JP2011220036A - Hollow embedded body unit - Google Patents

Hollow embedded body unit Download PDF

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JP2011220036A
JP2011220036A JP2010092381A JP2010092381A JP2011220036A JP 2011220036 A JP2011220036 A JP 2011220036A JP 2010092381 A JP2010092381 A JP 2010092381A JP 2010092381 A JP2010092381 A JP 2010092381A JP 2011220036 A JP2011220036 A JP 2011220036A
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hollow
support
outer shell
support muscle
main body
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JP5124613B2 (en
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Tsutomu Iwanaga
務 岩永
Kenjiro Yoshida
賢二郎 吉田
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Fukuvi Chemical Industry Co Ltd
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    • 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
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • E04B5/328—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements the filling elements being spherical

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Abstract

PROBLEM TO BE SOLVED: To provide a hollow embedded body unit allowing positioning of a plurality of hollow embedded bodies at a predetermined pitch and fixing of the hollow embedded bodies to a support reinforcement to be achieved at the same time when the hollow embedded bodies are connected with the support reinforcement in a line.SOLUTION: A hollow embedded body unit 1 has a plurality of hollow embedded bodies 20 and a support reinforcement 10 which connects the hollow embedded bodies at a predetermined pitch in a line. The support reinforcement 10 has a plurality of locking flange parts 14, and each of the hollow embedded bodies 20 has a support reinforcement locking part 40 for locking the support reinforcement 10. The support reinforcement locking part 40 has a guide groove 42 for making the support reinforcement 10 slide while the locking flange part 14 engages with the support reinforcement 10, a hook part 44 having a recess into which the support reinforcement 10 sliding on the guide groove 42 is inserted, and a regulation part 46 which comes in contact with the support reinforcement 10 inserted into the recess of the hook part 44 to regulate the sliding of the support reinforcement 10 toward the opening side of the recess of the hook part 44.

Description

本発明は、コンクリートスラブ内に複数の中空埋込体を埋設して中空コンクリートスラブを形成する中空スラブ工法に用いられる中空埋込体ユニットに関する。   The present invention relates to a hollow embedded unit used in a hollow slab method for forming a hollow concrete slab by embedding a plurality of hollow embedded bodies in a concrete slab.

コンクリートスラブ内に複数の中空埋込体を埋設して、中空部を有する中空コンクリートスラブを形成する、いわゆる中空スラブ工法（ボイドスラブ工法とも呼ばれる。）が知られている。中空スラブ工法によって中空コンクリートスラブを形成することによって、下記の利点が生じる。
・コンクリートスラブの軽量化および強度向上が図れ、その結果、梁を極力なくすことができ、広い室内空間を確保できる。
・コンクリートスラブの遮音性が向上する。 A so-called hollow slab method (also called a void slab method) is known in which a plurality of hollow embedded bodies are embedded in a concrete slab to form a hollow concrete slab having a hollow portion. By forming the hollow concrete slab by the hollow slab method, the following advantages are obtained.
・ Concrete slabs can be reduced in weight and strength. As a result, beams can be eliminated as much as possible, and a large indoor space can be secured.
・ Improves sound insulation of concrete slabs.

中空スラブ工法による中空コンクリートスラブの施工方法としては、型枠パネルの上に下端筋および上端筋をそれぞれ格子状に配筋し；下端筋の格子の１つの升目とこれに対応する上端筋の格子の１つの升目とそれぞれの升目の角同士を結ぶ仮想線とで形成される略立方体の配置用空間のそれぞれに上端筋の上方から中空埋込体を１つ１つ挿入して配置し；下端筋、中空埋込体および上端筋が完全に埋まるように型枠パネルの上にコンクリートを打設し；コンクリートが硬化した後、型枠パネルを脱型する方法が挙げられる。   The hollow concrete slab is constructed by placing the bottom and top bars in a grid pattern on the formwork panel; one grid for the bottom grid and the corresponding grid for the top bars A hollow implant is inserted into each of the substantially cubic placement spaces formed by one of the squares and an imaginary line connecting the corners of the squares, one by one from above the top muscle; There is a method in which concrete is placed on the formwork panel so that the streaks, hollow implants and upper end bars are completely buried; after the concrete has hardened, the formwork panel is demolded.

中空スラブ工法に用いられる中空埋込体としては、複数の中空埋込体を複数の配置用空間に同時に配置でき、また、コンクリート打設の際の中空埋込体の浮き上がりを抑制できることから、複数の中空埋込体を支持筋で一列に連設してユニット化した中空埋込体ユニットが提案されている（特許文献１）。   As the hollow implant used in the hollow slab method, a plurality of hollow implants can be simultaneously arranged in a plurality of arrangement spaces, and the lifting of the hollow implant during concrete placement can be suppressed. There has been proposed a hollow implant unit in which the hollow implants are unitized by connecting them in a row with support bars (Patent Document 1).

しかし、この中空埋込体ユニットにおいては、中空埋込体の表面から突設された支持筋取付片の支持筋挿通孔に支持筋を挿通しているだけであるため、中空埋込体は支持筋の長手方向に移動自在とされている。そのため、下記の問題が生じる。
・配置用空間のピッチに合わせて中空埋込体をあらかじめ位置決めする場合、施工の現場においてメジャー等で中空埋込体のピッチを１つ１つ計測しながら位置決めする必要があり、煩雑である。
・中空埋込体が支持筋の長手方向に移動しやすいため、せっかく中空埋込体を所定ピッチで位置決めしても、中空埋込体ユニットの各中空埋込体をそれぞれ配置用空間に配置する際、各中空埋込体の位置がずれやすく、すべての中空埋込体を同時に配置用空間に挿入することが困難である。 However, in this hollow implant unit, the hollow implant is supported only by inserting the support bar into the support bar insertion hole of the support bar mounting piece protruding from the surface of the hollow implant unit. It is movable in the longitudinal direction of the muscle. Therefore, the following problem arises.
-When positioning a hollow implant beforehand according to the pitch of the space for arrangement | positioning, it is necessary to position while measuring the pitch of a hollow implant one by one with a measure etc. in the construction site, and is complicated.
-Since the hollow implants easily move in the longitudinal direction of the support bars, each hollow implant of the hollow implant unit is arranged in the arrangement space even if the hollow implants are positioned at a predetermined pitch. At this time, the position of each hollow implant is easily shifted, and it is difficult to insert all the hollow implants simultaneously into the placement space.

特許第３９９０３８０号公報Japanese Patent No. 3990380

本発明は、複数の中空埋込体を支持筋で一列に連設した際に、中空埋込体の所定ピッチでの位置決めと、中空埋込体の支持筋への固定とを同時に行うことができる中空埋込体ユニットを提供する。   In the present invention, when a plurality of hollow implants are connected in a row with support bars, positioning of the hollow implants at a predetermined pitch and fixing of the hollow implants to the support bars can be simultaneously performed. A hollow implantable unit is provided.

