JPS59145855A - Floor construction using precast panel - Google Patents
Floor construction using precast panelInfo
- Publication number
- JPS59145855A JPS59145855A JP58018138A JP1813883A JPS59145855A JP S59145855 A JPS59145855 A JP S59145855A JP 58018138 A JP58018138 A JP 58018138A JP 1813883 A JP1813883 A JP 1813883A JP S59145855 A JPS59145855 A JP S59145855A
- Authority
- JP
- Japan
- Prior art keywords
- precast
- cast
- place concrete
- boards
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Panels For Use In Building Construction (AREA)
- Floor Finish (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は梁間に掛は渡したプレキャスト板とその上面に
打設する現場打コンクリートとを一体化させて合成床と
なすプレキャスト板を用いた床工法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a floor construction method using precast boards in which a composite floor is formed by integrating a precast board hung between beams and cast-in-place concrete poured on the top surface of the precast board.
従来、PCコンクリート製のプレキャスト板を用いた床
工法においては、梁間に掛は渡したプレキャスト板の上
面に現場打コンクリートを打設しているところである。Conventionally, in the floor construction method using precast boards made of PC concrete, cast-in-place concrete is placed on the upper surface of the precast board passed between the beams.
またコンクリート構造物の応力度は一般に厚さの二乗に
比例することが知られている。従ってプレキャスト板の
上面に現場打コンクリートを打設した場合、両者が完全
一体となっているときには、両者を重ねた厚さを応力度
算定のための一構造物厚さとなし得るが、両者の結合が
不充分な場合にはプレキャスト板の応力度のみで全体の
応力度の算定をしなければならない。It is also known that the stress level of concrete structures is generally proportional to the square of the thickness. Therefore, when cast-in-place concrete is placed on the top surface of a precast board, if the two are completely integrated, the thickness of the two overlapped can be regarded as one structure thickness for stress calculation, but the bond between the two If the stress is insufficient, the overall stress must be calculated using only the stress of the precast board.
而して、平滑なプレキャスト板の上面に単に現場打コン
クリートを打設した場合には両者の結合が充分でなく、
結果として必要な応力度を得るためにプレキャスト板の
厚さが大きくならざるを得ない。Therefore, if cast-in-place concrete is simply placed on the top surface of a smooth precast board, the bond between the two will not be sufficient;
As a result, the thickness of the precast plate must be increased in order to obtain the necessary stress level.
かかる点に着目し、プレギヤスト板と現場打コンクリー
トを一体化し、応力度の算定に際して全体の厚さを一体
の構造物として考慮し得る方法として断面が略三角形の
箭筋の二辺をプレキャスト板肉に埋め込み残りの一辺を
プレキャスト板の表面に露出させておき、これを現場打
コンクリート内に埋め込んで両者を一体化させる合成床
工法が開発されている。Focusing on this point, we created a precast plate with two sides of a bamboo bar with an approximately triangular cross section as a method to integrate the precast plate and cast-in-place concrete, and to consider the overall thickness as an integrated structure when calculating the stress level. A synthetic floor construction method has been developed in which the remaining side of the precast board is exposed on the surface of the precast board, and this is embedded in cast-in-place concrete to integrate the two.
しかし、この従来工法はプレキャスト板の表面に龍筋の
一部を突出させるものであるため、プレキャスト板の連
続成形ができず、製造コストが高(、しかも保管や運搬
及び設置の際に突出している簡筋が変形し易いため取り
扱いを慎重に行わなければならず作業性にも問題があっ
た。However, in this conventional method, a portion of the dragon stripes protrude from the surface of the precast board, making it impossible to continuously form the precast board, resulting in high manufacturing costs (in addition, the dragon strips protrude during storage, transportation, and installation). Since the simple reinforcements in the mold are easily deformed, they must be handled carefully, and there are also problems with workability.
