JPH0971908A - Bridge pier structure - Google Patents
Bridge pier structureInfo
- Publication number
- JPH0971908A JPH0971908A JP27025595A JP27025595A JPH0971908A JP H0971908 A JPH0971908 A JP H0971908A JP 27025595 A JP27025595 A JP 27025595A JP 27025595 A JP27025595 A JP 27025595A JP H0971908 A JPH0971908 A JP H0971908A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing
- pier
- concrete
- bridge pier
- adhesive
- 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.)
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Links
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- Bridges Or Land Bridges (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、橋脚構造に関する
ものである。TECHNICAL FIELD The present invention relates to a pier structure.
【0002】[0002]
【従来の技術】従来、コンクリート製の橋脚に対して、
補強鋼板や補強コンクリートを橋脚本体に一体化させて
補強することにより耐震性を高めたものがあった。2. Description of the Related Art Conventionally, for concrete piers,
In some cases, reinforced steel plates and reinforced concrete were integrated into the pier body to reinforce it to improve earthquake resistance.
【0003】かかる構造は、橋脚本体の周壁を補強鋼板
や補強コンクリートで囲繞し、同補強鋼板や補強コンク
リートを橋脚本体の周壁に接着剤として高強度のエポキ
シ樹脂により一体的に接着したものが一般的である。In this structure, the peripheral wall of the pier main body is surrounded by a reinforcing steel plate or reinforced concrete, and the reinforcing steel plate or reinforced concrete is integrally adhered to the peripheral wall of the pier main body by an epoxy resin having high strength as an adhesive. Target.
【0004】[0004]
【発明が解決しようとする課題】ところが、コンクリー
ト製の橋脚に対して、上記した従来の補強では耐震性が
十分ではないことが分かった。However, it has been found that the conventional reinforcement described above does not have sufficient seismic resistance for concrete bridge piers.
【0005】これは、地震等による大きな力が加わった
際に、エポキシ樹脂がコンクリートや補強鋼板等の変形
に追随できないという根本的な欠点が最大要因となると
考えられる。It is considered that the most important factor is the fundamental defect that the epoxy resin cannot follow the deformation of concrete, reinforced steel plate, etc. when a large force is applied due to an earthquake or the like.
【0006】また、エポキシ樹脂は水によって剥離する
という性質があり、橋脚本体と補強材との一体化を阻害
する要因ともなっている。Further, the epoxy resin has a property of being peeled off by water, which is also a factor that hinders the integration of the pier body and the reinforcing material.
【0007】さらに、補強材がコンクリートの場合は、
型枠を組む必要があるので時間がかかり、その間に接着
剤としての効果が薄れてしまうという施工の際の問題も
あった。Furthermore, when the reinforcing material is concrete,
Since it is necessary to assemble a formwork, it takes time, and during that time, there is a problem in construction that the effect as an adhesive is weakened.
【0008】近年、上記したような強度のみを追求した
従来の橋脚構造の欠陥が指摘されており、新たな耐震対
策の確立が急務となっている。In recent years, the defects of the conventional bridge pier structure in which only the above-mentioned strength is pursued have been pointed out, and there is an urgent need to establish new measures against earthquakes.
【0009】そこで、力を受け流すことができるよう
に、橋脚に柔軟性、及び、靱性を付与すべく、例えば、
帯筋を増加させるなどの対策が考えられている。Therefore, in order to impart flexibility and toughness to the bridge pier so that the force can be distributed, for example,
Measures such as increasing the stirrup are being considered.
【0010】しかし、主鉄筋と帯筋との目が細かくなり
すぎると、コンクリートを打つ場合に骨材が中途で引っ
掛かり、その下方に空洞を生じるおそれがあるなどの新
たな課題が残されている。However, if the main rebar and the stirrups become too fine, there is a new problem that the aggregate may be caught midway when concrete is struck and a cavity may be formed below it. .
【0011】本発明は、上記課題を解決することのでき
る橋脚構造を提供することを目的とする。An object of the present invention is to provide a pier structure that can solve the above problems.
【0012】[0012]
【課題を解決するための手段】本発明は、コンクリート
製の橋脚本体の周壁を、鋼板からなる補強筒体で囲繞
し、同橋脚本体の周壁と補強筒体との間の環状空間に、
複合ポリマーエマルジョンを主剤に混合して製造した接
着剤を充填し、橋脚本体に補強筒体を一体的に接着した
ことを特徴とする橋脚構造に係るものである。According to the present invention, a peripheral wall of a concrete pier main body is surrounded by a reinforcing cylinder made of a steel plate, and an annular space between the peripheral wall of the pier main body and the reinforcing cylinder is provided.
