JP2018087489A - Column-beam joining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column-beam joining method instead of the post-cast concrete installation for joining girders in a column-beam of a reinforced-concrete structure using a precast concrete member.SOLUTION: An article made by dropping a column member 12 from above a column-beam connection member 14a, inserting a reinforcing bar 18 for the column member 12 into a through hole of the column-beam connection member 14a, and joining the column-beam connection member 14a and the column member 12 by a continuous suspension member 38 is constructed as an integrated object in advance, and the integrated object is moved from the lateral side of a beam member 16a and the reinforcing bar 24 of the column-beam connection member 14a of the integrated object is inserted from the lateral side into an insertion hole 26 of the beam member 16a.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a column beam connection structure in a reinforced concrete (RC) structure such as a super high-rise apartment building, a frame structure having this connection structure, and a column beam connection method, and in particular, precast concrete (hereinafter referred to as PCa). The present invention relates to a column beam connection structure, a frame structure, and a column beam connection method made of manufactured columns and beam members.

  Conventionally, in the construction of a super high-rise RC apartment building by the so-called “out-frame method” in which a frame (frame) such as columns and beams is taken out of the room, as shown in FIG. The construction method using the PCa large beam 2 and the PCa pillar 3 integrated with each other is adopted.

The case where a column beam member is constructed by this conventional method will be described.
First, in the case of the outer periphery of the building, as shown in FIG. 8, above the lower PCa column 3 that has been installed in advance by forward insertion (inserting a joint from the top to where the reinforcing bar protrudes from the bottom). From the above, the joint integrated PCa beam 2 is dropped. In this case, the rebar 3a protruding upward from the upper surface of the PCa column 3 is passed through the through hole 2b provided in the joint portion 2a of the PCa large beam 2 and dropped. Subsequently, another PCa pillar 3 is dropped from above the joint portion 2a. In this case, the tip of the reinforcing bar 3a is dropped into a hole (not shown) provided on the lower surface of the PCa column 3 so as to be dropped. Then, after reinforcing bars 5 protruding from adjacent PCa large beams 2 are joined to each other by mechanical joints, post-cast concrete is placed and joined to the portion 4 between the large beam portions 2c.

  Moreover, in the case of the inside of a building, as shown in FIG. 9, the joint integrated half PCa girder 6 is dropped from the upper side of the lower PCa pillar 3 that is installed in advance by forward insertion. In this case, the reinforcing bar 3a protruding upward from the upper surface of the PCa column 3 is passed through the through hole 6b provided in the joint portion 6a of the PCa large beam 6 and dropped. Here, on the upper surface of the half PCa girder 6, as shown in FIG. Subsequently, another PCa pillar 3 is dropped from above the joint portion 6a. In this case, the tip of the reinforcing bar 3a is dropped into a hole (not shown) provided on the lower surface of the PCa column 3 so as to be dropped. After that, the reinforcing bars 5 protruding from the adjacent half PCa large beams 6 are joined to each other by a mechanical joint, and then the post-cast concrete is placed in the portions 8 and 4 between the large beam portions 6c.

  However, as shown in FIGS. 8 and 9, in this construction method, the main beam main bar 5 becomes a span center joint, and therefore, a construction portion 4 is formed in which concrete is post-placed at a joint portion between adjacent large beams. In the entire plane, as shown by the black portions in FIG. 11, a large number of post-working portions 4 are produced, but the outer peripheral beam in the “out-frame method” is often a reverse beam, Construction of large beam joints with concrete has been a major issue in terms of workability, construction period, and finished quality.

  On the other hand, a column beam joining method as shown in Patent Document 1 is known. In this method, the PCa beam with the end of the beam reinforcement projecting horizontally from the end face is moved in the horizontal direction, and the beam reinforcement of the PCa beam is attached to the joint for connecting the beam reinforcement embedded in the PCa joint panel member. How to insert. However, in this method, it is necessary to grout the PCa joint panel member for the column main bar and the beam main bar.

Japanese Patent No. 3837390

  In the above-described conventional method for constructing column beam members, there has been a demand for the development of a frame construction method that can replace the construction of post-cast concrete when joining large beams, and that also enables full precasting of the outer peripheral portion. Further, it has been demanded to improve the workability with respect to the grout construction at the joint.

  The present invention has been made in view of the above, and in a column beam of a reinforced concrete structure using a precast concrete member, a column beam joint structure that replaces the construction of post-cast concrete for joining large beams, An object of the present invention is to provide a frame structure and a method for joining column beams.

