JPH0516333Y2

JPH0516333Y2 -

Info

Publication number: JPH0516333Y2
Application number: JP8764485U
Authority: JP
Priority date: 1985-06-12
Filing date: 1985-06-12
Publication date: 1993-04-28
Anticipated expiration: 2000-06-12
Also published as: JPS61203913U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は中空スラブに用いるPC床板に関する。[Detailed explanation of the idea] (Industrial application field) This invention relates to PC floorboards used in hollow slabs.

（従来の技術）中空スラブに用いるPC床板には、床板の上面
に複数の一定長のコンクリートリブを間隔を置い
て突設し、さらにこのリブに交差する床板の幅方
向に延びたリブがある。この床板の幅方向の両側
のはね出し部は、上記リブと、はね出し部内に配
筋した補強筋とで仮設時の後打ちコンクリートの
荷重を受けている。(Prior art) PC floorboards used for hollow slabs have a plurality of concrete ribs of a certain length protruding from the upper surface of the floorboard at intervals, and further ribs extending in the width direction of the floorboard that intersect with these ribs. . The protruding portions on both sides of the floorboard in the width direction receive the load of post-cast concrete during temporary construction by the ribs and reinforcing bars arranged within the protruding portions.

（考案が解決しようとする課題）しかしながら、従来のPC床板では、倉庫など
のスラブのように、後打ちスラブの厚さが厚くな
る場合には、仮設時の荷重を受けるために、はね
出し部内に多量の補強筋の配筋を必要とし、その
ために鉄筋量が増加し、それだけコスト高になる
と共に、配筋作業に手間どり、床板の重量が増す
不都合が生ずる。(Problem that the invention aims to solve) However, with conventional PC floorboards, when the thickness of the post-cast slab becomes thick, such as slabs in warehouses, it is difficult for the existing PC floorboards to bulge out in order to receive the load during temporary construction. It is necessary to arrange a large amount of reinforcing bars within the section, which increases the amount of reinforcing bars, which increases the cost accordingly, and also causes the disadvantage that the reinforcing bar arrangement work is time-consuming and the weight of the floorboard increases.

本考案の目的は、コスト高となることなく、配
筋が簡単で、床板の重量を増すことなくはね出し
部の補強を図ることにある。 The purpose of the present invention is to provide reinforcement for the protruding portion without increasing the cost, making the reinforcement easy to arrange, and without increasing the weight of the floorboard.

（課題を解決するための手段）本考案のPC床板において、短手方向の両側に
はね出し部１ｂを形成している床版１ｄから上記
はね出し部上面より高く立上り上記両はね出し部
の間に設けてある短手方向の複数のリブ１１，１
２，１３と、上記床版から立上り上記リブ相互を
接続している長手方向の複数のリブ１４，１５及
び上記はね出し部に上記床版上面より露出してい
る接合用組立て鉄筋３，３ａを配置し、上記短手
方向のリブの上記はね出し部側の端部相互を接続
し上記床版に一部を埋設してある吊り上げ筋２を
配しているものである。(Means for Solving the Problems) In the PC floorboard of the present invention, from the floor slab 1d forming the protruding portions 1b on both sides in the transverse direction, the protruding portions rise higher than the upper surface of the protruding portions. A plurality of ribs 11, 1 in the short direction provided between the parts
2, 13, a plurality of longitudinal ribs 14, 15 rising from the floor slab and connecting the ribs, and joining assembly reinforcing bars 3, 3a exposed from the upper surface of the floor slab at the protruding portions. A lifting bar 2 is provided which connects the ends of the ribs in the transverse direction on the protruding part side and is partially buried in the floor slab.

（作用）床版１ａのはね出し部１ｂには後打ちコンクリ
ートＣの荷重がかかつたとき、吊り上げ筋２はそ
の引張り力で荷重の一部を負担してリブに伝達
し、はね出し部の補強を図る。(Function) When the load of the post-cast concrete C is applied to the protrusion part 1b of the floor slab 1a, the lifting bars 2 bear part of the load with its tensile force and transmit it to the ribs, causing the protrusion. We will try to strengthen the parts.

（実施例）以下本案の一実施例を図面を参照して説明す
る。(Example) An example of the present invention will be described below with reference to the drawings.

PC床板１の本体を構成している床版１ａは、
平面長方形形状に形成されている。床版１ａの上
面からは３条のコンクリートリブ１１，１２，１
３がこの床版の長手方向と直交する方向にかつ、
短手方向の両側に床版のはね出し部１ｂ，１ｂを
形成して立上つている。これらのリブ１１〜１３
は床版１ａ上面に等間隔を置いて配置されてい
る。 The floor slab 1a that constitutes the main body of the PC floor board 1 is
It is formed into a rectangular planar shape. Three concrete ribs 11, 12, 1 are visible from the top of the floor slab 1a.
3 is in a direction perpendicular to the longitudinal direction of this floor slab, and
The floor slab stands up with protruding parts 1b, 1b formed on both sides in the transverse direction. These ribs 11-13
are arranged at equal intervals on the upper surface of the floor slab 1a.

床版１ａの上面には、リブ１１〜１３と相互に
接続する長手方向と平行のリブ１４，１５が立上
つている。 Ribs 14 and 15 that are parallel to the longitudinal direction and interconnect with the ribs 11 to 13 stand up on the upper surface of the floor slab 1a.