The present invention relates to a pier structure characterized in that a reinforcing polymer is integrally bonded to a pier body by filling an adhesive produced by mixing a composite polymer emulsion with a main component.
【0013】また、本発明は以下の構成にも特徴を有す
る。The present invention is also characterized by the following configurations.
【0014】(イ)コンクリート製の橋脚本体の周壁
を、補強鉄筋を埋設したコンクリート補強壁で囲繞し、
同コンクリート補強壁を橋脚本体の周壁に複合ポリマー
エマルジョンを主剤に混合して製造した接着剤によって
一体的に接着するとともに、補強鉄筋のアンカー部を、
橋脚本体内に、複合ポリマーエマルジョンを主剤に混合
して製造した接着剤を介して打ち込む。(A) A peripheral wall of a concrete pier main body is surrounded by a concrete reinforcing wall in which reinforcing reinforcing bars are embedded,
The concrete reinforcing wall is integrally bonded to the peripheral wall of the pier main body with an adhesive produced by mixing the composite polymer emulsion with the main agent, and the anchor portion of the reinforcing bar is
The composite polymer emulsion is mixed into the main body of the pier via an adhesive produced by mixing the base polymer.
【0015】(ロ)コンクリート製の橋脚本体の周壁
を、複合ポリマーエマルジョンを主剤に混合して製造す
るとともに、内部に補強鉄筋を埋設した補強ライニング
層によって被覆した。(B) The peripheral wall of the concrete pier main body was manufactured by mixing the composite polymer emulsion with the main component and was covered with a reinforcing lining layer having reinforcing bars embedded therein.
【0016】(ハ)上記補強鉄筋を、複数の長尺の主筋
と、同主筋に巻付けた螺旋状の帯筋とから形成した。(C) The reinforcing reinforcing bar is formed of a plurality of long main bars and a spiral band wound around the main bars.
【0017】(ニ)コンクリート製の橋脚本体の周壁
を、コンクリートないしモルタルに複合ポリマーエマル
ジョンを混合して製造した弾性ライニング層で被覆し
た。(D) A peripheral wall of a concrete pier main body was covered with an elastic lining layer produced by mixing concrete or mortar with a composite polymer emulsion.
【0018】[0018]
【発明の実施の形態】以下、本発明の実施の形態を、第
1〜第5実施例まで図面に基づいて具体的に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings from the first to fifth embodiments.
【0019】(第1実施例)本実施例に係る橋脚構造
は、既存のコンクリート製の橋脚本体に鋼板からなる補
強筒体を一体的に接着した鋼板巻立構造としている。(First Embodiment) The pier structure according to the present embodiment is a steel plate winding structure in which a reinforcing cylinder made of a steel plate is integrally bonded to an existing concrete pier main body.
【0020】すなわち、図1において10は橋脚であり、
同橋脚10は、既存の橋脚本体1の周壁を、鋼板からなる
補強筒体2で囲繞し、同橋脚本体1の周壁と補強筒体2
との間の環状空間に接着剤Aを充填し、橋脚本体1に補
強筒体2を一体的に接着して構成したものである。That is, in FIG. 1, 10 is a pier,
In the pier 10, the peripheral wall of the existing pier main body 1 is surrounded by a reinforcing cylinder 2 made of a steel plate, and the peripheral wall of the pier main body 1 and the reinforcing cylinder 2 are surrounded.
The annular space between and is filled with the adhesive A, and the reinforcing cylinder 2 is integrally bonded to the pier main body 1.
【0021】上記接着剤Aは、複合ポリマーエマルジョ
ンを主剤に混合して製造したものであり、強力な接着力
を有し、コンクリート製の橋脚本体1に鋼板からなる補
強筒体2を確実に接着して一体化することができる。The above-mentioned adhesive A is produced by mixing the composite polymer emulsion with the main agent, has a strong adhesive force, and securely adheres the reinforcing cylinder 2 made of steel plate to the concrete pier main body 1. Can be integrated.
