JP2636858B2 - Construction method of flat slab - Google Patents

Construction method of flat slab

Info

Publication number
JP2636858B2
JP2636858B2 JP62290597A JP29059787A JP2636858B2 JP 2636858 B2 JP2636858 B2 JP 2636858B2 JP 62290597 A JP62290597 A JP 62290597A JP 29059787 A JP29059787 A JP 29059787A JP 2636858 B2 JP2636858 B2 JP 2636858B2
Authority
JP
Japan
Prior art keywords
slab
support plate
substrate
flat
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.)
Expired - Lifetime
Application number
JP62290597A
Other languages
Japanese (ja)
Other versions
JPH01137047A (en
Inventor
治 石井
龍生 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Original Assignee
Taisei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taisei Corp filed Critical Taisei Corp
Priority to JP62290597A priority Critical patent/JP2636858B2/en
Publication of JPH01137047A publication Critical patent/JPH01137047A/en
Application granted granted Critical
Publication of JP2636858B2 publication Critical patent/JP2636858B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、RC構造、SRC構造、鉄骨構造の建物におけ
る、鉄筋コンクリート造のフラットスラブの施工法に関
するものである。
The present invention relates to a method of constructing a reinforced concrete flat slab in a building having an RC structure, an SRC structure, or a steel structure.

(従来の技術) 従来のフラットスラブの施工法は、第19図及び第20図
に示すように、柱(a)の柱頭部に施工されたキャピタ
ル(b),支板(ドロップパネル)(c)上に、スラブ
コンクリート(d)が一体に打設されて構築される。
(Prior Art) The conventional flat slab construction method is, as shown in FIGS. 19 and 20, capital (b) and support plate (drop panel) (c) constructed on the column cap of column (a). ), A slab concrete (d) is cast integrally and constructed.

(発明が解決しようとする問題点) 前記した従来のフラットスラブの施工法にあっては、
次のような問題点がある。
(Problems to be solved by the invention) In the above-mentioned conventional flat slab construction method,
There are the following problems.

(イ)支板やキャピタル部の型枠の製作、施工に多大の
労を要した。
(A) A great deal of labor was required for the production and construction of the supporting plate and the formwork of the capital part.

(ロ)キャピタルを簡略化したフラットなプレートを柱
頭部に設けて、その上部にスラブコンクリートを打設す
る工法では、柱周辺のスラブのパンチングによりスラブ
が厚くなり、柱スパンが大きくなるとスラブの自量が増
えて不経済である。
(B) In the construction method in which a flat plate with simplified capital is provided on the column head and slab concrete is poured on top of it, the slab becomes thicker due to punching of the slab around the column. The amount increases and it is uneconomical.

(ハ)フラットスラブの剪断破壊のメカニズムを第21図
に示す。
(C) The mechanism of shear failure of the flat slab is shown in FIG.

剪断破壊は、柱a近傍のスラブdが過大な床荷重wに
よって押し抜ける破壊、即ちパンチングによって生起す
るが、スラブの曲げ応力の引張側(通常はスラブ上側)
から入った亀裂eが圧縮側(通常はスラブ下側)のスラ
ブの柱の付け根に向かって貫通することによって終局に
達する。
The shear fracture is caused by a fracture in which the slab d near the column a is pushed through by an excessive floor load w, that is, punching, but the tensile side of the bending stress of the slab (usually the upper side of the slab).
Is reached by penetrating into the compression side (usually below the slab) towards the base of the slab column.

本発明は、上記したような従来の問題を解決するため
になされたもので、合理的かつ経済的なフラットスラブ
の施工法を提供することを目的とする。
The present invention has been made to solve the above-described conventional problems, and has as its object to provide a reasonable and economical method of constructing a flat slab.

