JP2004244891A - Joint structure of column and beam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure of a column and a beam whose upper floor construction can be more quickly carried out, in which concrete to be placed in joints need not be full. <P>SOLUTION: A precast normal beam member 12 and precast reversed beam member 13 in which a normal beam opening 14 and a reversed beam opening 15 having a normal beam opening 14a and a reversed beam opening 15a are integrally formed respectively are connected to each other in uneven level respectively through the normal beam joint 14 and the reversed beam joint 15 with regard to a precast column member 11 embedded in a condition that the column main reinforcement 11a is projected from the upper face 11b. The normal beam joint 14 and the reversed beam joint 15 have respectively a normal beam penetration hole 14a1 and a reversed beam penetration hole 15a1 for passing the normal beam opening 14a and the reversed beam opening 15a through to pass the protrusion 11a1 of the column main reinforcement 11a through and a normal beam filling hole 14a2 and a reversed beam filling hole 15a2 for filling mortal in the normal beam penetration hole 14a1 and the reversed beam penetration hole 15a1. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a joint structure between a column and a beam used when constructing a concrete structure.
[0002]
[Prior art]
For the construction of concrete structures, especially in high-rise buildings, pre-cast column members and pre-cast beam members made by pre-casting columns and beams from the conventional construction method in which concrete is laid on site and concrete is cast on site in this, At these joints, concrete is being cast on site to form a frame. Such a precasting method can be performed by arranging precast column members and precast beam members prepared in advance in factories and the like at predetermined locations on site and partially casting concrete on site. Can be achieved. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP-A-11-280146 (paragraphs [0008] to [0013])
[0004]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional technique, in addition to the labor of assembling a formwork for concrete casting of a joint, since concrete is cast in place on the entire joint, the concrete strength of the joint until the concrete strength is fully developed. During the construction, the upper floor could not be constructed.
In addition, when the precast beam member is stepped with respect to the precast column member, for example, when joining a normal forward beam having a convex shape below the slab and a reverse beam having a convex shape on the slab, However, there is a drawback in that the size of the concrete increases, the amount of concrete poured in increases, and the merit of precasting is lost.
[0005]
An object of the present invention is to provide a joint structure between a column and a beam, in which the upper floor of a joint can be constructed more quickly and concrete does not need to be entirely poured into the joint.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the invention described in claim 1 is, for example, as shown in FIGS.
A forward beam joint 14 and a reverse beam joint 15 each having a forward beam opening 14a and a reverse beam opening 15a which are respectively opened downward with respect to the precast column member 11 in which the column main reinforcement 11a is embedded so as to protrude from the upper surface 11b. A precast forward beam member 12 and a precast reverse beam member 13 that integrally form a column and a beam, respectively, which are staggered through the forward beam joint 14 and the reverse beam joint 15 respectively. ,
The forward beam connecting portion 14 and the reverse beam connecting portion 15 are provided with a forward beam through hole 14a1 and a reverse beam for passing the protrusion 11a1 of the column main bar 11a through the forward beam opening 14a and the reverse beam opening 15a. A beam through hole 15a1 and a forward beam filling hole 14a2 and a reverse beam filling hole 15a2 for filling the forward beam opening 14a and the reverse beam opening 15a with a curable filler (mortar), respectively.
In the precast forward beam member 12, the forward beam joint portion 14 is placed on the upper surface 11b of the precast column member 11, and the projecting portion 11a1 of the main column bar 11a projects upward through the forward beam through hole 14a1. Provided in a state where
The precast reverse beam member 13 has a reverse beam joint 15 mounted on the upper surface of the forward beam joint 14, and the projecting portion 11 a 1 of the column main bar 11 a from the forward beam joint 14 is connected to the reverse beam through hole. 15a1 is provided so as to protrude upward through the
The joining is performed with the forward beam opening 14a and the reverse beam opening 15a filled with a hardening filler (mortar) from the forward beam filling hole 14a2 and the reverse beam filling hole 15a2, respectively. It is characterized by.
[0007]
According to the first aspect of the present invention, in the joint structure between a column and a beam, the precast sequential beam member is placed on the upper surface of the precast column member, and the protruding portion of the main pillar is connected to the forward beam. It can be provided in a state of protruding upward through the through hole. In addition, the reverse beam precast beam member is placed on the upper surface of the forward beam joint at the reverse beam joint, and the protruding portion of the column main reinforcement from the forward beam joint projects through the reverse beam through hole and projects upward. Can be provided. By filling the forward beam opening and the reverse beam opening with a hardening filler from the forward beam filling hole and the reverse beam filling hole, respectively, the precast column member and the precast forward beam member and the precast reverse beam member are filled. Can be joined stepwise via the forward beam joint and the reverse beam joint.
