JP2007126846A - Reinforcing cage, construction method for cast-in-place concrete pile, and cast-in-place concrete pile - Google Patents

Reinforcing cage, construction method for cast-in-place concrete pile, and cast-in-place concrete pile Download PDF

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JP2007126846A
JP2007126846A JP2005319038A JP2005319038A JP2007126846A JP 2007126846 A JP2007126846 A JP 2007126846A JP 2005319038 A JP2005319038 A JP 2005319038A JP 2005319038 A JP2005319038 A JP 2005319038A JP 2007126846 A JP2007126846 A JP 2007126846A
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concrete
pile
slime
cylindrical cover
construction
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Masayuki Tokawa
正之 東川
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Tekken Constr Co Ltd
鉄建建設株式会社
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<P>PROBLEM TO BE SOLVED: To provide a reinforcing cage, a construction method of a cast-in-place concrete pile, and the cast-in-place concrete pile, which are suitable for the construction of narrow railroad facilities with a low restricted space, which can bring about the facilitation of the manufacture of a reinforcing cage, a reduction in weight and the downsizing of a working machine, which can prevent the rapid and safe suspension of the reinforcing cage and sedimentation by slime, which can rationally remove the slime with high accuracy and efficiency, which can bring about the reliability of the construction and stable pile bearing capacity, and which can adapt to the construction of a higher-rise building. <P>SOLUTION: In this reinforcing cage 4 in which a plurality of main reinforcements 5 and a hoop tie 6 are formed in a cage shape, a bottomed tubular cover 7 is provided on the side of one end of the reinforcing cage 4. The main reinforcement 5 and the hoop tie 6 are made of a reinforcement or a carbon fiber. The hoop tie 6, which is obtained by molding a carbon fiber strand, is bonded to the main reinforcement of the carbon fiber strand, and the main reinforcement and the hoop tie are impregnated with an adhesive. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば狭隘で低空頭の鉄道施設の施工に好適で、補強籠の製作の容易化と軽量化並びに作業機の小形化を図れ、補強籠の迅速かつ安全な吊り込みとスライムによる沈降を防止できるとともに、スライムを合理的かつ高精度で効率良く除去し、施工の信頼性と安定した杭耐力を得られ、建物の高層化に応じられる、補強籠および現場打ちコンクリ−ト杭の施工法並びに現場打ちコンクリ−ト杭に関する。   The present invention is suitable for construction of, for example, a narrow and low-headed railway facility, and can facilitate the manufacture and weight reduction of the reinforcement rod and reduce the size of the work machine. The reinforcement rod can be suspended quickly and settled by slime. Reinforcement dredging and on-site concrete pile construction that can eliminate the slime with reasonable, high accuracy and efficiency, obtain construction reliability and stable pile strength, and respond to higher building heights Law and on-site concrete piles.
例えばホ−ム上または線路間の狭隘で低空頭の鉄道施設に現場打ちコンクリ−ト杭を施工する場合、線閉下の限られた時間帯での作業となるため、小形作業機を利用した迅速かつ安全な施工が要請される。
また、構築される建物の高層化の要請から、杭のスパンが大きく、したがって杭一本当りの耐力が大きくなる傾向にある。
For example, when constructing on-site concrete piles in a narrow and low-headed railway facility on a home or between tracks, a small work machine was used because the work was performed in a limited time zone when the line was closed. Rapid and safe construction is required.
In addition, due to the demand for higher-rise buildings, the span of piles is large, and therefore the yield strength per pile tends to increase.
このような要請に対し、従来の現場打ちコンクリ−ト杭の施工法として、BH工法とTBH工法とがある。
このうち、BH工法は、ボ−リングマシンを使用し、ボ−リングロッドの先端にビットを取り付けて回転させ、ケ−シングなしで掘削する方法で、掘削に安定液を使用し、掘削した土砂を上昇水流によって孔口に運び、サンドポンプで排出する正循環方式を採用し、施工機械が小形で、狭小な敷地での施工できる利点がある。
In response to such a request, there are a BH method and a TBH method as a conventional method of constructing a concrete pile on site.
Of these, the BH method uses a boring machine, attaches a bit to the tip of the boring rod, rotates it, and excavates without casing. Adopting a regular circulation system that transports the water to the hole mouth by the rising water flow and discharges it with a sand pump, the construction machine is small and has the advantage of being able to work on a small site.
しかし、BH工法は安定液に排土を浮遊させて孔口から排出するため、孔壁にマッドケ−キが形成され易く、したがって杭耐力の形成に必要な安定した杭周面摩擦力を得られず、またスライムの沈降が大きい傾向があって、安定した杭耐力や施工の信頼性を得られという問題がある。   However, the BH method floats the soil in a stable liquid and discharges it from the hole mouth, so that mud cake is easily formed on the hole wall, and therefore the stable pile peripheral surface friction force necessary for the formation of pile strength can be obtained. In addition, there is a tendency that the sedimentation of the slime tends to be large, and stable pile strength and construction reliability can be obtained.
また、TBH工法は、BH工法と反対の逆循環による排土方法を採用し、狭小、低空間の施工条件下で大口径掘削を行なえ、マッドケ−キやスライムの発生を低減できる利点があるが、施工機械が大きく狭隘な空間での施工が難しいという問題がある。   In addition, the TBH method has the advantage of adopting a reverse-carrying soil removal method opposite to the BH method, enabling large-diameter excavation under narrow and low space construction conditions, and reducing the occurrence of mud cake and slime. There is a problem that it is difficult to construct in a confined space where the construction machine is large.
しかも、低空頭下での施工には、杭の外周に大重量の補強鋼管の挿入や杭配筋の接続が数多く発生し、補強鋼管の挿入はジョイント溶接、杭配筋では主筋ジョイント代が増えて作業が煩雑かつ手間が掛かり、前記線閉下での施工に対応することが難しく、予てより代替工法の開発が望まれていた。   In addition, for construction under low heads, many heavy steel reinforcement pipes and pile reinforcement connections are generated on the outer periphery of the pile, and insertion of reinforcement steel pipes increases joint welding and main reinforcement joint costs for pile reinforcement. Therefore, the work is complicated and time-consuming, and it is difficult to cope with the construction with the line closed, and the development of an alternative construction method has been desired in advance.
このような要請に応じられる現場打ちコンクリ−ト杭の施工法として、鉄筋籠に予め注入管と排出管とを取り付け、該鉄筋籠を杭孔内に吊り込み、それらの下端をスライム層の底部に挿入して、注入管からセメントミルク等の注入材を圧送し、排出管からスライムを外部へ排出する施工法がある(例えば、特許文献1参照)。   As a construction method for on-site concrete piles that meet such demands, an injection pipe and a discharge pipe are attached in advance to the reinforcing bar, and the reinforcing bar is suspended in the pile hole, and their lower ends are placed at the bottom of the slime layer. There is a construction method in which an injection material such as cement milk is inserted from the injection pipe and pumped, and slime is discharged from the discharge pipe to the outside (see, for example, Patent Document 1).
