JP2850652B2 - Construction method of embedded pile root consolidation part - Google Patents
Construction method of embedded pile root consolidation partInfo
- Publication number
- JP2850652B2 JP2850652B2 JP19113992A JP19113992A JP2850652B2 JP 2850652 B2 JP2850652 B2 JP 2850652B2 JP 19113992 A JP19113992 A JP 19113992A JP 19113992 A JP19113992 A JP 19113992A JP 2850652 B2 JP2850652 B2 JP 2850652B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- pile
- ground
- cement
- consolidation part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007596 consolidation process Methods 0.000 title claims description 22
- 238000010276 construction Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 27
- 239000007924 injection Substances 0.000 claims description 27
- 239000004568 cement Substances 0.000 claims description 26
- 239000008267 milk Substances 0.000 claims description 16
- 210000004080 milk Anatomy 0.000 claims description 16
- 235000013336 milk Nutrition 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 239000000440 bentonite Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 238000009430 construction management Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000004572 hydraulic lime Substances 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000011412 natural cement Substances 0.000 description 1
- 208000012978 nondisjunction Diseases 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は埋込み杭根固め部の施工
方法に関し、特に、セメント系硬化材からなる注入材を
杭体下端部の地盤と混合し、杭径より大きい球根状の固
化体を形成して支持力を確保する埋込み杭根固め部の施
工方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing an embedded pile root consolidation part, and more particularly to a method of mixing a cement-based hardening material with the ground at the lower end of a pile to form a bulbous solidified body having a diameter larger than the pile diameter. The present invention relates to a method of constructing a buried pile root consolidation part for forming bearings and securing bearing capacity.
【０００２】[0002]
【従来の技術】既製杭を打設して杭基礎を形成する工法
の一種として埋込み杭工法が知られている。この工法
は、プレボーリング工法、中堀り工法、ジェット工法等
により、地盤に掘削した孔に、あるいは杭中空部に掘削
機具を挿入して杭先端の地盤を掘削しながら既製杭を設
置するものである。そして、この工法では、支持力を確
保するため、杭を所定の支持地盤まで設置した後に、モ
ンケンや油圧ハンマーで打撃する最終打撃工法と注入材
を杭の下端部に注入固化させる根固め工法のいずれかが
採用されるが、根固め工法は最終打撃工法に比較して、
低騒音、低振動で施工することができるという利点を有
する。2. Description of the Related Art An embedded pile method is known as one type of a method for forming a pile foundation by placing a ready-made pile. In this method, a pre-boring method, a middle boring method, a jet method, etc. are used to insert a drilling tool into a hole excavated in the ground or into a hollow part of a pile and excavate the ground at the tip of the pile to install a ready-made pile. is there. And, in this method, in order to secure the supporting force, after the pile is installed to the predetermined supporting ground, the final striking method of hitting with a monken or a hydraulic hammer and the root consolidation method of injecting and solidifying the injection material at the lower end of the pile Either one is adopted, but the root consolidation method is
It has the advantage that it can be constructed with low noise and low vibration.
【０００３】しかし根固め工法では、地盤を削孔するこ
とにより杭の周辺および先端部の地盤にゆるみが発生し
て支持力が低下するため、図１に示すように、杭体１の
下端部周囲の支持地盤２に注入材を、例えば注入ロッド
３の先端から高圧噴射しながら該ロッド３を上下させる
方法、攪拌羽根のついた注入ロッドの先端から低圧吐出
しながら土と混合攪拌する方法等により注入混合し、杭
体下端部に杭径より大きい球根状の固化体４を形成して
支持力を確保する方法が主として採用されている。この
ような方法を施工するには、設計時に考えている範囲に
注入材が十分に行き渡り固化体の強度の変動が小さいこ
と、杭体と根固め部との一体化及び杭体の先端閉塞が確
実に行われていること、伏流水等により注入材の流出が
ないことなどが必要である。[0003] However, in the consolidation method, drilling of the ground causes loosening of the ground at the periphery and at the tip of the pile, thereby reducing the supporting force. As shown in FIG. the injection member to the support ground 2 around, for example, a method in which the rod 3 with high-pressure injection from the tip of the injection rod 3 is vertically, a method of mixing and stirring with the soil while the low-pressure discharge from the tip of the injection rod had One of the stirring blade For example, a method of forming a bulb-shaped solid body 4 larger than the diameter of the pile at the lower end of the pile body to ensure the supporting force is mainly adopted. In order to carry out such a method, it is necessary to ensure that the injected material sufficiently spreads within the range considered at the time of design, the fluctuation of the strength of the solidified body is small, the integration of the pile body and the solidification part, and the tip end of the pile body is blocked. It is necessary to ensure that it is performed reliably and that there is no outflow of the injected material due to underflow water.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、かかる
従来の注入材を混合注入する方法では、以下のような欠
点があった。However, the conventional method of mixing and injecting the injection material has the following disadvantages.
