JPH11166231A - Bottom widening existing pile and embedding machine - Google Patents
Bottom widening existing pile and embedding machineInfo
- Publication number
- JPH11166231A JPH11166231A JP36610097A JP36610097A JPH11166231A JP H11166231 A JPH11166231 A JP H11166231A JP 36610097 A JP36610097 A JP 36610097A JP 36610097 A JP36610097 A JP 36610097A JP H11166231 A JPH11166231 A JP H11166231A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- excavator
- case
- ground
- boring case
- 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.)
- Pending
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明による基礎杭は、支持地盤
層の強度を調査した上で直軸の深度長さを決定して埋設
する建造物基礎用拡底既成杭であって、軽量で強固、尚
も、安価で施工性に優れた杭を目的に応じて確実に構築
することができる、特に、軟弱地盤を対象とした小規模
建築物の基礎や土留用杭或いは海底地盤等の基礎、その
他アンカー杭等には支持力と同時に引抜力にも強い杭と
して極めて効果的な杭となる、また、掘進機を傾斜して
埋設する事で斜杭の埋設も可能となる、直軸を補強する
ためには、必要に応じて直軸パイプ内にコンクリート或
いは鉄筋コンクリートを打設すればよい、更に、直軸パ
イプに複数個の孔を穿って透水材パイプと重合して埋設
する事で雨水を土中に浸透還元する透水用杭となり、地
震時には地層間隙水や地下水を土砂から分離して地上に
噴出させる液状化防止用杭に応用する事ができるなど極
めて有効な拡底既成杭と埋設機に関するものである。BACKGROUND OF THE INVENTION A foundation pile according to the present invention is a prefabricated prefabricated pile for a building foundation to be buried by determining the depth of a straight axis after examining the strength of a supporting ground layer, and is lightweight and strong. Still, it is possible to reliably build a low-cost pile with excellent workability according to the purpose, in particular, foundations of small-scale buildings targeting soft ground, foundations for retaining soil or foundations on the seabed, Other anchor piles are extremely effective piles that are strong in pulling force as well as supporting force. In addition, sloping piles can be buried by burying the excavator, and straight shafts are reinforced. In order to do this, concrete or reinforced concrete may be cast in the straight shaft pipe as necessary.Furthermore, rainwater is formed by drilling multiple holes in the straight shaft pipe and superimposing it with the permeable material pipe and burying it. It becomes a water-permeable pile that penetrates and reduces in the soil. The or groundwater relates extremely effective 拡底 prefabricated pile with embedded machine etc. can be applied to liquefaction prevention piles jetting on the ground separately from the sand.
【０００２】[0002]
【従来の技術】近年、軟弱地盤に建築物を建設する機会
が増えて、これに伴って住宅のような小規模建築物の不
同沈下による障害がみられるようになった、こした問題
に対応するための基礎工法は多様であって、ここに列挙
する事は困難であるが、工事費が安く比較的工法が安易
で一般的な基礎工法の中に現場造成杭のソイルセメント
コラム等がある。2. Description of the Related Art In recent years, the number of opportunities for constructing buildings on soft ground has increased, and this has led to problems caused by uneven settlement of small-scale buildings such as houses. There are a variety of foundation methods to perform, and it is difficult to list them here. However, construction costs are relatively low and the construction method is relatively easy. .
【０００３】ソイルセメントコラム基礎等は、セメント
ミルクを造成地盤に注入して土と攪拌混合してコラム状
に造成するものである、現場造成コラム基礎は施工に先
立って地盤支持力や現場の土質性状の調査が必要とな
り、土とセメントの攪拌練りを均一に行われないと杭強
度の発現に差異が生じるなどの問題があるため、施工管
理には細心な注意が必要となるなど様々な問題点があ
る、また、鋼製杭に螺旋状のつばを具えた螺旋既成杭等
が摩擦抵抗として知られているが、杭自体のコストが高
く特殊な現場以外には適応性が少ないとされている。[0003] A soil-cement column foundation or the like is to form cement into a column by injecting cement milk into a formation ground and stirring and mixing with the soil. Investigation of properties is necessary, and if the mixing and mixing of soil and cement are not performed uniformly, there will be problems such as differences in the manifestation of pile strength.Therefore, various problems such as careful attention to construction management are required. There is also a point.Also, pre-formed spiral piles with spiral collars on steel piles are known as friction resistance, but the cost of the pile itself is high and it is said that it is less adaptable except for special sites. I have.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、小規模建築
物の不同沈下等による障害防止用基礎杭として開発さ
れ、更に、土留用及び擁壁支柱用杭等に使用した場合に
は、支持力と同時に引き抜き力にも強い杭を特徴とす
る、従来、底版の極端に広い杭である拡底既成杭を埋設
する工法が無かった、本発明は拡底既成杭と拡底既成杭
を所定深度まで直軸に回転応力を与えずに埋設するする
埋設機に関するものである、SUMMARY OF THE INVENTION The present invention has been developed as a foundation pile for preventing obstacles due to uneven settlement of a small-scale building and the like. Conventionally, there has been no construction method of burying an expanded pile, which is an extremely wide pile with a bottom slab. It relates to a burial machine that burials without applying rotational stress to the shaft,
【０００５】従来、杭基礎は深部に存在する支持地盤を
構造物の基礎として利用するために、その支持地盤まで
杭を打設するものであり、支持層が比較的浅部に存在す
る場合は、どの様な杭基礎によっても余り問題は起こら
ないが、軟弱地盤が連続して厚く堆積している地盤等に
おいては、一般には、摩擦による群杭或いは現場拡底杭
等によって杭の支持力を増加させる様に努力している。Conventionally, a pile foundation is formed by driving a pile to the supporting ground in order to use a supporting ground existing in a deep part as a foundation of a structure. However, no problem occurs with any type of pile foundation.However, in the case of soft ground with thick continuous piles, the pile supporting capacity is generally increased by group piles or on-site expanded piles due to friction. I'm trying to make it happen.
