JPH0317335A - Structure for construction joint of concrete slab - Google Patents
Structure for construction joint of concrete slabInfo
- Publication number
- JPH0317335A JPH0317335A JP14930789A JP14930789A JPH0317335A JP H0317335 A JPH0317335 A JP H0317335A JP 14930789 A JP14930789 A JP 14930789A JP 14930789 A JP14930789 A JP 14930789A JP H0317335 A JPH0317335 A JP H0317335A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- concrete
- floor slab
- slab
- unloading
- 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
Links
- 238000010276 construction Methods 0.000 title abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
Description
【発明の詳細な説明】
《産業上の利用分野｝
本発明は、コンクリートスラブの打継ぎ構造に係り、特
に床スラブに工事施工中の荷役用として開口部を開設し
ている場合、荷揚げ作業完了後その開口部を閉塞するた
めのコンクリートスラブの打継ぎ構造に関するものであ
る。[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a concrete slab pouring structure, and in particular, when an opening is provided in a floor slab for loading and unloading during construction work, the present invention relates to a concrete slab pouring structure. This invention relates to a concrete slab pouring structure for later closing the opening.
《従来の技術〉
従来のコンクリートスラブの打継ぎ構造としては、特開
昭６１−２２９０５１号公報や実公昭６２−８２９５号
公報に記載された技術が知られている。<<Prior Art>> As a conventional concrete slab pouring structure, the techniques described in Japanese Patent Application Laid-Open No. 61-229051 and Japanese Utility Model Publication No. 62-8295 are known.
ここに、資材等の荷揚げのために床スラブ２１に開設し
た荷揚げ用開口部２２を閉塞して平坦な面一の床を形成
するために、第４図〜第７図に示すように、床スラブ２
１を支持するＦデッキ２３が架設される梁２４上に、床
スラプ２１側と開口部２２側とを区画してＦデッキ２３
上に打設されるコンクリートを堰き止める止枠２５を着
脱可能に設置し、次いで止枠２５に形成した挿通口２６
に、床スラブ２１側から開口部２２側に亘って延出させ
てシヤ・コネクタとして差筋２７を配設し、次いでＦデ
ッキ２３上にコンクリートを打設してコンクリートスラ
ブ２８を施工し、次いで差筋２７の開口部側延出部分２
７ａを、荷揚げ作業の陣害とならないように折り曲げ、
荷揚げ作業の完了後、差筋２７の開口部側延出部分２７
ａを開口部２２に元のように延長するように伸ばし、そ
の後梁２４上に開口部２２を塞ぐようにＦデッキ２３を
架設し、最後に止枠２５を除去すると共にＦデッキ２３
上にコンクリートを打設して、コンクリートスラブ２つ
の打継ぎを行なうようにしている。Here, in order to close the unloading opening 22 opened in the floor slab 21 for unloading materials, etc. and form a flat, flush floor, as shown in FIGS. 4 to 7, the floor is opened. slab 2
1, on the beam 24 on which the F deck 23 supporting the F deck 23 is constructed, partitioning the floor slab 21 side and the opening 22 side
A stop frame 25 for damming the concrete to be placed above is removably installed, and then an insertion hole 26 formed in the stop frame 25 is installed.
Next, a differential bar 27 is provided extending from the floor slab 21 side to the opening 22 side as a shear connector, and then concrete is poured on the F deck 23 to construct a concrete slab 28. Opening side extension portion 2 of differential bar 27
7a, so as not to interfere with the unloading work,
After the unloading work is completed, the opening side extension portion 27 of the differential reinforcement 27
a to the opening 22 as before, then construct the F deck 23 on the beam 24 so as to close the opening 22, and finally remove the retaining frame 25 and install the F deck 23.
Concrete is poured on top and the two concrete slabs are poured together.
（発明が解決しようとする課題）
しかし、上述したコンクリートスラブの打継ぎ作業にあ
っては、止枠２５の設置とその除去並びに差筋２７の２
回に亘る曲げ伸ばしというように様々な作業があり、様
々な職種の作業者によって煩雑な作業を実施しなければ
ならないという問題があった。また、通常の鉄筋とは別
個に特別に差筋２７を用意しなければならないという問
題もあった。(Problem to be Solved by the Invention) However, in the above-mentioned concrete slab pouring work, the installation and removal of the retaining frame 25 and the two
There is a problem in that there are various types of work such as bending and stretching over several times, and the complicated work must be performed by workers of various occupations. Additionally, there was a problem in that a special reinforcing bar 27 had to be prepared separately from the normal reinforcing bars.