【0022】しかも、弾力性を有するので、地震などに
よる大きな力を受けた場合に、コンクリートや鋼板の変
形に追随することができる特性がある。Moreover, since it has elasticity, it has the characteristic that it can follow the deformation of concrete or steel plate when it receives a large force such as an earthquake.
【0023】したがって、橋脚10に柔軟性と靱性を付与
することができ、例えば、橋脚10に力が加わった場合、
ある力までは弾性変形してひび割れ等を防止し、それ以
上の大きな力が加われば塑性変形に移行するが、靱性が
高いので、図2に示すように耐力が一定値より下がらず
に変形を大きく取ることができ、より大きな力を吸収す
ることができ、橋脚10が崩壊することを防止できる。Therefore, flexibility and toughness can be imparted to the pier 10. For example, when a force is applied to the pier 10,
Up to a certain force, it elastically deforms to prevent cracking, and if a larger force is applied, it shifts to plastic deformation, but since it has high toughness, as shown in Fig. 2, the proof stress does not fall below a certain value. It can be taken large, can absorb a larger force, and can prevent the pier 10 from collapsing.
【0024】ここで、複合ポリマーエマルジョンを主剤
に混合して製造した接着剤Aを具体的に説明する。Here, the adhesive A produced by mixing the composite polymer emulsion with the main component will be specifically described.
【0025】複合ポリマーエマルジョンとは、例えば、
特開昭58-149961 号や特開昭60-2386503号において開示
したものがあり、以下の成分構成を有するものである。The complex polymer emulsion is, for example,
There are those disclosed in JP-A-58-149961 and JP-A-60-2386503, which have the following component constitutions.
【0026】 また、上記複合ポリマーエマルジョンが混合される主剤
としては、具体的には砂とモルタルを主としており、以
下の構成を有するものとしている。[0026] Further, as the main agent with which the above-mentioned composite polymer emulsion is mixed, specifically, sand and mortar are mainly used, and it has the following constitution.
【0027】 なお、上記複合ポリマーエマルジョンと主剤との混合割
合としては、1:3〜10とするのが好ましい。[0027] The mixing ratio of the composite polymer emulsion and the main agent is preferably 1: 3-10.
【0028】また、上記接着剤Aは、防錆剤としても有
効であり、そこで、本実施例では、鋼板からなる補強筒
体2の表面に、かかる複合ポリマーエマルジョンを主剤
に混合して製造した接着剤Aを表面塗装剤として塗布し
て、鋼板からなる補強筒体2の腐食を確実に防止してい
る。Further, the adhesive A is also effective as a rust preventive agent, and therefore, in this embodiment, the composite polymer emulsion is mixed with the main component on the surface of the reinforcing cylinder 2 made of a steel plate. Adhesive A is applied as a surface coating agent to reliably prevent corrosion of the reinforcing cylinder 2 made of a steel plate.
【0029】なお、防錆効果を高めるために、主剤の成
分中、酸化珪砂の一部または全部を腐食に強いセラミッ
ク粉に置換してもよい。さらに、本接着材Aは、顔料と
のなじみがよく着色自由であり、美観を高めるために、
接着剤A中に顔料を添加することも、また、接着材Aの
上から塗料を塗布することもできる。In order to enhance the rust prevention effect, part or all of the silica sand in the main component may be replaced with a ceramic powder resistant to corrosion. Further, the adhesive A is well compatible with pigments and can be freely colored, and in order to enhance the appearance,
A pigment can be added to the adhesive A, or a paint can be applied on the adhesive A.
【0030】このように、コンクリート製の橋脚本体1
の周壁を、鋼板からなる補強筒体2で囲繞し、同橋脚本
体1の周壁と補強筒体2との間の環状空間に、複合ポリ
マーエマルジョンを主剤に混合して製造した接着剤Aを
充填し、橋脚本体1に補強筒体2を一体的に接着して、
橋脚10に柔軟性と靱性とを付与し、大きな地震等により
加わる力を受け流せる構造として、ひび割れから崩壊に
至るまでを防止している。In this way, the concrete pier main body 1
The peripheral wall of is surrounded by a reinforcing cylinder 2 made of a steel plate, and the annular space between the peripheral wall of the pier main body 1 and the reinforcing cylinder 2 is filled with an adhesive A produced by mixing a composite polymer emulsion with a main agent. Then, the reinforcing cylinder 2 is integrally bonded to the pier body 1,
Flexibility and toughness are added to the pier 10 to prevent the force applied by a large earthquake or the like from cracking to collapse.
