JP2004137843A - Join structure of column and beam - Google Patents

Join structure of column and beam Download PDF

Info

Publication number
JP2004137843A
JP2004137843A JP2002305739A JP2002305739A JP2004137843A JP 2004137843 A JP2004137843 A JP 2004137843A JP 2002305739 A JP2002305739 A JP 2002305739A JP 2002305739 A JP2002305739 A JP 2002305739A JP 2004137843 A JP2004137843 A JP 2004137843A
Authority
JP
Japan
Prior art keywords
column
cast
precast concrete
joint structure
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002305739A
Other languages
Japanese (ja)
Inventor
Junichi Tezuka
手塚 純一
Katsumi Ishikawa
石川 勝美
Kohei Tada
多田 公平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toda Corp
Original Assignee
Toda Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toda Corp filed Critical Toda Corp
Priority to JP2002305739A priority Critical patent/JP2004137843A/en
Publication of JP2004137843A publication Critical patent/JP2004137843A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Joining Of Building Structures In Genera (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a join structure of a column and a beam capable of preventing the development of crack in cast-in-place concrete placed on an upper face of a beam end part. <P>SOLUTION: This join structure 5 of the column and the beam is constituted in such a way that a precast concrete beam 2 to which prestress is given is installed in a head part of the column 1, a tensile member 8 is buried in a joining part of the column 1 in cast-in-place concrete placed in the head part of the column 1 and the precast concrete beam 2 and the precast concrete beam 2, predetermined prestress is given to the cast-in-place concrete by the tensile member 8, and the tensile member 8 is arranged by curving onto an outer side or an inner side in the join part of the column 1 and the precast concrete beam 2. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は柱と梁の接合構造に関するものである。
【0002】
【従来の技術】
従来、柱と梁の接合構造としては、特開2000−204657号公報の発明が開示されている。この接合構造においては柱と梁との接合にPC鋼線などの引張材が使用され、この引張材により梁がプレストレスを付与されて柱に接合されている。
【0003】
【発明が解決しようとする課題】
しかし、上記の柱と梁の接続構造においては、梁がプレストレスを付与されて柱に接合されているが、梁端部の上面に打設された現場打ちコンクリートは何の手当もされていないため、地震などによる繰り返し荷重でひび割れが発生してしまうという問題があった。
【0004】
本発明はこれらの問題に鑑みてなされたものであり、その目的は、梁端部に打設された現場打ちコンクリートにひび割れが発生しない柱と梁の接合構造を提供することである。
【0005】
【課題を解決するための手段】
以上の課題を解決するための柱と梁の接続構造の要旨は、プレストレスが付与されたプレキャストコンクリート梁が柱の頭部に設置され、該柱の頭部とプレキャストコンクリート梁とに打設された現場打ちコンクリート内における柱とプレキャストコンクリート梁との接合部に引張材が埋設され、該引張材により前記現場打ちコンクリートに所定のプレストレスが付与されてなることを特徴とする構成であり、上記引張材は柱とプレキャストコンクリート梁との接合部において外側または内側に湾曲して配設されたことを含むものである。
プレキャストコンクリート梁の端部に打設された現場打ちコンクリートに引張材で所定のプレストレスが付与されたので、地震などによる繰り返し荷重によってもひび割れが生じない。
また引張材を柱とプレキャストコンクリート梁の接合部において外側または内側に湾曲して配設したことにより、接合部における鉄筋を避けて配筋することができるとともに、外側に湾曲された引張材を緊張すると柱に内側方向への力が作用して、接合部におけるコンクリートのひび割れの発生を防ぐ。
【0006】
【発明の実施の形態】
以下、本発明の柱と梁の接合構造の実施の形態を図面に基づいて詳細に説明する。各実施の形態において同じ構成は同じ符号を付して説明し、異なった構成にのみ異なった符号を付して説明する。
【0007】
本発明の柱と梁の接合構造は、図1に示すように、適宜間隔ごとに立設されたプレキャストコンクリート柱(以下、PC柱という)1の頭部間にハーフプレキャストコンクリート梁(以下、PC梁という)2が設置され、このPC梁2間にハーフプレキャストコンクリート床板(以下、PC床板という)3が設置され、このPC床板3とPC梁2とPC柱1とに現場打ちコンクリート(以下、コンクリートという)4が打設されて構成されている。
【0008】
図2は第1の実施の形態の柱と梁の接合構造5を示したものであり、建物の内側、すなわちPC柱1の四方にPC梁2が架設された平面十字形の接合構造である。この接合構造5における一方の梁端部6からPC柱1を通って対向した他方の梁端部6にかけてのコンクリート7に引張材8が配設され、この引張材8によって前記コンクリート7に所定のプレストレスが付与されている。
【0009】
この引張材8はPC鋼撚線、PC鋼線、PC鋼棒であり、梁端部6からPC柱1内にかけて内側方向へ湾曲させて(他の鉄筋を避けるために)配設され、その両端部がコンクリート7の定着凹部9内に定着されている。この引張材8によりコンクリート7にプレストレスが付与されて、地震などによる繰り返し荷重によるひび割れの発生を防ぐ。
【0010】
また図3は第2の実施の形態の柱と梁の接合構造10を示したものであり、建物の外側、すなわちPC柱1の三方にPC梁2が架設された平面T字形の接合構造である。この接合構造10は梁端部6とPC柱1とのコンクリート7に引張材8が配設された以外は、第1の実施の形態の接合構造5と同じ構成である。
