JP2002069992A - Confirming method of pile supporting force - Google Patents
Confirming method of pile supporting forceInfo
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- JP2002069992A JP2002069992A JP2000256522A JP2000256522A JP2002069992A JP 2002069992 A JP2002069992 A JP 2002069992A JP 2000256522 A JP2000256522 A JP 2000256522A JP 2000256522 A JP2000256522 A JP 2000256522A JP 2002069992 A JP2002069992 A JP 2002069992A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、杭の支持力確認方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for checking a pile supporting force.
【０００２】[0002]
【従来の技術】杭の支持力確認試験として、従来より、
載荷試験や杭打ち試験などが知られている。2. Description of the Related Art Conventionally, as a test for confirming the bearing capacity of a pile,
Loading tests and pile driving tests are known.
【０００３】載荷試験は、杭を施工した後、５〜１４日
程度養生し、それから、反力装置や加力装置、計測装置
を設置して杭頭に載荷することで、極限支持力や基準支
持力を確認するものである。この載荷試験は、杭の極限
支持力まで精度良く把握できるという利点を有する。In the loading test, after the pile is constructed, the pile is cured for about 5 to 14 days, and then a reaction force device, a load device, and a measuring device are installed and loaded on the pile head to obtain the ultimate bearing capacity and the standard. This is to check the bearing capacity. This loading test has the advantage that the ultimate bearing capacity of the pile can be accurately grasped.
【０００４】また、杭打ち試験は、杭頭にハンマーによ
る打撃を与え、打撃エネルギーと、杭の貫入に要する仕
事量とが等しいという条件から、杭の支持力を推定する
ものである。In the pile driving test, a pile head is hit with a hammer, and the bearing capacity of the pile is estimated from the condition that the impact energy is equal to the amount of work required to penetrate the pile.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
載荷試験では、杭の施工と載荷試験とを期間をおいて別
々に行うため、載荷試験において、反力装置や加力装置
などの試験用の諸設備を別途に用意して試験を行わなけ
ればならず、試験コストが高くつくと共に、杭の施工の
工期が載荷試験も含めて考えると長くかかるという問題
があった。従って、比較的大きな建築物の工事では実施
されるが、例えば住宅などの小規模建築物では、実施さ
れることはほとんどなかった。However, in the above-mentioned loading test, the construction of the pile and the loading test are separately performed after a certain period of time. Various facilities must be prepared separately for the test, and the test cost is high, and the construction period of the pile is long, including the load test. Therefore, it is carried out in the construction of a relatively large building, but is rarely carried out in a small building such as a house.
【０００６】しかも、従来の載荷試験は、上記のよう
に、試験コストや工期の関係で、すべての杭に対して試
験を行うことは実際上困難であり、抜き取り的な試験に
ならざるを得なかった。In addition, as described above, it is practically difficult to perform tests on all piles in the conventional load test due to the test cost and the construction period. Did not.
【０００７】また、上記の杭打ち試験では、上記の載荷
試験の場合のような諸設備は不要であるが、試験に騒音
を伴い、また、動的な貫入抵抗から静的な支持力を推定
しようとするところに基本的な無理があった。Further, in the above-mentioned pile driving test, various facilities as in the above-mentioned loading test are unnecessary, but the test involves noise and the static bearing force is estimated from the dynamic penetration resistance. There was a basic impossibility in trying.
【０００８】本発明は、上記のような従来の問題点に鑑
み、静的な杭頭載荷によるものでありながら、試験をコ
スト的に有利に行うことができ、しかも、試験も含めた
杭の施工の工期を大幅に短縮することができる杭の支持
力確認方法を提供することを課題とする。The present invention has been made in view of the above-mentioned conventional problems, and the test can be carried out in a cost-effective manner while using a static pile head loading. An object of the present invention is to provide a method for confirming a bearing capacity of a pile, which can significantly reduce a construction period.
【０００９】[0009]
【課題を解決するための手段】上記の課題は、杭打ち機
で杭を打ち込んだ後、この杭打ち機で杭頭に所定の時間
載荷荷重を付与し、この載荷荷重による杭の沈下量を測
定することを特徴とする杭の支持力確認方法によって解
決される。The above object is achieved by driving a pile with a pile driver, applying a load to the pile head for a predetermined time with the pile driver, and determining the amount of settlement of the pile due to the load. The problem is solved by a method for checking the bearing capacity of a pile, which is characterized by measuring.
