JPH01223235A - Construction execution of iron reinforced concrete pillar - Google Patents
Construction execution of iron reinforced concrete pillarInfo
- Publication number
- JPH01223235A JPH01223235A JP4594388A JP4594388A JPH01223235A JP H01223235 A JPH01223235 A JP H01223235A JP 4594388 A JP4594388 A JP 4594388A JP 4594388 A JP4594388 A JP 4594388A JP H01223235 A JPH01223235 A JP H01223235A
- Authority
- JP
- Japan
- Prior art keywords
- column
- concrete
- pillar
- reinforced concrete
- doubled
- 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
- 239000011150 reinforced concrete Substances 0.000 title claims description 8
- 238000010276 construction Methods 0.000 title abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title 2
- 229910052742 iron Inorganic materials 0.000 title 1
- 230000002787 reinforcement Effects 0.000 claims abstract description 35
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 239000011372 high-strength concrete Substances 0.000 claims abstract description 10
- 239000011210 fiber-reinforced concrete Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 description 6
- 238000009415 formwork Methods 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011371 regular concrete Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (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）
本発明は鉄筋コーンクリート構造物における柱を上方へ
延長構成するための施工方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a construction method for extending columns upwardly in a reinforced concrete structure.
（従来の技術）
従来、鉄筋コンクリート構造物の柱主筋同士を上下方向
に接続する場合、ガス圧接継手あるいは特公昭５３−４
７６１４号公報に開示するようなスリーブ継手が一般的
である。(Prior art) Conventionally, when connecting column main reinforcements of reinforced concrete structures in the vertical direction, gas pressure joints or Japanese Patent Publication No. 53-4 were used.
Sleeve joints such as those disclosed in Japanese Patent No. 7614 are common.
（発明が解決しようとする課題）
このため、従来の継手構造では相応の工具を必要とする
ほか、ガス圧接の場合には天候に左右される欠点もあり
、熟練した施工者を選ぶ必要性と相俟って作業時間も長
くなる欠点がありた。(Problem to be solved by the invention) For this reason, conventional joint structures require appropriate tools, and in the case of gas pressure welding, there is also the disadvantage that it is affected by the weather, and it is necessary to select a skilled installer. This also had the disadvantage of lengthening the working time.
本発明は上記の事情に鑑み、その目的とするところは信
頼性の高い重ね継手構造が作業性よく廉価に得られる鉄
筋コンクリート柱の施工方法を提供することにある。In view of the above circumstances, an object of the present invention is to provide a method for constructing a reinforced concrete column that allows a highly reliable lap joint structure to be obtained with good workability and at a low cost.
（課題を解決するための手段）
上記の目的を達成するために本発明に係る鉄筋コンクリ
ート柱の施工方法は、柱主筋の上端が上階へ延長突出す
るように配筋した下階柱体の上端位置までコンクリート
を打設し、次に上階柱体の柱主筋を該下階柱体の上端面
から上方へ延長突出している柱主筋に重複隣接させて配
筋し、この重複部分に高強度コンクリートを打ち込んで
該下階柱体と該上階柱体の柱主筋同士を重ね継手構造に
よって一体化し、然る後に該重ね継手した上方に普通コ
ンクリートを打設するのである。また同様の目的で前記
下階柱体と前記上階柱体との柱主筋の重ね継手部分にの
み繊維補強コンクリートを打設してもよい。(Means for Solving the Problems) In order to achieve the above object, the method for constructing a reinforced concrete column according to the present invention is to provide reinforcement at the upper end of a lower floor column body in which reinforcement is arranged so that the upper end of the column main reinforcement extends and projects to the upper floor. Concrete is poured to the desired position, and then the main column reinforcement of the upper floor column is overlapped and adjacent to the column main reinforcement that extends upward from the upper end of the lower floor column, and high-strength reinforcement is placed in this overlapping area. Concrete is poured to integrate the column reinforcements of the lower and upper floor columns with a lap joint structure, and then regular concrete is poured above the lap joint. Further, for the same purpose, fiber-reinforced concrete may be cast only at the lap joint of the column main reinforcement between the lower floor column and the upper floor column.