【０００６】従来、一般的に使用されている工法のソイ
ルセメントコラム工法は、前記の通り、現場の土にセメ
ントミルクを注入攪拌して基礎コラムを造成するのであ
るから、現場の土質の性状等に対して自前に調査する必
要がある、 また、造成された杭の強度や形状等の確認
等に就いても施工管理が十分でないと問題が発生する恐
れがある、これらに対して本発明の拡底既成杭は、工場
において堅固で正確な形状で製作されるために、材令に
対しても十分に保証できる材質の杭を埋設する事ができ
る、また、底版面積に対して直軸は極めて小断面積を持
った杭の形態となるために、実軽量で堅固で長期に亘っ
て安定した経済的な杭となることを特徴とする。Conventionally, in the soil cement column method of the generally used method, as described above, the foundation column is created by injecting and stirring the cement milk into the soil at the site. It is necessary to carry out an investigation on its own.Also, even if confirmation of the strength, shape, etc. of the created piles, problems may occur if the construction management is not sufficient. Prefabricated expanded piles are manufactured in a firm and accurate shape at the factory, so it is possible to embed piles of material that can be sufficiently guaranteed against the age of the material. Since the pile has a small cross-sectional area, it is characterized in that it is an economical pile that is stable, lightweight, and stable over a long period of time.
【０００７】本発明の拡底既成杭は、直軸の断面積と底
版の面積比を大きくして杭自体の軽量化と材料の無駄を
無くし引抜き力に強い拡底既成杭としたことを特徴とす
る、また、拡底既成杭を埋設する鋼製つば付き掘進機埋
設機は、従来の汎用重機のショベル等のアーム先端部に
装着して使用できるオプションタイプとなる、施工に対
しては、オーガータイプの鋼製つば付掘進機のケース内
に拡底既成杭の直軸部を挿入して、直軸先端部に装着さ
れた鋼製キャップとケース内の先端部に磁着して支持す
る電磁版を設けて重機移動時の杭脱落を防止する方法を
取っている、直軸の先端部の鋼製キャップは直軸とボル
ト等で固定しているため、杭を埋設した後は取り外して
繰り返して使用することができる。The prefabricated pile according to the present invention is characterized in that the cross-sectional area of the straight shaft and the area ratio of the bottom slab are increased to reduce the weight of the pile itself, eliminate waste of material, and provide a strong prefabricated pile with high pull-out force. In addition, the excavator burial machine with a steel brim for burying an existing pile with an expanded bottom is an optional type that can be used by attaching it to the end of an arm such as a shovel of a conventional general-purpose heavy machine. Insert the straight shaft part of the prefabricated bottom pile into the case of the excavator with steel collar, and install the steel cap attached to the tip of the straight shaft and the electromagnetic plate magnetically attached to and support the tip inside the case The steel cap at the end of the straight shaft is fixed to the straight shaft with bolts, etc., so that the pile is buried when the heavy equipment is moved. be able to.