【００１０】この方法では、杭の打込みに使った杭打ち
機をそのまま載荷試験に使用し、杭打ち後、この杭打ち
機で杭頭に所定の時間加力載荷して支持力を確認するも
のであるから、別途に加力装置や反力装置などの試験用
の諸設備を必要とせず、そのため、試験をコスト的に非
常に有利に行うことができ、しかも、載荷試験も含めた
杭の施工の工期を大幅に短縮することができる。In this method, a pile driving machine used for driving a pile is used as it is for a loading test, and after the pile driving, a load is applied to a pile head by the pile driving machine for a predetermined time to confirm a supporting force. Therefore, it is not necessary to separately provide various testing equipment such as a loading device and a reaction force device, so that the test can be carried out very advantageously in terms of cost. The construction period can be significantly reduced.
【００１１】なお、本方法では、従来の載荷試験のよう
に、養生期間をおかないことに対する配慮をしておく必
要があるが、これは、予め設定した載荷荷重と載荷時間
に対する杭の許容沈下量を設定しておくことによって解
決することができる。In this method, as in the conventional loading test, it is necessary to pay attention to keeping the curing period short. However, this is because the allowable settling of the pile with respect to the preset loading load and loading time is required. This can be solved by setting the amount.
【００１２】複数本の杭のうち、少なくとも１本の杭に
ついて、杭頭に載荷荷重を付与した後、時間ｔを経過し
た時点でのその杭の沈下量ａ1を測定すると共に、時間
Ｔ（Ｔ＞ｔ）を経過した時点でのその杭の沈下量Ａ1を
測定し、しかる後、残りの杭の一部又は全部について、
杭頭に載荷荷重を上記の所定の時間ｔだけ付与し、この
載荷荷重による杭の沈下量ａ2を測定し、この測定沈下
量ａ2をもとに、ａ1とＡ1との関係から、載荷荷重を時
間Ｔ付与したときの沈下量Ａ2を推定する場合は、残り
の杭の一部又は全部については、載荷荷重を実際に時間
Ｔ付与しなくとも、時間ｔの載荷荷重のみで、時間Ｔ載
荷したときの沈下量Ａ2を精度良く推定することがで
き、従って、試験時間も含んだ杭の施工の工期を長くす
ることなく、残り杭のうちの多くあるいはすべてについ
ても載荷試験を実施することができて、信頼性の高い杭
の施工を実現していくことができる。After a load is applied to the pile head of at least one of the plurality of piles, the settlement amount a 1 of the pile at the time t is elapsed, and the time T ( T> t), the amount of settlement A 1 of the pile is measured, and then, for some or all of the remaining piles,
Pile the applied load imparted by a predetermined time t above, the subsidence a 2 piles according to the applied load is measured, on the basis of this measurement subsidence a 2, the relationship between a 1 and A 1 when estimating the subsidence a 2 when the applied load in time T granted, for some or all of the remaining pile, without actually time T grant applied load, only applied load time t , can be estimated accurately subsidence a 2 when the time T loading, therefore, without increasing the construction period of the construction of the pile including also test time, loading test many or for all of the remaining pile Can be implemented, and highly reliable pile construction can be realized.
【００１３】この場合に、残りの杭について、載荷荷重
を時間Ｔ付与したときの推定沈下量Ａ2を、時間ｔ載荷
したときの測定沈下量ａ2にＡ1／ａ1を乗じて算出する
場合は、載荷荷重を時間Ｔ付与したときの沈下量を、簡
易な計算で、精度良く推定することができる。In this case, for the remaining piles, the estimated settlement amount A 2 when the loading load is applied for the time T is calculated by multiplying the measurement settlement amount a 2 when the loading load is applied for the time t by A 1 / a 1. In this case, the settlement amount when the load is applied for the time T can be accurately estimated by a simple calculation.
【００１４】[0014]
【発明の実施の形態】次に、本発明の実施形態を図面に
基づいて説明する。Next, embodiments of the present invention will be described with reference to the drawings.