本発明は、上述のような問題点を解決するために創案さ
れたものであり、容易に準備できる構造材を利用し、職
種乃至は工数を削減し省力化とコストダウンを達成しつ
つ、十分なアンカー作用を確保できるコンクリートスラ
ブの打継ぎ構造を提供することを目的とする。The present invention was devised to solve the above-mentioned problems, and utilizes easily prepared structural materials to reduce the number of jobs and man-hours, thereby achieving labor savings and cost reductions. The purpose of this invention is to provide a concrete slab pouring structure that can ensure a good anchoring effect.
《課題を解決するための手段）
本発明は、梁上に設置した止枠によって区画されて床ス
ラブに開口形成された荷揚げ用開口部に、止枠を介して
床スラブからシヤ・コネクタを延出しコンクリートを打
設して、床スラブにコンクリートスラブを打ち継ぐよう
にしたコンクリートスラブの打継ぎ構造において、止枠
を梁に接合すると共に、シヤ・コネクタを、止枠を介し
て床スラブから開口部に亘って略梁幅で延出されるボル
ト・ナットで形成して止枠に接合したことを特徴とする
。<Means for Solving the Problems> The present invention extends a shear connector from a floor slab via a stop frame to an unloading opening formed in a floor slab and partitioned by a stop frame installed on a beam. In a concrete slab joint structure in which poured concrete is poured and the concrete slab is connected to the floor slab, the stop frame is connected to the beam, and the shear connector is opened from the floor slab through the stop frame. It is characterized in that it is formed of bolts and nuts that extend approximately the width of the beam over the entire length and is connected to the stop frame.
《作 用｝
本発明の作用について述べると、止枠を梁に接合するこ
とにより止枠の設置とその除去作業を廃止できる。また
シヤ・コネクタを、止枠を介して床スラブから開口部に
亘って略梁幅で延出されるボルト・ナットで形成するこ
とにより、シヤ・コネクタが荷揚げ作業の障害となるこ
とはなく、２回に亘る曲げ伸ばし作業を廃止できる。こ
のように、ボルト・ナットで形成したシヤ・コネクタ並
びに止枠の接合作業を主体として打継ぎ作業を実施でき
る。他方、シヤ・コネクタは簡単に手に入れることので
きるボルト・ナットで構成されるので、特別の差筋等を
準備する必要がない。またボルト等はネジ面を有するの
で、短い長さで相当の定着表面積乃至は係合表面積を稼
ぐことができ、長い差筋と同等のアンカー機能を発揮す
る。<<Function>> Regarding the function of the present invention, by joining the stop frame to the beam, the installation and removal work of the stop frame can be eliminated. In addition, by forming the shear connector with bolts and nuts that extend approximately the beam width from the floor slab to the opening via the stopper frame, the shear connector does not become an obstacle to unloading work, and This eliminates the need for multiple bending and stretching operations. In this way, the piecing work can be carried out mainly by joining the shear connector and the stopper frame made of bolts and nuts. On the other hand, since the shear connector is composed of bolts and nuts that are easily available, there is no need to prepare special reinforcing bars or the like. Further, since bolts and the like have a threaded surface, a considerable anchoring surface area or engagement surface area can be obtained with a short length, and they exhibit the same anchoring function as a long crossbar.
《実 施 例）
以下、本発明の好適実施例を図面を参照しながら詳述す
る。<<Example>> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明のコンクリートスラブの打継ぎ構造の開
口部開放時の側断面図、第２図はその正面図、第３図は
コンクリートスラブ打継ぎ後の側断面図である。FIG. 1 is a side sectional view of the concrete slab splicing structure of the present invention when the opening is open, FIG. 2 is a front view thereof, and FIG. 3 is a side sectional view after the concrete slab is spliced.
