joint of the horizontal member, the position of the upper column member can be adjusted in order to improve the construction accuracy.

  The invention according to claim 4 is characterized in that the column head joint member or the column base joint member is a hollow tube connecting column reinforcing bars provided in each member to be joined.

In the invention according to claim 4, the column head joining member or the column base joining member is a hollow tube, and the column reinforcing bars provided in each member to be joined are connected by this hollow tube.
Therefore, column reinforcement can be reliably connected by a hollow tube. Moreover, after connecting column reinforcement with a hollow tube, if a hardening | curing material is inject | poured in a hollow tube and a column reinforcement is fixed to a hollow tube, a column reinforcement can be fixed to a hollow tube reliably.

  The invention according to claim 5 is that the column head joint member or the column base joint member is a bar disposed so as to overlap in a longitudinal direction with respect to the column reinforcement provided in each member to be joined. It is characterized by.

In the invention according to claim 5, the column head joint member or the column base joint member is used as a rod, and this rod is arranged so as to overlap in the longitudinal direction with respect to the column reinforcing bar provided in each member to be joined. To do.
Therefore, the bar as a joining member can be arrange | positioned, without receiving big restrictions on arrangement | positioning and the number of column reinforcement provided in each member.

  The invention according to claim 6 is characterized in that it has the joint structure of precast concrete members according to any one of claims 1 to 5.

  In invention of Claim 6, the building which construction quality improved can be constructed | assembled by having the joining structure of the precast concrete member of any one of Claims 1-5.

  The invention according to claim 7 is a column beam of a horizontal member made of precast concrete comprising a column beam joint portion and a beam portion integrated with the column beam joint portion on a lower column member made of precast concrete. A horizontal member installation step for placing the joint portion, and a column head joint member housed in the column beam joint portion or the lower column member of the horizontal member is connected to the column beam joint portion or the lower column of the horizontal member. Pulled out from the member, inserted into a first insertion part formed of a hole or space formed in a column beam joint part of the lower column member or the horizontal member, the lower column member and the column beam joint part of the horizontal member, A column head joining step, a top column member installation step of placing an upper column member made of precast concrete on a column beam joint of the horizontal member, and a column beam finish of the upper column member or the horizontal member. The upper column member is connected to the column base member that is accommodated in the mouth. Is pulled out from the column beam joint of the horizontal member, and is inserted into the column beam joint of the horizontal member or the second insertion portion formed in the upper column member and having a hole or space, And a column base part joining step for joining the joint part and the upper pillar member.

  In invention of Claim 7, it has a horizontal member installation process, a pillar head joining process, an upper pillar member installation process, and a column base part joining process.

In the horizontal member installation step, the horizontal member made of precast concrete is placed on the lower pillar member made of precast concrete. The horizontal member includes a column beam joint and a beam unit integrated with the column beam joint, and the column beam joint of the horizontal member is placed on the lower column member.
In the column head joining step, first, the column head joining member housed in the column beam joint or the lower column member of the horizontal member is pulled out. Next, the column head joint member formed in the column beam joint portion of the lower column member or the horizontal member and drawn from the column beam joint portion or the lower column member of the horizontal member to the first insertion portion formed of a hole or a space. Insert. And thereby, a lower pillar member and the column beam joint part of a horizontal member are joined.
In the upper column member installation process, the upper column member made of precast concrete is placed on the column beam joint of the horizontal member.
In the column base part joining step, first, a column base part joining member accommodated in a column beam joint part of an upper pillar member or a horizontal member is pulled out. Next, the column leg joint formed on the column beam joint or the upper column member of the horizontal member and pulled out from the column beam joint of the upper column member or the horizontal member is formed in the second insertion portion consisting of a hole or a space. Insert a member. And thereby, the column beam joint of the horizontal member and the upper column member are joined.
Therefore, the same operation and effect as in claim 1 can be obtained.

  The invention according to claim 8 projects upward from the column beam joint portion of the lower horizontal member made of precast concrete constituted by the column beam joint portion and the beam portion integrated with the column beam joint portion. Is inserted into a through hole formed in a column member made of precast concrete so that the column reinforcement does not protrude from the upper surface of the column member, and the column member is inserted into the column beam of the lower horizontal member. The column member installation process of the upper horizontal member made of precast concrete composed of the column member installation process to be placed on the joint portion, the column beam joint portion and the beam portion integrated with the column beam joint portion An upper horizontal member installation step for placing on the column member, and a column beam joint portion of the upper horizontal member or a column head joint member accommodated in the column member, or a column beam joint portion of the upper horizontal member or Pulled out from the column member, the column member or the upper horizontal member Inserted into an insertion part formed of a hole or space formed in a column beam joint, and the column beam joint of the lower horizontal member and the column beam joint of the upper horizontal member are joined via the column member And a column head joining step.

  In invention of Claim 8, it has a pillar member installation process, an upper horizontal member installation process, and a pillar head joining process.

In the column member installation step, the column member made of precast concrete is placed on the lower horizontal member made of precast concrete. The lower horizontal member is constituted by a column beam joint and a beam unit integrated with the column beam joint, and the column member is placed on the column beam joint of the lower horizontal member. A through hole is formed in the column member. Moreover, the column reinforcement is provided so that it may protrude upward from the column beam joint part of a lower horizontal member. When the column member is placed on the column beam joint of the lower horizontal member, the column reinforcement provided so as to protrude upward from the column beam joint of the lower horizontal member is from the upper surface of the column member. It is inserted into a through hole formed in the column member so as not to protrude.
In the upper horizontal member installation step, the column beam joint of the upper horizontal member made of precast concrete is placed on the column member. The upper horizontal member includes a column beam joint and a beam unit integrated with the column beam joint, and the column beam joint of the upper horizontal member is placed on the column member.
In the column head joining step, first, the column head joining member housed in the column beam joint of the upper horizontal member or the column member is pulled out. Next, the column head joint member drawn out from the column beam joint or column member of the upper horizontal member is inserted into the insertion portion formed of the hole or space formed in the column beam joint portion of the column member or upper horizontal member. To do. Thus, the column beam joint of the lower horizontal member and the column beam joint of the upper horizontal member are joined via the column member.
Therefore, the same operation and effect as in claim 2 can be obtained.

  The invention according to claim 9 is a column beam of a horizontal member made of precast concrete comprising a column beam joint portion and a beam portion integrated with the column beam joint portion on a lower column member made of precast concrete. A horizontal member installation step for placing the joint portion, and a column reinforcing bar provided so as to protrude downward from the upper column member made of precast concrete are inserted into the through hole formed in the column beam joint portion of the horizontal member. An upper column member installation step of inserting the upper column member on the column beam joint of the horizontal member by inserting the column rebar from the lower surface of the column beam joint of the horizontal member so as not to protrude, and A column head joint member housed in the column beam joint of the horizontal member or the lower column member is pulled out from the column beam joint of the horizontal member or the lower column member, and the lower column member or the horizontal member A hole or space formed in the column beam joint Insert the join the club, is characterized by having a capital portion bonding step of bonding the on the post member and the lower column member through Column Joint portions of the horizontal member.

In invention of Claim 9, it has a horizontal member installation process, an upper pillar member installation process, and a pillar head joining process.
In the horizontal member installation step, a horizontal member made of precast concrete is placed on the lower pillar member made of precast concrete. The horizontal member includes a column beam joint and a beam unit integrated with the column beam joint, and the column beam joint of the horizontal member is placed on the lower column member.
In the upper column member installation step, the upper column member made of precast concrete is placed on the column beam joint of the horizontal member. A through hole is formed in the column beam joint of the horizontal member, and a column reinforcing bar is provided on the upper column member so as to protrude downward. When the upper column member is placed on the column beam joint portion of the horizontal member, the column reinforcement is provided so as to protrude downward from the upper column member from the lower surface of the column beam joint portion of the horizontal member. It is inserted into a through hole formed in the column beam joint of the horizontal member so as not to protrude.
In the column head joining step, first, the column head joining member housed in the column beam joint or the lower column member of the horizontal member is pulled out. Next, the column head joint member pulled out from the column beam joint of the horizontal member or the lower column member is inserted into the insertion portion formed of the hole or space formed in the column beam joint of the lower column member or the horizontal member. To do. And thereby, a lower pillar member and an upper pillar member are joined via the column beam joint part of a horizontal member.
Therefore, the same operation and effect as in the third aspect can be obtained.

  Since the present invention is configured as described above, the upper column member made of precast concrete placed on the horizontal member made of precast concrete constituted by the column beam joint portion and the beam portion can be moved laterally or horizontally. it can.

  A construction method for a precast concrete member joining structure, a building having a precast concrete member joining structure, and a building having a precast concrete member joining structure will be described with reference to the drawings. In addition, this embodiment is a joint structure using a column member made of precast concrete (hereinafter referred to as PCa) and a horizontal member made of PCa composed of a column beam joint and a beam, a building, And can be applied to building construction methods. That is, the present invention can be applied to joining structures using various precast column members such as reinforced concrete, steel reinforced concrete, prestressed concrete, and horizontal members, buildings, and building construction methods.

  First, a first embodiment of the present invention will be described.

  As shown in the perspective view of FIG. 1 and the front view of FIG. 2, the horizontal member 10 made of PCa is projected from the column beam joint portion 12 made of PCa and the left and right side surfaces of the column beam joint portion 12. PCa beam portions 14 and 16 provided in a united manner are integrally formed.