【００１５】本実施形態で行う杭打ちは、鋼管杭などに
よる鋼杭を用い、この杭を回転させながら地盤に圧入し
ていく、いわゆる回転圧入工法による杭打ちである。杭
打ち機には、杭の圧入力を感知する油圧式などによるロ
ードセンサーが備えられており、杭打ちは次のようにし
て行う。The pile driving performed in the present embodiment is a so-called rotary press-in method in which a steel pile such as a steel pipe pile is used and the pile is pressed into the ground while rotating. The pile driver is provided with a load sensor of a hydraulic type or the like that detects the pressure input of the pile, and the pile driving is performed as follows.
【００１６】即ち、図１（イ）（ロ）に示すように、試
験杭ないしは１本目の杭１の打込みにおいて、この杭１
を杭芯に建て込み、杭打ち機２で、所定の深度のところ
まで回転させながら圧入していく。杭打ち機２の自重の
みでは反力が不足するような場合には、オーガーを地中
に貫入するようにしてもよい。この圧入力値と地盤調査
データに基づいて、打ち止め荷重を設定し、この設定値
を残りの杭の打ち止め荷重として利用する。なお、５は
支持層である。That is, as shown in FIGS. 1A and 1B, when the test pile or the first pile 1 is driven,
Is piled into a pile core, and the pile driver 2 presses in while rotating to a predetermined depth. When the reaction force is insufficient with only the weight of the pile driver 2, the auger may penetrate the ground. A setting load is set based on the press-in value and the ground survey data, and the set value is used as a setting load for the remaining piles. In addition, 5 is a support layer.
【００１７】こうして１本目の杭１を打ち込んだ後、引
き続いて、この杭１に対して載荷試験を行う。載荷試験
の実施に際し、図２（イ）（ロ）に示すように、載荷に
よる杭１の沈下量を計測するため、杭１の頭部に測定用
のスケール３を取り付け、その側方にオートレベル４を
設置する。そして、この杭１の打込みに用いた同じ杭打
ち機２で、引き続き、杭１の頭部に載荷荷重Ｐを付与す
る。本実施形態では、載荷荷重Ｐを短期設計荷重として
いる。この１本目の杭１については、図３（イ）に示す
ように、載荷時間を３０分（本発明における時間Ｔに対
応）とし、１分（本発明における時間ｔに対応）経過時
のこの杭１の沈下量ａ1と、３０分経過時のこの杭１の
沈下量Ａ1とを測定する。なお、載荷荷重は、杭打ち機
２に備えられているロードセンサーなどで載荷中一定値
に保つことができる。After the first pile 1 has been driven in this way, a load test is subsequently performed on this pile 1. At the time of carrying out the loading test, as shown in FIGS. 2 (a) and 2 (b), in order to measure the amount of settlement of the pile 1 due to the loading, a measuring scale 3 is attached to the head of the pile 1 and an auto is mounted on the side thereof. Level 4 is installed. Then, the same pile driving machine 2 used for driving the pile 1 continuously applies the load P to the head of the pile 1. In the present embodiment, the load P is a short-term design load. As shown in FIG. 3A, the loading time of the first pile 1 is 30 minutes (corresponding to the time T in the present invention), and this loading time is 1 minute (corresponding to the time t in the present invention). and subsidence a 1 pile 1, for measuring the subsidence a 1 of the pile 1 during the elapsed 30 min. The load can be maintained at a constant value during loading by a load sensor or the like provided in the pile driver 2.
【００１８】そして、３０分経過時の杭１の沈下量Ａ1
と短期許容沈下量Ａ0とを比較し、Ａ 1がＡ0以下である
ことを確認する。短期許容沈下量Ａ0は、例えば、杭１
の外径ｄの３．５％とする。Then, the settlement amount A of the pile 1 after 30 minutes has elapsed.1
And short-term allowable settlement amount A0And A 1Is A0Is below
Make sure that Short-term allowable settlement A0For example, stake 1
3.5% of the outer diameter d.
【００１９】次いで、２本目の杭の打込みを行い、引き
続いて、この杭について杭打ち機をそのまま用いて載荷
試験を行う。この２本目の杭の載荷試験では、図３
（ロ）に示すように、載荷荷重Ｐは１本目の杭１の場合
と同じにするが、載荷時間については１分（本発明にお
ける時間ｔに対応）とする。そして、載荷開始から１分
経過した時点での杭の沈下量ａ2を測定し、この測定沈
下量ａ2に基づいて、１本目の杭１のａ1とＡ1との関係
から、載荷荷重を時間３０分付与したときの沈下量Ａ 2
を推定する。推定は、１本目の杭１のａ1とＡ1との関係
から各種方法によって行えばよいが、正確でかつ最も簡
便な方法として、測定沈下量ａ2にＡ1／ａ1を乗じて算
出するとよい。なお、１本目の杭１のａ1とＡ1との関係
からより正確な推定値を算出することのできる算式を用
いてＡ2を求めるようにしてもよいことはいうまでもな
い。こうして求めた推定沈下量Ａ2と短期許容沈下量Ａ0
とを比較し、Ａ2がＡ0以下であることを確認する。Next, the second pile is driven, and the pull is pulled.