しかし、前記施工法はスライムに注入材を混入して、スライムを徐々に注入材に置き換えるため、スライムの排出に時間が掛かり、またスライムに混じってコンクリ−トや注入材が排出されるため、その空費とスライムの排出効率の低下が指摘されていた。   However, since the construction method mixes the injection material into the slime and gradually replaces the slime with the injection material, it takes time to discharge the slime, and because the concrete and the injection material are discharged mixed with the slime, It was pointed out that the waste cost and slime discharge efficiency declined.
また、他の施工法として、鉄筋籠の下端に笊状のプレロ−ド付与部を取り付け、該鉄筋籠を杭孔内に吊り込み、プレロ−ド付与部の注入袋体に注入材を注入して膨張させ、これを杭底のスライム部に載置させた後、杭孔内にコンクリ−トを打設し、該コンクリ−トが所定強度に硬化した際、前記注入袋体に注入材を注入して杭底を押圧し、杭底地盤の支持力を増強するとともに、杭沈下量を低減する施工法がある(例えば、特許文献2参照)。   As another construction method, a hook-shaped preloading part is attached to the lower end of the reinforcing bar, the reinforcing bar is suspended in the pile hole, and an injection material is injected into the injection bag body of the preloading part. After inflating and placing it on the slime part of the pile bottom, a concrete is placed in the pile hole, and when the concrete is hardened to a predetermined strength, an injection material is applied to the injection bag body. There is a construction method for injecting and pressing the pile bottom to increase the bearing capacity of the pile bottom ground and to reduce the amount of pile settlement (for example, see Patent Document 2).
しかし、前記施工法は、スライムを含む安定液とコンクリ−トとの比重差を利用して前記安定液をコンクリ−トに置き替え、スライムを排出するため、コンクリ−トの完全な置き替わりやスライムの完全な除去を確認できず、スライムがコンクリ−トに混ざって、コンクリ−杭の品質や強度の低下を招き、またスライムによる沈降が増大して、施工の信頼性を得難い等の問題があった。   However, the construction method uses the difference in specific gravity between the stabilizing liquid containing slime and the concrete to replace the stabilizing liquid with the concrete and discharge the slime. Complete removal of slime could not be confirmed, and slime was mixed with concrete, resulting in a decrease in quality and strength of concrete piles, and sedimentation due to slime increased, making it difficult to obtain construction reliability. there were.
また、これらの施工に使用される鉄筋籠は、長尺の主筋にフ−プ材を溶接して製作しているため、大形かつ大重量化し、その製作や搬送、杭孔内への吊り込みが大掛かりになるという問題があった。   In addition, the rebar rods used in these constructions are manufactured by welding the hood material to the long main bars, so they are large and heavy, and are manufactured and transported and suspended in pile holes. There was a problem that the inclusion was large.
このような問題を解決する鉄筋籠として、複数の鉄筋籠ユニットを軸方向に伸縮可能に連結し、鉄筋籠ユニットの長さを短縮化して、主筋の長さを短小化した鉄筋籠がある(例えば、特許文献3参照)。   As a reinforcing bar rod that solves such a problem, there is a reinforcing rod rod in which a plurality of reinforcing rod rod units are connected to be extendable in the axial direction, the length of the reinforcing rod rod unit is shortened, and the length of the main bar is shortened ( For example, see Patent Document 3).
しかし、前記鉄筋籠ユニットは幅広かつ重いフ−プ鋼と、二つのフ−プ鋼を連結する主筋とを要し、該主筋をフ−プ鋼の幅の略二倍分ラップして構成しているため、その分主筋が長尺かつ重量化し、鉄筋籠の重量化を助長するとともに、主筋の連結手段として、主筋の両端部を折り曲げ、これをフ−プ鋼に設けた折り曲げ金具に摺動可能に連結するため、部品点数が多く、それらの製作や組付けに手間が掛かるという問題があった。   However, the reinforcing bar unit requires a wide and heavy FOUP steel and a main bar connecting the two FOOP steels, and the main bar is formed by wrapping approximately twice the width of the FOOP steel. As a result, the main bars become longer and heavier, helping to increase the weight of the rebar, and as a means for connecting the main bars, both ends of the main bars are bent and slid onto the bending metal fittings on the hood steel. Since they are connected in a movable manner, the number of parts is large, and there is a problem that it takes time and effort to produce and assemble them.
特許第3615073号公報Japanese Patent No. 3615073 特許第3688546号公報Japanese Patent No. 3688546 特開平8−105043号公報JP-A-8-105043
本発明はこのような問題を解決し、例えば狭隘で低空頭の鉄道施設の施工に好適で、補強籠の製作の容易化と軽量化並びに作業機の小形化を図れ、補強籠の迅速かつ安全な吊り込みとスライムによる沈降を防止できるとともに、スライムを合理的かつ高精度で効率良く除去し、施工の信頼性と安定した杭耐力を得られ、建物の高層化に応じられる、補強籠および現場打ちコンクリ−ト杭の施工法並びに現場打ちコンクリ−ト杭を提供することを目的とする。   The present invention solves such problems, and is suitable for construction of, for example, a narrow and low-headed railway facility. The reinforcement rod can be easily manufactured and reduced in weight, and the working machine can be reduced in size. Reinforcement dredging and on-site construction that can prevent sluging and settling due to slime, and can remove slime rationally, with high accuracy and efficiency, provide construction reliability and stable pile strength, and respond to high-rise buildings The purpose is to provide a method for constructing hammered concrete piles and on-site concrete piles.
請求項1の発明は、複数の主筋とフ−プ筋とを籠状に形成した補強籠において、前記補強籠の一端部側に有底の筒状カバ−を設け、補強籠を杭孔に安定して収容するとともに、筒状カバ−を杭孔の底部に滞留するスライムに没入させ、スライムを効率良く、かつ高精度に除去し得るようにしている。
請求項2の発明は、前記主筋とフ−プ筋とを鉄筋または炭素繊維製とし、鉄筋製の場合は在来の手法で容易かつ安価に製作でき、また炭素繊維製の場合は鉄筋籠と同程度の強度を得られ、その軽量化によって杭孔への吊り込み作業の容易化と、作業機の小形化を図れ、しかも鉄筋のような腐食の心配を払拭し得るようにしている。
According to the first aspect of the present invention, there is provided a reinforcing rod in which a plurality of main reinforcing bars and oops are formed in a hook shape, a bottomed cylindrical cover is provided on one end side of the reinforcing rod, and the reinforcing rod is used as a pile hole. While accommodating stably, a cylindrical cover is immersed in the slime which stays in the bottom part of a pile hole, and slime can be removed efficiently and highly accurately.