【0031】また、本発明に係る接着剤は、カルボキシ
変性スチレンブタジエン、メタクリル酸シクロヘキシ
ル、メタノール、脂肪酸ソーダ石鹸、水を構成成分とす
る複合ポリマーエマルジョンを、白色セメント、珪砂、
鉄粉、亜鉛華、チタン白を構成成分とする主剤に混合し
て製造しており、弾力性、接着性、防水性、防錆性に優
れたものであり、コンクリートや鉄筋等の変形に追随で
き、橋脚10の耐震補強に好適に用いることができる。Further, the adhesive according to the present invention is a carboxy-modified styrene butadiene, cyclohexyl methacrylate, methanol, fatty acid soda soap, a composite polymer emulsion containing water as a constituent, white cement, silica sand,
Manufactured by mixing with iron powder, zinc white, and titanium white as the main components, which are excellent in elasticity, adhesiveness, waterproofness, and rust resistance, and follow the deformation of concrete, rebar, etc. Therefore, it can be suitably used for seismic reinforcement of the pier 10.
【0032】(第2実施例)ここでは、既存のコンクリ
ート製の橋脚本体にコンクリート補強壁を接着剤を介し
て一体的に接着したコンクリート巻立構造としている。(Second Embodiment) Here, a concrete winding structure is constructed by integrally adhering a concrete reinforcing wall to an existing concrete pier main body with an adhesive.
【0033】すなわち、図3に示すように、既存のコン
クリート製の橋脚本体1の周壁を、補強鉄筋4を埋設し
たコンクリート補強壁5で囲繞し、同コンクリート補強
壁5を橋脚本体1の周壁に第一実施例で説明した接着剤
Aによって一体的に接着するとともに、補強鉄筋4の水
平アンカー部41と垂直アンカー部42とを、橋脚本体1内
に、前記接着剤Aを介して打ち込んだ構成としたもので
ある。That is, as shown in FIG. 3, the peripheral wall of the existing concrete pier main body 1 is surrounded by the concrete reinforcing wall 5 in which the reinforcing bars 4 are embedded, and the concrete reinforcing wall 5 is attached to the peripheral wall of the pier main body 1. A structure in which the horizontal anchor portion 41 and the vertical anchor portion 42 of the reinforcing bar 4 are driven into the pier main body 1 via the adhesive A while being integrally bonded with the adhesive A described in the first embodiment. It is what
【0034】また、補強鉄筋4にも予め接着剤Aを塗布
してコンクリート補強壁5内に埋設したものとし、補強
鉄筋4の腐食を防止するとともに、同補強鉄筋4とコン
クリートとの付着性能を向上させ、かつ、引張耐力及び
曲げ耐力を増強している。The reinforcing bar 4 is also preliminarily coated with the adhesive A and embedded in the concrete reinforcing wall 5 to prevent corrosion of the reinforcing bar 4 and to improve the adhesion performance between the reinforcing bar 4 and concrete. It also improves tensile strength and bending strength.
【0035】また、水平アンカー部41は橋脚本体1の脚
部中途に水平方向に、垂直アンカー部42は橋脚本体1の
基礎部1aに垂直方向へ、いずれも、接着剤Aを介して打
ち込んでいる。Further, the horizontal anchor portion 41 is driven horizontally in the middle of the leg portion of the pier main body 1, and the vertical anchor portion 42 is driven vertically to the base portion 1a of the pier main body 1 through the adhesive A. There is.
【0036】接着剤Aの強力な接着力により、両アンカ
ー部41,42 はしっかりと固定されるのでコンクリート補
強壁5は橋脚本体1に確実に一体化されて、しかも、接
着剤Aは弾力性を有するので、地震などによる大きな力
を受けた場合に、コンクリートや鋼板の変形に追随する
ことができ、橋脚10に柔軟性と靱性を付与することがで
きる。したがって、補強鉄筋4の量を格別に増加させる
ことなく橋脚10のひび割れや崩壊を防止できる。Since the anchors 41, 42 are firmly fixed by the strong adhesive force of the adhesive A, the concrete reinforcing wall 5 is surely integrated with the pier main body 1, and the adhesive A is elastic. Therefore, when a large force such as an earthquake is applied, the deformation of concrete or steel plate can be followed, and the pier 10 can be provided with flexibility and toughness. Therefore, it is possible to prevent the pier 10 from cracking or collapsing without increasing the amount of the reinforcing bars 4 significantly.
