JPH0931974A - Reinforcing bar reinforcement structure for reinforced concrete members - Google Patents
Reinforcing bar reinforcement structure for reinforced concrete membersInfo
- Publication number
- JPH0931974A JPH0931974A JP18308395A JP18308395A JPH0931974A JP H0931974 A JPH0931974 A JP H0931974A JP 18308395 A JP18308395 A JP 18308395A JP 18308395 A JP18308395 A JP 18308395A JP H0931974 A JPH0931974 A JP H0931974A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- reinforcing
- reinforced concrete
- concrete
- steel
- 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
- Piles And Underground Anchors (AREA)
- Foundations (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
(57)【要約】
【課題】 鋼板で被覆した鉄筋コンクリート部材につい
て、鉄筋の付着割裂強度を増し、部材全体としての耐力
を向上させる。
【解決手段】 外周を補強鋼板４としての角形鋼管で被
覆して鋼板被覆コンクリート部材１とする。相対する面
の補強鋼板４間を複数枚のスチフナー５で連結する。製
作においては、まず補強鋼板４の内側にスチフナーを溶
接等で接合し、補強鋼板４とスチフナー５で囲まれる内
側に主筋３を配筋した後、コンクリート２を打設し、養
生する。鉄筋コンクリート部分の配筋は主筋３のみと
し、せん断補強のための帯筋は配筋しない。補強鋼板４
は、内面にはずれ止めを有するものが望ましい。
(57) [Abstract] [PROBLEMS] For a reinforced concrete member coated with a steel plate, the bond splitting strength of the reinforcing bar is increased and the yield strength of the entire member is improved. SOLUTION: The steel plate-covered concrete member 1 is obtained by covering the outer periphery with a rectangular steel pipe as a reinforcing steel plate 4. A plurality of stiffeners 5 connect the reinforcing steel plates 4 on the opposite surfaces. In the production, first, a stiffener is joined to the inside of the reinforcing steel plate 4 by welding or the like, the main bar 3 is arranged on the inside surrounded by the reinforcing steel plate 4 and the stiffener 5, and then concrete 2 is placed and cured. The reinforcement of the reinforced concrete part is only the main reinforcement 3, and the reinforcement for shear reinforcement is not. Reinforced steel plate 4
It is desirable that the inner surface has a stopper.
Description
【０００１】[0001]
【発明の属する技術分野】本願発明は、鋼板で被覆した
鉄筋コンクリート部材の鉄筋付着力補強構造に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar adhesion reinforcing structure for a reinforced concrete member coated with a steel plate.
【０００２】[0002]
【発明が解決しようとする課題】出願人等は、先に特願
平６−１６６６７８号において、主として中高層線路上
空利用建築物を対象とした力学性能に優れた鉄骨柱と杭
の接合部を提供することを目的として、鉄骨柱の下部を
杭頭部の鉄筋コンクリート内に埋め込んでなる鉄骨柱と
杭の接合部において、杭の外周全面または外周の一部を
外周補強鋼板で被覆し、鉄骨柱と外周補強鋼板間をスチ
フナー材でつないだ構造を提案している。SUMMARY OF THE INVENTION Applicants previously provided in Japanese Patent Application No. 6-166678 a joint between a steel column and a pile, which is excellent in mechanical performance and is mainly intended for a building using a mid-to-high-rise line. For the purpose of doing so, at the joint between the steel pillar and the pile, in which the lower part of the steel pillar is embedded in the reinforced concrete of the pile head, the entire outer circumference of the pile or a part of the outer circumference is covered with an outer peripheral reinforcing steel plate, and We propose a structure in which stiffeners are used to connect the outer peripheral reinforcing steel plates.
【０００３】その場合、外周補強鋼板により杭のコンク
リートを外側から拘束するとともに、鉄骨柱から複合杭
に伝達する曲げモーメントの一部を負担し、さらにパン
チングシヤー等が問題となるはしあき距離が短い部分に
ついて、鉄骨柱と外周補強鋼板間をスチフナー材でつな
ぐことで破壊耐力を増大させている。In this case, the concrete of the pile is restrained from the outside by the outer peripheral reinforcing steel plate, a part of the bending moment transmitted from the steel column to the composite pile is borne, and the punching shear or the like becomes a problem. The fracture strength of the short part is increased by connecting the steel column and the outer peripheral reinforcing steel plate with a stiffener material.
