JP2009114755A - Joint structure of precast concrete column member, and method for joining precast concrete column members - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure of a precast concrete column member, and a method for joining the precast concrete column members for moving the precast concrete upper column member put on the precast concrete lower column member in the transverse direction or horizontally. <P>SOLUTION: In this joint structure of the precast concrete column member, a tenon 16 is provided at an end of the lower column member 12 formed of precast concrete, and a mortice 20 is provided at an end of the upper column member 14 formed of precast concrete. The tenon 16 and the mortice 20 which are mutually combined are mutually connected by a connection means 28. Since the mortice 20 and the tenon 16 are combined to move relatively in the transverse direction or horizontally when the upper column member 14 is put on the lower column member 12, the upper column member 14 put on the lower column member 12 can move in the transverse direction or horizontally. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a joining structure of precast concrete column members for joining precast concrete column members to each other, and a method for joining precast concrete column members.

  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-column connection structure 300 as shown in FIG. 13 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. 14, 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 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.

  Further, a beam sleeve 332 is embedded at the end of the large beam 328 of the PCa horizontal structure 330 located on the left side, and protrudes from the end of the beam 328 to the PCa horizontal structure 330 located on the right side. A connecting rod for beams 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.

Here, when the joining method of the column beam joint structures 300 and 322 is to be applied to the joining of the PCa pillar members without using the column joints, the PCa upper pillar member (PCa pillars 310 and 336) is replaced with the PCa. When placed on the lower column member (PCa columns 302 and 324), the horizontal movement of the PCa upper column member is restricted by the column reinforcing bars (column connecting reinforcing bars 316 and 340). Therefore, it is difficult to adjust the position by moving the PCa upper column member in the horizontal direction.
Japanese Patent Application Laid-Open No. 2004-346587

  In consideration of such facts, the present invention provides a precast concrete column member joining structure capable of moving a precast concrete upper column member placed on a precast concrete lower column member in a lateral direction or a horizontal direction, and a precast concrete column member joining. It is an object to provide a method.

  The invention according to claim 1 is a lower column member formed of precast concrete, an upper column member formed of precast concrete and placed on the lower column member, and an end of the lower column member or the A tenon portion provided at an end portion of the upper column member, and a tenon receiving portion which is provided at an end portion of the upper column member or an end portion of the lower column member so as to be movable relative to the tenon portion horizontally or horizontally. And a connecting means for connecting the tenon portion and the tenon receiving portion in a combined state.

In the first aspect of the present invention, the upper column member formed of the precast concrete is placed on the lower column member formed of the precast concrete.
A tenon is provided at the end of the lower column member or the end of the upper column member. A tenon receiving portion is provided at the end of the upper column member or the end of the lower column member. The tenon receiving part is combined with the tenon part so as to be movable relative to the horizontal direction or the horizontal direction.
Further, the tenon portion and the tenon receiving portion in a combined state are connected by a connecting means.

  Thus, when the upper column member is placed on the lower column member, the tenon receiving portion is combined with the tenon portion so as to be relatively movable in the horizontal direction or the horizontal direction, so the upper column member placed on the lower column member Can be moved laterally or horizontally. Therefore, after placing the upper column member on the lower column member, the position of the upper column member can be adjusted in order to improve the construction accuracy.

  In addition, the tenon portion or tenon receiving portion provided at the end of the lower column member serves as a guide when combining the tenon receiving portion or tenon portion provided at the end of the upper column member. It is easy to align the upper column member to be placed at a predetermined position, which contributes to improvement in construction accuracy.

  According to a second aspect of the present invention, the tenon portion includes a connecting portion provided to protrude from an end portion of the lower column member or an end portion of the upper column member, and the tenon receiving portion is formed from the upper column. It has the groove | channel which is formed in the edge part of a member or the edge part of the said lower pillar member, and the said connection part is inserted.

  In the second aspect of the invention, the tenon portion has a connecting portion that protrudes from the end of the lower column member or the end of the upper column member. Further, the tenon receiving portion has a groove formed at the end of the upper column member or the end of the lower column member. Then, the connecting portion of the tenon portion is inserted into the groove of the tenon receiving portion.

Therefore, the lower column member and the upper column member can be joined by a simple method.
Further, even when the upper column member is placed on the lower column member and the tenon portion and the tenon receiving portion are not yet connected by the connecting means, the tenon connecting portion is inserted into the groove of the tenon receiving portion. Since it is a joined structure, the upper column member is difficult to collapse. Thereby, the safety of construction can be improved.

  The invention according to claim 3 is characterized in that the connecting means is a reinforcing bar inserted into a connecting hole formed in the tenon portion and the tenon receiving portion.

In the invention described in claim 3, the reinforcing bars inserted into the connecting holes formed in the tenon portion and the tenon receiving portion are the connecting means.
Therefore, the lower pillar member and the upper pillar member can be reliably joined by a simple method.

  According to a fourth aspect of the present invention, the connecting means is inserted into a connecting hole formed in the tenon portion and the tenon receiving portion, and prestresses the tenon portion and the tenon receiving portion in a combined state. It is characterized by being a PC steel bar.

