JP2016205101A - Steel plate concrete structure - Google Patents

Steel plate concrete structure Download PDF

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JP2016205101A
JP2016205101A JP2015091881A JP2015091881A JP2016205101A JP 2016205101 A JP2016205101 A JP 2016205101A JP 2015091881 A JP2015091881 A JP 2015091881A JP 2015091881 A JP2015091881 A JP 2015091881A JP 2016205101 A JP2016205101 A JP 2016205101A
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steel plate
main steel
concrete structure
rib
main
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太田 和也
Kazuya Ota
和也 太田
神野 靖夫
Yasuo Jinno
靖夫 神野
敏彦 平間
Toshihiko Hirama
敏彦 平間
田村 正
Tadashi Tamura
正 田村
瑛里子 森泉
Eriko Moriizumi
瑛里子 森泉
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a steel plate concrete structure capable of ensuring desired rigidity and effectively improving bearing force.SOLUTION: A steel plate concrete structure A is made by charging a concrete 4 between one main steel plate 1 and the other main steel plate 2 that is disposed with a predetermined distance from one main steel plate 1. A vertical rib steel plate 7 through which an opening 7a is penetrated is installed by integrally connecting to the one main steel plate 1 and the other main steel plate 2. A shear reinforcement 8 is provided by being inserted in the opening 7a at one end and the other end to thereby connect the one rib steel plate 7 that is connected to one main steel plate 1 and connecting the other rib steel plate 7 that is connected to the other main steel plate 2.SELECTED DRAWING: Figure 2

Description

本発明は、外殻鋼板内にコンクリートを一体に充填してなる鋼板コンクリート構造に関する。   The present invention relates to a steel plate concrete structure in which concrete is integrally filled in a shell steel plate.

鋼板コンクリート構造(SC構造)は、外殻となる主鋼板を型枠としてその内部にコンクリートを充填し、主鋼板の内面に植設したスタッドボルトを介して主鋼板とコンクリートを一体化して構成される。また、このような鋼板コンクリート構造は大断面の頑強な構造部材を効率的に施工できる。このため、例えば特許文献1に示されるように原子力施設への適用が提案、実用化されている。   The steel plate concrete structure (SC structure) is composed of the main steel plate that forms the outer shell as a formwork, filled with concrete inside, and integrated with the main steel plate and concrete via stud bolts planted on the inner surface of the main steel plate. The Moreover, such a steel plate concrete structure can efficiently construct a robust structural member having a large cross section. For this reason, for example, as shown in Patent Document 1, application to a nuclear facility has been proposed and put into practical use.

一方、原子力発電所の建屋の屋根スラブには、飛来物に対する防護機能が要求されている。そして、新設する建屋への飛来物防護対策としては、鋼板コンクリート構造を採用し、且つ面外せん断耐力を向上させるために格子状の縦リブ鋼板で上下の主鋼板を緊結する構造形式が有効な手法として提案されている。   On the other hand, the roof slab of a nuclear power plant building is required to have a protection function against flying objects. And, as a measure to protect flying objects for the newly built building, a steel plate concrete structure is adopted, and a structure type in which the upper and lower main steel plates are joined together with grid-like vertical rib steel plates is effective to improve the out-of-plane shear strength. Proposed as a method.

特許第3309290号公報Japanese Patent No. 3309290

しかしながら、上記従来の格子状の縦リブ鋼板で上下の主鋼板を緊結する構造形式においては、格子状の縦リブ鋼板によって面外せん断耐力が大幅に向上する反面、コンクリートの連続性が縦リブ鋼板によって分断されることにより鋼板コンクリート構造(屋根スラブ)全体の剛性が低下し、破壊モードが変わる。これにより、鋼板コンクリート構造全体のせん断耐力が縦リブ鋼板間にあるコンクリートの一番弱い所で決まってしまうという問題があった。   However, in the structure type in which the upper and lower main steel plates are joined with the conventional grid-like vertical rib steel plate, the out-of-plane shear strength is greatly improved by the grid-like vertical rib steel plate, but the continuity of the concrete is vertical rib steel plate. The rigidity of the steel plate concrete structure (roof slab) as a whole is reduced and the fracture mode is changed. Thereby, there existed a problem that the shear strength of the whole steel plate concrete structure was decided in the weakest part of the concrete between vertical rib steel plates.

本発明は、上記事情に鑑み、所望の剛性を確保しつつ効果的に耐力を向上させることを可能にした鋼板コンクリート構造を提供することを目的とする。   In view of the above circumstances, an object of the present invention is to provide a steel plate concrete structure capable of effectively improving yield strength while ensuring desired rigidity.