In the invention of claim 2, the main bar and the hoop are made of reinforcing bar or carbon fiber, and can be easily and inexpensively manufactured by a conventional method in the case of a reinforcing bar, and in the case of carbon fiber, The same level of strength can be obtained, and the weight reduction makes it easier to hang the pile hole and reduce the size of the work equipment, and also eliminates the worry of corrosion like rebar.
請求項3の発明は、炭素繊維製ストランドの主筋に炭素繊維製ストランドを成形したフ−プ筋を接着し、前記主筋とフ−プ筋に接着剤を含浸して、鉄筋のような煩雑な溶接作業を要せず、また前記主筋とフ−プ筋に接着剤を含浸させて、前記主筋とフ−プ筋の強度を容易に得られ、鉄筋籠に比べ製作の容易化を図れるようにしている。
請求項4の発明は、前記筒状カバ−の底部を削孔の底部と係合可能に形成し、補強籠を削孔の底部に安定して収容するとともに、削孔の底部に滞留するスライムを高精度かつ効率良く除去し得るようにしている。
The invention according to claim 3 is such that a reinforced bar formed with a carbon fiber strand is bonded to the main bar of the carbon fiber strand, and an adhesive is impregnated into the main bar and the FO bar, so that it is complicated as a reinforcing bar. No welding work is required, and the main bar and the hoop are impregnated with an adhesive, so that the strength of the main bar and the hoop can be easily obtained. ing.
According to a fourth aspect of the present invention, the bottom of the cylindrical cover is formed to be engageable with the bottom of the drilling hole, and the reinforcing rod is stably accommodated in the bottom of the drilling hole, and the slime stays in the bottom of the drilling hole. Can be removed with high accuracy and efficiency.
請求項5の発明は、地盤を掘削した杭孔に補強籠を吊り込んでコンクリ−トを打設する現場打ちコンクリ−ト杭の施工方法において、下部側にコンクリ−トを収容可能な有底の筒状カバ−を設けた補強籠を杭孔に吊り込み、前記筒状カバ−を杭孔底部に収容するようにして、スライムの除去後に補強籠を吊り込む従来の施工法に比べ、主に前記筒状カバ−に収容するコンクリ−トの重量を介し、スライムを合理的に高精度かつ効率良く除去し、工期の短縮化と工費の低減を図れるとともに、スライムを高精度に除去することによって、先端の杭耐力を得られ、建物の高層化に応じられる現場打ちコンクリ−ト杭の施工の信頼性を得られるようにしている。
請求項6の発明は、前記筒状カバ−を杭孔底部に滞留するスライムに没入し、該スライムを前記筒状カバ−の外側へ押し退けるようにして、スライムを高精度かつ効率良く除去し得るようにしている。
The invention according to claim 5 is a construction method of a concrete pile pile which hangs a reinforcing rod in a pile hole excavated in the ground and places a concrete, and has a bottom which can accommodate the concrete on the lower side. Compared to the conventional construction method in which a reinforcing rod provided with a cylindrical cover is suspended in the pile hole and the cylindrical cover is accommodated in the bottom of the pile hole, and the reinforcing rod is suspended after removing the slime. In addition, the slime can be removed reasonably with high accuracy and efficiency through the weight of the concrete accommodated in the cylindrical cover, the work period can be shortened and the construction cost can be reduced, and the slime can be removed with high accuracy. Thus, the pile pile strength at the tip can be obtained, and the reliability of construction of on-site concrete piles that can be adapted to higher building heights can be obtained.
In the invention of claim 6, the cylindrical cover can be immersed in a slime staying at the bottom of the pile hole, and the slime can be pushed out to the outside of the cylindrical cover so that the slime can be removed with high accuracy and efficiency. I am doing so.
請求項7の発明は、前記補強籠を杭孔内に吊り込み後、該補強籠にコンクリ−トを打設して筒状カバ−に収容し、該筒状カバ−を杭孔底部に着地させて、筒状カバ−に収容したコンクリ−トの重量を付加し、その分スライムを前記筒状カバ−の外側へ押し退けて、スライムを高精度かつ効率良く除去し得るようにしている。
請求項8の発明は、前記コンクリ−トを筒状カバ−に収容後、前記スライムを杭孔と筒状カバ−との間に押し出し、その狭小域においてスライムの吸引排出を合理的かつ効率良く行なえるようにしている。
According to the invention of claim 7, after the reinforcing rod is suspended in the pile hole, a concrete is placed on the reinforcing rod and accommodated in the cylindrical cover, and the cylindrical cover is landed on the bottom of the pile hole. Thus, the weight of the concrete accommodated in the cylindrical cover is added, and the slime is pushed away to the outside of the cylindrical cover, so that the slime can be removed with high accuracy and efficiency.
In the invention of claim 8, after the concrete is accommodated in the cylindrical cover, the slime is pushed out between the pile hole and the cylindrical cover, and suction and discharge of the slime is rationally and efficiently in the narrow area. I can do it.
請求項9の発明は、前記スライムを筒状カバ−の外側へ押し退け後、該スライムを杭孔の外部へ排出するようにして、スライムを合理的かつ高精度に効率良く除去し、スライムの残留によるコンクリ−ト杭の即時沈下を防止し、施工の信頼性と均質性を得られるようにしている。   The invention of claim 9 is characterized in that the slime is rationally and efficiently removed efficiently by pushing out the slime to the outside of the cylindrical cover and then discharging the slime to the outside of the pile hole. This prevents the concrete piles from subsidizing immediately and makes it possible to obtain construction reliability and homogeneity.
請求項10の発明は、複数の主筋とフ−プ筋とを籠状に形成した補強籠を、杭孔に打設したコンクリ−ト内に配置した現場打ちコンクリ−ト杭において、一端部側に有底の筒状カバ−を設けた補強籠を前記コンクリ−ト内に配置し、前記筒状カバ−をコンクリ−ト杭の下端に配置するとともに、杭孔底部と密着可能に配置して、筒状カバ−の先端部を良好な支持地盤に接触させ、筒状カバ−の先端部におけるコンクリ−トの巻き込みをなくして、現場打ちコンクリ−ト杭の強度と安定性を向上するようにしている。
請求項11の発明は、前記主筋とフ−プ筋とを鉄筋または炭素繊維製とし、施工条件に応じた現場打ちコンクリ−ト杭を選択し得るとともに、特に炭素繊維製の場合は、鉄筋のような腐食の心配がなく、施工当初の品質を長期に亘って保持し得る。
A tenth aspect of the present invention is the in-situ concrete pile in which a reinforcing bar having a plurality of main bars and hap bars formed in a bowl shape is arranged in a concrete placed in a pile hole. A reinforcing rod provided with a bottomed cylindrical cover is arranged in the concrete, and the cylindrical cover is arranged at the lower end of the concrete pile so as to be in close contact with the bottom of the pile hole. The tip of the cylindrical cover is brought into contact with a good support ground, and the entanglement of the concrete at the tip of the cylindrical cover is eliminated to improve the strength and stability of the in-situ concrete pile. ing.