In the invention according to claim 4, the PC steel rod inserted into the connecting hole formed in the tenon portion and the tenon receiving portion is the connecting means. And this prestressing is given to the tenon part and tenon receiving part of the state which were combined by this PC steel bar.
Thereby, the compressive force acting on the joint surface between the tenon portion and the tenon receiving portion increases, and it is possible to reliably transmit the shearing force due to friction. Therefore, the lower pillar member and the upper pillar member can be firmly joined.

  The invention according to claim 5 is that the connecting means is a bolt member that is inserted into a connecting hole formed in the tenon portion and the tenon receiving portion and connects the tenon portion and the tenon receiving portion. It is characterized by.

In the invention according to claim 5, the bolt member inserted into the connecting hole formed in the tenon portion and the tenon receiving portion and connecting the tenon portion and the tenon receiving portion serves as the connecting means.
Therefore, the lower column member and the upper column member can be more reliably joined by a simple method.

  The invention according to claim 6 is a precast concrete column member joining method for joining a lower column member formed of precast concrete and an upper column member formed of precast concrete and placed on the lower column member. The tenon provided at the end of the lower column member or the end of the upper column member is moved laterally to the tenon receiving portion provided at the end of the upper column member or the end of the lower column member, or It is characterized by having a combination step of combining horizontally and relatively movable, and a connecting step of connecting the tenon portion and the tenon receiving portion in a combined state by a connecting means.

  In the invention according to claim 6, the joining method of the precast concrete column member which joins the lower pillar member formed with precast concrete and the upper pillar member formed on this lower pillar member and formed with precast concrete is , Has a combination process and a connection process.

In the combination process, the tenon provided at the end of the lower column member or the end of the upper column member is laterally or horizontally applied to the end of the upper column member or the tenon receiving portion provided at the end of the lower column member. Combined so that relative movement is possible.
In the connecting step, the tenon portion and the tenon receiving portion in a combined state are connected by a connecting means.

  Thus, when the upper column member is placed on the lower column member, the tenon portion and the tenon receiving portion are combined so that they can move relative to each other in the horizontal direction or horizontally, so the upper column member placed on the lower column member Can be moved laterally or horizontally. Therefore, after placing the upper column member on the lower column member, the position of the upper column member can be adjusted in order to improve the construction accuracy.

  In addition, the tenon portion or tenon receiving portion provided at the end of the lower column member serves as a guide when combining the tenon receiving portion or tenon portion provided at the end of the upper column member. It is easy to align the upper column member to be placed at a predetermined position, which contributes to improvement in construction accuracy.

  According to a seventh aspect of the present invention, the tenon portion has a connecting portion that protrudes from an end portion of the lower column member or an end portion of the upper column member, and the tenon receiving portion is the upper column member. It has the groove | channel which is formed in the edge part of a member or the edge part of the said lower pillar member, and the said connection part is inserted.

  In the invention according to claim 7, the tenon portion has a connecting portion provided so as to protrude from the end portion of the lower column member or the end portion of the upper column member. Further, the tenon receiving portion has a groove formed at the end of the upper column member or the end of the lower column member. Then, the connecting portion of the tenon portion is inserted into the groove of the tenon receiving portion.

Therefore, the lower column member and the upper column member can be joined by a simple method.
Further, even when the upper column member is placed on the lower column member and the tenon portion and the tenon receiving portion are not yet connected by the connecting means, the tenon connecting portion is inserted into the groove of the tenon receiving portion. Since it is a joined structure, the upper column member is difficult to collapse. Thereby, the safety of construction can be improved.

  The invention according to claim 8 is characterized in that the connecting means is a reinforcing bar inserted into a connecting hole formed in the tenon portion and the tenon receiving portion.

In the invention according to claim 8, the reinforcing bars inserted into the connecting holes formed in the tenon portion and the tenon receiving portion are the connecting means.
Therefore, the lower pillar member and the upper pillar member can be reliably joined by a simple method.

  According to a ninth aspect of the present invention, the connecting means is inserted into a connecting hole formed in the tenon portion and the tenon receiving portion, and prestresses the tenon portion and the tenon receiving portion in a combined state. It is characterized by being a PC steel bar.

In the invention according to claim 9, the PC steel rod inserted into the connecting hole formed in the tenon portion and the tenon receiving portion is the connecting means. And this prestressing is given to the tenon part and tenon receiving part of the state which were combined by this PC steel bar.
Thereby, the compressive force acting on the joint surface between the tenon portion and the tenon receiving portion increases, and it is possible to reliably transmit the shearing force due to friction. Therefore, the lower pillar member and the upper pillar member can be firmly joined.

  According to a tenth aspect of the present invention, the connecting means is a bolt member that is inserted into a connecting hole formed in the tenon portion and the tenon receiving portion, and connects the tenon portion and the tenon receiving portion. It is characterized by.

In the tenth aspect of the present invention, the bolt member that is inserted into the connecting hole formed in the tenon portion and the tenon receiving portion and connects the tenon portion and the tenon receiving portion is the connecting means.
Therefore, the lower column member and the upper column member can be more reliably joined by a simple method.

  Since this invention set it as the said structure, the precast concrete upper pillar member mounted on the precast concrete lower pillar member can be moved to a horizontal direction or a horizontal.