本発明は基本的には、梁１上に設置した止枠２によって
区画されて床スラブ３に開口形成された荷揚げ用開口部
４に、止枠２を介して床スラブ３からシヤ・コネクタを
延出しコンクリートを打設して、床スラブ３にコンクリ
ートスラブ６を打ち継ぐようにしたコンクリートスラブ
の打継ぎ構造において、止枠２を梁ｌに接合すると共に
、シヤ・コネクタを、止枠２を介して床スラブ３から開
口部４に亘って略梁幅で延出されるボルト◆ナット５，
９で形成して止枠２に接合して構成される。The present invention basically involves connecting a shear connector from a floor slab 3 via a stop frame 2 to a loading opening 4 defined by a stop frame 2 installed on a beam 1 and formed in the floor slab 3. In the concrete slab joint structure in which extended concrete is poured and the concrete slab 6 is poured onto the floor slab 3, the retaining frame 2 is joined to the beam l, and the shear connector is connected to the retaining frame 2. A bolt◆nut 5, which extends from the floor slab 3 to the opening 4 by approximately the width of the beam,
9 and is joined to the retaining frame 2.
図示するように、この実施例のコンクリートスラブの打
継ぎ構造は、梁１上に溶接されて床スラブ３に荷揚げ用
開口部４を区画形成すると共に、この開口部４周りに床
スラブ３を形成すべく打設されるコンクリートを堰き止
める止枠２と、この止枠２に形成されるボルト挿道口１
０を介して開口部４側及び床スラブ３側両側に貫通延出
されるボルト５及びこれの先端に螺着され溶接されるナ
ットってなるシヤ・コネクタとで主に構成されている。As shown in the figure, the concrete slab pouring structure of this embodiment is welded onto a beam 1 to define a loading opening 4 in a floor slab 3, and to form a floor slab 3 around this opening 4. A stop frame 2 for damming the concrete to be poured, and a bolt insertion hole 1 formed in this stop frame 2.
It mainly consists of a bolt 5 that extends through the opening 4 side and the floor slab 3 side through the bolt 5, and a shear connector that is a nut that is screwed and welded to the tip of the bolt 5.
具体的には止枠２は、梁１及びボルト５と溶接接合でき
るように鉄板で構或される。そして、この止枠２の両側
面には、そのボルト挿通口１０に挿通されるボルト５が
溶接接合され、このボルトの頭部５ａとその先端のナッ
ト９とが梁１のフランジ１ａと略同じ幅まで張り出して
いる。ここに、シヤ・コネクタは簡単に手に入れること
のできるボルト・ナット５．９で構成されるので、特別
の差筋等を準備する必要がない。またボルト５等はネジ
面を有するので、短い長さで相当の定着表面積乃至は係
合表面積を備えており、コンクリート内に埋め込まれた
際に十分なアンカー機能を発揮するようになっている。Specifically, the stopper frame 2 is made of a steel plate so that it can be welded to the beam 1 and bolts 5. A bolt 5 that is inserted into the bolt insertion hole 10 is welded to both sides of the stopper frame 2, and the head 5a of this bolt and the nut 9 at its tip are approximately the same as the flange 1a of the beam 1. It extends to its full width. Here, since the shear connector is composed of easily available bolts and nuts 5.9, there is no need to prepare special reinforcing bars or the like. Furthermore, since the bolts 5 and the like have threaded surfaces, they have a considerable anchoring surface area or engagement surface area despite their short lengths, and are designed to exhibit a sufficient anchoring function when embedded in concrete.
他方止枠２は、Ｆデッキ７の施工に際して、梁１のフラ
ンジ１ａの中心線に沿って溶接により取付けられる。Ｆ
デッキ７は、板材に断面三角形状のリブ７ａを形成して
構成されている。このＦデッキ７は、床スラブ３側及び
開口部４を閉塞する際に梁１間に架設される。On the other hand, the retaining frame 2 is attached by welding along the center line of the flange 1a of the beam 1 when constructing the F deck 7. F
The deck 7 is constructed by forming ribs 7a having a triangular cross section on a plate material. This F deck 7 is constructed between the beams 1 when closing the floor slab 3 side and the opening 4.
次に、上述のように構成されるコンクリートスラブの打
継ぎ構造の構築について説明する。Next, construction of the concrete slab pouring structure constructed as described above will be explained.
