JPH03217541A - Column/slab jointing construction in flat slab structure - Google Patents
Column/slab jointing construction in flat slab structureInfo
- Publication number
- JPH03217541A JPH03217541A JP1339690A JP1339690A JPH03217541A JP H03217541 A JPH03217541 A JP H03217541A JP 1339690 A JP1339690 A JP 1339690A JP 1339690 A JP1339690 A JP 1339690A JP H03217541 A JPH03217541 A JP H03217541A
- Authority
- JP
- Japan
- Prior art keywords
- slab
- reinforcing bars
- column
- section
- state
- 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
Links
- 238000010276 construction Methods 0.000 title description 2
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 32
- 238000004080 punching Methods 0.000 claims abstract description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ）．産業上の利用分野
本発明は、補強部材の施工が簡単なフラットスラブ構造
物における柱・スラブ接合構造に関する．
（ｂ）．従来の技術
第３図は従来の柱・スラブ接合構造を示す正面図、
第４回は第３図の平面図である。DETAILED DESCRIPTION OF THE INVENTION (a). INDUSTRIAL APPLICATION FIELD The present invention relates to a column-slab joint structure in a flat slab structure in which reinforcing members can be easily constructed. (b). Conventional technology Figure 3 is a front view showing a conventional column/slab joint structure, and Part 4 is a plan view of Figure 3.
従来、フラットスラブ構造物１においては、柱２とスラ
ブ３との交差部１ａ付近で剪断破壊（パンチング破壊）
が生じる危険性が有ることから、第３図及び第４図に示
すように、井桁状に組み立てられた補強鉄骨５を柱２を
貫通する形で設け、剪断補強を行なっていた。Conventionally, in the flat slab structure 1, shear failure (punching failure) occurs near the intersection 1a between the column 2 and the slab 3.
Since there is a risk of this occurring, as shown in FIGS. 3 and 4, a reinforcing steel frame 5 assembled in the shape of a grid was installed to penetrate the column 2 to provide shear reinforcement.
（Ｃ）．発明が解決すべき問題点
しかし、補強鉄骨５は、その加工が煩雑で手間が掛るば
かりか、重量も重く、設置に際して、多くの人手が掛る
欠点が有る。また、設置後、コンクリートの打設が行わ
れるまでの間、補強鉄骨５を支持するために強固な特別
の仮止め手段を設ける必要が有るばかりか，コンクリー
トの打設に際しては、補強鉄骨５の下部にコンクリート
が回りに＜＜，交差部１ａのコンクリートの充填性が悪
化する不都合が有る。(C). Problems to be Solved by the Invention However, the reinforcing steel frame 5 has the disadvantage that it is not only complicated and time-consuming to process, but also heavy and requires a lot of manpower to install. In addition, it is not only necessary to provide special strong temporary fixing means to support the reinforcing steel frame 5 after installation until the concrete is poured, but also when concrete is poured, the reinforcing steel frame 5 must be If the concrete is surrounded by the lower part, there is a problem that the filling property of the concrete at the intersection 1a is deteriorated.
また、補強に、鉄筋を用いる方法も考えられるが、通常
の鉄筋では、十分な剪断補強を行なうことが出来ない不
都合が有る。Furthermore, a method of using reinforcing bars for reinforcement is also considered, but ordinary reinforcing bars have the disadvantage that sufficient shear reinforcement cannot be achieved.
本発明は、前述の欠点を解消すべく、設置に手間が掛ら
ず、軽量で、コンクリートの充填性も良好で、しかも十
分な剪断補強を行なうことのできるフラットスラブ構造
物における柱・スラブ接合構造を提供することを目的と
するものである。In order to eliminate the above-mentioned drawbacks, the present invention aims to provide a column-slab connection in a flat slab structure that does not take much time to install, is lightweight, has good concrete filling properties, and can provide sufficient shear reinforcement. The purpose is to provide structure.
