JPH116125A - Concrete structure - Google Patents
Concrete structureInfo
- Publication number
- JPH116125A JPH116125A JP9162650A JP16265097A JPH116125A JP H116125 A JPH116125 A JP H116125A JP 9162650 A JP9162650 A JP 9162650A JP 16265097 A JP16265097 A JP 16265097A JP H116125 A JPH116125 A JP H116125A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- concrete structure
- main
- concrete
- caisson
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Revetment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は護岸ケーソン等に適
用されるコンクリート構造物に関し、特に鋼板コンクリ
ート構造と鉄筋コンクリート構造との接合構造体に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete structure applied to a seawall caisson or the like, and more particularly to a joint structure between a steel plate concrete structure and a reinforced concrete structure.
【０００２】[0002]
【従来の技術】図７には埋め立て地における護岸用ケー
ソンの１例が示されている。図７において、７は陸地、
５０は海水、１はケーソンである。上記護岸用ケーソン
は、海底５１に捨て石マウンド４を構築し、その上にケ
ーソン１を沈設し、同ケーソン１の側壁部２の間に中詰
め砂６を投入することによって設置される。そして上記
ケーソン１を設置した後、後方の陸地７は埋め戻され、
ケーソン１の上面と滑らかに連続した面となり、またこ
の面は海水面５の最高水位よりも一定量上方に位置せし
められる。2. Description of the Related Art FIG. 7 shows an example of a revetment caisson in a landfill. In FIG. 7, 7 is land,
50 is seawater and 1 is a caisson. The revetment caisson is installed by constructing a waste stone mound 4 on the sea floor 51, laying the caisson 1 on the mound 4, and charging the sand 6 between the side walls 2 of the caisson 1. And after installing the caisson 1, the land 7 in the rear is backfilled,
The surface is smoothly continuous with the upper surface of the caisson 1, and this surface is positioned a fixed amount above the highest water level of the sea surface 5.
【０００３】上記ケーソン１は、図７に示されるよう
に、海底５１上に着座する底板部３と同底板部３から複
数個立設された側壁部２とにより構成される。そして、
上記ケーソンは、従来は全体、つまり底板部３及び側壁
部２が鉄筋コンクリート構造、あるいは鋼板コンクリー
ト構造にて構成されていた。As shown in FIG. 7, the caisson 1 is composed of a bottom plate 3 seated on the seabed 51 and a plurality of side walls 2 erected from the bottom plate 3. And
Conventionally, the above caisson, that is, the bottom plate portion 3 and the side wall portion 2 are formed of a reinforced concrete structure or a steel plate concrete structure.
【０００４】図８には、鉄筋コンクリート構造からなる
ケーソンの側壁部の縦断面図が示され、また図９には鋼
板コンクリート構造からなるケーソンの側壁部の縦断面
図が示されている。図８に示される鉄筋コンクリート構
造の側壁部２において、１０はコンクリートであり、同
コンクリート１０の内部の，外面１０ａ、内面１０ｂ寄
りの部位に鉛直方向の補強材としての主筋８が２列（複
数列であれば可）延設され、各主筋８に接して鉛直方向
に一定ピッチを存して水平方向の補強材としての配力筋
９が配置されている。FIG. 8 is a longitudinal sectional view of a side wall of a caisson having a reinforced concrete structure, and FIG. 9 is a longitudinal sectional view of a side wall of a caisson having a steel plate concrete structure. In the side wall portion 2 of the reinforced concrete structure shown in FIG. 8, reference numeral 10 denotes concrete, and two rows (a plurality of rows) of main reinforcements 8 as vertical reinforcing members are provided in the interior of the concrete 10 near the outer surface 10 a and the inner surface 10 b. It is possible to extend), and a distribution muscle 9 as a reinforcing material in the horizontal direction is arranged in contact with each main reinforcement 8 at a constant pitch in the vertical direction.
【０００５】また、図９に示される鋼板コンクリート構
造の側壁部２は、片側鋼板・片側鉄筋コンクリート構造
であり、図９において、コンクリート１０の内面側、つ
まり陸地７側には鋼板１１を鉛直方向に配し、同鋼板１
１の表面にはコンクリート１０と一体化するため一定ピ
ッチで以って複数のスタッド１２をコンクリート１０の
内部に向けて立設している。また、外面側つまり海水５
０側は防食面からコンクリート１０の外面１０ａとし、
その内部に上記鉄筋コンクリート構造の場合と同様に、
鉛直方向に延びる主筋８及び水平方向に一定ピッチで延
設された配力筋９が配されている。The side wall portion 2 of the steel plate concrete structure shown in FIG. 9 is a one-sided steel plate / one-sided reinforced concrete structure. In FIG. The same steel plate 1
A plurality of studs 12 are erected at a constant pitch on the surface of the concrete 10 so as to be integrated with the concrete 10. Also, the outer surface, that is, seawater 5
The 0 side is the outer surface 10a of the concrete 10 from the anticorrosion surface,
Inside, like the above reinforced concrete structure,
A main bar 8 extending in the vertical direction and a distribution bar 9 extending at a constant pitch in the horizontal direction are arranged.