  The joining structure of the precast concrete column member of the present invention and the joining method of the precast concrete column member will be described with reference to the drawings. In the present embodiment, the lower column member and the upper column member are column members formed of precast concrete (hereinafter referred to as PCa). The present invention can be applied to various PCa column members.

  First, the joint structure of PCa pillar members according to the 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, in the PCa column member joining structure 10, the prismatic upper portion formed of PCa is placed on the prismatic lower column member 12 formed of PCa. The column member 14 is placed. The horizontal sectional shape of the upper portion 24 of the upper column member 14 is the same as the horizontal sectional shape of the lower portion 26 of the lower column member 12.

  A tenon portion 16 is provided at the upper end portion of the lower column member 12. The tenon portion 16 includes a connecting portion 16A provided to project from the upper end portion of the lower column member 12, and a notch portion 16B formed on the side of the connecting portion 16A.

  A plurality of connecting holes 18 are formed in the connecting portion 16A so as to penetrate the connecting portion 16A substantially horizontally. As shown in FIG. 2, three connecting holes 18 are arranged in the horizontal direction and four in the vertical direction. That is, a total of twelve connecting holes 18 are formed.

  A tenon receiving portion 20 having the same shape as the tenon portion 16 is provided at the lower end portion of the upper column member 14. The tenon receiving part 20 is constituted by a connecting part 20A provided to project from the lower end part of the upper column member 14, and a notch part 20B formed on the side of the connecting part 20A.

The connecting portion 20A is formed with a plurality of connecting holes 22 penetrating the connecting portion 20A substantially horizontally.
The arrangement of the connecting holes 22 is the same as the arrangement of the connecting holes 18, and a total of twelve connecting holes 22 are formed. Further, the diameters of the connecting hole 18 and the connecting hole 22 are substantially equal.

  The shape of the notch 16B formed on the side of the connecting part 16A is substantially the same as the shape of the connecting part 20A, and the shape of the notch 20B formed on the side of the connecting part 20A is The shape of the portion 16A is almost the same. That is, when the tenon portion 16 is combined with the tenon receiving portion 20, the lower pillar member 12 and the upper pillar member 14 are integrated, and the horizontal sectional shape of the combined portion is the upper portion 24 of the upper pillar member 14 and the lower pillar. One prism is substantially equal to the horizontal sectional shape of the lower portion 26 of the member 12.

  Further, female screws (not shown) are formed in the vicinity of the four corners of the bottom surface H of the notch 16B formed on the side of the connecting portion 16A, and a bolt (not shown) screwed into the female screw is screwed. The installation height of the upper column member 14 placed on the bottom surface H is adjusted by the amount.

  Next, a method for joining PCa column members according to the first embodiment of the present invention will be described.

In the PCa column member joining method, first, as shown in FIG. 1, the upper column member 14 is placed on the lower column member 12.
Next, the tenon portion 16 provided at the upper end portion of the lower column member 12 is combined with the tenon receiving portion 20 provided at the lower end portion of the upper column member 14 so as to be capable of relative movement in the horizontal direction or the horizontal direction (combining step). That is, the connecting portion 16 </ b> A provided at the upper end portion of the lower column member 12 is inserted into the notch portion 20 </ b> B formed at the lower end portion of the upper column member 14. At the same time, the connecting portion 20 </ b> A provided at the lower end portion of the upper column member 14 is inserted into the notch portion 16 </ b> B formed at the upper end portion of the lower column member 12.

  At this time, the installation height of the upper column member 14 is cut so that the center of the connection hole 18 formed in the lower column member 12 and the center of the connection hole 22 formed in the upper column member 14 substantially coincide. It is adjusted in advance by bolts provided near the four corners of the bottom surface H of the notch 16B.

  Next, rod-like reinforcing bars 28 as connecting means are inserted into the connecting holes 18 and 22, and the reinforcing bars 28 are arranged so as to straddle the connecting part 16A and the connecting part 20A. The receiving part 20 is connected (connection process).

Next, as shown in FIG. 3, in the gap S ₁ formed between the tenon portion 16 of the lower column member 12 and the tenon receiving portion 20 of the upper column member 14, the connection holes 18 and 22, the reinforcing bars 28, The hardener W is filled in the gap S2 formed between the _two , the hardener W is cured, and the reinforcing bars 28 are fixed to the lower pillar member 12 and the upper pillar member 14, so that the lower pillar member 12 and the upper pillar are fixed. The member 14 is joined.
For convenience of explanation, only one reinforcing bar 28 is shown in FIG. 1, but the reinforcing bar 28 is inserted into all the connecting holes 18 and 22.

  Next, the operation and effect of the PCa pillar member joining structure and the PCa pillar member joining method according to the first embodiment of the present invention will be described.

  As shown in FIG. 1, when the upper column member 14 is placed on the lower column member 12, the tenon receiving portion 20 is combined with the tenon portion 16 so as to be relatively movable in the horizontal direction or the horizontal direction. The upper column member 14 placed thereon can be moved in the horizontal direction or in the horizontal direction.