（ｄ）．問題点を解決するための手段
即ち、本発明は、スラブ（３）を有し、該スラブ（３）
に柱（２）を立設してなるフラットスラブ構造物（１）
において、前記柱（２）及びスラブ（３）の交差部（１
ａ）周辺のスラブ（３）内に格子鉄筋（６Ａ、６Ｂ′）
を、先端を前記交差部（１ａ）に突呂させ、パンチング
破壊の危険断面を通過する形で、かつその格子面（６ａ
）を垂直に立てた形で設けて構成される。(d). Means for solving the problem, that is, the present invention has a slab (3), the slab (3)
Flat slab structure (1) with pillars (2) erected on the
, the intersection (1) of the pillar (2) and the slab (3)
a) Lattice reinforcing bars (6A, 6B') in the surrounding slab (3)
, with its tip thrust into the intersection (1a), passing through the dangerous cross section of punching failure, and its lattice surface (6a).
) is set up vertically.
なお、括弧内の番号等は、図面における対応する要素を
示す、便宜的なものであり、従って、本記述は図面上の
記載に限定拘束されるものではない。以下のｒ （ｅ）
．作用」の欄についても同様である。Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings. r (e) below
．． The same applies to the column "Effect".
？ｅ）．作用
上記した構成により、本発明は，格子鉄筋（６Ａ．６■
′）が、柱（２）周囲のスラブ（３）の危険断面（ＣＳ
）における剪断力を支持するように作用する。? e). Operation With the above-described configuration, the present invention can be applied to lattice reinforcing bars (6A.6■
') is the critical cross section (CS) of the slab (3) around the column (2)
) acts to support the shear forces at
（ｆ）．実施例 以下、本発明の実施例を図面に基づき説明する。(f). Example Embodiments of the present invention will be described below based on the drawings.
第１図は本発明によるフラットスラブ構造物における柱
・スラブ接合構造の１実施例を示す正面図、
第２図は第１図の平面図である。FIG. 1 is a front view showing one embodiment of a column-slab joint structure in a flat slab structure according to the present invention, and FIG. 2 is a plan view of FIG. 1.
フラットスラブ構造物１は，第１図に示すように，水平
方向に構築されたスラブ３を有しており、スラブ３には
、柱２が垂直方向に立設されている。スラブ３と柱２の
柱・スラブ交差部１ａ及びその周辺のスラブ３内には、
鉄筋が格子状に接合形成された格子鉄筋６が、その格子
状に形成された格子面６ａを垂直方向に立てた形で，第
２図に示すように、図中垂直及び水平方向に設置されて
おり、図中水平方向に設けられた６個の格子鉄筋６Ａは
、その１端部を交差部１ａ内に突出させた形で設けられ
ており、他端部は柱２から遠ざがる図中水平方向に伸延
し、交差部１ａ及び柱２の周辺に生じる危険断面ＣＳを
通過する形で設置されている。また、格子鉄筋６Ａの第
２図上下両側の危険断面ＯＳに囲まれた領域には、各８
本の格子鉄筋６Ｂが格子鉄筋６Ａに対して直交する形で
それぞれ設けられており，その内の中央部の各々２本の
格子鉄筋６１ｌ′は、その１端部を交差部１ａ内に突出
させた形で設けられている。また、格子鉄筋６！１，６
１１’の他端部は柱２がら遠ざがる図中上下方向に伸延
し、交差部１ａ及び柱２の周辺に生じる危険断面ＣＳを
通過する形で設置されている。なお、柱２及びスラブ３
には、当然のことながら図示しない、柱２及び梁３を構
築するために用いられる鉄筋が多数設けられている。As shown in FIG. 1, the flat slab structure 1 has a slab 3 constructed horizontally, and pillars 2 are vertically erected on the slab 3. In the pillar-slab intersection 1a of the slab 3 and the pillar 2 and in the surrounding slab 3,
As shown in FIG. 2, the lattice reinforcing bars 6, in which reinforcing bars are joined and formed in a lattice shape, are installed vertically and horizontally in the figure, with the lattice surfaces 6a formed in the lattice shape standing vertically. The six lattice reinforcing bars 6A installed in the horizontal direction in the figure are provided with one end protruding into the intersection 1a, and the other end moving away from the pillar 2. It extends horizontally in the figure and is installed so as to pass through the dangerous cross section CS that occurs around the intersection 1a and the pillar 2. In addition, in the area surrounded by the dangerous cross section OS on both the upper and lower sides of the lattice reinforcing bar 6A in FIG.
