JP3106978B2 - Reinforcement structure of column base of RC columnar structure - Google Patents
Reinforcement structure of column base of RC columnar structureInfo
- Publication number
- JP3106978B2 JP3106978B2 JP08289831A JP28983196A JP3106978B2 JP 3106978 B2 JP3106978 B2 JP 3106978B2 JP 08289831 A JP08289831 A JP 08289831A JP 28983196 A JP28983196 A JP 28983196A JP 3106978 B2 JP3106978 B2 JP 3106978B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- column base
- column
- plate
- steel pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Reinforcement Elements For Buildings (AREA)
- Working Measures On Existing Buildindgs (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、主に既存の鉄筋
コンクリート構造（以下、「ＲＣ」という）の橋脚や既
存建物のＲＣ柱などの、既存のＲＣ柱状構造物の柱脚部
の補強構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcement structure for a column base of an existing RC columnar structure, such as a bridge pier of an existing reinforced concrete structure (hereinafter referred to as "RC") or an RC column of an existing building. .
【０００２】[0002]
【従来の技術】最近の内外の大地震によりＲＣ建物は大
きな被害を受けたが、その被害の原因として、柱の剪断
破壊が第一に指摘されている。そして、この柱の剪断破
壊を増長する原因は強震時での多数回交番繰り返し変形
であることが究明され、このような繰り返し力によって
ＲＣ柱が剪断破壊するのを防止し、復元力特性の安定と
粘りを確保するには、主筋によって囲まれている部分の
コンクリート（コアコンクリート）を有効に拘束するこ
とが最適であることが最近の研究で解明され、このよう
な考えに基いて、ＲＣ柱の外周に鋼板を巻き付けて柱の
剪断耐力を高める方法が既になされている。2. Description of the Related Art RC buildings have been heavily damaged by recent large-scale earthquakes inside and outside Japan, and shear damage of columns has been pointed out first as a cause of the damage. It has been found that the cause of the increase in the shear failure of this column is a large number of alternating deformations during strong earthquakes, preventing the RC column from being sheared and destroyed by such repeated forces, and stabilizing the restoring force characteristics. Recent research has revealed that it is optimal to effectively restrain the concrete (core concrete) in the area surrounded by the main reinforcement in order to secure the stiffness. There is already a method of winding a steel plate around the outer periphery of the column to increase the shear strength of the column.
【０００３】さらに、ＲＣ柱の柱脚部に円筒形の拘束鋼
管を設置し、この拘束鋼管と柱脚部との間に膨張コンク
リートを打設し、これによって発生する膨張コンクリー
トの側圧による膨張コンクリートと拘束鋼管との摩擦力
によって柱脚部に作用する圧縮力を拘束鋼管に剪断力と
して伝えるようにした柱脚部の補強構造も開発されてい
る。[0003] Further, a cylindrical constrained steel pipe is installed on the column base of the RC column, and expansive concrete is cast between the constrained steel pipe and the column base. There has been developed a column base reinforcement structure in which a compressive force acting on a column base is transmitted as shearing force to the constrained steel pipe by a frictional force between the column base and the steel pipe.
【０００４】[0004]
【発明が解決しようとする課題】しかし、単なる拘束鋼
管と膨張コンクリートとによる柱脚部の補強では、柱脚
部に鋼板を巻き付けただけの補強に比べて最大耐力の増
加は認められるが、拘束鋼管の有する耐力までは達っせ
ず、拘束鋼管による補強が充分に生かされていない。こ
れは、柱脚部に生ずる圧縮力の拘束鋼管への伝達が不十
分であることが原因と考えられる。However, in the reinforcement of the column pedestal by merely using a constrained steel pipe and expanded concrete, the maximum proof stress is increased as compared with the reinforcement in which a steel plate is wound around the column pedestal. The strength of the steel pipe has not been reached, and the reinforcement by the constrained steel pipe has not been fully utilized. This is considered to be due to insufficient transmission of the compressive force generated in the column base to the constrained steel pipe.