Four beam rebars 18 and 20 are arranged on the upper and lower portions of the horizontal member 10 along the longitudinal direction of the horizontal member 10, respectively. As shown in FIG. 2, the beam reinforcing bars 18 and 20 are arranged so as to protrude from the left end surface of the beam portion 14 and not protrude from the right end surface of the beam portion 16. Further, a hollow tube 22 is embedded in the right end portion of the beam portion 16 so as not to protrude from the right end surface of the beam portion 16, and the right end portions of the beam reinforcing bars 18 and 20 disposed in the beam portion 16 are the hollow tube. 22 is inserted. The hollow tube 22 is a plug-in mechanical joint that can be inserted without screwing the beam reinforcing bars 18 and 20.
The hollow tube 22 may be a screw-in type mechanical joint in which female threads for screwing the beam reinforcing bars 18 and 20 are formed on the inner wall.

  As shown in FIGS. 1 and 2, twelve sheaths are provided at the upper end portion of the column beam joint portion 12 along the outer periphery of the column beam joint portion 12 so as not to protrude from the upper end surface of the column beam joint portion 12. A tube 24 is embedded, thereby forming a hole 26 as a second insertion portion in the column beam joint portion 12 of the horizontal member 10.

As shown in FIG. 2, twelve sheath tubes 28 are provided at the lower end portion of the column beam joint portion 12 along the outer periphery of the column beam joint portion 12 so as not to protrude from the lower end surface of the column beam joint portion 12. Is buried.
The planar arrangement of the sheath tube 24 and the sheath tube 28 is the same. That is, the lower end opening surface of each sheath tube 24 and the upper end opening surface of each sheath tube 28 are arranged to face each other. The connecting column rebar 30 is inserted between the sheath tube 24 and the sheath tube 28 whose opening surfaces face each other, and is arranged so as to connect the sheath tube 24 and the sheath tube 28. The upper end portion of the column reinforcing bar 30 is disposed so as not to protrude from the upper end surface of the column beam joint portion 12, and the lower end portion of the column reinforcing bar 30 is disposed not to protrude from the lower end surface of the column beam joint portion 12. Yes.

  The hole 32 formed by the sheath tube 28 accommodates a hollow tube 34 as a column head joint member. That is, the hollow tube 34 is accommodated in the column beam joint 12 of the horizontal member 10. The hollow tube 34 is a plug-in mechanical joint that can be inserted without screwing the column rebar 30 or the column reinforce 52 described later, and the column rebar 30 is inserted into the hollow tube 34 in the state of FIG. Has been.

  As shown in FIG. 2, a plurality of shear reinforcement bars 36 are disposed in the beam portions 14 and 16 so as to surround the beam reinforcing bars 18 and 20 and the hollow tube 22, and a sheath tube is provided in the column beam joint portion 12. A plurality of shear reinforcement bars 38 are arranged so as to surround 24 and 28 and the column reinforcement 30. The beam reinforcing bars 18 and 20, the hollow pipe 22, the shear reinforcing bar 36, the sheath pipes 24 and 28, the column reinforcing bar 30, and the shear reinforcing bar 38 are integrated by the concrete V that forms the horizontal member 10. Yes.

  Moreover, as shown in FIG. 1, the grout injection hole 40 and the grout discharge hole 42 which are demonstrated later are formed in the side surface of the column beam joint part 12 of the horizontal member 10. As shown in FIG. The grout injection hole 40 is connected to the hole 26, and the grout discharge hole 42 is connected to the hole 32.

  As shown in the perspective view of FIG. 3 and the front view of FIG. 4, the upper end portion of the lower column member 44 made of PCa extends along the outer periphery of the lower column member 44 so as not to protrude from the upper end surface of the lower column member 44. Twelve sheath tubes 46 are embedded, thereby forming a hole 48 as a first insertion portion in the lower column member 44.

As shown in FIG. 4, twelve sheath tubes 50 are embedded in the lower end portion of the lower column member 44 along the outer periphery of the lower column member 44 so as not to protrude from the lower end surface of the lower column member 44.
The planar arrangement of the sheath tube 46 and the sheath tube 50 is the same. That is, the lower end opening surface of each sheath tube 46 and the upper end opening surface of each sheath tube 50 are arranged so as to face each other with a distance therebetween. The connecting column rebar 52 is inserted into the sheath tube 46 and the sheath tube 50 whose opening surfaces face each other, and is arranged so as to connect the sheath tube 46 and the sheath tube 50. The upper end portion of the column reinforcing bar 52 is arranged so as not to protrude from the upper end surface of the lower column member 44, and the lower end portion of the column reinforcing bar 52 is arranged not to protrude from the lower end surface of the lower column member 44.

A hollow tube 56 is accommodated in the hole 54 formed by the sheath tube 50. That is, the hollow tube 56 is accommodated in the lower column member 44. The hollow tube 56 is a plug-in mechanical joint that can be inserted without screwing the column rebars 30 and 52, and the column rebar 52 is inserted into the hollow tube 56 in the state of FIG. 4.
The diameters of the column reinforcing bars 30 and 52 are the same, and the inner and outer diameters of the sheath tubes 24, 28, 46 and 50 are the same. Note that the diameters of the column reinforcing bars 30 and the column reinforcing bars 52 and the inner and outer diameters of the sheath tube 24 and the sheath tube 50 and the sheath tube 28 and the sheath tube 46 may not be the same. When the diameters of the column reinforcing bars 30 and the column reinforcing bars 52 are different, a hollow tube that can connect column reinforcing bars having different diameters may be used.

As shown in FIG. 4, a plurality of shear reinforcement bars 58 are arranged on the lower column member 44 so as to surround the sheath tubes 46, 50 and the column reinforcement 52, and are integrated by the concrete V forming the lower column member 44. ing.
Further, as shown in FIG. 3, a grout injection hole 60 and a grout discharge hole 62 described later are formed on the side surface of the lower column member 44. The grout injection hole 60 is connected to the lower part of the hole 48, and the grout discharge hole 62 is connected to the upper part of the hole 54.

  Since the upper column member 64 placed on the horizontal member 10 has the same configuration as the lower column member 44, description thereof is omitted. In the upper column member 64, the hollow tube 56 serves as a column base member that is accommodated in the upper column member 64.

  Next, the operation and effect of the first embodiment of the present invention will be described.

  A building having a precast concrete member joining structure 76 composed of the lower pillar member 44, the horizontal member 10, and the upper pillar member 64 is constructed by the construction method shown in FIG. For convenience of explanation, the lower column member 44 installed on the left side of the floor slab 66 is a lower column member 44A, and the lower column member 44 installed substantially in the center of the floor slab 66 is a lower column member 44B. The lower column member 44 installed on the right side of 66 is referred to as a lower column member 44C. Further, the horizontal member 10 placed on the lower pillar members 44A to 44C is defined as horizontal members 10A to 10C, and the upper pillar member 64 placed on the horizontal members 10A to C is designated as upper pillar members 64A to 64C.

  First, as shown in FIG. 5A, a lower column member 44A is installed on the left side on the floor slab 66 on the first floor of the building. As in the upper part of the column beam joint 12 in FIG. 2, a sheath tube 24 and a column reinforcing bar 30 are arranged at the upper part of the floor slab 66, and the column beam joint 12 of the horizontal member 10, which will be described later, The floor slab 66 and the lower pillar member 44A are joined by the same method as that for joining the upper pillar member 64.

  Next, the column beam joint portion 12 of the horizontal member 10A is placed on the lower column member 44A (horizontal member installation step). As shown in FIG. 6, female screws 68 are formed at the four corners of the upper end surface of the lower column member 44, and the installation height of the column beam joint portion 12 is determined by the screwed amount of the bolt 70 screwed into the female screw 68. Adjust the height. The bolts 70 are also provided at the four corners of the upper end surface of the column beam joint portion 12 of the horizontal member 10 and the upper column member 64, whereby the column beam joint portion 12 and the upper column of the horizontal member 10 are provided. The installation height of the member placed on the member 64 is adjusted.

  Next, as shown in FIG. 5B, the lower column member 44A and the column beam joint 12 of the horizontal member 10A are joined (column head joining step). As shown in FIGS. 7A and 7B, the joining method is such that the hollow tube 34 housed in the column beam joint 12 of the horizontal member 10 is lowered by its own weight, Pull out and insert into hole 48. At this time, the end portion of the column reinforcing bar 52 provided in the lower column member 44 is inserted into the hollow tube 34. 7A shows a state before the lower column member 44 and the column beam joint portion 12 of the horizontal member 10 are joined, and FIG. 7B shows a column beam of the lower column member 44 and the horizontal member 10. The state which joined the joint part 12 is shown.

  As shown in FIG. 8A, in the state of FIG. 7A before the lower column member 44 and the column beam joint 12 of the horizontal member 10 are joined, the column beam of the horizontal member 10 is separated by the string 72. The side surface of the column beam joint portion 12 of the horizontal member 10 and the upper end portion of the hollow tube 34 are connected via a grout discharge hole 42 formed substantially horizontally in the joint portion 12, and the hollow tube 34 is connected to the hole 32. It is suspended from above. At this time, the lower end portion of the hollow tube 34 is accommodated in the hole 32 so as not to protrude from the lower end surface of the column beam joint portion 12 of the horizontal member 10.

  Therefore, when the column beam joint portion 12 of the horizontal member 10 is placed on the lower column member 44, the hollow tube 34 is accommodated in the column beam joint portion 12 of the horizontal member 10, and the horizontal member 10 It does not protrude from the column beam joint 12. Thereby, the column beam joint portion 12 of the horizontal member 10 placed on the lower column member 44 can be moved in the horizontal direction or in the horizontal direction. That is, after the column beam joint 12 of the horizontal member 10 is placed on the lower column member 44, the position of the horizontal member 10 can be adjusted.