【０００５】すなわち、施工対象地盤の伏流水の流速が
大きいと注入材が流出して所定の品質の根固め部を施工
することができないという問題があった。また、通常は
注入材の水セメント比が大きいためブリージングやレイ
タンスが多く、したがって杭体と根固め部との一体化を
確保することが困難であるとともに、注入材の水分が分
離して均一な根固め部を形成することができないという
問題があった。なお、従来もこのような欠点を補う方法
としてベントナイトを添加する方法が採用された例もあ
るが、ベントナイトの添加量が多いと根固め部の強度が
大巾に減少するといった問題点がある。[0005] That is, when the flow velocity of the underground water of the ground to be constructed is high, the injected material flows out, so that there is a problem that the consolidation part of a predetermined quality cannot be constructed. In addition, since the water-cement ratio of the injection material is usually large, there are many breathing and latencies, so it is difficult to secure the integration between the pile and the consolidation part, and the water of the injection material is separated and uniform. There has been a problem that a root consolidation part cannot be formed. Although a method of adding bentonite has conventionally been adopted as a method of compensating for such a defect, there is a problem that if the amount of bentonite is large, the strength of the root consolidation portion is greatly reduced.
【０００６】さらに、根固め部の施工が地中の深い位置
で行われるため、その品質を確認することができず、し
たがって攪拌翼の回転、ロッドの上下動、注入材の注入
量、注入圧、注入のタイミング等に関する施工管理の状
況から根固め部の品質を想定せざるを得ないが、従来の
注入材ではこれらの施工管理の状況によって品質が変動
し易いため、品質が十分に確保されているか否かについ
て常に不安が残るという問題があった。[0006] Further, since the construction of the consolidation portion is performed at a deep position in the ground, its quality cannot be confirmed. Therefore, the rotation of the stirring blade, the vertical movement of the rod, the injection amount of the injection material, and the injection pressure can be prevented. However, it is inevitable to assume the quality of the consolidation part from the situation of construction management related to the timing of injection, etc. There was a problem that there was always anxiety about whether or not it was.
【０００７】そこで、本発明は上記問題点を解消するべ
くなされたもので、伏流水の流速が大きな地盤であって
も注入材の流出を生じることなく、また、ブリージング
やレイタンスを減少するとともに注入材の水分の分離を
防いで均一な根固め部を形成し、さらに、従来よりも品
質の変動が少なくかつベントナイトの多量な添加による
強度低下を生じさせることのない埋込み杭根固め部の施
工方法を提供することを目的とする。Accordingly, the present invention has been made to solve the above-mentioned problems, and does not cause the injection material to flow out even on the ground where the flow velocity of the underflow water is large, and also reduces the breathing and the latencies while also improving the injection. Construction method of embedded pile root consolidation part that forms uniform root consolidation part by preventing moisture separation of materials, and has less variation in quality than before and does not cause strength deterioration due to large addition of bentonite The purpose is to provide.
【０００８】[0008]
【課題を解決するための手段】本発明は上記目的を鑑み
てなされたもので、その要旨は、埋込み杭工法により地
中に打設した杭体の下端部における支持力を確保するた
めの根固め部の施工方法において、セメントミルクおよ
び水に水中不分離性混和剤を添加した注入材を根固め部
の地盤と混合することを特徴とする埋込み杭根固め部の
施工方法にある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned objects, and has as its gist a root for securing a supporting force at a lower end portion of a pile body which is driven into the ground by an embedded pile method. A method for constructing an embedded pile, comprising: mixing an injection material obtained by adding a water-immiscible admixture to cement milk and water with the ground of the embedded compaction. In the way.