【０００４】しかし、その場合もコンクリート部分の主
筋の付着割裂破壊（主筋に対しコンクリートが剥離す
る）によって接合部が破壊する傾向があり、これに対し
外周を被覆する鋼板はその面外方向の曲げ剛性で抵抗す
るが、鋼板の幅厚比Ｂ／ｔ（図４参照）が大きい場合、
低荷重域で主筋のコンクリート付着割裂破壊が生じる。However, in that case as well, the joint tends to break due to the adhesive splitting fracture of the main bar of the concrete portion (concrete peels off from the main bar), whereas the steel sheet covering the outer circumference bends in the out-of-plane direction. It resists with rigidity, but when the width / thickness ratio B / t of the steel sheet (see FIG. 4) is large,
In the low load range, the fracture of the bond of concrete in the main bar occurs.
【０００５】したがって、接合部の保有耐力設計を達成
するためには付着割裂強度を増加させる必要がある。Therefore, it is necessary to increase the bond splitting strength in order to achieve the holding strength design of the joint.
【０００６】また、例えば、森下他；「鋼管で被覆補強
されたコンクリートと異形鉄筋の間の付着性状」、コン
クリート工学年次論文報告集９−２、１９８７年（以
下、文献１という）には、鉄筋コンクリート短柱を鋼管
で被覆補強した場合の鋼管補強短柱の復元力特性につい
て、コンクリートと異形鉄筋との付着性状が検討されて
おり、そこにはコンクリート断面外周を角形鋼管で被覆
補強した鉄筋付着試験から、角形鋼管で被覆補強してい
ない（すなわち鉄筋コンクリート断面のみの）場合に比
べ、鉄筋の付着割裂傷強度が高くなることが報告されて
いる。[0006] For example, Morishita et al., "Adhesive Properties between Concrete Reinforced with Steel Pipe and Deformed Bars", Annual Report of Concrete Engineering 9-2, 1987 (hereinafter referred to as Document 1) Regarding the restoring force characteristics of steel pipe reinforced short columns when reinforced concrete short columns are covered and reinforced with steel pipes, the adhesive properties between concrete and deformed reinforcing bars have been studied. From the adhesion test, it has been reported that the adhesion splitting crack strength of the reinforcing bar is higher than that in the case where the covering is not reinforced by the square steel pipe (that is, only the reinforced concrete cross section).
【０００７】鉄筋コンクリート断面部分については、材
軸方向の主筋と主筋の周りを取り巻くせん断補強筋とし
ての帯筋を配筋するのが普通であるが、外周を鋼板で補
強し、せん断補強を省略した鉄筋コンクリート部材は、
上述のように鋼板の幅厚比Ｂ／ｔが大きい場合、主筋の
コンクリート付着割裂破壊が生じやすい。Regarding the reinforced concrete cross section, it is usual to arrange a main bar in the axial direction of the material and a band reinforcement as a shear reinforcing bar surrounding the main bar, but the outer periphery is reinforced with a steel plate and the shear reinforcement is omitted. The reinforced concrete member is
As described above, when the width-thickness ratio B / t of the steel sheet is large, concrete adherent split fracture of the main bar is likely to occur.
【０００８】本願発明は、上述のような背景のもとに、
鋼板で被覆した鉄筋コンクリート部材について、鉄筋の
付着割裂強度を増すことで、部材全体としての耐力の向
上を図ったものである。The present invention is based on the above background.
With respect to a reinforced concrete member coated with a steel plate, the bond splitting strength of the reinforcing bar is increased to improve the yield strength of the entire member.
【０００９】[0009]
【課題を解決するための手段】本願発明の鉄筋コンクリ
ート部材の鉄筋付着力補強構造は、鉄筋コンクリート部
材の外周の全面または一部を鋼板で被覆し、相対する面
の鋼板間をコンクリート断面内に配したスチフナーで連
結してあることを特徴とするものである。[Means for Solving the Problems] In the reinforcing structure for reinforcing the reinforcing bar of a reinforced concrete member according to the present invention, the whole or a part of the outer periphery of the reinforced concrete member is covered with steel plates, and the steel plates on the opposite surfaces are arranged in the concrete cross section. It is characterized by being connected by a stiffener.