【０００８】[0008]
【課題が解決するための手段】本発明は、上述した目的
を達成するため、軟弱地盤等では底版を鋼製板以外に軽
量で硬質なセラミック材による成型円形版とすることで
量産化と低コスト化が図れる、また、底版掘進面には鋼
製の平板掘進刃を嵌入する溝を設け、底版上面中心には
直軸パイプを覆入して連結ボルトで固定する円形突起物
も底版と一体で成型する事ができるなどセラミック成型
品としてのメリットは大きい、勿論、地層強度が複雑な
地盤で長尺大口径直軸を必要する場合には、礫等地層を
掘進するに適応する掘進刃の形状や底版の材質も検討す
る余地があるが、軟弱地盤等に適応する直軸は一般的に
は市販の鋼管や硬質塩ビ管等を使用する、また、直軸パ
イプ内にコンクリートや鉄筋コンクリートを充填して杭
の補強を必要とする場合には、埋設後の土圧に耐えられ
る程度の肉厚管を使用する、直軸と拡底部とは材質的に
異質としても構造強度が設計値を満足させれば問題はな
い、このように直軸部と拡底部を分割した部品とし、組
立方が簡単であれば個々の部品として現場に搬入してか
ら組み立てる方法が取扱や運搬等を含めて能率的であり
経済的である。SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention achieves mass production and low production by using a light and hard ceramic material as a circular plate instead of a steel plate as a bottom plate in soft ground. The bottom plate excavation surface is provided with a groove for inserting a steel flat plate excavation blade, and a circular projection that covers the straight pipe and fixes it with connecting bolts is integrated with the bottom plate at the center of the bottom plate upper surface. The merit as a ceramic molded product is great, for example, it can be molded with.The shape of the excavation blade which is suitable for excavating the gravel etc. Although there is room for studying the material of the slab and the bottom slab, a commercially available steel pipe or hard PVC pipe is generally used for the straight shaft suitable for soft ground, and concrete or reinforced concrete is filled in the straight shaft pipe. Need pile reinforcement In this case, use a thick pipe that can withstand the earth pressure after embedding.There is no problem if the structural strength satisfies the design value even if the straight shaft and the expanded bottom are made of different materials. If the straight shaft portion and the expanded bottom portion are divided into parts and the assembling method is simple, it is efficient and economical to carry out assembling individual parts after assembling them, including handling and transportation.
【０００９】つば付掘進ケースの末端部に設けた掛脱可
能な複数の掛合溝と杭底版に具えた掛脱可能の突起物と
が掛け合って掘進する構成の杭埋設方法に就いては、著
者が平成５年１２付き２２日に取得した実用新案登録大
１９９８２４７号、考案の名称「螺旋杭」に記載した方
法と同じである。A method of burying a pile in which a plurality of hooking grooves provided at the end of a digging case with a collar and a hookable projection provided on a pile bottom slab engage with each other and excavate is described by the author. This is the same as the method described in Utility Model Registration No. 1998247, which was acquired on December 22, 1993, the name of the device, "spiral pile".
【００１０】前記構成による拡底既成杭を埋設するに
は、直軸部を掘進機ケース内に装填して埋設位置に架装
重機を移動し掘進機を所定の角度に立てて、つば付掘進
機上部の減速機を回転すると掘進機は自重とつばの推力
によって掘進機支持用リーダーに沿って土中に下降す
る、所定位置に達したら掘進機を逆回転させ、支持リー
ダーの先端部に設けた滑車を経て掘進機を懸垂するワイ
ヤーを重機又はリーダーに架装されたウインチで巻き取
り上昇させる、前記、埋設方法によれば拡底杭の直軸部
には掘進回転負荷が掛らず、地層にも触れることなく所
定の深さまで埋設することができる。In order to embed a prefabricated pile with the above-described configuration, the straight shaft portion is loaded into an excavator case, the laying machine is moved to the embedding position, and the excavator is set at a predetermined angle. When the upper reducer is rotated, the excavator descends into the soil along the excavator support leader by its own weight and the thrust of the brim, and when it reaches a predetermined position, the excavator is rotated reversely and provided at the tip of the support leader The wire hanging from the excavator via the pulley is wound up by a winch mounted on a heavy machine or a leader. According to the above-mentioned embedding method, the excavation rotation load is not applied to the straight shaft portion of the expanded pile, and the stratum is formed. It can be buried to a predetermined depth without touching.
【００１１】前記、掘進機は、汎用重機の油圧ショベル
等のアームの先端部と掘進機支持リーダーに設けられた
ブラケットをピン等で連結するオプションタイプが可能
であり、掘進ケースの螺旋つばは、掘進時の土砂を地上
に掘り出さないために掘進ケース下端部から３〜４段程
度設けるだけでよい。The excavator can be an optional type in which a tip of an arm such as a hydraulic shovel of a general-purpose heavy equipment is connected to a bracket provided on an excavator support leader by a pin or the like. It is only necessary to provide about 3 to 4 steps from the lower end of the excavation case so as not to excavate earth and sand during excavation on the ground.