【０００９】ここで、セメントミルクは、例えばポルト
ランドセメント，水硬性石灰，天然セメント等の単味セ
メント，高炉セメント，シリカセメント，フライアッシ
ュセメント等の混合セメント，アルミナセメント，超速
硬セメント等の特殊セメントなどのミルクを挙げること
ができる。Here, cement milk is, for example, plain cement such as Portland cement, hydraulic lime, natural cement, etc., mixed cement such as blast furnace cement, silica cement, fly ash cement, etc., special cement such as alumina cement, ultra-rapid hardening cement, etc. And milk .
【００１０】また、前記セメントミルクおよび水に添加
する水中不分離性混和剤とは、セメントミルクのアルカ
リ性によって粘性を発揮するもので、例えば、ポリビニ
ルアルコール、ポリ酸化エチレン、カルボキシメチルセ
ルロース、メチルセルロース、ヒドロキシメチルセルロ
ース、ポリアクリルアミドなどの高分子物質等を用いる
ことができる。The water-immiscible admixture to be added to the cement milk and the water is one that exhibits a viscosity due to the alkalinity of the cement milk . Examples thereof include polyvinyl alcohol, polyethylene oxide, carboxymethylcellulose, methylcellulose, and hydroxymethylcellulose. And a high-molecular substance such as polyacrylamide.
【００１１】また、水中不分離性混和剤の添加量は、水
に対し重量比で０．３〜１．２％とすることが好まし
い。添加量が１．２％を越えると粘性が過大となり、
０．３％より少ないと増粘効果が少ないためいずれも好
ましくない。The amount of the water-immiscible admixture is preferably 0.3 to 1.2% by weight based on water. If the addition amount exceeds 1.2%, the viscosity becomes excessive,
If the amount is less than 0.3%, the effect of increasing the viscosity is small, and both are not preferred.
【００１２】また、本発明の埋込み杭根固め部の施工方
法では、根固め部の地盤と混合する注入材として、セメ
ントミルクおよび水に水中不分離性混和剤とＡＥ減水剤
とを添加したものを使用することもできる。Further, in the method for constructing an embedded pile root consolidation part according to the present invention, as an injection material to be mixed with the ground of the root consolidation part, cement milk and water are added with an inseparable admixture in water and an AE water reducing agent. Can also be used.
【００１３】ここで、前記セメントミルクに添加するＡ
Ｅ減水剤とは、セメントミルクの分散性を高めるととも
に注入材の流動性を向上させるもので、例えばリグニン
スルフォン酸塩、リグニンポリオール複合体等を用いる
ことができる。Here, A to be added to the cement milk
The E water reducing agent enhances the dispersibility of the cement milk and improves the fluidity of the injection material. For example, a lignin sulfonate, a lignin polyol complex, or the like can be used.
【００１４】また、ＡＥ減水剤の添加量は、セメントミ
ルクに対し重量比で２．０〜３．０％とすることが好ま
しい。[0014] In addition, the amount of AE water-reducing agent, cement Mi
It is preferable that 2.0 to 3.0 percent by weight with respect to torque.
【００１５】[0015]
【作用】本発明の埋込み杭根固め部の施工方法によれ
ば、セメントミルク及び水に添加される水中不分離性混
和剤は、セメントミルクのアルカリ性と反応して注入材
に粘性を付与する。そして、注入材は、粘性を付与され
ることにより、伏流水の流速の大きい地盤においても流
出することなく、また、ブリージングやレイタンスの発
生及び注入材の水分の分離を防止して均一な根固め部を
形成することを可能にする。According to the method for embedding the embedded pile roots of the present invention, the water-immiscible admixture added to the cement milk and the water reacts with the alkalinity of the cement milk to impart viscosity to the injection material. The injected material is provided with viscosity so that it does not flow out even on the ground where the flow velocity of the underflow water is large, and also prevents the occurrence of breathing and latencies and the separation of the moisture of the injected material, thereby uniformly consolidating the root material. Allows the formation of parts.