  In order to solve the above-described problems and achieve the object, the column beam connection structure according to the present invention is a column beam connection structure of a reinforced concrete structure, and is a precast having a reinforcing bar protruding downward from the lower surface. Column beam joint member made of precast concrete having a pillar member made of concrete, a through-hole penetrating the inside in the vertical direction, and a reinforcing bar protruding in the left-right direction from the side end surface, and from the end surfaces on both the left and right sides, respectively. A beam member made of precast concrete having an insertion hole extending in the left-right direction toward the left and right, and the reinforcing bars of the column beam joint member are inserted and arranged in the insertion holes on both sides of the beam member, respectively. The reinforcing bar of the column member is inserted and arranged in the through hole.

  In addition, in the above-described invention, the column member further includes an insertion hole extending in the vertical direction from the upper surface thereof toward the inside, and protrudes below the column member. The reinforcing bar penetrates the through hole of the column beam joint member and is inserted and arranged in the insertion hole on the upper surface of another column member arranged below the column beam joint member. To do.

  Further, another column beam connection structure according to the present invention is characterized in that, in the above-described invention, post-cast concrete is provided on the upper surface of the beam member.

  The frame structure according to the present invention is a frame structure having the above-described column beam joint structure.

  Further, the column beam joining method according to the present invention is a column beam joining method of a reinforced concrete structure, wherein the column beam is a column member made of precast concrete having a reinforcing bar protruding downward from the lower surface, Column beam joint member made of precast concrete with a through-hole penetrating the inside in the vertical direction and a reinforcing bar protruding in the left-right direction from the side end face, and an insertion extending in the left-right direction from the left and right end faces toward the inside The beam member is made of precast concrete having a hole, and the column beam joint member is moved from the side of the beam member so that the reinforcing bar of the column beam joint member is inserted into the beam member insertion hole. The column member is inserted from the side, and then the column member is dropped from above the column beam joint member, and the reinforcing bar of the column member is inserted into the through hole of the column beam joint member.

  Another column beam joining method according to the present invention is a column beam joining method for a reinforced concrete structure, wherein the column beam is a column member made of precast concrete having a reinforcing bar protruding downward from the lower surface. And a column beam joint member made of precast concrete having a through-hole penetrating the inside in the vertical direction and a reinforcing bar protruding in the left-right direction from the side end surface, and from the left and right end surfaces to the inside in the left-right direction The beam member is made of precast concrete having an insertion hole extending, and the column member is dropped from above the column beam joint member, and the reinforcing bar of the column member is placed in the through hole of the column beam joint member. The beam member is inserted and arranged, and then the beam member is moved from the side of the column beam joint member, and the insertion hole of the beam member is fitted into the reinforcing bar of the column beam joint member.

  In addition, in the above-described invention, the column member further includes an insertion hole extending in the vertical direction from the upper surface toward the inside in the above-described invention. When the column member is dropped from above, the rebar of the column member passes through the through-hole of the column beam joint member, and the upper surface of another column member disposed below this column beam joint member. The insertion hole is inserted and arranged.

  Another column beam joining method according to the present invention is a column beam joining method for a reinforced concrete structure, wherein the column beam is a column member made of precast concrete having a reinforcing bar protruding downward from the lower surface. And a column beam joint member made of precast concrete having a through-hole penetrating the inside in the vertical direction and a reinforcing bar protruding in the left-right direction from the side end surface, and from the left and right end surfaces to the inside in the left-right direction The beam member is made of precast concrete having an insertion hole extending, and the column member is dropped from above the column beam joint member, and the reinforcing bar of the column member is placed in the through hole of the column beam joint member. Inserting and connecting the column beam joint member and the column member with the continuous suspension member is constructed in advance as an integrated object, and this integrated object is moved from the side of the beam member to Characterized by inserting the rebar in Column Joint member integral body from the side to the entry apertures.

  According to the column beam joint structure of the present invention, the column beam joint structure of the reinforced concrete structure is a column member made of precast concrete having a reinforcing bar projecting downward from the lower surface, and the interior in the vertical direction. Precast concrete made of precast concrete with penetrating through-holes and reinforcing bars protruding in the left-right direction from the side end face, and precast with insertion holes extending in the left-right direction from the left and right end faces to the inside. The beam member is made of concrete, and the reinforcing bars of the column beam joint member are inserted and arranged in the insertion holes on both sides of the beam member, respectively, and the reinforcing bars of the column member are inserted and arranged in the through holes of the column beam joint member. Therefore, both sides of the beam member are directly joined to the column beam joint member, and there is no portion for joining the beam members. Therefore, according to the present invention, there is an effect that it is possible to eliminate the need for post-cast concrete for joining the large beams. In addition, there is an effect that the outer peripheral portion of the structure can be made full precast.