【００１２】拡底既成杭は、直軸に掛かる曲げ応力を考
慮して設計した範囲に於いて、直軸と拡底部の断面積の
比率を変える事ができる、軟弱地盤を対象とした小規模
建築物等では底版と直軸との断面積比を４〜６倍の範囲
に取ることができる、また、直軸と拡底部とが別途の生
産工程によるため直軸と底版部との材質を変える事もで
きる、掘進面に具える掘削刃は鋼製とし底版はセラミッ
ク等の成型製品とするなど、地盤の強弱に応じた設計値
を基本とすることで、低コストの拡底既成杭とする事が
できる、拡底既成杭埋設用掘進機は汎用の油圧ショベル
等の重機のアーム先端部を一部改良して使用する事がで
きる、例えば、小規模建築物等の拡底杭は杭長も４〜５
ｍ程度で小回りの作業が要求されるため、小型の油圧シ
ヨベルを使用する、また、１０ｍ前後の長尺杭の場合に
はドリル専用機やパワースプリッタ等を架装用重機とし
て利用する事ができる。[0012] The prefabricated expanded pile is a small-scale building for soft ground in which the ratio of the cross-sectional area between the direct axis and the expanded section can be changed within a range designed in consideration of the bending stress applied to the direct axis. The cross-sectional area ratio between the bottom plate and the straight shaft can be set in the range of 4 to 6 times for products, etc. In addition, the material of the straight shaft and the bottom plate portion is changed because the straight shaft and the expanded bottom portion are manufactured separately. It is possible to make low-cost, expanded bottom piles based on design values according to the strength of the ground, such as making the excavation blade on the excavation surface made of steel and the bottom slab made of a molded product such as ceramic. The excavation machine for burying existing piles can be used by partially improving the tip of the arm of heavy equipment such as a general-purpose hydraulic excavator. 5
Since a small turning work is required in about m, a small hydraulic shovel is used. In the case of a long pile of about 10 m, a drill dedicated machine, a power splitter, or the like can be used as a heavy equipment for mounting.
【００１３】本発明の請求項２に記載の透水パイプ重合
の拡底既成杭は直軸を鋼管或いは硬質塩ビ管等とし複数
個の通水孔を設けて、側溝用ピット或いは専用ピットを
設けてピット内に、前記、透水パイプ重合の拡底既成杭
を埋設して雨水を集めて地下に還元する、また、地震時
には地層の間隙水や地下水を土砂と分離して直軸パイプ
を経て地上に噴出して液状化防止用の透水管となること
を特徴とする。According to a second aspect of the present invention, there is provided a pile formed of a water-permeable pipe having an expanded bottom and having a straight shaft formed of a steel pipe or a rigid PVC pipe and provided with a plurality of water holes, a pit for a gutter or a dedicated pit. In the above, buried prefabricated piles of water-permeable pipes are buried to collect rainwater and return it to the underground.Also, in the event of an earthquake, pore water and groundwater in the stratum are separated from sediment and spouted to the ground via a straight pipe. To form a permeable pipe for preventing liquefaction.
【００１４】擁壁用基礎杭とした場合には、擁壁支柱を
直軸パイプ内に立ててコンクリート或いは鉄筋コンクリ
ートを打設固定する方法を取ることで、支柱と拡底基礎
とが一体化した曲げ強度に強く引き抜きにも強い極めて
効果的な支柱杭となる、また、掘進機を傾斜角度を約１
５゜範囲に立てて掘進する事で斜杭の埋設も可能となる
ことを特徴とする。In the case of a foundation pile for a retaining wall, a method in which a retaining wall column is erected in a straight pipe and concrete or reinforced concrete is cast and fixed is employed, so that the bending strength of the column and the expanded foundation is integrated. It becomes a very effective pillar pile that is strong against pulling out, and the excavator has an inclination angle of about 1
It is characterized by the fact that it becomes possible to bury slanted piles by excavating in the 5 ゜ range.
【００１５】[0015]
【作用】本発明によれば、杭の下端部を拡大した拡底既
成杭を埋設することで、軽量で堅固な支持力の強い、尚
も、引き抜き力にも強い杭を提供する事ができる、本拡
底既成杭は埋設時に直軸に対して回転力を与えることな
く土中に埋設する事ができるために、直軸断面を必要以
上に太くする事はない、軟弱地盤を対象とすれば直軸に
対して底版の面積は最大５〜６倍とする事ができる、ま
た、拡底であるために引き抜きに強い杭となり、杭上部
の杭間を強固な梁で連結すれば不同沈下等の被害を減少
することができる。また、造成地の擁壁用支柱と一体化
する事で転倒にも強い構造を作る事ができる。According to the present invention, by embedding an expanded bottom pile in which the lower end portion of the pile is enlarged, it is possible to provide a pile that is lightweight, has a strong supporting force, and also has a strong pulling force. Since this prefabricated pile can be buried in the soil without giving a rotating force to the straight shaft at the time of burying, the cross section of the straight shaft will not be unnecessarily thick. The area of the bottom slab can be made up to 5 to 6 times as large as the shaft. Also, because of the expanded bottom, it becomes a pile that is strong for pulling out, and if the piles at the top of the pile are connected with strong beams, damage such as uneven settlement will occur Can be reduced. In addition, by integrating with the support for the retaining wall of the developed land, a structure that is strong against falling can be made.