【０００６】[0006]
【発明が解決しようとする課題】図８に示されるような
鉄筋コンクリート構造のケーソンは、土木分野では最も
普遍的な構造であるため工事が容易で構築コストが低
く、また重量を大きくできるので滑動や転倒に対する安
定性に優れているという利点を有する。The caisson of the reinforced concrete structure as shown in FIG. 8 is the most universal structure in the civil engineering field, so that the construction is easy and the construction cost is low. It has the advantage of being excellent in stability against falling.
【０００７】また、図９に示される鋼板コンクリート構
造のケーソンは図８に示される鉄筋コンクリート構造の
ものに較べて高い強度を有するため軽量化が可能とな
り、軟弱な地盤への設置が可能であるという利点を有す
る。Further, the caisson of the steel plate concrete structure shown in FIG. 9 has higher strength than that of the reinforced concrete structure shown in FIG. 8, so that it can be reduced in weight and can be installed on soft ground. Has advantages.
【０００８】しかしながら上記鉄筋コンクリート構造部
のケーソンは、鋼板コンクリート構造部に較べて強度が
低いため、所要の強度を得るには主筋８、配力筋９等の
鉄筋を大径にするとともに外形形状も大きくする必要が
あり、特に底板部３が大形、大重量となり軟弱地盤への
設置が困難となるという問題点がある。However, the strength of the caisson of the reinforced concrete structure is lower than that of the steel plate concrete structure. Therefore, in order to obtain the required strength, the reinforcing bars such as the main reinforcing bars 8 and the distributing bars 9 need to have a large diameter and an outer shape. It is necessary to increase the size, and there is a problem that the bottom plate portion 3 is particularly large and heavy, so that it is difficult to install it on soft ground.
【０００９】一方、上記鋼板コンクリート構造のケーソ
ンは、鉄筋コンクリート構造に較べて構造が複雑で高コ
ストとなることから、格別な高強度を必要としない側壁
部３にこれを用いると、いわゆるオーバースペックとな
り、ケーソンが高コストとなる。On the other hand, since the caisson of the steel plate concrete structure has a complicated structure and a high cost as compared with the reinforced concrete structure, if it is used for the side wall portion 3 which does not require exceptionally high strength, it becomes a so-called over specification. , The caisson is expensive.
【００１０】本発明の目的は、鉄筋コンクリート構造及
び鋼板コンクリート構造の利点を併せ持ち、構造が複雑
化することなく、かつコストの上昇を伴なうことなく高
強度かつ軽量で設置後の安定性が高いケーソンを提供す
ることにある。It is an object of the present invention to combine the advantages of a reinforced concrete structure and a steel plate concrete structure, and to have high strength and light weight and high stability after installation without complicating the structure and without increasing the cost. To provide caisson.
【００１１】[0011]
【課題を解決するための手段】本発明は上記問題点を解
決するもので、その要旨とする手段は、コンクリートの
内部に補強材としての主筋を鉛直方向に貫通させて設け
てなる鉄筋コンクリート構造部と、コンクリートの両面
あるいは片面に補強用の鋼板を貼設してなる鋼板コンク
リート構造部とを備えたコンクリート構造物において、
上記鉄筋コンクリート構造部の下部と鋼板コンクリート
構造部の上部とを接続する接続部を設け、同接続部はそ
の内部に上記鉄筋コンクリート構造部から延設された主
筋が鉛直方向に貫通されるとともに、片面に上記鋼板コ
ンクリート構造部の鋼板の一部が延設され、上記鋼板と
主筋との間を拘束鉄筋により結合されてなることを特徴
とするコンクリート構造物にある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a gist of the invention is to provide a reinforced concrete structure having a main reinforcing bar as a reinforcing material penetrating vertically inside concrete. And a concrete structure having a steel plate concrete structure in which a steel plate for reinforcement is attached to both sides or one side of concrete,
A connecting portion is provided for connecting the lower portion of the reinforced concrete structure portion and the upper portion of the steel plate concrete structure portion, and the connecting portion is vertically penetrated by a main reinforcing bar extending from the reinforced concrete structure portion, and is provided on one side. A concrete structure characterized in that a part of the steel plate of the steel plate concrete structure part is extended and the steel plate and a main reinforcing bar are connected by a restraining reinforcing bar.