（作 用）
本発明は以上のように施工するので、圧接継手の如く天
候に左右されずに施工できると同時に、重ね継手部分に
高強度コンクリートを使用した場合には付着強度が強い
ので、鉄筋の性能を充分に生かせる。また、重ね継手部
分に繊維補強コンクリートを使用した場合には、コンク
リート中の繊維が柱自体に作用する曲げ応力に対応する
とともに重ね継手とした部分の柱主筋をよく拘束する。(Function) Since the present invention is constructed as described above, it can be constructed without being affected by the weather like pressure welding joints, and at the same time, when high-strength concrete is used for the lap joints, the adhesion strength is strong, so reinforcing steel Take full advantage of its performance. In addition, when fiber-reinforced concrete is used in the lap joint, the fibers in the concrete can cope with the bending stress acting on the column itself, and also restrain the main reinforcement of the column in the lap joint.
普通コンクリートならびに重ね継手部分に打ち込むコン
クリートはそれぞれ順次に打設されるので各打ち込み高
さが低くなり、骨材の落下分離が生じに＜＜、充填性を
高めるための締め固め作業も容易になる。Regular concrete and concrete poured into lap joints are poured one after the other, so the height of each pour is low, which prevents the aggregate from falling and separating, and also makes compaction work easier to improve filling properties. .
（実 施 例）
以下、本発明の好適な図示、実施例を参照しながら詳細
に説明する。(Examples) Hereinafter, the present invention will be described in detail with reference to preferred illustrations and examples.
第１図乃至第５図は施工の手順に従って順次に施工の過
程を示したもので、第１図は下階柱体１の上端部が柱・
梁接合部になっていて、梁方向および桁方向へ十字形に
渡した梁２の上に上階の床スラブ３が施工された過程で
あって、下階柱体１の柱主筋４はスラブ３面から上方へ
延長突出している。Figures 1 to 5 show the construction process sequentially according to the construction procedure. In Figure 1, the upper end of the lower floor column 1 is
This is a process in which the floor slab 3 of the upper floor was constructed on the beam 2 which is a beam joint and cross-shaped in the direction of the beam and the direction of the girder, and the main column reinforcement 4 of the column body 1 of the lower floor is in the slab. It extends and protrudes upward from three sides.
上記床スラブ３の上に更に上層階を構築するための配筋
を行う。第２図ではこの配筋を予め地上で先組みし、こ
れを床スラブ３上に吊り降したものであって、上階柱体
を構成するための柱主筋４ａの上端部には更に上層階を
構成する柱主筋に重ね継ぎするための余長αを残して梁
主筋５を交差配筋している。Reinforcement is then placed on top of the floor slab 3 to construct an upper floor. In Fig. 2, this reinforcement is pre-assembled on the ground and suspended onto the floor slab 3. The beam main reinforcements 5 are cross-reinforced, leaving an extra length α for lap splicing to the column main reinforcements composing the beam.
この柱主筋４ａの基端部は下階柱体１の柱主筋４の突出
部分に重複隣接させ、番線で互いを仮に緊結している。The base end portions of the main column reinforcements 4a overlap and adjoin the protruding portions of the main column reinforcements 4 of the lower floor column body 1, and are temporarily connected to each other by wires.
この重複部分の長さは柱主筋４゜４ａの直径の４０倍以
上の長さが必要とされているので、この例ではＤ３５を
使用しているから余長αは１４００ ｌｌ１ｍにした。The length of this overlapping portion is required to be at least 40 times the diameter of the column main reinforcement 4°4a, so in this example D35 is used, so the extra length α is set to 1400 11 m.
次に第３図の如く、柱主筋４．４ａが重複する部分に高
さ１４００ｍ■のせき板で柱型枠６を組み、この型枠６
内に高強度コンクリートを打設する。Next, as shown in Fig. 3, a column formwork 6 is constructed using a weir plate with a height of 1400 m in the area where the main column reinforcements 4.4a overlap, and this formwork 6 is
High-strength concrete will be poured inside.