(問題点を解決するための手段) 上記の目的を達成するために、本発明のフラットスラ
ブの施工法は、コンクリート製の基板に柱鉄筋が通る開
口部が設けられ、開口部に跨がって型鋼からなる剪断補
強材が配設され、剪断補強材の下半部は基板に埋設さ
れ、剪断補強材の上半部は基板の上面に突設されてな
る、半PCの支板を、基板に設けた開口の縁部が柱頭部に
載るように設置した後、支板の上部に、支板における基
板の厚さの一部がスラブに埋設されるように、スラブコ
ンクリートを後打ちし、支板とスラブコンクリートとを
補強材を介して一体化することを特徴としたものであ
る。
(Means for Solving the Problems) In order to achieve the above object, in the flat slab construction method of the present invention, an opening through which a column rebar passes is provided on a concrete substrate, and the flat slab is straddled over the opening. A shear reinforcing member made of a mold steel is disposed, a lower half of the shear reinforcing member is embedded in the substrate, and an upper half of the shear reinforcing member is protruded from the upper surface of the substrate. After installing so that the edge of the opening provided on the substrate rests on the capital, post-slab concrete on the support plate so that part of the thickness of the substrate in the support plate is embedded in the slab. In addition, the support plate and the slab concrete are integrated via a reinforcing material.

(作 用) 本発明によれば基板に補強材の下半部を埋設し、上半
部を突出させた半PCの支板の上部にスラブコンクリート
を後打をして、同スラブコンクリートと前記支板とを剪
断補強材を介して一体化したことにより、引張力が生じ
るスラブと圧縮力が生じる支板とが、同剪断補強材によ
って繋がれるため、柱近傍のフラットスラブのパンチン
グによる破壊が防止され、同スラブに粘りが付与され
る。
(Operation) According to the present invention, a lower half of a reinforcing material is buried in a substrate, and a slab concrete is post-punched on an upper portion of a half-PC support plate having an upper half protruding. Since the support plate and the support plate are integrated via the shear reinforcing material, the slab generating the tensile force and the support plate generating the compressive force are connected by the shear reinforcing material, so that the flat slab near the column is broken by punching. Is prevented and the slab is given stickiness.

また剪断補強材の交差部が、支板における柱部位に相
当する基板の開口部内に位置するので、補強材は柱に対
してキャンティレバーとして機能し、フラットスラブの
耐力が増進される。
In addition, since the intersection of the shear reinforcing members is located in the opening of the substrate corresponding to the column portion of the support plate, the reinforcing member functions as a cantilever with respect to the column, and the strength of the flat slab is increased.

更に剪断補強材が支板とスラブコンクリートの打継部
を貫通することによって、同剪断補強材は打継面に生じ
るずれ剪断に抵抗してだぼ効果が発揮される。
Further, since the shear reinforcing material penetrates the joint between the support plate and the slab concrete, the shear reinforcing material exerts a dowel effect against the shearing shear generated on the joint surface.

(実施例) 以下図面を参照しながら本発明のフラットスラブの施
工法の実施例について説明する。
(Example) Hereinafter, an example of a method of constructing a flat slab of the present invention will be described with reference to the drawings.

(イ)前提条件。(B) Prerequisites.

本発明は、フラットスラブ構造の支板(キャピタル)
Aと後打ちコンクリートスラブCとの間に型鋼からなる
剪断補強材2を介在させ、フラットスラブの、荷重に対
する剪断抵抗を増大させて、建物の用途・機能に対応し
て合理的かつ経済的に、階の天井高さが高くでき、或い
は階高を低くすることを可能にする工法の要求に応える
ものである。
The present invention relates to a support plate (capital) having a flat slab structure.
A and a post-cast concrete slab C are interposed with a shear reinforcing material 2 made of a shape steel to increase the shear resistance of the flat slab against a load, and to rationalize and economically respond to the use and function of the building. The present invention meets the demand for a construction method that allows a ceiling height of a floor to be increased or a floor height to be lowered.

(ロ)基板1。(第3図、第4図) 基板1は所要厚さの偏平なコンクリート製の版で、支
板Aにおける底部として、支板上にコンクリートを打設
する際の型枠を兼ねている。
(B) Substrate 1. (FIGS. 3 and 4) The substrate 1 is a flat concrete plate having a required thickness, and also serves as a bottom of the support plate A and serves as a formwork for casting concrete on the support plate.

基板1には、図示のように、柱頭部に設置する際にRC
柱Bの鉄筋(図示省略)が挿通する開口部が設けられて
いる。
As shown in the figure, the board 1 has an RC
An opening through which a reinforcing bar (not shown) of the column B is inserted is provided.