According to the invention of claim 11, the main reinforcing bar and the hoop are made of reinforcing steel or carbon fiber, and an in-situ concrete pile according to construction conditions can be selected. There is no concern about such corrosion, and the initial quality can be maintained for a long time.
請求項1の発明は、補強籠の一端部側に有底の筒状カバ−を設けたから、補強籠を杭孔に安定して収容できるとともに、筒状カバ−を杭孔の底部に滞留するスライムに没入させて、スライムを効率良く、かつ高精度に除去することができる。
請求項2の発明は、前記主筋とフ−プ筋とを鉄筋または炭素繊維製としたから、鉄筋製の場合は在来の手法で容易かつ安価に製作でき、また炭素繊維製の場合は鉄筋籠と同程度の強度を得られ、その軽量化によって杭孔への吊り込み作業の容易化と、作業機の小形化を図れ、しかも鉄筋のような腐食の心配を払拭することができる。
According to the first aspect of the present invention, since the bottomed cylindrical cover is provided on the one end side of the reinforcing rod, the reinforcing rod can be stably accommodated in the pile hole and the cylindrical cover is retained in the bottom portion of the pile hole. The slime can be immersed in the slime and removed efficiently and with high accuracy.
In the invention of claim 2, since the main reinforcing bar and the hoop are made of rebar or carbon fiber, the rebar can be easily and inexpensively manufactured by a conventional method, and if it is made of carbon fiber, the rebar is made. It is possible to obtain the same strength as a coffin and to make it easier to hang it into the pile hole and to reduce the size of the work machine, and to eliminate the worry of corrosion like a reinforcing bar.
請求項3の発明は、炭素繊維製ストランドの主筋に炭素繊維製ストランドを成形したフ−プ筋を接着し、前記主筋とフ−プ筋に接着剤を含浸したから、鉄筋のような煩雑な溶接作業を要せず、また前記主筋とフ−プ筋に接着剤を含浸させて、前記主筋とフ−プ筋に鉄筋と同程度の強度を容易に得られ、鉄筋籠に比べ製作の容易化を図ることができる。
請求項4の発明は、前記筒状カバ−の底部を削孔の底部と係合可能に形成したから、補強籠を削孔の底部に安定して収容できるとともに、削孔の底部に滞留するスライムを高精度かつ効率良く除去することができる。
According to the invention of claim 3, since the reinforced bar formed with the carbon fiber strand is bonded to the main reinforcing bar of the carbon fiber strand, and the main reinforcing bar and the reinforced bar are impregnated with the adhesive, No welding work is required, and the main reinforcing bar and FO bar are impregnated with an adhesive, so that the main bar and the FO bar can easily have the same strength as the reinforcing bar. Can be achieved.
In the invention according to claim 4, since the bottom portion of the cylindrical cover is formed to be engageable with the bottom portion of the drilling hole, the reinforcing rod can be stably stored in the bottom portion of the drilling hole and stays in the bottom portion of the drilling hole. Slime can be removed with high accuracy and efficiency.
請求項5の発明は、下部側にコンクリ−トを収容可能な有底の筒状カバ−を設けた補強籠を杭孔に吊り込み、前記筒状カバ−を杭孔底部に収容するから、スライムの除去後に補強籠を吊り込む従来の施工法に比べ、主に前記筒状カバ−に収容するコンクリ−トの重量を介し、スライムを合理的に高精度かつ効率良く除去し、工期の短縮化と工費の低減を図れるとともに、スライムを高精度に除去することによって、先端の杭耐力を得られ、建物の高層化に応じられる現場打ちコンクリ−ト杭の施工の信頼性を得られる効果がある。
請求項6の発明は、前記筒状カバ−を杭孔底部に滞留するスライムに没入し、該スライムを前記筒状カバ−の外側へ押し退けるから、補強籠の重量を介し、スライムを高精度かつ効率良く除去することができる。
The invention of claim 5 suspends a reinforcing rod provided with a bottomed cylindrical cover capable of accommodating concrete on the lower side in the pile hole, and accommodates the cylindrical cover at the bottom of the pile hole. Compared to the conventional construction method in which a reinforcing rod is suspended after the slime is removed, the slime is removed reasonably accurately and efficiently mainly through the weight of the concrete accommodated in the cylindrical cover, and the construction period is shortened. In addition to reducing the construction cost and reducing the construction cost, it is possible to obtain the pile strength of the tip by removing the slime with high accuracy, and to obtain the reliability of construction of on-site concrete piles that can respond to higher building heights. is there.
In the invention of claim 6, since the cylindrical cover is immersed in the slime staying at the bottom of the pile hole, and the slime is pushed out of the cylindrical cover, the slime is highly accurate through the weight of the reinforcing rod. It can be removed efficiently.
請求項7の発明は、前記補強籠を杭孔内に吊り込み後、該補強籠にコンクリ−トを打設して筒状カバ−に収容し、該筒状カバ−を杭孔底部に着地させるから、筒状カバ−に収容したコンクリ−トの重量を付加して、スライムを前記筒状カバ−の外側へ押し退け、スライムを高精度かつ効率良く除去することができる。
請求項8の発明は、前記コンクリ−トを筒状カバ−に収容後、前記スライムを杭孔と筒状カバ−との間に押し出すから、その狭小域においてスライムの吸引排出を合理的かつ効率良く行なうことができる。
According to the invention of claim 7, after the reinforcing rod is suspended in the pile hole, a concrete is placed on the reinforcing rod and accommodated in the cylindrical cover, and the cylindrical cover is landed on the bottom of the pile hole. Therefore, the weight of the concrete accommodated in the cylindrical cover is added, the slime can be pushed out of the cylindrical cover, and the slime can be removed with high accuracy and efficiency.
In the invention of claim 8, since the slime is pushed out between the pile hole and the cylindrical cover after the concrete is accommodated in the cylindrical cover, suction and discharge of the slime is rational and efficient in the narrow area. Can be done well.