本発明は上述の如き従来の問題にかんがみ、成形が容易
で廉価なプレキャスト板を使用し、しかも床の構築時に
は何ら特別の部材ないし工程を加えることなく容易に施
行することができ、しかもプレキャスト板と現場打コン
クリートの一体化が確実に得られ、全体を一体成形した
床と同様の厚さで必要な応力度が得られるプレキャスト
板を用いた床工法の提供を目的とし、その要旨とすると
ころは鉄骨もしくはコンクリート製の梁間にコンクリー
ト製のプレキャスト板を掛は渡し、その上面に現場打コ
ンクリートを打設するプレキャスト板を用いた床工法に
おいて、前記プレキャスト板はその表面に多数の凹陥部
を一体に有するものを使用し、該凹陥部内に前記現場打
コンクリートが一体に打ち込まれることによってシャコ
ツターとしての役目を果させて該プレキャスト板と現場
打コンクリートを一体化させ、力学的に合成された床と
なすことを特徴としてなるプレキャスト板を用いた床工
法に存する。In view of the above-mentioned conventional problems, the present invention uses a precast board that is easy to form and is inexpensive, and can be easily implemented without adding any special members or processes when constructing a floor. The purpose of this project is to provide a floor construction method using precast boards that reliably integrates concrete and cast-in-place concrete, and that provides the necessary stress level with the same thickness as a floor that is integrally formed. This is a floor construction method using precast boards, in which precast concrete boards are hung between steel frames or concrete beams, and cast-in-place concrete is poured on top of the boards. The cast-in-place concrete is integrally poured into the recessed part, thereby acting as a shako starter and integrating the precast board and the cast-in-place concrete, resulting in a mechanically synthesized floor. This method consists of a floor construction method using precast boards.
次に本発明の実施例を図面について説明する。Next, embodiments of the present invention will be described with reference to the drawings.
まず第1図〜第4図に基づき本発明に使用するコンクリ
ート製のプレキャスト板について説明する。First, a concrete precast board used in the present invention will be explained based on FIGS. 1 to 4.
第1図は本発明に使用するプレキャスト板の一例の部分
斜視図であり、このプレキャスト板Aはその肉厚内に長
手方向に向けて複数の中空孔1゜1・・・・・・が貫通
開口されているとともに、上下位置に多数本のPC1線
2,2・・・・・・が緊張されて埋設されている。Fig. 1 is a partial perspective view of an example of a precast board used in the present invention, and this precast board A has a plurality of hollow holes 1°1... passing through it in the longitudinal direction within its wall thickness. It is open, and a large number of PC1 wires 2, 2, . . . are buried under tension in the upper and lower positions.
一方上面には多数の浅床の凹陥部3,3・・・・・・が
形成されている。この凹陥部3,3.は−例として第2
図に示すように底部の径を小さくしたテーパー状に形成
し、その大きざは開口部直径aを25mll11底部直
径すを17m ra 1深さhを5n+iテ一パー面の
角度αを45°としている。On the other hand, a large number of shallow recesses 3, 3, . . . are formed on the upper surface. These concave portions 3, 3. - As an example, the second
As shown in the figure, it is formed into a tapered shape with a smaller diameter at the bottom, and its size is as follows: opening diameter a is 25 ml, bottom diameter is 17 m ra, depth h is 5n+i, and the angle α of the tapered surface is 45°. There is.
なお、この凹陥部3の形状は上述した円形の他、三角、
四角、その他の多角形状でもよく、またその大きさも大
小に変形してもよいものである。In addition to the circular shape mentioned above, the shape of this recessed part 3 is triangular,
It may be a square or other polygonal shape, and its size may also be changed.
また本発明に使用するプレキャスト板は上述の他、第3
図に示すプレキャスト板へ−のように中空孔を有しない
中実の形状となし、長手方向にPC鋼線2を緊張埋設し
、表面に多数の凹陥部3を形成したものでもよいもので
ある。In addition to the above-mentioned precast boards used in the present invention, the precast boards used in the present invention include
As shown in the figure, the precast plate may have a solid shape with no hollow holes, the PC steel wire 2 may be buried under tension in the longitudinal direction, and a number of recesses 3 may be formed on the surface. .
この各プレキャスト板A、A′の製造は一例として床面
等の平面型上にPC鋼線2を緊張しておき、これを埋め
込むようにコンクリートを打設しつつ型枠を移動させる
即時脱型方式により成形し、表面を平らに仕上げた後、
その上面に第4図に示す如き円形ドラム4の外周に多数
の突起5,5・・・・・・を突設した凹陥部成形型を転
接させて凹陥部3の型付けを順次行う。For example, the production of each of the precast plates A and A' involves immediately demolding by tensioning the PC steel wire 2 on a flat mold such as a floor surface, and moving the formwork while pouring concrete to embed it. After molding using the method and finishing the surface flat,
A concave molding die having a large number of protrusions 5, 5, . . . protruding from the outer periphery of a circular drum 4 as shown in FIG.