上記の目的を達するために、この発明は以下の手段を提供している。   In order to achieve the above object, the present invention provides the following means.

本発明の鋼板コンクリート構造は、一方の主鋼板と、該一方の主鋼板と所定の間隔をあけて配設された他方の主鋼板との間にコンクリートを充填してなる鋼板コンクリート構造において、前記一方の主鋼板と、前記他方の主鋼板にそれぞれ、開口が貫通形成されたリブ鋼板を一体に接続して設け、且つ、前記開口に挿通しつつ、前記一方の主鋼板に接続した一方のリブ鋼板と、前記他方の主鋼板に接続した他方のリブ鋼板とにそれぞれ一端部側と他端部側を接続してせん断補強筋を設けて構成されていることを特徴とする。   The steel plate concrete structure of the present invention is a steel plate concrete structure in which concrete is filled between one main steel plate and the other main steel plate disposed at a predetermined interval from the one main steel plate, One main steel plate and the other main steel plate are each provided with a rib steel plate having an opening formed therethrough, and one rib connected to the one main steel plate while being inserted through the opening One end side and the other end side are connected to the steel plate and the other rib steel plate connected to the other main steel plate, respectively, and shear reinforcing bars are provided.

本発明の鋼板コンクリート構造においては、内側主鋼板と外側主鋼板にそれぞれ接続して設けられた短尺のリブ鋼板に複数の開口が設けられているため、これらリブ鋼板が穴あき鋼板ジベルとして機能する。これにより、鋼板コンクリート構造の曲げ耐力が向上するとともに、座屈補強効果を得ることができる。   In the steel plate concrete structure of the present invention, since a plurality of openings are provided in the short rib steel plate provided to be connected to the inner main steel plate and the outer main steel plate, these rib steel plates function as perforated steel plate gibbels. . Thereby, while the bending strength of a steel plate concrete structure improves, the buckling reinforcement effect can be acquired.

さらに、複数の開口を通じて、内側主鋼板と外側主鋼板にそれぞれ接続して設けられた一対のリブ鋼板に緊結して複数のせん断補強筋が取り付けられているため、これらせん断補強筋によって縦リブ鋼板と同等のせん断補強効果を得ることができる。すなわち、縦リブ鋼板をせん断補強鉄筋に換えることで、コンクリートの連続性を分断することをなくしつつ、縦リブ鋼板と同等のせん断補強効果を得ることができる。また、これらせん断補強筋、リブ鋼板によって、破壊モードも鋼板コンクリート構造全体で決まり、 部材断面として合理的なものにすることができる。   Furthermore, since a plurality of shear reinforcement bars are attached to a pair of rib steel sheets that are connected to the inner main steel plate and the outer main steel sheet through a plurality of openings, the vertical rib steel plates are attached by these shear reinforcement bars. The same shear reinforcement effect can be obtained. That is, by replacing the longitudinal rib steel plate with a shear reinforcing steel bar, it is possible to obtain a shear reinforcement effect equivalent to that of the longitudinal rib steel plate without breaking the continuity of the concrete. In addition, these shear reinforcement bars and rib steel plates also determine the failure mode for the entire steel plate concrete structure, and can make the member cross section rational.

また、コンクリートの打設口の位置の制約がなくなり、さらに断面内での溶接がいらないことから、施工性を大幅に向上することが可能になる。   In addition, there is no restriction on the position of the concrete placement port, and further welding in the cross section is not required, so that the workability can be greatly improved.

本発明の一実施形態に係る鋼板コンクリート構造を示す平面図である。It is a top view which shows the steel plate concrete structure which concerns on one Embodiment of this invention. 図1のX−X線矢視図であり、本発明の一実施形態に係る鋼板コンクリート構造を示す縦断面図である。It is a XX arrow line view of FIG. 1, and is a longitudinal cross-sectional view which shows the steel plate concrete structure which concerns on one Embodiment of this invention.

以下、図1及び図2を参照し、本発明の一実施形態に係る鋼板コンクリート構造について説明する。   Hereinafter, with reference to FIG.1 and FIG.2, the steel plate concrete structure which concerns on one Embodiment of this invention is demonstrated.