Subsequently, the pile is loaded using the pile driver as it is.
Perform the test. In the loading test of this second pile,
As shown in (b), the load P is for the first pile 1.
But the loading time is 1 minute (in the present invention)
Time t). And one minute from the loading start
Settlement amount of pile at the time of passage aTwoAnd measure
Lower amount aTwoA of the first pile 11And A1Relationship with
From the amount of settlement A when a load is applied for 30 minutes Two
Is estimated. The estimation is a for the first pile 11And A1Relationship with
Can be performed by various methods, but it is accurate and simplest.
As a convenient method, the measured subsidence amount aTwoA1/ A1Multiply by
Good to get out. In addition, a of the first pile 11And A1Relationship with
Use a formula that can calculate a more accurate estimate from
ATwoNeedless to say,
No. Estimated settlement amount A thus obtainedTwoAnd short-term allowable settlement amount A0
And ATwoIs A0Make sure that:
【００２０】３本目以降の残りの杭についても、２本目
と同様に、杭打ちと載荷試験とを行っていく。こうして
すべての杭について支持力を確認していく。For the remaining piles after the third pile, pile driving and a loading test are performed in the same manner as the second pile. In this way, we confirm the bearing capacity of all piles.
【００２１】このように、上記の実施形態によれば、杭
１の打込みに使った杭打ち機２をそのまま載荷試験に使
用し、杭１の打込み後、この杭打ち機２で杭頭に載荷荷
重を付与して載荷試験を行うものであるから、従来の載
荷試験の場合のように、別途に加力装置や反力装置など
の試験用の諸設備を必要とせず、そのため、試験をコス
ト的に非常に有利に行うことができ、しかも、杭打ち後
に引き続いて載荷試験を行うものであるから、試験も含
めた杭の施工の工期を大幅に短縮することができる。As described above, according to the above embodiment, the pile driving machine 2 used for driving the pile 1 is used for the loading test as it is, and after driving the pile 1, the pile driving machine 2 loads the pile head. Since the load test is performed by applying a load, unlike the conventional load test, there is no need for additional testing equipment such as a load device and a reaction force device. Since the load test is performed continuously after the pile driving, the construction period of the pile including the test can be greatly reduced.
【００２２】加えて、上記の実施形態では、最初の杭１
については、３０分の載荷試験を行うが、２本目以降の
杭については載荷時間を１分としているから、すべての
杭に対して載荷試験を実施していくことができ、しか
も、それを短い工期で実施することができる。In addition, in the above embodiment, the first pile 1
For, the loading test is performed for 30 minutes, but the loading time is set to 1 minute for the second and subsequent piles, so that the loading test can be performed for all the piles, and the It can be implemented during the construction period.
【００２３】従って、例えば、これまでほとんど行われ
ていなかった住宅等の小規模建物の建築においても、杭
の支持力確認のための載荷試験をコストと時間をかける
ことなく簡易に行っていくことができ、建物の規模の大
小にかかわらず、信頼性の高い建物を提供していくこと
ができる。Therefore, for example, even in the construction of a small building such as a house, which has been rarely performed, a load test for confirming the supporting force of the pile should be easily performed without spending time and money. And provide a highly reliable building regardless of the size of the building.
【００２４】また、支持層５が傾斜している地盤などに
おいて、設計杭長と異なる杭長の杭が施工された場合
に、その杭についての支持力の確認も行うことができ
る。Further, when a pile having a pile length different from the designed pile length is constructed on the ground or the like where the support layer 5 is inclined, it is possible to confirm the supporting force of the pile.