このようにして表面に型付けを行った後、静置して硬化
させ、−牢以上の強度に達した後、必要な長さに切断し
て単位長さのプレキャスト板となすものである。After the surface is molded in this manner, it is allowed to stand and harden to reach a strength greater than or equal to that of a steel, and is then cut into a required length to form a precast board of unit length.
次に上述の如く形成されたプレキャスト板Aを使用して
合成床を構築する工程について説明する。Next, the process of constructing a composite floor using the precast board A formed as described above will be explained.
まずプレキャスト板Aを一定間隔毎に横架した梁間に掛
は渡す。このときプレキャスト板Aの端部側において梁
がコンクリート梁である場合には第5図に示すように梁
1oの上面にアンカー鉄筋11を突出させ、その両側に
プレキャスト板A。First, the precast boards A are hung horizontally at regular intervals between the beams. At this time, if the beam is a concrete beam on the end side of the precast plate A, anchor reinforcing bars 11 are made to protrude from the upper surface of the beam 1o, as shown in FIG.
Aの端部を載置する。また梁が鉄骨である場合には第6
図に示すように梁12の中央にスタッド13を突設して
おき、その両側にプレキャスト板A。Place the end of A. Also, if the beam is a steel frame, the 6th
As shown in the figure, a stud 13 is provided protruding from the center of the beam 12, and precast plates A are placed on both sides of the stud 13.
Aの端部を載置する。Place the end of A.
このようにしてプレキャスト板A、A・・・・・・を多
数掛は渡した後、その上面に現場打コンクリート用の鉄
筋15を組み、現場打コンクリ−1−8をプレキャスト
板A、A間及びその上面全面に打設し、合成床となす。After passing a large number of precast plates A, A, etc. in this way, reinforcing bars 15 for cast-in-place concrete are installed on the top surface, and cast-in-place concrete 1-8 is placed between precast plates A and A. and pour it over the entire upper surface to form a composite floor.
このようにして構築された合成床は現場打コンクリート
Bがプレキャスト板へ表面の凹陥部3゜3・・・・・・
に入り込んで硬化することによって、凹陥部3,3・・
・・・・内のコンクリートがシャコツターとなりプレキ
ャスト板Aと現場打コンクリートBとが一体化され、垂
直方向の荷重による曲げに対し、一体となって作用する
こととなる。またプレキャスト板A相互間は前述したシ
ャコツターの作用によって現場打コンクリートを介して
一体化される。In the composite floor constructed in this way, the cast-in-place concrete B has a concave area of 3°3 on the surface of the precast board.
By entering and hardening, the concave portions 3, 3...
The concrete inside acts as a bulge starter, and the precast board A and cast-in-place concrete B are integrated, and act as one against bending due to vertical loads. Moreover, the precast plates A are integrated with each other via cast-in-place concrete by the action of the above-mentioned shako starter.
LL
第7図に示す如き厚さ h、が1001111S幅Xが
500mmのPCプレキャスト板Aの表面に第2図及び
その説明に示す大きさ及び形状の凹陥部3を幅方向ピッ
チ351III11長手方向ピッチ44mn+の間隔に
して千鳥状に一面を形成し、その上面に厚さh2が80
mmの場所打コンクリートBを打設して全体の厚さhを
1801111Ilとした合成床試験片を製造し、これ
と前記PCプレキャスト板A単体とについて短期戟荷実
験を行ったところ第1表の如くであった。LL As shown in Fig. 7, the thickness h is 1001111S on the surface of the PC precast board A whose width Form one surface in a staggered manner with intervals of , and a thickness h2 of 80
A composite floor test piece was produced by pouring cast-in-place concrete B of mm in thickness to a total thickness h of 1801111Il, and a short-term test was conducted on this and the PC precast board A alone, as shown in Table 1. It was like that.
また、第1表中の合成床試験片N011についでたわみ
試験を行ったところ、第8図のグラフの如くであり、打
4flざ面の滑り母は第9図のグラフ、断面の平面保持
は第10図のグラフの如くであつり・
/
/
挾」[
〔1〕強度と破壊性状について
ひび割れ荷重および最大耐力とも実験値は一体としての
計算値を上廻っており、強度の面から床板の一体性が確
認された。In addition, when we conducted a deflection test on synthetic floor test piece No. 011 in Table 1, the results were as shown in the graph in Figure 8. As shown in the graph in Figure 10, the experimental values for both cracking load and maximum yield strength exceed the calculated values for the whole unit. Unity was confirmed.