As shown in FIG. 8 (B), the end of the string 72 is unfixed to the side surface of the column beam joint 12 in the state of FIG. 8 (A) or the string 72 is cut. 34 descends by its own weight and is inserted into the hole 48, and the end of the column reinforcing bar 52 provided in the lower column member 44 is inserted into the hollow tube 34. As a result, the lower column member 44 and the column beam joint 12 of the horizontal member 10 are joined.
Therefore, the column rebar 52 and the column rebar 30 provided in the lower column member 44 to be joined and the column beam joint portion 12 of the horizontal member 10 can be reliably connected by the hollow tube 34.

  After the end of the column reinforcing bar 52 provided in the lower column member 44 is inserted into the hollow tube 34 accommodated in the hole 48, as shown in FIG. The outer peripheral portion of the gap space S formed between the end surface and the upper end surface of the lower column member 44 is closed with an air hose 74, a mold, or the like. Further, the hardening material W is injected from the grout injection hole 60 formed substantially horizontally in the lower column member 44, and the excess hardening material W is discharged from the grout discharge hole 42, so that the inside of the holes 48, 32 and the hollow tube 34 are discharged. The inside and the gap space S are filled with the curing material W. Then, the filled curing material W is cured to fix the end portions of the column reinforcing bars 52 and 30 to the hollow tube 34.

Next, as shown in FIG. 5B, the horizontal member 10B placed on the lower column member 44B installed at the approximate center of the floor slab 66 is moved horizontally to the left, and the beam portion of the horizontal member 10B. 14 are inserted into a hollow tube 22 provided at the right end of the beam 16 of the horizontal member 10A.
At this time, the hollow tube 34 provided at the lower end of the column beam joint portion 12 of the moving horizontal member 10B is accommodated in the column beam joint portion 12 of the horizontal member 10B, and the column of the horizontal member 10B. It does not protrude from the beam joint 12. Thereby, the horizontal member 10B can be moved horizontally or horizontally to join the beam portion 16 of the horizontal member 10A and the beam portion 14 of the horizontal member 10B.
The beam part (horizontal member) is laterally moved or horizontally moved so that the beam parts are joined to each other. The end faces of the beam parts are brought into close contact with each other or the gap formed between the end faces of the beam parts. Can be reduced.
That is, it is possible to eliminate the work of post-molding the concrete by providing a formwork at the joint between the beam portions, and the workability can be improved.

Next, after the position adjustment of the horizontal member 10B is completed, the column beam of the lower column member 44B and the horizontal member 10B is the same as the method of joining the lower column member 44A and the column beam joint portion 12 of the horizontal member 10A. The joint portion 12 is joined. Then, a hardening material is filled in the gap between the hollow tube 22 provided at the right end portion of the beam portion 16 of the horizontal member 10A and the beam reinforcing bars 18 and 20 inserted into the hollow tube 22 to be hardened. The beam reinforcing bars 18 and 20 are fixed to the tube 22. Thereby, the horizontal member 10A and the horizontal member 10B are joined.
Then, the work of FIG. 5B (installation of the horizontal member on the lower pillar member, joining of the lower pillar member and the horizontal member, and joining of the horizontal members arranged next to each other) is repeated, Build one more part.

Next, as shown in FIG.5 (C), upper pillar member 64A-C is each mounted on the column beam joint part 12 of horizontal member 10A-C (upper pillar member installation process).
Next, the column beam joint portion 12 of the horizontal members 10A to 10C and the upper column members 64A to 64C are joined (column leg joining step). As shown in FIGS. 9A and 9B, the joining method is such that the hollow tube 56 accommodated in the hole 54 of the upper column member 64 is lowered by its own weight and pulled out from the hole 54 of the upper column member 64. Insert into hole 26. At this time, the end of the column reinforcing bar 30 provided in the column beam joint 12 of the horizontal member 10 is inserted into the hollow tube 56. FIG. 9A shows a state before the column beam joint 12 of the horizontal member 10 and the upper column member 64 are joined, and FIG. 9B shows the state of the column beam joint 12 of the horizontal member 10. The state which joined the upper pillar member 64 is shown. A method for lowering the hollow tube 56 and a method for fixing the column reinforcing bars 30 and 52 to the hollow tube 56 are the same as those shown in FIGS. In the case of FIG. 9B, the hardening material W is injected from the grout injection hole 40 formed in the column beam joint portion 12 of the horizontal member 10, and the excess hardening material W is formed in the upper column member 64. Discharge from the grout discharge hole 62.

  Therefore, when the upper column member 64 is placed on the column beam joint 12 of the horizontal member 10, the hollow tube 56 as the column base member is accommodated in the hole 54 of the upper column member 64, It does not protrude from the upper column member 64. Thereby, the upper column member 64 placed on the column beam joint 12 of the horizontal member 10 can be moved in the horizontal direction or in the horizontal direction. That is, after the upper column member 64 is placed on the column beam joint 12 of the horizontal member 10, the position of the upper column member 64 can be adjusted in order to improve the construction accuracy.

  After that, by repeating the same operations as in FIGS. 5A to 5C, the lower column member 44 and the column beam joint 12 of the horizontal member 10 are joined, and the column beam joint of the horizontal member 10 is joined. The building structure is constructed by stacking the joint structure 76 of the precast concrete member joining the 12 and the upper column member 64 to the rooftop.

  In 1st Embodiment, although the construction method which installs the horizontal member 10 and the upper pillar member 64 on the lower pillar member 44 installed in the floor slab 66 of the 1st floor of a building was shown, the lower pillar installed in the other floor The same construction method may be used when the horizontal member 10 and the upper column member 64 are installed on the member 44. For example, when the next horizontal member 10 is placed on the upper column member 64 placed on the horizontal member 10 in FIG. 5C, it is placed on the horizontal member 10 in FIG. The upper column member 64 thus formed may be considered as the lower column member 44 in FIG. Further, the construction of the floor slabs of the second and higher floors may be performed before the upper column member 64 is placed on the column beam joint portion 12 of the horizontal member 10, or the lower column member 44 and the upper column member 64 You may carry out after joining.

In the first embodiment, one of the two horizontal members 10 arranged adjacent to each other is horizontally moved or horizontally moved, and the beam reinforcing bar 18 protruding from the beam portion 14 of the horizontally moved or horizontally moved horizontal member 10; 20 is inserted into the hollow tube 22 provided in the beam portion 16 of the other horizontal member 10 to join the beam portion 14 of one horizontal member 10 and the beam portion 16 of the other horizontal member 10 together. However, any method may be used as long as it is a method of joining the beam portions of the horizontal member that can secure the necessary joint strength in terms of structure.
For example, the beam portions may be joined by a conventional joining method as shown in FIG. In this joining method, first, as shown in FIG. 10A, horizontal members 78A and 78C are placed on the lower pillar members 44A and 44C. Beam reinforcing bars 84 and 86 protrude from end portions of the beam portions 80 and 82 provided on the left and right of the column beam joint portions 94 of the horizontal members 78A and 78C.

  Next, as shown in FIG. 10B, the lower column members 44A and 44C and the horizontal members 78A and 78C are joined together in the same manner as shown in FIG. 7, and then the horizontal member 78B is moved downward from above. To be placed on the lower column member 44B.

  Next, as shown in FIG. 10C, after joining the lower column member 44B and the horizontal member 78B in the same manner as shown in FIG. 7, from the end of the beam portion 82 of the horizontal member 78A. Beam rebars 84, 86 projecting from the end of the beam portion 80 of the horizontal member 78B, and beam rebars 84, 86 projecting from the end of the beam portion 82 of the horizontal member 78B and the horizontal member 78C. Beam rebars 84 and 86 protruding from the end of the beam 80 are joined by a mechanical joint 88.

  Next, the mechanical joint 88 and the beam reinforcing bars 84 and 86 are fixed with a hardening material, the joint portion 90 between the beam portion 82 of the horizontal member 78A and the beam portion 80 of the horizontal member 78B, and the beam portion 82 of the horizontal member 78B. A concrete frame is provided in a joint portion 92 between the horizontal member 78C and the beam portion 80 of the horizontal member 78C, and concrete V is placed therein. For this mold, a PCa mold that is integrated with the beam and covers the side and bottom surfaces of the joint may be used.

  As described above, the precast concrete member joining structure 76 according to the first embodiment is a method for joining various beam portions in which the horizontal members are moved in the vertical direction, the horizontal direction, or the horizontal direction to join the beam portions of the horizontal members. Can be used in combination. The precast concrete member joining structure 76 according to the first embodiment is capable of lateral movement or horizontal movement when the horizontal member is placed on the lower pillar member and after the horizontal member is placed on the lower pillar member. Therefore, this is particularly effective when the horizontal members are moved laterally or horizontally to join the beam portions of the horizontal members.

  Further, in the first embodiment, the hollow tube 34 as the column head joint member is accommodated in the hole 32 of the column beam joint portion 12 of the horizontal member 10, and downward from the hole 32 of the column beam joint portion 12. Although an example in which the hollow tube 34 is pulled out and inserted into the hole 48 as the first insertion portion formed in the lower column member 44 has been shown, the hole 96 formed in the lower column member 44 is shown in FIG. The hollow tube 34 serving as a column head joint member is accommodated in the first column, and the hollow tube 34 is drawn upward from the hole 96 of the lower column member 44 so as to be formed in the column beam joint portion 12 of the horizontal member 10. You may make it insert in the hole 98 as an insertion part. In this case, the other end of the string 100, one end of which is fixed to the side surface of the lower column member 44, is fixed to the lower end of the hollow tube 34, and the string 100 is pulled upward to pull the hollow tube 34 upward. (See FIG. 11B). If the hollow tube 34 is accommodated in the column beam joint 12 of the horizontal member 10, when the horizontal member 10 is stored outdoors, rainwater or the like does not collect in the holes 32, so that the hollow tube 34 rusts. Is preferable.

