JP2003184030A - Wall-type pier - Google Patents
Wall-type pierInfo
- Publication number
- JP2003184030A JP2003184030A JP2001384095A JP2001384095A JP2003184030A JP 2003184030 A JP2003184030 A JP 2003184030A JP 2001384095 A JP2001384095 A JP 2001384095A JP 2001384095 A JP2001384095 A JP 2001384095A JP 2003184030 A JP2003184030 A JP 2003184030A
- Authority
- JP
- Japan
- Prior art keywords
- pier
- reinforcing
- main
- main body
- wall
- 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
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内部に鋼管を配置
した扁平比が１：２．５以上の壁式橋脚に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall-type pier with a flatness ratio of 1: 2.5 or more in which a steel pipe is arranged.
【０００２】[0002]
【従来の技術】図７は従来の壁式橋脚における損壊状態
を示す図で、（ａ）は正面図、（ｂ）は側面図である。2. Description of the Related Art FIG. 7 is a view showing a damaged state of a conventional wall type pier, (a) is a front view and (b) is a side view.
【０００３】従来、この種の壁式橋脚を構築しようとし
た場合、地震などに際して橋脚の弱軸方向、即ち長手方
向に直角な方向に大きな荷重が作用し、これにより長手
方向の（中央）基部に過大な荷重が繰り返し作用するこ
ととなる。そのため、図７に示すように、当該部分の主
鉄筋６が座屈して膨れ、かぶりコンクリートが剥離して
しまうことが考えられる。Conventionally, when attempting to construct a wall type pier of this type, a large load acts in the weak axis direction of the pier, that is, in the direction perpendicular to the longitudinal direction in the event of an earthquake or the like, which causes the longitudinal (center) base portion to move. An excessive load will be repeatedly applied to. Therefore, as shown in FIG. 7, it is conceivable that the main rebar 6 in the relevant portion buckles and swells, and the cover concrete peels off.
【０００４】[0004]
【発明が解決しようとする課題】このままでは、主鉄筋
６の座屈が進行し、橋脚上部までかぶりコンクリートが
剥離脱落してしまい、壊滅的な損傷状態を呈することと
なる。従って、扁平比が１：２．５以上のこうした壁式
橋脚を構築する場合には、何らかの対策が望まれる。Under this condition, the buckling of the main rebar 6 progresses, and the cover concrete peels off to the upper part of the pier, resulting in a catastrophic damage condition. Therefore, when constructing such a wall-type pier with a flatness ratio of 1: 2.5 or more, some measure is desired.
【０００５】本発明は、扁平比が１：２．５以上の壁式
橋脚において、地震力などが作用した場合でも、橋脚本
体３の基部に生じる曲げモーメントやせん断力に対して
合理的に抵抗することが出来る、壁式橋脚を提供するこ
とを目的とするものである。The present invention reasonably resists bending moments and shearing forces generated at the base of the pier main body 3 even when an earthquake force acts on the wall type pier with a flatness ratio of 1: 2.5 or more. The purpose is to provide a wall pier that can be used.