Therefore, after the upper column member 14 is placed on the lower column member 12, the position of the upper column member 14 can be adjusted in order to improve the construction accuracy.
Further, the tenon portion 16 provided at the upper end portion of the lower column member 12 serves as a guide when the tenon receiving portion 20 provided at the lower end portion of the upper column member 14 is combined, so that it is placed on the lower column member 12. It is easy to align the upper column member 14 to be in a predetermined position, which contributes to improvement of the construction accuracy.
Further, since the reinforcing bar 28 as the connecting means is inserted into the connecting holes 18 and 22 formed in the tenon portion 16 and the tenon receiving portion 20 to join the lower column member 12 and the upper column member 14, a simple method is provided. Thus, the lower pillar member 12 and the upper pillar member 14 can be reliably joined.

  Next, the joint structure of PCa pillar members according to the second embodiment of the present invention will be described.

  In the second embodiment, the reinforcing bar 28 as the connecting means of the first embodiment is a bolt member. Therefore, 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. 4, in the PCa column member joining structure 30, the upper column member 14 is placed on the lower column member 12.
As shown in FIG. 5 which is a front view of FIG. 5 and FIG. 6 which is an AA cross section of FIG. 5, the connection portion 16A of the tenon portion 16 provided at the upper end portion of the lower column member 12 is connected to the connection portion 16A from the side surface. Eight steel pipes 32 are embedded substantially horizontally so that the end portions do not protrude, and the connection holes 34 are formed substantially horizontally by the steel pipes 32. As shown in FIG. 5, the connection holes 34 are arranged in a staggered manner.

  Further, eight long nuts 36 are embedded substantially horizontally in the connecting portion 20A of the tenon receiving portion 20 provided at the lower end portion of the upper column member 14 so that the end portion does not protrude from the side surface of the connecting portion 20A. A connecting hole 38 is formed substantially horizontally by the long nut 36.

  The arrangement of the connection holes 38 is the same as the arrangement of the connection holes 34, and a total of eight connection holes 38 are formed. The connecting hole 34 can be inserted with a bolt member 40 described later and has a diameter as small as possible. The long nut 36 is formed with a female screw into which the bolt member 40 can be screwed.

  As shown in FIG. 7, the end of the steel pipe 32 is joined to the fixture 42 by welding or the like. Both ends of the fixture 42 are bent into a substantially arc shape, and a communication hole 44 communicating with the connection hole 34 of the steel pipe 32 is formed at the center of the fixture 42. Further, a steel pipe 46 is joined to the fixing bracket 42 opposite to the side where the steel pipe 32 is provided by welding or the like. The inner diameter of the steel pipe 46 is large enough to accommodate the head of the bolt member 40 and the washer 48 described later.

  As shown in FIG. 8, the end of the long nut 36 is joined to the fixture 50 by welding or the like. Both ends of the fixture 50 are bent into a substantially arc shape.

Further, as shown in FIGS. 5 and 6, reinforcing bars 52 (see FIG. 9) are disposed around the steel pipe 32 and the long nut 36 to prevent the steel pipe 32 and the long nut 36 from being broken. Yes.
As shown in FIGS. 5 and 6, the connecting hole 34 is arranged at a predetermined position by hooking the arc portion of the fixing bracket 42 to the column reinforcing bar 54 provided on the lower column member 12. Further, the connecting hole 38 is arranged at a predetermined position by hooking the arc portion of the fixing bracket 50 to the column reinforcing bar 56 provided in the upper column member 14. The lower column member 12 is provided with a shear reinforcing bar 58 so as to surround the column reinforcing bar 54, and the upper column member 14 is provided with a shear reinforcing bar so as to surround the column reinforcing bar 56.

  Next, a method for joining PCa column members according to the second embodiment of the present invention will be described.

In the PCa column member joining method, first, as shown in FIG. 4, the upper column member 14 is placed on the lower column member 12.
Next, the tenon portion 16 provided at the upper end portion of the lower column member 12 is combined with the tenon receiving portion 20 provided at the lower end portion of the upper column member 14 so as to be capable of relative movement in the horizontal direction or the horizontal direction (combining step). That is, the connecting portion 16 </ b> A provided at the upper end portion of the lower column member 12 is inserted into the notch portion 20 </ b> B formed at the lower end portion of the upper column member 14. At the same time, the connecting portion 20 </ b> A provided at the lower end portion of the upper column member 14 is inserted into the notch portion 16 </ b> B formed at the upper end portion of the lower column member 12.

  At this time, the installation height of the upper column member 14 is cut so that the center of the connection hole 34 formed in the lower column member 12 and the center of the connection hole 38 formed in the upper column member 14 substantially coincide. It is adjusted in advance by bolts provided near the four corners of the bottom surface H of the notch 16B.

  Next, the bolt member 40 inserted into the connection hole 34 of the steel pipe 32 through the washer 48 is screwed into the long nut 36 and is firmly tightened and fixed. That is, a bolt member 40 as a connecting means is inserted into the connecting holes 34 and 38, and the bolt member 40 is arranged so as to straddle the connecting portion 16A of the tenon portion 16 and the connecting portion 20A of the tenon receiving portion 20 and assembled. The mortise portion 16 and the mortise receiving portion 20 in a state of being connected are connected (connection step).