請求項9の発明は、前記スライムを筒状カバ−の外側へ押し退け後、該スライムを杭孔の外部へ排出するから、スライムを合理的かつ高精度に効率良く除去し、スライムの残留によるコンクリ−ト杭の即時沈下を防止し、施工の信頼性と均質性を得られる効果がある   According to the ninth aspect of the present invention, since the slime is pushed out of the cylindrical cover and then discharged to the outside of the pile hole, the slime is efficiently removed efficiently and accurately with a slime residue. -Prevents immediate settlement of toe piles and has the effect of obtaining construction reliability and homogeneity
請求項10の発明は、一端部側に有底の筒状カバ−を設けた補強籠を前記コンクリ−ト内に配置し、前記筒状カバ−をコンクリ−ト杭の下端に配置するとともに、杭孔底部と密着可能に配置したから、筒状カバ−の先端部を良好な支持地盤に接触させ、筒状カバ−の先端部におけるコンクリ−トの巻き込みをなくして、現場打ちコンクリ−ト杭の強度と安定性を向上することができる。
請求項11の発明は、前記主筋とフ−プ筋とを鉄筋または炭素繊維製としたから、施工条件に応じた現場打ちコンクリ−ト杭を選択できるとともに、特に炭素繊維製の場合は、鉄筋のような腐食の心配がなく、施工当初の品質を長期に亘って保持することができる。
In the invention of claim 10, a reinforcing rod having a bottomed cylindrical cover on one end side is arranged in the concrete, and the cylindrical cover is arranged at the lower end of the concrete pile. Since the bottom of the pile hole is arranged in close contact with the bottom of the pile hole, the tip of the cylindrical cover is brought into contact with a good supporting ground, and the concrete is not caught in the tip of the cylindrical cover. Strength and stability can be improved.
In the invention of claim 11, since the main reinforcing bar and the hoop are made of reinforcing steel or carbon fiber, it is possible to select on-site concrete piles according to construction conditions. Therefore, the quality at the beginning of construction can be maintained for a long time.
以下、本発明を狭隘で低空頭の鉄道施設における施工に適用した図示の実施形態について説明すると、図1乃至図4において1は駅ホ−ム下または線路間の地盤で、その所定位置にボ−リングマシン等の掘削機(図示略)で杭孔2が掘削され、該杭孔2の底部に、例えばベントナイトの粒子を混合した液状の安定液と、土屑とが混合したスライム3が滞留しており、該杭孔2に補強籠として鉄筋籠4が適宜な重機(図示略)を介して吊り込まれている。   Hereinafter, the illustrated embodiment in which the present invention is applied to construction in a narrow and low-altitude railway facility will be described. In FIGS. 1 to 4, reference numeral 1 denotes a ground below a station home or between tracks, and is positioned at a predetermined position. A pile hole 2 is excavated by an excavator (not shown) such as a ring machine, and a slime 3 in which a liquid stable liquid mixed with, for example, bentonite particles and soil debris is retained at the bottom of the pile hole 2 A reinforcing bar 4 as a reinforcing bar is suspended in the pile hole 2 via an appropriate heavy machine (not shown).
前記鉄筋籠4は、円周方向に等間隔に配置された鉄筋製の主筋5と、該主筋5の軸方向の等間隔位置に溶接して配置された閉合形の帯筋である鉄筋製のフ−プ筋6とからなり、該籠4の下端部に略有底円筒状の筒状カバ−7が、リングカラ−8を介して液密に取り付けられている。
前記筒状カバ−7は鋼板を円筒状に形成し、その軸端部に鋼板を円錐形に形成したボトムカバ−9を溶接等で組み付けている。
前記ボトムカバ−9の下端部は、削孔2の下端部より若干小形の略相似形状に形成され、削孔2の下端部に密着可能にされている。
The reinforcing bar 4 is made of reinforcing steel bars, which are rebar main bars 5 arranged at equal intervals in the circumferential direction, and closed band bars arranged by welding at equal intervals in the axial direction of the main bars 5. A cylindrical cover 7 having a substantially bottomed cylindrical shape is attached to the lower end of the collar 4 in a liquid-tight manner via a ring collar 8.
The cylindrical cover 7 has a steel plate formed in a cylindrical shape, and a bottom cover 9 in which a steel plate is formed in a conical shape is assembled by welding or the like at the shaft end.
The lower end of the bottom cover 9 is formed in a slightly similar shape that is slightly smaller than the lower end of the drilling hole 2, and can be brought into close contact with the lower end of the drilling hole 2.
図中、10は鉄筋籠4に隣接して削孔2内に収容したスライム排出管で、下端部をスライム3内に没入させ、他端を吸い込みポンプ(図示略)に連通している。11は鉄筋籠4内に収容したトレミ−管で、上端部からコンクリ−ト12を流し込み可能にしている。   In the figure, reference numeral 10 denotes a slime discharge pipe accommodated in the drilling hole 2 adjacent to the reinforcing bar 4, the lower end portion is immersed in the slime 3, and the other end communicates with a suction pump (not shown). Reference numeral 11 denotes a tremi tube accommodated in the reinforcing bar 4, which allows the concrete 12 to be poured from the upper end.
なお、実施形態では補強籠として、主筋5とフ−プ筋6とが鉄筋製の鉄筋籠4を用いているが、これに限らず主筋5とフ−プ筋6とを、例えば軽量で高強度かつ耐食部材である炭素繊維の原糸、またはその複数本を拠り合わせたストランドを成形して構成し、該主筋5とフ−プ筋6に接着剤を含浸して鉄筋と略同程度の強度に形成し、かつ主筋5とフ−プ筋6とを接着剤で接着したものでも良い。
このような炭素繊維製の補強籠は、鉄筋籠に比べて軽量で、杭孔2への吊り込み作業の容易化と作業機の小形化を図れ、しかも鉄筋のような腐食の心配がない利点がある。
In the embodiment, as the reinforcing bar, the reinforcing bar 4 and the reinforcing bar 6 use the reinforcing bar bar 4 made of reinforcing bars. However, the present invention is not limited to this. A carbon fiber yarn that is a strong and corrosion-resistant member, or a strand formed by combining a plurality of strands of the carbon fiber is formed, and the main reinforcing bar 5 and the hoop 6 are impregnated with an adhesive, and approximately the same level as a reinforcing bar. It may be formed with strength, and the main reinforcement 5 and the FOUP 6 may be bonded with an adhesive.
Such a carbon fiber reinforcing rod is lighter than the reinforcing rod, has the advantage of facilitating the suspension work into the pile hole 2 and reducing the size of the working machine, and without the concern of corrosion like a reinforcing rod. There is.
このように構成した鉄筋籠4を用いて現場打ちコンクリ−ト杭を施工する場合は、先ず鉄筋籠4を施工現場または工場で製作する。
前記鉄筋籠4は、主筋5とフ−プ筋6を用いて従来と同様に円筒籠状に組み立て、その一端部側周面にリングカラ−8を固定し、該カラ−8に筒状カバ−7を液密に取り付ける
前記筒状カバ−7は鋼板を円筒形に形成し、その一端に鋼板を円錐形に形成したボトムカバ−9を溶接して製作する。この状況は図2および図3のようである。
When constructing on-site concrete piles using the reinforcing bar 4 configured as described above, the reinforcing bar 4 is first manufactured at the construction site or factory.