【００１６】直軸部と拡底部とを切り離した部品で生産
するために、土質の性状や地盤強度に対応した底版と直
軸の材質及び形状等を選定して決める事ができる、例え
ば、直軸は市販の鋼管や硬質塩ビ管或いは型鋼材等の使
用が可能であり、必要に応じてパイプ内に鉄筋コンクリ
ートを打設することで目的を達せられる、底版は鋼材に
限らずセラミックの成型製品とすることで軽量化と量産
が可能でありコストの低減も図れる、前記の通り、製品
の全ては工場で生産されるため、底版の面積や直軸の強
度等設計値に準じた強度と形状の製品を得ることができ
る、軟弱地盤等の短杭（５〜６ｍ）として使用する場合
の施工機は、汎用重機の小型油圧シヨベル等のアーム先
端部を一部改良して掘進機を架装する簡単な方法を取る
ことができ、小規模の施工面積でも小回りが効き作業性
が高まる、また、自然の起伏はそのままに残して安定し
た基礎杭として効果的であるなどを特徴とした拡底既成
杭。[0016] In order to produce parts with the straight shaft portion and the expanded bottom portion separated, the material and shape of the bottom plate and the straight shaft can be selected and determined according to the properties of the soil and the ground strength. The shaft can be made of commercially available steel pipe, hard PVC pipe or molded steel, etc., and the purpose can be achieved by placing reinforced concrete in the pipe if necessary. By doing so, it is possible to reduce weight and mass production and reduce costs.As mentioned above, since all products are manufactured at the factory, strength and shape according to design values such as the area of the bottom plate and the strength of the straight axis When used as short piles (5-6 m) on soft ground where products can be obtained, the excavator is installed by partially improving the arm tip of a small hydraulic shovel or the like of a general-purpose heavy machine. An easy way you can take a small rule Maneuverability workability is improved effectiveness in construction area, also 拡底 established Pile wherein like natural undulations is effective as a stable foundation piles left intact.
【００１７】直軸と掘進ケースの内径とに一定の間隙を
保って埋設する、この間隙に見合う寸法の透水材パイプ
を複数の穴を穿った直軸に重合して、雨水を地下に浸透
させる透水パイプとして、また、地震時の地中間隙水や
地下水を土砂と分離して地上に噴出する液状化防止用パ
イプに応用する事ができることを特徴とした拡底既成
杭。A permeable material pipe buried with a certain gap between the straight shaft and the inner diameter of the excavating case, which is sized to match this gap, is superimposed on a straight shaft having a plurality of holes to allow rainwater to penetrate underground. A prefabricated pile that can be used as a permeable pipe, or as a liquefaction prevention pipe that separates underground pore water and groundwater during an earthquake from earth and sand and gushes it to the ground.
【００１８】本発明の拡底既成杭は、底版の強度及び掘
進刃の形状や材質等を考慮すれば掘進ケースの長さが許
される範囲に於いて工法は確立する、引き抜き力の強い
杭は大型の土木工事にも適応されるなど応用範囲が広
く、且つ、有効な拡底既成杭を提供するものである。In the prefabricated pile according to the present invention, the construction method is established within a range where the length of the excavating case is allowed in consideration of the strength of the bottom plate and the shape and material of the excavating blade. The present invention provides an effective wide-spread prefabricated pile with a wide application range, such as being applied to civil engineering works.
【００１９】[0019]
【実施例】図１は、直軸パイプ１の先端部に拡大面積の
セラミック円形底版２を具えてなる拡底既成杭である、
セラミック円形底版２の掘進面に鋼製の掘削刃３を具
え、上面には底版２と一体成型となる円形突起物４を有
し、直軸パイプ１を覆入してボルト等で連結する、更
に、底版上面には、直軸パイプ１を鋼製つば付掘進ケー
ス５内に挿入して、掘進ケース５下端部に設けた掛脱可
能な掛合溝６と掛け合わされる掛脱可能な掛合突起物７
を具える、掘進ケース５の下辺部内部には直軸パイプ１
の芯だし用のガイド板８が装填されるため掛合部が正確
に噛み合う、また、掘進ケース５内の上端部に装填され
たスプリング９を介してフリーボルトで懸垂された電磁
版１０を設け、挿入された直軸パイプ１上端部に装填さ
れた鋼製キャップ１１が磁着して掘進ケース５内に支持
されるため、施工機が移動時した時に掘進ケース５から
拡底既成杭は脱落することはない。FIG. 1 is an enlarged bottom prefabricated pile having a ceramic circular bottom plate 2 having an enlarged area at the end of a straight pipe 1.
The excavation surface of the ceramic circular bottom plate 2 is provided with a steel excavation blade 3, and the upper surface thereof has a circular projection 4 integrally formed with the bottom plate 2, which covers the straight pipe 1 and is connected with bolts or the like. Further, on the upper surface of the bottom plate, the straight pipe 1 is inserted into the excavating case 5 with a steel brim, and the engaging projection 6 is engaged with the engaging groove 6 provided at the lower end of the excavating case 5. Thing 7
A straight pipe 1 inside the lower part of the excavation case 5
Since the guide plate 8 for centering is loaded, the engaging portions accurately mesh with each other. Also, the electromagnetic plate 10 suspended by free bolts via the spring 9 loaded at the upper end in the excavating case 5 is provided. Since the steel cap 11 loaded on the upper end of the inserted straight pipe 1 is magnetically attached and supported in the excavation case 5, when the construction machine moves, the expanded bottom pile is detached from the excavation case 5. There is no.