[0008]
Therefore, it is not necessary to cast concrete all over the joint as in the related art. In addition, the precast forward beam member and the precast reverse beam member allow the forward beam through hole and the reverse beam through hole of the forward beam joint portion and the reverse beam joint portion to penetrate the projecting portion of the main bar of the precast column member. The installation is easy because it can be provided. In addition, since the forward beam joint and the reverse beam joint are precast, concrete strength is developed, and the construction of the upper floor of the joint can be performed faster than before.
[0009]
According to a second aspect of the present invention, as shown in FIGS. 1 to 3, for example, in the joint structure of a column and a beam according to the first aspect,
The curable filler is mortar.
[0010]
According to the second aspect of the present invention, since the curable filler is mortar, it can be reliably filled into the forward beam opening and the reverse beam opening, and hasten the development of the strength of the joint. be able to.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
The joint structure between a column and a beam according to the present invention will be described in detail with reference to FIGS.
In FIG. 1 and the like, reference numeral 10 indicates a joint between a column and a beam according to the present invention.
[0012]
As shown in FIG. 1, a joint 10 between a column and a beam according to the present invention is a forward beam opening that opens downward with respect to a precast column member 11 in which a column main bar 11 a is embedded so as to protrude from an upper surface 11 b. A precast forward beam member 12 and a precast reverse beam member 13 integrally forming a forward beam joint 14 and a reverse beam joint 15 having a reverse beam opening 14a and a reverse beam joint 15a, respectively. 15 are connected to each other through steps. In FIG. 1, reference numerals 12a and 13a indicate beam main reinforcements, respectively.
[0013]
In the forward beam joint portion 14 and the reverse beam joint portion 15, the beam main reinforcing bars 12a and 13a are appropriately bent to secure a required fixing length. The required fixing length is ensured by being buried in the concrete forming the forward beam joint 14 and the reverse beam joint 15 in advance.
[0014]
The forward beam joint 14 is a forward beam through hole 14a1 for passing the projecting portion 11a1 of the pillar main bar 11a through the forward beam opening 14a and a forward beam through hole 14a1 for filling mortar, which will be described later, into the forward beam opening 14a. And a beam filling hole 14a2.
[0015]
Similarly, the reverse beam joint 15 fills the reverse beam opening 15a with a forward beam through hole 15a1 for passing the protrusion 11a1 of the column main bar 11a through the forward beam opening 15a and a mortar described later. And a reverse beam filling hole 15a2.
[0016]
As shown in FIG. 2, the precast forward beam member 12 has a forward beam joint 14 placed on the upper surface 11b of the precast column member 11, and the projecting portion 11a1 of the column main bar 11a penetrates the forward beam through hole 14a1. It is provided so as to protrude upward.
[0017]
As shown in FIG. 3, the precast reverse beam member 13 has the reverse beam joint 15 placed on the upper surface of the forward beam joint 14, and the projecting portion 11 a 2 of the column main bar 11 a from the forward beam joint 14 is inverted. It is provided so as to protrude upward through the beam through hole 15a1.
[0018]
The joining of the precast forward beam member 12 to the precast column member 11 is performed in a state where the mortar (not shown) is filled into the forward beam opening 14a from the forward beam filling hole 14a2. Further, the joining of the precast reverse beam member 13 to the precast column member 11 is performed with the mortar (not shown) filled in the reverse beam opening 15a from the reverse beam filling hole 15a2. The mortar is of high fluidity, high strength and fast setting. The filling of the mortar into the forward beam opening 14a and the reverse beam opening 15a is performed in a state where the column main reinforcement 11a is buried. In addition, a floor form is installed on the upper surface of the precast forward beam member 12, or after a half PCa plate is placed, slab reinforcement is arranged on site and concrete is cast.
[0019]
As described above, according to the present embodiment, the following effects can be obtained.