本発明の中空埋込体ユニットは、複数の中空埋込体と、前記中空埋込体を所定ピッチで一列に連設する支持筋とを有する中空埋込体ユニットであって、
前記支持筋が、棒状の支持筋本体と、前記支持筋本体に所定ピッチで形成され、前記支持筋本体の長手方向に直交する方向に突出した複数のフランジ部とを有し、
前記中空埋込体が、内部に中空部を有する外殻と、前記外殻の表面に設けられた、前記支持筋を係止する支持筋係止部とを有し、
前記支持筋係止部が、前記外殻の表面に形成され、前記支持筋のフランジ部が係合した状態で前記支持筋をその長手方向に直交する方向にスライドさせるガイド溝と、前記外殻の表面から突設され、前記ガイド溝の長手方向にスライドする前記支持筋の支持筋本体が挿入される凹部を有するフック部と、前記外殻の表面に設けられ、前記フック部の凹部に挿入された前記支持筋本体に当接して前記フック部の凹部の開口部側への前記支持筋のスライドを規制する規制部とを有することを特徴とする。 The hollow implant unit of the present invention is a hollow implant unit having a plurality of hollow implants and a support bar connecting the hollow implants in a row at a predetermined pitch,
The support muscle has a rod-like support muscle main body, and a plurality of flange portions formed at a predetermined pitch on the support muscle main body and projecting in a direction perpendicular to the longitudinal direction of the support muscle main body,
The hollow implant has an outer shell having a hollow portion therein, and a support muscle locking portion provided on the surface of the outer shell for locking the support muscle,
A guide groove that is formed on the surface of the outer shell, and that slides the support bar in a direction perpendicular to the longitudinal direction in a state where the flange portion of the support bar is engaged; and the outer shell A hook portion that protrudes from the surface of the guide rod and has a recess into which the support muscle main body of the support muscle that slides in the longitudinal direction of the guide groove is inserted, and is provided on the surface of the outer shell and is inserted into the recess of the hook portion. And a regulating portion that abuts against the supporting muscle main body and regulates the sliding of the supporting muscle to the opening side of the concave portion of the hook portion.

前記支持筋のフランジ部は、前記中空埋込体の数よりも２つ多くに形成され、それらのうち両側に位置するフランジ部は、前記支持筋本体の端部近傍に形成され、かつ該フランジ部とこれに最も近い内側のフランジ部との間隔が、前記所定ピッチの半分であることが好ましい。
前記規制部は、前記フック部の凹部に前記支持筋本体を挿入する際には、前記支持筋本体に押圧されて弾性変形するものであり、かつ前記フック部の凹部に前記支持筋本体が挿入された後には、前記支持筋本体に先端部が当接して前記支持筋のスライドを規制するものであることが好ましい。 The flange portion of the support bar is formed two more than the number of the hollow implants, and the flange portions located on both sides thereof are formed in the vicinity of the end portion of the support bar body, and the flange It is preferable that the interval between the portion and the inner flange portion closest to the portion is half of the predetermined pitch.
The restricting portion is elastically deformed by being pressed by the support muscle main body when the support muscle main body is inserted into the recess of the hook portion, and the support muscle main body is inserted into the recess of the hook portion. After being done, it is preferable that a tip part contacts the support muscle main body to regulate the slide of the support muscle.

前記支持筋が２本であり、前記中空埋込体が、それぞれの支持筋に対応した前記支持筋係止部を有することが好ましい。
前記中空埋込体は、二分割可能な外殻と、二分割された外殻同士をその開口周縁部にて連結するヒンジ部と、前記外殻の中心を挟んで前記ヒンジ部とは反対側の開口周縁部の近傍に設けられた前記支持筋係止部とを有することが好ましい。 It is preferable that there are two support muscles, and the hollow implant has the support muscle locking portions corresponding to the respective support muscles.
The hollow implant includes an outer shell that can be divided into two parts, a hinge part that connects the two divided outer shells at the peripheral edge of the opening, and the opposite side of the hinge part across the center of the outer shell. It is preferable to have the said supporting-bar latching | locking part provided in the vicinity of the opening peripheral part.

本発明の中空埋込体ユニットによれば、複数の中空埋込体を支持筋で一列に連設した際に、中空埋込体の所定ピッチでの位置決めと、中空埋込体の支持筋への固定とを同時に行うことができる。   According to the hollow implant unit of the present invention, when a plurality of hollow implants are arranged in a row with support bars, positioning of the hollow implants at a predetermined pitch and the support bars of the hollow implants are performed. Can be performed simultaneously.

本発明の中空埋込体ユニットの一例を示す斜視図である。It is a perspective view which shows an example of the hollow implantable body unit of this invention. 支持筋の一例を示す側面図である。It is a side view which shows an example of a supporting muscle. 外殻が閉じた状態の中空埋込体の一例を示す上面図である。It is a top view which shows an example of the hollow implant body of the state where the outer shell closed. 外殻が閉じた状態の中空埋込体の一例を示す側面図である。It is a side view which shows an example of the hollow implant body of the state which the outer shell closed. 外殻が開いた状態の中空埋込体の一例を示す上面図である。It is a top view which shows an example of the hollow implant body of the state where the outer shell opened. 外殻が開いた状態の中空埋込体の一例を示す側面図である。It is a side view which shows an example of the hollow implant body of the state where the outer shell opened. 外殻が開いた状態にて中空埋込体ユニットを積み重ねた様子を示す斜視図である。It is a perspective view which shows a mode that the hollow implant body unit was piled up in the state which the outer shell opened. 中空埋込体の支持筋係止部に支持筋を係止した状態を示す斜視図である。It is a perspective view which shows the state which latched the support muscle to the support muscle latching | locking part of a hollow implant. ２つの支持筋１０を連結した際の支持筋１０の端部付近を示す側面図である。It is a side view which shows the edge part vicinity of the support muscle 10 at the time of connecting the two support muscles 10. FIG. 外殻が開いた状態の中空埋込体の他の例を示す斜視図である。It is a perspective view which shows the other example of the hollow implant body of the state which the outer shell opened. 本発明の中空埋込体ユニットを用いた中空スラブ工法による中空コンクリートスラブの施工方法の一工程を示す斜視図である。It is a perspective view which shows one process of the construction method of the hollow concrete slab by the hollow slab construction method using the hollow implant body unit of this invention. 本発明の中空埋込体ユニットを用いた中空スラブ工法による中空コンクリートスラブの施工方法の一工程を示す斜視図である。It is a perspective view which shows one process of the construction method of the hollow concrete slab by the hollow slab construction method using the hollow implant body unit of this invention. 本発明の中空埋込体ユニットを用いた中空スラブ工法による中空コンクリートスラブの施工方法の一工程を示す斜視図である。It is a perspective view which shows one process of the construction method of the hollow concrete slab by the hollow slab construction method using the hollow implant body unit of this invention.