The rebar rod 4 is assembled into a cylindrical rod shape using a main bar 5 and a hoop bar 6 as in the prior art, and a ring collar 8 is fixed to the peripheral surface of one end thereof, and a cylindrical cover is attached to the collar 8. The cylindrical cover 7 is manufactured by forming a steel plate into a cylindrical shape and welding a bottom cover 9 having a steel plate formed into a conical shape at one end thereof. This situation is as shown in FIGS.
このように前記鉄筋籠4は、従来の鉄筋籠の一端に有底の筒状カバ−7を取り付けた簡単な構造であるから、在来の手法を用いて容易に製作できる。   As described above, the rebar rod 4 has a simple structure in which the bottomed tubular cover 7 is attached to one end of a conventional rebar rod, and thus can be easily manufactured using a conventional method.
次に、前記製作した鉄筋籠4を用いて現場打ちコンクリ−ト杭を施工する場合は、図4(a)〜(e)の手順による。
先ず、線閉時間に鉄道施設の所定位置の地盤1を掘削機(図示略)と公知の安定液を用いて掘削し、杭孔壁を安定化しながら所定深さの杭孔2を削孔する。
削孔中、前記安定液が杭孔2の底部に滞留し、該安定液に土屑が混入してスライム3が形成される。この状況は図4(a)のようである。
Next, when constructing an in-situ concrete pile using the manufactured reinforcing bar 4, the procedure shown in FIGS.
First, the ground 1 at a predetermined position of the railway facility is excavated using an excavator (not shown) and a known stabilizing liquid during the line closing time, and the pile hole 2 having a predetermined depth is drilled while stabilizing the pile hole wall. .
During the drilling, the stabilizing liquid stays at the bottom of the pile hole 2, and debris is mixed into the stabilizing liquid to form the slime 3. This situation is as shown in FIG.
この後、前記杭孔2内の中央に筒状カバ−7を下向きにして、前記鉄筋籠4を適宜な重機(図示略)を用いて吊り込み、その筒状カバ−7の下部を杭孔2内の底部に収容する。
更に、前記鉄筋籠4に隣接して杭孔2内にスライム排出管10を吊り込み、その吸込み口をスライム3内に没入する。
Thereafter, the tubular cover 7 is directed downward in the center of the pile hole 2 and the reinforcing bar 4 is suspended using an appropriate heavy machine (not shown), and the lower portion of the tubular cover 7 is suspended in the pile hole. 2 in the bottom.
Further, the slime discharge pipe 10 is suspended in the pile hole 2 adjacent to the reinforcing bar 4, and the suction port is immersed in the slime 3.
このようにすると、前述のように筒状カバ−7の下部が重量によってスライム3内に没入し、前記カバ−7の直下のスライム3が押し退けられて外側へ移動し、その分スライム3の表面が上昇する。この状況は図4(b)のようである。   In this way, as described above, the lower portion of the cylindrical cover 7 is immersed in the slime 3 by weight, and the slime 3 immediately below the cover 7 is pushed away and moved to the outside. Rises. This situation is as shown in FIG.
このような状況の下で鉄筋籠4内にトレミ−管11を吊り込み、その下端部を筒状カバ−7内の底部に位置付け、その上端部からコンクリ−ト圧送装置(図示略)を介して、コンクリ−ト12を流し込む。   Under such circumstances, the tremi tube 11 is suspended in the reinforcing bar 4 and its lower end is positioned at the bottom of the cylindrical cover 7, and from its upper end via a concrete pressure feeding device (not shown). Then, the concrete 12 is poured.
このようにすると、コンクリ−ト12がトレミ−管11内を流下して筒状カバ−7に収容される。このため、鉄筋籠4が自重とコンクリ−ト12の重量によって更に沈下し、その分筒状カバ−7の直下のスライム3が押し退けられて外側へ移動し、スライム3の表面が上昇する。この状況は図4(c)のようである。   In this way, the concrete 12 flows down in the tremi tube 11 and is accommodated in the cylindrical cover 7. For this reason, the reinforcing bar 4 further sinks due to its own weight and the weight of the concrete 12, and the slime 3 immediately below the cylindrical cover 7 is pushed away and moves outward, and the surface of the slime 3 rises. This situation is as shown in FIG.
この後、更にコンクリ−ト12がトレミ−管11から筒状カバ−7へ吐出され、該カバ−7内にコンクリ−ト12が略充填されると、鉄筋籠4とコンクリ−ト12の重量によって、鉄筋籠4が杭孔2の底部に密着する。
このため、筒状カバ−7の直下のスライム3が略完全に押し退けられ、これが杭孔2と筒状カバ−7との間の狭小域へ移動し、スライム3の表面が更に上昇する。
Thereafter, the concrete 12 is further discharged from the tremi tube 11 to the cylindrical cover 7, and when the concrete 12 is substantially filled in the cover 7, the weight of the reinforcing bar 4 and the concrete 12 is increased. As a result, the reinforcing bar 4 is brought into close contact with the bottom of the pile hole 2.
For this reason, the slime 3 immediately below the cylindrical cover 7 is pushed away almost completely, and this moves to a narrow area between the pile hole 2 and the cylindrical cover 7, and the surface of the slime 3 further rises.
このような状況の下で吸入ポンプ(図示略)を駆動し、スライム排出管10の下端部からスライム3を吸い込み、これをスライム排出管10に導いて外部へ排出する。この状況は図4(d)のようである。
この場合、スライム3は前述のように杭孔2と筒状カバ−7との間の狭小域へ押し出されているから、前記ポンプによる吸い込みないし排出が効率良く行なわれる。
Under such circumstances, the suction pump (not shown) is driven, the slime 3 is sucked from the lower end of the slime discharge pipe 10, and this is led to the slime discharge pipe 10 and discharged to the outside. This situation is as shown in FIG.
In this case, since the slime 3 is pushed out into the narrow area between the pile hole 2 and the cylindrical cover 7 as described above, the suction or discharge by the pump is efficiently performed.
こうしてスライム3が外部へ排出され、またトレミ−管11からコンクリ−ト12が筒状カバ−7内に吐出され、該カバ−7がコンクリ−ト12で満たされると、余剰のコンクリ−ト12が筒状カバ−7から溢れ出て、杭孔2の断面全域を充填する。   In this way, the slime 3 is discharged to the outside, and the concrete 12 is discharged from the tremi tube 11 into the cylindrical cover 7. When the cover 7 is filled with the concrete 12, the surplus concrete 12 Overflows from the cylindrical cover 7 and fills the entire cross section of the pile hole 2.