【0037】(第3実施例)図4に示したものは、コン
クリート製の橋脚本体1の周壁を、複合ポリマーエマル
ジョンを主剤に混合して製造するとともに、内部に補強
鉄筋6を埋設した補強ライニング層Bによって被覆した
増厚補強構造としている。61は長尺の複数の主筋、62は
同主筋61の長手方向に、一定の間隔をあけて取付けたリ
ング状の帯筋である。(Third Embodiment) The one shown in FIG. 4 is a reinforcing lining in which a peripheral wall of a concrete pier main body 1 is manufactured by mixing a composite polymer emulsion with a main agent, and reinforcing reinforcing bars 6 are embedded therein. The thickened reinforcing structure is covered with the layer B. Reference numeral 61 is a plurality of long main bars, and 62 is a ring-shaped bar that is attached in the longitudinal direction of the main bars 61 at regular intervals.
【0038】すなわち、補強ライニング層Bは、先の第
1、第2実施例で説明した接着剤A中に補強鉄筋6を埋
設したものである。なお、補強ライニング層B中に、炭
素繊維、ガラス繊維、アラミド樹脂繊維等の補強繊維を
混和させて強度を増大させることもできる。That is, the reinforcing lining layer B is obtained by embedding the reinforcing reinforcing bar 6 in the adhesive A described in the first and second embodiments. The reinforcing lining layer B may be mixed with reinforcing fibers such as carbon fibers, glass fibers and aramid resin fibers to increase the strength.
【0039】本実施例は、先の第2実施例のようにコン
クリート巻立構造と異なり、型枠を組む必要がないので
作業に手間が掛からず迅速に行え、しかも、橋脚本体1
周りの厚みがはるかに薄く、死荷重増加が少なくなると
ともに、基礎部1aのフーチング拡大がなく、当然なが
ら、拡大部に必要な増杭20も不要となるので、効率的な
耐震補強となる。Unlike the concrete hoisting structure as in the second embodiment, the present embodiment does not require a frame to be assembled, so that the work can be carried out quickly without any trouble and the pier body 1
The surrounding thickness is much smaller, the increase in dead load is reduced, the footing of the foundation 1a is not expanded, and naturally, the additional piles 20 required in the expanded part are not necessary, so that efficient seismic reinforcement is achieved.
【0040】(第4実施例)第4の実施例として、図5
(a)(b)に示したものを説明する。(Fourth Embodiment) As a fourth embodiment, FIG.
What is shown in (a) and (b) will be described.
【0041】これは、先の第3の実施例における補強鉄
筋6を、複数の長尺の主筋6aと、同主筋6aに巻付けた螺
旋状の帯筋6bとから形成したものであり、図5(a) は、
これを円柱状の橋脚本体1に、図5(b) は角柱状の橋脚
本体1に適用した場合を示している。This is one in which the reinforcing bar 6 in the third embodiment is formed from a plurality of long main bars 6a and a spiral band 6b wound around the main bars 6a. 5 (a) is
This is applied to the column-shaped pier body 1 and FIG. 5B shows the case applied to the prism-shaped pier body 1.
【0042】このように、帯筋6bを螺旋状にしたもの
は、橋脚本体1が円柱状であっても、角柱状であっても
補強鉄筋6の連続性が高まるので靱性が向上し、橋脚10
自体を座屈や圧潰に対する強度を増すことができる。As described above, in the case where the piers 6b are formed in a spiral shape, the toughness is improved because the continuity of the reinforcing bar 6 is increased regardless of whether the pier main body 1 is cylindrical or prismatic. Ten
It can increase its strength against buckling and crushing.
【0043】(第5実施例)図6に第5実施例としての
橋脚構造を示している。(Fifth Embodiment) FIG. 6 shows a pier structure as a fifth embodiment.
【0044】これは、既存のコンクリート製の橋脚本体
1の周壁を、コンクリートないしモルタルに複合ポリマ
ーエマルジョンを混合して製造した弾性ライニング層C
で被覆した弾性コンクリート巻立構造としている。This is an elastic lining layer C produced by mixing the peripheral wall of the existing concrete pier body 1 with concrete or mortar mixed with a composite polymer emulsion.
It has an elastic concrete winding structure covered with.