本実施形態の鋼板コンクリート構造Aは、例えば原子力施設の建屋の屋根スラブなどのスラブであり、図1及び図2に示すように、内側主鋼板(一方の主鋼板)1と、内側主鋼板1に対して外側に所定の間隔をあけて配設された外側主鋼板(他方の主鋼板)2と、内側主鋼板1及び外側主鋼板2の内面にそれぞれ植設された複数のスタッド3と、内側主鋼板1と外側主鋼板2の間に充填されるコンクリート4とを備えて構成されている。
なお、図1及び図2において、符号5は壁構造体、符号6はコンクリート打設開口を示している。
The steel plate concrete structure A of the present embodiment is a slab such as a roof slab of a building of a nuclear facility, for example, and as shown in FIGS. 1 and 2, an inner main steel plate (one main steel plate) 1 and an inner main steel plate 1. An outer main steel plate (the other main steel plate) 2 disposed on the outer side with a predetermined interval, and a plurality of studs 3 respectively planted on the inner surface of the inner main steel plate 1 and the outer main steel plate 2; A concrete 4 filled between the inner main steel plate 1 and the outer main steel plate 2 is provided.
In FIGS. 1 and 2, reference numeral 5 denotes a wall structure, and reference numeral 6 denotes a concrete placement opening.

さらに、本実施形態の鋼板コンクリート構造Aにおいては、内側主鋼板1と外側主鋼板2のそれぞれに、内面に接続して短尺のリブ鋼板7が設けられている。また、この短尺のリブ鋼板7は、内側主鋼板1と外側主鋼板2にそれぞれ複数設けられるとともに、所定の間隔をあけて格子状に配設されている。さらに、内側主鋼板1側と外側主鋼板2側の一対のリブ鋼板7が上下方向(主鋼板1、2に直交する方向)で対峙するように設けられている。   Furthermore, in the steel plate concrete structure A of this embodiment, each of the inner main steel plate 1 and the outer main steel plate 2 is provided with a short rib steel plate 7 connected to the inner surface. A plurality of the short rib steel plates 7 are provided on the inner main steel plate 1 and the outer main steel plate 2, respectively, and are arranged in a grid pattern with a predetermined interval. Further, a pair of rib steel plates 7 on the inner main steel plate 1 side and the outer main steel plate 2 side are provided so as to face each other in the vertical direction (direction orthogonal to the main steel plates 1 and 2).

また、各短尺のリブ鋼板7には、所定の間隔をあけ(等間隔で)、円形状の開口7aが複数貫通形成されている。そして、この上下一対のリブ鋼板7の開口7aにそれぞれ一端部側と他端部側を挿通しつつ緊結してせん断補強筋8が取り付けられている。   Each of the short rib steel plates 7 is formed with a plurality of circular openings 7a at predetermined intervals (equal intervals). The shear reinforcement bars 8 are attached to the openings 7a of the pair of upper and lower rib steel plates 7 while being fastened while being inserted through one end side and the other end side.

これにより、複数のせん断補強筋8が、その一端部側を一方のリブ鋼板7を介して内側主鋼板1に、他端部側を他方のリブ鋼板7を介して外側主鋼板2にそれぞれ接続して配設され、且つ、横方向(主鋼板1、2に沿う方向)に所定の間隔をあけて並設されている。   Accordingly, the plurality of shear reinforcement bars 8 are connected at one end side to the inner main steel plate 1 via one rib steel plate 7 and to the outer main steel plate 2 at the other end side via the other rib steel plate 7. And arranged in parallel in the horizontal direction (direction along the main steel plates 1 and 2) with a predetermined interval.

そして、このように構成した本実施形態の鋼板コンクリート構造Aにおいては、まず、内側主鋼板1と外側主鋼板2にそれぞれ接続して設けられた短尺のリブ鋼板7に複数の開口7aが設けられているため、これらリブ鋼板7が穴あき鋼板ジベルとして機能する。これにより、鋼板コンクリート構造Aの曲げ耐力が向上するとともに、座屈補強効果を得ることができる。   And in the steel plate concrete structure A of this embodiment comprised in this way, first, the some opening 7a is provided in the short rib steel plate 7 provided in connection with the inner main steel plate 1 and the outer main steel plate 2, respectively. Therefore, these rib steel plates 7 function as perforated steel plate gibbles. Thereby, while the bending strength of the steel-plate concrete structure A improves, the buckling reinforcement effect can be acquired.