Next, in the gap S ₁ formed between the tenon portion 16 of the lower column member 12 and the tenon receiving portion 20 of the upper column member 14, in the gap formed between the connecting hole 34 and the bolt member 40, The steel tube 46 is filled with the same hardener W as in the first embodiment, the hardener W is cured, and the bolt member 40 is fixed to the lower column member 12, so that the lower column member 12 and the upper column member are fixed. 14 is joined.
For convenience of explanation, only one bolt 40 is shown in FIG. 4, but the bolt 40 is inserted into all the connecting holes 34 and 38.

  Next, operations and effects of the PCa column member joining structure and the PCa column member joining method according to the second embodiment of the present invention will be described.

  As shown in FIG. 4, when the upper column member 14 is placed on the lower column member 12, the tenon receiving portion 20 is combined with the tenon portion 16 so as to be relatively movable in the lateral direction or the horizontal direction. The upper column member 14 placed thereon can be moved in the horizontal direction or in the horizontal direction.

Therefore, after the upper column member 14 is placed on the lower column member 12, the position of the upper column member 14 can be adjusted in order to improve the construction accuracy.
Further, the tenon portion 16 provided at the upper end portion of the lower column member 12 serves as a guide when the tenon receiving portion 20 provided at the lower end portion of the upper column member 14 is combined, so that it is placed on the lower column member 12. It is easy to align the upper column member 14 to be in a predetermined position, which contributes to improvement of the construction accuracy.
Further, the lower column member 12 and the upper column member are formed by inserting and screwing bolt members 40 as connecting means into the connecting holes 34 and 38 formed in the tenon portion 16 and the tenon receiving portion 20 and screwing them in tightly. 14, the lower column member 12 and the upper column member 14 can be more reliably bonded by a simple method.

  Next, the joint structure of PCa pillar members according to the third embodiment of the present invention will be described.

  In the third embodiment, the tenon receiving portion 20 of the first embodiment is provided with two connecting portions provided protruding from the lower end portion of the upper column member 14, and a groove formed between the two connecting portions. It is constituted by. Therefore, in the description of the third 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. 10 and the front view of FIG. 11, the upper column member 14 is placed on the lower column member 12 in the PCa column member joining structure 60.
A tenon portion 62 is provided at the upper end portion of the lower column member 12. The tenon portion 62 is configured by a connecting portion 62A provided so as to protrude substantially in the center in the horizontal direction of the upper end portion of the lower column member 12, and notches 62B and 62C formed on both sides of the connecting portion 62A. Yes. That is, the tenon portion 62 has a connecting portion 62 </ b> A provided to protrude from the upper end portion of the lower column member 12. Further, the notch 62B and the notch 62C have the same shape.

  A plurality of connecting holes 64 are formed in the connecting portion 62A of the tenon portion 62 so as to penetrate the connecting portion 62A substantially horizontally. As shown in FIG. 11, three connecting holes 64 are arranged in the horizontal direction and four in the vertical direction. That is, a total of twelve connecting holes 64 are formed.

  A tenon receiving portion 66 is provided at the lower end portion of the upper column member 14. The tenon receiving portion 66 includes two connecting portions 66A and 66B that are provided on both sides of the lower end portion of the upper column member 14, and a notch portion 66C as a groove formed between the connecting portions 66A and 66B. It is constituted by.

  The shape of the notch 66C formed between the connecting portions 66A and 66B of the upper column member 14 is substantially the same as the shape of the connecting portion 62A of the lower column member 12. Further, the notches 62B and 62C formed on both sides of the connecting portion 62A of the lower column member 12 are substantially the same as the shapes of the connecting portions 66A and 66B of the upper column member 14.

  That is, the tenon receiving portion 66 is formed at the lower end portion of the upper column member 14, and has a groove (notch portion 66C) into which the connecting portion 62A of the lower column member 12 is inserted. Further, when the tenon portion 62 is combined with the tenon receiving portion 66, the lower column member 12 and the upper column member 14 are integrated, and the horizontal sectional shape of the combined portion is the upper portion 24 of the upper column member 14 and the lower column. One prism is substantially equal to the horizontal sectional shape of the lower portion 26 of the member 12.

A plurality of connecting holes 68 and 70 that penetrate the connecting portions 66A and 66B substantially horizontally are formed in the connecting portions 66A and 66B of the upper column member 14.
The arrangement of the connection holes 68 and 70 is the same as the arrangement of the connection holes 64, and a total of twelve connection holes 68 and 70 are formed. Further, the diameters of the connecting hole 64, the connecting hole 68, and the connecting hole 70 are substantially equal.

  Further, female screws (not shown) are formed in the vicinity of the four corners of the bottom surfaces P and Q of the notches 62B and 62C formed in the upper end portion of the lower column member 12, and a bolt ( The installation height of the upper column member 14 placed on the bottom surfaces P and Q is adjusted by the screwing amount (not shown).

  Next, a method for joining PCa column members according to the third embodiment of the present invention will be described.