スライム3の排出後もトレミ−管11からコンクリ−ト12が吐出され、該コンクリ−ト12が筒状カバ−7周辺を満たして、杭孔2を徐々に充填し、杭孔2の全体を充填したところで、コンクリ−ト12の供給が停止され、トレミ−管11とスライム排出管10とが杭孔2ないしコンクリ−ト12から引き抜かれる。
この後、コンクリ−ト12が硬化してコンクリ−ト杭の現場打ちが終了する。この状況は図4(e)のようである。
After the slime 3 is discharged, the concrete 12 is discharged from the tremi tube 11, and the concrete 12 fills the periphery of the cylindrical cover 7, gradually fills the pile hole 2, and the entire pile hole 2 is filled. When filled, the supply of the concrete 12 is stopped, and the tremi pipe 11 and the slime discharge pipe 10 are pulled out from the pile hole 2 or the concrete 12.
Thereafter, the concrete 12 is hardened and the concrete piles are finished on-site. This situation is as shown in FIG.
こうして現場打ちされたコンクリ−ト杭は、前述のように筒状カバ−7とスライム排出管10によって、スライム3が精度良く速やかに除去されるから、残存スライムによる即時沈降を防止され、杭先端の杭耐力と施工の信頼性を得られ、建物の高層化に応じられる
しかも、コンクリ−ト杭の下端部に、筒状カバ−7が鉄筋籠4と一体に埋設されているから、筒状カバ−7の先端部を良好な支持地盤1に接触し、筒状カバ−7の先端部におけるコンクリ−ト7の巻き込みをなくして、現場打ちコンクリ−ト杭の強度と安定性を向上する。
In the concrete pile thus struck in the field, the slime 3 is removed quickly and accurately by the cylindrical cover 7 and the slime discharge pipe 10 as described above. Since the pile cover 7 is embedded in the bottom of the concrete pile and is integrated with the reinforcing bar 4, the pile strength The tip of the cover 7 is brought into contact with the good support ground 1 to eliminate the entanglement of the concrete 7 at the tip of the cylindrical cover 7, thereby improving the strength and stability of the in-situ concrete pile.
なお、この実施形態は鉄筋籠4をコンクリ−ト杭の内部に配置しているが、この例に限らず橋脚や高架版、支柱、スラブのようなコンクリ−ト構造物の内部に配置しても良い。   In addition, although this embodiment has arrange | positioned the reinforcing bar 4 inside a concrete pile, not only in this example, it arrange | positions inside the concrete structure like a bridge pier, an elevated plate, a support | pillar, and a slab. Also good.
本発明の鉄筋籠および現場打ちコンクリ−ト杭の施工法並びに現場打ちコンクリ−ト杭は、補強籠の製作の容易化と軽量化並びに作業機の小形化を図れ、補強籠の迅速かつ安全な吊り込みとスライムによる沈降を防止できるとともに、スライムを合理的かつ高精度で効率良く除去し、施工の信頼性と安定した杭耐力を得られ、建物の高層化に応じられるから、例えば狭隘で低空頭の鉄道施設の施工に好適である。   The method of constructing the steel bar and the on-site concrete pile of the present invention and the on-site concrete pile can facilitate the manufacture and weight reduction of the reinforcing bar and reduce the size of the work machine. It can prevent sedimentation due to suspension and slime, and can efficiently remove slime with reasonable and high accuracy, and it can provide construction reliability and stable pile strength, and can respond to high-rise buildings. It is suitable for the construction of the head railway facility.
本発明を適用した鉄筋籠の断面図で、鉄筋籠を杭孔に吊り込んでコンクリ−トを打設し、杭孔底部のスライムを外部へ排出している状況を示している。It is sectional drawing of the rebar rod to which this invention is applied, shows the situation where the rebar rod is suspended in the pile hole, the concrete is placed, and the slime at the bottom of the pile hole is discharged to the outside. 本発明を適用した鉄筋籠の斜視図である。It is a perspective view of a reinforcing bar rod to which the present invention is applied. 図2のA−A線に沿う断面図で、若干縮小して示している。It is sectional drawing which follows the AA line of FIG.
本発明による施工手順を示す断面図で、(a)は杭孔を削孔後の状況を示し、(b)は杭孔に鉄筋籠を吊り込み、筒状カバ−の下部をスライムに没入させて、スライムを押し退けている状況を示している。(c)は鉄筋籠にトレミ−管を挿入し、該管を介しコンクリ−トを打設し、コンクリ−トを筒状カバ−に収容している状況を示し、(d)はコンクリ−トが筒状カバ−に充填し終わり、スライムを筒状カバ−と杭孔との間に押し出して吸引排出している状況を示している。(e)は筒状カバ−から溢出したコンクリ−トが杭孔全域に充填され、かつトレミ−管と排出管とを引き抜いた状況を示している。It is sectional drawing which shows the construction procedure by this invention, (a) shows the condition after drilling a pile hole, (b) hangs a reinforcing bar in the pile hole, and immerses the lower part of a cylindrical cover in slime. It shows the situation where the slime is pushed away. (C) shows a situation in which a tremi tube is inserted into the reinforcing bar, and a concrete is driven through the tube, and the concrete is accommodated in a cylindrical cover. (D) is a concrete. Shows the situation where the cylindrical cover is filled and the slime is pushed out between the cylindrical cover and the pile hole and sucked out. (E) shows a state in which the concrete overflowing from the cylindrical cover is filled in the entire pile hole and the tremi pipe and the discharge pipe are pulled out.
符号の説明Explanation of symbols
1 地盤
2 杭孔
3 スライム
4 補強籠(鉄筋籠)
5 主筋
6 フ−プ筋
7 筒状カバ−
1 Ground 2 Pile hole 3 Slime 4 Reinforcement rod (rebar rod)
5 Main muscle 6 Hoop muscle 7 Tubular cover

Claims (11)

  1. 複数の主筋とフ−プ筋とを籠状に形成した補強籠において、前記補強籠の一端部側に有底の筒状カバ−を設けたことを特徴とする補強籠。   A reinforcing rod having a plurality of main bars and hood bars formed in a bowl shape, wherein a bottomed cylindrical cover is provided on one end side of the reinforcing rod.
  2. 前記主筋とフ−プ筋とを、鉄筋または炭素繊維製とした請求項1記載の補強籠。   The reinforcing bar according to claim 1, wherein the main bar and the hoop are made of steel bars or carbon fibers.
  3. 炭素繊維製ストランドの主筋に炭素繊維製ストランドを成形したフ−プ筋を接着し、前記主筋とフ−プ筋に接着剤を含浸した請求項1記載の補強籠。   The reinforcing barb according to claim 1, wherein a hoop formed of a carbon fiber strand is bonded to a main bar of the carbon fiber strand, and the main bar and the hoop are impregnated with an adhesive.
  4. 前記筒状カバ−の底部を削孔の底部と係合可能に形成した請求項1記載の補強籠。   2. The reinforcing rod according to claim 1, wherein the bottom portion of the cylindrical cover is formed to be engageable with the bottom portion of the drilling hole.