【００２０】図２は、掘進ケース５の回転用減速機１２
の脚が游合連結する掘進機昇降用リーダー１３に固定さ
れたブラケット１４と架装重機１５の油圧操作によるア
ーム１６の先端部とがピンで連結されたオプションタイ
プの掘進機で、掘進用ケース５上部に装填された回転用
減速機１２が掘進機昇降用リーダー１３又は重機１５に
架装されたウインチ１７のドラムから掘進機昇降用リー
ダー１３先端部の滑車を経て延長されたワイヤーにより
懸垂される、掘進ケース５内に拡底既成杭を装填した掘
進ケース５を所定の位置に移動し、回転稼働すると同時
にワイヤーをフリーにすることで掘進機は自重と掘進ケ
ース５に設けられた掘進用螺旋つばの掘進力によって下
降する、所定深度に達したら掘進ケース５を逆回転しウ
インチ１７を稼働してワイヤーを巻き取とると掘進ケー
ス５の掛合溝６は掛合突起物４から外れて拡底既成杭を
土中に残して上昇する。FIG. 2 shows a rotation speed reducer 12 of the excavating case 5.
An excavator of an optional type in which a bracket 14 fixed to a leader 13 for excavating and lowering the excavator and a tip end of an arm 16 operated by a hydraulic operation of the body laying machine 15 are connected by pins. 5 The rotation speed reducer 12 loaded on the upper part is suspended by the wire extended from the drum of the excavator elevating leader 13 or the winch 17 mounted on the heavy equipment 15 via the pulley at the tip of the excavator elevating leader 13. The excavator, in which the excavated prefabricated pile is loaded in the excavator case 5, is moved to a predetermined position, and the excavator is rotated by itself and the wire is free, so that the excavator has its own weight and the excavation spiral provided in the excavator case 5. It descends by the excavation force of the brim. When the predetermined depth is reached, the excavation case 5 is rotated in the reverse direction and the winch 17 is operated to take up the wire. Off the engagement projection 4 rises leaving 拡底 prefabricated pile into the soil.
【００２１】図４は、拡底杭の直軸パイプ１を鋼管或い
は硬質塩ビ管等に複数個の通水孔１８を設けた通水パイ
プ１９とし、通水パイプ１９に透水材パイプ２０を覆合
して、排水溝ピット２１等を利用して地下に埋設し、雨
水を地下に浸透させる透水管とする、側溝や舗装面を流
動する雨水は多くのゴミを含んでいるため、排水ピット
２１内にはゴミ回収用バスケット２２を交換部品として
設置する、図５は図４と全く同じ方法で地震時の地下間
隙水或いは地下水を地上に噴出させて液状化防止を目的
とした拡底既成杭応用の実施例である。FIG. 4 shows a straight pipe 1 of an expanded pile as a water pipe 19 provided with a plurality of water holes 18 in a steel pipe or a rigid PVC pipe or the like, and a water permeable pipe 20 is covered with the water pipe 19. The pit 21 is buried underground using the drainage pit 21 and the like, and is used as a water permeable pipe that allows rainwater to penetrate into the underground. 5 is installed as a replacement part, and FIG. 5 shows the same method as that of FIG. This is an example.
【００２２】[0022]
【発明の効果】杭基礎は、深部に存在する支持地盤を構
造物の基礎として利用するため、その支持層まで杭を打
設するものである、支持層が比較的浅部に存在する場合
は、余り問題はないが、軟弱地盤が連続して厚く堆積し
ている地盤等においては、一般には、摩擦杭による群
杭、或いは現場拡底杭（球根工法）等を打設して杭の支
持力を増加させるように努力している、各々の方法は、
それなりの特徴を持っているのであるが、負の周面摩擦
力による沈下であるとか、現場造成による拡底杭工法は
現場土を骨材とした混練法で拡底部の強度のバラツキも
あり、形状精度の確認方法等も十分とは言えないなど工
法自体にも問題があった。According to the present invention, a pile foundation is used for driving a pile up to a support layer in order to use a support ground existing in a deep part as a foundation of a structure. Although there is not much problem, in the case of soil where soft ground is continuously piled up thickly, in general, pile piles using friction piles or cast-in-place expanded piles (bulb construction method) are used to support piles. Each method strives to increase the
Although it has a certain characteristic, it is said that the settlement is caused by negative peripheral frictional force, or the expanded pile method by on-site construction is a kneading method using aggregated soil at the site, and there is variation in the strength of the expanded portion. There was also a problem with the construction method itself, such as the method of checking the accuracy was not sufficient.