【課題を解決するための手段】請求項１の発明は、扁平
比が１：２．５以上の橋脚本体（３）を有する壁式橋脚
（１）において、前記橋脚本体は、幅方向に配置された
複数の鋼管柱（５）および、該複数の鋼管柱の周囲を取
り囲む形で設けられた、主鉄筋（６）及び帯鉄筋（９）
から構成される補強鉄筋体（１２）を有しており、前記
補強鉄筋体の前記主鉄筋と帯鉄筋の交差部分（ＣＰ）近
傍を前記橋脚本体の奥行き方向（矢印Ａ、Ｂ方向）に拘
束する中間拘束筋（１０）を複数設けて構成される。請
求項２の発明は、請求項１記載の壁式橋脚において、前
記中間拘束筋は、前記主鉄筋と帯鉄筋の交差部分近傍を
通過して橋脚本体を貫通する形で設けられており、該中
間拘束筋の両端には、定着板（１３）が前記橋脚本体を
両側から挟み込む形で設けられていることを特徴として
構成される。請求項３の発明は、請求項１記載の壁式橋
脚において、前記中間拘束筋は前記主鉄筋と帯鉄筋の交
差部分（ＣＰ）近傍で、定着板により前記補強鉄筋体に
定着されていることを特徴として構成される。請求項４
の発明は、扁平比が１：２．５以上の橋脚本体を有する
壁式橋脚において、前記橋脚本体は、主鉄筋及び帯鉄筋
から構成される補強鉄筋体を有しており、前記補強鉄筋
体の前記主鉄筋と帯鉄筋の交差部分近傍を前記橋脚本体
の奥行き方向に拘束する中間拘束筋を複数設け、前記中
間拘束筋は、前記主鉄筋と帯鉄筋の交差部分近傍を通過
して橋脚本体を貫通する形で設けられており、該中間拘
束筋の両端に、定着板を前記橋脚本体を両側から挟み込
む形で設けて構成される。請求項５の発明は、扁平比が
１：２．５以上の橋脚本体を有する壁式橋脚において、
前記橋脚本体は、主鉄筋及び帯鉄筋から構成される補強
鉄筋体を有しており、前記補強鉄筋体の前記主鉄筋と帯
鉄筋の交差部分近傍を前記橋脚本体の奥行き方向に拘束
する中間拘束筋を複数設け、前記中間拘束筋は前記主鉄
筋と帯鉄筋の交差部分近傍で、定着板により前記補強鉄
筋体に定着されていることを特徴として構成される。According to a first aspect of the present invention, in a wall type pier (1) having a pier main body (3) having a flatness ratio of 1: 2.5 or more, the pier main body is arranged in the width direction. Steel pipe columns (5) provided, and main rebars (6) and band rebars (9) provided so as to surround the periphery of the plurality of steel pipe columns.
A reinforcement reinforcing bar body (12) composed of, and restraining the vicinity of the intersection (CP) of the main reinforcing bar and the band reinforcing bar of the reinforcing reinforcing bar in the depth direction of the pier body (arrow A, B direction). It is configured by providing a plurality of intermediate restraint muscles (10). According to a second aspect of the present invention, in the wall-type pier according to the first aspect, the intermediate restraint bar is provided so as to pass through a vicinity of an intersection of the main reinforcing bar and the band reinforcing bar and penetrate the pier main body. A fixing plate (13) is provided at both ends of the intermediate restraint bar so as to sandwich the pier body from both sides. According to a third aspect of the present invention, in the wall type pier according to the first aspect, the intermediate restraint bar is fixed to the reinforcing reinforcing bar body by a fixing plate in the vicinity of an intersection (CP) of the main reinforcing bar and the band reinforcing bar. It is characterized by. Claim 4
Of the invention, in a wall-type pier having a pier main body with a flatness ratio of 1: 2.5 or more, the pier main body has a reinforcing reinforcing bar composed of a main reinforcing bar and a strip reinforcing bar, and the reinforcing bar A plurality of intermediate restraint bars for restraining the vicinity of the intersection of the main reinforcement and the strip reinforcement in the depth direction of the pier main body are provided, and the intermediate restraint passes through the vicinity of the intersection of the main reinforcement and the strip reinforcement and the pier main body The fixing plates are provided at both ends of the intermediate restraint bar so as to sandwich the pier main body from both sides. The invention of claim 5 is a wall pier having a pier main body with a flatness ratio of 1: 2.5 or more,
The pier main body has a reinforcing reinforcing bar body composed of main reinforcing bars and strip reinforcing bars, and an intermediate restraint for constraining the vicinity of an intersection of the main reinforcing bar and the strip reinforcing bars of the reinforcing reinforcing bar in the depth direction of the pier main body. A plurality of reinforcements are provided, and the intermediate restraint reinforcement is characterized in that it is fixed to the reinforcing reinforcement body by a fixing plate in the vicinity of the intersection of the main reinforcement and the band reinforcement.