  5. 地盤を掘削した杭孔に補強籠を吊り込んでコンクリ−トを打設する現場打ちコンクリ−ト杭の施工方法において、下部側に前記コンクリ−トを収容可能な有底の筒状カバ−を設けた補強籠を杭孔に吊り込み、前記筒状カバ−を杭孔底部に収容することを特徴とする現場打ちコンクリ−ト杭の施工方法。   In the construction method of on-site concrete piles, in which a reinforcing rod is suspended in a pile hole excavated in the ground and a concrete is placed, a bottomed cylindrical cover capable of accommodating the concrete is provided on the lower side. A method for constructing an in-situ concrete pile, wherein the provided reinforcing rod is suspended in the pile hole, and the cylindrical cover is accommodated in the bottom of the pile hole.
  6. 前記筒状カバ−を杭孔底部に滞留するスライムに没入し、該スライムを前記筒状カバ−の外側へ押し退ける請求項5記載の現場打ちコンクリ−ト杭の施工方法。   6. The method for constructing on-site concrete piles according to claim 5, wherein the tubular cover is immersed in a slime staying at the bottom of the pile hole, and the slime is pushed out to the outside of the tubular cover.
  7. 前記補強籠を杭孔内に吊り込み後、該補強籠にコンクリ−トを打設して筒状カバ−に収容し、該筒状カバ−を杭孔底部に着地させる請求項5記載の現場打ちコンクリ−ト杭の施工方法。   6. The site according to claim 5, wherein after the reinforcement rod is suspended in the pile hole, a concrete is placed on the reinforcement rod and accommodated in a cylindrical cover, and the cylindrical cover is landed on the bottom of the pile hole. Construction method of hammered concrete pile.
  8. 前記コンクリ−トを筒状カバ−に収容後、前記スライムを筒状カバ−と杭孔との間に押し出す請求項5または請求項6記載の現場打ちコンクリ−ト杭の施工方法。   The construction method of the spot cast concrete pile of Claim 5 or Claim 6 which extrudes the said slime between a cylindrical cover and a pile hole after accommodating the said concrete in a cylindrical cover.
  9. 前記スライムを筒状カバ−の外側へ押し退け後、該スライムを杭孔の外部へ排出する請求項6または請求項8記載の現場打ちコンクリ−ト杭の施工方法。   9. The construction method of a spot piled concrete pile according to claim 6 or 8, wherein the slime is discharged to the outside of the pile hole after the slime is pushed out of the cylindrical cover.
  10. 複数の主筋とフ−プ筋とを籠状に形成した補強籠を、杭孔に打設したコンクリ−ト内に配置した現場打ちコンクリ−ト杭において、一端部側に有底の筒状カバ−を設けた補強籠を前記コンクリ−ト内に配置し、前記筒状カバ−をコンクリ−ト杭の下端に配置するとともに、杭孔底部と密着可能に配置したことを特徴とする現場打ちコンクリ−ト杭。   In the in-situ concrete pile in which the reinforcement rod formed with a plurality of main bars and hook bars in a bowl shape is placed in the concrete placed in the pile hole, a cylindrical cover with a bottom on one end side A reinforcing rod provided with-is disposed in the concrete, the tubular cover is disposed at the lower end of the concrete pile, and is disposed in close contact with the bottom of the pile hole. -Toe pile.
  11. 前記主筋とフ−プ筋とを、鉄筋または炭素繊維製とした請求項10記載の現場打ちコンクリ−ト杭。
    The in-situ concrete pile according to claim 10, wherein the main reinforcing bar and the hoop are made of reinforcing steel or carbon fiber.
JP2005319038A 2005-11-02 2005-11-02 Reinforcing cage, construction method for cast-in-place concrete pile, and cast-in-place concrete pile Withdrawn JP2007126846A (en)

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CN102383420A (en) * 2011-08-17 2012-03-21 江苏建华管桩有限公司 High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar
CN102644279A (en) * 2012-04-28 2012-08-22 从卫民 Uplift pile with prestress reinforced plastic rods
CN102644278A (en) * 2012-04-28 2012-08-22 从卫民 Prestress steel-plastic structure retaining cantilever pile with reinforced plastic stirrups
CN102644281A (en) * 2012-04-28 2012-08-22 从卫民 Prestressed supporting cantilever pile with reinforcing plastic stirrups
CN102644276A (en) * 2012-04-28 2012-08-22 从卫民 Supporting cantilever pile with prestress reinforced plastic rod and prestress steel bowstring composite structure
CN103741682A (en) * 2013-12-31 2014-04-23 江苏中瑞路桥建设有限公司 Carbon fiber cloth bag cast-in-situ anti-arch curved surface combined irregular-shaped pile and construction method thereof
CN103898839A (en) * 2014-03-03 2014-07-02 福建省建筑工程质量检测中心有限公司 Bridge supplementary pile preloading consolidation method
CN104612413A (en) * 2015-01-30 2015-05-13 中冶建工集团有限公司 Static pressure pipe pile hole protecting device
JP2015143453A (en) * 2013-05-31 2015-08-06 株式会社新生工務 Pile and pile installation method
JP2016173028A (en) * 2013-05-31 2016-09-29 株式会社新生工務 Pile and installation method for pile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383420A (en) * 2011-08-17 2012-03-21 江苏建华管桩有限公司 High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar
CN102383420B (en) * 2011-08-17 2014-01-15 江苏建华管桩有限公司 High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar
CN102644279A (en) * 2012-04-28 2012-08-22 从卫民 Uplift pile with prestress reinforced plastic rods
CN102644278A (en) * 2012-04-28 2012-08-22 从卫民 Prestress steel-plastic structure retaining cantilever pile with reinforced plastic stirrups
CN102644281A (en) * 2012-04-28 2012-08-22 从卫民 Prestressed supporting cantilever pile with reinforcing plastic stirrups
CN102644276A (en) * 2012-04-28 2012-08-22 从卫民 Supporting cantilever pile with prestress reinforced plastic rod and prestress steel bowstring composite structure
JP2015143453A (en) * 2013-05-31 2015-08-06 株式会社新生工務 Pile and pile installation method
JP2016173028A (en) * 2013-05-31 2016-09-29 株式会社新生工務 Pile and installation method for pile
CN103741682A (en) * 2013-12-31 2014-04-23 江苏中瑞路桥建设有限公司 Carbon fiber cloth bag cast-in-situ anti-arch curved surface combined irregular-shaped pile and construction method thereof
CN103741682B (en) * 2013-12-31 2015-10-07 江苏中瑞路桥建设有限公司 The construction method of a kind of carbon fiber cloth bag cast-in-place antiarch surface composition shaped pile
CN103898839A (en) * 2014-03-03 2014-07-02 福建省建筑工程质量检测中心有限公司 Bridge supplementary pile preloading consolidation method
CN104612413A (en) * 2015-01-30 2015-05-13 中冶建工集团有限公司 Static pressure pipe pile hole protecting device

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