  Moreover, according to the other column beam joint structure according to the present invention, the column member further includes an insertion hole extending in the vertical direction from the upper surface toward the inside thereof, and the reinforcing bar protrudes below the column member. Is inserted and arranged in the insertion hole on the upper surface of another column member disposed below the column beam joint member through the through hole of the column beam joint member. There is an effect that the upper column member and the lower column member can be joined to each other.

  In addition, according to the other column beam joint structure according to the present invention, since the post-cast concrete is provided on the upper surface of the beam member, there is an effect that it is suitable for the column beam member inside the building.

  Further, according to the frame structure according to the present invention, since the frame structure has the above-mentioned column beam joint structure, it is suitable for a frame structure such as a super high-rise RC apartment house building having many column beam joint structures. There is an effect.

  The column beam joining method according to the present invention is a method for joining column beams of a reinforced concrete structure, wherein the column beam is made of precast concrete having a reinforcing bar protruding downward from the lower surface. And a column beam joint member made of precast concrete having a through-hole penetrating the inside in the vertical direction and a reinforcing bar protruding in the left-right direction from the side end surface, and from the left and right end surfaces to the inside in the left-right direction And a beam member made of precast concrete having an extending insertion hole, the column beam joint member is moved from the side of the beam member, and the column beam coupling member is inserted into the beam member insertion hole. Insert the reinforcing bar from the side, and then drop the column member from above the column beam joint member and insert the reinforcing bar of the column member into the through hole of the column beam coupling member. Will be directly bonded to the Joint members, the portion joining the beam member to each other is not present. Therefore, according to the present invention, there is an effect that it is possible to eliminate the need for post-cast concrete for joining the large beams. In addition, there is an effect that the outer peripheral portion of the structure can be made full precast.

  Further, according to another method for joining column beams according to the present invention, the column beam joining method for a reinforced concrete structure is made of precast concrete having a reinforcing bar protruding downward from the lower surface. Column beam joint member made of precast concrete having a column member, a through-hole penetrating the inside in the vertical direction, and a reinforcing bar protruding in the left-right direction from the side end surface, and left and right from the end surfaces on both sides toward the inside And a beam member made of precast concrete having an insertion hole extending in a direction. The column member is dropped from above the column beam joint member, and the column member is inserted into the through hole of the column beam joint member. After inserting the reinforcing bar, move the beam member from the side of this column beam joint member, and fit the beam member insertion hole into the reinforcing bar of the column beam coupling member. Pillar Will be directly bonded to the Joint members, the portion joining the beam member to each other is not present. Therefore, according to the present invention, there is an effect that it is possible to eliminate the need for post-cast concrete for joining the large beams. In addition, there is an effect that the outer peripheral portion of the structure can be made full precast.

  Moreover, according to the other column beam joining method according to the present invention, the column member further has an insertion hole extending in the vertical direction from its upper surface toward the inside, and the column member is formed from above the column beam joint member. When the member is dropped, the insertion hole on the upper surface of another column member that is arranged below the column beam joint member through the through hole of the column beam joint member through the rebar of the column member Therefore, the upper column member and the lower column member can be joined via the column beam joint member.

  Further, according to another method for joining column beams according to the present invention, the column beam joining method for a reinforced concrete structure is made of precast concrete having a reinforcing bar protruding downward from the lower surface. Column beam joint member made of precast concrete having a column member, a through-hole penetrating the inside in the vertical direction, and a reinforcing bar protruding in the left-right direction from the side end surface, and left and right from the end surfaces on both sides toward the inside And a beam member made of precast concrete having an insertion hole extending in a direction. The column member is dropped from above the column beam joint member, and the column member is inserted into the through hole of the column beam joint member. The rebar is inserted, and the column beam joint member and the column member connected by the continuous suspension member are built in advance as an integrated object, and this integrated object is moved from the side of the beam member to Since inserting the rebar in Column Joint member integral body from the side to the insertion hole of the timber, an effect that it is possible to reduce the lifting load member.