【０００６】[0006]
【発明の効果】請求項１の発明によれば、地震などに際
しては、橋脚本体（３）の幅方向に直角な奥行き方であ
る矢印Ａ、Ｂ方向に大きな荷重が作用するが、該荷重に
伴って生じる基部（ＢＰ）のせん断力は、鋼管柱（５）
が主として負担し、コンクリートかぶり部、即ち補強鉄
筋体（１２）が配置されている部分に作用するせん断力
を大幅に軽減することが出来る。しかも、中間拘束筋
（１０）が、奥行き方向である矢印Ａ，Ｂ方向に配置さ
れているので、補強鉄筋体（１２）を横拘束して、補強
鉄筋体（１２）がその長手方向（幅方向）中央部ＣＴで
外方に膨らむことを抑制するので、補強鉄筋体（１２）
の外周部に打設構築されるかぶりコンクリートが剥離す
る事態を極力回避することが出来る。According to the invention of claim 1, in the event of an earthquake or the like, a large load acts in the directions of arrows A and B which are depth directions perpendicular to the width direction of the pier body (3). The resulting shearing force of the base (BP) is the steel pipe column (5).
Is mainly burdened with, and the shearing force acting on the concrete covering part, that is, the part where the reinforcing reinforcing bar (12) is arranged can be greatly reduced. Moreover, since the intermediate restraint bar (10) is arranged in the direction of the arrows A and B, which is the depth direction, the reinforcing bar body (12) is laterally restricted so that the reinforcing bar body (12) has its longitudinal direction (width). (Direction) As it suppresses outward swelling at the central part CT, the reinforcing reinforcing bar (12)
It is possible to avoid as much as possible the situation where the cover concrete that is placed and built on the outer periphery of the concrete peels off.
【０００７】請求項２の発明によれば、定着板（１３）
を介して補強鉄筋体（１２）および打設構築されたコン
クリート（１１）が図中外方向へ膨らもうとする変形を
より効果的に防止することが出来る。また、中間拘束筋
（１０）の両端を橋脚本体（３）の外部に突出させるこ
とで、橋脚本体（３）を構築する際の型枠の支持などに
も利用すること出来、便利である。According to the invention of claim 2, the fixing plate (13)
Through this, it is possible to more effectively prevent the deformation of the reinforced rebar body (12) and the concrete (11) that has been cast and constructed to expand outward in the drawing. Further, by projecting both ends of the intermediate restraint bar (10) to the outside of the pier main body (3), it can be used for supporting a formwork when constructing the pier main body (3), which is convenient.
【０００８】請求項３の発明によれば、定着板（１３）
を介して補強鉄筋体（１２）が図中外方向へ膨らもうと
する変形をより効果的に防止することが出来る。According to the invention of claim 3, the fixing plate (13)
Through this, it is possible to more effectively prevent the reinforcing reinforcing bar (12) from being deformed to expand outward in the drawing.
【０００９】請求項４及び請求項５の発明によれば、本
発明を、ＲＣ（鉄筋コンクリート）構造の壁式橋脚にも
適用することが出来る。According to the inventions of claims 4 and 5, the present invention can be applied to a wall type pier of RC (reinforced concrete) structure.
【００１０】なお、括弧内の番号等は、図面における対
応する要素を示す便宜的なものであり、従って、本記述
は図面上の記載に限定拘束されるものではない。The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and the present description is not limited to the description in the drawings.
【００１１】[0011]
【発明の実施の形態】図１は、本発明による壁式橋脚の
一例を示す正面図、図２は、図１の側面図、図３は、図
１の配筋状態を示す正面図、図４は、図３のＦ−Ｆ断面
を示す平面図、図５は、中間拘束筋の定着方法の一例を
示す平面図、図６は、中間拘束筋の定着方法の別の例を
示す平面図である。1 is a front view showing an example of a wall type pier according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a front view showing a bar arrangement state of FIG. 4 is a plan view showing an F-F cross section of FIG. 3, FIG. 5 is a plan view showing an example of a fixing method of the intermediate restraint muscles, and FIG. 6 is a plan view showing another example of a fixing method of the intermediate restraint muscles. Is.