【００１２】上記手段によれば、接続部に設けられた拘
束鉄筋は鋼板とコンクリートとの間のずれ止めとして機
能するとともに、接続部に加わる曲げモーメントにより
鋼板が面外へ剥がれようとする力に対して抵抗力を発生
せしめ、鋼板を主筋に確実に固定せしめる。これによ
り、同接続部によって上記両構造物が強度低下なく強固
に結合され、下部（底板部）の鋼板コンクリート構造部
と上部（側壁部）の鉄筋コンクリート構造部１３とが接
続部を介して一体挙動可能となる。According to the above means, the restraining rebar provided at the connection portion functions as a stopper between the steel plate and the concrete, and at the same time, the bending moment applied to the connection portion reduces the force of the steel plate to peel off the surface. A steel sheet is firmly fixed to the main bar. As a result, the two structural members are firmly connected to each other by the connecting portion without lowering the strength, and the lower (bottom plate portion) steel plate concrete structure portion and the upper (side wall portion) reinforced concrete structure portion 13 behave integrally via the connecting portion. It becomes possible.
【００１３】従って上記手段によれば、鉄筋コンクリー
ト構造部と鋼板コンクリート構造部とを拘束鉄筋を有す
る接続部によって、強度低下なく強固に、かつ簡単な構
造で以って結合することができる。Therefore, according to the above-mentioned means, the reinforced concrete structure and the steel plate concrete structure can be firmly connected with a simple structure without a decrease in strength by the connecting portion having the constrained reinforcing bars.
【００１４】また、本発明は、上記手段をさらに具体化
した手段として次の３つの手段を含む。The present invention includes the following three means as further embodied means of the above means.
【００１５】（１） 上記拘束鉄筋は、コの字状に形成
され、上記主筋及びコンクリートを拘束して根本部を上
記鋼板に溶接されてなる。従って、上記手段によれば、
主筋とコンクリートとを拘束鉄筋によって同時に拘束
し、鋼板に固定することができ、鋼板のコンクリートへ
の確実な定着が可能となる。(1) The constraining rebar is formed in a U-shape, and has a root portion welded to the steel plate while constraining the main rebar and concrete. Therefore, according to the above means,
The main reinforcing bar and the concrete can be simultaneously restrained by the restraining rebar and fixed to the steel plate, and the steel plate can be reliably fixed to the concrete.
【００１６】（２） 上記拘束鉄筋は、長さの異なる２
種類の拘束鉄筋からなり、各拘束鉄筋が、コンクリート
内に鉛直方向に延設された２列の主筋の夫々を２本づつ
拘束し、根本部を上記鋼板にすみ肉溶接にて固定されて
なる。(2) The restraining rebars have different lengths.
Consisting of various types of restraining bars, each restraining bar restrains each of two rows of main bars extending vertically in concrete, two at a time, and the root is fixed to the steel plate by fillet welding. .
【００１７】従って、上記手段によれば、長さの異なる
２種類の拘束鉄筋により外面側の主筋及び鋼板側の主筋
を夫々拘束し、鋼板に固定しているので、同鋼板による
２列の主筋の拘束効果がより高くなる。また拘束鉄筋を
すみ肉溶接によって鋼板に固定するので、溶接作業が容
易であり、製作コストが低減される。Therefore, according to the above-described means, the main reinforcing bar on the outer surface side and the main reinforcing bar on the steel plate side are respectively restrained by the two types of restricting reinforcing bars having different lengths, and are fixed to the steel plate. The binding effect is higher. Further, since the constraining reinforcing bar is fixed to the steel plate by fillet welding, the welding operation is easy and the manufacturing cost is reduced.
【００１８】（３） 上記拘束鉄筋は、上記主筋を１本
づつ拘束し、根本部をスタッド溶接にて上記鋼板に固定
してなる。かかる手段によれば、拘束鉄筋の鋼板への固
定点が１点のみであるので、拘束鉄筋をスタッド溶接に
よって鋼板に取り付けることが可能となり、拘束鉄筋の
取り付け作業が容易となって作業能率が向上する。(3) The constraining reinforcing bars are formed by restraining the main reinforcing bars one by one and fixing a root portion to the steel plate by stud welding. According to this means, since the fixing bar is fixed to the steel plate at only one point, it is possible to attach the reinforcing bar to the steel plate by stud welding, thereby facilitating the work of attaching the reinforcing bar and improving work efficiency. I do.
【００１９】[0019]
【発明の実施の形態】以下図１〜図６を参照して本発明
の実施形態につき詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS.