FIG. 1 is a diagram showing an embodiment of a column beam joining structure and a column beam joining method according to the present invention, and is a front view showing a construction example of column beam members on the outer periphery of a building. FIG. 2 is a diagram showing an embodiment of a column beam joining structure and a column beam joining method according to the present invention, and is a front view showing a construction example of a column beam member inside a building. FIG. 3 is a plan view showing an embodiment of the frame structure according to the present invention. FIG. 4 is a plan view showing another embodiment of the frame structure according to the present invention. FIG. 5-1 is a diagram of step 1 showing an embodiment of a column beam joining structure, a frame structure, and a column beam joining method according to the present invention. FIG. 5-2 is a diagram of step 2 illustrating an embodiment of a column beam joining structure, a frame structure, and a column beam joining method according to the present invention. FIG. 5-3 is a diagram of step 3 illustrating an embodiment of a column beam joining structure, a frame structure, and a column beam joining method according to the present invention. FIG. 6 is a diagram showing another embodiment of a column beam joining structure, a frame structure, and a column beam joining method according to the present invention. FIG. 7 is a perspective view showing an example of a construction situation of a building for a super high-rise RC apartment house by a conventional out-frame construction method. FIG. 8 is a front view showing a construction example of column beam members on the outer periphery of a building by a conventional out-frame method. FIG. 9 is a front view showing a construction example of a column beam member inside a building by a conventional out-frame method. FIG. 10 is a partial perspective view of the half PCa girder. FIG. 11 is a plan view showing an example of assignment of PCa members by a conventional out-frame method.

  Embodiments of a column beam joining structure, a frame structure, and a column beam joining method according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

[Column beam connection structure and method]
A column beam joining structure and a column beam joining method according to the present invention will be described.
(Embodiment 1: The outer periphery of a building)
First, as Embodiment 1 of the present invention, a case where the present invention is applied to a column beam at the outer peripheral portion of a building will be described. FIG. 1 is a front view showing a construction example of a column beam on the outer periphery of a building by a column beam joining method according to the present invention, which is grasped as a schematic exploded view of a column beam junction structure according to the present invention. is there. The building is assumed to be a reinforced concrete structure such as a super high-rise RC apartment house.

  As shown in FIG. 1, a column beam joining structure 10 according to the present invention includes a column member 12, a column beam joint member 14, and a beam member 16. The column member 12, the column beam joint member 14, and the beam member 16 are all configured as rectangular parallelepiped precast concrete (PCa).

  The column member 12 has a column main reinforcement 18 (rebar) that protrudes downward from the lower surface, and an insertion hole 20 that extends in the vertical direction from the upper surface to the inside. The column beam joint member 14 has a through-hole 22 that penetrates the inside in the vertical direction and a beam main bar 24 (rebar) that protrudes in the left-right direction from the side end face. The beam main bars 24 are arranged so as to penetrate the inside of the column beam joint member 14. The beam member 16 has insertion holes 26 extending in the left-right direction from the end surfaces on the left and right sides toward the inside.

  In the method of constructing the column beam joining structure 10 (column beam joining method of the present invention), first, the column beam joint member 14A (14) is moved with respect to the existing left beam member 16A (16). Then, the beam main bar 24 protruding leftward from the column beam joint member 14A (14) is engaged with the insertion hole 26 of the beam member 16A (16). A mechanical joint (not shown) is inserted in advance in the insertion hole 26 of the beam member 16A (16), and the inserted beam main bar 24 is engaged with the mechanical joint.

  Next, the column member 12A (12) is dropped, and the column main reinforcement 18 of the column member 12A (12) is inserted into the through hole 22 of the column beam joint member 14A (14). Subsequently, the beam member 16B (16) on the opposite side is moved to the column beam joint member 14A (14), and the beam main bar 24 protruding rightward from the column beam joint member 14A (14) is moved to the beam member 16B ( 16) is engaged with the insertion hole 26 of FIG. Thereafter, the through hole 22 of the column beam joint member 14A (14) is filled with grout, and the joint surface between the column member 12A (12) and the column beam joint member 14A (14) is also filled with grout. Finally, the grout is filled into the insertion holes 26 of the beam members 16A and 16B (16), and the grout is also filled into the joint surface between the beam members 16A and 16B (16) and the column beam joint member 14A (14). . The beam member 16C (16), the column beam joint member 14B (14), and the column member 12B (12) on the right side of FIG.

  As a result, the beam main reinforcement 24 of the column beam joint member 14 is inserted and arranged in the insertion holes 26 on both sides of the beam member 16, and the column main reinforcement of the column member 12 is inserted in the through hole 22 of the column beam connection member 14. 18 is inserted and arranged. The column main reinforcement 18 projecting downward from the column member 12 passes through the through hole 22 of the column beam joint member 14, and is formed on the upper surface of another column member 12 disposed below the column beam joint member 14. It is inserted and arranged in the insertion hole 20. Accordingly, the upper column member 12 and the lower column member 12 are joined via the column beam joint member 14. In this way, the column beam joining structure 10 can be constructed.