【００２５】以上に、本発明の実施形態を示したが、本
発明はこれに限られるものではなく、発明思想を逸脱し
ない範囲で各種の変更が可能である。例えば、上記実施
形態では、載荷時間Ｔを３０分とし、載荷時間ｔを１分
としているが、Ｔ＞ｔの範囲で、種々の時間に設定して
よい。また、上記の実施形態では、最初の１本について
載荷時間をＴとしているが、最初の何本かについて載荷
時間をＴとし、残りの杭について載荷時間をｔとするよ
うにしてもよい。更に、上記の実施形態では、沈下量の
測定をスケール３とレベル４とを用いて行っているが、
杭打ち機２に沈下量測定機能をもたせるようにしてもよ
い。また、上記の実施形態では、載荷のための荷重をロ
ードセンサーで一定値に維持しているが、ロードセルや
データーローガーなどで載荷荷重の管理を行うようにし
てもよい。また、上記の実施形態では、載荷荷重を短期
設計荷重としたが、長期設計荷重であってもよいし、そ
の他、各種の設計荷重であってよい。また、杭は鋼杭以
外のものであってもよいし、杭打ちは回転圧入法以外の
方法で行ってもよい。また、支持杭であってもよいし、
摩擦杭であってもよい。Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the spirit of the invention. For example, in the above embodiment, the loading time T is set to 30 minutes, and the loading time t is set to 1 minute. However, various times may be set within a range of T> t. Further, in the above embodiment, the loading time is T for the first one, but the loading time may be T for some of the first piles and t for the remaining piles. Further, in the above embodiment, the measurement of the settlement amount is performed using the scale 3 and the level 4,
The pile driver 2 may be provided with a settlement amount measuring function. In the above embodiment, the load for loading is maintained at a constant value by the load sensor. However, the load may be managed by a load cell, a data logger, or the like. Further, in the above embodiment, the applied load is the short-term design load, but may be a long-term design load, or may be various other design loads. Further, the pile may be other than the steel pile, and the pile driving may be performed by a method other than the rotary press-fitting method. Also, it may be a support pile,
It may be a friction pile.
【００２６】[0026]
【発明の効果】本発明は、以上のとおりのものであるか
ら、静的な杭頭載荷によるものでありながら、試験をコ
スト的に有利に行うことができ、しかも、試験も含めた
杭の施工の工期を大幅に短縮することができる。The present invention is as described above, so that the test can be carried out in a cost-effective manner while using the static pile head loading. The construction period can be significantly reduced.
【図１】実施形態を示すもので、図（イ）は杭打ちの途
中の状態を示す断面側面図、図（ロ）は杭打ち完了後の
状態を示す断面側面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional side view showing an embodiment in the middle of pile driving, and FIG. 1 (b) is a cross-sectional side view showing a state after pile driving is completed.
【図２】図（イ）は載荷試験のための沈下量測定機器の
設置状態を示す断面側面図、図（ロ）は図（イ）の要部
拡大図である。FIG. 2A is a sectional side view showing an installation state of a sinking amount measuring device for a loading test, and FIG. 2B is an enlarged view of a main part of FIG.
【図３】図（イ）は一本目の杭の支持力確認方法の説明
図、図（ロ）は２本目以降の杭の支持力確認方法の説明
図である。FIG. 3 (a) is an explanatory diagram of a method for confirming a supporting force of a first pile, and FIG. 3 (b) is an explanatory diagram of a method for confirming a supporting force of a second and subsequent piles.
１…杭 ２…杭打ち機 ３…スケール ４…レベル 1 ... pile 2 ... pile driver 3 ... scale 4 ... level
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平田 茂良 大阪府大阪市北区梅田３丁目３番５号 大 和ハウス工業株式会社内 (72)発明者 堀園 義昭 大阪府大阪市北区梅田３丁目３番５号 大 和ハウス工業株式会社内 (72)発明者 礒田 喜久雄 東京都江戸川区西葛西２丁目17番19号 ポ ーター製造株式会社内 Ｆターム(参考） 2D043 AA03 AB03 AC05 BA10 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigera Hirata 3-5-5 Umeda, Kita-ku, Osaka-shi, Osaka Daiwa House Industry Co., Ltd. (72) Inventor Yoshiaki Horizono 3 Umeda, Kita-ku, Osaka-shi, Osaka No. 3-5 Daiwa House Industry Co., Ltd. (72) Inventor Kikuo Isoda 2-17-17 Nishikasai, Edogawa-ku, Tokyo F-term in Port Manufacturing Co., Ltd. 2D043 AA03 AB03 AC05 BA10
Claims (3)
ち機で杭頭に所定の時間載荷荷重を付与し、この載荷荷
重による杭の沈下量を測定することを特徴とする杭の支
持力確認方法。Claims: 1. A pile driving method, wherein after a pile is driven by a pile driving machine, a load is applied to a pile head for a predetermined time by the pile driving machine, and a settlement amount of the pile due to the loading is measured. How to check bearing capacity.