In the PCa column member joining method, first, as shown in FIG. 10, the upper column member 14 is placed on the lower column member 12.
Next, the tenon portion 62 provided at the upper end portion of the lower column member 12 is combined with the tenon receiving portion 24 provided at the lower end portion of the upper column member 14 so as to be movable relative to each other in the horizontal direction or in the horizontal direction (combining step). That is, the connecting portion 62 </ b> A provided at the upper end portion of the lower column member 12 is inserted into the notch portion 66 </ b> C formed at the lower end portion of the upper column member 14. At the same time, the connecting portions 66 </ b> A and 66 </ b> B provided at the lower end portion of the upper column member 14 are inserted into the notches 62 </ b> B and 62 </ b> C formed at the upper end portion of the lower column member 12.

  At this time, the installation height of the upper column member 14 is set so that the center of the connection hole 64 formed in the lower column member 12 and the center of the connection holes 68 and 70 formed in the upper column member 14 substantially coincide with each other. The bolts provided in the vicinity of the four corners of the bottom surfaces P and Q of the notches 62B and 62C are adjusted in advance.

  Next, the rod-shaped reinforcing bars 28 as connecting means are inserted into the connecting holes 70, 64, 68, and the reinforcing bars 28 are arranged so as to straddle the connecting parts 66B, 62A, 66A. The tenon receiving part 66 is connected (connection process).

Next, As shown in FIG. 12, the gap _T within ₁ formed between the tenon receiving portion 66 of the tenon 62 and the upper pillar member 14 of the lower column member 12, and the connecting holes 64, 68, 70 and reinforcing bars the first embodiment and the same hardener W filled in the gap T a ₂ formed between the 28, fixing the reinforcing bar 28 to the lower column member 12 and the upper pillar member 14 by curing this curing agent W Then, the lower column member 12 and the upper column member 14 are joined.
For convenience of explanation, only one reinforcing bar 28 is shown in FIG. 10, but the reinforcing bar 28 is inserted into all the connecting holes 70, 64, 68.

  Next, operations and effects of the PCa pillar member joining structure and the PCa pillar member joining method according to the third embodiment of the present invention will be described.

  As shown in FIG. 10, when the upper column member 14 is placed on the lower column member 12, the tenon receiving portion 66 is combined with the tenon portion 62 so as to be capable of relative movement in the horizontal direction or the horizontal direction. The upper column member 14 placed thereon can be moved in the horizontal direction or in the horizontal direction.

Therefore, after the upper column member 14 is placed on the lower column member 12, the position of the upper column member 14 can be adjusted in order to improve the construction accuracy.
Further, the tenon portion 62 provided at the end portion of the lower column member 12 serves as a guide when the tenon receiving portion 66 provided at the lower end portion of the upper column member 14 is combined, so that it is placed on the lower column member 12. It is easy to align the upper column member 14 to be in a predetermined position, which contributes to improvement of the construction accuracy.

Further, since the reinforcing bar 28 as the connecting means is inserted into the connecting holes 64, 68, 70 formed in the tenon portion 62 and the tenon receiving portion 66, the lower column member 12 and the upper column member 14 are joined. Thus, the lower column member 12 and the upper column member 14 can be reliably joined together.
Further, even when the upper column member 14 is placed on the lower column member 12 and the tenon portion 62 and the tenon receiving portion 66 are not yet connected by the reinforcing bar 28, the groove (notch portion) of the tenon receiving portion 66 is also provided. 66C) has a joining structure in which the connecting portion 62A of the tenon portion 62 is inserted, so that the upper column member 14 is unlikely to fall down. Thereby, the safety of construction can be improved.

  In any of the first to third embodiments, the tenon portions 16 and 62 are provided at the upper end portion of the lower column member 12 and the tenon receiving portions 20 and 66 are provided at the lower end portion of the upper column member 14. Although shown, the tenon portions 16 and 62 may be provided at the lower end portion of the upper column member 14 and the tenon receiving portions 20 and 66 may be provided at the upper end portion of the lower column member 12.

  In the first to third embodiments, the horizontal cross-sectional shapes of the lower column member 12 and the upper column member 14 are the same, but the horizontal cross-sectional shapes of the lower column member 12 and the upper column member 14 are different. It may be. For example, the upper column member 14 whose horizontal cross-sectional shape is smaller than the horizontal cross-sectional shape of the lower column member 12 may be placed on the lower column member 12.

  In the first and second embodiments, the example in which the connecting portion 16A and the connecting portion 20A have the same shape has been described, but the shapes of the connecting portion 16A and the connecting portion 20A may be different. For example, in the length direction of the connecting holes 18 and 22, the length of the connecting portion 16A may be larger than the length of the connecting portion 20A.

  In the third embodiment, the example in which the connecting portion 66A (the notch portion 62B) and the connecting portion 66B (the notch portion 62C) have the same shape is shown. However, the connecting portions 66A, 66B, and 62A are all The same shape may be used, or different shapes may be used. For example, in the length direction of the connecting holes 64, 68, 70, the length of the connecting portion 66A is made equal to the length of the connecting portion 62A, and the length of the connecting portion 66B is made larger than the length of the connecting portion 66A. Good.

  In the third embodiment, an example in which one groove (notch portion 66C) is formed in the lower end portion of the upper column member 14 is shown. However, a plurality of grooves are formed in the lower end portion of the upper column member 14, A number of connecting portions corresponding to the grooves may be provided at the upper end portion of the lower column member 12, and the connecting portions may be inserted into the grooves.