  Further, a hollow tube 56 as a column base member is accommodated in the hole 54 formed in the upper column member 64, and the hollow tube 56 is drawn downward from the hole 54 of the upper column member 64, so that the horizontal member 10. Although the example which inserts in the hole 26 as a 2nd insertion part formed in the column beam joint part 12 of this was shown, the column beam of the horizontal member 10 is shown similarly to the case of the hollow tube 34 as a column head joining member. A hollow tube 56 as a column base joint member is accommodated in a hole formed in the joint portion 12, and the hollow tube 56 is drawn upward from the hole of the column beam joint portion 12 to form an upper column member 64. You may make it insert in the hole as a formed 2nd insertion part. The method of pulling upward the hollow tube 56 is the same as that of the hollow tube 34 in FIG. If the hollow tube 56 is accommodated in the hole 54 of the upper column member 64, when the upper column member 64 is stored outdoors, rainwater or the like does not collect in the hole 54, thereby preventing the hollow tube 56 from rusting. This is preferable.

  In addition, although the example in which the hole 48 of the first insertion portion and the hole 26 of the second insertion portion are formed by the embedded sheath tubes 46 and 24 is shown, a hole into which the hollow tubes 34 and 56 can be inserted is formed. What is necessary is just to embed pipe materials other than a sheath tube. Alternatively, a hole may be formed by arranging a cylindrical member at a position where the hole is to be formed and taking out the cylindrical member after the concrete has hardened. Moreover, you may form a hole by perforation.

  Moreover, the 1st insertion part and the 2nd insertion part should just be able to insert the hollow tubes 34 and 56, and may be the space P which accommodates a some hollow tube. For example, a space P as shown in FIG. 12B, which is a front view of FIG. 12A and a cross-sectional view taken along the line AA of FIG. A hand may be inserted through the opening 102. As described above, when the first insertion portion and the second insertion portion are made into the space P, the screw head type mechanical joint in which the female screw for screwing the column reinforcement into the inner wall of the hollow tube is formed as the column head joint member. Even when used as a column base joint member, the operation of screwing the screw-in type mechanical joint into the column rebar can be performed through the opening 102.

  Moreover, although the column head joining member and the column base joining member are hollow tubes, they may be rods arranged so as to overlap in the longitudinal direction with respect to the column reinforcing bars provided in each member to be joined. For example, as shown in FIG. 13B which is a front view of FIG. 13A and a BB cross-sectional view of FIG. 13A, the column beam joint 12 and the upper column member 64 of the horizontal member 10. Are joined, the hollow tube 106 is embedded between the adjacent column reinforcing bars 52 provided in the upper column member 64, and the adjacent column reinforcing bars provided in the column beam joint portion 12 of the horizontal member 10. The hollow tube 108 is buried between 30.

  The hollow tube 108 is embedded so as not to protrude from the lower end surface of the upper column member 64, and the hollow tube 108 is not protruded from the upper end surface of the column beam joint 12 of the horizontal member 10. Further, a reinforcing bar 114 embedded in the upper column member 64 is inserted into the hollow tube 106, and a reinforcing bar 116 embedded in the column beam joint portion 12 of the horizontal member 10 is inserted into the hollow tube 108. Has been.

Then, the reinforcing bar 104 as a bar inserted in the hollow tube 106 and accommodated in the upper column member 64 is drawn downward and inserted into the hollow tube 108 as the second insertion portion. Further, the reinforcing bar 104 is fixed to the hollow tubes 106 and 108 with a hardening material, thereby joining the column beam joint 12 of the horizontal member 10 and the upper column member 64.
Accordingly, the joining member can be arranged without being greatly restricted by the arrangement and number of column reinforcing bars provided in each member.

  In the state shown in FIG. 13A in which the column beam joint 12 of the horizontal member 10 and the upper column member 64 are joined, the length of the reinforcing bar 104 and the length of the reinforcing bar 114 and the column reinforcing bar 52 overlapped is set to the column reinforcing bar 52, The lengths of the reinforcing bar 104 and the reinforcing bar 104 are set to be 40 times or more of the smallest diameter of the reinforcing bars 104 and 114, and the length of the reinforcing bar 104 and the reinforcing bar 116 and the column reinforcing bar 30 is overlapped. In order to ensure sufficient bonding strength, it is preferable that the diameter be about 40 times the smallest diameter.

  Further, when the number of the reinforcing bars 104, 114, 116 is smaller than that of the column reinforcing bars 52, 30, it is preferable to increase the diameter of the reinforcing bars 104, 114, 116 in order to secure sufficient joint strength. .

  Moreover, the joining method of the floor slab 66 and the lower pillar member 44 should just be a method which can ensure the joint strength required on a structure, and the joining method of the column beam joint part 12 of the horizontal member 10 and the upper pillar member 64 is sufficient. It may not be the same. For example, the column reinforcement is protruded upward from the floor slab 66, and the lower column member 44 is placed on the floor slab 66 and is protruded from the floor slab 66 into the insertion hole formed in the lower portion of the lower column member 44. Column reinforcement may be inserted and fixed. Further, the column reinforcing bar protrudes downward from the lower column member 44, the lower column member 44 is placed on the floor slab 66, and the column protruded from the lower column member 44 into the insertion hole formed in the floor slab 66. Reinforcing bars may be inserted and fixed.

  Next, a second embodiment of the present invention will be described.

In the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and are appropriately omitted.
As shown in the perspective view of FIG. 14 and the front view of FIG. 15, the lower horizontal member 118 made of PCa is projected from the column beam joint portion 120 made of PCa and the left and right side surfaces of the column beam joint portion 120. The beam portions 14 and 16 made of PCa provided in this manner are integrally formed.

  Twelve column reinforcing bars 122 projecting upward from the column beam joint 120 of the lower horizontal member 118 are provided in the column beam joint 120 along the outer periphery of the column beam joint 120. In addition, twelve sheath tubes 28 are embedded along the outer periphery of the column beam joint portion 120 at the lower end portion of the column beam joint portion 120 so as not to protrude from the lower end surface of the column beam joint portion 120. .

  The planar arrangement of the column reinforcing bars 122 and the sheath tube 28 is the same. The column rebar 122 is inserted into each sheath tube 28. The column reinforcement 122 is arranged so that the lower end portion of the column reinforcement 122 does not protrude from the lower end surface of the column beam joint portion 120.

A hollow tube 34 is accommodated in the hole 32 formed by the sheath tube 28. That is, the hollow tube 34 is accommodated in the column beam joint 120 of the horizontal member 118. The hollow tube 34 is a plug-in mechanical joint that can be inserted without screwing the column rebar 122. In the state of FIG. 15, the column rebar 122 is inserted into the hollow tube 34.
Further, as shown in FIG. 14, a grout discharge hole 124 described later is formed on the side surface of the column beam joint portion 120 of the lower horizontal member 118. The grout discharge hole 124 is connected to the upper part of the hole 32.

  As shown in the perspective view of FIG. 16 and the front view of FIG. 17, 12 sheath tubes 128 are provided on the column member 126 made of PCa so as not to protrude from the upper end surface and the lower end surface of the column member 126. As a result, a through hole 130 is formed along the longitudinal direction of the column member 126. The upper portion of the through hole 130 becomes an insertion portion as a hole formed in the column member 126.

  The planar arrangement of the sheath tube 128 provided on the column member 126 and the column rebar 122 provided on the lower horizontal member 118 is the same. Therefore, when the column member 126 is placed on the column beam joint 120 of the lower horizontal member 118, all the column rebars 122 are inserted into the holes 130 formed by the sheath tube 128. Further, the protruding length of the column reinforcing bar 122 is such a length that the end of the column reinforcing bar 122 does not protrude from the upper surface of the column member 126 when the column member 126 is placed on the column beam joint 120 of the lower horizontal member 118. It has become.

As shown in FIG. 17, a plurality of shear reinforcement bars 58 are arranged on the column member 126 so as to surround the sheath tube 128, and the sheath tube 128 and the shear reinforcement bar 58 are integrated by the concrete V forming the column member 126. ing.
For convenience of explanation, the column reinforcing bars provided in the column member 126 are omitted, but a plurality of column reinforcing bars are provided so as to be surrounded by the shear reinforcing bars 58.
In addition, as shown in FIG. 16, grout injection holes 134 and 136 and a grout discharge hole 140 which will be described later are formed on the side surface of the column member 126. The grout injection holes 134 and 136 and the grout discharge hole 140 are connected to the through hole 130.

Since the upper horizontal member 142 placed on the column member 126 has the same configuration as the lower horizontal member 118, description thereof is omitted. In the upper horizontal member 142, the hollow tube 34 is a column head joint member accommodated in the column beam joint of the upper horizontal member 142.
Note that the column reinforcing bar 122 of the lower horizontal member 118 and the column reinforcing bar 122 of the upper horizontal member 142 may have different diameters. In such a case, a hollow tube that can connect column reinforcing bars having different diameters may be used.

  Next, the operation and effect of the second embodiment of the present invention will be described.

  A building having a precast concrete member joining structure 144 composed of a lower horizontal member 118, a column member 126, and an upper horizontal member 142 is constructed by a construction method shown in FIGS. For convenience of explanation, the column member 126 installed on the left side of the floor slab 66 is a column member 126A, the column member 126 installed in the approximate center of the floor slab 66 is a column member 126B, and on the right side of the floor slab 66. The installed column member 126 is referred to as a column member 126C. Further, the lower horizontal member 118 placed on the pillar members 126A to 126C is defined as lower horizontal members 118A to C, the pillar member 126 placed on the lower horizontal members 118A to 118C is designated as 126A to C, and the column member 126A. The upper horizontal column member 142 placed on the -C is referred to as 142A-C.

