JPH01192910A - Multi-purpose survey of ground - Google Patents
Multi-purpose survey of groundInfo
- Publication number
- JPH01192910A JPH01192910A JP1770388A JP1770388A JPH01192910A JP H01192910 A JPH01192910 A JP H01192910A JP 1770388 A JP1770388 A JP 1770388A JP 1770388 A JP1770388 A JP 1770388A JP H01192910 A JPH01192910 A JP H01192910A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- tube
- tip
- survey
- depth
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000013461 design Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000011835 investigation Methods 0.000 claims description 29
- 238000005553 drilling Methods 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 10
- 238000009430 construction management Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 20
- 238000009863 impact test Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、基礎杭等の設計と施工管理を行なうために
、地盤の性状を調査記録し、基礎杭等の設計と施工方法
の検討、施工管理に便ならしめることのできる地盤の多
目的調査方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention investigates and records the properties of the ground in order to design and manage the construction of foundation piles, etc., and examines the design and construction method of foundation piles, etc. The present invention relates to a multipurpose ground investigation method that can be used conveniently for construction management.
通常、軟弱地盤において、土木、建築の構造物の支持方
法として、場所打杭法、既製杭工法等が用いられており
、これらの工法の施工はいずれも社会的要求により低公
害工法が採用されている。Normally, cast-in-place piles, ready-made piles, etc. are used as support methods for civil engineering and architectural structures on soft ground, and low-pollution construction methods have been adopted for all of these construction methods due to social demands. ing.
杭の支持力は従来試験杭（打撃試験・ｉ！２荷試験）に
よる方法、又はポーリングデーター等による杭支持力の
理論計算方法により設計がなされて来た。The bearing capacity of a pile has conventionally been designed by a method using test piles (impact test/i!2 load test) or a theoretical calculation method of pile bearing capacity using polling data or the like.
近年、種々の低公害工法が開発され実施されているが、
理論式による杭の支持力の設計法が大部分を占めている
。In recent years, various low-pollution construction methods have been developed and implemented.
Most of the design methods are based on theoretical formulas for pile bearing capacity.
試験杭（打撃試験・ｆ２荷試験）により杭の支持層・支
持力の確認がなされ実施設計が行われるのが最も確実と
されているが、最近は経済的理由、環境的理由その他に
よってその手段が採用されるのはまれである。The most reliable method is to confirm the support layer and bearing capacity of the pile through test piles (impact test/f2 load test) before making the detailed design, but recently, due to economic, environmental, and other reasons, this method has been changed. is rarely adopted.
例えば大規模工事等に於いて少数のポーリングデーター
のみにたより、杭の設計をするとか、わずかの打撃又は
載荷試験を行ったとしても複雑な地盤条件等の場合など
では安全性に問題なしとは云い難い。For example, in large-scale construction projects, piles may be designed based only on a small amount of polling data, or even if a slight impact or loading test is performed, there may be no safety problems in complex ground conditions. Hard to say.
また一方、最近、既製杭低公害工法として、セメントミ
ルク法、プレポーリング工法、各種埋込杭工法が開発さ
れ実施されているが、理論上の設計はともかくとしても
施工面において抗−本毎の支持層の貫入、定着、（Ｉｔ
認の方法などに不充分な工法が多く見受けられる。On the other hand, recently, as low-pollution construction methods for ready-made piles, the cement milk method, pre-poling method, and various embedded pile construction methods have been developed and implemented. Penetration of support layer, fixation, (It
Many construction methods are found to be inadequate in terms of approval methods, etc.
Ｃ発明が解決しようとする課題〕
ところで、杭を地中に貫入する工法において、圧力水の
噴出と杭の回転により、無騒音、無振動で杭を貫入する
と共に、貫入時の各種条件、例えば置火速度、貫入深度
、回転負荷、経時的な回転数及び杭先での圧力流体噴出
圧をそれぞれ計測記録する工法を、本出願人らは特公昭
５４−３１６０３号によって提案した。Problem to be solved by invention C] By the way, in the construction method of penetrating a pile into the ground, the pile is penetrated without noise and vibration by the jetting of pressurized water and the rotation of the pile, and various conditions at the time of penetration, e.g. The present applicants proposed a construction method in Japanese Patent Publication No. 31603/1983 that measures and records the firing speed, penetration depth, rotational load, rotational speed over time, and pressure fluid ejection pressure at the tip of the pile.