  Further, the connecting portions 16A and 20A shown in the first and second embodiments and the connecting surfaces of the connecting portions 62A, 66A and 66B shown in the third embodiment (the connecting portions in the length direction of the connecting holes 22 and 18). 16A, the inner side surface of 20A, the inner side surface of the connecting portions 66A, 66B in the length direction of the connecting holes 64, 68, 70, the outer side surface of the connecting portion 62A in the length direction of the connecting holes 64, 68, 70) It is preferable to provide a cotter because the bonding strength between the cured hardened material W and the connecting portion is increased after the hardened material W is filled.

Moreover, in any of the first to third embodiments, an example in which the connection holes 18, 22, 34, 38, 64, 68, and 70 are formed substantially horizontally is shown, but the connection holes are formed obliquely. May be.
Further, the connection holes 18, 22, 64, 68, 70 shown in the first or third embodiment may be formed by embedding a tube material such as a sheath tube, as long as a hole into which the reinforcing bar 28 can be inserted is formed. Alternatively, the hole may be formed by arranging a cylindrical member at a position where the hole is formed and removing the cylindrical member after the concrete is hardened. Moreover, you may form a hole by perforation.
Further, the arrangement and number of the connecting holes 18, 22, 34, 38, 64, 68, 70 shown in any of the first to third embodiments may be determined as appropriate according to the required bonding strength. .

  Further, the connecting means shown in the first and third embodiments includes a tenon portion and a tenon receiving portion (the tenon portion 16 and the tenon receiving portion 20 of the first embodiment, and the tenon portion 62 and the tenon of the third embodiment. What is necessary is just to be able to reliably connect the receiving portion 66). If the connecting means is a deformed reinforcing bar, the adhesion area when the hardening material W is filled increases, which is preferable.

The connecting means of the first and third embodiments may be a PC steel rod. In this case, a PC steel rod is inserted into the connecting holes (the connecting holes 18 and 22 of the first embodiment, the connecting holes 64, 68 and 70 of the third embodiment), and the assembled tenon and tenon Prestress is applied to the receiving portions (tenon portion 16 and tenon receiving portion 20 of the first embodiment, tenon portion 62 and tenon receiving portion 66 of the third embodiment).
Thereby, the compressive force which acts on the joint surface of a tenon part and a tenon receiving part increases, and it becomes possible to perform the shear transmission by friction reliably. Therefore, the lower pillar member 12 and the upper pillar member 14 can be firmly joined.

Moreover, it is good also considering the connection means of 3rd Embodiment as the bolt member 40 of 2nd Embodiment. In this case, for example, the long nut 36 is provided in the connecting portion 66A of the upper pillar member 14, the steel pipe 32 is provided in the connecting portion 66B of the upper pillar member 14, and the bolt member 40 is inserted into the connecting holes 34, 64, 38. You just have to do it.
Moreover, what is necessary is just to use the grout material generally used for the hardening material W shown by the 1st-3rd embodiment, and mortar, an epoxy resin, etc. can be used.

  In any of the first to third embodiments, the bottom surface H of the notch 16B provided on the upper end surface of the lower column member 12, or the notch 62B provided on the upper end surface of the lower column member 12. Although the example which provided the volt | bolt which adjusts the installation height of the upper pillar member 14 in the bottom face P and Q of 62C was shown, not only this but the upper pillar member 14 mounted on the lower pillar member 12 is shown. Any device that can adjust the installation height may be used. Further, the bolts may be eliminated so that the end surfaces of the lower column member 12 and the upper column member 14 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 the first and third embodiments, the column reinforcement and the shear reinforcement provided in the lower column member 12 and the upper column member 14 are omitted for convenience of explanation, but the column reinforcement and the shear reinforcement are Depending on the strength required for each column member, the arrangement, shape and the like may be determined and provided as appropriate. Moreover, what is necessary is just to determine suitably the arrangement | positioning, shape, etc. of the column reinforcement 54 and the shear reinforcement 58 shown by 2nd Embodiment according to the intensity | strength calculated | required by each member.

  Further, the PCa column member joining structures 10, 30, and 60 shown in any of the first to third embodiments may be used for a part of a building or for all of them. By constructing a building using the joint structure of these PCa members, a building with improved construction quality can be constructed. The PCa column member joining structures 10, 30, and 60 are preferably used for joining at the inflection point of the column member having a small bending moment.

As described above, the PCa column member joining structures 10, 30, and 60 shown in the first to third embodiments have the precast concrete upper column member placed on the precast concrete lower column member in the horizontal direction or the horizontal direction. Can be moved to.
Further, when two column beam structures in which the PCa column member placed on the lower column member and the PCa beam member are integrated are arranged next to each other and the PCa beam members of the column beam structure are joined together, If the joint structure 10, 30, 60 of the PCa column member is applied to the joint structure of the lower column member and the PCa column member of the column beam structure, the column beam structure can be moved vertically, horizontally, or horizontally. Various beam member joining methods for joining the PCa beam members of the column beam structure can be used.