基板1に設けた開口部のサイズは、柱Bの平断面のそ
れよりやや小さく、基板1を柱Bに設置したとき、開口
縁部が柱に載る程度の大きさである。
The size of the opening provided in the substrate 1 is slightly smaller than that of the plane cross section of the column B, and is such that when the substrate 1 is installed on the column B, the opening edge is placed on the column.

(ハ)剪断補強材2。(C) Shear reinforcing material 2.

剪断補強材2としては、H型鋼または溶接H型鋼(第
3図、第4図)、溝型鋼(第7図)、山型鋼、T型鋼ま
たは平鋼を斜材を用いて組み立てたトラス材(第8
図)、上下の鉄筋をスターラップで連結したラチス状の
鉄筋組立材(第9図)、上下の鉄筋を斜材で連結したト
ラス状の鉄筋組立材(第10図)が使用される。
As the shear reinforcing material 2, a truss material (H-shaped steel or welded H-shaped steel (FIGS. 3 and 4), a grooved steel (FIG. 7), an angle steel, a T-shaped steel or a flat steel assembled by using a diagonal material) 8th
FIG. 9), a lattice-shaped rebar assembly in which upper and lower rebars are connected by a stirrup (FIG. 9), and a truss-shaped rebar assembly in which upper and lower rebars are connected by diagonal members (FIG. 10).

剪断補強材2は、型鋼同志を同一面に設定し、その型
鋼の交差部(接合部)を、基板1の開口部内に位置さ
せ、公知の接合手段(溶接又はボルト)により組み立
て、製作される。
The shear reinforcing material 2 is manufactured by setting the cross sections of the steel molds on the same plane, locating the intersection (joining part) of the steel molds in the opening of the substrate 1, and assembling them by known joining means (welding or bolt). .

第3図に示す補強材2は、縦横各2本のH型鋼を井桁
状に接合し、その交差部を開口部内に位置させて基板1
に配設した平面図である。
The reinforcing member 2 shown in FIG. 3 is composed of two horizontal and vertical H-shaped steels joined in a girder shape,
FIG.

(ニ)支板A。(第3図乃至第5図) 図示の支板Aは、前記の基板1とH型鋼の剪断補強材
2からなり、その製作及び構造を以下に示す。
(D) Support plate A. (FIGS. 3 to 5) The illustrated support plate A is composed of the substrate 1 and the H-shaped steel shear reinforcing material 2, and its manufacture and structure will be described below.

工場又は現場のヤードにおいて、基板1を成型するた
めの型枠内に井桁状の補強材2を配置する。その際、補
強材2の下面を底型枠より所定の被り代を見込んで配置
する。その際、本発明の支板Aは特に、補強材2の交差
部を、型枠に設けた開口部内に位置させて配置する。
In a factory or on-site yard, a girder-shaped reinforcing material 2 is arranged in a mold for molding a substrate 1. At that time, the lower surface of the reinforcing member 2 is arranged in consideration of a predetermined margin from the bottom mold. At this time, the support plate A of the present invention is particularly arranged such that the intersection of the reinforcing members 2 is located in the opening provided in the formwork.

上記の配置は、支板A上にスラブコンクリートCが打
設され、スラブCに荷重wが作用したとき(第5図、第
21図参照)、補強材2の交差部が平面で見て柱部位に位
置することにより、補強材2は柱Bに対してキャンティ
レバーとして機能するのでフラットスラブの耐力増強が
図れる。
The above arrangement is performed when slab concrete C is cast on support plate A and load w acts on slab C (FIG. 5, FIG.
21), the crossing portion of the reinforcing member 2 is located at the pillar portion when viewed in a plane, so that the reinforcing member 2 functions as a cantilever with respect to the column B, thereby increasing the strength of the flat slab.

次いで、基板1の型枠内に、補強材2の上半部が前記
基板1の上面から突設するレベルにコンクリートを打設
する。
Next, concrete is poured into the mold of the substrate 1 at a level where the upper half of the reinforcing material 2 projects from the upper surface of the substrate 1.