上記の工法は、自動計測記録装置により、各抗ごとの支
持層への貫入定着が確認でき、しかも全ての杭の資料を
まとめることにより、綜合累積した支持力を算出又は推
定することができるという利点を有するが、近年の社会
的な状況により、基礎杭等の設計施工のより一層の簡略
化と確実性及び経済性が要求されてきている。With the above construction method, it is possible to confirm the penetration of each pile into the supporting layer using an automatic measuring and recording device, and by compiling data from all piles, it is possible to calculate or estimate the total cumulative bearing capacity. Although it has advantages, due to recent social conditions, there has been a demand for further simplification, reliability, and economy in the design and construction of foundation piles, etc.
そこで、この発明は、土質検査の時点、杭の設計時点、
又は杭の施工の前段階において筒便、迅速にまた経済的
に地盤性状、支持層、支持力等を把握、確認し、杭の設
計及び施工についてＧ［天性、安全性、経済性を供与す
ることができる地盤の多目的調査方法を提イハすること
を目的としている。Therefore, the present invention has been developed at the time of soil inspection, at the time of pile design,
Or, in the preliminary stage of pile construction, we can quickly and economically grasp and confirm the ground properties, supporting layer, bearing capacity, etc. The purpose of this study is to propose a multi-purpose ground investigation method that can be used to investigate the ground.
上記の目的を達成するために、この発明の地盤の多目的
調査方法は、調査管の先端部にセンサー装置とその先端
に油圧ジヤツキ及びこのジヤツキ先端に削孔ヘッドを各
々着脱自在に順次取付け、この調査管を地盤に回転貫入
させながらセンサー装置とこれに接続した自動計測記録
装置で連続的に地盤の性状を調査しながら記録し、更に
所定深度において、調査管頭部への加力、油圧ジヤツキ
による先端加力、センサー装置の作動等により、基礎杭
等の設計と施工管理に必要な支持地盤の深度、層厚、支
持力を、また要深度における水平耐力、摩擦力、水圧等
を調査検出する構成としたものである。In order to achieve the above object, the multi-purpose ground investigation method of the present invention includes sequentially attaching a sensor device to the tip of an investigation tube, a hydraulic jack to the tip, and a drilling head to the tip of the jack in a removable manner. As the investigation tube rotates through the ground, the properties of the ground are continuously investigated and recorded using a sensor device and an automatic measurement and recording device connected to it.Furthermore, at a predetermined depth, force is applied to the investigation tube head, and a hydraulic jack is applied. By applying force at the tip and operating the sensor device, we can investigate and detect the depth, layer thickness, and bearing capacity of the supporting ground necessary for the design and construction management of foundation piles, as well as the horizontal bearing capacity, frictional force, water pressure, etc. at the required depth. It is configured to do this.
調査管の先端部にセンサー装置と油圧ジヤツキ及び削孔
ヘッドを順次着脱自在に取付け、この調査管を、削孔ヘ
ッドから噴射するウォータジェット又はエアブロ−を補
助手段としてオーガ掘進機で地盤に回転貫入させる。A sensor device, a hydraulic jack, and a drilling head are removably attached to the tip of the investigation tube, and the investigation tube is rotated into the ground using an auger excavator using a water jet or air blow from the drilling head as an auxiliary means. let
この回転貫入時において、センサー装置とこの装置に接
続した自動計測記録装置とで、土質性状、支持層の調査
を行ない、貫入途中の必要深度において同様の調査を行
なう。During this rotational penetration, soil properties and supporting layers are investigated using a sensor device and an automatic measuring and recording device connected to this device, and a similar investigation is conducted at the required depth during penetration.
削孔ヘッドの先端が支持層に到着したことを自動計測記
録装置で判定した後、支持力の試験を行なう。After the automatic measuring and recording device determines that the tip of the drilling head has reached the support layer, a test of supporting force is performed.