【００１０】主な用途としては、前述した特願平６−１
６６６７８号の場合と同様の既存の鉄道線路敷の上空に
跨る中高層線路上空利用建築物、河川、道路の上空に跨
る建築物における鉄骨柱と鋼板で被覆補強した鉄筋コン
クリート杭の接合部があるが、これらに限定されず、広
く土木、建築構造物における鋼板被覆鉄筋コンクリート
部材に適用可能である。[0010] The main use is as described above in Japanese Patent Application No. 6-1.
Similar to the case of 66678, there is a joint between steel-framed pillars and steel-reinforced concrete piles covered and reinforced with steel plates in buildings over the middle and high-rise tracks over the sky above existing railway tracks, rivers, and buildings over the road. The invention is not limited to these, and can be widely applied to steel plate-covered reinforced concrete members in civil engineering and building structures.
【００１１】主筋の付着割裂破壊は、主筋に対しコンク
リートが剥離することにより生じるが、本願発明では、
鉄筋コンクリート部材の外周を被覆する鋼板がその面外
方向の曲げ剛性で抵抗し、相対する面の鋼板間を連結す
るスチフナーが鋼板の曲げ剛性を高め、付着割裂破壊を
抑制している。The bond splitting failure of the main bar occurs when the concrete separates from the main bar, but in the present invention,
The steel plate that covers the outer periphery of the reinforced concrete member resists the bending rigidity in the out-of-plane direction, and the stiffener that connects the steel plates on the opposite surfaces enhances the bending rigidity of the steel plate, and suppresses adhesive split fracture.
【００１２】スチフナーとしては、通常、鋼板が用いら
れるが、その他、溝形鋼や山形鋼等の形鋼あるいはラチ
ス材等でもよい。スチフナーの配置については、鉄筋コ
ンクリート部材の全長にわたって設ける場合と、一部の
区間にのみ設ける場合とが考えられる。As the stiffener, a steel plate is usually used, but a shaped steel such as a channel steel or a chevron steel or a lattice material may also be used. The stiffener may be arranged over the entire length of the reinforced concrete member or may be arranged only in a part of the section.
【００１３】請求項２は、鉄筋コンクリート部材につい
て、主筋を取り巻くせん断補強のための帯筋を省略する
場合を限定したものである。A second aspect of the present invention is limited to the case of omitting the band reinforcement for shear reinforcement surrounding the main reinforcement in the reinforced concrete member.
【００１４】本願発明の補強構造の特徴として、上述の
ように主筋の付着割裂破壊が、外周を被覆する鋼板およ
び相対する面の鋼板間を連結するスチフナーによって抑
制されており、面倒な配筋作業を必要とする帯筋の省略
が可能である。As a feature of the reinforcing structure of the present invention, as described above, the bond splitting fracture of the main bar is suppressed by the steel plate covering the outer periphery and the stiffener connecting between the steel plates on the opposite faces, which is a troublesome arranging work. It is possible to omit the stirrups that require.
【００１５】請求項３は、外周を被覆補強する鋼板につ
いて、内面にはコンクリートとのずれ止め（すべり止
め）を設けてある場合を限定したものである。ずれ止め
としては内面に突起を有する突起付き鋼板（圧延成形に
よる縞鋼板等）を用いたり、スタッドジベル等のシヤコ
ネクターを溶植する等して、コンクリートとの一体化を
図ることができる。A third aspect of the present invention is limited to the case where the steel plate for covering and reinforcing the outer circumference is provided with an inner surface provided with a slip stopper for preventing slippage with concrete. As the slip-off prevention, a steel plate with a projection having a projection on its inner surface (a striped steel plate by rolling forming, etc.) may be used, or a shear connector such as a stud dowel may be welded to achieve integration with the concrete.
【００１６】[0016]
【発明の実施の形態】図１〜図３は、それぞれ本願発明
の補強構造の一実施形態を示したものである。1 to 3 show an embodiment of a reinforcing structure according to the present invention.