【００２３】本発明によれば、拡底杭の全てを工場で生
産することによって、底版の形状や強度及び直軸部の断
面や材質等に於いて設計値を正確に守ことができる万全
で安心した基礎杭となる、このために、地盤強度に対応
した材質や形状及び強度の選択が可能であるために無駄
がなく経済的な基礎杭となる、また、杭の埋設施工機は
掘進機をオプションとして従来の汎用重機を利用する事
ができるため、極めて簡易で経済的な拡底既成杭と埋設
機を提供することができる。According to the present invention, by producing all of the expanded piles at the factory, the design values can be accurately maintained in the shape and strength of the bottom slab, the cross section and the material of the straight shaft portion, etc. The foundation pile will be a reinforced foundation pile. For this reason, it is possible to select the material, shape and strength corresponding to the ground strength, so that it will be an economical foundation pile without waste. Since a conventional general-purpose heavy machine can be used as an option, it is possible to provide an extremely simple and economical expanded pile and buried machine.
【図１】鋼製つば付掘進ケースに拡底杭をセットした側
断面図である。FIG. 1 is a side cross-sectional view in which an expanded pile is set in a steel brim excavation case.
【図２】拡底杭底版掛合突起物と掘進ケース下端部掛合
溝の関連拡大図。FIG. 2 is a related enlarged view of an enlarged pile bottom plate engaging projection and a dug case lower end engaging groove.
【図３】鋼製つば付掘進ケースを汎用重機に架装した埋
設機。FIG. 3 shows a burial machine in which a digging case with a steel brim is mounted on a general-purpose heavy machine.
【図４】雨水の地下還元用透水パイプに応用した側断面
図。FIG. 4 is a side sectional view applied to a permeable pipe for rainwater underground reduction.
【図５】地震時の地下間隙水や地下水を地上に噴出する
透水パイプに応用した側断面図。FIG. 5 is a side sectional view applied to a water-permeable pipe that spouts underground pore water and groundwater during an earthquake to the ground.
【図６】直軸パイプ内に鋼製支柱を立て鉄筋コンクリー
トで固定した擁壁の模式図及び拡底既成杭の拡大断面
図。FIG. 6 is a schematic view of a retaining wall in which a steel column is erected in a straight pipe and fixed with reinforced concrete, and an enlarged cross-sectional view of an expanded bottom pile.
１ 直軸 ２６ ＰＣパ
イル ２ 円形底版 ２７ 擁壁 ３ 掘削刃 ４ 円形突起物 ５ 掘進ケース ６ 掛合溝 ７ 掛合用突起物 ８ ガイド板 ９ スプリング １０ 電磁版 １１ 鋼製キャップ １２ 減速機 １３ 昇降リーダー １４ 連結用ブラケット １５ 架装重機 １６ アーム １７ ウインチ １８ 通水孔 １９ 通水パイプ ２０ 透水材パイプ ２１ 排水ピット ２２ ゴミ回収バスケット ２３ マンホール ２４ 擁壁用支柱 ２５ 鉄筋コンクリートDESCRIPTION OF SYMBOLS 1 Straight axis 26 PC pile 2 Circular bottom plate 27 Retaining wall 3 Drilling blade 4 Circular projection 5 Excavation case 6 Engagement groove 7 Engagement projection 8 Guide plate 9 Spring 10 Electromagnetic plate 11 Steel cap 12 Reduction gear 13 Elevating leader 14 Connection Brackets 15 Heavy equipment 16 Arms 17 Winches 18 Water holes 19 Water pipes 20 Water permeable material pipes 21 Drain pits 22 Garbage collection baskets 23 Manholes 24 Posts for retaining walls 25 Reinforced concrete
Claims (2)
に円形版に対して小径の円形突起物を具えて、直軸パイ
プを覆入しボルトで連結した構成の拡底既成杭で、更
に、円形版上面に掛脱可能の掛合突起物を設け、鋼製つ
ば付掘進機ケース内に直軸部を挿入して掘進機を回転稼
働することで、掘進機ケース下端部に設けられた掛合溝
と円形版の掛合突起物とが掛け合わされて、掘進機の自
重とつばの推進力により直軸部に回転負荷を与えずに拡
底杭を地中に埋設する事ができる、所定深さに達したら
掘進機を逆回転させ、掘進機を懸垂するワイヤー用ウイ
ンチを稼働して巻き上げると掛合部は解除されて、拡底
既成杭を土中に残して掘進機は上昇する、直軸の曲げ強
度を必要とする場合には埋設後、直軸パイプ内にコンク
リート或いは鉄筋コンクリートを充填して補強する事が
できることを特徴とする拡底既成杭と埋設機。A circular plate having an excavating blade on the lower surface, a circular projection having a small diameter with respect to the circular plate at the center of the upper surface, a straight-bottomed pipe is inserted and connected by bolts, and is a prefabricated expanded bottom pile. In addition, by providing a hookable projection that can be hooked and unlocked on the upper surface of the circular plate, the straight shaft portion is inserted into the excavator case with a steel collar, and the excavator is rotated and operated, thereby being provided at the lower end of the excavator case. The engaging groove and the engaging projection of the circular plate are engaged with each other, and the expanded pile can be buried in the ground without applying a rotating load to the straight shaft part by the weight of the excavator and the propulsive force of the collar. When the excavator is reached, the excavator is rotated in the reverse direction, and when the winch for the wire that suspends the excavator is operated and hoisted up, the hook is released, and the excavator rises while leaving the preformed expanded pile in the soil. If bending strength is required, after embedding, concrete or reinforced concrete拡底 prefabricated pile and embedded device, characterized in that can be reinforced by filling the cleat.
