JPH03257234A - Connection structure of joint for precast concrete large beam and precast concrete small beam - Google Patents

Connection structure of joint for precast concrete large beam and precast concrete small beam

Info

Publication number
JPH03257234A
JPH03257234A JP5433290A JP5433290A JPH03257234A JP H03257234 A JPH03257234 A JP H03257234A JP 5433290 A JP5433290 A JP 5433290A JP 5433290 A JP5433290 A JP 5433290A JP H03257234 A JPH03257234 A JP H03257234A
Authority
JP
Japan
Prior art keywords
precast concrete
tapered surface
girder
small
joint
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.)
Granted
Application number
JP5433290A
Other languages
Japanese (ja)
Other versions
JP2832205B2 (en
Inventor
Akemasa Miyauchi
宮内 明正
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.)
Shimizu Construction Co Ltd
Shimizu Corp
Original Assignee
Shimizu Construction Co Ltd
Shimizu 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 Shimizu Construction Co Ltd, Shimizu Corp filed Critical Shimizu Construction Co Ltd
Priority to JP5433290A priority Critical patent/JP2832205B2/en
Publication of JPH03257234A publication Critical patent/JPH03257234A/en
Application granted granted Critical
Publication of JP2832205B2 publication Critical patent/JP2832205B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To facilitate manufacture or the like by integrally forming a bracket provided with an upward facing recessed part opposed to an edge tapered surface of a small beam, in a joint part of a large beam and inserting a small beam edge into the recessed part so as to fill a space between junction surfaces with expansion mortar. CONSTITUTION:A bracket 3, having a recessed part 4 formed of an upward facing tapered surface 4a opposed to a downward facing tapered surface 2a in an edge of a PC small beam 2 and of surfaces 4b, 4c for surrounding right and left side surfaces 2b and a bottom surface 2c is integrally formed in a joint part of a PC large beam 1. After the edge of the beam 2 is inserted into the recessed part 4 of the beam 1 to fill part between the bottom surface 2c of the beam 2 and the bottom surface 4c of the recessed part 4 with level adjusting mortar 5 and a part between the tapered surface 4a and the tapered surface 2a with expansion mortar 6, respectively, concrete is placed in a site in an assembled slab mold frame. Accordingly, junction force of high reliability can be obtained while facilitating assembly work.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、プレキャストコンクリート(以下PCと云う
)大梁とPC小梁の製作が単純化され、かつPC大梁と
PC小梁との接合が容易で、しかもPC大梁、PC小梁
相互の剪断力の伝達が確実なPC大梁とPC小梁の仕口
の接合構造に関するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention simplifies the production of precast concrete (hereinafter referred to as PC) girders and PC beams, and facilitates the joining of PC girders and PC beams. Moreover, the present invention relates to a connection structure between a PC girder and a PC beam, which ensures the mutual transmission of shear force between the PC girder and PC beam.

〔従来の技術および発明が解決しようとする課題〕近年
、建築物の施工において、工期の短縮と工費の節減を図
る一手段として、大梁、小梁等をPC化した工法が多く
採用されるようになってきた。
[Prior art and problems to be solved by the invention] In recent years, in the construction of buildings, construction methods in which large beams, small beams, etc. are made of PC have been increasingly adopted as a means of shortening the construction period and reducing construction costs. It has become.

しかしながら、大梁、小梁共にPC化した場合、PC化
しない従来工法のごとく、小梁の下ば筋を大梁に定着す
ることができないため、PC大梁、PC小梁の各仕口面
を本来の接合面より若干引込ませ、この引込み空間部に
PC大梁、PC小梁に予め埋め込んだ定着筋を突出させ
、スラブコンクリートの打設と同時に上記空間部にコン
クリートを充填して両PC大梁、PC小梁を接合する方
法。
However, when both the main beam and the small beams are made of PC, the lower beams of the small beams cannot be fixed to the main beam, unlike the conventional construction method that does not use PC. The PC girders and PC small beams are retracted slightly from the joint surface, and the fixing bars previously embedded in the PC girders and PC small beams are made to protrude into this retracted space, and at the same time as slab concrete is poured, the above spaces are filled with concrete and both PC girders and PC small beams are retracted. How to join beams.