Two lattice reinforcing bars 6B are provided perpendicularly to the lattice reinforcing bars 6A, and each of the two lattice reinforcing bars 61l' in the center has one end protruding into the intersection 1a. It is set up in the form of In addition, lattice reinforcement 6!1,6
The other end portion 11' extends away from the column 2 in the vertical direction in the figure, and is installed so as to pass through the intersection 1a and the dangerous cross section CS that occurs around the column 2. In addition, pillar 2 and slab 3
Of course, there are many reinforcing bars (not shown) used to construct the columns 2 and beams 3.
フラットスラブ構造物１は，以上のような構成を有する
ので、格子鉄筋６により、スラブ３の危険断面ＣＳに生
じる剪断破壊に繋がる剪断応カは支持され、スラブ３の
パンチング破壊は未然に防止される。格子鉄筋６は、全
体が格子状に形成されているので，その格子面６ａを立
てた状態で設置することにより、スラブ３に生じる剪断
方に対して高い剛性を発揮することが出来る。Since the flat slab structure 1 has the above configuration, the shear stress that leads to shear failure occurring in the critical cross section CS of the slab 3 is supported by the lattice reinforcing bars 6, and punching failure of the slab 3 is prevented. Ru. Since the lattice reinforcing bars 6 are entirely formed in a lattice shape, by installing the lattice reinforcing bars 6 with the lattice surfaces 6a upright, high rigidity can be exhibited against the shear that occurs in the slab 3.
なお、格子鉄筋６の設置態様は、格子面６ａを垂直に立
てた状態で危険断面ｃＳを通過させる形で設置するかぎ
りどのような態様で設置しても良い。Note that the lattice reinforcing bars 6 may be installed in any manner as long as they are installed so that the lattice surfaces 6a are vertically erected and pass through the dangerous section cS.
（ｇ）．発明の効果
以上説明したように本発明によれば、スラブ３を有し、
該スラブ３に柱２を立設してなるフラットスラブ構造物
１において、前記柱２及びスラブ３の交差部１ａ周辺の
スラブ３内に格子鉄筋６６、６Ｂ＋ を、先端を前記交
差部１ａに突出させ、パンチング破壊の危険断面を通過
する形で、かつその格子面６ａを垂直に立てた形で設け
て構成したので、フラットスラブ構造物１の柱２とスラ
ブ３との交差部１ａ周辺のスラブ３に生じる剪断応力は
、格子鉄筋６Ａ．６１１′ により効果的に支持され、
パンチング破壊の発生を未然に防止することが出来る。(g). Effects of the Invention As explained above, according to the present invention, the slab 3 is provided,
In a flat slab structure 1 in which pillars 2 are erected on the slab 3, lattice reinforcing bars 66, 6B+ are provided in the slab 3 around the intersection 1a of the pillar 2 and the slab 3, with their tips protruding into the intersection 1a. Since the lattice surface 6a of the flat slab structure 1 is constructed in such a manner that it passes through the cross section at risk of punching failure, and its lattice surface 6a stands vertically, the slab around the intersection 1a of the pillar 2 and the slab 3 of the flat slab structure 1 The shear stress generated in lattice reinforcing bars 6A. 611', effectively supported by
It is possible to prevent punching damage from occurring.
また、格子鉄筋６Ａ、（３ Ｂ＋は，鉄骨に比して軽量
であるのでその取扱及び設置が極めて容易であり、仮止
め手段も針金などの簡単なものでよく、作業性が良い。Furthermore, since the lattice reinforcing bars 6A and (3B+) are lighter than steel frames, they are extremely easy to handle and install, and the temporary fixing means may be simple, such as wire, and workability is good.