複数の通水孔を穿ち合成樹脂等の腐食透水パイプを覆入
して、土中に埋設して雨水を地下に浸透させ、地震時に
は地盤間隙水や地下水を土砂と分離して地上に噴出させ
地盤液状化を防止する事ができる土中通水パイプ杭に応
用することを特徴とする拡底既成杭と埋設機。2. A plurality of water holes are drilled in the straight pipe of the prefabricated pile according to claim 1, and a corrosive water-permeable pipe made of synthetic resin or the like is covered, and buried in the soil to allow rainwater to permeate underground. An expanded bottom pile and burial machine, which is applied to a soil penetrating pipe pile that can separate ground pore water and groundwater from earth and sand during an earthquake and eject it to the ground to prevent ground liquefaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36610097A JPH11166231A (en) | 1997-12-04 | 1997-12-04 | Bottom widening existing pile and embedding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36610097A JPH11166231A (en) | 1997-12-04 | 1997-12-04 | Bottom widening existing pile and embedding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11166231A true JPH11166231A (en) | 1999-06-22 |
Family
ID=18485929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36610097A Pending JPH11166231A (en) | 1997-12-04 | 1997-12-04 | Bottom widening existing pile and embedding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11166231A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006263523A (en) * | 2005-03-22 | 2006-10-05 | Tokyu Construction Co Ltd | Stabilizing method and apparatus for waste disposal facility |
| JP2007070954A (en) * | 2005-09-09 | 2007-03-22 | Asahi Kasei Construction Materials Co Ltd | Burial device of venting pipe, burial method and stabilized method of waste |
| JP2007098258A (en) * | 2005-10-04 | 2007-04-19 | Asahi Kasei Construction Materials Co Ltd | Apparatus for burying air pipe, burying method, and method for stabilizing waste |
| JP2007100363A (en) * | 2005-10-04 | 2007-04-19 | Asahi Kasei Construction Materials Co Ltd | Device and method for embedding vent pipe, and waste stabilizing method |
| JP2007270527A (en) * | 2006-03-31 | 2007-10-18 | Asahi Kasei Construction Materials Co Ltd | Pumping well embedding method |
| JP2008272695A (en) * | 2007-05-02 | 2008-11-13 | Asahi Kasei Construction Materials Co Ltd | Burying apparatus |
| JP2014005597A (en) * | 2012-06-21 | 2014-01-16 | Hinode Ltd | Floatation prevention pile for underground structure and floatation prevention method for underground structure |
| CN105544579A (en) * | 2015-12-04 | 2016-05-04 | 黄国庆 | Construction method for pile foundation |
-
1997
- 1997-12-04 JP JP36610097A patent/JPH11166231A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006263523A (en) * | 2005-03-22 | 2006-10-05 | Tokyu Construction Co Ltd | Stabilizing method and apparatus for waste disposal facility |
| JP2007070954A (en) * | 2005-09-09 | 2007-03-22 | Asahi Kasei Construction Materials Co Ltd | Burial device of venting pipe, burial method and stabilized method of waste |
| JP2007098258A (en) * | 2005-10-04 | 2007-04-19 | Asahi Kasei Construction Materials Co Ltd | Apparatus for burying air pipe, burying method, and method for stabilizing waste |
| JP2007100363A (en) * | 2005-10-04 | 2007-04-19 | Asahi Kasei Construction Materials Co Ltd | Device and method for embedding vent pipe, and waste stabilizing method |
| JP2007270527A (en) * | 2006-03-31 | 2007-10-18 | Asahi Kasei Construction Materials Co Ltd | Pumping well embedding method |
| JP2008272695A (en) * | 2007-05-02 | 2008-11-13 | Asahi Kasei Construction Materials Co Ltd | Burying apparatus |
| JP2014005597A (en) * | 2012-06-21 | 2014-01-16 | Hinode Ltd | Floatation prevention pile for underground structure and floatation prevention method for underground structure |
| CN105544579A (en) * | 2015-12-04 | 2016-05-04 | 黄国庆 | Construction method for pile foundation |
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