あるいはPC大梁の仕口下部にPC小梁の受座を形成し
、この受座にPC小梁の小口を載せて定着筋なしに、P
C大梁、PC小梁を接合する方法等、各種の方法が提案
されている。
Alternatively, form a seat for the PC girder at the bottom of the joint of the PC girder, place the edge of the PC girder on this seat, and connect the PC girder without an anchor bar.
Various methods have been proposed, such as a method of joining C girders and PC girders.

しかし、PC大梁、PC小梁の仕口面に両定着筋を突出
させる前者の接合方法は、PC大梁、PC小梁の製作が
複雑になり、定着筋なしにPC大梁の受座に小梁の小口
を載せる後者の接合方法は、PC大梁、pc小梁相互の
剪断力の伝達に信頼性が乏しい、等の問題があり、いず
れも完全な接合方法とは云い難かった。
However, the former joining method in which both anchor bars are protruded from the joint surfaces of the PC girder and PC small beam complicates the production of the PC girder and PC small beam, and the small beam is attached to the receiving seat of the PC girder without anchor bars. The latter joining method, in which the edges of the PC beams are placed, has problems such as poor reliability in transmitting shear force between the PC girders and the PC small beams, and it is difficult to say that either method is a perfect joining method.

本発明は上記従来の問題に鑑み、これを解決することを
課題としてなされたものであって、大梁とPC小梁の製
作が単純化され、かつPC大梁とPC小梁との接合が容
易で、しかもPC大梁、pc小梁相互の剪断力の伝達が
確実なPC大梁とPC小梁の仕口の接合構造を提供する
ことを目的としている。。
The present invention has been made in view of the above-mentioned conventional problems, and is aimed at solving the problems.The present invention simplifies the production of the main beam and the PC beam, and facilitates the joining of the PC main beam and the PC small beam. Moreover, it is an object of the present invention to provide a joint structure between a PC girder and a PC beam in which the shearing force between the PC girder and PC beam can be reliably transmitted. .

〔課題を解決するための手段〕[Means to solve the problem]

上記課題を達成するため本発明は、PC小梁の小口に下
向きテーパー面を形成すると共に、PC大梁の仕口部に
は、前記PC小梁の小口テーパー面と同傾斜角度で対向
する上向きテーパー面と、小梁小口の左右側面と底面と
を囲む面を有する凹部を設けたブラケットを大梁と一体
に形成し、前記PC小梁の小口をPC大梁のブラケット
の凹部に挿入し、接合面の間隙に膨張モルタルを充填し
たPC大梁とPC小梁の仕口の接合構造を特徴としてい
る。
In order to achieve the above-mentioned object, the present invention forms a downwardly tapered surface at the end of the PC beam, and an upwardly tapered surface facing the end of the PC beam at the same inclination angle as the end of the PC beam. A bracket having a concave portion having a surface and a surface surrounding the left and right side surfaces and the bottom surface of the small beam edge is formed integrally with the main beam, and the edge of the PC small beam is inserted into the concave portion of the bracket of the PC large beam, and the connecting surface is It is characterized by a joint structure of PC girders and PC girders whose gaps are filled with expanded mortar.

〔作  用〕[For production]