【００２０】図６は本発明の実施形態に係るケーソンの
構成図、図１は図６における鉄筋コンクリート構造部と
鋼板コンクリート構造部との接続部近傍を示す縦断面
図、図２は図１のＡ−Ａ線断面図である。図６におい
て、１４は底板部を構成する鋼板コンクリート構造部、
１３は側壁部を構成する鉄筋コンクリート構造部、１５
は上記両構造部を接続する接続部である。FIG. 6 is a structural view of a caisson according to an embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing the vicinity of a connection between a reinforced concrete structure and a steel plate concrete structure in FIG. 6, and FIG. FIG. 4 is a cross-sectional view taken along a line A. In FIG. 6, reference numeral 14 denotes a steel plate concrete structure constituting a bottom plate,
13 is a reinforced concrete structure constituting the side wall, 15
Is a connecting part for connecting the two structural parts.
【００２１】上記接続部１５の近傍を示す図１、及びこ
れのＡ−Ａ線断面図を示す図２において、１０はコンク
リートであり、同コンクリート１０の内部の外面１０ａ
寄りの部位には補強材としての主筋８が鉛直方向に、上
記鉄筋コンクリート構造部１３から接続部１５を経て鋼
板コンクリート構造部１４へと貫通して設けられてい
る。また上記コンクリート１０の内面１０ｂ寄りの部位
には他方の主筋８ｂが上記鉄筋コンクリート構造部１３
から接続部１５の下部まで鉛直方向に貫通して設けられ
ている。In FIG. 1 showing the vicinity of the connecting portion 15 and FIG. 2 showing a sectional view taken along the line AA of FIG. 1, reference numeral 10 denotes concrete, and an outer surface 10a inside the concrete 10.
A main bar 8 as a reinforcing material is provided in a portion closer to the steel plate concrete structure 14 in the vertical direction from the reinforced concrete structure 13 through the connecting portion 15 to the steel plate concrete structure 14. The other main reinforcing bar 8b is provided at a portion near the inner surface 10b of the concrete 10 so that the reinforced concrete structure 13
To a lower portion of the connection portion 15 in the vertical direction.
【００２２】そして、上記コンクリート１０の内面１０
ａ側には、鋼板１１が上記接続部１５の上部から鋼板コ
ンクリート構造部１４まで鉛直方向に貫通して設けられ
ている。８は水平方向の補強材として配力筋、１２は鋼
板１１に立設されたスタッドである。従って、上記接続
部１５においては、外面側の主筋８が鉛直方向に貫通さ
れるとともに、上記鉄筋コンクリート構造部１３の内面
１０ｂ側の主筋８ｂの下部と鋼板コンクリート構造部１
４の上部とがラップして設けられ、上記両構造部１３及
び１４を強度の低下なく接続している。The inner surface 10 of the concrete 10
On the side a, a steel plate 11 is provided vertically penetrating from the upper portion of the connection portion 15 to the steel plate concrete structure portion 14. Reference numeral 8 denotes a distribution bar as a reinforcing material in the horizontal direction, and 12 denotes a stud erected on the steel plate 11. Therefore, in the connection portion 15, the outer main bar 8 is vertically penetrated, and the lower part of the main bar 8 b on the inner surface 10 b side of the reinforced concrete structure 13 is connected to the steel plate concrete structure 1.
The upper part 4 is provided so as to overlap, and connects the two structural parts 13 and 14 without lowering the strength.
【００２３】そして上記接続部１５においては、さらに
次のようにして補強を加えている。１６は拘束鉄筋であ
り、上記接続部１５に長手方向（鉛直方向）に一定ピッ
チを存して複数個設けられている。上記拘束鉄筋１６
は、図２に示されるようにコの字状に形成され、根本部
を上記鋼板１１に溶接され（２１が溶接部）、先端部が
上記外面側の主筋８を２本（３本以上でもよい）囲み、
拘束し、上記主筋８を補強している。The connecting portion 15 is further reinforced as follows. Reference numeral 16 denotes a restraining reinforcing bar, and a plurality of the reinforcing bars are provided on the connecting portion 15 at a constant pitch in the longitudinal direction (vertical direction). Restricted reinforcing bar 16
As shown in FIG. 2, is formed in a U-shape, the root portion is welded to the steel plate 11 (21 is a welded portion), and the tip portion has two main reinforcing bars 8 on the outer surface side (even three or more). Good) box,
The main bars 8 are restrained and reinforced.
【００２４】上記ケーソン１は、上記のように構成され
た複数の接続部１５を、底板部を構成する鋼板コンクリ
ート構造部１４と複数の側壁部を構成する鉄筋コンクリ
ート構造部１３との間に介設して構成される。The caisson 1 has a plurality of connecting portions 15 configured as described above interposed between a steel plate concrete structure portion 14 forming a bottom plate portion and a reinforced concrete structure portion 13 forming a plurality of side wall portions. It is composed.