また破壊性状も通常の曲げまたはぜん断破壊であり、打
継ぎ面の破壊現象は終局まで認められず、破壊性状から
も一体性が確認された。Furthermore, the fracture behavior was normal bending or shear fracture, and the fracture phenomenon of the joint surface was not observed until the end, and the integrity was confirmed from the fracture behavior.
C)荷重変形曲線について
いずれの実験値も弾性剛性は計算値を上廻っている。ま
た、曲線の膜層特性をみても打継ぎ面の一体性が失われ
たような減少は認められない。C) Regarding the load-deformation curve, all experimental values show that the elastic stiffness exceeds the calculated value. Also, when looking at the film layer characteristics of the curve, no reduction that would cause loss of integrity of the joint surface was observed.
これらのことから床板の一体性が確認された。These confirmed the integrity of the floorboards.
(3) ひび割れ性状について
ひび割れは打継ぎ面をほぼ一直線状に通過しており、打
継ぎ面に沿った進展は認められない。従ってひひ割れ性
状の面からも床板の一体性が確認された。(3) Regarding the crack properties, the crack passes through the splicing surface in almost a straight line, and no progress is observed along the splicing surface. Therefore, the integrity of the floorboard was confirmed from the viewpoint of crack properties.
(イ)打継ぎ面のすべりについて
打継ぎ面のすへりはOないし0.01111m以下であ
り、一体性が保持されていることが確認された。(a) Regarding the slippage of the joint surface, the slippage of the joint surface was 0 to 0.01111 m or less, and it was confirmed that the integrity was maintained.
■ 平面保持性について
厚み方向の歪度のプロットの結果をみると、断面がほぼ
平面を保持していることが認められる。■ Regarding flatness retention, when looking at the results of plotting the skewness in the thickness direction, it is recognized that the cross section maintains almost a flatness.
従ってスパンクリート合成床板の一体性が確認された。Therefore, the integrity of the spuncrete composite floorboard was confirmed.
桔」L
以上にように、強度、剛性、破壊性状、ひび割れ性状、
打継ぎ面のすべり、断面の平面保持性のいずれの面から
も合成床板の構造的一体性が確認された。As mentioned above, strength, rigidity, fracture property, cracking property,
The structural integrity of the composite floorboard was confirmed from both the slippage of the joint surface and the ability to maintain the flatness of the cross section.
本発明は上述の如く構成され、プレキャスト板の表面に
多数の凹陥部を設けておき、その上面に場所打コンクリ
ートを打設して凹陥部に嵌り合う所行コンクリートにシ
ャコツターの役目を果させるようにしたことにより、実
験例に示されるように強固な一体化がなされ、施行に際
し、プレキャスト板と場所打コンクリートとの全体の厚
さを一体構造物の厚さとして強度の算定ができ、その結
果、コスト、作業性の面において、従来工法に比べて極
めて有利になったものである。The present invention is constructed as described above, and a large number of recesses are provided on the surface of a precast board, and cast-in-place concrete is poured on the upper surface of the precast board, so that the cast-in-place concrete that fits into the recesses serves as a stopper. As a result of this, a strong integration was achieved as shown in the experimental example, and during construction, the strength could be calculated by considering the total thickness of the precast board and cast-in-place concrete as the thickness of the integrated structure. This method is extremely advantageous compared to conventional construction methods in terms of cost and workability.