７日ぐらい養生した後に脱型すると第４図のようになり
、下階柱体１と上階柱体７を一体的に結合する重ね継手
部分８が得られる。When removed from the mold after curing for about 7 days, it becomes as shown in FIG. 4, and a lap joint portion 8 that integrally connects the lower column 1 and the upper column 7 is obtained.
高強度コンクリートはＳ Ｌ ’８ ａｎ乃至１２ＣＩ
１１で空気連行量４％以下程度の生コンクリートにβ−
ナフタリンスルホン酸ホルムアルデヒド高縮合物塩やメ
ラミンスルホン酸ホルムアルデヒド高縮合物塩等の減水
剤を加えて流動化させてから打ち込むものである。従っ
て、打ち込み高さが１４００ Ｉｒｍ位め所にＳ Ｌ
１５ｃｍ程度に流動化した状態で打ち込むので充填性は
極めて良好であり、打設は短時間で終る。High strength concrete is S L '8 an to 12CI
11 for fresh concrete with an air entrainment amount of 4% or less.
A water reducing agent such as a naphthalene sulfonic acid formaldehyde high condensate salt or a melamine sulfonic acid formaldehyde high condensate salt is added to fluidize it before pouring. Therefore, when the driving height is about 1400 Irm, S L
Since it is poured in a fluidized state to a thickness of about 15 cm, the filling properties are extremely good, and the casting can be completed in a short time.
この高強度コンクリートの代りに繊維補強コンクリート
を使用してもよい。これは普通のポルトランドセメント
に直径１５ミクロン、長さ３〜６關の炭素繊維またはア
ラミド繊維、ビニロン繊維等を混入したものである。Fiber reinforced concrete may be used instead of this high strength concrete. This is ordinary Portland cement mixed with carbon fibers, aramid fibers, vinylon fibers, etc., each having a diameter of 15 microns and a length of 3 to 6 inches.
然る後に第５図の如く上階柱体７の部分において重ね継
手部分８から上の方に普通コンクリート９を打設すれば
よい。この普通コンクリート９の打設時期については型
枠６を脱型した後に限らず、普通コンクリート９が型枠
６内のコンクリートの性質を変えることがない程度にな
った状態に達していればよい。Thereafter, as shown in FIG. 5, ordinary concrete 9 may be poured upward from the lap joint portion 8 in the upper floor column 7 portion. The timing of pouring the ordinary concrete 9 is not limited to after the formwork 6 has been demolded, but it is sufficient that the ordinary concrete 9 has reached a state where the properties of the concrete within the formwork 6 are not changed.
（発明の効果）
本発明は以上のように施工するので、次の効果を奏する
。(Effects of the Invention) Since the present invention is implemented as described above, the following effects are achieved.
柱主筋同士を上下方向に重ね継手で結合するので、ガス
圧接、溶接を伴わない分天候に左右されずに工期を短縮
できるし、また上層階に使用する柱・梁を予め先組みす
ることも可能であり、作業性に優れる。そして、重ね継
手部分に高強度コンクリートまたは繊維補強コンクリー
トを使用するので、高強度コンクリートの場合には往生
筋との付着性能がよいので充分な定着が得られ、鉄筋性
能を充分に発揮するとともに鉄筋の抜は出しがなくなる
ので信頼性の高い重ね継手構造を実現するし、また繊維
補強コンクリートの場合には、コンクリート自体の引っ
張り強度が高く、鉄筋をよく拘束して柱主筋の性能を充
分に活用できるのである。Since the main column reinforcements are connected vertically with overlap joints, the construction period can be shortened without being affected by the weather since gas pressure welding and welding are not involved, and the columns and beams used on the upper floors can be pre-assembled in advance. possible and has excellent workability. In addition, since high-strength concrete or fiber-reinforced concrete is used for the lap joints, high-strength concrete has good adhesion performance with the rebar reinforcement, so sufficient anchorage is obtained, and the reinforcement performance is fully demonstrated and the reinforcement Since there is no pull-out, a highly reliable lap joint structure can be achieved, and in the case of fiber-reinforced concrete, the tensile strength of the concrete itself is high, restraining the reinforcing bars well and making full use of the performance of the column main reinforcement. It can be done.