支持力の試験は、調査管の上端頭部を専用ハンマーで打
撃し、この打撃試験による支持力の判定、調査管の頭部
にジヤツキを作動させる載荷試験、調査管の頭部を固定
し、先端に近い位置にある油圧ジヤツキを作動させる先
端部載荷試験等を選択し、必要によってはこれらを併用
し、上記の各試験によって得られた結果とポーリングデ
ータとの比較対比をしつつ、地盤性状をより実質的に把
握し、基礎杭の設計の工法の検討、施工管理及び管理の
ための資料を提供するものである。The bearing capacity test involves hitting the top end of the survey tube with a special hammer, determining the bearing capacity through this hitting test, loading test by operating a jack on the head of the survey tube, fixing the head of the survey tube, Select a tip loading test that operates a hydraulic jack located near the tip, use these in combination if necessary, and compare and contrast the results obtained from each of the above tests with polling data to determine the soil properties. The objective is to provide materials for understanding foundation pile design, construction methods, and construction management.
以下、この発明の実施例を添付図面に基づいて説明する
。Embodiments of the present invention will be described below with reference to the accompanying drawings.
図示のように、調査管１の先端に、センサー装置２と、
その先端に油圧ジヤツキ３及びこのジヤツキ３の先端に
削孔ヘッド４が順次着脱自在となるよう取付けられ、上
記調査管１とセンサー装置２及び油圧ジヤツキ３には軸
心に沿って中空通路１ａ、２ａ、３ａが設けられ、調査
管１の最上部より削孔ヘッド４に向けて圧力水や圧力空
気を供給できるようになっている。As shown in the figure, a sensor device 2 is attached to the tip of the investigation tube 1,
A hydraulic jack 3 is attached to the tip of the jack 3, and a drilling head 4 is detachably attached to the tip of the jack 3 in order. 2a and 3a are provided so that pressurized water and pressurized air can be supplied from the top of the investigation tube 1 toward the drilling head 4.
従って、調査管１とセンサー装置２と油圧ジャンキ３及
び削孔ヘッド４のそれぞれのジヨイント面には止水のた
めの防水リング５が組込まれている。Therefore, a waterproof ring 5 for water-stopping is incorporated into each joint surface of the survey tube 1, sensor device 2, hydraulic jack 3, and drilling head 4.
前記調査管１は、第２図に示すように、調査に必要な深
度に対応する長さが得られるよう、継手６と防水リング
を介して順次継ぎ足すことができると共に、センサー装
置２には、土圧計、水圧計、密度計等の各種センサー７
が組込まれており、各種センサー７は地上に配置した自
動計測記録装置（図示省略）にセンサー用コード８を介
して所定の情報を伝送するようになっている。As shown in FIG. 2, the survey pipes 1 can be successively added to each other via joints 6 and waterproof rings to obtain a length corresponding to the depth required for survey. , various sensors such as soil pressure gauge, water pressure gauge, density meter etc.7
is incorporated, and the various sensors 7 transmit predetermined information to an automatic measurement and recording device (not shown) placed on the ground via a sensor cord 8.
前記油圧ジヤツキ３はセンサー装置２と削孔ヘッド４の
間に位置し、油圧管９を介して油圧を供給することによ
り伸長し、削孔ヘッド４を下方に押し出すようになって
いる。The hydraulic jack 3 is located between the sensor device 2 and the drilling head 4, and expands by supplying hydraulic pressure through a hydraulic pipe 9, thereby pushing the drilling head 4 downward.
この油圧ジヤツキ３は調査管１の最頂部に連結し、頭部
からの加圧押下げ作用による載荷試験にも使用できる。This hydraulic jack 3 is connected to the top of the investigation tube 1, and can also be used for a loading test by applying pressure from the head.
前記削孔ヘッド４は、逆円錐形に形成され、上端面が油
圧ジヤツキ３の中空通路３ａと連通し、この上端面から
逆円錐外周面に開口するノズル孔１０が設けられ、更に
外周面に所要数のカッター１１が固定されている。The drilling head 4 is formed into an inverted conical shape, and has an upper end surface that communicates with the hollow passage 3a of the hydraulic jack 3, and is provided with a nozzle hole 10 that opens from the upper end surface to the outer circumferential surface of the inverted cone. A required number of cutters 11 are fixed.