第1図はプレキャスト板の一例の部分斜視図、第2図は
凹陥部の拡大断面図、第3図はプレキャスト板の他の例
の部分斜視図、第4図は凹陥部成形型の断面図、第5図
はフレキヤス1〜板端部の設置状態の一例の部分断面図
、第6図は同梱の例の断面図、第7図は合成床試験片の
断面図、第8図はたわみ試験結果を示すグラフ、第9図
は打継ぎ面のずべり量を示タグラフ、第’I 0図は断
面の平面保持を示ずグラフである。
AI・・・・・フレキ1rスト板
B・・・・・・場所打コンクリート′)・・・・・・中
空孔2・・・・・・PC鋼線 3・・・・
−・凹陥部10.12・・・・・・梁。Fig. 1 is a partial perspective view of an example of a precast board, Fig. 2 is an enlarged sectional view of a recessed part, Fig. 3 is a partial perspective view of another example of a precast board, and Fig. 4 is a sectional view of a mold for forming a recessed part. , Fig. 5 is a partial cross-sectional view of an example of the installed state of flexible steel 1 to the end of the board, Fig. 6 is a cross-sectional view of an example of the bundled product, Fig. 7 is a cross-sectional view of a synthetic floor test piece, and Fig. 8 is a deflection The graphs showing the test results are as follows: Fig. 9 is a graph showing the amount of slippage of the joint surface, and Fig. 10 is a graph not showing the flatness of the cross section. AI...Flexible 1r strike plate B...Cast-in-place concrete')...Hollow hole 2...PC steel wire 3...
-・Concave portion 10.12...Beam.
Claims (1)
リート類のプレキャスト板を掛は渡し、その上面に現場
打コンクリートを打設するプレキャスト板を用いた床工
法において、前記プレキャスト板はその表面に多数の凹
陥部を一体に有するものを使用し、該凹陥部内に前記現
場打コンクリートが一体に打ち込まれることによってシ
ャコツターとしての役目を果させて該プレキャスト板と
現場打コンクリートを一体化させ、力学的に合成された
床となすことを特徴としてなるプレキャスト板を用いた
床工法。(1) In a floor construction method using precast boards, in which precast concrete boards are hung between steel beams or concrete beams, and cast-in-place concrete is poured on top of the boards, the precast boards have many recesses on their surfaces. The cast-in-place concrete is integrally poured into the recessed part to serve as a shako starter, and the precast plate and the cast-in-place concrete are integrated, and the cast-in-place concrete is mechanically synthesized. A floor construction method using precast boards that is characterized by being used as a floor.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58018138A JPS59145855A (en) | 1983-02-08 | 1983-02-08 | Floor construction using precast panel |
KR1019840000615A KR900006763B1 (en) | 1983-02-08 | 1984-02-07 | Floor construction using precast panel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58018138A JPS59145855A (en) | 1983-02-08 | 1983-02-08 | Floor construction using precast panel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59145855A true JPS59145855A (en) | 1984-08-21 |
JPS6347861B2 JPS6347861B2 (en) | 1988-09-26 |
Family
ID=11963239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58018138A Granted JPS59145855A (en) | 1983-02-08 | 1983-02-08 | Floor construction using precast panel |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS59145855A (en) |
KR (1) | KR900006763B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62606U (en) * | 1985-06-18 | 1987-01-06 | ||
JPH02261147A (en) * | 1989-03-31 | 1990-10-23 | Shimizu Corp | Structure of large reinforced concrete slub |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101415369B1 (en) * | 2012-04-26 | 2014-07-04 | 서울시립대학교 산학협력단 | Surface treatment method for increasing shear bond strength of precast concrete member manufactured by extrusion |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4864213U (en) * | 1971-11-22 | 1973-08-15 | ||
JPS5057223U (en) * | 1973-09-25 | 1975-05-29 | ||
JPS566844A (en) * | 1979-06-26 | 1981-01-24 | Koken Sekkei Kenkyusho Kk | Floor structure |
JPS57199615U (en) * | 1981-06-17 | 1982-12-18 |
-
1983
- 1983-02-08 JP JP58018138A patent/JPS59145855A/en active Granted
-
1984
- 1984-02-07 KR KR1019840000615A patent/KR900006763B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4864213U (en) * | 1971-11-22 | 1973-08-15 | ||
JPS5057223U (en) * | 1973-09-25 | 1975-05-29 | ||
JPS566844A (en) * | 1979-06-26 | 1981-01-24 | Koken Sekkei Kenkyusho Kk | Floor structure |
JPS57199615U (en) * | 1981-06-17 | 1982-12-18 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62606U (en) * | 1985-06-18 | 1987-01-06 | ||
JPH02261147A (en) * | 1989-03-31 | 1990-10-23 | Shimizu Corp | Structure of large reinforced concrete slub |
Also Published As
Publication number | Publication date |
---|---|
KR840007934A (en) | 1984-12-11 |
JPS6347861B2 (en) | 1988-09-26 |
KR900006763B1 (en) | 1990-09-21 |
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