【００２５】上記のように構成されたケーソン１におい
て、接続部１５における上記拘束鉄筋１６は、鋼板コン
クリート構造部１４におけるスタッド１２と同様に、鋼
板１１とコンクリート１０との間のずれ止めとして機能
するとともに、接続部１５に加わる曲げモーメントによ
り鋼板１１が面外（内面１０ｂ側）へ剥がされようとす
る力に対して、抵抗力を発生せしめ、同鋼板１１を上記
主筋８に固定せしめる。In the caisson 1 configured as described above, the restraining reinforcing bar 16 in the connection portion 15 functions as a slip stopper between the steel plate 11 and the concrete 10, similarly to the stud 12 in the steel plate concrete structure 14. At the same time, a resistance force is generated against a force that causes the steel plate 11 to be peeled out of the plane (the inner surface 10 b side) by a bending moment applied to the connection portion 15, and the steel plate 11 is fixed to the main bar 8.
【００２６】これにより、接続部１５によって両構造部
１４及び１３が強度低下なく強固に結合され、底板部の
鋼板コンクリート構造部１４と側壁部の鉄筋コンクリー
ト構造部１３とが接続部１５を介して一体挙動可能とな
る。As a result, the two structural parts 14 and 13 are firmly connected by the connecting part 15 without lowering the strength, and the steel plate concrete structure part 14 of the bottom plate part and the reinforced concrete structural part 13 of the side wall part are integrated via the connecting part 15. Behavior is possible.
【００２７】また上記拘束鉄筋１６が主筋８を２本づつ
拘束するように配設されているので上記主筋８と鋼板１
１とを確実に連結するとともに、上記主筋８の間のコン
クリート１０をも拘束することが可能となる。これによ
って鋼板１１のコンクリート１０への確実な定着が可能
となる。Further, since the restraining reinforcing bars 16 are disposed so as to restrain the main reinforcing bars 8 two by two, the main reinforcing bars 8 and the steel plate 1 are restricted.
1 and the concrete 10 between the main bars 8 can also be restrained. As a result, the steel plate 11 can be reliably fixed to the concrete 10.
【００２８】図３及び図４は本発明の実施の第２形態を
示す図１のＡ−Ａ線断面相当図である。この実施形態に
おいては、コの字状に形成され、長さの異なる拘束鉄筋
１６ｃ，１６ｄを２種類設けている。FIGS. 3 and 4 are cross-sectional views taken along the line AA of FIG. 1 showing a second embodiment of the present invention. In this embodiment, two types of restraining reinforcing bars 16c and 16d formed in a U-shape and having different lengths are provided.
【００２９】即ち図３において、１６ｃ，１６ｄは長さ
の異なるコの字状の拘束鉄筋であり、双方共先端部に互
いに逆方向つまり開き方向に屈曲した曲がり部１６ｚ，
１６ｙが形成されている。上記拘束鉄筋のうち長さの長
い方の拘束鉄筋１６ｃは、その曲がり部１６ｚにて外面
１０ａ側の主筋８の２本づつを拘束し、根本の直線部１
６ｅを鋼板１１にすみ肉溶接している。また長さの短い
方の拘束鉄筋１６ｄは、その曲がり部１６ｙにて鋼板１
１側の主筋８ｂの２本づつを拘束し、根本の直線部１６
ｆを鋼板１１にすみ肉溶接している。２０はこれらのす
み肉溶接部である。That is, in FIG. 3, reference numerals 16c and 16d denote U-shaped restraining rebars having different lengths, and both have bent portions 16z and 16b bent at opposite ends, that is, bent in the opening direction.
16y are formed. Among the above-mentioned restraining rebars, the restraining rebar 16c having a longer length restrains the two main rebars 8 on the outer surface 10a side by the bent portion 16z, and forms the root linear portion 1c.
6e is fillet welded to the steel plate 11. In addition, the restraining reinforcing bar 16d having the shorter length is connected to the steel plate 1 at the bent portion 16y.
The two main bars 8b on one side are restrained by two, and
f is fillet welded to the steel plate 11. Reference numeral 20 denotes these fillet welds.
【００３０】また、図４に示されるものは、上記拘束鉄
筋１６ｃ，１６ｄの曲がり部１６ｚ，１６ｙの曲げ方向
が同一方向である点以外は図３のものと同様である。FIG. 4 is the same as that of FIG. 3 except that the bending directions of the bent portions 16z and 16y of the constraining reinforcing bars 16c and 16d are the same.
【００３１】この実施形態においては、長さの異なる２
種類の拘束鉄筋１６ｃ，１６ｄにより外面側の主筋８及
び鋼板側の主筋８ｂを夫々拘束し、鋼板１１に固定して
いるので上記第１形態よりも鋼板１１による主筋８，８
ｂの拘束効果が高くなる。また、各拘束鉄筋１６ｃ，１
６ｄの根本の直線部をすみ肉溶接２０によって鋼板１１
に固定するので、溶接作業が容易であり、製作コストが
低減される。In this embodiment, two different lengths are used.