  In addition, another method for constructing the column beam joint structure 10 (column beam junction method of the present invention) is first a column beam joint member 14A (14) with respect to the existing left beam member 16A (16). Is moved to engage the beam main bar 24 protruding leftward from the column beam joint member 14A (14) with the insertion hole 26 of the beam member 16A (16). A mechanical joint (not shown) is inserted in advance in the insertion hole 26 of the beam member 16A (16), and the inserted beam main bar 24 is engaged with the mechanical joint.

  Next, the beam member 16B (16) on the opposite side is moved to the column beam joint member 14A (14), and the beam main bar 24 protruding rightward from the column beam joint member 14A (14) is moved to the beam member 16B ( 16) is engaged with the insertion hole 26 of FIG. Subsequently, the column member 12A (12) is dropped, and the column main reinforcement 18 of the column member 12A (12) is inserted into the through hole 22 of the column beam joint member 14A (14). Thereafter, the through hole 22 of the column beam joint member 14A (14) is filled with grout, and the joint surface between the column member 12A (12) and the column beam joint member 14A (14) is also filled with grout. Finally, the grout is filled into the insertion holes 26 of the beam members 16A and 16B (16), and the grout is also filled into the joint surface between the beam members 16A and 16B (16) and the column beam joint member 14A (14). . The beam member 16C (16), the column beam joint member 14B (14), and the column member 12B (12) on the right side of FIG. Also by such a method, the column beam joint structure 10 can be constructed.

  In any of the above methods, both sides of the beam member 16 are directly joined to the column beam joint member 14, and there is no portion for joining the beam members 16. Therefore, according to the first embodiment, it is possible to eliminate the need for post-cast concrete for joining the large beams. Moreover, full precasting of the outer peripheral part of the structure can be made possible. Further, according to the first embodiment, since the grout construction for the column beam joint member 14 is only required for the through hole 22 for the column main reinforcement, the PCa joint panel member as shown in Patent Document 1 is used. Compared to the method of performing grout construction for both the column main bar and the beam main bar, it is easier to install. Since the grout flows downward with its own weight, the through hole for the column main reinforcing bar, which is a vertical hole, can ensure a higher filling property than the through hole for the beam main reinforcing bar, which is a horizontal hole. By making the through hole of the joint panel member only for the column main reinforcing bars, it is possible to construct the grout construction of the through hole in the joint part while ensuring high fillability.

(Embodiment 2: Inside the building)
Next, a case where the present invention is applied to a column beam inside a building will be described as a second embodiment of the present invention. FIG. 2 is a front view showing a construction example of a column beam inside a building by the column beam joining method according to the present invention, which is grasped as a schematic exploded view of the column beam joint structure according to the present invention. .

  As shown in FIG. 2, the column beam joining structure 10a according to the present invention includes a column member 12, a column beam joint member 14a, and a beam member 16a, as in the first embodiment. The column member 12, the column beam joint member 14a, and the beam member 16a are all configured as rectangular parallelepiped precast concrete (PCa).

  The column member 12 includes a column main reinforcement (rebar) 18 that protrudes downward from the lower surface, and an insertion hole 20 that extends in the vertical direction from the upper surface toward the inside. The column beam joint member 14a has a through hole 22 that penetrates the inside in the vertical direction, and a beam main bar 24 (rebar) that protrudes in the horizontal direction from the side end face. The beam main reinforcement 24 is disposed so as to penetrate the inside of the column beam joint member 14a. The beam member 16a has insertion holes 26 extending in the left-right direction from the end surfaces on the left and right sides toward the inside.

  Here, since the beam member 16a and the column beam joint member 14a are used for the column beam inside the building, the height in the vertical direction is higher than that in the case of the first embodiment (outer peripheral portion of the building). When the beam member 16a and the column beam joint member 14a are joined to each other, the upper surface of the beam member 16a is lower than the upper surface of the column beam joint member 14a so that the space for the post-cast concrete 28 is obtained. Are formed, and the lower surface of the column beam joint member 14a and the lower surface of the beam member 16a are substantially flush with each other.

  The method of constructing the column beam joining structure 10a (the column beam joining method of the present invention) is basically the same as that of the above-described first embodiment. First, the column beam finishing is performed from the side of the beam member 16a. The mouth member 14a is moved to insert the beam main reinforcement 24 of the column beam joint member 14a from the side into the insertion hole 26 of the beam member 16a. Here, a mechanical joint (not shown) is inserted in advance in the insertion hole 26 of the beam member 16a, and the inserted beam main bar 24 is engaged with the mechanical joint. Subsequently, the column member 12 is dropped from above the column beam joint member 14a, and the column main bars 18 of the column member 12 are inserted into the through holes 22 of the column beam joint member 14a. Thereafter, the through hole 22 of the column beam joint member 14a is filled with grout, and the joint surface between the column member 12 and the column beam joint member 14a is also filled with grout. Finally, the grout is filled into the insertion hole 26 of the beam member 16a, and the grout is also filled into the joint surface between the beam member 16a and the column beam joint member 14a.