[0020]
{Circle around (1)} In the joint structure between a column and a beam according to the present invention, the precast forward beam member 12 is mounted on the upper surface 11b of the precast pillar member 11, and the projecting portion 11a1 of the pillar main bar 11a is mounted. It can be provided in a state of protruding upward through the forward beam through hole 14a1. Further, the precast reverse beam member 13 is mounted on the upper surface of the forward beam connection portion 14 with the reverse beam connection portion 15, and the protruding portion 11 a 2 of the column main bar 11 a from the forward beam connection portion 14 connects to the reverse beam through hole 15 a 1. It can be provided so as to penetrate and protrude upward. The mortar is filled into the forward beam opening 14a and the reverse beam opening 15a from the forward beam filling hole 14a2 and the reverse beam filling hole 15a2, respectively, so that the precast forward beam member 12 and the precast The reverse beam member 13 can be joined stepwise via the forward beam joint 14 and the reverse beam joint 15.
[0021]
Therefore, it is not necessary to cast concrete over the joint 10 as in the related art. Further, the precast forward beam member 12 and the precast reverse beam member 13 are arranged such that the forward beam through-hole 14a1 and the reverse beam through-hole 15a1 of the forward beam joint 14 and the reverse beam joint 15 have columns of the precast column member 11. Since the protrusions 11a1 and 11a2 of the main bar 11a can be provided while penetrating the protrusions, the construction is easy. Moreover, since the forward beam joint 14 and the reverse beam joint 15 are precast, concrete strength is exhibited, and the construction of the upper floor of the joint 10 can be performed faster than in the past.
[0022]
{Circle over (2)} The forward beam opening 14a and the reverse beam opening 15a can be reliably filled with the high-flow, high-strength, and quick-setting mortar, and the forward beam joint 14 and the reverse beam joint 15 can be reliably filled. Expression of the strength can be accelerated.
[0023]
The joint structure between the column and the beam according to the present invention is not limited to the present embodiment, and various improvements and design changes may be made without departing from the gist of the present invention.
[0024]
【The invention's effect】
According to the first aspect of the present invention, it is not necessary to cast concrete over the joint as in the related art, and the construction is easy. Can be done faster.
[0025]
According to the second aspect of the present invention, in addition to the effects obtained by the first aspect of the present invention, the forward beam opening and the reverse beam opening can be reliably filled, and the development of the strength of the joint is accelerated. The advantage that it can be obtained is obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a precast column member, a precast forward beam member, and a precast reverse beam member according to the present invention.
FIG. 2 is a perspective view showing a precast forward beam member and a precast reverse beam member joined to a precast column member according to the present invention.
FIG. 3 is a perspective view showing a state in which a precast column member, a precast forward beam member, and a precast reverse beam member according to the present invention are joined.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Joint part 11 Precast pillar member 11a Column main reinforcement 11a1 Projection part 11a2 Projection part 11b Upper surface 12 Precast forward beam member 12a Beam main reinforcement 13 Precast reverse beam member 13a Beam main reinforcement 14 Forward beam joint 14a Forward beam opening 14a1 Forward beam through hole 14a2 Forward beam filling hole 15 Reverse beam joint 15a Reverse beam opening 15a1 Reverse beam through hole 15a2 Reverse beam filling hole

Claims (2)

A forward beam joint and a reverse beam joint having a forward beam opening and a reverse beam opening, respectively, are formed integrally with the precast column member in which the column main reinforcement is buried so as to protrude from the upper surface. The precast forward beam member and the precast reverse beam member are a column and beam joint structure that is joined stepwise via the forward beam joint and the reverse beam joint, respectively.
A forward beam through-hole and a reverse beam through-hole for passing the projecting portion of the column main reinforcement through the forward beam opening and the reverse beam opening, and A forward beam filling hole and a reverse beam filling hole for filling the filler into the forward beam opening and the reverse beam opening, respectively;
The precast forward beam member is provided in a state in which the forward beam joint is placed on the upper surface of the precast column member, and the projecting portion of the column main reinforcement projects upward through the forward beam through hole,
In the precast reverse beam member, the reverse beam joint is placed on the upper surface of the forward beam joint, and the projecting portion of the column main reinforcing bar from the forward beam joint passes through the reverse beam through hole and rises upward. Provided in a protruding state,
The column and the beam are characterized in that the joining is performed in such a state that the forward beam opening and the reverse beam opening are filled with a hardening filler from the forward beam filling hole and the reverse beam filling hole, respectively. Joint structure. The joint structure between a column and a beam according to claim 1, wherein the curable filler is mortar.

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