The main reinforcing bars 8 on the outer surface side and the main reinforcing bars 8b on the steel plate side are respectively restrained and fixed to the steel plate 11 by the kinds of restraining reinforcing bars 16c, 16d.
The restraining effect of b increases. In addition, each restraining rebar 16c, 1
The straight straight portion at the root of 6d is filled with steel plate 11 by fillet welding 20.
, The welding operation is easy and the production cost is reduced.
【００３２】図５は本発明の実施の第３形態を示す図１
のＡ−Ａ線断面相当図である。この実施形態において
は、先端に曲がり部が形成され、根本部が直線状の拘束
鉄筋にて外面側の主筋を１本づつ拘束し、鋼板にスタッ
ド溶接している。FIG. 5 shows a third embodiment of the present invention.
2 is a cross-sectional equivalent view taken along line AA. In this embodiment, a bent portion is formed at the tip, and the main portion on the outer surface side is restrained one by one by a linear restraining reinforcing bar at the root portion, and is stud-welded to a steel plate.
【００３３】即ち図５において、１６ｂは拘束鉄筋であ
り、先端に曲がり部１６ｗが形成され、根本部は直線状
となっている。この拘束鉄筋１６ｂは曲がり部１６ｗに
て外面１０ａ側の主筋８を１本づつ拘束し、直線状の根
本部が鋼板１１にスタッド溶接により固定されている。
２２はスタッド溶接部である。That is, in FIG. 5, reference numeral 16b denotes a constraining rebar, a bent portion 16w is formed at the tip, and the root portion is straight. The constraining reinforcing bars 16b restrain the main bars 8 on the outer surface 10a one by one at a bent portion 16w, and a linear base portion is fixed to the steel plate 11 by stud welding.
22 is a stud welding part.
【００３４】この実施形態においては、拘束鉄筋１６ｂ
の鋼板１１への固定点が１点のみであるので、拘束鉄筋
１６ｂをスタッド溶接２２によって鋼板１１に取り付け
ることが可能となり、拘束鉄筋１６ｂの取り付け作業が
容易となって作業能率が向上する。In this embodiment, the restraining rebar 16b
Is fixed to the steel plate 11 at only one point, so that the constraining reinforcing bar 16b can be attached to the steel plate 11 by stud welding 22, so that the work of attaching the constraining reinforcing bar 16b is facilitated and the working efficiency is improved.
【００３５】[0035]
【発明の効果】本発明は以上のように構成されており、
本発明によれば鉄筋コンクリート構造部と鋼板コンクリ
ート構造部とを、主筋及びコンクリートを拘束して確実
に鋼板に固定し得る拘束鉄筋を有する接続部によって、
強度低下なく強固にかつ簡単な構造で以って結合するこ
とができる。The present invention is configured as described above.
According to the present invention, a reinforced concrete structure portion and a steel plate concrete structure portion, by a connection portion having a constrained rebar capable of restraining the main reinforcement and concrete and securely fixing the steel plate,
The connection can be made firmly and with a simple structure without a decrease in strength.
【００３６】これによって工事が容易で構築コストの低
廉な鉄筋コンクリート構造部にて側壁部を構成し、軽量
で高い強度が得られる鋼板コンクリート構造部にて高強
度を要する底板部を構成してなるケーソンを容易に製作
することができる。従って、構造が複雑化することな
く、かつ設置コストの上昇を伴なうことなく、軽量かつ
高強度で、軟弱な地盤にも容易に設置可能なケーソンを
得ることができる。Thus, the caisson is constructed by forming the side wall portion by the reinforced concrete structure portion which is easy to construct and inexpensive to construct and the bottom plate portion which requires high strength by the steel plate concrete structure portion which is lightweight and has high strength. Can be easily manufactured. Therefore, it is possible to obtain a caisson that is lightweight, has high strength, and can be easily installed on soft ground without complicating the structure and without increasing the installation cost.
【００３７】また請求項２の発明によれば、主筋とコン
クリーとを拘束鉄筋によって同時に拘束し、鋼板に固定
することができ、鋼板のコンクリートへの確実な定着が
可能となる。According to the second aspect of the present invention, the main reinforcing bar and the concrete can be simultaneously restrained by the restraining rebar and fixed to the steel plate, so that the steel plate can be reliably fixed to the concrete.
【００３８】また請求項３の発明によれば、長さの異な
る２種類の拘束鉄筋により外面側の主筋及び鋼板側の主
筋を夫々拘束し、鋼板に固定しているので、同鋼板によ
る２列の主筋の拘束効果がより高くなる。また拘束鉄筋
をすみ肉溶接によって鋼板に固定するので溶接作業が容
易であり、製作コストが低減される。According to the third aspect of the present invention, the main reinforcing bar on the outer surface side and the main reinforcing bar on the steel plate side are respectively restrained by two types of restraining reinforcing bars having different lengths, and are fixed to the steel plate. The effect of restraining the main muscle is higher. In addition, since the constraining reinforcing bar is fixed to the steel plate by fillet welding, the welding operation is easy, and the manufacturing cost is reduced.