【0045】弾性ライニング層Cは、第1実施例で示し
た複合ポリマーエマルジョンを主剤に混合したものでよ
いが、本実施例においては主剤に砂利等の骨材を加えた
ものとしている。The elastic lining layer C may be a mixture of the main component with the composite polymer emulsion shown in the first embodiment, but in the present embodiment, an aggregate such as gravel is added to the main component.
【0046】かかる弾性ライニング層Cは透水性が小さ
く、雨等により水が橋脚本体1まで浸入してライニング
層Cが剥離したりすることがない。The elastic lining layer C has a low water permeability, so that the lining layer C will not be peeled off due to water entering the pier body 1 due to rain or the like.
【0047】また、第1〜第4実施例で説明してきたよ
うに、柔軟性と靱性が高いので、復元力が大きく、ひび
割れ等を確実に防止することができるとともに、地震等
による大きな力が加わっても橋脚10の崩壊を防止するこ
とができるので耐震補強に好適である。しかも、補強鉄
筋も不要とすることができる。Further, as described in the first to fourth embodiments, since the flexibility and toughness are high, the restoring force is large, cracks and the like can be surely prevented, and a large force due to an earthquake or the like is generated. Even if added, it can prevent the pier 10 from collapsing, which is suitable for seismic reinforcement. Moreover, the reinforcing bar can be eliminated.
【0048】また、本弾性ライニング層Cは、普通のコ
ンクリートに比べ、特に横揺れに強いという特徴があ
る。Further, the elastic lining layer C is characterized in that it is particularly resistant to rolling compared to ordinary concrete.
【0049】ところで、上記各実施例では、本発明の橋
脚構造を既存の橋脚本体1に鋼板からなる補強筒体2や
補強鉄筋を埋設したコンクリート補強壁5を接着した構
造、及び、内部に補強鉄筋を埋設した補強ライニング層
Bや弾性ライニング層を被覆した構造で説明したが、新
規に橋脚を構築する場合に、橋脚本体1自体を、コンク
リートに複合ポリマーエマルジョンを混合して製造した
弾性コンクリートで構築すれば、柔軟性と靱性を有し、
耐地震力の大きな橋脚10を構築することができ、補強が
不要となる。By the way, in each of the above-mentioned embodiments, the bridge pier structure of the present invention has a structure in which the existing tubular pier main body 1 is bonded to the reinforcing tubular body 2 made of steel plate and the concrete reinforcing wall 5 in which reinforcing reinforcing bars are embedded, and the inside is reinforced. The structure in which the reinforcing lining layer B in which the reinforcing bars are embedded and the elastic lining layer are covered has been described. Once built, it has flexibility and toughness,
It is possible to construct a bridge pier 10 with high earthquake resistance, and no reinforcement is required.
【0050】[0050]
【発明の効果】以上説明してきたように、本発明では、
複合ポリマーエマルジョンを主剤に混合して製造した接
着剤を介して、鋼板からなる補強筒体やコンクリート補
強壁を橋脚本体の周壁に強力に接着したので、橋脚に柔
軟性、靱性を付与することができ、コンクリートや鋼板
の変形に追随することができるので、例えば、橋脚に力
が加わった場合、ある力までは弾性変形してひび割れ等
を防止し、それ以上の大きな力が加われば塑性変形に移
行するが、靱性が高いので耐力が一定値より下がらずに
変形を大きく取ることができ、より大きな力を吸収する
ことができ、橋脚の崩壊を防止することができる。As described above, according to the present invention,
Since the reinforcing cylinder made of steel plate and the concrete reinforcing wall are strongly adhered to the peripheral wall of the pier main body through the adhesive produced by mixing the composite polymer emulsion with the main agent, it is possible to add flexibility and toughness to the pier. Since it is possible to follow the deformation of concrete or steel plate, for example, when a force is applied to the pier, it will elastically deform up to a certain force to prevent cracks, and if a larger force is applied, it will be plastically deformed. Although it shifts, since the toughness is high, it is possible to take large deformation without lowering the yield strength below a certain value, absorb a larger force, and prevent collapse of the pier.
【0051】また、複合ポリマーエマルジョンを主剤に
混合して製造した補強ライニング材で橋脚本体の周壁を
被覆すれば、コンクリートの型枠を組む必要がないので
施工性が向上するとともに、補強鉄筋の量が少なくても
十分な耐震効果を得ることができる。しかも、形状によ
る制約がない。Further, if the peripheral wall of the pier main body is covered with a reinforcing lining material prepared by mixing the composite polymer emulsion with the main component, the workability is improved because it is not necessary to form a concrete formwork, and the amount of reinforcing bars is increased. Even if there is little, it is possible to obtain sufficient seismic resistance. Moreover, there is no restriction due to the shape.