  First, as shown in FIG. 18A, a column member 126A is installed on the left side of the floor slab 66 on the first floor of the building. Similarly to the column reinforcement 122 provided at the column beam joint 120 of the lower horizontal member 118 in FIG. 15, the floor slab 66 is provided with a column reinforcement 122 protruding upward from the upper surface of the floor slab 66. When the column member 126 </ b> A is placed on the slab 66, the column reinforcement 122 is inserted into the through hole 130 of the column member 126. Then, the floor slab 66 and the lower horizontal member 118 are joined by the same method as the joining method of the column beam joint 120 of the lower horizontal member 118 and the column beam joint 120 of the upper horizontal member 142 described later. Do.

Next, the column beam joint portion 120 of the lower horizontal member 118A is placed on the column member 126A.
Next, as shown in FIG. 18B, the column member 126A and the column beam joint 120 of the lower horizontal member 118A are joined. As shown in FIGS. 20 (A) and 20 (B), the joining method is such that the hollow tube 34 accommodated in the hole 32 of the column beam joint 120 of the lower horizontal member 118 is lowered by its own weight, so It is pulled out from the hole 32 of the mouth part 120 and inserted into the upper part of the through hole 130. At this time, the end portion of the column reinforcement 122 inserted into the through hole 130 of the column member 126 is inserted into the hollow tube 34.

  20A shows a state before the column member 126 and the column beam joint 120 of the lower horizontal member 118 are joined, and FIG. 20B shows the column beam of the column member 126 and the lower horizontal member 118. The state which joined the joint part 120 is shown. The method for lowering the hollow tube 34 and the method for fixing the column reinforcing bars 122 to the hollow tube 34 are the same as those shown in FIGS. The fixing material W for fixing is injected from the grout injection hole 134 of the column member 126, and the excess hardening material W is discharged from the grout discharge hole 124 of the lower horizontal member 118. The position of FIG. 20 (B) which joins the column rebar 122 provided in the column member 126 and the column rebar 122 provided in the column beam joint 120 of the lower horizontal member 118 to the hollow tube 34 lowered by its own weight. 20A, the through hole 130 is filled with a curing material W and cured as shown in FIG. 20A. In this case, the hardening material W is injected from the grout injection hole 136 formed on the side surface of the column member 126, and the excess hardening material W is discharged from the grout discharge hole 140 formed on the side surface of the column member 126.

  Next, as shown in FIG. 18B, the lower horizontal member 118B placed on the column member 126B installed at the approximate center of the floor slab 66 is moved horizontally to the left, and the beam of the lower horizontal member 118B. The beam reinforcing bars 18 and 20 protruding from the left end surface of the portion 14 are inserted into the hollow tube 22 provided at the right end portion of the beam portion 16 of the lower horizontal member 118A.

Next, after the position adjustment of the lower horizontal member 118B is completed, the column member 126B and the lower horizontal member 118B are joined by the same method as the joining method of the column member 126A and the lower horizontal member 118A. Then, the gap between the hollow tube 22 provided at the right end of the beam portion 16 of the lower horizontal member 118A and the beam reinforcing bars 18 and 20 inserted into the hollow tube 22 is filled with a hardening material and cured, The beam reinforcing bars 18 and 20 are fixed to the empty pipe 22. As a result, the beam portion 16 of the lower horizontal member 118A and the beam portion 14 of the lower horizontal member 118B are joined.
18 (A) and 18 (B) (installation of the lower horizontal member on the pillar member, joining of the pillar member and the lower horizontal member, and joining of the lower horizontal members arranged adjacent to each other). Repeat to build one part of the building.

Next, as illustrated in FIG. 19C, the column members 126 </ b> A to 126 </ b> C are placed on the column beam joints 120 of the lower horizontal members 118 </ b> A to 118 </ b> C (column member installation step).
Next, as shown in FIG. 19D, the upper horizontal member 142A is placed on the column member 126A placed on the lower horizontal member 118A (upper horizontal member installation step).

  Next, the column beam joint 120 of the lower horizontal member 118A and the column beam joint 120 of the upper horizontal member 142A are joined (column head joining step). As shown in FIGS. 20 (A) and 20 (B), the joining method is such that the hollow tube 34 accommodated in the hole 32 of the column beam joint 120 of the upper horizontal member 142 is lowered by its own weight, so It is pulled out from the hole 32 of the mouth 120 and inserted into the upper part of the through hole 130. At this time, the end portion of the column reinforcing bar 122 inserted into the through hole 130 of the column member 126 is inserted into the hollow tube 34, and the column beam joint 120 of the lower column horizontal member 118 and the upper horizontal column via the column member 126. The column beam joint 120 of the member 142 is joined. The method for lowering the hollow tube 34 and the method for fixing the column reinforcing bars 122 to the hollow tube 34 are the same as those shown in FIGS.

  19D (installation of the upper horizontal member on the pillar member, joining of the lower horizontal member and the upper horizontal member via the pillar member, and joining of the upper horizontal members arranged adjacent to each other) ) To build the second layer of the building. The method for joining the upper horizontal members is the same as the method for joining the lower horizontal members.

Here, one of the two upper horizontal members 142 arranged adjacent to each other is laterally moved or horizontally moved, and the beam reinforcing bars 18 and 20 projecting from the beam portion 14 of the horizontally moved or horizontally moved upper horizontal member 142 are moved to the other. When joining the beam portion 14 of one upper horizontal member 142 and the beam portion 16 of the other upper horizontal member 142 by inserting into the hollow tube 22 provided in the beam portion 16 of the upper horizontal member 142, The hollow tube 34 as a part joining member is accommodated in the hole 32 of the column beam joint 120 of the upper horizontal member 142 and does not protrude from the column beam joint 120 of the upper horizontal member 142. Accordingly, one of the two upper horizontal members 142 arranged adjacent to each other is moved in the horizontal direction or horizontally, and the beam portion 14 of the one upper horizontal member 142 and the beam portion 16 of the other upper horizontal member 142 are moved. Can be joined.
Such a method in which the beam portions (upper horizontal members) are laterally moved or horizontally moved to join the beam portions, the end surfaces of the beam portions are brought into close contact with each other or formed between the end surfaces of the beam portions. The gap can be reduced.
That is, it is possible to eliminate the work of post-molding the concrete by providing a formwork at the joint between the beam portions, and the workability can be improved.

  Further, when the column beam joint 120 of the upper horizontal member 142 is placed on the column member 126, the hollow tube 34 as the column head joint member is connected to the hole 32 of the column beam joint 120 of the upper horizontal member 142. And does not protrude from the column beam joint 120 of the upper horizontal member 142. Thus, when the next column member 126 is placed on the column beam joint 120 of the upper horizontal member 142 in the same manner as the column member 126 is placed on the lower horizontal member 118, the upper horizontal The column member 126 placed on the column beam joint 120 of the member 142 can be moved laterally or horizontally together with the column beam joint 120 of the upper horizontal member 142. That is, after the next column member 126 is placed on the column beam joint portion 120 of the upper horizontal member 142, it is placed on the column beam joint portion 120 of the upper horizontal member 142 in order to improve the construction accuracy. The position of the placed column member 126 can be adjusted.

  Thereafter, by repeating the same operations as in FIGS. 18A to 19D, the precast concrete member joining structure 144 for joining the lower horizontal member 118 and the upper horizontal member 142 via the column member 126 is obtained. Stack up to the rooftop floor to build the building.

  In the second embodiment, the construction method in which the lower horizontal member 118, the column member 126, and the upper horizontal member 142 are installed on the column member 126 installed on the floor slab 66 on the first floor of the building is shown. Even when the lower horizontal member 118, the column member 126, and the upper horizontal member 142 are installed on the installed column member 126, the same construction method may be used. For example, when the next pillar member 126 is placed on the upper horizontal member 142 in FIG. 19D, the lower horizontal members 118A to 118C placed on the pillar members 126A to C in FIG. 18A. Is replaced with the upper column members 142A to 142C in FIG. The construction of the floor slabs of the second and higher floors may be performed before the column member 126 is placed on the lower horizontal member 118 or after the lower horizontal member 118 and the upper horizontal member 142 are joined. Good.

  In the second embodiment, one of the two upper horizontal members 142 arranged adjacent to each other is laterally moved or horizontally moved, and the beam reinforcing bar protrudes from the beam portion 14 of the upper horizontal member 142 that has been laterally moved or horizontally moved. 18 and 20 are inserted into the hollow tube 22 provided in the beam portion 16 of the other upper horizontal member 142, whereby the beam portion 14 of one upper horizontal member 142 and the beam portion 16 of the other upper horizontal member 142 are inserted. However, any method may be used as long as it is a method of joining the beam portions of the upper horizontal member that can secure the necessary joint strength in terms of structure. For example, similarly to the first embodiment, the beam portions may be joined by a conventional joining method as shown in FIG.

  As described above, the joint structure 144 of the precast concrete member according to the second embodiment has various beam portions that join the beam portions of the upper horizontal member by moving the upper horizontal member in the vertical direction, the horizontal direction, or the horizontal direction. It can be used in combination with the joining method. The precast concrete member joining structure 144 according to the second embodiment is capable of lateral movement or horizontal movement when the upper horizontal member is placed on the pillar member and after the upper horizontal member is placed on the pillar member. Therefore, it is particularly effective when the upper horizontal member is moved horizontally or horizontally to join the beam portions of the upper horizontal member.