コンクリートが硬化後脱型することにより、補強材2
の下半部は基板1に埋設され、上半部は基板1の上面に
突設された半PCの支板が形成される。
When the concrete is released after hardening, the reinforcing material 2
The lower half is embedded in the substrate 1, and the upper half is formed with a support plate of a half PC projecting from the upper surface of the substrate 1.

(ホ)半PCの支板を用いたフラットスラブの施工。(第
1図乃至第4図) 所要数製作した支板Aを、先行して構築された複数の
RC柱Bの頭部に設置する。
(E) Construction of flat slabs using half-PC support plates. (Fig. 1 to Fig. 4) The required number of supporting plates A were
Installed on the head of RC column B.

次いで、支板Aにおける基板1の設けられた開口の縁
部が、柱頭部に載るように支板を設置する。そのとき、
基板1の開口部は柱部位に対応し、スラブと同時に開口
部もコンクリートが打設される。(第4図) 支板の張り出し部に支保工を行い(図示省略)、次い
で、各柱頭部に設置した各支板(A,A)間にスラブ用型
枠を設置すると共に支保工を行う(図示省略)。
Next, the support plate is installed such that the edge of the opening provided with the substrate 1 in the support plate A is placed on the column capital. then,
The opening of the substrate 1 corresponds to the pillar portion, and concrete is cast in the opening at the same time as the slab. (Fig. 4) Shoring is performed on the overhang of the support plate (not shown), and then the slab formwork is installed between the support plates (A, A) installed on the respective column caps and the support is performed. (Not shown).

そのとき、第4図に示すように、スラブ型枠と支板A
における基板1との接面に段差を付ける。即ち、支板A
及び型枠上にスラブコンクリートCを打設した際、基板
1の厚さの一部がスラブBに埋設されるように、基板1
の天端よりも低いレベルにスラブ型枠の天端を設定す
る。
At that time, as shown in FIG.
A step is formed on the contact surface with the substrate 1 at the step. That is, support plate A
And when the slab concrete C is cast on the formwork, the substrate 1 is buried in the slab B so that a part of the thickness of the substrate 1 is embedded in the slab B.
Set the top of the slab formwork to a level lower than the top of.

次いで、スラブ配筋(図示省略)を行い、支板A及び
スラブ型枠上にスラブコンクリートCを後打ちすること
により、支板とスラブとは、支板に設けた補強材を介し
て剛強に接合される。勿論、スラブコンクリートCは、
支板Aの補強材2の上半部がスラブ内に埋設される所要
のレベルに打設される。
Next, slab reinforcement (not shown) is performed, and the slab concrete C is post-punched on the support plate A and the slab formwork, so that the support plate and the slab become rigid through the reinforcing material provided on the support plate. Joined. Of course, slab concrete C is
The upper half of the reinforcing material 2 of the support plate A is cast at a required level to be embedded in the slab.

尚、本実施例のRC柱Bに替えて柱型枠上に支板Aを設
置し、柱コンクリート、スラブコンクリートCを順次打
設してもよい。
Note that, instead of the RC columns B of the present embodiment, a support plate A may be installed on a column formwork, and column concrete and slab concrete C may be cast sequentially.

(ヘ)フラットスラブの耐パンチング効果の説明。(F) Explanation of punching resistance effect of flat slab.

第5図に示すように、剪断補強材2の下端フラット部
2aが支板Aのコンクリート基板1に定着され、上端フラ
ット部2bが後打ちスラブコンクリートCに定着されるこ
とによって、フラットスラブの引張側(後打ちスラブ
C)と圧縮側(支板Aの基板1)とが補強材2で緊結さ
れて、第21図に示すようなパンチングによるフラットス
ラブの破壊が防止され、フラットスラブに粘りが付与さ
れる。
As shown in FIG. 5, the lower end flat portion of the shear reinforcement 2
2a is fixed to the concrete substrate 1 of the support plate A, and the upper flat portion 2b is fixed to the post-slab concrete C, so that the flat side of the flat slab has a tension side (post-slab C) and a compression side (substrate of the support plate A). 1) are tied together by the reinforcing material 2 to prevent the flat slab from being broken by punching as shown in FIG. 21 and to give the flat slab stickiness.

(ト)フラットスラブのだぼ効果の説明。(G) Explanation of the dowel effect of the flat slab.