先ず、開口部４を囲むように配設された梁１の外側に床
スラブ３側のＦデッキ７を架設すると共に、この開口部
４を区画するように梁１上に止枠２を溶接固定する。そ
の後、この止枠２の挿通口１０にボルト５を挿通すると
共にこれにナット９を螺着しボルト５と止枠２並びにボ
ルト５とナット９とを溶接接合して、止枠２を介して床
スラブ３側から開口部４側に亘って略梁幅で延出される
シヤ・コネクタを形成する。次いで、床スラプ３側のＦ
デッキ７上にコンクリートを打設し、ボルト・ナット５
．９をその中に埋め込んだ状態で床スラブ３を形成する
。First, the F deck 7 on the floor slab 3 side is constructed on the outside of the beam 1 arranged so as to surround the opening 4, and the stop frame 2 is welded and fixed onto the beam 1 so as to partition this opening 4. do. Thereafter, the bolt 5 is inserted into the insertion hole 10 of the stop frame 2, and the nut 9 is screwed onto the bolt 5, and the bolt 5 and the stop frame 2, as well as the bolt 5 and the nut 9, are welded together. A shear connector is formed that extends from the floor slab 3 side to the opening 4 side with approximately the width of the beam. Next, F on the floor slab 3 side
Pour concrete on deck 7 and install bolts and nuts 5
．． A floor slab 3 is formed with 9 embedded therein.
このように床スラブ３が形成された状態において、開設
された開口部４から荷揚げ作業を実施する。この際、開
口部４側でボルト５は梁１のフランジ１ａと略同じ幅だ
け外方に張り出す程度なので、荷揚げ作業の障害となる
ことはない。With the floor slab 3 thus formed, unloading work is carried out through the opened opening 4. At this time, since the bolt 5 only protrudes outward by approximately the same width as the flange 1a of the beam 1 on the side of the opening 4, it does not become an obstacle to the unloading operation.
荷揚げ作業完了後には、この開口部４を閉塞するように
梁１上に開口部４側のＦデッキ７を架設する。その後こ
のＦデッキ７上にコンクリートを打設して、ボルト５を
その中に埋め込んだ状態で床スラプ３に対してコンクリ
ートスラブ６を打ち継ぐことにより、床スラプ３に開設
した荷揚げ用開口部４を閉塞して平坦な面一の床を形成
できるようになっている。After the unloading work is completed, the F deck 7 on the opening 4 side is constructed on the beam 1 so as to close the opening 4. Thereafter, concrete is poured on this F deck 7, and a concrete slab 6 is poured onto the floor slab 3 with the bolts 5 embedded therein, thereby creating an opening 4 in the floor slab 3 for unloading. It is possible to close off the floor to form a flat, flush floor.
《発明の効果〉
以上要するに本発明によれば、次のような優れた効果を
発揮する。<<Effects of the Invention>> In summary, according to the present invention, the following excellent effects are achieved.
止枠を梁に接合したことにより止枠の設置とその除去作
業を廃止することができる。またシヤ・コネクタを、止
枠を介して床スラブから開口部に亘って略梁幅で延出さ
れるボルト・ナットで形成したことにより、シヤ・コネ
クタが荷揚げ作業の障害となることはなく、２回に亘る
曲げ伸ばし作業を廃止することができる。そしてこのよ
うに、ボルト◆ナ．ットで形成したシヤ・コネクタ並び
に止枠の接合作業を主体として打継ぎ作業を実施するこ
とができる。他方、シヤ・コネクタを、簡単に手に入れ
ることのできるボルト・ナットで構成したので、特別の
差筋等を準備する必要がない。By joining the stop frame to the beam, it is possible to eliminate the work of installing and removing the stop frame. In addition, since the shear connector is formed of bolts and nuts that extend approximately the width of the beam from the floor slab to the opening via the stopper frame, the shear connector does not become an obstacle to unloading work, and This eliminates the need for multiple bending and stretching operations. And like this, Bolt◆Na. It is possible to carry out splicing work mainly for joining work of shear connectors and retaining frames formed by cutting. On the other hand, since the shear connector is constructed from easily available bolts and nuts, there is no need to prepare special reinforcing bars or the like.
またボルト等はネジ面を有するので、短い長さで相当の
定着表面積乃至は係合表面積を稼ぐことができ、従来の
長い差筋と遜色のないアンカー機能を確保することがで
きる。Further, since the bolts have a threaded surface, a considerable anchoring surface area or engagement surface area can be obtained with a short length, and an anchor function comparable to that of a conventional long differential bar can be ensured.