  Further, a hollow tube 34 as a column head joint member is accommodated in the hole 32 of the column beam joint 120 of the upper horizontal member 142, and the hollow tube 34 is drawn downward from the hole 32 of the column beam joint 120. In this example, the hollow tube 34 serving as a column head joint member is accommodated in the upper portion of the through hole 130 formed in the column member 126. The hollow tube 34 may be drawn upward from the upper portion of the through hole 130 and inserted into the hole 32 formed in the column beam joint 120 of the upper horizontal member 142. In this case, the hole 32 becomes an insertion part. If the hollow tube 34 is accommodated in the hole 32 of the column beam joint portion 120 of the upper horizontal member 142, when the upper horizontal member 142 is stored outdoors, the rainwater can enter the hole 32 of the column beam joint portion 120. It is preferable because the hollow tube 34 can be prevented from being rusted.

  Moreover, although the example which formed the through-hole 130 of the column member 126 by the sheath tube 128 embedded was shown, while the column rebar 122 can be inserted, the hole which can insert the hollow tube 34 is formed in the upper part used as an insertion part. What is necessary is just to embed pipe materials other than a sheath tube. Moreover, you may form a hole by perforation.

  Further, the example in which the hole 32 of the lower horizontal member 118 and the upper horizontal member 142 is formed by the embedded sheath tube 28 has been shown, but it is only necessary that a hole for accommodating the hollow tube 34 is formed. The tube material may be embedded. Alternatively, a hole may be formed by arranging a cylindrical member at a position where the hole is to be formed and taking out the cylindrical member after the concrete has hardened. Moreover, you may form a hole by perforation.

Moreover, the insertion part of the column member 126 should just be able to insert the hollow tube 34, and may be the space P which accommodates a some hollow tube similarly to having shown in FIG.
Moreover, although the column head joining member is a hollow tube, as shown in FIG. 13, as a bar material arranged to overlap in the longitudinal direction with respect to the column reinforcing bars provided in each member to be joined. Good.
Moreover, the joining method of the floor slab 66 and the column member 126 should just be a method which can ensure the joining strength required on a structure.

  Next, a third embodiment of the present invention will be described.

In the description of the third embodiment, components having the same configurations as those of the first embodiment are denoted by the same reference numerals, and are appropriately omitted.
As shown in the perspective view of FIG. 21 and the front view of FIG. 22, the horizontal member 146 made of PCa is projected from the column beam joint portion 148 made of PCa and the left and right side surfaces of the column beam joint portion 148. PCa beam portions 14 and 16 provided in a united manner are integrally formed.

  Twelve sheath tubes 150 are embedded in the column beam joint 148 of the horizontal member 146 along the outer periphery of the column beam joint 12 so as not to protrude from the upper end surface and the lower end surface of the column beam joint 148. Thus, a through hole 152 is formed in the column beam joint 148 of the horizontal member 146. And the lower part of this through-hole 152 becomes an insertion part in which the hollow tube 56 as a column head joining member described later is inserted.

As shown in FIG. 22, a plurality of shear reinforcement bars 38 are arranged at the column beam joint 148 of the horizontal member 146 so as to surround the sheath tube 150. And these sheath pipe | tube 150 and the shear reinforcement bar | burr 38 are united by the concrete V which forms the horizontal member 146. FIG.
For convenience of explanation, the column reinforcing bars provided in the column beam joint 148 are omitted, but a plurality of column reinforcing bars are provided so as to be surrounded by the shear reinforcement bars 38.
Further, as shown in FIG. 21, a grout discharge hole 154 described later is formed on the side surface of the column beam joint 148 of the horizontal member 146. The grout discharge hole 154 is connected to the through hole 152.

As shown in the perspective view of FIG. 23 and the front view of FIG. 24, the upper end portion of the lower column member 156 made of PCa extends along the outer periphery of the lower column member 156 so as not to protrude from the upper end surface of the lower column member 156. Twelve sheath tubes 50 are buried, thereby forming holes 54.
Twelve column reinforcing bars 158 are embedded in the lower column member 156 along the outer periphery of the lower column member 156 so as not to protrude from the upper end surface of the lower column member 156, and the upper end portion of the column reinforcing bar 158 is in the sheath tube 50, respectively. Has been inserted. That is, the planar arrangement of the sheath tube 50 and the column rebar 158 is the same. The hole 54 formed in the lower column member 156 accommodates a hollow tube 56 as a column head joining member. The hollow tube 56 is a plug-in mechanical joint that can be inserted without screwing the column rebar 158. In the state of FIG. 24, the column rebar 158 is inserted into the hollow tube 56.

Further, as shown in FIG. 23, a grout injection hole 160 described later is formed on the side surface of the lower column member 156. The grout injection hole 160 is connected to the lower part of the hole 54.
Since the upper column member 162 placed on the horizontal member 146 has the same configuration as the lower column member 156, description thereof is omitted.

  The column reinforcement 158 is provided on the lower column member 156 so as to protrude downward from the lower surface of the lower column member 156, and this planar arrangement is a through hole 152 formed in the column beam joint 148 of the horizontal member 146. It is the same as the plane arrangement. Then, when the upper column member 162 is placed on the column beam joint 148 of the horizontal member 146, the lower end portion of the column rebar 158 does not protrude from the lower surface of the column beam joint 148 of the horizontal member 146. The column reinforcing bar 158 is inserted into the through hole 152 formed in the column beam joint 148 of the horizontal member 146.

As shown in FIG. 24, a plurality of shear reinforcement bars 58 are arranged on the lower column member 156 and the upper column member 162 so as to surround the sheath tube 50 and the column reinforcing bar 158, and the lower column member 156 and the upper column member 162 are arranged. It is united by the concrete V to form.
Note that the column reinforcing bar 158 of the lower column member 156 and the column reinforcing bar 158 of the upper column member 162 may have different diameters. In such a case, a hollow tube that can connect column reinforcing bars having different diameters may be used.

  Next, operations and effects of the third exemplary embodiment of the present invention will be described.

  A building having a precast concrete member joint structure 164 composed of a lower pillar member 156, a horizontal member 146, and an upper pillar member 162 is constructed by a construction method shown in FIGS. For convenience of explanation, the lower column member 156 installed on the left side of the floor slab 66 is referred to as a lower column member 156A, and the lower column member 156 installed approximately in the center of the floor slab 66 is referred to as a lower column member 156B. The lower column member 156 installed on the right side of 66 is referred to as a lower column member 156C. Further, the horizontal members 146 placed on the lower pillar members 156A to 156C are horizontal members 146A to 146C, and the upper pillar members 162 placed on the horizontal members 146A to 146C are upper pillar members 162A to 162C.

  First, as shown in FIG. 25A, a lower column member 156A is installed on the left side on the floor slab 66 of the first floor of the building. A mechanical joint is embedded in the upper part of the floor slab 66. Then, a column reinforcing bar 158 that protrudes downward from the lower column member 156A is inserted into this mechanical joint, and the column reinforcing bar 158 is fixed to the mechanical joint with a hardener, and the floor slab 66 and the lower column member 156A are joined. Do.

  Next, the column beam joint 148 of the horizontal member 146A is placed on the lower column member 156A (horizontal member installation step). As shown in FIG. 6, female screws 68 are formed at the four corners of the upper end surface of the lower column member 156, and the column beam joint 148 is formed according to the screwed amount of the bolt 70 screwed into the female screw 68. Adjust the installation height. The bolts 70 are also provided at the four corners of the upper end surface of the column beam joint 148 of the horizontal member 146 and the upper column member 162, and are attached to the column beam joint 148 and the upper column member 162 of the horizontal member 146. The installation height of the member to be placed is adjusted.

  When the column beam joint 148 of the horizontal member 146A is placed on the lower column member 156A, the hollow tube 56 as the column head joint member is accommodated in the hole 54 of the lower column member 156A, and the lower column It does not protrude from the member 156A. Thereby, the column beam joint part 148 of the horizontal member 146A placed on the lower column member 156A can be moved in the horizontal direction or in the horizontal direction. That is, after the column beam joint 148 of the horizontal member 146 is placed on the lower column member 156, the position of the horizontal member 146 can be adjusted.

  Next, as shown in FIG. 25B, the upper column member 162A is placed on the column beam joint 148 of the horizontal member 146A (upper column member installation step). At this time, the column reinforcing bar 158 protruding downward from the upper column member 162A is inserted into the through-hole 152 formed in the column beam joint 148 of the horizontal member 146A, and the lower end portion of the column reinforcing bar 158 is the column beam. It does not protrude downward from the lower end surface of the joint portion 148. Further, the hollow tube 56 as the column head joining member is accommodated in the hole 54 of the lower column member 156A and does not protrude from the lower column member 156A. Thereby, the upper column member 162A placed on the column beam joint 148 of the horizontal member 146A can be moved in the horizontal direction or horizontally along with the column beam joint 148 of the horizontal member 146A. That is, after the upper column member 162 is placed on the column beam joint 148 of the horizontal member 146, the position of the upper column member 162 can be adjusted in order to improve the construction accuracy.

  Next, the lower column member 156A and the upper column member 162A are joined via the column beam joint 148 of the horizontal member 146A (column head joining step). For the joining method, the same method as in FIGS. 11A and 11B is used. The hollow tube 56 accommodated in the hole 54 of the lower column member 156 is pulled upward, so that the column beam finish of the horizontal member 146 is obtained. It is inserted into the lower portion of the through hole 152 formed in the mouth portion 148. At this time, the end portion of the column reinforcing bar 158 protruding from below the upper column member 162 is inserted into the hollow tube 56.