【００１７】図１は、コンクリート２の外周を補強鋼板
４で被覆した外鋼板被覆コンクリート部材１が偏平な断
面形状を有する場合であり、部材断面の弱軸方向に相対
する補強鋼板４間を鋼板からなる２枚のスチフナー５で
連結している。FIG. 1 shows a case where an outer steel plate-covered concrete member 1 in which the outer periphery of concrete 2 is covered with a reinforcing steel plate 4 has a flat cross-sectional shape, and a steel plate is provided between the reinforcing steel plates 4 facing in the weak axis direction of the member cross section. It is connected by two stiffeners 5 consisting of.
【００１８】外周補強鋼板４としては、偏平な断面形状
を有する角形鋼管等を用いることができ、内面にずれ止
めを有するものが望ましい。As the outer peripheral reinforcing steel plate 4, a square steel pipe or the like having a flat cross-sectional shape can be used, and it is desirable that the inner surface has a slip stopper.
【００１９】このような外鋼板被覆コンクリート部材１
は、例えば外周補強鋼板４としての角形鋼管の内面にス
チフナー５を溶接し、補強鋼板４とスチフナー５で囲ま
れる内側に主筋３を配筋した後、コンクリート２を打設
し、養生するといった工程で製造される。Such an outer steel plate-covered concrete member 1
Is, for example, a step of welding a stiffener 5 to the inner surface of a rectangular steel pipe as the outer peripheral reinforcing steel plate 4, arranging the main bar 3 inside the reinforcing steel plate 4 and the stiffener 5, and then placing concrete 2 for curing. Manufactured in.
【００２０】また、角形鋼管の内面へのスチフナー５の
溶接が難しい場合は、平板状の補強鋼板４とスチフナー
５を、順次、溶接等で組み立てていってもよい。When it is difficult to weld the stiffener 5 to the inner surface of the rectangular steel pipe, the plate-shaped reinforcing steel plate 4 and the stiffener 5 may be sequentially assembled by welding or the like.
【００２１】図示した例では鉄筋コンクリート部分の帯
筋を省略している（配筋していない）が、スチフナー５
の存在により帯筋以上の付着割裂破壊抑制効果が得られ
る。また、鉄筋については、主筋３のみの配筋であるた
め、配筋作業が大幅に簡略化される。In the example shown in the figure, the stirrup of the reinforced concrete part is omitted (no reinforcement), but the stiffener 5
By the presence of, the effect of suppressing the adhesive splitting fracture above the stirrups is obtained. Further, as for the reinforcing bar, since only the main bars 3 are arranged, the work of reinforcing the bar is greatly simplified.
【００２２】図２は、図１の例に対し、スチフナー５の
枚数を３枚に増やし、主筋３の本数を減らした場合であ
る。FIG. 2 shows a case in which the number of stiffeners 5 is increased to 3 and the number of main bars 3 is reduced as compared with the example of FIG.
【００２３】図３は、外鋼板被覆コンクリート部材１の
断面形状が正方形の場合であり、スチフナー５を直交す
る２方向に取り付け、外周補強鋼板４とスチフナー５で
囲まれる部分に主筋３を配筋し、コンクリート２を打設
した場合である。FIG. 3 shows a case where the cross-sectional shape of the outer steel plate-covered concrete member 1 is square, the stiffeners 5 are attached in two directions orthogonal to each other, and the main reinforcements 3 are arranged in the portion surrounded by the outer peripheral reinforcing steel plate 4 and the stiffeners 5. However, this is the case when concrete 2 is placed.
【００２４】図４は、本願発明の原理を示したもので、
本願発明における鉄筋付着力補強構造は、割裂力に対
し、外周を被覆している鋼板４の曲げ剛性（Ｅ・Ｉ）
（ここで、Ｅはヤング係数、Ｉは断面２次モーメント）
で抵抗し、鋼板４の曲げ変形量（δv ）を抑制すること
によって、付着力を高めることができる。FIG. 4 shows the principle of the present invention.
The reinforcing strength of the reinforcing bar in the present invention is the bending rigidity (E · I) of the steel plate 4 covering the outer periphery against the splitting force.
(Where E is Young's modulus and I is the second moment of area)
It is possible to increase the adhesive force by suppressing the bending deformation amount (δ v ) of the steel plate 4 by suppressing the bending resistance.