前記調査管１の中空通路Ｉａ内からセンサー装置２及び
油圧ジヤツキ３内に挿入した沈下測定ロッド１２は、調
査管１の最頂部から削孔ヘッド４の上端中心部まで、必
要長さに順次継ぎ足され、この沈下測定ロッド１２は油
圧ジヤツキを使用して載荷試験を行なう場合において、
削孔ヘッド４の沈下量、即ち下方へ押し下げられた量を
、地上における最頂部の不動機１５で計測するものであ
る。The subsidence measuring rod 12 inserted into the sensor device 2 and the hydraulic jack 3 from the hollow passage Ia of the survey pipe 1 is successively extended to the required length from the top of the survey pipe 1 to the center of the upper end of the drilling head 4. When carrying out a loading test using a hydraulic jack, this subsidence measuring rod 12 is
The sinking amount of the drilling head 4, that is, the amount by which it is pushed down, is measured by the immobilizer 15 located at the top of the ground.
次に、地盤の調査の具体的な方法を第２図に基づいて説
明する。Next, a specific method of ground investigation will be explained based on Fig. 2.
先端にセンサー装置２と油圧ジヤツキ３及び削孔ヘッド
４を順次取付けた調査管１の最上端部にヘッドカバー１
３をセットし、このヘッドカバー１３の上に一定の回転
力、回転速度、重量を備えたオーガ掘進機１４を載置す
る。A head cover 1 is attached to the top end of the investigation tube 1, which has a sensor device 2, a hydraulic jack 3, and a drilling head 4 installed in sequence at the tip.
3, and an auger excavator 14 having a certain rotational force, rotational speed, and weight is placed on the head cover 13.
上記オーガ掘進機１４により、ヘッドカバー１３を介し
て調査管１を地盤に対して回転押込みを計画した所定深
度まで行なう、このとき、回転押込みの補助的手段とし
て、削孔ヘッド４のノズル孔１０から圧力水又は圧力空
気を噴出する。The auger drilling machine 14 rotates and pushes the survey tube 1 into the ground through the head cover 13 to a planned predetermined depth. At this time, as an auxiliary means for rotating and pushing, Spouts pressurized water or air.
上記の調査管１を回転貫入する途中や貫入後において、
地上に配置した自動計測記録装置で、調査管１の回転速
度、沈下（押込み）速度、回転抵抗、圧力水又は圧力空
気の噴出抵抗等を観測、測定して直接記録する。During and after rotating and penetrating the above-mentioned investigation tube 1,
An automatic measuring and recording device placed on the ground observes, measures, and directly records the rotational speed, sinking (pushing) speed, rotational resistance, jetting resistance of pressurized water or pressurized air, etc. of the investigation tube 1.
その観測、測定された数値をパラメータとして地盤状況
の調査を行なって地盤支持層の把握を行ない、杭の設計
に必要なデータを提供する。また、希望する所定深度に
おいて、センサー装置２を作動せしめ、センサー装置２
のもつ情報機能範囲内のデータも提供することができる
。Using the observed and measured values as parameters, we investigate the ground condition to understand the ground support layer and provide the data necessary for pile design. Further, the sensor device 2 is activated at a desired predetermined depth, and the sensor device 2 is activated.
It is also possible to provide data within the scope of its information capabilities.
削孔ヘッド４が支持層に到達した後、支持力の試験を行
なう場合には、次に示すような方法を単用もしくは併用
する。When testing the bearing capacity after the drilling head 4 reaches the support layer, the following methods may be used alone or in combination.
（＋）ｉｌｌ査管１の上端を専用のハンマーで打撃し、
打撃エネルギー、沈下量等によって支持力を判定する打
撃試験を行なう、また、センサー装置２によって先端部
分での加力量も計測できる。(+) Hit the upper end of ill probe tube 1 with a special hammer,
A impact test is conducted to determine the supporting force based on impact energy, sinkage amount, etc., and the sensor device 2 can also measure the amount of applied force at the tip.
（Ｉｔ）調査管１の頭部に油圧ジヤツキ３をセットし、
地上に固定した不動機１５の間でジヤツキを伸長作動さ
せ、調査管１に上端から圧力を加え、沈下測定ロッド１
２による測定によって載荷試験を行なう。(It) Set the hydraulic jack 3 on the head of the investigation tube 1,
A jack is extended between the immobilizers 15 fixed on the ground, pressure is applied to the survey tube 1 from the upper end, and the settlement measuring rod 1 is
A loading test is carried out by measurement according to 2.