＜中空埋込体ユニット＞
図１は、本発明の中空埋込体ユニットの一例を示す斜視図である。
中空埋込体ユニット１は、２本の平行な支持筋１０と；支持筋１０の下方に吊設されることによって支持筋１０の長手方向に所定ピッチで一列に連設された複数の球状の中空埋込体２０とを有する。 <Hollow embedded unit>
FIG. 1 is a perspective view showing an example of a hollow implant unit of the present invention.
The hollow implant unit 1 includes two parallel support bars 10; and a plurality of spherical support lines 10 arranged in a row at a predetermined pitch in the longitudinal direction of the support bars 10 by being suspended below the support bars 10. A hollow implant 20.

中空埋込体ユニット１における中空埋込体２０間のピッチとは、中空埋込体２０の中心と、この隣に位置する中空埋込体２０の中心との間隔のことである。中空埋込体２０間のピッチは、中空埋込体２０の寸法よりも少し長くされる。このことによって、中空埋込体２０は、この隣に位置する中空埋込体２０と接触することはなく、所定の隙間をもって連設される。   The pitch between the hollow implants 20 in the hollow implant unit 1 is the distance between the center of the hollow implant 20 and the center of the hollow implant 20 located adjacent thereto. The pitch between the hollow implants 20 is slightly longer than the dimensions of the hollow implants 20. As a result, the hollow implant 20 does not come into contact with the hollow implant 20 located next to the hollow implant 20 and is continuously provided with a predetermined gap.

中空埋込体ユニット１における中空埋込体２０間のピッチ、中空埋込体２０間の隙間の幅、中空埋込体２０の寸法は、最終的に形成される中空コンクリートスラブに要求される強度、遮音性等に応じて適宜設計される、中空コンクリートスラブの厚さ、中空コンクリートスラブの中空部の大きさ、中空部の間隔等に応じて、適宜決定すればよい。
中空埋込体ユニット１における中空埋込体２０の数（中空埋込体ユニット１の長さ）は、中空埋込体ユニットの取扱性に応じて適宜決定すればよく、図示例の中空埋込体ユニット１においては、中空埋込体２０の数は５つである。 The pitch between the hollow implants 20 in the hollow implant unit 1, the width of the gap between the hollow implants 20, and the dimensions of the hollow implant 20 are the strength required for the hollow concrete slab to be finally formed. What is necessary is just to determine suitably according to the thickness of the hollow concrete slab, the magnitude | size of the hollow part of a hollow concrete slab, the space | interval of a hollow part, etc. which are designed suitably according to sound insulation.
The number of hollow implants 20 in the hollow implant unit 1 (the length of the hollow implant unit 1) may be determined as appropriate according to the handleability of the hollow implant unit. In the body unit 1, the number of the hollow implants 20 is five.

（支持筋）
支持筋１０は、複数の中空埋込体２０を所定ピッチで一列に連設するための部材であり、かつコンクリート打設時には上端筋に固定されて中空埋込体２０の浮き上がりを抑制する部材でもある。 (Support muscle)
The support bar 10 is a member for connecting a plurality of hollow implants 20 in a line at a predetermined pitch, and is also a member that is fixed to the upper end bar when placing concrete and suppresses the floating of the hollow implants 20. is there.

支持筋１０は、図２に示すように、棒状の支持筋本体１２と；中空埋込体２０のピッチと同じピッチで中空埋込体２０の数と同じ数だけ支持筋本体１２に形成され、支持筋本体１２の長手方向に直交する方向に突出した係止用フランジ部１４と；支持筋本体１２の端部近傍に形成され、支持筋本体１２の長手方向に直交する方向に突出した２つ連結用フランジ部１６とを有する。   As shown in FIG. 2, the supporting muscles 10 are formed on the supporting muscle main body 12 in the same number as the number of the hollow implants 20 at the same pitch as the pitch of the hollow implants 20; A locking flange portion 14 projecting in a direction perpendicular to the longitudinal direction of the supporting muscle main body 12; two protruding portions formed in the vicinity of the end portion of the supporting muscle main body 12 and perpendicular to the longitudinal direction of the supporting muscle main body 12 And a connecting flange portion 16.

支持筋本体１２の長さや太さは、中空埋込体２０の数に応じて適宜決定すればよい。
係止用フランジ部１４の、支持筋本体１２から突出した長さは、後述する中空埋込体２０の支持筋係止部４０を構成するガイド溝４２に係合できる程度の長さであればよい。 The length and thickness of the supporting muscle main body 12 may be appropriately determined according to the number of hollow implants 20.
The length of the locking flange portion 14 protruding from the support bar main body 12 is a length that can be engaged with a guide groove 42 that constitutes a support bar lock portion 40 of the hollow implant 20 to be described later. Good.

連結用フランジ部１６の、支持筋本体１２から突出した長さは、２つの支持筋１０を連結する際に、一方の支持筋１０の連結用フランジ部１６と他方の支持筋１０の連結用フランジ部１６とを確実に突き合わせることができる程度の長さであればよい。
連結用フランジ部１６とこれに最も近い係止用フランジ部１４との間隔は、係止用フランジ部１４間のピッチの半分とされる。 The length of the connecting flange portion 16 protruding from the support bar main body 12 is such that when the two support bars 10 are connected, the connection flange part 16 of one support bar 10 and the connection flange of the other support bar 10 are connected. It is sufficient that the length is such that the portion 16 can be reliably abutted.
The interval between the connecting flange portion 16 and the locking flange portion 14 closest thereto is half the pitch between the locking flange portions 14.

（中空埋込体）
中空埋込体２０は、中空コンクリートスラブ内における中空部を形成するための球状の部材である。
中空埋込体２０の材料としては、プラスチック（ポリプロピレン等）が挙げられる。
中空埋込体２０は、例えば、射出成形法等によってプラスチックを一体成形することによって製造される。 (Hollow embedded body)
The hollow embedded body 20 is a spherical member for forming a hollow portion in the hollow concrete slab.
Examples of the material of the hollow implant 20 include plastic (polypropylene or the like).
The hollow implant 20 is manufactured, for example, by integrally molding plastic by an injection molding method or the like.

中空埋込体２０は、図３〜図６に示すように、内部に中空部を有し、半球状の第１の分割外殻２２と半球状の第２の分割外殻２４とに分割可能な外殻２６と；第１の分割外殻２２と第２の分割外殻２４とをその開口周縁部２７にて連結するヒンジ部２８と；第１の分割外殻２２の開口周縁部２７に設けられた３つの係止爪部３０と；第２の分割外殻２４の開口周縁部２７に設けられた３つの係止穴部３２と；第１の分割外殻２２および第２の分割外殻２４の開口周縁部２７から表面に沿って外殻２６の分割面に直交する方向に延びる６つの荷崩れ防止リブ３４と；第１の分割外殻２２および第２の分割外殻２４の開口周縁部２７に形成された４つの嵌合凹部３６と；外殻２６の中心を挟んでヒンジ部２８とは反対側の第１の分割外殻２２および第２の分割外殻２４の開口周縁部２７の近傍の外殻の表面に設けられた２つの支持筋係止部４０とを有する。   As shown in FIGS. 3 to 6, the hollow implant 20 has a hollow portion inside and can be divided into a hemispherical first divided outer shell 22 and a hemispherical second divided outer shell 24. An outer shell 26; a hinge portion 28 for connecting the first divided outer shell 22 and the second divided outer shell 24 at an opening peripheral edge 27 thereof; and an opening peripheral edge 27 of the first divided outer shell 22 Three locking claw portions 30 provided; three locking hole portions 32 provided in the opening peripheral edge portion 27 of the second divided outer shell 24; first divided outer shell 22 and the second divided outer portion Six load collapse prevention ribs 34 extending from the opening peripheral edge 27 of the shell 24 along the surface in a direction perpendicular to the dividing surface of the outer shell 26; and the openings of the first divided outer shell 22 and the second divided outer shell 24 Four fitting recesses 36 formed in the peripheral portion 27; a first divided outer shell 22 on the opposite side of the hinge portion 28 across the center of the outer shell 26 and Having two supporting muscles locking portion 40 provided on the surface of the shell in the vicinity of the opening edge 27 of the second split shell 24.