更に、コンクリートは重ね継手部分にのみ高強度コンク
リートを使用するので、価格的にも圧接。Furthermore, since high-strength concrete is used only in the lap joints, pressure welding is also cost-effective.
溶接より安く済み、打ち込み高さは重ね継事部分と普通
コンクリート部分とに分けるので、打ち込み高さが結果
的に低く、材料分離（骨材の沈下）が少なくて締め固め
の良いコンクリートが得られる。It is cheaper than welding, and since the driving height is divided into the lap joint part and the normal concrete part, the driving height is lower, resulting in less material separation (settlement of aggregate) and better compaction of concrete. .
図は何れも本発明の一実施例を施工手順に従つて順次に
第１図から第５図までに示した側面図である。
１・・・・・・下階柱体 ２・・・・・・梁３・・
・・・・床スラブ ４・・・・・・柱主筋５・・・
・・・梁主筋 ６・・・・・・型枠７・・・・・
・上階柱体 ８・・・・・・重ね継手部分９・・・
・・・普通コンクリート
特許出願人 株式会社 大 林 紙代 理
人 弁理士 −色 健 軸向
弁理士 松 本 雅 利第２図
ｊ［３図 第４図
ｍ５図
ｄEach of the drawings is a side view showing an embodiment of the present invention sequentially from FIG. 1 to FIG. 5 in accordance with the construction procedure. 1... Lower floor column body 2... Beam 3...
...Floor slab 4...Column main reinforcement 5...
... Beam main reinforcement 6 ... Formwork 7 ...
・Upper floor column body 8... overlap joint part 9...
... Ordinary concrete patent applicant Osamu Obayashi Co., Ltd.
People Patent Attorney - Color Ken Axis
Patent Attorney Masatoshi Matsumoto Figure 2 j [Figure 3 Figure 4 m5 Figure d
Claims (2)
た下階柱体の上端位置までコンクリートを打設し、次に
上階柱体の柱主筋を該下階柱体の上端面から上方へ延長
突出している柱主筋に重複隣接させて配筋し、この重複
部分に高強度コンクリートを打ち込んで該下階柱体と該
上階柱体の柱主筋同士を重ね継手構造によって一体化し
、然る後に該重ね継手した上方に普通コンクリートを打
設することを特徴とする鉄筋コンクリート柱の施工方法
。(1) Concrete is poured to the top of the lower floor columns, which are arranged so that the upper ends of the main column reinforcements extend and protrude to the upper floor, and then the main column reinforcements of the upper floor columns are placed on top of the lower floor columns. Reinforcement is placed so that it overlaps and adjoins the column main reinforcement that extends upward from the end face, and high-strength concrete is poured into this overlapped part, and the column main reinforcement of the lower floor column and the upper floor column are integrated by a lap joint structure. A method for constructing a reinforced concrete column, which comprises the steps of: forming a reinforced concrete column, and then pouring ordinary concrete above the lap joint.
手部分にのみ繊維補強コンクリートを打設することを特
徴とする請求項１記載の鉄筋コンクリート柱の施工方法
。(2) The method for constructing a reinforced concrete column according to claim 1, characterized in that fiber-reinforced concrete is poured only at the lap joint portion of the column main reinforcement between the lower floor column body and the upper floor column body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4594388A JPH0699955B2 (en) | 1988-03-01 | 1988-03-01 | Construction method of reinforced concrete columns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4594388A JPH0699955B2 (en) | 1988-03-01 | 1988-03-01 | Construction method of reinforced concrete columns |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01223235A true JPH01223235A (en) | 1989-09-06 |
| JPH0699955B2 JPH0699955B2 (en) | 1994-12-12 |
Family
ID=12733356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4594388A Expired - Lifetime JPH0699955B2 (en) | 1988-03-01 | 1988-03-01 | Construction method of reinforced concrete columns |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0699955B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021179075A (en) * | 2020-05-11 | 2021-11-18 | 大成建設株式会社 | Concrete member structure |
-
1988
- 1988-03-01 JP JP4594388A patent/JPH0699955B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021179075A (en) * | 2020-05-11 | 2021-11-18 | 大成建設株式会社 | Concrete member structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0699955B2 (en) | 1994-12-12 |
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