（Ｉｌｌ） ！ＩＩ査管１の上端を不動機１５に固定し
、調査管１の先端に取付けである油圧ジヤツキ３を伸長
作動させ、削孔ヘッド４を押下げる反力をセンサー装Ｗ
２で測定すること又は油圧計測をすることにより先端部
載荷試験を行なう。(Ill)! The upper end of the II investigation tube 1 is fixed to the immobilizer 15, and the hydraulic jack 3 attached to the tip of the investigation tube 1 is extended and operated, and the reaction force pushing down the drilling head 4 is applied to the sensor device W.
2. Perform the tip loading test by measuring or measuring the oil pressure.
（ＩＶ）当調査システムは、山岳地、傾斜地、地上りの
おそれのある様な地盤において、通常の調査ポーリング
の補完的な調査機能を有すると共に、変位計、傾斜計、
水圧計等を取付けたセンサー装置２を必要数を必要深度
にセントしておき、地盤の安定度、水圧の変化など、安
全確保、危険予知などを目的として中長期的に地盤の変
化を継続して計測することができる。(IV) This survey system has a complementary survey function to regular survey polling in mountainous areas, sloped areas, and ground where there is a risk of landing on the ground.
The required number of sensor devices 2 equipped with water pressure gauges, etc. are installed at the required depth to continuously monitor changes in the ground over the medium to long term for the purpose of ensuring safety and predicting danger, such as changes in ground stability and water pressure. It can be measured by
ちなみに、第３図のフローチャートは、調査管１の回転
押込みから引抜回収までに行なう作業工程と試験の［１
及び順序を例示している。Incidentally, the flowchart in Figure 3 shows the work process from rotating the investigation tube 1 to pulling it out and collecting it and the test [1].
and the order.
以上のように、この発明によると、先端部にセンサー装
置と油圧ジヤツキ及び削孔ヘッドを順次取付けた調査管
を地盤に回転貫入し、貫入途中及び支持層への到達後に
おいて、地盤性状の測定や各種試験を行なうようにした
ので、ｉｌ！！盤に対する調査管の回転貫入の過程をリ
アルタイムで観測、測定、記録することが可能となり、
ポーリングデータとの比較対比をして、地盤性状をより
実質的に把握し、基礎杭の設計、工法の検討施工管理及
び監理のための資料を容易に提供することができるとい
う効果がある。As described above, according to the present invention, a survey tube with a sensor device, a hydraulic jack, and a drilling head sequentially attached to the tip is rotated and penetrated into the ground, and the soil properties are measured during the penetration and after reaching the supporting layer. and various tests, so il! ! It is now possible to observe, measure, and record the process of rotational penetration of the investigation tube into the panel in real time.
By comparing and contrasting with polling data, it is possible to more effectively understand the ground properties and easily provide materials for foundation pile design, construction method study, construction management, and supervision.
まとめとして、一定の重量と、回転力を持ったオーガー
掘進機を利用して計測体を、地中に理込みつつ、地盤の
特性を自動計測記録装置でリアルタイムで観測し、必要
に応じて、各種の試験を行える。地盤の多目的調査方法
をシステム化し簡便、迅速にまた経済的に地盤の情報を
提案する調査方法を提案する事にある。In summary, we use an auger excavator with a certain weight and rotational power to drive the measurement object into the ground, while observing the characteristics of the ground in real time with an automatic measurement and recording device, and as needed. Can perform various tests. The purpose of this project is to systematize a multi-purpose ground investigation method and propose an investigation method that provides ground information simply, quickly, and economically.
さらに付言するならば地盤の地上り等、安全対策の為、
又は危険予知の為に地中に中、長期的に計測体を埋没し
ておき、必要な情報を検出する事にも利用する事も考慮
した発明である。Furthermore, for safety measures such as ground level, etc.
Alternatively, this invention takes into consideration the possibility of burying a measurement object underground for a long period of time for the purpose of predicting danger and using it to detect necessary information.
【図面の簡単な説明】
第１図はこの発明の調査方法の実施に用いる調査管の先
端部構造を示す縦断面図、第２図は調査管の回転貫入状
態を示す説明図、第３図は調査管の貫入工程と試験の種
類及び順序を示すフローチャートである。
１・・・・・・調査管、 ２・・・・・・センサ
ー装置、３・・・・・・油圧ジヤツキ、 ４・・・・・
・削孔へ・ノド、７・・・・・・センサー、 １
０・・・・・・ノズル孔、１２・・・・・・沈下測定ロ
ッド、
１３・・・・・・ヘッドカバー、１４・・・・・・オー
ガ掘進機、１５・・・・・・不動標。[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a longitudinal cross-sectional view showing the structure of the tip end of the investigation tube used to carry out the investigation method of the present invention, Fig. 2 is an explanatory view showing the rotational penetration state of the investigation tube, and Fig. 3 is a flowchart showing the process of penetrating the probe tube and the types and order of tests. 1... Investigation tube, 2... Sensor device, 3... Hydraulic jack, 4...