第１の分割外殻２２および第２の分割外殻２４は、外殻２６を分割面にて二分割した半球状の部材であり、それぞれの開口周縁部２７を重ね合わせることによって中空部を有する外殻２６を形成する。
分割面とは、外殻２６が閉じている状態では、第１の分割外殻２２の開口周縁部２７と第２の分割外殻２４の開口周縁部２７との境界線に囲まれた境界面であり、外殻２６が開いている状態では、第１の分割外殻２２の開口周縁部２７に囲まれた開口面および第２の分割外殻２４の開口周縁部２７に囲まれた開口面である。 The first divided outer shell 22 and the second divided outer shell 24 are hemispherical members obtained by dividing the outer shell 26 into two at the dividing surface, and have a hollow portion by overlapping the respective opening peripheral edges 27. An outer shell 26 is formed.
The split surface is a boundary surface surrounded by a boundary line between the opening peripheral edge 27 of the first split outer shell 22 and the opening peripheral edge 27 of the second split outer shell 24 in a state where the outer shell 26 is closed. When the outer shell 26 is open, the opening surface surrounded by the opening peripheral edge 27 of the first divided outer shell 22 and the opening surface surrounded by the opening peripheral edge 27 of the second divided outer shell 24. It is.

ヒンジ部２８は、図５に示すように、外殻２６を第１の分割外殻２２および第２の分割外殻２４に二分割して開いた状態において、第１の分割外殻２２の開口周縁部２７と第２の分割外殻２４と開口周縁部２７とが最も接近する、開口周縁部２７上の点（以下、基準点Ａという。）を挟むように離間して２箇所設けられる。   As shown in FIG. 5, the hinge portion 28 opens the first divided outer shell 22 in a state where the outer shell 26 is divided into a first divided outer shell 22 and a second divided outer shell 24. Two points are provided so as to sandwich a point on the opening peripheral part 27 (hereinafter referred to as a reference point A) where the peripheral part 27, the second divided outer shell 24 and the opening peripheral part 27 are closest to each other.

ヒンジ部２８には、その中央に、基準点Ａと外殻２６の中心とを結ぶ線に直交する方向に延びる筋状の薄肉部３８が形成される。薄肉部３８においてヒンジ部２８を折り曲げることによって、図６に示すように、薄肉部３８が回動軸となって、ヒンジ部２８に接続する第１の分割外殻２２および第２の分割外殻２４が回動自在となり、その結果、外殻２６が開閉自在となる。   The hinge portion 28 is formed with a streak-like thin portion 38 extending in a direction perpendicular to a line connecting the reference point A and the center of the outer shell 26 at the center thereof. As shown in FIG. 6, the first split outer shell 22 and the second split outer shell connected to the hinge portion 28 with the thin wall portion 38 serving as a rotation shaft by bending the hinge portion 28 in the thin wall portion 38. As a result, the outer shell 26 can be opened and closed.

係止爪部３０は、図５に示すように、第１の分割外殻２２の開口周縁部２７の基準点Ａを含めて、開口周縁部２７を円周四等分する４つの点のうち、基準点Ａを除く３つの点Ｂにおける開口周縁部２７から外方に突出して形成される。
係止穴部３２は、図５に示すように、第２の分割外殻２４の開口周縁部２７の基準点Ａを含めて、開口周縁部２７を円周四等分する４つの点のうち、基準点Ａを除く３つの点Ｃにおける開口周縁部２７に形成される。 As shown in FIG. 5, the locking claw portion 30 includes the reference point A of the opening peripheral portion 27 of the first divided outer shell 22, and includes four points that divide the opening peripheral portion 27 into four equal circumferences. , And projecting outward from the peripheral edge 27 of the opening at three points B excluding the reference point A.
As shown in FIG. 5, the locking hole portion 32 includes the reference point A of the opening peripheral portion 27 of the second divided outer shell 24, and includes four points that divide the opening peripheral portion 27 into four equal circumferences. , Formed at the opening peripheral edge 27 at three points C excluding the reference point A.

外殻２６を閉じて第１の分割外殻２２および第２の分割外殻２４を突き合わせた際、第１の分割外殻２２の開口周縁部２７の３つの係止爪部３０と、これらに対応する位置に形成された、第２の分割外殻２４の開口周縁部２７の３つの係止穴部３２とがそれぞれ係合し、第１の分割外殻２２と第２の分割外殻２４とが繋ぎ合わされる。   When the outer shell 26 is closed and the first divided outer shell 22 and the second divided outer shell 24 are brought into contact with each other, the three locking claws 30 of the opening peripheral edge portion 27 of the first divided outer shell 22, The three engaging hole portions 32 of the opening peripheral edge portion 27 of the second divided outer shell 24 formed at the corresponding positions are engaged with each other, and the first divided outer shell 22 and the second divided outer shell 24 are engaged. Are connected.

荷崩れ防止リブ３４は、第１の分割外殻２２の開口周縁部２７の基準点Ａを含めて、開口周縁部２７を円周四等分する４つの点のうち、支持筋係止部４０近傍の点Ｂを除く２つの点Ｂおよび基準点Ａにおける開口周縁部２７から表面に沿って外殻２６の分割面に直交する方向に延びて形成される板状部材である。また、荷崩れ防止リブ３４は、第２の分割外殻２４の開口周縁部２７の基準点Ａを含めて、開口周縁部２７を円周四等分する４つの点のうち、支持筋係止部４０近傍の点Ｃを除く２つの点Ｃおよび基準点Ａにおける開口周縁部２７から表面に沿って外殻２６の分割面に直交する方向に延びて形成される板状部材である。   The load collapsing prevention rib 34 includes the reference point A of the opening peripheral edge 27 of the first divided outer shell 22, and the support bar locking portion 40 among the four points that divide the opening peripheral edge 27 into four equal circumferences. It is a plate-like member formed to extend from the opening peripheral edge 27 at the two points B and the reference point A excluding the nearby point B along the surface in a direction perpendicular to the dividing surface of the outer shell 26. Further, the load collapse prevention rib 34 includes the reference point A of the opening peripheral edge 27 of the second divided outer shell 24 and includes four points that divide the opening peripheral edge 27 into four equal parts around the circumference. It is a plate-like member formed to extend from the opening peripheral edge portion 27 at the two points C and the reference point A excluding the point C in the vicinity of the portion 40 along the surface in a direction perpendicular to the dividing surface of the outer shell 26.