また床版１ａのはね出し部１ｂには、長手方向
に接合用組立て鉄筋３，３ａを配筋してある。こ
の接合用組立て鉄筋の内側にはメツシユ型枠４を
配設してある。 Further, on the protruding portion 1b of the floor slab 1a, assembly reinforcing bars 3, 3a for joining are arranged in the longitudinal direction. A mesh formwork 4 is arranged inside the assembly reinforcing bars for joining.

各リブ１１，１２，１３の端部間は吊り上げ筋
２で繋がれ、リブ間の吊り上げ筋はさらに床版１
ａと連設している。すなわち吊り上げ筋２は波形
に形成されており、山部は各リブ１１〜１３の端
部の上部に埋込まれており、谷部はリブ１１とリ
ブ１２、リブ１２とリブ１３の間の床版１ａ内に
埋設されている。吊り上げ筋２は、隣接するリブ
１１，１２間、リブ１２，１３間で床版１ａを斜
め方向に各リブに向けて吊り上げる構成としてい
る。 The ends of each rib 11, 12, 13 are connected by lifting bars 2, and the lifting bars between the ribs are further connected to the floor slab 1.
It is connected to a. That is, the lifting bars 2 are formed in a wave shape, and the peaks are embedded in the upper part of the ends of each rib 11 to 13, and the valleys are embedded in the floor between the ribs 11 and 12, and between the ribs 12 and 13. It is embedded within the plate 1a. The lifting bars 2 are configured to lift the floor slab 1a diagonally toward each rib between the adjacent ribs 11 and 12 and between the ribs 12 and 13.

第２図及び第３図に示すようにリブ１１〜１３
とリブ１４，１５と後打ちコンクリートＣとによ
つて床版１ａ上に中空部５が形成される。この中
空部が設備配管、配線およびダクトなどのスペー
スとなる。 As shown in FIGS. 2 and 3, ribs 11 to 13
A hollow portion 5 is formed on the floor slab 1a by the ribs 14, 15 and the post-cast concrete C. This hollow part becomes a space for equipment piping, wiring, ducts, etc.

PC床板の使用方法を説明する。 Explain how to use the PC floorboard.

まず、各PC床板１をリブ１１〜１３を上にし
て順次敷設し、接合用組立て鉄筋３，３ａを互い
に隣接させ、ついで各PC床板１における隣り合
うリブ間、リブと接合用組立て鉄筋との間に型枠
Ｋ（第２図）を水平にセツトし、その後型枠Ｋ上
にスラブ筋を配筋してから、型枠上に後打ちコン
クリートＣを打設する。コンクリートＣの一部は
隣接する接合用組立て鉄筋３，３ａ内に打設さ
れ、隣り合うPC床板１の接合部６を形成し、こ
の接合部がリブと同様の役割を果す。 First, each PC floorboard 1 is laid one after another with the ribs 11 to 13 on top, and the joining assembly reinforcing bars 3 and 3a are placed adjacent to each other, and then between the adjacent ribs of each PC floorboard 1, and between the rib and the joining assembly reinforcing bar. In the meantime, a formwork K (Fig. 2) is set horizontally, and after that, slab reinforcement is arranged on the formwork K, and post-cast concrete C is placed on the formwork. A part of the concrete C is placed inside the adjacent joint assembly reinforcing bars 3 and 3a to form a joint 6 between the adjacent PC floor plates 1, and this joint plays the same role as a rib.

この結果、第３図に示すように中空部５が形成
される。 As a result, a hollow portion 5 is formed as shown in FIG.

（考案の効果）本考案によれば、PC床板の本体である床版の
はね出し部にかかるコンクリートの荷重の一部を
吊り上げ筋で負担でき、簡単な配筋でかつPC床
板の重量を増すことなく低いコストではね出し部
を補強できる。接合用組立て鉄筋により、PC床
板の補強が図れると共に、隣接するPC床板との
接合が強化される。(Effects of the invention) According to the invention, part of the concrete load applied to the protruding part of the slab, which is the main body of the PC floorboard, can be borne by lifting reinforcements, and the weight of the PC floorboard can be reduced with simple reinforcement. The protruding portion can be reinforced at low cost without increasing the amount. The prefabricated reinforcing bars for joining will not only strengthen the PC floorboards, but also strengthen the connection with the adjacent PC floorboards.

[Brief explanation of drawings]

第１図は斜視図、第２図は使用状態を示す断面
図、第３図は第２図−線断面図である。１……PC床板、１ａ……床版、１ｂ……はね
出し部、１１，１２，１３……リブ、２……吊り
上げ筋、３，３ａ……接合用組立て鉄筋。 FIG. 1 is a perspective view, FIG. 2 is a cross-sectional view showing the state of use, and FIG. 3 is a cross-sectional view taken along the line shown in FIG. 2. 1...PC floor plate, 1a...floor slab, 1b...protrusion part, 11, 12, 13...rib, 2...lifting bar, 3, 3a...assembly reinforcing bar for joining.

Claims

[Scope of utility model registration request]

A plurality of ribs in the transverse direction rising higher than the upper surface of the protruding parts and provided between the two protruding parts from the floor slab forming protruding parts on both sides in the transverse direction; A plurality of ribs in the longitudinal direction rising from the slab and connecting the ribs to each other, and joining assembly reinforcing bars exposed from the upper surface of the floor slab are arranged in the protruding parts, and the ribs in the transverse direction are A PC characterized in that a lifting bar is provided that connects the ends of the protrusion side and is partially buried in the floor slab.
floorboards.