【００１２】壁式橋脚１は、図１に示すように、フーチ
ング２を有しており、フーチング２には、橋脚本体３が
構築されている。橋脚本体３は、図４に示すように、奥
行き寸法Ｄと、幅寸法Ｗの比、即ち、扁平比が、１：
２．５以上の細長い、壁状に形成されており、壁式橋脚
１により支持される橋梁は、橋脚本体３の上端部３ａ
に、ブラケット７を介して、図１矢印Ａ、Ｂ方向に架橋
されるものである。The wall type pier 1 has a footing 2 as shown in FIG. 1, and a pier main body 3 is constructed in the footing 2. As shown in FIG. 4, the pier main body 3 has a ratio of the depth dimension D to the width dimension W, that is, a flatness ratio of 1:
The bridge, which is formed in a long and thin wall shape of 2.5 or more and is supported by the wall-type pier 1, is the upper end portion 3a of the pier main body 3.
1 through the bracket 7 in the direction of arrows A and B in FIG.
【００１３】橋脚本体３には、例えば３本の鋼管柱５
が、フーチング２部分から橋脚本体３を上下に貫通する
形で、橋脚の幅方向である図２矢印Ｃ、Ｄ方向に一列に
設けられており（なお、鋼管柱５は、一列に限らず、２
列以上でもよい）、各鋼管柱５は、複数のリブ付き鋼管
５ａ（鋼管５ａとしては、リブ付き鋼管でなくともよ
く、通常の鋼管でもよい）を上下方向に継ぎ足し接続し
た形で形成されている。３本の鋼管柱５の周囲には、後
述する主鉄筋６及び帯鉄筋９から構成される補強鉄筋体
１２が３本の鋼管柱５を取り囲む形で設置されており、
補強鉄筋体１２は、３本の鋼管柱５を取り囲む形で上下
方向に設置された多数の主鉄筋６を有している。また、
各主鉄筋６の下端は、フーチング２の下部近傍にまで達
している。The pier body 3 includes, for example, three steel pipe columns 5
However, in the form of vertically penetrating the pier main body 3 from the footing 2 portion, the pier main body 3 is provided in one row in the width direction of the pier, that is, in the direction of arrows C and D in FIG. 2 (the steel pipe columns 5 are not limited to one row, Two
Each of the steel pipe columns 5 is formed by connecting a plurality of ribbed steel pipes 5a (the steel pipes 5a need not be ribbed steel pipes, but may be ordinary steel pipes) by vertically connecting them. There is. Around each of the three steel tube columns 5, a reinforcing reinforcing bar body 12 composed of a main reinforcing bar 6 and a band reinforcing bar 9 described later is installed in a form surrounding the three steel tube columns 5.
The reinforcing reinforcing bar 12 has a large number of main reinforcing bars 6 installed in the up-down direction so as to surround the three steel pipe columns 5. Also,
The lower end of each main rebar 6 reaches near the lower part of the footing 2.
【００１４】主鉄筋６には、図４に示すように、それら
主鉄筋６を相互に連結する形で長方形の環状に形成され
た帯鉄筋９が橋脚本体３の外周部３ｂに沿った形で水平
方向に配筋されており、帯鉄筋９は、図３に示すよう
に、上下方向に所定の間隔Ｗ１で多数配置されている。
各帯鉄筋９の橋脚の奥行き方向である矢印Ａ、Ｂ方向に
対向した部位には、中間拘束筋１０、１０が、隣接する
２本の鋼管柱５、５の間に配置される形で設けられてお
り、各中間拘束筋１０の両端には、鉤状または半円形状
に形成されたフック１０ａ、１０ａが形成され、中間拘
束筋１０は該フック１０ａを主鉄筋６と帯鉄筋９の交差
部分ＣＰの帯鉄筋９に引っかける形で設けられている。
なお、フック１０ａを引っかける位置は、主鉄筋６と帯
鉄筋９の交差部分ＣＰのみに限らず、交差部分ＣＰの近
傍の帯鉄筋９であればよい。本明細書では、フック１０
ａが引っかけられる部位としての、主鉄筋６と帯鉄筋９
の交差部分ＣＰおよびその近傍を称して、「交差部分Ｃ
Ｐ近傍」と表示する。なお、フーチング２及び橋脚本体
３には、鋼管柱５、主鉄筋６、帯鉄筋９及び中間拘束筋
１０の周囲を囲み、壁式橋脚１の外形をなす形でコンク
リート１１が充填打設されている。As shown in FIG. 4, the main reinforcing bars 6 are provided with strip-shaped reinforcing bars 9 formed in a rectangular ring shape so as to connect the main reinforcing bars 6 to each other along the outer peripheral portion 3b of the pier main body 3. As shown in FIG. 3, the reinforcing bars 9 are arranged in the horizontal direction and are arranged in the vertical direction at predetermined intervals W1.