・To drilling・Groove, 7...Sensor, 1
0...Nozzle hole, 12...Settlement measurement rod, 13...Head cover, 14...Auger excavator, 15...Imovable mark .
Claims (1)
キ及びこのジャッキ先端に削孔ヘッドを各々着脱自在に
順次取付け、この調査管を地盤に回転貫入させながらセ
ンサー装置とこれに接続した自動計測記録装置で連続的
に地盤の性状を調査しながら記録し、更に所定深度にお
いて、調査管頭部への加力、油圧ジャッキによる先端加
力、センサー装置の作動等により、基礎杭等の設計と施
工管理に必要な支持地盤の深度、層厚、支持力を、また
必要深度における水平耐力、摩擦力、水圧等を調査検出
することを特徴とする地盤の多目的調査方法。A sensor device is attached to the tip of the survey tube, a hydraulic jack is attached to the tip of the survey tube, and a drilling head is attached to the tip of this jack in order to be detachable.While the survey tube is rotated and penetrated into the ground, the sensor device is connected to the automatic measurement recorder. The equipment continuously investigates and records the properties of the ground, and at a predetermined depth, the design and construction of foundation piles, etc. are carried out by applying force to the head of the investigation tube, applying force to the tip with a hydraulic jack, and activating a sensor device. A multipurpose soil investigation method characterized by investigating and detecting the depth, layer thickness, and bearing capacity of the supporting ground necessary for management, as well as the horizontal bearing capacity, frictional force, water pressure, etc. at the required depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1770388A JPH0629497B2 (en) | 1988-01-27 | 1988-01-27 | Multi-purpose survey method for ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1770388A JPH0629497B2 (en) | 1988-01-27 | 1988-01-27 | Multi-purpose survey method for ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01192910A true JPH01192910A (en) | 1989-08-03 |
| JPH0629497B2 JPH0629497B2 (en) | 1994-04-20 |
Family
ID=11951141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1770388A Expired - Lifetime JPH0629497B2 (en) | 1988-01-27 | 1988-01-27 | Multi-purpose survey method for ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629497B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193062A (en) * | 1992-12-21 | 1994-07-12 | Giken Seisakusho Co Ltd | Press-in pile driving and drawing machine |
| JPH06193064A (en) * | 1992-12-24 | 1994-07-12 | Giken Seisakusho Co Ltd | Press-in force control device for concrete pile |
| JP2007263957A (en) * | 2006-03-01 | 2007-10-11 | Nippon Steel Engineering Co Ltd | Groundwater flow condition estimating device and method, soil effective thermal conductivity estimating method, and ground survey method |
| JP2018084071A (en) * | 2016-11-22 | 2018-05-31 | ジャパンパイル株式会社 | Pile foundation design system, design method and design program |
| JP2018141280A (en) * | 2017-02-27 | 2018-09-13 | 日本基礎技術株式会社 | Ground determination method and drilling device |
-
1988
- 1988-01-27 JP JP1770388A patent/JPH0629497B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193062A (en) * | 1992-12-21 | 1994-07-12 | Giken Seisakusho Co Ltd | Press-in pile driving and drawing machine |
| JPH06193064A (en) * | 1992-12-24 | 1994-07-12 | Giken Seisakusho Co Ltd | Press-in force control device for concrete pile |
| JP2007263957A (en) * | 2006-03-01 | 2007-10-11 | Nippon Steel Engineering Co Ltd | Groundwater flow condition estimating device and method, soil effective thermal conductivity estimating method, and ground survey method |
| JP2018084071A (en) * | 2016-11-22 | 2018-05-31 | ジャパンパイル株式会社 | Pile foundation design system, design method and design program |
| JP2018141280A (en) * | 2017-02-27 | 2018-09-13 | 日本基礎技術株式会社 | Ground determination method and drilling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0629497B2 (en) | 1994-04-20 |
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