【0052】また、上記補強鉄筋を、複数の長尺の主筋
と、同主筋に巻付けた螺旋状の帯筋とから形成すれば、
連続性が高まるので靱性が向上し、橋脚本体自体を座屈
や圧潰に対する強度を増すことができる。Further, if the reinforcing reinforcing bar is formed from a plurality of long main bars and a spiral band around the main bars,
Since the continuity is improved, the toughness is improved, and the strength of the pier itself against buckling and crushing can be increased.
【0053】さらに、複合ポリマーエマルジョンをコン
クリートないしモルタルに混合して製造した弾性ランニ
ング材で橋脚本体の周壁を被覆することにより、補強鉄
筋を不要とすることができる。Further, by covering the peripheral wall of the pier main body with the elastic running material produced by mixing the composite polymer emulsion with concrete or mortar, the reinforcing bar can be eliminated.
【図1】第1実施例に係る橋脚構造を示す説明図であ
る。FIG. 1 is an explanatory view showing a pier structure according to a first embodiment.
【図2】本発明に係る橋脚構造の耐力を示すグラフであ
る。FIG. 2 is a graph showing the proof stress of the pier structure according to the present invention.
【図3】第2実施例に係る橋脚構造を示す説明図であ
る。FIG. 3 is an explanatory view showing a pier structure according to a second embodiment.
【図4】第3実施例に係る橋脚構造を示す説明図であ
る。FIG. 4 is an explanatory view showing a pier structure according to a third embodiment.
【図5】第4実施例に係る橋脚構造を示す説明図であ
る。FIG. 5 is an explanatory view showing a pier structure according to a fourth embodiment.
【図6】第5実施例に係る橋脚構造を示す説明図であ
る。FIG. 6 is an explanatory view showing a pier structure according to a fifth embodiment.
【符号の説明】 1 橋脚本体 2 補強筒体 4 補強鉄筋 5 コンクリート補強壁 6 補強鉄筋 6a 主筋 6b 帯筋 10 橋脚 A 接着剤[Explanation of symbols] 1 Pier main body 2 Reinforcement cylinder 4 Reinforcement bar 5 Concrete reinforcement wall 6 Reinforcement bar 6a Main bar 6b Belt bar 10 Bridge pier A Adhesive
Claims (5)
を、鋼板からなる補強筒体(2) で囲繞し、同橋脚本体
(1) の周壁と補強筒体(2) との間の環状空間に、複合ポ
リマーエマルジョンを主剤に混合して製造した接着剤
(A) を充填し、橋脚本体(1) に補強筒体(2) を一体的に
接着したことを特徴とする橋脚構造。1. A pier main body (1) made of concrete is surrounded by a reinforcing cylinder (2) made of a steel plate.
An adhesive produced by mixing the composite polymer emulsion with the main component in the annular space between the peripheral wall of (1) and the reinforcing cylinder (2).
A pier structure characterized by being filled with (A) and integrally adhering a reinforcing cylinder (2) to the pier body (1).
を、補強鉄筋(4) を埋設したコンクリート補強壁(5) で
囲繞し、同コンクリート補強壁(5) を橋脚本体(1) の周
壁に複合ポリマーエマルジョンを主剤に混合して製造し
た接着剤(A) によって一体的に接着するとともに、補強
鉄筋(4) のアンカー部(41),(42) を、橋脚本体(1) 内
に、複合ポリマーエマルジョンを主剤に混合して製造し
た接着剤(A) を介して打ち込むことを特徴とする橋脚構
造。2. A peripheral wall of a concrete pier main body (1) is surrounded by a concrete reinforcing wall (5) in which reinforcing reinforcing bars (4) are embedded, and the concrete reinforcing wall (5) is surrounded by a peripheral wall of the pier main body (1). In addition to adhering together with the adhesive (A) produced by mixing the composite polymer emulsion with the main agent, the anchor parts (41) and (42) of the reinforcing bar (4) are placed in the pier body (1). A pier structure characterized by being driven through an adhesive (A) prepared by mixing a composite polymer emulsion with the main component.