叙上のごとく本発明では、PC大梁、PC小梁の仕口面
に両定着筋を突出させないから、PC大梁、PC小梁が
単純化されて製作が容易であり、かつ、PC大梁とPC
小梁の組み付けはPC大梁の仕口部ブラケットの凹部に
小梁の小口を挿入するだけであるから、組み付けは勿論
、解体も容易である。そして、PC小梁はその小口の下
向きテーパー面がPC大梁の仕口のブラケットの上向き
テーパー面に接することによって、PC小梁にかかる剪
断力がテーパー面のせりもち効果によって小梁の小口全
面積を通じてPC大梁へ伝達され、このためPC大梁、
pc小梁相互の定着筋がなくても、十分信頼性の高い接
合力が得られる。
As described above, in the present invention, since both anchoring bars are not protruded from the joint surfaces of the PC girders and PC small beams, the PC girders and PC small beams are simplified and easy to manufacture, and the PC girders and PC girders are
To assemble the small beam, simply insert the end of the small beam into the recess of the joint bracket of the PC girder, so it is easy to assemble as well as disassemble. Then, the downwardly tapered surface of the PC girder's end touches the upwardly tapered surface of the PC girder's joint bracket, so that the shearing force applied to the PC girder is applied to the entire area of the small beam's end due to the holding effect of the tapered surface. is transmitted to the PC girder through the PC girder.
Sufficiently reliable bonding force can be obtained even without fixing bars between the PC beams.

〔実 施 例〕〔Example〕

以下本発明を図示の実施例に基いて詳細に説明する。 The present invention will be explained in detail below based on illustrated embodiments.

第工図は本発明に係るPC大梁とPC小梁の仕口の分解
斜視図、第2図は接合状態の縦断面図である。
The construction drawing is an exploded perspective view of a joint between a PC main beam and a PC small beam according to the present invention, and FIG. 2 is a longitudinal cross-sectional view of the joint state.

図において1はPC大梁、2はPC大梁1に接合するP
C小梁、3はPC大梁lの仕口部にPC大梁1と一体に
形成したブラケットであって、PC小梁2の小口には下
向きテーパー面2aが形成され、PC大梁lの前記ブラ
ケット3には、PC小梁2の小口の下向きテーパー面2
aと同傾斜角度で対向する上向きテーパー面4aと、小
−梁2の小口の左右側面2bと底面2cとを囲む面4b
In the figure, 1 is the PC beam, and 2 is the P that connects to the PC beam 1.
The C beam 3 is a bracket formed integrally with the PC beam 1 at the joint part of the PC beam 1, and a downwardly tapered surface 2a is formed at the edge of the PC beam 2. , the downward tapered surface 2 of the edge of the PC beam 2
an upwardly tapered surface 4a facing at the same inclination angle as a, and a surface 4b surrounding the left and right side surfaces 2b and bottom surface 2c of the edge of the small beam 2;
.

4b、4cが形成された凹部4が設けられている。A recess 4 in which 4b and 4c are formed is provided.

ブラケット3の外形は、第1図、第2図に示すように側
面視1辺垂直の台形でも、第3図に示すように側面視直
角三角形の斜辺下部を垂直に切った変形三角形でも、ま
た第4図に示すように側面視縦長矩形でも任意である。
The external shape of the bracket 3 may be a trapezoid with one side vertical in side view as shown in Figures 1 and 2, or a modified triangle with the lower hypotenuse of a right triangle cut vertically as shown in Figure 3. As shown in FIG. 4, a vertically elongated rectangle in side view may also be used.

叙上のPC大梁1とPC小梁2の組み付けは。Assembling the PC girder 1 and PC girder 2 mentioned above.