第6図に示すように、剪断補強材2のウエブ部2cがス
ラブコンクリートCと支板Aとの打継部を貫通するた
め、だぼ効果によってフラットスラブの打継面に生じる
ずれ剪断τに抵抗し、両者C,Aの一体化が図られる。
As shown in FIG. 6, since the web portion 2c of the shear reinforcement 2 penetrates the joint between the slab concrete C and the support plate A, the shear shear τ generated on the joint surface of the flat slab by the dowel effect is reduced. Resistance and the integration of both C and A are achieved.

(チ)剪断補強材の各種配列。(H) Various arrangements of shear reinforcement.

本発明の施工法によって構築されるフラットスラブの
柱頭部における、剪断補強材の他の配列の実施例を、第
11図乃至第18図に示す。
Example of another arrangement of shear reinforcement in the capital of a flat slab constructed by the construction method of the present invention,
This is shown in FIGS. 11 to 18.

第11図には剪断補強材2が縦横に各1本宛十文字に配
設されている。
In FIG. 11, shear reinforcing members 2 are vertically and horizontally arranged one by one in a cross shape.

第12図には剪断補強材2が斜方向に各1本宛配設され
ている。
In FIG. 12, shear reinforcing members 2 are disposed one by one in a diagonal direction.

第13図及び第14図には、夫々第11図及び第12図に示す
剪断補強材2が複数本宛配設されている。
13 and 14, a plurality of shear reinforcing members 2 shown in FIGS. 11 and 12, respectively, are provided.

第15図には剪断補強材2が縦横斜方向に各1本宛配設
されている。
In FIG. 15, one shear reinforcing material 2 is disposed in each of the longitudinal and horizontal oblique directions.

第16図には剪断補強材2が縦横斜方向に夫々複数本宛
配設されている。
In FIG. 16, a plurality of shear reinforcing members 2 are provided in each of the vertical and horizontal oblique directions.

第17図及び第18図には、横方向の一本または複数本の
剪断補強材2と交差して、縦方向の剪断補強材2′を所
定間隔をおいて複数本は配設している。
In FIGS. 17 and 18, a plurality of longitudinal shear reinforcing members 2 'are disposed at predetermined intervals so as to intersect with one or more horizontal shear reinforcing members 2. .

(発明の効果) 本発明のフラットスラブの施工法は、以上説明したよ
うになるから次のような効果を得ることができる。
(Effects of the Invention) Since the flat slab construction method of the present invention is as described above, the following effects can be obtained.

(イ)従来のキャピタル部は形状が複雑なため、施工手
間を要しコスト高になるのに対し、本発明は基板の形状
を偏平にしたので、施工が容易となりコストを低減でき
る。
(A) The conventional capital part has a complicated shape and requires a lot of labor and costs for the construction. On the other hand, according to the present invention, since the shape of the substrate is flat, the construction is easy and the cost can be reduced.

(ロ)支板を工場製作する際に、予め剪断補強材は支板
に組み込まれるため品質精度がよく、また単独の補強材
を現場にて取り付ける必要がないので施工の省略化が図
れる。
(B) When the support plate is manufactured at the factory, the shear reinforcing material is incorporated in the support plate in advance, so that the quality accuracy is good, and since there is no need to attach a single reinforcing material on site, the construction can be omitted.

(ハ)基板に補強材の下半部を埋設し上半部を突設させ
た、半PCの支板の上部にスラブコンクリートを後打ち
し、支板とスラブコンクリートとを補強材を介して一体
化したので、引張力が生じるスラブと圧縮力が生じる支
板とが剪断補強材により繋がれるため、柱近傍のフラッ
トスラブがパンチングによって破壊されるのが防止さ
れ、同スラブに粘りが付与される。
(C) The lower half of the reinforcing material is buried in the substrate and the upper half is projected. The slab concrete is post-punched on the upper part of the half PC supporting plate, and the supporting plate and the slab concrete are interposed through the reinforcing material. Since they are integrated, the slab generating the tensile force and the supporting plate generating the compressive force are connected by the shear reinforcement, so that the flat slab near the column is prevented from being broken by punching, and the slab is given stickiness. You.