Intermediate restraint bars 10 and 10 are provided at positions facing each other in the direction of the arrows A and B, which are the depth direction of the pier of each strip rebar 9, in such a manner that they are arranged between two adjacent steel pipe columns 5 and 5. Hooks 10a and 10a formed in a hook shape or a semicircular shape are formed at both ends of each intermediate restraint bar 10. The intermediate restraint bar 10 uses the hook 10a to intersect the main reinforcing bar 6 and the band reinforcing bar 9. It is provided so as to be hooked on the reinforcing bar 9 of the portion CP.
The position at which the hook 10a is hooked is not limited to the intersection CP between the main reinforcing bar 6 and the strip reinforcing bar 9 and may be the strip reinforcing bar 9 near the intersection CP. In this specification, the hook 10
Main reinforcing bar 6 and strip reinforcing bar 9 as parts where a is hooked
Of the intersection CP and its vicinity,
"P vicinity" is displayed. In addition, the footing 2 and the pier main body 3 are filled with concrete 11 so as to surround the steel pipe columns 5, the main reinforcing bars 6, the belt reinforcing bars 9 and the intermediate restraining bars 10 and form the outer shape of the wall type pier 1. There is.
【００１５】壁式橋脚１などは以上のような構成を有す
るので、地震などに際しては、橋脚本体３の長手方向に
直角な橋脚奥行き方向である矢印Ａ、Ｂ方向に大きな荷
重が作用するが、該荷重に伴って生じる基部ＢＰのせん
断力は、鋼管柱５が主として負担し、コンクリートかぶ
り部、即ち主鉄筋６が配置されている部分に作用するせ
ん断力を大幅に軽減することが出来る。なお、このせん
断力負担効果は、鋼管柱５として、リブ付きの鋼管５ａ
を使用すると、より高くすることが出来る。Since the wall type pier 1 and the like have the above-mentioned structure, a large load acts in the direction of arrows A and B which are the pier depth direction perpendicular to the longitudinal direction of the pier main body 3 in the event of an earthquake. The steel pipe column 5 mainly bears the shearing force of the base portion BP caused by the load, and the shearing force acting on the concrete covering portion, that is, the portion where the main rebar 6 is arranged can be greatly reduced. In addition, this shearing force bearing effect is that the steel pipe column 5 has a ribbed steel pipe 5a.
Can be made higher by using.
【００１６】しかも、中間拘束筋１０が、橋脚奥行き方
向である矢印Ａ，Ｂ方向に配置されているので、主鉄筋
６および帯鉄筋９からなる補強鉄筋体１２を横拘束し
て、補強鉄筋体１２がその長手方向（幅方向）中央部Ｃ
Ｔで外方に膨らむことを抑制するので、補強鉄筋体１２
の外周部に打設構築されるかぶりコンクリートが剥離す
る事態を極力回避することが出来る。なお、１個の環状
の帯鉄筋９あたりに配置する中間拘束筋１０の本数など
は、期待すべき横拘力に応じて任意に設定することが可
能であり、また補強鉄筋体１２の上下でその本数を変化
させることも出来る。Moreover, since the intermediate restraint bars 10 are arranged in the direction of the arrows A and B, which are the depth direction of the pier, the reinforcing bar body 12 composed of the main reinforcing bar 6 and the band reinforcing bar 9 is laterally constrained to reinforce the reinforcing bar body. 12 is the central portion C in the longitudinal direction (width direction)
Reinforcing rebar body 12 because it suppresses outward expansion at T
It is possible to avoid as much as possible the situation where the cover concrete that is placed and built on the outer periphery of the concrete peels off. In addition, the number of the intermediate restraint bars 10 arranged around one ring-shaped reinforcing bar 9 can be arbitrarily set according to the expected lateral contraction force. The number can be changed.