さらに、複数の開口を7a通じて、内側主鋼板1と外側主鋼板2にそれぞれ接続して設けられた上下のリブ鋼板7に緊結して複数のせん断補強筋8が取り付けられているため、これらせん断補強筋8によって縦リブ鋼板と同等のせん断補強効果を得ることができる。すなわち、縦リブ鋼板をせん断補強鉄筋8に換えることで、コンクリート4の連続性を分断することをなくしつつ、縦リブ鋼板と同等のせん断補強効果を得ることができる。また、これらせん断補強筋8、リブ鋼板7によって、破壊モードも鋼板コンクリート構造A全体(スラブ全体)で決まり、 部材断面として合理的なものにすることができる。   Further, since a plurality of shear reinforcement bars 8 are attached to the upper and lower rib steel plates 7 connected to the inner main steel plate 1 and the outer main steel plate 2 through the plurality of openings 7a, respectively. A shear reinforcement effect equivalent to that of the longitudinal rib steel plate can be obtained by the shear reinforcement bars 8. That is, by replacing the longitudinal rib steel plate with the shear reinforcing steel bar 8, the shear reinforcement effect equivalent to that of the longitudinal rib steel plate can be obtained without breaking the continuity of the concrete 4. Further, the failure mode is determined by the whole steel plate concrete structure A (the whole slab) by the shear reinforcing bar 8 and the rib steel plate 7, and can be made rational as a member cross section.

また、施工においても、従来の縦リブ鋼板を設けた場合には縦リブ鋼板を部材断面内で溶接する必要があり、コンクリート4の打設にあたっては格子状の縦リブ鋼板間ごとにコンクリート打設口6やエアー抜き開口が必要になるのに対し、本実施形態の鋼板コンクリート構造Aにおいては、コンクリート打設口6の位置の制約がないことや断面内での溶接がいらないことから、施工性を大幅に向上することが可能になる。   Also, in the construction, when the conventional vertical rib steel plate is provided, it is necessary to weld the vertical rib steel plate within the cross section of the member. In contrast to the necessity of the opening 6 and the air vent opening, in the steel plate concrete structure A of the present embodiment, there is no restriction on the position of the concrete placing opening 6 and welding in the cross section is not required. Can be greatly improved.

以上、本発明に係る鋼板コンクリート構造の一実施形態について説明したが、本発明は上記の一実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。   As mentioned above, although one Embodiment of the steel plate concrete structure concerning this invention was described, this invention is not limited to said one Embodiment, In the range which does not deviate from the meaning, it can change suitably.

例えば、本実施形態では、鋼板コンクリート構造Aが原子力施設の屋根スラブなどのスラブを構成するものとしたが、本発明にかかる鋼板コンクリート構造Aは原子力施設のスラブに限らず、原子力施設の他の部材は勿論、あらゆる構造物に適用可能である。   For example, in the present embodiment, the steel plate concrete structure A constitutes a slab such as a roof slab of a nuclear facility, but the steel plate concrete structure A according to the present invention is not limited to a slab of a nuclear facility, but other nuclear facilities. Of course, the members are applicable to any structure.

1 内側主鋼板(一方の主鋼板)
2 外側主鋼板(他方の主鋼板)
3 スタッド
4 コンクリート
5 壁構造体
6 コンクリート打設開口
7 短尺のリブ鋼板
7a 開口
8 せん断補強筋
A 鋼板コンクリート構造
1 Inner main steel sheet (one main steel sheet)
2 Outer main steel plate (the other main steel plate)
3 Stud 4 Concrete 5 Wall structure 6 Concrete placement opening 7 Short rib steel plate 7a Opening 8 Shear reinforcement A Steel plate concrete structure

Claims (1)

一方の主鋼板と、該一方の主鋼板と所定の間隔をあけて配設された他方の主鋼板との間にコンクリートを充填してなる鋼板コンクリート構造において、
前記一方の主鋼板と、前記他方の主鋼板にそれぞれ、開口が貫通形成されたリブ鋼板を一体に接続して設け、
且つ、前記開口に挿通しつつ、前記一方の主鋼板に接続した一方のリブ鋼板と、前記他方の主鋼板に接続した他方のリブ鋼板とにそれぞれ一端部側と他端部側を接続してせん断補強筋を設けて構成されていることを特徴とする鋼板コンクリート構造。
In the steel plate concrete structure formed by filling concrete between one main steel plate and the other main steel plate disposed at a predetermined interval from the one main steel plate,
The one main steel plate and the other main steel plate are each provided integrally with a rib steel plate in which an opening is formed,
And one end side and the other end side are respectively connected to one rib steel plate connected to the one main steel plate and the other rib steel plate connected to the other main steel plate while being inserted through the opening. A steel plate concrete structure characterized by being provided with shear reinforcement bars.
JP2015091881A 2015-04-28 2015-04-28 Steel plate concrete structure Pending JP2016205101A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109811899A (en) * 2019-03-22 2019-05-28 哈尔滨工业大学 It is a kind of for double steel plate-concrete adjustable structure connection component

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