第2図に示すように、PC大梁1のブラケット3の凹部
4に小梁2の小口を挿入し、PC小梁2の上ばとPC大
梁1の上ばとを揃える。PC小梁2上ばとPC大梁1上
ばとを揃えるには、PC小梁2の底面2cと凹部4の底
面4cとの間の隙間にレベル調整モルタル5を盛って行
なう。またブラケット4の上向きテーパー面4aとPC
小梁2小口の下向きテーパー面2aとの間にできる間隙
には膨張モルタル6を充填する。この後組み立てたスラ
ブ型枠7に現場打ちコンクリート8を打設してスラブを
構築する。
As shown in FIG. 2, insert the edge of the small beam 2 into the recess 4 of the bracket 3 of the PC girder 1, and align the upper edge of the PC girder 2 with the upper edge of the PC girder 1. To align the upper edge of the PC beam 2 and the upper edge of the PC girder 1, level adjustment mortar 5 is placed in the gap between the bottom surface 2c of the PC beam 2 and the bottom surface 4c of the recess 4. In addition, the upwardly tapered surface 4a of the bracket 4 and the PC
The gap formed between the small beam 2 and the downwardly tapered surface 2a is filled with expanded mortar 6. Thereafter, cast-in-place concrete 8 is poured into the assembled slab formwork 7 to construct a slab.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、PC小梁の小口に下向き
テーパー面を形成すると共に、PC大梁の仕口部には、
前記PC小梁の小口テーパー面と同傾斜角度で対向する
上向きテーパー面と、小梁小口の左右側面と底面とを囲
む面を有する凹部を設けたブラケットを大梁と一体に形
成し、前記PC小梁の小口をPC大梁のブラケットの凹
部に挿入し、接合面の間隙に膨張モルタルを充填して接
合するPC大梁とPC小梁の仕口の接合構造であって、
PC大梁、PC小梁の仕口面に両定着筋を突出させない
から、PC大梁、PC小梁が単純化されて製作が容易で
あり、かつ、PC大梁とPC小梁の組み付けはPC大梁
の仕口部ブラケットの凹部に小梁の小口を挿入するだけ
であるから、組み付けは勿論、解体も容易である。そし
て、PC小梁はその小口の下向きテーパー面がPC大梁
の仕口のブラケットの上向きテーパー面に接することに
よって、PC小梁にかかる剪断力がテーパー面のせりも
ち効果によって小梁の小口全断面を通じてPC大梁へ伝
達され、このためPC大梁、PC小梁相互の定着筋がな
くても、十分信頼性の高い接合力が得られ、さらにブラ
ケットの凹部は、PC小梁のせいに合わせて変化させな
くても、PC小梁2の底面2cと凹部4の底面4cとの
間の隙間に盛るレベル調整モルタルによってレベル調整
が可能である、等の効果を奏するものである。
As explained above, the present invention forms a downwardly tapered surface at the end of the PC beam, and also forms a downwardly tapered surface at the end of the PC beam.
A bracket is formed integrally with the main beam, and has a concave portion having an upwardly tapered surface that faces the tapered surface of the small PC beam at the same angle of inclination, and a surface that surrounds the left and right side surfaces and the bottom of the small beam. A joining structure of a PC girder and a PC girder in which the edge of the beam is inserted into the recess of the bracket of the PC girder, and the gap between the joint surfaces is filled with expanded mortar.
Since both anchoring bars do not protrude from the joint surfaces of the PC girders and PC girders, the PC girders and PC girders are simplified and easy to manufacture. Since the end of the small beam is simply inserted into the recess of the joint bracket, it is easy to assemble and disassemble. Then, the downwardly tapered surface of the PC beam's end touches the upwardly tapered surface of the PC beam's joint bracket, so that the shearing force applied to the PC beam is applied to the entire cross section of the small beam's end due to the holding effect of the tapered surface. Therefore, a sufficiently reliable bonding force can be obtained even without an anchor between the PC girder and PC girder, and the recess of the bracket changes according to the strength of the PC girder. Even if this is not done, the level can be adjusted by applying level adjustment mortar in the gap between the bottom surface 2c of the PC beam 2 and the bottom surface 4c of the recess 4.

【図面の簡単な説明】[Brief explanation of drawings]

図面は9本発明の実施例を示し、第1図は本発明に係る
PC大梁とPC小梁の仕口の分解斜視図、第2図は接合
状態の縦断面図、第3図、第4図は形状の異なるブラケ
ットの実施例の各側面図である。 1・・・プレキャストコンクリート大梁、2・・プレキ
ャストコンクリート小梁、2a・・・プレキャストコン
クリート小梁の下向きテーパー面、3・・・ブラケット
、4・・・ブラケットの凹部、4a・・・ブラケットの
上向きテーパー面、5・・・レベル調整モルタル、6・
・・膨張モルタル。
The drawings show nine embodiments of the present invention, and FIG. 1 is an exploded perspective view of a joint between a PC main beam and a PC small beam according to the present invention, FIG. 2 is a longitudinal cross-sectional view of a joined state, FIGS. The figures are side views of examples of brackets having different shapes. DESCRIPTION OF SYMBOLS 1... Precast concrete main beam, 2... Precast concrete small beam, 2a... Downward tapered surface of precast concrete small beam, 3... Bracket, 4... Recessed part of bracket, 4a... Upward direction of bracket Tapered surface, 5...Level adjustment mortar, 6.
... Expanding mortar.