【００１７】また、中間拘束筋１０と補強鉄筋体１２と
の接続部分を、上述のフック１０ａで構成すると、フッ
ク１０ａ周辺に大きな力が作用するとフック１０ａがほ
どけやすいため、図５に示すように、中間拘束筋１０を
主鉄筋６と帯鉄筋９の交差部分ＣＰ近傍を通過させて更
に、橋脚本体３の外部にまでその両端を突出させ、当該
部分に定着板１３、１３をナット１５、１５などを介し
て打設されたコンクリート１１の外側部分に、橋脚本体
３を奥行き方向の両側から挟み込む形で固定配置する構
成とすることもできる。これにより、中間拘束筋１０
は、定着板１３を介して補強鉄筋体１２および打設構築
されたコンクリート１１が図中上下方向へ膨らもうとす
る変形をより効果的に防止することが出来る。また、こ
のように、中間拘束筋１０の両端を橋脚本体３の外部に
突出させることで、橋脚本体３を構築する際の型枠の支
持などにも利用すること出来、便利である。Further, when the connecting portion between the intermediate restraint bar 10 and the reinforcing reinforcing bar body 12 is constituted by the above-mentioned hook 10a, the hook 10a is easily unraveled when a large force is applied to the periphery of the hook 10a, and as shown in FIG. , The intermediate restraint bar 10 is passed near the intersection CP of the main bar 6 and the band bar 9, and both ends thereof are projected to the outside of the pier body 3, and the fixing plates 13 and 13 are fixed to the nuts 15 and 15 at the parts. It is also possible to adopt a configuration in which the pier main body 3 is fixedly arranged so as to be sandwiched from both sides in the depth direction, on the outer portion of the concrete 11 that has been cast via the above. Thereby, the intermediate restraint muscle 10
Can more effectively prevent the deformation of the reinforced reinforcing bars 12 and the concrete 11 that has been cast and constructed through the fixing plate 13 so as to expand in the vertical direction in the figure. Further, in this way, by projecting both ends of the intermediate restraint bar 10 to the outside of the pier main body 3, it can be used for supporting a formwork when constructing the pier main body 3, which is convenient.
【００１８】更に、図６に示すように、中間拘束筋１０
を主鉄筋６と帯鉄筋９の交差部分ＣＰ近傍部分で、定着
板１３、１３及びナット１５、１５を介して補強鉄筋体
１２に定着する構造も用いることが出来る。Further, as shown in FIG.
It is also possible to use a structure in which is fixed to the reinforcing reinforcing bar 12 through the fixing plates 13 and 13 and the nuts 15 and 15 in the vicinity of the crossing point CP of the main reinforcing bar 6 and the band reinforcing bar 9.
【００１９】なお、中間拘束筋１０を定着板１３を介し
て補強鉄筋体１２などに定着する構造は、鋼管柱５を用
いた壁式橋脚１に限らず、鋼管柱５を用いず、主鉄筋６
及び帯鉄筋９から構成される補強鉄筋体１２のみから構
築されるＲＣ（鉄筋コンクリート）構造の壁式橋脚にも
適用することが出来る。The structure in which the intermediate restraint bar 10 is fixed to the reinforcing bar 12 and the like via the fixing plate 13 is not limited to the wall type pier 1 using the steel pipe column 5, but the steel pipe column 5 is not used. 6
Also, the present invention can be applied to a wall type pier of RC (reinforced concrete) structure constructed only from the reinforcing reinforcing bar body 12 composed of and the reinforcing bars 9.