を、複合ポリマーエマルジョンを主剤に混合して製造す
るとともに、内部に補強鉄筋(6) を埋設した補強ライニ
ング層(B) によって被覆したことを特徴とする橋脚構
造。3. A peripheral wall of a concrete pier main body (1) is manufactured by mixing a composite polymer emulsion with a main agent and is covered with a reinforcing lining layer (B) in which reinforcing reinforcing bars (6) are embedded. Pier structure characterized by.
(6a)と、同主筋(6a)に巻付けた螺旋状の帯筋(6b)とから
形成したことを特徴とする請求項3記載の橋脚構造。4. The reinforcing bar (6) is provided with a plurality of long main bars.
The pier structure according to claim 3, wherein the pier structure is formed from (6a) and a spiral strip (6b) wound around the main bar (6a).
を、コンクリートないしモルタルに複合ポリマーエマル
ジョンを混合して製造した弾性ライニング層(C) で被覆
したことを特徴とする橋脚構造。5. A pier structure, characterized in that the peripheral wall of a concrete pier body (1) is covered with an elastic lining layer (C) produced by mixing concrete or mortar with a composite polymer emulsion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27025595A JP3565957B2 (en) | 1995-06-30 | 1995-10-18 | Bridge pier reinforcement method |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16580495 | 1995-06-30 | ||
JP7-165804 | 1995-06-30 | ||
JP27025595A JP3565957B2 (en) | 1995-06-30 | 1995-10-18 | Bridge pier reinforcement method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0971908A true JPH0971908A (en) | 1997-03-18 |
JP3565957B2 JP3565957B2 (en) | 2004-09-15 |
Family
ID=26490405
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JP27025595A Expired - Fee Related JP3565957B2 (en) | 1995-06-30 | 1995-10-18 | Bridge pier reinforcement method |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003096715A (en) * | 2001-09-26 | 2003-04-03 | Sumitomo Rubber Ind Ltd | Method for reinforcing in-river concrete pier |
JP2014148846A (en) * | 2013-02-01 | 2014-08-21 | East Japan Railway Co | Bridge pier reinforcement structure and bridge pier reinforcement method |
JP2014205989A (en) * | 2013-04-12 | 2014-10-30 | 東日本旅客鉄道株式会社 | Bridge pier reinforcing structure and bridge pier reinforcing method |
CN104532740A (en) * | 2015-01-21 | 2015-04-22 | 宁波大学 | Energy-consuming rebar-attached unbonded post-tensioning prestressed concrete filled double-wall steel tube prefabricated assembly bridge pier |
CN109648768A (en) * | 2018-11-21 | 2019-04-19 | 江苏宣臻防腐工程有限公司 | A kind of steel combination process such as steel lining tetrafluoro cage hoop |
CN113832835A (en) * | 2021-09-07 | 2021-12-24 | 湖北驭水工程建设有限公司 | River channel pier department seepage prevention structure |
-
1995
- 1995-10-18 JP JP27025595A patent/JP3565957B2/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003096715A (en) * | 2001-09-26 | 2003-04-03 | Sumitomo Rubber Ind Ltd | Method for reinforcing in-river concrete pier |
JP2014148846A (en) * | 2013-02-01 | 2014-08-21 | East Japan Railway Co | Bridge pier reinforcement structure and bridge pier reinforcement method |
JP2014205989A (en) * | 2013-04-12 | 2014-10-30 | 東日本旅客鉄道株式会社 | Bridge pier reinforcing structure and bridge pier reinforcing method |
CN104532740A (en) * | 2015-01-21 | 2015-04-22 | 宁波大学 | Energy-consuming rebar-attached unbonded post-tensioning prestressed concrete filled double-wall steel tube prefabricated assembly bridge pier |
CN109648768A (en) * | 2018-11-21 | 2019-04-19 | 江苏宣臻防腐工程有限公司 | A kind of steel combination process such as steel lining tetrafluoro cage hoop |
CN109648768B (en) * | 2018-11-21 | 2024-05-31 | 江苏宣臻防腐工程有限公司 | Steel lining tetrafluoro cage hoop and other steel compounding process |
CN113832835A (en) * | 2021-09-07 | 2021-12-24 | 湖北驭水工程建设有限公司 | River channel pier department seepage prevention structure |
Also Published As
Publication number | Publication date |
---|---|
JP3565957B2 (en) | 2004-09-15 |
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