  The PCa column member joining structures 10, 30, and 60 are mounted when the PCa column member of the column beam structure is placed on the lower column member and the PCa column member of the column beam structure is placed on the lower column member. Later, since the column beam structure (PCa column member of the column beam structure) can be moved horizontally or horizontally, the column beam structure can be moved horizontally or horizontally to connect the PCa beam members of the column beam structure to each other. This is particularly effective when bonding.

In such a method of joining the PCa beam members by laterally or horizontally moving the PCa column members, the end surfaces of the beam members are brought into close contact with each other (see FIG. 14), or between the end surfaces of the beam members. A small gap can be formed between them.
That is, it becomes possible to eliminate the work (see FIG. 13) for post-casting concrete at the joint portion between the PCa beam members, and the workability can be improved.

  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 joining structure of the precast concrete pillar member which concerns on the 1st Embodiment of this invention. It is a front view which shows the joining structure of the precast concrete pillar member which concerns on the 1st Embodiment of this invention. It is a side view which shows the joining structure of the precast concrete pillar member which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the joining structure of the precast concrete pillar member which concerns on the 2nd Embodiment of this invention. It is a front view which shows the joining structure of the precast concrete pillar member which concerns on the 2nd Embodiment of this invention. It is AA sectional drawing of FIG. It is explanatory drawing which shows the steel pipe and fixing bracket which concern on the 2nd Embodiment of this invention. It is explanatory drawing which shows the long nut and fixing bracket which concern on the 2nd Embodiment of this invention. It is explanatory drawing which shows the reinforcing bar which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the joining structure of the precast concrete pillar member which concerns on the 3rd Embodiment of this invention. It is a top view which shows the joining structure of the precast concrete pillar member which concerns on the 3rd Embodiment of this invention. It is a side view which shows the joining structure of the precast concrete pillar member which concerns on the 3rd Embodiment of this invention. It is explanatory drawing which shows the column beam junction structure of the conventional building. It is explanatory drawing which shows the column beam junction structure of the conventional building.

Explanation of symbols

10, 30, 60 Precast concrete column member joint structure 12 Lower column member 14 Upper column member 16, 62 Tenon portion 18, 22, 38, 44, 64, 68, 70 Connection hole 20, 66 Tenon receiving portion 28 Reinforcing bar (connection) means)
40 Bolt member (connection means)

Claims (10)

A lower column member formed of precast concrete;
An upper column member formed of precast concrete and placed on the lower column member;
A tenon provided at an end of the lower column member or an end of the upper column member;
A mortise receiving portion provided at an end of the upper column member or an end of the lower column member, and combined with the tenon so as to be relatively movable in a lateral direction or a horizontal direction,
A connecting means for connecting the tenon portion and the tenon receiving portion in a combined state;
A joint structure of precast concrete column members characterized by comprising:   The tenon portion has a connecting portion provided to protrude from an end portion of the lower column member or an end portion of the upper column member, and the tenon receiving portion is an end portion of the upper column member or the lower column member The joint structure for precast concrete column members according to claim 1, further comprising a groove formed at an end portion of the joint and into which the connecting portion is inserted. The connecting means includes
The joint structure for precast concrete column members according to claim 1 or 2, wherein the joint structure is a reinforcing bar inserted into a connecting hole formed in the tenon portion and the tenon receiving portion. The connecting means includes
2. A PC steel rod which is inserted into a coupling hole formed in the tenon portion and the tenon receiving portion and prestresses the tenon portion and the tenon receiving portion in a combined state. Or the junction structure of the precast concrete pillar member of 2 description. The connecting means includes
3. The precast concrete according to claim 1, wherein the precast concrete is a bolt member that is inserted into a connecting hole formed in the tenon portion and the tenon receiving portion and connects the tenon portion and the tenon receiving portion. Column member joining structure. In the joining method of the precast concrete column member that joins the lower column member formed of the precast concrete and the upper column member formed of the precast concrete and placed on the lower column member,
The tenon provided at the end of the lower column member or the end of the upper column member is horizontally or horizontally placed on the tenon receiving portion provided at the end of the upper column member or the end of the lower column member. A combination process that is combined with each other so as to be relatively movable,
A connecting step of connecting the tenon portion and the tenon receiving portion in a combined state by a connecting means;
A method for joining precast concrete column members, comprising:   The tenon portion has a connecting portion provided to protrude from an end portion of the lower column member or an end portion of the upper column member, and the tenon receiving portion is an end portion of the upper column member or the lower column member The method for joining precast concrete column members according to claim 6, further comprising a groove that is formed at an end of the groove and into which the connecting portion is inserted. The connecting means includes
The method for joining precast concrete column members according to claim 6 or 7, wherein the tenon and the tenon receiving part are reinforcing bars inserted into connection holes formed in the tenon receiving part. The connecting means includes
7. A PC steel rod that is inserted into a coupling hole formed in the tenon portion and the tenon receiving portion and prestresses the tenon portion and the tenon receiving portion in a combined state. Or a precast concrete column member joining method according to 7; The connecting means includes
The precast concrete according to claim 6 or 7, wherein the precast concrete is a bolt member that is inserted into a connection hole formed in the tenon portion and the tenon receiving portion and connects the tenon portion and the tenon receiving portion. Column member joining method.

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