【図１】図１は、本発明による壁式橋脚の一例を示す正
面図である。FIG. 1 is a front view showing an example of a wall-type pier according to the present invention.
【図２】図２は、図１の側面図である。FIG. 2 is a side view of FIG.
【図３】図３は、図１の配筋状態を示す正面図である。FIG. 3 is a front view showing the bar arrangement state of FIG. 1.
【図４】図４は、図３のＦ−Ｆ断面を示す平面図であ
る。4 is a plan view showing a FF cross section of FIG. 3. FIG.
【図５】図５は、中間拘束筋の定着方法の一例を示す平
面図である。FIG. 5 is a plan view showing an example of a method of fixing the intermediate restraint muscles.
【図６】図６は、中間拘束筋の定着方法の別の例を示す
平面図である。FIG. 6 is a plan view showing another example of the method of fixing the intermediate restraint muscles.
【図７】図７は従来の壁式橋脚における損壊状態を示す
図で、（ａ）は正面図、（ｂ）は側面図である。FIG. 7 is a diagram showing a damaged state of a conventional wall pier, (a) is a front view and (b) is a side view.
１……壁式橋脚 ３……橋脚本体 ５……鋼管柱 ６……主鉄筋 ９……帯鉄筋 １０……中間拘束筋 １１……コンクリート １２……補強鉄筋体 １３……定着板 ＣＰ……交差部分 1 ... Wall type pier 3 ... Main body of pier 5 ... Steel tube column 6 ... Main rebar 9 ... Belt reinforcement 10 ... Intermediate restraint muscle 11 …… Concrete 12 ... Reinforcing rebar 13 ... Fusing plate CP: intersection
───────────────────────────────────────────────────── フロントページの続き (72)発明者 今野 久志 北海道札幌市豊平区平岸１条３丁目 独立 行政法人 北海道開発土木研究所内 (72)発明者 皆川 昌樹 北海道札幌市豊平区平岸１条３丁目 独立 行政法人 北海道開発土木研究所内 (72)発明者 佐藤 京 北海道札幌市豊平区平岸１条３丁目 独立 行政法人 北海道開発土木研究所内 Ｆターム(参考） 2D059 AA03 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hisashi Konno Independent, 1-chome, 3-chome, Hiragishi, Toyohira-ku, Sapporo-shi, Hokkaido Administrative Agency Hokkaido Institute of Civil Engineering (72) Inventor Masaki Minagawa Independent, 1-chome, 3-chome, Hiragishi, Toyohira-ku, Sapporo-shi, Hokkaido Administrative Agency Hokkaido Institute of Civil Engineering (72) Inventor Kyo Sato Independent, 1-chome, 3-chome, Hiragishi, Toyohira-ku, Sapporo-shi, Hokkaido Administrative Agency Hokkaido Institute of Civil Engineering F-term (reference) 2D059 AA03
Claims (5)
する壁式橋脚において、 前記橋脚本体は、幅方向に配置された複数の鋼管柱およ
び、該複数の鋼管柱の周囲を取り囲む形で設けられた、
主鉄筋及び帯鉄筋から構成される補強鉄筋体を有してお
り、 前記補強鉄筋体の前記主鉄筋と帯鉄筋の交差部分近傍を
前記橋脚本体の奥行き方向に拘束する中間拘束筋を複数
設けて構成した、壁式橋脚。1. A wall pier having a pier main body with a flatness ratio of 1: 2.5 or more, wherein the pier main body surrounds a plurality of steel pipe columns arranged in the width direction and the periphery of the plurality of steel pipe columns. Provided in the form of
It has a reinforcing reinforcing bar composed of main reinforcing bars and strip reinforcing bars, and a plurality of intermediate restraining bars for restricting the vicinity of the intersection of the main reinforcing bars and the strip reinforcing bars of the reinforcing reinforcing bar in the depth direction of the pier body are provided. The constructed wall pier.