また、格子鉄筋６Ａ、６Ｉｌ′は格子状部材なので、補
強鉄骨５を用いた場合のように柱・スラブ交差部１ａ部
分を閉塞してしまうようなことが無く，スラブ３部分及
び交差部１ａに打設されるコンクリートの流通上の障害
となることは極力防止され、コンクリートの打設に際し
て、柱・スラブ交差部１ａのコンクリートの充填性を良
好な状態に維持することが出来、施工の信頼性に富む。In addition, since the lattice reinforcing bars 6A and 6Il' are lattice-like members, they do not block the column/slab intersection 1a unlike when the reinforcing steel frame 5 is used, and they do not block the column/slab intersection 1a. Obstacles in the flow of concrete to be placed are prevented as much as possible, and when concrete is placed, the filling property of concrete at the column/slab intersection 1a can be maintained in a good condition, increasing the reliability of construction. rich in
第１図は本発明によるフラットスラブ構造物における柱
・スラブ接合構造の１実施例を示す正面図、
第２図は第１図の平面図、
第３図は従来の柱・スラブ接合構造を示す正面図、
第４図は第３図の平面図である。
１・・・・・・フラットスラブ構造物
１ａ・・・・・・交差部
２・・・・・・柱
３・・・・・・スラブ
６Ａ．６Ｂ’・・・・・・格子鉄筋
６ａ・・・・・格子面
ＣＳ・・・・・・危険断面
第
１
図
１ ７ラ計スラフ１殉８一物
５
第
２
図Figure 1 is a front view showing one embodiment of the column-slab joint structure in a flat slab structure according to the present invention, Figure 2 is a plan view of Figure 1, and Figure 3 is a conventional pillar-slab joint structure. 4 is a plan view of FIG. 3. 1...Flat slab structure 1a...Intersection 2...Column 3...Slab 6A. 6B'... Lattice reinforcing bar 6a... Lattice surface CS... Dangerous cross section 1st Figure 1 7 la total slough 1 Marty 8 One thing 5 Figure 2
Claims (1)
ラブ構造物において、 前記柱及びスラブの交差部周辺のスラブ内に格子鉄筋を
、先端を前記交差部に突出させ、パンチング破壊の危険
断面を通過する形で、かつその格子面を垂直に立てた形
で設けて構成したフラットスラブ構造物における柱・ス
ラブ接合構造。[Claims] In a flat slab structure having a slab and pillars erected on the slab, lattice reinforcing bars are provided in the slab around the intersections of the pillars and the slabs, the tips of which protrude into the intersections. Column-slab joint structure in a flat slab structure constructed by passing through the cross section at risk of punching failure and with its lattice plane standing vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1339690A JPH03217541A (en) | 1990-01-23 | 1990-01-23 | Column/slab jointing construction in flat slab structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1339690A JPH03217541A (en) | 1990-01-23 | 1990-01-23 | Column/slab jointing construction in flat slab structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03217541A true JPH03217541A (en) | 1991-09-25 |
Family
ID=11831954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1339690A Pending JPH03217541A (en) | 1990-01-23 | 1990-01-23 | Column/slab jointing construction in flat slab structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03217541A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100469961B1 (en) * | 2002-05-07 | 2005-02-02 | 주식회사 청조 | Steel reinforcing cage and reinforcing method of construction using steel reinforcing cage and steel fiber concrete for soft ground |
| KR20050021611A (en) * | 2003-08-19 | 2005-03-07 | 송진규 | Apparatus for enhancing shear strength of column slab connection part and structure thereof using the same |
| KR100659471B1 (en) * | 2003-11-24 | 2006-12-20 | 동부건설 주식회사 | Shear Reinforcement Structure of Slab - Column Connection |
-
1990
- 1990-01-23 JP JP1339690A patent/JPH03217541A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100469961B1 (en) * | 2002-05-07 | 2005-02-02 | 주식회사 청조 | Steel reinforcing cage and reinforcing method of construction using steel reinforcing cage and steel fiber concrete for soft ground |
| KR20050021611A (en) * | 2003-08-19 | 2005-03-07 | 송진규 | Apparatus for enhancing shear strength of column slab connection part and structure thereof using the same |
| KR100659471B1 (en) * | 2003-11-24 | 2006-12-20 | 동부건설 주식회사 | Shear Reinforcement Structure of Slab - Column Connection |
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