荷崩れ防止リブ３４は、図７に示すように、外殻２６を開いた状態にて中空埋込体２０を積み重ねた際に、下側の中空埋込体２０の荷崩れ防止リブ３４の端部と、上側の中空埋込体２０の第１の分割外殻２２および第２の分割外殻２４の開口周縁部２７とが当接し、下側の中空埋込体２０の第１の分割外殻２２および第２の分割外殻２４の外面と上側の中空埋込体２０の第１の分割外殻２２および第２の分割外殻２４の内面との間に適度な隙間を形成することによって、下側の中空埋込体２０と上側の中空埋込体２０とが密着して上側の中空埋込体２０を取り外しにくくなることを防止するとともに、運搬の際には積み重ねた中空埋込体２０の荷崩れを抑制するものである。   As shown in FIG. 7, the load collapse prevention rib 34 has an end of the load collapse prevention rib 34 of the lower hollow implant 20 when the hollow implants 20 are stacked with the outer shell 26 opened. And the opening peripheral edge portion 27 of the first split outer shell 22 and the second split outer shell 24 of the upper hollow implant 20 are in contact with each other, and the first split outer shell 20 of the lower hollow implant 20 By forming an appropriate gap between the outer surfaces of the shell 22 and the second split outer shell 24 and the inner surfaces of the first split outer shell 22 and the second split outer shell 24 of the upper hollow implant 20 The lower hollow implant 20 and the upper hollow implant 20 are prevented from coming into close contact with each other to prevent the upper hollow implant 20 from being difficult to remove, and the stacked hollow implants are stacked during transportation. 20 collapse of the load is suppressed.

嵌合凹部３６は、外殻２６の中心を挟んでヒンジ部２８とは反対側の第１の分割外殻２２および第２の分割外殻２４の開口周縁部２７に形成される。嵌合凹部３６の、外殻２６の分割面に直交する方向の延長線上には、後述する支持筋係止部４０を構成するフック部４４が存在する。
嵌合凹部３６は、図７に示すように、外殻２６を開いた状態にて中空埋込体２０を積み重ねた際に、下側の中空埋込体２０のフック部４４が、上側の中空埋込体２０の嵌合凹部３６に嵌合し、フック部４４と開口周縁部２７との干渉を防止するとともに、運搬の際には積み重ねた中空埋込体２０の荷崩れを抑制するものである。 The fitting recess 36 is formed in the opening peripheral edge 27 of the first split outer shell 22 and the second split outer shell 24 on the opposite side of the hinge portion 28 across the center of the outer shell 26. On the extension line of the fitting recess 36 in the direction orthogonal to the dividing surface of the outer shell 26, there is a hook portion 44 that constitutes a support bar locking portion 40 described later.
As shown in FIG. 7, when the hollow implants 20 are stacked with the outer shell 26 open, the fitting recesses 36 are formed so that the hook portions 44 of the lower hollow implants 20 It fits into the fitting recess 36 of the embedded body 20 and prevents interference between the hook portion 44 and the opening peripheral edge portion 27 and suppresses collapse of the stacked hollow embedded body 20 during transportation. is there.

（支持筋係止部）
支持筋係止部４０は、支持筋１０を係止するものである。
支持筋係止部４０は、外殻２６の中心を挟んでヒンジ部２８とは反対側の第１の分割外殻２２および第２の分割外殻２４の開口周縁部２７の近傍の外殻の表面にそれぞれ設けられ、２つの支持筋係止部４０は、２本の平行な支持筋１０のそれぞれに対応する。 (Supporting muscle locking part)
The support muscle locking portion 40 is for locking the support muscle 10.
The support bar locking portion 40 is formed on the outer shell in the vicinity of the opening peripheral edge 27 of the first divided outer shell 22 and the second divided outer shell 24 opposite to the hinge portion 28 across the center of the outer shell 26. Each of the two support bar locking portions 40 provided on the surface corresponds to each of the two parallel support bars 10.

支持筋係止部４０は、図８に示すように、外殻２６の表面に形成され、支持筋１０の係止用フランジ部１４が係合した状態で支持筋１０をその長手方向に直交する方向にスライドさせるガイド溝４２と；外殻２６の表面から突設され、ガイド溝４２の長手方向にスライドする支持筋１０の支持筋本体１２が挿入される凹部を有するフック部４４と；外殻２６の表面に設けられ、フック部４４の凹部に挿入された支持筋本体１２に当接してフック部４４の凹部の開口部側への支持筋１０のスライドを規制する規制部４６とを有する。   As shown in FIG. 8, the support bar locking portion 40 is formed on the surface of the outer shell 26, and the support bar 10 is orthogonal to the longitudinal direction of the support bar 10 in a state where the locking flange portion 14 of the support bar 10 is engaged. A guide groove 42 that slides in the direction; a hook portion 44 that has a recess protruding from the surface of the outer shell 26 and into which the support muscle main body 12 of the support muscle 10 that slides in the longitudinal direction of the guide groove 42 is inserted; 26, and a regulating portion 46 that abuts on the support muscle main body 12 inserted into the recess of the hook portion 44 and regulates the sliding of the support muscle 10 toward the opening side of the recess of the hook portion 44.

ガイド溝４２は、外殻２６の分割面に対して直交する方向に延びる。したがって、ガイド溝４２に係止用フランジ部１４が係合した支持筋１０の長手方向は、外殻２６の分割面と平行になる。   The guide groove 42 extends in a direction orthogonal to the dividing surface of the outer shell 26. Therefore, the longitudinal direction of the support bar 10 in which the locking flange portion 14 is engaged with the guide groove 42 is parallel to the split surface of the outer shell 26.

フック部４４は、ガイド溝４２を挟むように、分割面に平行な方向に離間して２箇所設けられる。
フック部４４の凹部は、外殻２６の分割面に対して直交する方向に、かつ開口周縁部２７側に向かって開口するように形成される。 The hook portions 44 are provided at two locations separated in a direction parallel to the dividing surface so as to sandwich the guide groove 42.
The concave portion of the hook portion 44 is formed so as to open in a direction orthogonal to the dividing surface of the outer shell 26 and toward the opening peripheral edge portion 27 side.

規制部４６は、ガイド溝４２を挟むように、分割面に平行な方向に離間して２箇所設けられる。
規制部４６は、外殻２６に固定された基端部から、フック部４４の凹部に挿入された支持筋本体１２に当接する先端部（自由端）に向かって、ガイド溝４２の長手方向と平行に延びる板状部材である。また、規制部４６の下方には、円弧状の段部４８が形成されることによって、外殻２６との間に間隙が形成されている。 The restricting portion 46 is provided at two locations so as to be separated from each other in a direction parallel to the dividing surface so as to sandwich the guide groove 42.
The restricting portion 46 extends from the proximal end portion fixed to the outer shell 26 toward the distal end portion (free end) that contacts the support muscle main body 12 inserted into the recess of the hook portion 44 and the longitudinal direction of the guide groove 42. A plate-like member extending in parallel. In addition, an arc-shaped stepped portion 48 is formed below the restricting portion 46, thereby forming a gap with the outer shell 26.