【００３９】さらに請求項４の発明によれば、拘束鉄筋
の鋼板への固定点が１点のみであるので、拘束鉄筋をス
タッド溶接によって鋼板に取り付けることが可能とな
り、拘束鉄筋の取り付け作業が容易となって作業能率が
向上する。According to the fourth aspect of the present invention, since the fixed reinforcing bar is fixed to the steel plate at only one point, it is possible to attach the reinforcing bar to the steel plate by stud welding, thereby facilitating the work of mounting the reinforcing bar. As a result, work efficiency is improved.
【図１】本発明の実施の第１形態に係るケーソンの接続
部近傍を示す要部縦断面図。FIG. 1 is a longitudinal sectional view of a main part showing the vicinity of a connection part of a caisson according to a first embodiment of the present invention.
【図２】図１のＡ−Ａ縦断面図。FIG. 2 is a vertical sectional view taken along the line AA of FIG.
【図３】本発明の実施の第２形態の第１例を示す図１の
Ａ−Ａ線断面相当図。FIG. 3 is a sectional view taken along the line AA of FIG. 1, showing a first example of the second embodiment of the present invention.
【図４】上記第２形態の第２例を示す図３応当図。FIG. 4 is a view corresponding to FIG. 3, showing a second example of the second embodiment.
【図５】本発明の実施の第３形態を示す図１のＡ−Ａ線
断面相当図。FIG. 5 is a sectional view taken along the line AA of FIG. 1, showing a third embodiment of the present invention.
【図６】本発明の実施の第１〜第３形態に係るケーソン
の構成図。FIG. 6 is a configuration diagram of a caisson according to first to third embodiments of the present invention.
【図７】護岸用ケーソンの設置状態を示す構成図。FIG. 7 is a configuration diagram showing an installed state of a revetment caisson.
【図８】従来のケーソンにおける鉄筋コンクリート構造
部の縦断面図。FIG. 8 is a longitudinal sectional view of a reinforced concrete structure in a conventional caisson.
【図９】従来のケーソンにおける鋼板コンクリート構造
部の縦断面図。FIG. 9 is a longitudinal sectional view of a steel plate concrete structure in a conventional caisson.
１ ケーソン ２ 側壁部 ３ 底板部 ８，８ｂ 主筋 ９ 配力筋 １０ コンクリート １０ａ 外面 １０ｂ 内面 １１ 鋼板 １２ スタッド １３ 鉄筋コンクリート構造部 １４ 鋼板コンクリート構造部 １５ 接続部 １６，１６ｂ，１６ｃ，１６ｄ 拘束鉄筋 DESCRIPTION OF SYMBOLS 1 Caisson 2 Side wall part 3 Bottom plate part 8, 8b Main bar 9 Distributing bar 10 Concrete 10a Outer surface 10b Inner surface 11 Steel plate 12 Stud 13 Reinforced concrete structure 14 Steel plate concrete structure 15 Connection part 16, 16b, 16c, 16d
フロントページの続き (72)発明者 嶋田 利一 神戸市兵庫区和田崎町一丁目１番１号 三 菱重工業株式会社神戸造船所内Continued on the front page (72) Inventor Toshikazu Shimada 1-1-1 Wadazakicho, Hyogo-ku, Kobe-shi Inside the Kobe Shipyard, Mitsubishi Heavy Industries, Ltd.
Claims (4)
筋を鉛直方向に貫通させて設けてなる鉄筋コンクリート
構造部と、コンクリートの両面あるいは片面に補強用の
鋼板を貼設してなる鋼板コンクリート構造部とを備えた
コンクリート構造物において、上記鉄筋コンクリート構
造部の下部と鋼板コンクリート構造部の上部とを接続す
る接続部を設け、同接続部はその内部に上記鉄筋コンク
リート構造部から延設された主筋が鉛直方向に貫通され
るとともに、片面に上記鋼板コンクリート構造部の鋼板
の一部が延設され、上記鋼板と主筋との間を拘束鉄筋に
より結合されてなることを特徴とするコンクリート構造
物。1. A reinforced concrete structure portion provided with a main reinforcing bar as a reinforcing material vertically penetrating inside concrete, and a steel plate concrete structure portion formed by attaching a reinforcing steel plate to both sides or one side of concrete. In a concrete structure provided with, a connecting portion for connecting a lower portion of the reinforced concrete structure portion and an upper portion of the steel plate concrete structure portion is provided, and the connecting portion has a main reinforcement extending from the reinforced concrete structure portion in a vertical direction. A concrete structure characterized in that a part of the steel plate of the steel plate concrete structure part is extended on one side and the steel plate and a main reinforcing bar are connected by a restraining reinforcing bar.