  As a result, the beam main bars 24 of the column beam joint member 14a are inserted into the insertion holes 26 on both sides of the beam member 16a, and the column main bars of the column member 12 are inserted into the through holes 22 of the column beam joint member 14a. 18 is inserted and arranged. The column main reinforcement 18 projecting downward from the column member 12 passes through the through hole 22 of the column beam joint member 14a, and is formed on the upper surface of another column member 12 disposed below the column beam joint member 14a. It is inserted and arranged in the insertion hole 20. Thereby, the upper column member 12 and the lower column member 12 are joined via the column beam joint member 14a.

  Here, post-cast concrete 28 is placed on the upper surface of the beam member 16a at a predetermined time after the beam member 16a is joined to the column beam joint member 14a. In addition, although the stirrup 29 is previously driven in the upper surface part of the beam member 16a, the beam main bar | burr 30 is arranged in the upper surface part of the beam member 16a before concrete placement. In this manner, the column beam joint structure 10a can be constructed.

  Further, another method for constructing the column beam joint structure 10a (column beam joint method of the present invention) is to first drop the column member 12 from above the column beam joint member 14a, and then the column beam joint member 14a. The column main reinforcing bars 18 of the column member 12 are inserted into the through holes 22. Thereafter, the beam member 16a is moved from the side of the column beam joint member 14a, and the insertion hole 26 of the beam member 16a is fitted into the beam main reinforcing bar 24 of the column beam joint member 14a. Also by such a method, the column beam joint structure 10a can be constructed.

  In any of the above methods, both sides of the beam member 16a are directly joined to the column beam joint member 14a, and there is no portion for joining the beam members 16a. Therefore, according to the second embodiment, it is possible to eliminate the need for post-cast concrete for joining the large beams.

[Frame structure]
Next, the frame structure according to the present invention will be described.
FIG. 3 is a plan view of a building having a column beam joint structure (beam members 16, 16a, column beam joint members 14, 14a) according to the present invention. FIG. 4 is a plan view of a building having the above-mentioned conventional beam-column joint structure (joint-integrated PCa large beam 2) and the beam-column joint structure of the present invention. 3 and 4 are grasped as plan views of the frame structure according to the present invention, since both have the column beam joint structure of the present invention. The frame structure according to the present invention as shown in FIGS. 3 and 4 is suitable for a frame structure such as a super high-rise RC apartment house building having a large number of column beam joint structures.

  Here, the joint structure of the column beam according to the present invention directly joins both sides of the beam members 16 and 16a to the column beam joint members 14 and 14a, and eliminates the need for post-cast concrete construction for joining the large beams. Therefore, in the building of FIG. 3 where this is used extensively, the concrete construction part 4 to be post-placed shown by the blackened portion should be made very small compared to the conventional construction method shown in FIG. 11 in the entire building plane. Can do.

  The above-mentioned conventional construction method (the joint-integrated PCa beam construction method) requires fewer mechanical joints than the construction method according to the present invention, and the present invention has fewer construction parts by the conventional construction method and can increase the PCa conversion rate. Taking advantage of the advantages of both methods, the building shown in Fig. 4 which is applied as a method according to the present invention for the outer periphery of the building and as a combined method for constructing the interior of the building using the conventional method, including the cost reduction effect, is comprehensive. It is considered optimal.

[Example of construction of frame structure]
Next, a construction example of the frame structure according to the present invention will be described.
FIGS. 5-1 to 5-3 show an example of a procedure for constructing the building of FIG. 3 by the method of the present invention. In addition, in the following description, the construction of the column beam on the Nth floor of the building has already been completed, and a case will be described in which the column beams on the inside and the outer peripheral portion of the N + 1 floor building are constructed.

  As shown in Step 1 of FIG. 5A, the existing beam member 16 a is disposed on a bracket 32 that protrudes left and right from the upper end of the column member 12. In addition, this beam member 16a may be arrange | positioned not on the bracket 32 but on the support work temporarily provided in the column member 12 grade | etc.,. Beam main bars 30 are arranged in advance on the upper surface of the beam member 16a. In this state, the column beam joint member 14a suspended by the wire 34 of the lifting equipment is moved from the side of the existing beam member 16a, and the column beam joint member 14a is inserted into the insertion hole 26 of the beam member 16a. The beam main bar 24 is inserted from the side. Here, a mechanical joint 36 is inserted in the insertion hole 26 of the beam member 16 a in advance, and the inserted beam main bar 24 is engaged with the mechanical joint 36. Thereafter, the through hole 22 of the column beam joint member 14a is filled with grout, and the joint surface between the column member 12 and the column beam joint member 14a is also filled with grout. Finally, the grout is filled into the insertion hole 26 of the beam member 16a, and the grout is also filled into the joint surface between the beam member 16a and the column beam joint member 14a.