【００２５】また、鋼板４の曲げ変形量（δv ）は、外
周を被覆している鋼板４の幅厚比（Ｂ／ｔ）に依存する
ため、幅厚比（Ｂ／ｔ）を小さくする（割裂力ｓに対す
る拘束力を増す）と付着割裂強度は増す結果となる。Since the bending deformation amount (δ v ) of the steel plate 4 depends on the width-thickness ratio (B / t) of the steel plate 4 covering the outer circumference, the width-thickness ratio (B / t) is reduced. (Increasing the restraining force against the splitting force s) results in increasing the adhesive splitting strength.
【００２６】以上から、幅厚比（Ｂ／ｔ）を小さくする
手段として、例えば図１〜図３のような形で、スチフナ
ー５を外周を被覆している鋼板４に取り付けることで、
実質的に幅厚比（Ｂ／ｔ）を小さくすることができ、付
着力を補強することができる。From the above, as a means for reducing the width-thickness ratio (B / t), the stiffener 5 is attached to the steel plate 4 covering the outer periphery in the form as shown in FIGS.
The width-thickness ratio (B / t) can be substantially reduced, and the adhesive force can be reinforced.
【００２７】図５は、１柱１杭基礎構造に適用した場合
の先願である特願平６−１６６６７８号の構造（ケース
１）と本願発明の補強構造（ケース２）の付着試験に用
いた供試体１０（縮小模型）の説明図であり、(a) は右
半分がケース１の鉛直断面、左半分がケース２の側面、
(b) は右半分がケース１の鉛直断面、左半分がケース２
の正面、(c) はケース１の鉄骨柱１８と杭１１の接合部
の水平断面、(d) はケース２の鉄骨柱１８と杭１１の接
合部の水平断面を示している。FIG. 5 is used for the adhesion test of the structure of the prior application (Japanese Patent Application No. 6-166678) (case 1) and the reinforcing structure (case 2) of the present invention when applied to the one-column one-pile foundation structure. It is an explanatory view of the specimen 10 (reduced model) that was, the right half is a vertical cross section of the case 1, the left half is the side surface of the case 2,
In (b), the right half is a vertical cross section of case 1, the left half is case 2
2C shows a horizontal cross section of the joint between the steel column 18 and the pile 11 of the case 1, and (d) shows a horizontal cross section of the joint between the steel column 18 and the pile 11 of the case 2.
【００２８】ケース１は、特願平６−１６６６７８号の
構造に相当するものであり、外周補強鋼板１４を有する
杭１１部分については、鉄骨柱１８と外周補強鋼板１４
との間をスチフナー１７で連結し、その両側については
鉄筋コンクリート構造の通常の配筋方法である主筋１３
と帯筋１６からなる配筋を行っている。The case 1 corresponds to the structure of Japanese Patent Application No. 6-166678. For the portion of the pile 11 having the outer peripheral reinforcing steel plate 14, the steel column 18 and the outer peripheral reinforcing steel plate 14 are provided.
Is connected with a stiffener 17, and both sides of the main bar 13 which is a normal reinforcing method of reinforced concrete structure.
And the stirrups 16 are arranged.
【００２９】ケース２は、本願発明の構造に相当するも
のであり、弱軸方向について、間隔をおいてスチフナー
１５で相対する鋼板１４どうしを連結し、外周補強鋼板
１４によるコンクリート１２の拘束効果を高め、主筋１
３の付着割裂破壊を抑制する構造となっている。また、
帯筋１６は用いていない。The case 2 corresponds to the structure of the present invention, and the steel plates 14 facing each other are connected by the stiffeners 15 at intervals in the weak axis direction, and the effect of restraining the concrete 12 by the outer peripheral reinforcing steel plate 14 is provided. High, main muscle 1
It has a structure that suppresses the adhesive splitting fracture of No. 3. Also,
The stirrups 16 are not used.
【００３０】図６は、図５の供試体１０についての付着
試験結果の一つとして、柱頭水平力Ｑと柱頭水平変形量
δT の関係を示したものである。FIG. 6 shows the relationship between the stigma horizontal force Q and the stigma horizontal deformation amount δ T as one of the adhesion test results for the specimen 10 of FIG.
【００３１】ケース１では主筋１３が降伏し、接合部天
端位置で鉄骨柱１８が曲げ降伏した後、全体の主筋１３
が付着割裂破壊して最大耐力が決まり、ケース２ではス
チフナー１５間の一部主筋１３のみ付着割裂破壊し、柱
頭水平変形量が２００mmに達した時点で実験を終了し
た。In case 1, the main bar 13 yields, and the steel column 18 bends and yields at the top position of the joint.