上記主筋及びコンクリートを拘束してその根本部を上記
鋼板に溶接されてなる請求項１に記載のコンクリート構
造物。2. The restraining reinforcing bar is formed in a U-shape.
The concrete structure according to claim 1, wherein the main reinforcement and the concrete are restrained and a root portion thereof is welded to the steel plate.
拘束鉄筋からなり、各拘束鉄筋が、コンクリート内に鉛
直方向に延設された２列の主筋の夫々を２本づつ拘束
し、根本部を上記鋼板にすみ肉溶接にて固定されてなる
請求項１に記載のコンクリート構造物。3. The constraining rebar is composed of two types of constraining rebars having different lengths, and each constraining reinforces two rows of main rebars extending vertically in concrete, two by two. The concrete structure according to claim 1, wherein a root portion is fixed to the steel plate by fillet welding.
束し、根本部をスタッド溶接にて上記鋼板に固定してな
る請求項１に記載のコンクリート構造物。4. The concrete structure according to claim 1, wherein the constraining reinforcing bars restrain the main reinforcing bars one by one, and fix a root portion to the steel plate by stud welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16265097A JP3426916B2 (en) | 1997-06-19 | 1997-06-19 | Concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16265097A JP3426916B2 (en) | 1997-06-19 | 1997-06-19 | Concrete structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH116125A true JPH116125A (en) | 1999-01-12 |
| JP3426916B2 JP3426916B2 (en) | 2003-07-14 |
Family
ID=15758662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16265097A Expired - Lifetime JP3426916B2 (en) | 1997-06-19 | 1997-06-19 | Concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3426916B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205129A (en) * | 2006-02-06 | 2007-08-16 | Kobe Steel Ltd | Construction method of breakwater structure and breakwater structure |
| KR101011070B1 (en) | 2010-09-14 | 2011-01-25 | 한국수력원자력 주식회사 | Connection method between steel plate concrete structure and different structure |
| KR101426249B1 (en) * | 2012-09-10 | 2014-08-05 | 한국수력원자력 주식회사 | Mechanical connection unit for the rc-sc connection |
| JP2014167254A (en) * | 2014-04-23 | 2014-09-11 | Taisei Corp | Steel plate concrete structure |
| CN104790342A (en) * | 2014-01-20 | 2015-07-22 | 上海勘测设计研究院 | Wave wall structure for tops of dike and dam and construction method thereof |
| CN114457671A (en) * | 2018-08-31 | 2022-05-10 | 中交路桥华南工程有限公司 | Welding part |
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| JPS6346550U (en) * | 1986-09-12 | 1988-03-29 | ||
| JPH0447090B2 (en) * | 1985-11-01 | 1992-08-03 | Taisei Corp | |
| JPH0754428A (en) * | 1993-08-11 | 1995-02-28 | Takenaka Komuten Co Ltd | Method of constructing wall by truss reinforcing bar embedded form |
-
1997
- 1997-06-19 JP JP16265097A patent/JP3426916B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0447090B2 (en) * | 1985-11-01 | 1992-08-03 | Taisei Corp | |
| JPS6346550U (en) * | 1986-09-12 | 1988-03-29 | ||
| JPH0754428A (en) * | 1993-08-11 | 1995-02-28 | Takenaka Komuten Co Ltd | Method of constructing wall by truss reinforcing bar embedded form |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205129A (en) * | 2006-02-06 | 2007-08-16 | Kobe Steel Ltd | Construction method of breakwater structure and breakwater structure |
| KR101011070B1 (en) | 2010-09-14 | 2011-01-25 | 한국수력원자력 주식회사 | Connection method between steel plate concrete structure and different structure |
| WO2012036335A1 (en) * | 2010-09-14 | 2012-03-22 | 한국수력원자력 주식회사 | Connection method between steel-plate concrete structure and different structure |
| KR101426249B1 (en) * | 2012-09-10 | 2014-08-05 | 한국수력원자력 주식회사 | Mechanical connection unit for the rc-sc connection |
| CN104790342A (en) * | 2014-01-20 | 2015-07-22 | 上海勘测设计研究院 | Wave wall structure for tops of dike and dam and construction method thereof |
| JP2014167254A (en) * | 2014-04-23 | 2014-09-11 | Taisei Corp | Steel plate concrete structure |
| CN114457671A (en) * | 2018-08-31 | 2022-05-10 | 中交路桥华南工程有限公司 | Welding part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3426916B2 (en) | 2003-07-14 |
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