  Next, as shown in Step 2 of FIG. 5B, the column member 12 suspended by the wire 34 of the lifting equipment is dropped from above the column beam joint member 14a to penetrate the column beam joint member 14a. The column main reinforcement 18 passes through the hole 22 and is inserted into the insertion hole 20 on the upper surface of the existing column member 12 below the column beam joint member 14a. Subsequently, the beam member 16a suspended by the wire 34 of the lifting equipment is moved from the side of the column beam joint member 14a, and the insertion hole 26 of the beam member 16a is inserted into the beam main bar 24 of the column beam joint member 14a. Mating. The tip of the beam main bar 24 is engaged with the mechanical joint 36 of the insertion hole 26.

  After that, as shown in Step 3 of FIG. 5-3, the column beam joint member 14a is joined and arranged on the side of the beam member 16a which is the terminal end inside the building in the same procedure as described above. The column member 12 is joined and disposed on the upper surface of the joint member 14a. On the upper surface of the beam member 16a, post-cast concrete 28 is placed at a predetermined time after the beam member 16a is joined to the column beam joint member 14a. On the other hand, in the outer periphery of the reverse beam, the beam member 16 is used as the reverse beam, and construction is performed in the same procedure as described above.

  If it does in this way, both sides of beam members 16a and 16 will be joined directly to column beam joint members 14a and 14, and there will be no portion which joins beam members 16a and 16 mutually. Therefore, according to the present invention, it is possible to eliminate the need for post-cast concrete for joining the large beams.

  In the above-described embodiment, the column member 12 and the column beam joint member 14a are attached by continuous suspension, and the horizontal insertion of the column beam joint member 14a and the dropping of the column member 12 are performed by a series of operations. Also good. In this case, for example, as shown in FIG. 6, the column main reinforcement 18 is housed in the column beam joint member 14a, and the column beam joint member 14a and the column member 12 are connected to the wire 38 (continuous). The thing connected by the suspension member) is constructed in advance as an integrated object. Then, this unitary object is suspended by the wire 34 of the lifting equipment and is laterally inserted from the side of the beam member 16a, and the beam main reinforcing bar 24 of the columnar beam joint member 14a of the unitary object is inserted into the insertion hole 26 of the beam member 16a. Insert from the side. If it does in this way, the lifting load of a member can be reduced.

  As described above, according to the column beam connection structure of the present invention, the column beam connection structure of the reinforced concrete structure is a column member made of precast concrete having a reinforcing bar protruding downward from the lower surface. A column beam joint member made of precast concrete having a through-hole penetrating the inside in the vertical direction and a reinforcing bar protruding in the left-right direction from the side end surface, and extending in the left-right direction from the left and right end surfaces to the inside A beam member made of precast concrete having an insertion hole, and the reinforcing bars of the column beam joint member are inserted and arranged in the insertion holes on both sides of the beam member, and the column member is inserted in the through hole of the column beam joint member. Therefore, both sides of the beam member are directly joined to the column beam joint member, and there is no portion for joining the beam members. Therefore, according to the present invention, it is possible to eliminate the need for post-cast concrete for joining the large beams. Moreover, full precasting of the outer peripheral part of the structure can be made possible.

  Moreover, according to the other column beam joint structure according to the present invention, the column member further includes an insertion hole extending in the vertical direction from the upper surface toward the inside thereof, and the reinforcing bar protrudes below the column member. Is inserted and arranged in the insertion hole on the upper surface of another column member disposed below the column beam joint member through the through hole of the column beam joint member. The upper column member and the lower column member can be joined to each other.

  Further, according to the other column beam joint structure according to the present invention, the post-cast concrete is provided on the upper surface of the beam member, which is suitable for the column beam member inside the building.

  Further, according to the frame structure according to the present invention, since the frame structure has the above-mentioned column beam joint structure, it is suitable for a frame structure such as a super high-rise RC apartment house building having many column beam joint structures. .

