GB681626A - Improvements in or relating to soil-testing apparatus - Google Patents

Improvements in or relating to soil-testing apparatus

Info

Publication number
GB681626A
GB681626A GB11500/50A GB1150050A GB681626A GB 681626 A GB681626 A GB 681626A GB 11500/50 A GB11500/50 A GB 11500/50A GB 1150050 A GB1150050 A GB 1150050A GB 681626 A GB681626 A GB 681626A
Authority
GB
United Kingdom
Prior art keywords
sheath
rod
piston
tip
pressure
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
Application number
GB11500/50A
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.)
Frankignoul Pieux Armes
Compagnie Internationale des Pieux Armes Frankignoui SA
Original Assignee
Frankignoul Pieux Armes
Compagnie Internationale des Pieux Armes Frankignoui SA
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 Frankignoul Pieux Armes, Compagnie Internationale des Pieux Armes Frankignoui SA filed Critical Frankignoul Pieux Armes
Publication of GB681626A publication Critical patent/GB681626A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00Investigation of foundation soil in situ
    • E02D1/02Investigation of foundation soil in situ before construction work
    • E02D1/022Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

681,626. Testing physical qualities of materials. COMPAGNIE INTERNATIONALE DES PIEUX ARMES FRANKIGNOUL SOC. ANON. May 9, 1950 [June 16, 1949], No. 11500/50. Class 106 (ii). Soil-testing apparatus having a pointed member which is driven into the soil by a rod guided in an outer sheath, a seal between the lower ends of the rod and the sheath, and means for measuring the resistance encountered in driving the point and the sheath, is characterized in that it comprises a piston adapted to transmit the driving force to the rod and mounted in a hydraulic cylinder adapted to transmit the driving force to the sheath, and means for measuring the pressure effective in the said cylinder and corresponding to the force applied to said piston, the cylinder itself being submitted to a hydraulic pressure which is in turn measured to give the total driving force. The driving force is applied by a screw 23, to the head 22 of the rod 20 of a piston 4 working in a cylinder formed in a body 1. The space below the piston is filled with oil and is connected to a pressure-gauge 6 which indicates the total pressure applied to the sheath and the tip. A second piston 5 also works in a cylinder formed in the body 1 and its rod 12 acts on the rod 13 carrying the tip 14. The space above this piston is connected to a pressure-gauge 7 which indicates the pressure applied to the tip alone. The pistons have packing seals 8, 9 retained by plates 10, 11. Secured to the body 1 is a conical guide 15 which abuts the sheath 16 surrounding the rod 13. The lower end of the sheath carries a ring 19 or is formed with a groove which holds a packing 18 against a sleeve 17 integral with the tip 14. The sleeve 17 tapers upwardly and the diameter of the main part of the sheath 16 is equal to the greatest diameter of the tip 14. The resistance of the sheath is thus due only to lateral friction against the soil. The whole apparatus is suitably supported, the piston-rod 20 having a portion of square section guided in a yoke 24, itself guided for vertical movement in the support. The rod 13 and sheath 16 are made in sections, additional sections being screwed on as the driving proceeds. To withdraw the rod and sheath, the body 1 is first raised slightly and then an annular member 27 is placed around the sheath, a ring 28 being screwed above it to the sheath, and a screw 29 being engaged in the end of the rod so as to overlap the ring 28. Links 30 pivoted in the member 22 have pins which are engaged on brackets 33 on the body 1 so that when the latter is raised, the sheath and rod are also raised. In a modification, each section of the rod 13 has an enlarged lower end which is engaged, when the sheath is raised, by a shoulder at the upper end of the next lower section of the sheath.
GB11500/50A 1949-06-16 1950-05-09 Improvements in or relating to soil-testing apparatus Expired GB681626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR681626X 1949-06-16

Publications (1)

Publication Number Publication Date
GB681626A true GB681626A (en) 1952-10-29

Family

ID=9022921

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11500/50A Expired GB681626A (en) 1949-06-16 1950-05-09 Improvements in or relating to soil-testing apparatus

Country Status (1)

Country Link
GB (1) GB681626A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584186A1 (en) * 1985-06-28 1987-01-02 Hurtado Jean Device for measuring characteristics of soils by static/dynamic penetration
WO2019016448A1 (en) * 2017-07-18 2019-01-24 Equatech.R&D Static penetrometer and associated measurement method
FR3092598A1 (en) * 2019-02-13 2020-08-14 Equatech.R&D autonomous stato-dynamic penetrometer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584186A1 (en) * 1985-06-28 1987-01-02 Hurtado Jean Device for measuring characteristics of soils by static/dynamic penetration
WO2019016448A1 (en) * 2017-07-18 2019-01-24 Equatech.R&D Static penetrometer and associated measurement method
FR3069324A1 (en) * 2017-07-18 2019-01-25 Pierre Riegel STATIC PENETROMETER AND ASSOCIATED MEASUREMENT METHOD
FR3092598A1 (en) * 2019-02-13 2020-08-14 Equatech.R&D autonomous stato-dynamic penetrometer

Similar Documents

Publication Publication Date Title
US2499695A (en) Jar
GB1394202A (en) Device for maintaining a working fluid at a pressure sub stantially following a predetermined law of variation
GB681626A (en) Improvements in or relating to soil-testing apparatus
US2640351A (en) Device for measuring soil resistance
US1997864A (en) Hydraulic weight indicator
GB1359909A (en) Support means for mast mounted drill
US2786451A (en) Pneumatic rotary drill hammer
GB1537386A (en) Borehole closure devices
GB1097339A (en) Improvements in apparatus for testing fluid pressure seals
GB474499A (en) Improvements in packing heads for wells
NO824323L (en) EARTH TESTING DEVICE.
SU711229A1 (en) Unit for investigating physical and mechanical properties of soil
CN208763607U (en) A kind of pumping unit test indicator card tool of unloading
US2583841A (en) Apparatus for measuring rotary well strings and well depths
GB943061A (en) Improvements in testing devices for pressure gauges
US2028817A (en) Hydraulic jack
GB751596A (en) Improvements relating to supports for drilling and the like machines
GB659331A (en) Improvements in pressure fluid driven hammer pistons for hammer drills and other percussion tools
US2669213A (en) Pressure indicating device
SU1432363A1 (en) Arrangement for pressure test of pipes
US2930582A (en) Vertical load suspension and adjusting mechanism
SU72156A1 (en) Device for adjusting the feed rate of the bit to the bottom
SU449269A1 (en) Stand for the study of the process of cutting rocks
SU715764A1 (en) Borehole curving indicator
SU773475A1 (en) Pressiometer