【0011】
また図4は第3の実施の形態の柱と梁の接合構造11を示したものであり、引張材8を梁端部6からPC柱1にかけて外側方向へ湾曲させて(他の鉄筋を避けるために)配設した以外は、第1の実施の形態の接合構造5と同じ構成である。このように引張材8を外側に湾曲させて配設すると、PC柱1に内側方向への力が作用するため、帯筋12と同じように、接合部内におけるコンクリート7が結束される。
【0012】
また図5は第4の実施の形態の柱と梁の接合構造13を示したものであり、引張材8を梁端部6からPC柱1にかけて外側方向へ湾曲させて(他の鉄筋を避けるために)配設した以外は、第2の実施の形態の接合構造10と同じ構成であり、同じ効果を奏するものである。
【0013】
【発明の効果】
梁端部の上面に打設されたコンクリートにひび割れが発生しない。
【0014】
帯筋と同じように、接合部内におけるコンクリートが結束される。
【図面の簡単な説明】
【図1】柱と梁の接合構造の全体図である。
【図2】(1)は第1の実施の形態の柱と梁の接合構造の平面図、(2)は(1)のA−A線断面図である。
【図3】(1)は第2の実施の形態の柱と梁の接合構造の平面図、(2)は(1)のB−B線断面図である。
【図4】第3の実施の形態の柱と梁の接合構造の平面図である。
【図5】第4の実施の形態の柱と梁の接合構造の平面図である。
【符号の説明】
1 PC柱
2 PC梁
3 PC床板
4、7 コンクリート
5、10、11、13 接合構造
6 梁端部
8 引張材
9 定着凹部
12 帯筋
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a joint structure between a column and a beam.
[0002]
[Prior art]
Conventionally, as a joint structure between a column and a beam, the invention of Japanese Patent Application Laid-Open No. 2000-204657 has been disclosed. In this joint structure, a tensile member such as a PC steel wire is used for joining the column and the beam, and the beam is prestressed by the tensile member and joined to the column.
[0003]
[Problems to be solved by the invention]
However, in the connection structure between the column and the beam, the beam is prestressed and joined to the column, but the cast-in-place concrete cast on the upper surface of the beam end has not been treated at all. Therefore, there has been a problem that cracks occur due to repeated loads due to an earthquake or the like.
[0004]
The present invention has been made in view of these problems, and an object of the present invention is to provide a joint structure between a column and a beam that does not cause cracking in cast-in-place concrete cast at the beam end.
[0005]
[Means for Solving the Problems]
The gist of the connection structure between a column and a beam for solving the above problems is that a prestressed precast concrete beam is installed at the head of the column, and is cast into the head of the column and the precast concrete beam. A structure in which a tensile material is buried at a joint between the column and the precast concrete beam in the cast-in-place concrete, and a predetermined prestress is applied to the cast-in-place concrete by the tensile material. The tensile member includes that it is disposed so as to be curved outward or inward at the joint between the column and the precast concrete beam.
Since a predetermined prestress is applied to the cast-in-place concrete cast at the end of the precast concrete beam with a tensile material, cracking does not occur even by repeated loads due to an earthquake or the like.
In addition, by arranging the tensile material curved outward or inward at the joint between the column and the precast concrete beam, it is possible to arrange the reinforcement avoiding the reinforcing steel at the joint and to tension the outwardly curved tensile material. Then, an inward force acts on the column to prevent the concrete from cracking at the joint.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a joint structure between a column and a beam according to the present invention will be described in detail with reference to the drawings. In each embodiment, the same configuration will be described with the same reference numerals, and only different configurations will be described with different reference numerals.
[0007]