【０００５】一般に、ＲＣ柱状構造物の最大曲げ耐力時
の圧縮側縁には、大きな曲げ圧縮力が発生し、その応力
度はコンクリートの圧縮強度（通常200 〜300Kgf/cm2)
に相当する。このような構造物を拘束鋼管で補強する場
合、構造物に発生する圧縮力を拘束鋼管に確実に剪断伝
達する必要があるが、鋼板とコンクリートとの摩擦係数
は0.5 程度と一定であるため、膨張コンクリートで得ら
れる側圧によってすべての剪断力を拘束鋼管に伝達する
ことは困難なことから、曲げ耐力の増加は見込めない。[0005] In general, a large bending compressive force is generated at the compressive side edge of the RC columnar structure at the time of the maximum bending strength, and the stress is the compressive strength of the concrete (normally 200 to 300 kgf / cm 2 ).
Is equivalent to When such a structure is reinforced with a constrained steel pipe, it is necessary to reliably transmit the compressive force generated in the structure to the constrained steel pipe, but since the coefficient of friction between the steel plate and concrete is constant at about 0.5, Since it is difficult to transmit all the shearing force to the constrained steel pipe by the lateral pressure obtained from the expanded concrete, an increase in the bending strength is not expected.
【０００６】この発明は、以上の課題を解決するために
なされたもので、ＲＣ柱状構造物の柱脚部の耐力補強を
確実にかつ簡単に行えるようにしたＲＣ柱状構造物の柱
脚部の補強構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a RC column structure having a RC column structure capable of reliably and easily reinforcing a column base. It is intended to provide a reinforcing structure.
【０００７】[0007]
【課題を解決するための手段】この発明に係るＲＣ柱状
構造物の柱脚部の補強構造は、ＲＣ柱状構造物の柱脚部
に巻き立て鋼板を巻き付け、この巻き立て鋼板の側面部
に複数枚の剪断力伝達板を突設し、前記柱脚部の周囲に
前記巻き立て鋼板および剪断力伝達板を囲むように拘束
鋼管を設置し、かつ前記巻き立て鋼板と前記拘束鋼管と
の間にコンクリートを充填して前記剪断力伝達板を前記
コンクリート中に埋設して構成されている。According to the present invention, there is provided a reinforcing structure for a column base of an RC columnar structure, wherein a rolled steel plate is wound around a column base of the RC columnar structure, and a plurality of rolled steel plates are provided on side surfaces of the rolled steel plate. A plurality of shear force transmitting plates are protruded, a constrained steel pipe is installed around the column base so as to surround the rolled steel plate and the shear force transmitting plate, and between the rolled steel plate and the constrained steel tube. Concrete is filled and the shearing force transmission plate is buried in the concrete.
【０００８】また、剪断力伝達板は、その突出端がコン
クリート内となるように設けられていると共に、この剪
断力伝達板には複数個の孔を設けている。さらに、コン
クリートには膨張コンクリートが使用されている。Further , the projecting end of the shear force transmitting plate has a connector.
It is provided so that it is inside the cleat and
The shear force transmitting plate has a plurality of holes. In addition, expansion concrete is being used in concrete.
【０００９】[0009]
【発明の実施の形態】発明の実施の形態１． 図１〜図３は、この発明の実施の一形態例を示し、図に
おいて、符号１はＲＣ構造物としてのＲＣ基礎、２はこ
のＲＣ基礎１の上に矩形断面形に構築されたＲＣ柱状構
造物としてのＲＣ柱、３はこのＲＣ柱２の柱脚部Ａに巻
き付けられ、ＲＣ柱２の柱脚部Ａを剪断補強する巻き立
て鋼板、４はＲＣ柱２の外径より大きい円筒形に形成さ
れ、かつＲＣ柱２の柱脚部Ａに設置され、柱脚部Ａの剪
断耐力を増強する拘束鋼管、５は柱脚部Ａと拘束鋼管４
との間の間隙部Ｂに充填され、柱脚部Ａと拘束鋼管４と
を一体構造にするコンクリート、そして、符号６は巻き
立て鋼板３の各側面部3aに横方向に所定間隔おきに縦に
突設され、その突出端がコンクリート５内となるように
設けられており、柱２の柱脚部Ａに発生する剪断力をコ
ンクリート５に伝える剪断力伝達板である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of the Invention 1 to 3 show an embodiment of the present invention. In the drawings, reference numeral 1 denotes an RC foundation as an RC structure, and 2 denotes an RC column formed on the RC foundation 1 in a rectangular cross section. The RC column 3 as a structure is wound around a column base A of the RC column 2, and a rolled steel plate for shearing and reinforcing the column base A of the RC column 2 is a cylindrical shape larger than the outer diameter of the RC column 2. And a constrained steel pipe installed on the column base A of the RC column 2 to increase the shear strength of the column base A,
Is filled in the gap B between the base plate A and the constrained steel pipe 4 to form an integral structure, and reference numeral 6 denotes a vertical length at a predetermined interval in the lateral direction on each side 3a of the rolled steel plate 3. So that the protruding end is inside the concrete 5
The shear force transmission plate is provided to transmit the shear force generated at the column base A of the column 2 to the concrete 5.