規制部４６は、フック部４４の凹部に支持筋本体１２を挿入する際には、支持筋本体１２に押圧されて下方に弾性変形するものであり、フック部４４の凹部に支持筋本体１２が挿入された後には、弾性変形が解除され、支持筋本体１２に先端部が当接して支持筋１０のスライドを規制するものであり、かつフック部４４の凹部から支持筋本体１２を離脱させる際には、作業者に押圧されて下方に弾性変形するものである。   When the support muscle main body 12 is inserted into the recess of the hook portion 44, the restricting portion 46 is pressed by the support muscle main body 12 and elastically deforms downward. The support muscle main body 12 is inserted into the recess of the hook portion 44. After the insertion, the elastic deformation is released, the tip of the support muscle main body 12 comes into contact with the support muscle main body 12 to regulate the slide of the support muscle 10, and the support muscle main body 12 is detached from the recess of the hook portion 44. In this, it is elastically deformed downward when pressed by an operator.

（作用効果）
以上説明した中空埋込体ユニット１にあっては、支持筋１０が所定ピッチで形成された複数の係止用フランジ部１４を有し、この係止用フランジ部１４が、中空埋込体２０の外殻２６の表面に設けられた支持筋係止部４０のガイド溝４２に係合するため、複数の中空埋込体２０を支持筋１０で一列に連設した際に、中空埋込体２０を所定ピッチで位置決めできる。 (Function and effect)
The hollow implant unit 1 described above has a plurality of locking flange portions 14 in which the support bars 10 are formed at a predetermined pitch. When the plurality of hollow implants 20 are arranged in a row with the support bars 10 in order to engage with the guide grooves 42 of the support bar locking portions 40 provided on the surface of the outer shell 26, the hollow implants 20 can be positioned at a predetermined pitch.

また、支持筋１０の係止用フランジ部１４が、ガイド溝４２に係合しているため、支持筋１０のその長手方向への移動が規制され、さらに、支持筋１０の支持筋本体１２が、中空埋込体２０の支持筋係止部４０のフック部４４の凹部に挿入され、かつ規制部４６によってフック部４４の凹部の開口部側への支持筋１０のスライドが規制されているため、中空埋込体２０を支持筋１０に固定できる。   Further, since the locking flange portion 14 of the support bar 10 is engaged with the guide groove 42, the movement of the support bar 10 in the longitudinal direction is restricted, and further, the support bar main body 12 of the support bar 10 is Since the insertion of the support muscle 10 into the concave portion of the hook portion 44 of the support muscle locking portion 40 of the hollow implant 20 and the restriction portion 46 restricts the sliding of the support muscle 10 toward the opening of the concave portion of the hook portion 44. The hollow implant 20 can be fixed to the support muscle 10.

また、支持筋１０が、支持筋本体１２の端部近傍に形成された２つの連結用フランジ部１６を有し、連結用フランジ部１６とこれに最も近い内側の係止用フランジ部１４との間隔が、係止用フランジ部１４間の所定ピッチの半分とされているため、図９に示すように、一方の支持筋１０の連結用フランジ部１６と他方の支持筋１０の連結用フランジ部１６とを突き合わせることによって、突き合わせ部分を挟んだ一方の支持筋１０の係止用フランジ部１４と他方の支持筋１０の係止用フランジ部１４との間隔が所定ピッチとほぼ同じになるように、２つの支持筋１０を連結できる。   Further, the supporting bar 10 has two connecting flange parts 16 formed in the vicinity of the end part of the supporting bar main body 12, and includes a connecting flange part 16 and an inner locking flange part 14 closest to the connecting flange part 16. Since the interval is half the predetermined pitch between the locking flange portions 14, as shown in FIG. 9, the connection flange portion 16 of one support bar 10 and the connection flange portion of the other support bar 10 are provided. 16 so that the interval between the locking flange portion 14 of one supporting bar 10 and the locking flange portion 14 of the other supporting bar 10 is substantially the same as a predetermined pitch. In addition, the two support muscles 10 can be connected.

また、規制部４６が、フック部４４の凹部に支持筋本体１２を挿入する際には、支持筋本体１２に押圧されて弾性変形するものであり、かつフック部４４の凹部に支持筋本体１２が挿入された後には、弾性変形が解除され、支持筋本体１２に先端部が当接して支持筋１０のスライドを規制するものであるため、支持筋係止部４０への支持筋１０の取り付けおよび固定を規制部４６の弾性変形によって容易に行うことができる。   Further, when the support portion main body 12 is inserted into the recess of the hook portion 44, the restricting portion 46 is elastically deformed by being pressed by the support muscle main body 12, and the support portion main body 12 is inserted into the recess of the hook portion 44. Since the elastic deformation is released and the tip of the support muscle 12 comes into contact with the support muscle main body 12 to regulate the slide of the support muscle 10, the support muscle 10 is attached to the support muscle locking portion 40. And fixing can be easily performed by elastic deformation of the restricting portion 46.

また、規制部４６が弾性変形するものであるため、フック部４４の凹部から支持筋本体１２を離脱させる際には、支持筋係止部４０からの支持筋１０の取り外しが、規制部４６の弾性変形によって容易に行うことができる。例えば、一列に連設した複数の中空埋込体２０のうち、中空埋込体２０の不具合等の理由で一部の中空埋込体２０を取り外す必要が生じた場合であっても、その中空埋込体２０のみを支持筋１０から取り外すことができる。   Further, since the restricting portion 46 is elastically deformed, when the support muscle main body 12 is detached from the concave portion of the hook portion 44, the removal of the support muscle 10 from the support muscle locking portion 40 is caused by the restriction portion 46. It can be easily performed by elastic deformation. For example, among the plurality of hollow implants 20 arranged in a row, even if it is necessary to remove some of the hollow implants 20 due to problems with the hollow implants 20, Only the implant 20 can be removed from the support muscle 10.

また、支持筋１０が２本であり、かつ中空埋込体２０がそれぞれの支持筋１０に対応した支持筋係止部４０を有するため、支持筋１０を回転軸とした中空埋込体２０の回転が抑制され、コンクリート打設の際の中空埋込体２０の浮き上がりを抑制できる。   Further, since the support muscles 10 are two and the hollow implants 20 have the support muscle locking portions 40 corresponding to the respective support muscles 10, the hollow implants 20 having the support muscles 10 as the rotation axis are used. The rotation is suppressed, and the floating of the hollow embedded body 20 during concrete placement can be suppressed.