As shown in FIG. 1, a joint structure between a column and a beam according to the present invention is a half precast concrete beam (hereinafter, referred to as PC) between the heads of precast concrete columns (hereinafter, referred to as PC columns) 1 erected at appropriate intervals. A half precast concrete floor plate (hereinafter, referred to as a PC floor plate) 3 is installed between the PC beams 2, and a cast-in-place concrete (hereinafter, referred to as a PC floor plate 3), the PC beams 2, and the PC columns 1 are provided. (Referred to as concrete) 4.
[0008]
FIG. 2 shows a joint structure 5 of a column and a beam according to the first embodiment, which is a plane cross-shaped joint structure in which a PC beam 2 is installed inside a building, that is, on four sides of a PC column 1. . A tension member 8 is disposed on concrete 7 from one beam end 6 to the other beam end 6 which is opposite through the PC column 1 in the joint structure 5. Prestressed.
[0009]
The tensile member 8 is a PC steel wire, a PC steel wire, or a PC steel bar, and is disposed inwardly from the beam end 6 to the inside of the PC column 1 (in order to avoid other rebars). Both ends are fixed in the fixing recess 9 of the concrete 7. Prestress is applied to the concrete 7 by the tensile member 8 to prevent the occurrence of cracks due to a repeated load due to an earthquake or the like.
[0010]
FIG. 3 shows a joint structure 10 of a column and a beam according to the second embodiment, which is a flat T-shaped joint structure in which a PC beam 2 is installed on the outside of a building, that is, on three sides of a PC column 1. is there. This joint structure 10 has the same configuration as the joint structure 5 of the first embodiment, except that a tensile member 8 is disposed on concrete 7 between the beam end 6 and the PC column 1.
[0011]
FIG. 4 shows a joint structure 11 between a column and a beam according to the third embodiment, in which a tensile member 8 is bent outward from a beam end 6 to a PC column 1 (to avoid other reinforcing bars). It has the same configuration as the joining structure 5 of the first embodiment except that it is provided. When the tension member 8 is disposed so as to be curved outward, a force inwardly acts on the PC column 1, so that the concrete 7 in the joint portion is bound like the stirrup 12.
[0012]
FIG. 5 shows a joint structure 13 between a column and a beam according to the fourth embodiment, in which a tensile member 8 is bent outward from a beam end 6 to a PC column 1 (to avoid other reinforcing bars). Except for this, the structure is the same as that of the joint structure 10 of the second embodiment, and the same effect is obtained.
[0013]
【The invention's effect】
No cracking occurs in the concrete cast on the upper surface of the beam end.
[0014]
Like the stirrups, the concrete in the joint is bound.
[Brief description of the drawings]
FIG. 1 is an overall view of a joint structure between a column and a beam.
FIG. 2A is a plan view of a joint structure between a column and a beam according to the first embodiment, and FIG. 2B is a cross-sectional view taken along line AA of FIG.
FIG. 3A is a plan view of a joint structure between a column and a beam according to a second embodiment, and FIG. 3B is a cross-sectional view taken along line BB of FIG.
FIG. 4 is a plan view of a joint structure between a column and a beam according to a third embodiment.
FIG. 5 is a plan view of a joint structure between a column and a beam according to a fourth embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 PC column 2 PC beam 3 PC floor board 4, 7 Concrete 5, 10, 11, 13 Joint structure 6 Beam end 8 Tensile material 9 Fixing recess 12 Strap