【００１０】ＲＣ基礎１およびＲＣ柱２は、ともに在来
の慣用鉄筋コンクリート設計法に基いて構築され、また
巻き立て鋼板３、拘束鋼管４および剪断力伝達板６は、
ともに一般構造用鋼板又は鋼強力鋼板で形成されてい
る。The RC foundation 1 and the RC column 2 are both constructed based on a conventional conventional reinforced concrete design method, and the rolled steel plate 3, the restrained steel pipe 4, and the shear force transmission plate 6 are
Both are formed of a general structural steel sheet or a steel strong steel sheet.
【００１１】剪断力伝達板６は縦に細長い矩形板状に形
成され、かつ所定間隔おきに複数個の孔6aが形成され、
さらに巻き立て鋼板３の各側面部3aに溶接によって固着
されている。孔6aは、剪断力伝達板６のコンクリート５
に対する付着力を最大限に高めて、柱脚部Ａに発生する
剪断力をコンクリート５に略100 パーセント伝達できる
ようにするために形成されている。The shear force transmitting plate 6 is formed in a vertically elongated rectangular plate shape, and a plurality of holes 6a are formed at predetermined intervals.
Furthermore, it is fixed to each side surface portion 3a of the rolled steel plate 3 by welding. The holes 6a are provided in the concrete 5 of the shear force transmitting plate 6.
It is formed in order to maximize the adhesion to the concrete 5 and to transmit almost 100 percent of the shear force generated in the column base A to the concrete 5.
【００１２】なお、剪断力伝達板６の大きさ、厚さ、枚
数、設置間隔および材質、さらに孔6aの大きさおよび形
状などは、柱脚部Ａに発生する最大曲げ耐力時の圧縮側
縁応力度によって適宜に決められている。The size, thickness, number, installation interval and material of the shear force transmitting plate 6, and the size and shape of the hole 6a are determined by the compression side edge at the time of the maximum bending strength generated in the column base A. It is appropriately determined according to the stress level.
【００１３】コンクリート５には、酸化カルシウムの水
和反応により生成される水酸化カルシウムの体積増加を
利用した膨張材を普通セメントなどに混ぜることにより
膨張圧が発生する膨張コンクリートが使用されている。As the concrete 5, an expansive concrete which generates an inflation pressure by mixing an expansive material utilizing an increase in the volume of calcium hydroxide generated by a hydration reaction of calcium oxide into ordinary cement or the like is used.
【００１４】このような構成において、ＲＣ柱２の柱脚
部Ａに作用する圧縮側縁応力は、剪断力伝達板６を介し
てコンクリート５に確実に伝達される。In such a configuration, the compressive side edge stress acting on the column base A of the RC column 2 is reliably transmitted to the concrete 5 via the shear force transmitting plate 6.