  Next, after the end of the column reinforcing bar 158 provided on the upper column member 162 is inserted into the hollow tube 56, the lower end surface of the column beam joint 148 of the horizontal member 146A and the upper end surface of the lower column member 156 The outer periphery of the gap space formed between the two is closed with an air hose, a mold, or the like. Further, the hardening material is injected from the grout injection hole 160 formed on the side surface of the lower column member 156A, and the excess hardening material is discharged from the grout discharge hole 154 formed on the side surface of the column beam joint portion 148 of the horizontal member 146. Thus, the hardening material is filled into the through hole 152, the hole 54, the hollow tube 56, and the gap space. Then, the filled hardener is cured to fix the end portion of the column reinforcing bar 158 to the hollow tube 56.

  Next, as shown in FIG. 26C, the horizontal member 146B placed on the lower column member 156B installed at the approximate center of the floor slab 66 is moved laterally or horizontally to the left, and this horizontal member 146B. The beam reinforcing bars 18 and 20 protruding from the left end surface of the beam portion 14 are inserted into a hollow tube 22 provided at the right end portion of the beam portion 16 of the horizontal member 146A.

At this time, the hollow tube 56 as the column head joint member is accommodated in the hole 54 of the lower column member 156 and does not protrude from the lower column member 156. Thereby, the horizontal member 146B can be moved laterally or horizontally, and the beam portion 16 of the horizontal member 146A and the beam portion 14 of the horizontal member 146B can be joined.
The beam part (horizontal member) is laterally moved or horizontally moved so that the beam parts are joined to each other. The end faces of the beam parts are brought into close contact with each other or the gap formed between the end faces of the beam parts. Can be reduced.
That is, it is possible to eliminate the work of post-molding the concrete by providing a formwork at the joint between the beam portions, and the workability can be improved.

  Next, after the position adjustment of the horizontal member 146B is completed, the column beam of the lower column member 156B and the horizontal member 146B is the same as the method of joining the lower column member 156A and the column beam joint 148 of the horizontal member 146A. The joint portion 148 is joined. In this case, the hardening material is injected from the grout injection hole 160 formed on the side surface of the lower column member 156, and excess hardening material is supplied from the grout discharge hole 154 formed in the column beam joint portion 148 of the horizontal member 146. Discharge.

  Next, the gap between the hollow tube 22 provided at the right end of the beam portion 16 of the horizontal member 146A and the beam reinforcing bars 18 and 20 inserted into the hollow tube 22 is filled with a hardening material and cured, The beam reinforcing bars 18 and 20 are fixed to the empty pipe 22. Thereby, the beam part 16 of the horizontal member 146A and the beam part 14 of the horizontal member 146B are joined.

25A to 26D (installation of the horizontal member on the lower column member, installation of the upper column member on the horizontal member, the lower column member and the upper column member via the horizontal member) And a horizontal portion arranged next to each other) are repeated to construct one part of the building.
Further, by repeating the same operation as in FIGS. 25A to 26D, the precast concrete member joining structure 164 for joining the lower pillar member 156 and the upper pillar member 162 via the horizontal member 146 is arranged on the roof. Stack up to the floor and build a building.

  In 3rd Embodiment, although the construction method which installs the horizontal member 146 and the upper pillar member 162 on the lower pillar member 156 installed in the floor slab 66 of the 1st floor of a building was shown, the lower pillar installed in the other floor The same construction method may be used when the horizontal member 146 and the upper column member 162 are installed on the member 156. For example, when the next horizontal members 146A to 146C are placed on the upper pillar members 162A to 162C placed on the horizontal member 146 in FIG. 26D, the upper pillar member of FIG. What is necessary is just to replace 162A-C with the lower column member 156A-C of FIG. Further, the construction of the floor slabs of the second and higher floors may be performed before the upper column member 162 is placed on the horizontal member 146 or after the lower column member 156 and the upper column member 162 are joined. Good.

  In the third embodiment, one of the two horizontal members 146 arranged adjacent to each other is horizontally moved or horizontally moved, and the beam reinforcing bar 18 protruding from the beam portion 14 of the horizontally moved or horizontally moved horizontal member 146, 20 is inserted into the hollow tube 22 provided in the beam portion 16 of the other horizontal member 146, so that the beam portion 14 of one horizontal member 146 and the beam portion 16 of the other horizontal member 146 are joined. However, any method may be used as long as it is a method of joining the beam portions of the horizontal member that can secure the necessary joint strength in terms of structure. For example, similarly to the first embodiment, the beam portions may be joined by a conventional joining method as shown in FIG.

  As described above, the precast concrete member joining structure 164 according to the third embodiment is a method for joining various beam portions in which the horizontal members are moved in the vertical direction, the horizontal direction, or the horizontal direction to join the beam portions of the horizontal members. Can be used in combination. The joint structure 164 of the precast concrete member of the third embodiment is capable of lateral movement or horizontal movement when the horizontal member is placed on the pillar member and after the horizontal member is placed on the lower pillar member. Therefore, this is particularly effective when the horizontal members are moved laterally or horizontally to join the beam portions of the horizontal members.

  Further, a hollow tube 56 as a column head joint member is accommodated in the hole 54 formed in the lower column member 156, and the hollow tube 56 is drawn upward from the hole 54 of the lower column member 156, so that the horizontal member 146 Although an example of insertion into the lower portion of the through hole 152 formed in the column beam joint portion 148 has been shown, a lower portion of the through hole 152 formed in the column beam joint portion 148 of the horizontal member 146 is used as a column head joint member. The hollow tube 56 may be accommodated, and the hollow tube 56 may be drawn downward from the through hole 152 of the column beam joint 148 and inserted into the hole 54 formed in the lower column member 156. In this case, the hole 54 becomes an insertion portion.

  Moreover, although the example which formed the through-hole 152 of the horizontal member 146 with the sheath tube 150 embedded was shown, the hole which can insert the hollow tube 56 is formed in the lower part used as the insertion part while the column rebar 158 can be inserted. Just do it. A tube material other than the sheath tube may be embedded. Moreover, you may form a hole by perforation.

  In addition, although the example in which the hole 54 of the lower column member 156 and the upper column member 162 is formed by the embedded sheath tube 50 has been shown, it is only necessary to form a hole in which the hollow tube 56 is accommodated. A tube material other than the sheath tube may be embedded. Alternatively, a hole may be formed by arranging a cylindrical member at a position where the hole is to be formed and taking out the cylindrical member after the concrete has hardened. Moreover, you may form a hole by perforation.

Further, the insertion portion provided in the column beam joint 148 of the horizontal member 146 only needs to be able to insert the hollow tube 56, and is a space P that accommodates a plurality of hollow tubes, as shown in FIG. May be.
Moreover, although the column head joining member is the hollow tube 56, as shown in FIG. 13, as a bar material disposed so as to overlap in the longitudinal direction with respect to the column reinforcing bars provided in each member to be joined. Also good.
Moreover, the joining method of the floor slab 66 and the lower pillar member 156 should just be a method which can ensure the joint strength required on a structure.

In addition, the arrangement, diameter size, shape, etc. of the column reinforcing bars 30, 52, 122, the beam reinforcing bars 18, 20, and the shear reinforcing bars 36, 38, 58 shown in the first to third embodiments are as follows. What is necessary is just to determine suitably according to the intensity | strength calculated | required by each member.
Moreover, all the column reinforcements provided in the member to be joined (the column reinforcements 52 and 30 in the first embodiment, the column reinforcements 122 in the second embodiment, and the column reinforcements 158 in the third embodiment). ) Has been shown as being joined by the hollow tubes 34 and 56, but it is not necessary to join all the column reinforcing bars as long as sufficient joining strength is obtained. The arrangement and number of the hollow tubes 34 and 56 may be determined as appropriate. In view of the bonding strength, it is preferable to join the column reinforcing bars arranged at the corners.

In the first to third embodiments, the hollow tubes 34, 56, 106, 108 are plug-in type mechanical joints, but a female screw for screwing a column reinforcing bar or a reinforcing rod is formed on the inner wall of the hollow tube. It is good also as a screwed-in type mechanical coupling.
Even when the hollow tubes 34, 56, 106, 108 are screwed-type mechanical joints, the column rebars 30, 52 and the hollow tube 34, the column rebars 30, 52, the hollow tube 56, and the rebar are ball screws. If grease or the like is sewn so as to reduce friction between the rod 104 and the hollow tubes 106 and 108, the column rebar 122 and the hollow tube 34, and the column rebar 158 and the hollow tube 56, the hollow tube and the rebar The rod can be lowered by its own weight and screwed into the column reinforcement or hollow tube.

  Further, the horizontal member 10, the lower column member 44, the upper column member 64, the lower horizontal member 118, the upper horizontal member 142, the column member 126, the horizontal member 146, the lower column member 156, and the upper column member 162 are provided on the upper end surfaces. The bolts 70 may be eliminated so that the end faces of the members to be joined are in close contact with each other. In construction, it is preferable to provide a gap of about 20 mm between the end faces of the members to be joined.

In FIGS. 5, 10, 18, 19, 25, and 26, an example is shown in which a building is constructed by installing three pillar members at equal intervals on the floor slab 66, but the arrangement and number of pillar members are as follows. Depending on the specifications of the building, it may be determined as appropriate.
In addition, the horizontal members 10, 146, the lower horizontal member 118, and the upper horizontal member 142 are connected to the column beam joints 12, 120, 148, and the two beam portions 14 projecting from the left and right side surfaces of the column beam joint, Although the example comprised by 16 was shown, the number and arrangement | positioning of the beam part integrated with a column beam joint part are not restricted to this. For example, as shown in FIGS. 27A to 27E, horizontal members 170A having various shapes including a column beam joint portion 166 and beam portions 168A to 168D integrated with the column beam joint portion 166. -E may be used in the first to third embodiments.