また、中空埋込体２０が、二分割可能な外殻２６と、二分割された第１の分割外殻２２および第２の分割外殻２４をその開口周縁部２７にて連結するヒンジ部２８を有するため、外殻２６を開いた状態にて複数の中空埋込体２０または中空埋込体ユニット１を積み重ねることができ、外殻２６を閉じたままで運搬する場合よりも数多くの中空埋込体２０または中空埋込体ユニット１を運搬できる。   In addition, the hollow embedded body 20 has a hinge part 28 for connecting the outer shell 26 that can be divided into two parts, the first divided outer shell 22 and the second divided outer shell 24 that are divided into two at the opening peripheral edge part 27. Therefore, a plurality of hollow implants 20 or hollow implant units 1 can be stacked with the outer shell 26 open, and a larger number of hollow implants than when transporting with the outer shell 26 closed. The body 20 or the hollow implant unit 1 can be transported.

さらに、外殻２６の中心を挟んでヒンジ部２８とは反対側の開口周縁部２７の近傍に支持筋係止部４０が設けられているため、外殻２６を開いた状態にて複数の中空埋込体ユニット１を積み重ねる場合には、図７に示すように、支持筋１０が両側方に位置することになり、中空埋込体ユニット１を積み重ねる際に支持筋１０が邪魔になることはない。また、外殻２６を閉じた状態においては、図８に示すように、一列に連設された複数の中空埋込体２０の上方に２本の支持筋１０が平行に位置することになり、中空埋込体ユニット１の取扱性、および中空スラブ工法によって中空コンクリートスラブを形成する際の施工性が良好となる。   Further, since the support bar engaging portion 40 is provided in the vicinity of the opening peripheral edge portion 27 on the opposite side of the hinge portion 28 across the center of the outer shell 26, a plurality of hollows are opened in the state where the outer shell 26 is opened. When stacking the implant unit 1, as shown in FIG. 7, the support muscles 10 are located on both sides, and the support muscles 10 are obstructive when stacking the hollow implant unit 1. Absent. In the state where the outer shell 26 is closed, as shown in FIG. 8, the two support muscles 10 are positioned in parallel above the plurality of hollow implants 20 connected in a row, The handleability of the hollow embedded unit 1 and the workability when forming a hollow concrete slab by the hollow slab construction method are improved.

（他の形態）
なお、本発明の中空埋込体ユニットは、図示例の中空埋込体ユニット１に限定はされない。
例えば、中空埋込体の形状は、図示例の球状に限定はされず、楕円体形状であってもよく、立方体形状であってもよい。ただし、コンクリート打設時の圧力に対する強度の点から、球状または楕円体形状が好ましく、球状が特に好ましい。 (Other forms)
The hollow implant unit of the present invention is not limited to the hollow implant unit 1 in the illustrated example.
For example, the shape of the hollow implant is not limited to the spherical shape shown in the drawing, and may be an ellipsoid or a cube. However, spherical or ellipsoidal shape is preferable and spherical shape is particularly preferable from the viewpoint of strength against pressure during concrete pouring.

また、支持筋の本数（支持筋係止部４０の数）は、図示例の２本に限定はされず、１本であってもよく、３本以上であってもよい。ただし、支持筋１０を回転軸とした中空埋込体２０の回転が抑制され、コンクリート打設の際の中空埋込体２０の浮き上がりを抑制できる点から、支持筋の本数は複数本が好ましく、中空埋込体２０の連設のしやすさの点から、支持筋の本数は２本が特に好ましい。   Further, the number of support bars (the number of support bar locking portions 40) is not limited to two in the illustrated example, and may be one or three or more. However, since the rotation of the hollow implant 20 with the support bar 10 as the rotation axis is suppressed and the floating of the hollow implant 20 at the time of concrete placement can be suppressed, the number of the support bars is preferably plural, From the viewpoint of easy provision of the hollow implants 20, the number of support bars is particularly preferably two.

また、図１０に示すように、中空埋込体２０は、第１の分割外殻２２および第２の分割外殻２４のそれぞれの内面に、十字形の補強リブ４９が設けられていてもよい。開口面側に向いた補強リブ４９の端面は、外殻２６が開いた状態の中空埋込体２０を積み重ねやすい点から、外殻２６の該面の曲率半径と同じ曲率半径とすることが好ましい。
補強リブ４９を設けることによって、外殻２６の歪が抑制され、中空埋込体２０の外観がよくなる；外殻２６が開いた状態の中空埋込体２０を安定して積み重ねることができ、また、保管中の外殻２６の変形も抑制される；コンクリート打設時の圧力に対する中空埋込体２０の強度が増す；等の効果が発揮される。 As shown in FIG. 10, the hollow implant 20 may be provided with cross-shaped reinforcing ribs 49 on the inner surfaces of the first divided outer shell 22 and the second divided outer shell 24. . The end surface of the reinforcing rib 49 facing the opening surface is preferably set to have the same radius of curvature as the radius of curvature of the surface of the outer shell 26 from the viewpoint of easy stacking of the hollow implants 20 with the outer shell 26 open. .
By providing the reinforcing ribs 49, distortion of the outer shell 26 is suppressed, and the appearance of the hollow implant 20 is improved; the hollow implant 20 with the outer shell 26 open can be stably stacked, and The deformation of the outer shell 26 during storage is also suppressed; the strength of the hollow embedded body 20 against the pressure at the time of placing the concrete is increased;

＜施工方法＞
以下、本発明の中空埋込体ユニットを用いた中空スラブ工法による中空コンクリートスラブの施工方法について説明する。
まず、図１１に示すように、型枠パネル５０の上に下端筋５２および上端筋５４をそれぞれ格子状に、かつ格子の升目の位置が高さ方向で一致するように配筋し、下端筋５２同士が交差する箇所および上端筋５４同士が交差する箇所において結束する。さらに、上端筋５４の位置決めを行うためのフックアンカー５６を複数用意し、フックアンカー５６の上端のフックを上端筋５４に引っ掛けた状態で、フックアンカー５６の下端のアンカーを型枠パネル５０の取付孔に挿し込み、固定する。 <Construction method>
Hereinafter, the construction method of the hollow concrete slab by the hollow slab construction method using the hollow embedded body unit of the present invention will be described.
First, as shown in FIG. 11, the lower end stripes 52 and the upper end stripes 54 are arranged on the form panel 50 in a lattice shape so that the positions of the grids coincide with each other in the height direction. Bundling is performed at a location where the 52 intersects with each other and a location where the upper end bars 54 intersect. Further, a plurality of hook anchors 56 for positioning the upper end stripe 54 are prepared, and the lower end anchor of the hook anchor 56 is attached to the formwork panel 50 in a state where the upper end hook 54 is hooked on the upper end stripe 54. Insert it into the hole and fix it.