(ニ)剪断補強材の交差部が、支板における基板の開口
部内(柱部位)に位置することにより、補強材は柱に対
してキャンティレバーとして機能するので、フラットス
ラブの耐力増強が図れる。
(D) Since the intersection of the shear reinforcing members is located in the opening of the substrate in the support plate (column portion), the reinforcing member functions as a cantilever with respect to the column, so that the strength of the flat slab can be increased.

(ホ)剪断補強材の支板とスラブコンクリートとの打継
部を貫通することにより、打継面に生じるずれ剪断に補
強材が抵抗してだぼ効果が発揮され、支板とスラブとの
十分な合成効果が得られる。その結果、柱近傍のフラッ
トスラブの厚さを従来よりも低減できるので、建物全体
としての重量は軽減される。従来は柱近傍のフラットス
ラブの厚さは著しく厚くなるため自重が増大し、低層建
物や短スパン建物にしか利用できなかったが、本発明の
施工法によれば高層建物や大スパン建物にも適用でき
る。
(E) By penetrating the joint between the support plate of the shear reinforcement and the slab concrete, the reinforcement material resists shearing occurring at the joint surface, and the dowel effect is exhibited, and the connection between the support plate and the slab is achieved. A sufficient synthesis effect can be obtained. As a result, the thickness of the flat slab in the vicinity of the pillar can be reduced more than before, and the weight of the entire building is reduced. In the past, the flat slab near the pillars became extremely thick, increasing its own weight, and could only be used for low-rise buildings and short-span buildings.However, according to the construction method of the present invention, high-rise buildings and large-span buildings were also used. Applicable.

(ヘ)半PCの支板を柱頭部に設置し、支板の上部に、支
板における基板の厚さの一部がスラブに埋設されるよう
にして、スラブコンクリートを後打ちすることにより、
更に剪断抵抗が増し上記の効果は著しい。
(F) The half-PC support plate is installed on the capital, and a part of the thickness of the substrate in the support plate is buried in the slab at the top of the support plate, and the slab concrete is post-cast.
Further, the shear resistance increases, and the above effect is remarkable.

(ト)また更に、柱近傍のフラットスラブの厚さが低減
されることにより、用途や機能に対応して、建物の階高
を低くでき、或いは室内にキャピタル部を露出すること
なく天井高を高くすることができるので合理的かつ経済
的である。
(G) Furthermore, by reducing the thickness of the flat slab near the pillars, the floor height of the building can be reduced according to the application and function, or the ceiling height can be increased without exposing the capital part to the room. It is reasonable and economical because it can be expensive.

【図面の簡単な説明】 第1図は本発明のフラットスラブの施工法の一実施例の
全体説明図(平面図) 第2図は第1図のII−II視側面図 第3図は第1図の部分拡大平面図 第4図は第3図の縦断面図 第5図は剪断補強材の耐パンチング効果を示す説明図 第6図は剪断補強材のだぼ効果を示す説明図 第7図乃至第10図は、夫々本発明の施工法によって構築
されたフラットスラブの他の各実施例を示す縦断面図 第11図乃至第18図は、夫々本発明の施工法によって構築
されたフラットスラブの他の各実施例を示す柱頭部の平
面図 第19図は従来のフラットスラブの平面図 第20図は第19図のX−X視側面図 第21図はフラットスラブのパンチング破壊を示す説明図 である。 A……支板、B……柱、C……後打ちコンクリートスラ
ブ、1……コンクリート基板、2……剪断補強材。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall explanatory view (plan view) of an embodiment of a flat slab construction method of the present invention. FIG. 2 is a side view taken along line II-II of FIG. 1 is a partially enlarged plan view of FIG. 1 FIG. 4 is a longitudinal sectional view of FIG. 3 FIG. 5 is an explanatory view showing an anti-punching effect of a shear reinforcing material FIG. 6 is an explanatory view showing a dowel effect of a shear reinforcing material Figures 10 to 10 are longitudinal sectional views showing other embodiments of the flat slab constructed by the construction method of the present invention, respectively. Figs. 11 to 18 are flat cross sections constructed by the construction method of the present invention, respectively. FIG. 19 is a plan view of a conventional flat slab. FIG. 20 is a side view taken along line XX of FIG. 19. FIG. 21 is a punching fracture of the flat slab. FIG. A: Support plate, B: Column, C: Post-cast concrete slab, 1: Concrete substrate, 2: Shear reinforcing material.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】コンクリート製の偏平な基板に、柱鉄筋が
通る開口部が設けられ、 上記開口部に跨がって、型鋼からなる剪断補強材が配設
され、 上記補強材の下半部は前記基板に埋設され、 上記補強材の上半部は前記基板の上面に突設されてな
る、 半PCの支板を、 前記基板に設けられた開口の縁部が、柱頭部に載るよう
に設置した後、 前記支板の上部に、支板における基板の厚さの一部がス
ラブに埋設されるように、スラブコンクリートを後打ち
し、 支板とスラブコンクリートとを補強材を介して一体化す
る ことを特徴とするフラットスラブの施工法。
1. A flat board made of concrete is provided with an opening through which a column rebar passes, and a shear reinforcing member made of a mold steel is provided across the opening, and a lower half of the reinforcing member is provided. Is embedded in the substrate, the upper half of the reinforcing material is projected from the upper surface of the substrate, and the support plate of the half PC is placed so that the edge of the opening provided in the substrate rests on the capital. After being installed in the upper part of the support plate, the slab concrete is post-punched so that a part of the thickness of the substrate in the support plate is embedded in the slab, and the support plate and the slab concrete are interposed through the reinforcing material. A flat slab construction method characterized by being integrated.
JP62290597A 1987-11-19 1987-11-19 Construction method of flat slab Expired - Lifetime JP2636858B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62290597A JP2636858B2 (en) 1987-11-19 1987-11-19 Construction method of flat slab