However, in Case 2, only a part of the main reinforcements 13 between the stiffeners 15 was adhesively split and fractured, and the experiment was terminated when the horizontal deformation amount of the stigma reached 200 mm.
【００３２】また、図中、破線で示したものは、付着割
裂破壊を拘束しない場合の計算値である。Also, the broken lines in the figure are calculated values in the case where the bond splitting fracture is not constrained.
【００３３】これらから、本願発明における付着割裂破
壊の抑制効果が確認された。From these, the effect of suppressing the adhesive splitting fracture in the present invention was confirmed.
【００３４】[0034]
【発明の効果】 鉄筋コンクリート部材の外周を鋼板で被覆し、相対
する面の鋼板をスチフナーで接合したことで、容易に鉄
筋のコンクリート付着力が補強でき、結果として部材耐
力、じん性の向上が図れる。[Effects of the Invention] By coating the outer periphery of a reinforced concrete member with a steel plate and joining the steel plates on the opposite surfaces with a stiffener, the concrete adhesion force of the reinforcing bar can be easily reinforced, and as a result, the member strength and toughness can be improved. .
【００３５】 スチフナーはあらかじめ工場で外周の
鋼板と一体化することで、現場作業が容易となり、また
帯筋の省略により配筋作業が大幅に簡略化される。By integrating the stiffener with the steel plate on the outer periphery in advance at the factory, the site work is facilitated, and the reinforcement work is greatly simplified by omitting the stirrup.
【００３６】 外周補強鋼板によるコンクリートの拘
束により、コンクリート部分の耐力が増し、さらに外周
補強鋼板の内面にずれ止めを設けることで、外周補強鋼
板とコンクリートとの間に付着力が生じ、コンクリート
の拘束効果が増す。By restraining the concrete with the outer peripheral reinforcing steel plate, the yield strength of the concrete portion is increased, and further by providing the inner surface of the outer peripheral reinforcing steel plate with a slip stopper, an adhesive force is generated between the outer peripheral reinforcing steel plate and the concrete to restrain the concrete. The effect increases.
【図１】 本願発明の一実施形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】 本願発明の他の実施形態を示す断面図であ
る。FIG. 2 is a sectional view showing another embodiment of the present invention.
【図３】 本願発明のさらに他の実施形態を示す断面図
である。FIG. 3 is a sectional view showing still another embodiment of the present invention.
【図４】 本願発明の補強構造の作用に関する説明図で
ある。FIG. 4 is an explanatory diagram related to the action of the reinforcing structure of the present invention.
【図５】 １柱１杭基礎構造に適用した場合の本願発明
の補強構造と、先願である特願平６−１６６６７８号の
構造の付着試験に用いた供試体の説明図である。FIG. 5 is an explanatory diagram of a reinforcing structure of the present invention when applied to a one-column / one-pile foundation structure and a specimen used for an adhesion test of the structure of Japanese Patent Application No. 6-166678, which is a prior application.
【図６】 付着試験結果を柱頭水平力と柱頭水平変形量
との関係で比較したグラフである。FIG. 6 is a graph comparing the adhesion test results in relation to the stigma horizontal force and the stigma horizontal deformation amount.