【００１６】また、セメントミルクに水中不分離性混和
剤を添加した注入材に、さらにＡＥ減水剤を添加すれ
ば、ＡＥ減水剤は、セメントミルクの分散性を高めると
ともに、注入材の流動性を向上する。Further, if an AE water reducing agent is further added to the injectable material obtained by adding a water-immiscible admixture to cement milk , the AE water reducer enhances the dispersibility of the cement milk and increases the fluidity of the injectable material. improves.
【００１７】[0017]
【実施例】支持層付近に伏流水のある地盤において、直
径約１０００ｍｍの鋼管杭を中堀り工法により所定の深
度まで打設した後、普通ポルトランドセメントに水を加
えて攪拌しさらに水中不分離性混和剤及びＡＥ減水剤を
添加した注入材を圧送し、攪拌翼によって先端地盤を攪
拌しつつ注入材を噴射して根固め部の施工を行なった。
なお、この実施例では、注入材の噴射のタイミング等に
つき従来のような厳格な管理を行なうことなく施工を行
なった。また、根固め部の固化性状を直接確認すべく、
杭中空部よりコアボーリングを行ない根固め部の上中下
の３深度よりコアを採取して一軸圧縮試験を行なった。[Example] In a ground with underflow water near the support layer, a steel pipe pile having a diameter of about 1000 mm was cast into a predetermined depth by the middle digging method, and then water was added to ordinary Portland cement, followed by stirring. The injected material to which the admixture and the AE water reducing agent were added was fed under pressure, and the injected material was injected while stirring the ground at the tip with a stirring blade to construct a reinforced portion.
In this embodiment, the construction was performed without strict control of the injection material injection timing and the like as in the related art. Also, in order to directly check the solidification properties of the
Core boring was performed from the hollow part of the pile, and cores were sampled from three depths above, below, and under the root consolidation part and subjected to a uniaxial compression test.
【００１８】使用した注入材の配合を、実施例Ａ及び実
施例Ｂとして表１に示す。なお、実施例Ａは基本的な配
合によるものであり、実施例Ｂは水セメント比を４５％
に低減した場合の配合の一例を示すものである。Table 1 shows the compositions of the injection materials used as Examples A and B. Example A is based on the basic composition, and Example B has a water cement ratio of 45%.
It illustrates an example of a formulation in the case of reduced.
【００１９】また、水中不分離性混和剤及びＡＥ減水剤
を添加しない従来の注入材の配合を比較例１として表１
に示す。The composition of a conventional injection material without the addition of an inseparable admixture in water and an AE water reducing agent is shown in Table 1 as Comparative Example 1.
Shown in
【００２０】[0020]
【表１】 さらに、表２には、実施例Ａ及び比較例１の注入材を用
いて施工した杭の根固め部より採取した、上中下の３深
度の試料について行なった一軸圧縮試験の試験結果を示
す。[Table 1] Furthermore, Table 2 shows the test results of the uniaxial compression test performed on the samples at the three depths of the upper, middle, and lower parts, which were collected from the piled part of the pile constructed using the injection material of Example A and Comparative Example 1. .
【００２１】[0021]
【表２】 これらの結果から、本発明の根固め部の施工方法によれ
ば、従来のような厳しい施工管理を要することなく通常
の管理で容易に所定の品質の根固め部を施工できること
が判明した。[Table 2] From these results, it has been found that according to the method for constructing a consolidation part of the present invention, a consolidation part of a predetermined quality can be easily constructed by ordinary management without requiring strict construction management as in the related art.
【００２２】また、実施例Ａの配合により試験杭を施工
し、地表近くに根固め部を形成した後に当該根固め部を
掘り出して固化性状の調査を行なった。この調査の結
果、本発明の根固め部の施工方法によれば、ブリージン
グやレイタンスの発生等が少なく均一かつ高品質の根固
め部が得られることが判明した。Further, a test pile was constructed according to the composition of Example A, and after forming a solidified portion near the surface of the ground, the solidified portion was dug out to investigate the solidification properties. As a result of this investigation, it has been found that according to the method for constructing a rooted portion of the present invention, a uniform and high-quality rooted portion can be obtained with less occurrence of breathing and latency.