交差部分近傍を通過して橋脚本体を貫通する形で設けら
れており、 該中間拘束筋の両端には、定着板が前記橋脚本体を両側
から挟み込む形で設けられていることを特徴とする、請
求項１記載の壁式橋脚。2. The intermediate restraint bar is provided so as to pass through the vicinity of the intersection of the main reinforcing bar and the band reinforcing bar and penetrate the main body of the pier. An anchoring plate is provided at both ends of the intermediate restraint bar. The wall pier according to claim 1, wherein the pier main body is provided so as to sandwich the pier main body from both sides.
差部分で、定着板により前記補強鉄筋体に定着されてい
ることを特徴とする、請求項１記載の壁式橋脚。3. The wall-type pier according to claim 1, wherein the intermediate restraint bar is fixed to the reinforcing bar by a fixing plate at an intersection of the main reinforcing bar and the band reinforcing bar.
する壁式橋脚において、 前記橋脚本体は、主鉄筋及び帯鉄筋から構成される補強
鉄筋体を有しており、 前記補強鉄筋体の前記主鉄筋と帯鉄筋の交差部分を前記
橋脚本体の奥行き方向に拘束する中間拘束筋を複数設
け、 前記中間拘束筋は、前記主鉄筋と帯鉄筋の交差部分を通
過して橋脚本体を貫通する形で設けられており、 該中間拘束筋の両端に、定着板を前記橋脚本体を両側か
ら挟み込む形で設けて構成した、壁式橋脚。4. A wall type pier having a pier main body with a flatness ratio of 1: 2.5 or more, wherein the pier main body has a reinforcing rebar body composed of main reinforcing bars and strip reinforcing bars. Providing a plurality of intermediate restraint bars that restrain the intersection of the main rebar and the strip rebar of the body in the depth direction of the pier body, the intermediate restraint bar passing through the intersection of the main rebar and the strip rebar A wall-type pier, which is provided so as to penetrate therethrough, and has fixing plates provided at both ends of the intermediate restraint bar so as to sandwich the pier main body from both sides.
する壁式橋脚において、 前記橋脚本体は、主鉄筋及び帯鉄筋から構成される補強
鉄筋体を有しており、 前記補強鉄筋体の前記主鉄筋と帯鉄筋の交差部分を前記
橋脚本体の奥行き方向に拘束する中間拘束筋を複数設
け、 前記中間拘束筋は前記主鉄筋と帯鉄筋の交差部分で、定
着板により前記補強鉄筋体に定着されていることを特徴
とする、壁式橋脚。5. A wall-type pier having a pier main body with a flatness ratio of 1: 2.5 or more, wherein the pier main body has a reinforcing reinforcing bar body composed of main reinforcing bars and strip reinforcing bars. Providing a plurality of intermediate restraint bars that restrain the intersection of the main rebar and the strip rebar of the body in the depth direction of the pier main body, the intermediate restraint bar is an intersection of the main rebar and the strip rebar, and the reinforcing rebar is fixed by a fixing plate. A wall-type pier, which is characterized by being fixed to the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001384095A JP3903208B2 (en) | 2001-12-18 | 2001-12-18 | Wall-mounted pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001384095A JP3903208B2 (en) | 2001-12-18 | 2001-12-18 | Wall-mounted pier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003184030A true JP2003184030A (en) | 2003-07-03 |
| JP3903208B2 JP3903208B2 (en) | 2007-04-11 |
Family
ID=27593914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001384095A Expired - Lifetime JP3903208B2 (en) | 2001-12-18 | 2001-12-18 | Wall-mounted pier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3903208B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635063A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Post-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| CN102635064A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Pre-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| JP2018009361A (en) * | 2016-07-13 | 2018-01-18 | Ｊｆｅエンジニアリング株式会社 | Gravity type tide embankment |
-
2001
- 2001-12-18 JP JP2001384095A patent/JP3903208B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635063A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Post-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| CN102635064A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Pre-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| JP2018009361A (en) * | 2016-07-13 | 2018-01-18 | Ｊｆｅエンジニアリング株式会社 | Gravity type tide embankment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3903208B2 (en) | 2007-04-11 |
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