  The joint structures 76, 144, and 164 of the precast concrete member may be used for a part of the building or may be used for all. By constructing a building using the joint structures 76, 144, and 164 of precast concrete members, a building with improved construction quality can be constructed.

  The first to third embodiments of the present invention have been described above, but the present invention is not limited to these embodiments, and the first to third embodiments may be used in combination. Of course, various embodiments can be implemented without departing from the scope of the present invention.

It is a perspective view which shows the horizontal member which concerns on the 1st Embodiment of this invention. It is a front view which shows the horizontal member which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the lower pillar member and upper pillar member which concern on the 1st Embodiment of this invention. It is a front view which shows the lower pillar member and upper pillar member which concern on the 1st Embodiment of this invention. It is explanatory drawing which shows the construction method of the building which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the installation height adjustment method of the precast concrete member which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the joining method of the precast concrete members which concern on the 1st Embodiment of this invention. It is an enlarged view which shows the joining method of the precast concrete members which concern on the 1st Embodiment of this invention. It is explanatory drawing which shows the joining method of the precast concrete members which concern on the 1st Embodiment of this invention. It is explanatory drawing which shows the modification of the construction method of the building which concerns on the 1st Embodiment of this invention. It is an enlarged view which shows the modification of the joining method of the precast concrete members which concern on the 1st Embodiment of this invention. It is a front view which shows the modification of the joining method of the precast concrete members which concern on the 1st Embodiment of this invention. It is a front view which shows the modification of the joining method of the precast concrete members which concern on the 1st Embodiment of this invention. It is a perspective view which shows the lower horizontal member and upper horizontal member which concern on the 2nd Embodiment of this invention. It is a front view which shows the lower horizontal member and upper horizontal member which concern on the 2nd Embodiment of this invention. It is a perspective view which shows the pillar member which concerns on the 2nd Embodiment of this invention. It is a front view which shows the pillar member which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the construction method of the building which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the construction method of the building which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the joining method of the precast concrete members which concern on the 2nd Embodiment of this invention. It is a perspective view which shows the horizontal member which concerns on the 3rd Embodiment of this invention. It is a front view which shows the horizontal member which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the lower pillar member and upper pillar member which concern on the 3rd Embodiment of this invention. It is a front view which shows the lower pillar member and upper pillar member which concern on the 3rd Embodiment of this invention. It is explanatory drawing which shows the construction method of the building which concerns on the 3rd Embodiment of this invention. It is explanatory drawing which shows the construction method of the building which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the modification of the horizontal member which concerns on embodiment of this invention. It is a front view which shows the conventional column beam junction structure. It is a front view which shows the conventional column beam junction structure.

Explanation of symbols

10, 78, 146 Horizontal member 12, 94, 120, 148 Column beam joint portion 14, 16, 80, 82 Beam portion 26 Hole (second insertion portion)
30, 52, 122, 158 Column reinforcement 34 Hollow tube (column head joint member)
44, 156 Lower column member 48 Hole (first insertion portion)
56 Hollow tube (column base joint member, column head joint member)
64, 162 Upper column members 76, 144, 164 Precast concrete member joint structure 104 Rebar (bar)
118 Lower horizontal member 126 Column member 130, 152 Through hole 142 Upper horizontal member P Space

Claims (9)

A lower column member made of precast concrete;
A horizontal member made of precast concrete, which is constituted by a column beam joint part and a beam part integrated with the column beam joint part, and on which the column beam joint part is placed on the lower column member;
A first insertion portion formed in a column beam joint of the lower column member or the horizontal member, and comprising a hole or a space;
The horizontal member is accommodated in the column beam joint or the lower column member, and is pulled out from the column beam joint or the lower column member of the horizontal member and inserted into the first insertion portion, and the lower column A column head joint member for joining the member and the column beam joint of the horizontal member;
An upper column member made of precast concrete placed on the column beam joint of the horizontal member;
A second insertion portion formed in a column beam joint of the horizontal member or the upper column member, and comprising a hole or a space;
The horizontal member is accommodated in the column beam joint portion of the upper column member or the horizontal member, and is pulled out from the column beam joint portion of the upper column member or the horizontal member and inserted into the second insertion portion. A column base joint member for joining the column beam joint and the upper column member;
A joint structure for precast concrete members, comprising: A lower horizontal member made of precast concrete, which is constituted by a beam portion integrated with the beam-column joint portion and the beam-column mouth portion, and is provided with column reinforcing bars so as to protrude upward from the beam-column mouth portion,
A column member made of precast concrete placed on the column beam joint of the lower horizontal member;
The column reinforcement is inserted into the column member so that the column reinforcement does not protrude from the upper surface of the column member when the column member is placed on the column beam joint of the lower horizontal member. A through hole,
An upper horizontal member made of precast concrete, which is constituted by a column beam joint portion and a beam portion integrated with the column beam joint portion, and on which the column beam joint portion is placed,
An insertion portion formed in a column beam joint portion of the column member or the upper horizontal member, and comprising a hole or a space;
The upper horizontal member is accommodated in the column beam joint or the column member, and is pulled out of the column beam joint or the column member of the upper horizontal member and inserted into the insertion portion, and the column member is inserted through the column member. A column head joint member for joining the column beam joint of the lower horizontal member and the column beam joint of the upper horizontal member;
A joint structure for precast concrete members, comprising: A lower column member made of precast concrete;
A horizontal member made of precast concrete, which is constituted by a column beam joint part and a beam part integrated with the column beam joint part, and on which the column beam joint part is placed on the lower column member;
Column reinforcement is provided so as to protrude downward, and an upper column member made of precast concrete placed on the column beam joint of the horizontal member,
When the upper column member is placed on the column beam joint portion of the horizontal member, the column reinforcement is formed from the lower surface of the column beam joint portion of the horizontal member. A through hole into which the column reinforcing bar is inserted so as not to protrude;
An insertion part formed in a column beam joint part of the lower pillar member or the horizontal member, and comprising a hole or a space;
The horizontal member is accommodated in the column beam joint or the lower column member, and is pulled out from the column beam joint or the lower column member of the horizontal member and inserted into the insertion portion, and the column of the horizontal member. A column head joint member that joins the lower column member and the upper column member via a beam joint;
A joint structure for precast concrete members, comprising:   The column head joint member or the column base joint member is a hollow tube that connects column reinforcing bars provided in each member to be joined. The joint structure of the precast concrete member as described.   The column head joint member or the column base joint member is a bar disposed so as to overlap in a longitudinal direction with respect to a column reinforcing bar provided in each member to be joined. The joining structure of the precast concrete member of any one of these.   A building having the joint structure of precast concrete members according to any one of claims 1 to 5. A horizontal member for placing a column beam joint of a precast concrete horizontal member composed of a column beam joint and a beam unit integrated with the column beam joint on a precast concrete lower column member Installation process;
A column head joint member housed in the column beam joint of the horizontal member or the lower column member is pulled out from the column beam joint of the horizontal member or the lower column member, and the lower column member or the horizontal member A column head joining step of joining the lower column member and the column beam joint of the horizontal member by inserting the first column into a first insertion portion formed of a hole or space formed in the column beam joint;
An upper column member installation step of placing an upper column member made of precast concrete on the column beam joint of the horizontal member;
The column base joint member accommodated in the column beam joint of the upper column member or the horizontal member is pulled out from the column beam joint of the upper column member or the horizontal member, and the column beam joint of the horizontal member is drawn. A column base part joining step of joining the column beam joint part of the horizontal member and the upper pillar member by inserting into a second insertion part formed of a hole or a space formed in a part or the upper pillar member;
A construction method for a building, characterized by comprising: Precast column rebar provided to protrude upward from the column beam joint of a lower horizontal member made of precast concrete composed of a column beam joint and a beam unit integrated with the column beam joint. A column that is inserted into a through-hole formed in a concrete column member so that the column rebar does not protrude from the upper surface of the column member, and the column member is placed on a column beam joint of the lower horizontal member Component installation process;
An upper horizontal member installation step of placing the column beam joint of the upper horizontal member made of precast concrete constituted by the column beam joint part and the beam part integrated with the column beam joint part on the column member; ,
A column head joint member accommodated in the column beam joint of the upper horizontal member or the column member is pulled out from the column beam joint of the upper horizontal member or the column member, and the column member or the upper horizontal member Inserted into an insertion part formed of a hole or space formed in a column beam joint, and the column beam joint of the lower horizontal member and the column beam joint of the upper horizontal member are joined via the column member A column head joining process,
A construction method for a building, characterized by comprising: A horizontal member for placing a column beam joint of a precast concrete horizontal member composed of a column beam joint and a beam unit integrated with the column beam joint on a precast concrete lower column member Installation process;
Column reinforcement provided so as to protrude downward from the upper column member made of precast concrete is inserted into the through hole formed in the column beam joint portion of the horizontal member from the lower surface of the column beam joint portion of the horizontal member. An upper column member installation step of inserting the upper column member on the column beam joint portion of the horizontal member by inserting the column rebar so as not to protrude,
A column head joint member housed in the column beam joint of the horizontal member or the lower column member is pulled out from the column beam joint of the horizontal member or the lower column member, and the lower column member or the horizontal member A column head joining step that is inserted into an insertion portion formed of a hole or a space formed in the column beam joint, and joins the lower column member and the upper column member via the column beam joint of the horizontal member; ,
A construction method for a building, characterized by comprising:

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