【００１５】図３(a),(b),(c) のグラフは、ＲＣ柱２の
柱脚部Ａを巻き立て鋼板３のみで補強し、拘束鋼管４に
よる補強をおこなわない場合（(a))、巻き立て鋼板３と
拘束鋼管４とで補強し、剪断力伝達板６はない場合
（(b))、巻き立て鋼板３と拘束鋼管４とで補強し、さら
に剪断力伝達板６を取り付けた場合（(c))の、それぞれ
の荷重−変位履歴曲線を示したもので、グラフから明ら
かなように剪断力伝達板６を有する拘束鋼管４によって
補強するのが、柱脚部Ａの耐力を著しく増加させること
がわかる。3 (a), 3 (b) and 3 (c) show the case where the column base A of the RC column 2 is reinforced only by the rolled steel plate 3 and the reinforcement by the constrained steel pipe 4 is not performed ((a )), Reinforced with the rolled steel plate 3 and the restraining steel tube 4 and without the shearing force transmission plate 6 ((b)), reinforced with the rolled steel plate 3 and the restraining steel tube 4, and further the shearing force transmission plate 6 The graph shows the respective load-displacement hysteresis curves in the case of mounting ((c)). As is clear from the graph, it is the column base A that is reinforced by the restrained steel pipe 4 having the shear force transmission plate 6. It can be seen that the proof stress is significantly increased.
【００１６】図４(a),(b) は剪断力伝達板６として、両
側面にコンクリート５に対する付着力を高めるために、
凹凸模様のエンボス加工6bを施した鋼板を取り付けた場
合を示し、図５(a),(b) は剪断力伝達板６として、両側
面に水平リブ6cを複数突設した鋼板を使用した場合を示
し、そして、図６(a),(b) は、拘束鋼管４の内側にも剪
断力伝達板６を突設し、その両側面にエンボス加工又は
水平リブを設けた場合を示したもので、いずれの場合も
ＲＣ柱２の柱脚部Ａに作用する圧縮側縁応力は、剪断力
伝達板６とコンクリート５とを介して拘束鋼管４に確実
に伝達される。FIGS. 4 (a) and 4 ( b) show shear force transmitting plates 6 on both sides to increase the adhesive force to concrete 5.
5 (a) and 5 (b) show a case where a steel plate having a plurality of horizontal ribs 6c protruding on both side surfaces is used as the shearing force transmission plate 6. FIG. 5 (a) and FIG. 6 (a) and 6 (b) show a case where a shear force transmitting plate 6 is also protruded inside the constrained steel pipe 4 and embossing or horizontal ribs are provided on both side surfaces thereof. In any case, the compressive side edge stress acting on the column base A of the RC column 2 is reliably transmitted to the constrained steel pipe 4 via the shear force transmitting plate 6 and the concrete 5.
【００１７】[0017]
【発明の効果】この発明に係るＲＣ柱状構造物の柱脚部
の補強構造は、以上説明した構成からなり、ＲＣ柱状構
造物の柱脚部に巻き立て鋼板を巻き付け、この巻き立て
鋼板の側面部に複数枚の剪断力伝達板を突出端がコンク
リート内となるように突設し、前記柱脚部の周囲に前記
巻き立て鋼板および剪断力伝達板を囲むように拘束鋼管
を設置し、かつ前記巻き立て鋼板と前記拘束鋼管との間
に前記コンクリートを充填して前記剪断力伝達板を前記
コンクリート中に埋設して構成されている。そのため、
ＲＣ柱状構造物の柱脚部に作用する圧縮側縁応力は、剪
断力伝達板を介してコンクリートに確実に伝達されるこ
とにより、柱脚部の補強を高めることができる。The reinforcing structure for the column base of the RC columnar structure according to the present invention has the above-described configuration, and a rolled steel plate is wound around the column base of the RC columnar structure. Multiple shear force transmission plates at the protruding end
Projected to be within the REITs, the columnar leg portion constraining the steel pipe so as to surround the winding freshly steel sheet and shear force transmitting plate is placed around and above between the restraining steel pipe and said winding stand steel Concrete is filled and the shearing force transmission plate is buried in the concrete . for that reason,
The compressive side edge stress acting on the column base of the RC columnar structure is reliably transmitted to the concrete via the shear force transmission plate, so that the reinforcement of the column base can be enhanced.