１…鋼板被覆コンクリート部材、２…コンクリート、３
…主筋、４…外周補強鋼板、５…スチフナー、１０…供
試体、１１…杭部分、１２…コンクリート、１３…主
筋、１４…外周補強鋼板、１５…スチフナー、１６…帯
筋、１７…スチフナー、１８…鉄骨柱、１９…固定用フ
ーチング部1 ... Steel plate-covered concrete member, 2 ... Concrete, 3
... main bar, 4 ... outer peripheral reinforcing steel plate, 5 ... stiffener, 10 ... specimen, 11 ... pile part, 12 ... concrete, 13 ... main bar, 14 ... outer peripheral reinforcing steel plate, 15 ... stiffener, 16 ... belt bar, 17 ... stiffener, 18 ... Steel column, 19 ... Footing part for fixing
フロントページの続き (72)発明者 石橋 輝樹 東京都国分寺市光町２丁目８番地38 財団 法人鉄道総合技術研究所内 (72)発明者 蓮田 常雄 東京都国分寺市光町２丁目８番地38 財団 法人鉄道総合技術研究所内 (72)発明者 宍戸 唯一 大阪市中央区北浜４丁目５番33号 住友金 属工業株式会社内 (72)発明者 高田 啓一 大阪市中央区北浜４丁目５番33号 住友金 属工業株式会社内 (72)発明者 原田 昭穂 東京都千代田区大手町２丁目６番３号 新 日本製鐵株式会社内 (72)発明者 吉田 映 東京都千代田区丸の内１丁目１番２号 日 本鋼管株式会社内Front page continuation (72) Inventor Teruki Ishibashi 38-8, Hikarimachi, Kokubunji, Tokyo 38 Inside the Railway Technical Research Institute (72) In Tsuneo Hasuda 38-8, Hikaricho, Kokubunji, Tokyo 38 Inventor (72) Inventor, Shishido, only 5-3, Kitahama, Chuo-ku, Osaka City Sumitomo Kinen Kogyo Co., Ltd. (72) Keiichi Takada, 4-53-3 Kitahama, Chuo-ku, Osaka Industrial Co., Ltd. (72) Inventor Akiho Harada 2-3-6 Otemachi, Chiyoda-ku, Tokyo Inside Nippon Steel Corporation (72) Inventor Akira Yoshida 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Inside Steel Pipe Co., Ltd.
Claims (3)
は一部を鋼板で被覆し、相対する面の鋼板間をコンクリ
ート断面内に配したスチフナーで連結してあることを特
徴とする鉄筋コンクリート部材の鉄筋付着力補強構造。1. A reinforcing bar adhesive force of a reinforced concrete member, characterized in that the whole or part of the outer periphery of the reinforced concrete member is covered with a steel plate, and the steel plates on the opposite faces are connected by a stiffener arranged in a concrete cross section. Reinforced structure.
筋を取り巻くせん断補強のための帯筋を設けない請求項
１記載の鉄筋コンクリート部材の鉄筋付着力補強構造。2. The reinforcing structure for reinforcing the reinforcing bar of a reinforced concrete member according to claim 1, wherein the reinforcing bar is not provided with a reinforcing bar around the main bar for shear reinforcement.
れ止めを設けてある請求項１または２記載の鉄筋コンク
リート部材の鉄筋付着力補強構造。3. The reinforcing structure for reinforcing a reinforcing bar of a reinforced concrete member according to claim 1, wherein the inner surface of the steel plate is provided with a stopper for preventing slippage with concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07183083A JP3129636B2 (en) | 1995-07-19 | 1995-07-19 | Adhesive reinforcement structure for reinforced concrete members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07183083A JP3129636B2 (en) | 1995-07-19 | 1995-07-19 | Adhesive reinforcement structure for reinforced concrete members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0931974A true JPH0931974A (en) | 1997-02-04 |
| JP3129636B2 JP3129636B2 (en) | 2001-01-31 |
Family
ID=16129472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07183083A Expired - Fee Related JP3129636B2 (en) | 1995-07-19 | 1995-07-19 | Adhesive reinforcement structure for reinforced concrete members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3129636B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590397A (en) * | 2012-08-13 | 2014-02-19 | 上海中技桩业股份有限公司 | Partially prestressed and partially non-prestressed concrete hollow pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3712521B1 (en) | 2019-03-19 | 2023-01-18 | LG Electronics Inc. | Air purifier and air purifying system |
| CN111720908B (en) | 2019-03-19 | 2022-04-01 | Lg电子株式会社 | Air purifier, air purification system and method for controlling air purification system |
| EP3712519B1 (en) | 2019-03-19 | 2022-12-07 | LG Electronics Inc. | Air purifying system and method for controlling the air purifying system |
-
1995
- 1995-07-19 JP JP07183083A patent/JP3129636B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590397A (en) * | 2012-08-13 | 2014-02-19 | 上海中技桩业股份有限公司 | Partially prestressed and partially non-prestressed concrete hollow pile |
| CN103590397B (en) * | 2012-08-13 | 2016-03-30 | 上海中技桩业股份有限公司 | A kind of partial prestressing part non-prestressed concrete hollow square pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3129636B2 (en) | 2001-01-31 |
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