  The column beam joining method according to the present invention is a method for joining column beams of a reinforced concrete structure, wherein the column beam is made of precast concrete having a reinforcing bar protruding downward from the lower surface. And a column beam joint member made of precast concrete having a through-hole penetrating the inside in the vertical direction and a reinforcing bar protruding in the left-right direction from the side end surface, and from the left and right end surfaces to the inside in the left-right direction And a beam member made of precast concrete having an extending insertion hole, the column beam joint member is moved from the side of the beam member, and the column beam coupling member is inserted into the beam member insertion hole. Insert the reinforcing bar from the side, and then drop the column member from above the column beam joint member and insert the reinforcing bar of the column member into the through hole of the column beam coupling member. Will be directly bonded to the Joint members, the portion joining the beam member to each other is not present. Therefore, according to the present invention, it is possible to eliminate the need for post-cast concrete for joining the large beams. Moreover, full precasting of the outer peripheral part of the structure can be made possible.

  Further, according to another method for joining column beams according to the present invention, the column beam joining method for a reinforced concrete structure is made of precast concrete having a reinforcing bar protruding downward from the lower surface. Column beam joint member made of precast concrete having a column member, a through-hole penetrating the inside in the vertical direction, and a reinforcing bar protruding in the left-right direction from the side end surface, and left and right from the end surfaces on both sides toward the inside And a beam member made of precast concrete having an insertion hole extending in a direction. The column member is dropped from above the column beam joint member, and the column member is inserted into the through hole of the column beam joint member. After inserting the reinforcing bar, move the beam member from the side of this column beam joint member, and fit the beam member insertion hole into the reinforcing bar of the column beam coupling member. Pillar Will be directly bonded to the Joint members, the portion joining the beam member to each other is not present. Therefore, according to the present invention, it is possible to eliminate the need for post-cast concrete for joining the large beams. Moreover, full precasting of the outer peripheral part of the structure can be made possible.

  Moreover, according to the other column beam joining method according to the present invention, the column member further has an insertion hole extending in the vertical direction from its upper surface toward the inside, and the column member is formed from above the column beam joint member. When the member is dropped, the insertion hole on the upper surface of another column member that is arranged below the column beam joint member through the through hole of the column beam joint member through the rebar of the column member Therefore, the upper column member and the lower column member can be joined via the column beam joint member.

  Further, according to another method for joining column beams according to the present invention, the column beam joining method for a reinforced concrete structure is made of precast concrete having a reinforcing bar protruding downward from the lower surface. Column beam joint member made of precast concrete having a column member, a through-hole penetrating the inside in the vertical direction, and a reinforcing bar protruding in the left-right direction from the side end surface, and left and right from the end surfaces on both sides toward the inside And a beam member made of precast concrete having an insertion hole extending in a direction. The column member is dropped from above the column beam joint member, and the column member is inserted into the through hole of the column beam joint member. The rebar is inserted, and the column beam joint member and the column member connected by the continuous suspension member are built in advance as an integrated object, and this integrated object is moved from the side of the beam member to Since inserting the rebar in Column Joint member integral body from the side to the insertion hole of the timber, it is possible to reduce the lifting load member.

  As described above, the column beam connection structure, the frame structure, and the column beam connection method according to the present invention are applied to a column beam composed of precast concrete columns and beam members in a reinforced concrete structure such as a super high-rise apartment house. In particular, it is suitable for making it unnecessary to apply post-cast concrete for joining large beams, which was conventionally required.

10 Beam-column joint structure (for outer periphery of building)
10a Beam-column connection structure (for building interior)
12 Column member 14 Column beam joint member (for outer periphery of building)
14a Column beam joint (for interior of building)
16 Beam members (for outer peripheries of buildings)
16a Beam members (for building interiors)
18 Column reinforcement (rebar)
20, 26 Insertion hole 22 Through hole 24 Beam reinforcement (rebar)
28 Post-cast concrete 30 Beam main bar 32 Bracket 34 Wire 36 Mechanical joint 38 Wire (continuous suspension member)

Claims (1)

A method for joining column beams of a reinforced concrete structure,
The column beam is
A column member made of precast concrete having a reinforcing bar protruding downward from the lower surface;
A column beam joint member made of precast concrete having a through-hole penetrating the interior in the vertical direction and a reinforcing bar protruding in the left-right direction from the side end surface;
It is constituted by a beam member made of precast concrete having insertion holes extending in the left-right direction toward the inside from the end surfaces on both the left and right sides,
A column member is dropped from above the column beam joint member, the above-mentioned reinforcing bar of the column member is inserted into the through hole of the column beam joint member, and the column beam joint member and the column member are connected by the continuous suspension member. Is constructed in advance as an integral object, and the integral object is moved from the side of the beam member, and the rebar of the column beam joint member of the integral object is inserted from the lateral side into the insertion hole of the beam member. Column beam joining method.

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