ついで、図１２に示すように、下端筋５２の格子の１つの升目とこれに対応する上端筋５４の格子の１つの升目とそれぞれの升目の角同士を結ぶ仮想線とで形成される略立方体の配置用空間のそれぞれに中空埋込体２０が１つ１つ挿入されるように、上端筋５４の上方から中空埋込体ユニット１を複数配置し、中空埋込体ユニット１の支持筋１０が上端筋５４の上に掛け渡された状態にて、支持筋１０と上端筋５４とが交差する箇所において結束する。   Next, as shown in FIG. 12, a substantially cube formed by one grid of the lattice of the lower streak 52, one grid of the grid of the upper streak 54 corresponding thereto, and a virtual line connecting the corners of each grid. A plurality of hollow implant units 1 are arranged from above the upper end muscle 54 so that the hollow implants 20 are inserted one by one in each of the arrangement spaces, and the support bars 10 of the hollow implant unit 1 are arranged. In a state where is stretched over the upper end muscle 54, the support muscle 10 and the upper end muscle 54 are bound at the intersection.

ついで、図１３に示すように、下端筋５２、中空埋込体ユニット１および上端筋５４が完全に埋まるように型枠パネル５０の上にコンクリート５８を打設する。
コンクリートが硬化した後、型枠パネル５０を脱型し、中空コンクリートスラブが完成する。 Next, as shown in FIG. 13, concrete 58 is placed on the formwork panel 50 so that the lower end reinforcement 52, the hollow implant unit 1 and the upper end reinforcement 54 are completely embedded.
After the concrete is hardened, the formwork panel 50 is removed, and a hollow concrete slab is completed.

本発明の中空埋込体ユニットは、中空スラブ工法によって中空コンクリートスラブを施工する際の、中空埋埋込体として有用である。   The hollow embedded body unit of the present invention is useful as a hollow embedded body when a hollow concrete slab is constructed by a hollow slab method.

１ 中空埋込体ユニット
１０ 支持筋
１２ 支持筋本体
１４ 係止用フランジ部
１６ 連結用フランジ部
２０ 中空埋込体
２２ 第１の分割外殻
２４ 第２の分割外殻
２６ 外殻
２７ 開口周縁部
２８ ヒンジ部
４０ 支持筋係止部
４２ ガイド溝
４４ フック部
４６ 規制部 DESCRIPTION OF SYMBOLS 1 Hollow embedding unit 10 Supporting muscle 12 Supporting muscle main body 14 Locking flange part 16 Connecting flange part 20 Hollow embedded body 22 1st division | segmentation outer shell 24 2nd division | segmentation outer shell 26 Outer shell 27 Opening peripheral part 28 Hinge part 40 Support bar locking part 42 Guide groove 44 Hook part 46 Restriction part

Claims (5)

複数の中空埋込体と、
前記中空埋込体を所定ピッチで一列に連設する支持筋と
を有する中空埋込体ユニットであって、
前記支持筋が、
棒状の支持筋本体と、
前記支持筋本体に所定ピッチで形成され、前記支持筋本体の長手方向に直交する方向に突出した複数のフランジ部と
を有し、
前記中空埋込体が、
内部に中空部を有する外殻と、
前記外殻の表面に設けられた、前記支持筋を係止する支持筋係止部と
を有し、
前記支持筋係止部が、
前記外殻の表面に形成され、前記支持筋のフランジ部が係合した状態で前記支持筋をその長手方向に直交する方向にスライドさせるガイド溝と、
前記外殻の表面から突設され、前記ガイド溝の長手方向にスライドする前記支持筋の支持筋本体が挿入される凹部を有するフック部と、
前記外殻の表面に設けられ、前記フック部の凹部に挿入された前記支持筋本体に当接して前記フック部の凹部の開口部側への前記支持筋のスライドを規制する規制部と
を有する、中空埋込体ユニット。 A plurality of hollow implants;
A hollow implant unit having a support bar that connects the hollow implants in a row at a predetermined pitch,
The support muscle is
A rod-shaped support muscle body;
A plurality of flange portions formed at a predetermined pitch on the support muscle main body and projecting in a direction orthogonal to the longitudinal direction of the support muscle main body;
The hollow implant is
An outer shell having a hollow portion inside,
A support muscle locking portion provided on a surface of the outer shell for locking the support muscle;
The support muscle locking portion is
A guide groove that is formed on the surface of the outer shell and slides the support bar in a direction perpendicular to the longitudinal direction in a state where the flange portion of the support bar is engaged;
A hook portion protruding from the surface of the outer shell and having a recess into which a support muscle main body of the support muscle that slides in the longitudinal direction of the guide groove is inserted;
A regulating portion that is provided on the surface of the outer shell and that abuts on the support muscle main body inserted into the recess of the hook portion and regulates sliding of the support muscle toward the opening side of the recess of the hook portion. Hollow embedded unit. 前記支持筋のフランジ部が、前記中空埋込体の数よりも２つ多くに形成され、それらのうち両側に位置するフランジ部は、前記支持筋本体の端部近傍に形成され、かつ該フランジ部とこれに最も近い内側のフランジ部との間隔が、前記所定ピッチの半分である、請求項１に記載の中空埋込体ユニット。   The number of the flange portions of the support muscles is two more than the number of the hollow implants, and the flange portions located on both sides thereof are formed in the vicinity of the end portion of the support muscle main body, and the flanges. The hollow implantable unit according to claim 1, wherein an interval between the portion and an inner flange portion closest to the portion is half of the predetermined pitch. 前記規制部が、前記フック部の凹部に前記支持筋本体を挿入する際には、前記支持筋本体に押圧されて弾性変形するものであり、かつ前記フック部の凹部に前記支持筋本体が挿入された後には、前記支持筋本体に先端部が当接して前記支持筋のスライドを規制するものである、請求項１または２に記載の中空埋込体ユニット。   When the restricting portion inserts the support muscle main body into the recess of the hook portion, it is elastically deformed by being pressed by the support muscle main body, and the support muscle main body is inserted into the recess of the hook portion. 3. The hollow implant unit according to claim 1, wherein a tip portion of the support muscle main body comes into contact with the support muscle main body and the slide of the support muscle is regulated after being done. 前記支持筋が、２本であり、
前記中空埋込体が、それぞれの支持筋に対応した前記支持筋係止部を有する、請求項１〜３のいずれかに記載の中空埋込体ユニット。 The supporting muscles are two,
The hollow implant body unit according to any one of claims 1 to 3, wherein the hollow implant body has the support bar engaging portions corresponding to the respective support bars. 前記中空埋込体が、
二分割可能な外殻と、
二分割された外殻同士をその開口周縁部にて連結するヒンジ部と、
前記外殻の中心を挟んで前記ヒンジ部とは反対側の開口周縁部の近傍に設けられた前記支持筋係止部と
を有する、請求項１〜４のいずれかに記載の中空埋込体ユニット。 The hollow implant is
A shell that can be divided into two parts;
A hinge portion that connects the outer shells divided into two at the peripheral edge of the opening;
The hollow implant according to any one of claims 1 to 4, further comprising: a supporting muscle locking portion provided in the vicinity of an opening peripheral portion on the opposite side of the hinge portion across the center of the outer shell. unit.
JP2010092381A 2010-04-13 2010-04-13 Hollow embedded unit Expired - Fee Related JP5124613B2 (en)

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