【００１８】また、剪断力伝達板に複数個の孔が設けら
れていると共に、コンクリートに膨張コンクリートが使
用されていることにより、複数個の孔と膨張コンクリー
トの拘束効果とが相まって、剪断力伝達板のコンクリー
トに対する付着力が高められ巻き立て鋼板とコンクリー
ト間の剪断力の伝達が確実になされる。さらに、膨張コ
ンクリートの拘束効果によって、コンクリートと拘束鋼
管との間の剪断力の伝達が確実になされる。これらのこ
とから、柱脚部の補強がさらに高められる。Further, a plurality of holes are provided in the shear force transmitting plate .
And the use of expansive concrete for the concrete,
And the bets restraining effect of the combination, the transmission of shearing force between the adhesive force Re et enhance wound can stand steel and concrete are made reliably for concrete <br/> preparative shear force transmission plate. In addition ,
Due to the restraining effect of the concrete, the transfer of shear force between the concrete and the restrained steel pipe is ensured . These
From further enhanced reinforcement of the columnar leg portion.
【図１】(a) はＲＣ柱の柱脚部の補強構造を示す斜視
図、(b) はその横断面図である。FIG. 1A is a perspective view showing a reinforcing structure for a column base of an RC column, and FIG. 1B is a cross-sectional view thereof.
【図２】(a) はＲＣ柱の柱脚部の補強構造を示す横断面
図、(b) はその縦断面図である2A is a cross-sectional view showing a reinforcing structure of a column base of an RC column, and FIG. 2B is a vertical cross-sectional view thereof.
【図３】(a),(b),(c) はそれぞれ、巻き立て鋼板、巻き
立て鋼板と拘束鋼管、さらに巻き立て鋼板と拘束鋼管と
剪断力伝達板とによる柱脚部の補強効果を示す荷重−履
歴曲線を示すグラフである。[Fig. 3] (a), (b) and (c) show the effect of reinforcing a column base by a rolled steel plate, a rolled steel plate and a restrained steel tube, and a rolled steel plate, a restrained steel tube and a shear force transmission plate, respectively. It is a graph which shows the load-history curve shown.
【図４】(a) はＲＣ柱の柱脚部の補強構造を示す横断面
図、(b) はその縦断面図であるFIG. 4A is a cross-sectional view showing a reinforcing structure of a column base of an RC column, and FIG. 4B is a longitudinal cross-sectional view thereof.
【図５】(a) はＲＣ柱の柱脚部の補強構造を示す横断面
図、(b) はその縦断面図であるFIG. 5A is a cross-sectional view showing a reinforcing structure of a column base of an RC column, and FIG. 5B is a longitudinal cross-sectional view thereof.
【図６】(a) はＲＣ柱の柱脚部の補強構造を示す横断面
図、(b) はその縦断面図であるFIG. 6A is a cross-sectional view showing a reinforcing structure of a column base of an RC column, and FIG. 6B is a longitudinal cross-sectional view thereof.
１…ＲＣ基礎、２…ＲＣ柱（ＲＣ柱状構造物）、３…巻
き立て鋼板、４…拘束鋼管、５…コンクリート、６…剪
断力伝達板。DESCRIPTION OF SYMBOLS 1 ... RC foundation, 2 ... RC column (RC columnar structure), 3 ... Rolled steel plate, 4 ... Restricted steel pipe, 5 ... Concrete, 6 ... Shear force transmission plate.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平９−158127（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E04B 1/16 E04C 3/00 - 3/46 E04C 5/00 - 5/20 E04G 23/02 - 23/08 E01D 1/00 - 21/00 ────────────────────────────────────────────────── (5) References JP-A-9-158127 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E04B 1/16 E04C 3/00-3 / 46 E04C 5/00-5/20 E04G 23/02-23/08 E01D 1/00-21/00
Claims (1)
を巻き付け、この巻き立て鋼板の側面部に複数枚の剪断
力伝達板を突設し、前記柱脚部の周囲に前記巻き立て鋼
板および剪断力伝達板を囲むように拘束鋼管を設置し、
かつ前記巻き立て鋼板と前記拘束鋼管との間にコンクリ
ートを充填して前記剪断力伝達板を前記コンクリート中
に埋設してなり、 前記剪断力伝達板は、その突出端が前記コンクリート内
となるように設けられていると共に、この剪断力伝達板
には複数個の孔を設けており、前記コンクリートには膨
張コンクリートが使用されてい ることを特徴とするＲＣ
柱状構造物の柱脚部の補強構造。1. A rolled steel plate is wound around a column base of an RC columnar structure, and a plurality of shear force transmitting plates are protruded from a side surface of the rolled steel plate to form a roll around the column base. Install a constrained steel pipe around the steel plate and the shear force transmission plate,
And the take-stand steel sheet and the Ri said shearing force transmission plate by filling concrete between the restraining steel pipe name is embedded in said concrete, said shearing force transmission plate, the projecting end of the inner concrete
And the shearing force transmission plate
Has a plurality of holes, and the concrete expands.