について、杭頭に載荷荷重を付与した後、時間ｔを経過
した時点でのその杭の沈下量ａ1を測定すると共に、時
間Ｔ（Ｔ＞ｔ）を経過した時点でのその杭の沈下量Ａ1
を測定し、しかる後、 残りの杭の一部又は全部について、杭頭に載荷荷重を上
記の所定の時間ｔだけ付与し、この載荷荷重による杭の
沈下量ａ2を測定し、この測定沈下量ａ2をもとに、ａ1
とＡ1との関係から、載荷荷重を時間Ｔ付与したときの
沈下量Ａ2を推定する請求項１に記載の杭の支持力確認
方法。Wherein among the plurality of piles, for at least one pile, after applying the applied load on the pile head, with measuring the subsidence a 1 of the pile at the time after the elapse of time t, the time Settlement amount A 1 of the pile when T (T> t) has elapsed
Was measured, and thereafter, for some or all of the remaining pile, the applied load was applied for a predetermined time t above the pile head, measuring the subsidence a 2 piles according to the applied load, the measured subsidence Based on the quantity a 2 , a 1
2. The method according to claim 1, wherein the amount of settlement A 2 when the load is applied for the time T is estimated from the relationship between A 1 and A 1 .
について、杭頭に載荷荷重を付与した後、時間ｔを経過
した時点でのその杭の沈下量ａ1を測定すると共に、時
間Ｔ（Ｔ＞ｔ）を経過した時点でのその杭の沈下量Ａ1
を測定し、しかる後、 残りの杭の一部又は全部について、杭頭に載荷荷重を上
記の所定の時間ｔだけ付与し、この載荷荷重による杭の
沈下量ａ2を測定し、この測定沈下量ａ2にＡ1／ａ1を乗
じて、載荷荷重を時間Ｔ付与したときの沈下量Ａ2を推
定する請求項１に記載の杭の支持力確認方法。3. Of the plurality of piles, for at least one pile, after applying the applied load on the pile head, with measuring the subsidence a 1 of the pile at the time after the elapse of time t, the time Settlement amount A 1 of the pile when T (T> t) has elapsed
Was measured, and thereafter, for some or all of the remaining pile, the applied load was applied for a predetermined time t above the pile head, measuring the subsidence a 2 piles according to the applied load, the measured subsidence It is multiplied by a 1 / a 1 to the amount a 2, the supporting force confirmation method of piles according to claim 1 to estimate the subsidence A2 when the applied load was time T applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000256522A JP2002069992A (en) | 2000-08-25 | 2000-08-25 | Confirming method of pile supporting force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000256522A JP2002069992A (en) | 2000-08-25 | 2000-08-25 | Confirming method of pile supporting force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002069992A true JP2002069992A (en) | 2002-03-08 |
Family
ID=18745119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000256522A Pending JP2002069992A (en) | 2000-08-25 | 2000-08-25 | Confirming method of pile supporting force |
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| Country | Link |
|---|---|
| JP (1) | JP2002069992A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205140A (en) * | 2006-02-06 | 2007-08-16 | Sekisui House Ltd | Control method of designed bearing capacity of pile |
| CN111274633A (en) * | 2020-01-17 | 2020-06-12 | 中交水运规划设计院有限公司 | Pile foundation length calculation method and device and electronic equipment |
-
2000
- 2000-08-25 JP JP2000256522A patent/JP2002069992A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205140A (en) * | 2006-02-06 | 2007-08-16 | Sekisui House Ltd | Control method of designed bearing capacity of pile |
| CN111274633A (en) * | 2020-01-17 | 2020-06-12 | 中交水运规划设计院有限公司 | Pile foundation length calculation method and device and electronic equipment |
| CN111274633B (en) * | 2020-01-17 | 2023-03-14 | 中交水运规划设计院有限公司 | Pile foundation length calculation method and device and electronic equipment |
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