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62290597A JP2636858B2 (en) 1987-11-19 1987-11-19 Construction method of flat slab

Publications (2)

Publication Number Publication Date
JPH01137047A JPH01137047A (en) 1989-05-30
JP2636858B2 true JP2636858B2 (en) 1997-07-30

Family

ID=17758067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62290597A Expired - Lifetime JP2636858B2 (en) 1987-11-19 1987-11-19 Construction method of flat slab

Country Status (1)

Country Link
JP (1) JP2636858B2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH026901B2 (en) * 1982-12-29 1990-02-14 Mitsui Constr

Also Published As

Publication number Publication date
JPH01137047A (en) 1989-05-30

Similar Documents

Publication Publication Date Title
KR100343960B1 (en) Steel concrete structure
JP2636858B2 (en) Construction method of flat slab
JP2004197388A (en) Flat slab structure
JPH07229202A (en) Joint construction between reinforced concrete column and steel frame beam
JP2843204B2 (en) Earthquake-resistant wall
JPH0634994Y2 (en) Pre-stress introduction Pre-cast steel reinforced concrete girder
JP2754377B2 (en) Building structure
JP3004242B2 (en) Building material for vibration control, vibration control structure and construction method
KR20070053836A (en) Apparatus for enhancing shear strength of colum slab connecton part and its menufacturing method
JPH11166294A (en) Steel frame-contained concrete beam and floor construction method using the concrete beam
JP2758208B2 (en) Joint method between column and steel reinforced concrete beam
KR200166886Y1 (en) Steel concrete structure
JP2620118B2 (en) Net formwork method for walls and floors
JPH067125Y2 (en) Structure of the stigma of the flat slab
JPH05287801A (en) Bar arrangement structure of beam in rigid-frame structure made of precast iron reinforcing concrete
JPH0742721B2 (en) Reinforced concrete column / beam construction method using precast beam members
JP3271810B2 (en) A method for manufacturing a heat-insulated half-PC plate.
JP2000045387A (en) Connecting structure of concrete filling type steel-pipe column and flat slab and concrete filling type steel-pipe column
JP2651506B2 (en) How to apply underground beams
JPH08253909A (en) Ferroconcrete floor slab for bridge and form therefor
JP2811211B2 (en) Flat slab construction method
KR910006123Y1 (en) Form units for the floor
JPH07139054A (en) Joining method for precast concrete wall plate
JPH07207754A (en) Connection structure of steel reinforced concrete column and steel structure beam
JPH05230935A (en) Precase concrete made beam frame member