JPS5777714A - Tester for ground strength - Google Patents

Tester for ground strength

Info

Publication number
JPS5777714A
JPS5777714A JP15203280A JP15203280A JPS5777714A JP S5777714 A JPS5777714 A JP S5777714A JP 15203280 A JP15203280 A JP 15203280A JP 15203280 A JP15203280 A JP 15203280A JP S5777714 A JPS5777714 A JP S5777714A
Authority
JP
Japan
Prior art keywords
tube
ground
inner tube
double tube
double
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
Application number
JP15203280A
Other languages
Japanese (ja)
Inventor
Yasuhiro Iwasaki
Osamu Kusaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP15203280A priority Critical patent/JPS5777714A/en
Publication of JPS5777714A publication Critical patent/JPS5777714A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

PURPOSE: To enable to perform a detection, accompanied with no rotational friction, irrespective of the strength of a ground, by a method wherein, after an excavation operation is performed to a desired depth through the rotation of a screw having a double tube at the outer periphery thereof, only the inner tube of the double tube is pressed into a ground to detect a press-in force by means of an oil pressure.
CONSTITUTION: An outer tube 1 of a double tube surrounds an inner tube 2, and a conical cone 3 is placed at the end of the inner tube 2. A spiral screw 7 is located at the outer periphery of the outer tube 1, and a rotation means 9 rotates the double tube as a hydraulic means 8 presses in the double tube. When the double tube reaches a desired detecting position, the hydraulic means 8 pushes solely the inner tube 2 into a ground 6. The press-in force of the cone 3 at the lower end of the inner tube 2 is detected by means of an oil pressure of a hydraulic unit 13 to decide the strength of a ground.
COPYRIGHT: (C)1982,JPO&Japio
JP15203280A 1980-10-31 1980-10-31 Tester for ground strength Pending JPS5777714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15203280A JPS5777714A (en) 1980-10-31 1980-10-31 Tester for ground strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15203280A JPS5777714A (en) 1980-10-31 1980-10-31 Tester for ground strength

Publications (1)

Publication Number Publication Date
JPS5777714A true JPS5777714A (en) 1982-05-15

Family

ID=15531560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15203280A Pending JPS5777714A (en) 1980-10-31 1980-10-31 Tester for ground strength

Country Status (1)

Country Link
JP (1) JPS5777714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04323536A (en) * 1991-04-22 1992-11-12 Yubiron Fuakuto:Kk Intrusion testing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04323536A (en) * 1991-04-22 1992-11-12 Yubiron Fuakuto:Kk Intrusion testing device

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