第１図は本発明のコンクリートスラブの打継ぎ構造の開
口部開放時の側断面図、第２図はその正面図、第３図は
コンクリートスラブ打継ぎ後の側断面図、第４図〜第７
図は従来のコンクリートスラブの打継ぎ構造の構築を説
明する図である。
１・・・梁 ２・・・止枠３・・・床ス
ラプ ４・・・荷揚１ｆ用開口部５・・・ボル
ト ６・・・コンクリートスラプ９・・・ナ
ットFig. 1 is a side sectional view of the concrete slab splicing structure of the present invention when the opening is open, Fig. 2 is its front view, Fig. 3 is a side sectional view after the concrete slab is spliced, and Figs. 7
The figure is a diagram illustrating the construction of a conventional concrete slab pour joint structure. 1... Beam 2... Stopping frame 3... Floor slap 4... Opening for unloading 1f 5... Bolt 6... Concrete slap 9... Nut
Claims (1)
形成された荷揚げ用開口部に、上記止枠を介して上記床
スラブからシヤ・コネクタを延出しコンクリートを打設
して、上記床スラブにコンクリートスラブを打ち継ぐよ
うにしたコンクリートスラブの打継ぎ構造において、上
記止枠を上記梁に接合すると共に、上記シヤ・コネクタ
を、上記止枠を介して上記床スラブから上記開口部に亘
って略梁幅で延出されるボルト・ナットで形成して上記
止枠に接合したことを特徴とするコンクリートスラブの
打継ぎ構造。A shear connector is extended from the floor slab through the stop frame and concrete is poured into the unloading opening defined by the stop frame installed on the beam and formed in the floor slab. In a concrete slab joint structure in which concrete slabs are joined to each other, the stop frame is joined to the beam, and the shear connector is connected from the floor slab to the opening via the stop frame. A concrete slab pouring structure characterized in that it is formed of bolts and nuts that extend approximately the width of the beam and is connected to the above-mentioned retaining frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14930789A JPH0826600B2 (en) | 1989-06-14 | 1989-06-14 | Concrete slab joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14930789A JPH0826600B2 (en) | 1989-06-14 | 1989-06-14 | Concrete slab joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0317335A true JPH0317335A (en) | 1991-01-25 |
| JPH0826600B2 JPH0826600B2 (en) | 1996-03-13 |
Family
ID=15472272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14930789A Expired - Fee Related JPH0826600B2 (en) | 1989-06-14 | 1989-06-14 | Concrete slab joint structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0826600B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5557083A (en) * | 1993-07-14 | 1996-09-17 | Hitachi, Ltd. | Vacuum circuit breaker and electric contact |
| US5852266A (en) * | 1993-07-14 | 1998-12-22 | Hitachi, Ltd. | Vacuum circuit breaker as well as vacuum valve and electric contact used in same |
| US6248969B1 (en) | 1997-09-19 | 2001-06-19 | Hitachi, Ltd. | Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used therefor |
| US9016439B2 (en) | 2010-02-10 | 2015-04-28 | Mitsubishi Electric Corporation | Elevator hoisting machine braking apparatus |
-
1989
- 1989-06-14 JP JP14930789A patent/JPH0826600B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5557083A (en) * | 1993-07-14 | 1996-09-17 | Hitachi, Ltd. | Vacuum circuit breaker and electric contact |
| US5852266A (en) * | 1993-07-14 | 1998-12-22 | Hitachi, Ltd. | Vacuum circuit breaker as well as vacuum valve and electric contact used in same |
| US6048216A (en) * | 1993-07-14 | 2000-04-11 | Hitachi, Ltd. | Vacuum circuit breaker as well as vacuum valve and electric contact used in same |
| US6248969B1 (en) | 1997-09-19 | 2001-06-19 | Hitachi, Ltd. | Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used therefor |
| US9016439B2 (en) | 2010-02-10 | 2015-04-28 | Mitsubishi Electric Corporation | Elevator hoisting machine braking apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0826600B2 (en) | 1996-03-13 |
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| LAPS | Cancellation because of no payment of annual fees |