Claims (2)

プレストレスが付与されたプレキャストコンクリート梁が柱の頭部に設置され、該柱の頭部とプレキャストコンクリート梁とに打設された現場打ちコンクリート内における柱とプレキャストコンクリート梁との接合部に引張材が埋設され、該引張材により前記現場打ちコンクリートに所定のプレストレスが付与されてなることを特徴とする柱と梁の接続構造。A prestressed precast concrete beam is installed at the head of a column, and a tensile material is applied to the joint between the column and the precast concrete beam in cast-in-place concrete cast between the head of the column and the precast concrete beam. Wherein a predetermined prestress is applied to the cast-in-place concrete by the tensile material. 引張材は柱とプレキャストコンクリート梁との接合部において外側または内側に湾曲して配設されたことを特徴とする請求項1に記載の柱と梁の接続構造。The connection structure between a column and a beam according to claim 1, wherein the tensile member is disposed so as to curve outward or inward at a joint portion between the column and the precast concrete beam.
JP2002305739A 2002-10-21 2002-10-21 Join structure of column and beam Pending JP2004137843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002305739A JP2004137843A (en) 2002-10-21 2002-10-21 Join structure of column and beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002305739A JP2004137843A (en) 2002-10-21 2002-10-21 Join structure of column and beam

Publications (1)

Publication Number Publication Date
JP2004137843A true JP2004137843A (en) 2004-05-13

Family

ID=32452766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002305739A Pending JP2004137843A (en) 2002-10-21 2002-10-21 Join structure of column and beam

Country Status (1)

Country Link
JP (1) JP2004137843A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109252727A (en) * 2018-09-28 2019-01-22 西北民族大学 The integrated assembly node of Seismic Isolation of Isolation Layer rubber support and column, beam slab system and method
CN113605539A (en) * 2021-06-30 2021-11-05 江苏晟功建设集团有限公司 Assembly type steel-concrete structure column beam bonded prestress node structure and construction method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109252727A (en) * 2018-09-28 2019-01-22 西北民族大学 The integrated assembly node of Seismic Isolation of Isolation Layer rubber support and column, beam slab system and method
CN109252727B (en) * 2018-09-28 2023-10-13 西北民族大学 Shock insulation layer rubber support, column, beam and plate system integrated assembly node and method
CN113605539A (en) * 2021-06-30 2021-11-05 江苏晟功建设集团有限公司 Assembly type steel-concrete structure column beam bonded prestress node structure and construction method

Similar Documents

Publication Publication Date Title
JP2005083072A (en) Joint structure and joint construction method for precast concrete slab
JP3830767B2 (en) Continuous girder for bridge
JP2007211553A (en) Continuous viaduct
JP2004218429A (en) Bridge structure
JP4073746B2 (en) Construction method of corrugated steel web bridge
JP4447632B2 (en) Beam and beam-column joint structure and method of joining the same
JP2008088634A (en) Composite steel-concrete floor slab
JP2017101445A (en) Joining method of precast floor slab and joining structure of precast floor slab
JP2004137843A (en) Join structure of column and beam
JP2000038797A (en) Semi-precast floor slab
JP4565331B2 (en) Floor structure
JP2004116059A (en) Method of building corrugated steel plate web bridge
JPH10110498A (en) Half-precast floor slab and construction method of hollow flat slab making use thereof
JPH10115000A (en) Wet type connecting method of precast beam and column in reinforced-concrete constructed building
JPH0426483Y2 (en)
JP2004232229A (en) Precast concrete slab
JPH10183533A (en) Bridge girder, bridge girder component, and work execution method for bridge girder
JP4832532B2 (en) Reinforced concrete structure
JPH01290853A (en) Composite floor board using deck plate
JP2734929B2 (en) How to build a slab
JP2003155707A (en) Diagonal member fixing part reinforcing structure for cable stayed bridge
KR200384109Y1 (en) Concrete-composite Crossbeam
JP2006188881A (en) Joint structure of beam and floor board
JP2005042491A (en) Prestressed concrete structure
JP2024071970A (en) Precast deck joint structure and precast deck joint joining method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050930

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070214

A131 Notification of reasons for refusal

Effective date: 20070416

Free format text: JAPANESE INTERMEDIATE CODE: A131

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20070808