【００２３】[0023]
【発明の効果】以上に説明したように、本発明の埋込み
杭根固め部の施工方法は、セメントミルクおよび水に水
中不分離性混和剤を添加した注入材を根固め部の地盤と
混合するので、伏流水の流速が大きな地盤であっても注
入材の流出を生じることがなく、また、ブリージングや
レイタンスを減少するとともに注入材の水分の分離を防
いで均一な根固め部を容易に形成することができ、ま
た、従来のような厳しい施工管理を要することなく容易
に施工することができる。As described above, according to the present invention, the construction method of embedding Kuine firm part of the present invention, mixing the injected material added with water nondisjunction of admixture to cement milk Contact and water and soil in the root hardened portion Therefore, even if the flow velocity of the underground water is large, the injected material does not flow out even if the ground has a large flow rate. It can be formed, and can be easily constructed without requiring strict construction management as in the related art.
【００２４】また、前記注入材にさらにＡＥ減水剤を添
加したものを使用すれば、セメントミルクの分散性を高
めるとともに、注入材の流動性を向上して、さらに均一
な根固め部を形成することができる。[0024] Further, if a material obtained by further adding an AE water reducing agent to the above-mentioned injection material is used, the dispersibility of the cement milk is increased, and the flowability of the injection material is improved, so that a more uniform rooted portion is formed. be able to.
【図１】本発明の埋込み杭根固め部の施工方法を適用す
る、埋込み杭工法の概要を示す説明図である。FIG. 1 is an explanatory view showing an outline of an embedded pile construction method to which a method for constructing an embedded pile root compaction part of the present invention is applied.
１ 杭体 ２ 支持地盤 ３ 注入ロッド ４ 固化体 Reference Signs List 1 pile body 2 support ground 3 injection rod 4 solidified body
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) E02D 5/44 E02D 5/50 E02D 5/54──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) E02D 5/44 E02D 5/50 E02D 5/54
Claims (2)
の下端部における支持力を確保するための根固め部の施
工方法において、セメントミルクおよび水に水中不分離
性混和剤を添加した注入材を根固め部の地盤と混合する
ことを特徴とする埋込み杭根固め部の施工方法。Claims: 1. A method for constructing a stiffening portion for securing a supporting force at a lower end portion of a pile body driven into the ground by an embedded pile method, wherein a water-immiscible admixture is added to cement milk and water. A method for constructing an embedded pile root consolidation part, which comprises mixing an injection material with the ground of a root consolidation part.
び水に水中不分離性混和剤とＡＥ減水剤とを添加したも
のを使用することを特徴とする請求項１に記載の埋込み
杭根固め部の施工方法。2. The method according to claim 1, wherein the injectable material is a mixture of cement milk and water to which an inseparable admixture in water and an AE water reducing agent are added. Construction method of embedded pile root consolidation part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19113992A JP2850652B2 (en) | 1992-07-17 | 1992-07-17 | Construction method of embedded pile root consolidation part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19113992A JP2850652B2 (en) | 1992-07-17 | 1992-07-17 | Construction method of embedded pile root consolidation part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0673729A JPH0673729A (en) | 1994-03-15 |
| JP2850652B2 true JP2850652B2 (en) | 1999-01-27 |
Family
ID=16269541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19113992A Expired - Fee Related JP2850652B2 (en) | 1992-07-17 | 1992-07-17 | Construction method of embedded pile root consolidation part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2850652B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011089666A1 (en) * | 2010-01-25 | 2011-07-28 | 株式会社テノックス | Method for building column replaced with hydraulic solidifying liquid material and device for constructing column replaced with hydraulic solidifying liquid material |
| KR101600477B1 (en) * | 2015-07-03 | 2016-03-07 | 광일종합건설 주식회사 | Top down construction method for developping stability through improved process of piller |
| JP7333291B2 (en) * | 2020-06-03 | 2023-08-24 | 鹿島建設株式会社 | Foundation foot protection structure and foundation foot protection method |
-
1992
- 1992-07-17 JP JP19113992A patent/JP2850652B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0673729A (en) | 1994-03-15 |
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