Claims (1)

【特許請求の範囲】[Claims] プレキャストコンクリート小梁の小口に下向きテーパー
面を形成すると共に、プレキャストコンクリート大梁の
仕口部には、前記プレキャストコンクリート小梁の小口
テーパー面と同傾斜角度で対向する上向きテーパー面と
、小梁小口の左右側面と底面とを囲む面を有する凹部を
設けたブラケットを大梁と一体に形成し、前記プレキャ
ストコンクリート小梁の小口をプレキャストコンクリー
ト大梁のブラケットの凹部に挿入し、接合面の間隙に膨
張モルタルを充填したこと特徴とするプレキャストコン
クリート大梁とプレキャストコンクリート小梁の仕口の
接合構造。
A downwardly tapered surface is formed at the end of the precast concrete beam, and the joint part of the precast concrete girder has an upwardly tapered surface that faces at the same angle of inclination as the end of the precast concrete beam, and an upwardly tapered surface at the end of the precast concrete beam. A bracket provided with a concave portion having a surface surrounding the left and right side surfaces and the bottom surface is formed integrally with the girder, the small end of the precast concrete small beam is inserted into the concave portion of the bracket of the precast concrete girder, and expanding mortar is applied to the gap between the joint surfaces. A joint structure of a precast concrete main beam and a precast concrete small beam characterized by filling.
JP5433290A 1990-03-06 1990-03-06 Connection structure of precast concrete beam and precast concrete beam connection Expired - Lifetime JP2832205B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5433290A JP2832205B2 (en) 1990-03-06 1990-03-06 Connection structure of precast concrete beam and precast concrete beam connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5433290A JP2832205B2 (en) 1990-03-06 1990-03-06 Connection structure of precast concrete beam and precast concrete beam connection

Publications (2)

Publication Number Publication Date
JPH03257234A true JPH03257234A (en) 1991-11-15
JP2832205B2 JP2832205B2 (en) 1998-12-09

Family

ID=12967643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5433290A Expired - Lifetime JP2832205B2 (en) 1990-03-06 1990-03-06 Connection structure of precast concrete beam and precast concrete beam connection

Country Status (1)

Country Link
JP (1) JP2832205B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07207800A (en) * 1994-01-10 1995-08-08 Kajima Corp Floor construction method using precast reinforced concrete large beam and steel frame small beam
JP2002097716A (en) * 2000-09-22 2002-04-05 Ando Corp Short support slab supporting structure
CN101806099A (en) * 2010-03-12 2010-08-18 南通建筑工程总承包有限公司 Vertical joint waterproofing node of exterior wall
KR101133420B1 (en) * 2008-07-24 2012-04-09 원대연 Precast concrete connection block and the continuity method of composite bridges using it
JP2012107452A (en) * 2010-11-18 2012-06-07 Sumitomo Mitsui Construction Co Ltd Precast reinforced-concrete beam

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07207800A (en) * 1994-01-10 1995-08-08 Kajima Corp Floor construction method using precast reinforced concrete large beam and steel frame small beam
JP2002097716A (en) * 2000-09-22 2002-04-05 Ando Corp Short support slab supporting structure
KR101133420B1 (en) * 2008-07-24 2012-04-09 원대연 Precast concrete connection block and the continuity method of composite bridges using it
CN101806099A (en) * 2010-03-12 2010-08-18 南通建筑工程总承包有限公司 Vertical joint waterproofing node of exterior wall
JP2012107452A (en) * 2010-11-18 2012-06-07 Sumitomo Mitsui Construction Co Ltd Precast reinforced-concrete beam

Also Published As

Publication number Publication date
JP2832205B2 (en) 1998-12-09

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