RC characterized by Rukoto Zhang concrete has not been used
Reinforcement structure for column base of columnar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08289831A JP3106978B2 (en) | 1996-10-31 | 1996-10-31 | Reinforcement structure of column base of RC columnar structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08289831A JP3106978B2 (en) | 1996-10-31 | 1996-10-31 | Reinforcement structure of column base of RC columnar structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10131285A JPH10131285A (en) | 1998-05-19 |
| JP3106978B2 true JP3106978B2 (en) | 2000-11-06 |
Family
ID=17748343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08289831A Expired - Fee Related JP3106978B2 (en) | 1996-10-31 | 1996-10-31 | Reinforcement structure of column base of RC columnar structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3106978B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589561A (en) * | 2018-04-19 | 2018-09-28 | 石家庄铁道大学 | Heavy haul railway bridge pier steel collar ruggedized construction |
| CN108625299A (en) * | 2018-04-19 | 2018-10-09 | 石家庄铁道大学 | The multi-level reinforcement means of sulphate corrosion heavy haul railway bridge pier |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356923A (en) * | 2001-06-04 | 2002-12-13 | Kawasaki Heavy Ind Ltd | Joint structure for concrete-filled cylindrical body |
| JP3981379B2 (en) * | 2005-01-25 | 2007-09-26 | 日本車輌製造株式会社 | Steel pier structure and its construction method |
| JP5298774B2 (en) * | 2008-10-31 | 2013-09-25 | Ｊｆｅスチール株式会社 | Seismic structure of viaduct |
| JP6009778B2 (en) * | 2012-02-23 | 2016-10-19 | 日立造船株式会社 | Joint structure of steel pier and concrete pile foundation |
| KR101645362B1 (en) * | 2014-02-27 | 2016-08-04 | 한국해양대학교 산학협력단 | Jacket support structure for offshore wind turbine using precast housing and suction pile and the construction method |
| JP6610924B2 (en) * | 2015-07-06 | 2019-11-27 | 清水建設株式会社 | Seismic reinforcement structure and seismic reinforcement method |
| JP6860381B2 (en) * | 2017-03-10 | 2021-04-14 | 東亜建設工業株式会社 | Reinforcement method and structure of steel pipe pile using multiple fine crack type fiber reinforced cement composite material |
| CN113005922B (en) * | 2021-03-04 | 2022-12-27 | 南京工业大学 | Complete method for quickly reinforcing seismic damage pier through steel sleeve wrapping |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3258549B2 (en) * | 1995-12-07 | 2002-02-18 | 三菱重工業株式会社 | Connection structure between pier reinforcement and footing |
-
1996
- 1996-10-31 JP JP08289831A patent/JP3106978B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589561A (en) * | 2018-04-19 | 2018-09-28 | 石家庄铁道大学 | Heavy haul railway bridge pier steel collar ruggedized construction |
| CN108625299A (en) * | 2018-04-19 | 2018-10-09 | 石家庄铁道大学 | The multi-level reinforcement means of sulphate corrosion heavy haul railway bridge pier |
| CN108589561B (en) * | 2018-04-19 | 2019-07-26 | 石家庄铁道大学 | Heavy haul railway bridge pier steel collar ruggedized construction |
| CN108625299B (en) * | 2018-04-19 | 2019-08-20 | 石家庄铁道大学 | The multi-level reinforcement means of sulphate corrosion heavy haul railway bridge pier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10131285A (en) | 1998-05-19 |
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