JPS5777717A - Constructing method for sand column - Google Patents

Constructing method for sand column

Info

Publication number
JPS5777717A
JPS5777717A JP15301680A JP15301680A JPS5777717A JP S5777717 A JPS5777717 A JP S5777717A JP 15301680 A JP15301680 A JP 15301680A JP 15301680 A JP15301680 A JP 15301680A JP S5777717 A JPS5777717 A JP S5777717A
Authority
JP
Japan
Prior art keywords
casing
sand
vibro hammer
compressed air
soft ground
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
Application number
JP15301680A
Other languages
Japanese (ja)
Other versions
JPS6329048B2 (en
Inventor
Makoto Komura
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.)
Toa Corp
Toray Engineering Co Ltd
Original Assignee
Toa Corp
Toyo Construction Co 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 Toa Corp, Toyo Construction Co Ltd filed Critical Toa Corp
Priority to JP15301680A priority Critical patent/JPS5777717A/en
Publication of JPS5777717A publication Critical patent/JPS5777717A/en
Publication of JPS6329048B2 publication Critical patent/JPS6329048B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve a soft ground, by a method wherein a tubular casing, which has a drain pipe at a lower part and a sand charging port and a vibro hammer at an upper part, is inserted into a soft position to firmly press the sand in the casing by means of the vibro hammer.
CONSTITUTION: With a cover 2 closed, a casing 1 is lowered to a soft ground E below a water level L, and is driven into the soft ground by a vibro hammer 6. A compressed air is fed in a direction of an arrow mark A through a com pressed air feed port 5 to drain water or sludge, entering into the casing, through a drain pipe 3. A sand charging port 4 is opened to charge sand into the casing 1, and with the vibro hammer 6 operated, the sand in the casing 1 is pressed closely to form a sand column S being filled uniformly. The cover 2 is opened, and the sand column S, positioned upright, is caused to reach the seat. A compressed air is then fed through the compressed air feed port 5 into the casing 1, and the casing 1 is lifted as pressure is applied from the upper part of the casing 1.
COPYRIGHT: (C)1982,JPO&Japio
JP15301680A 1980-10-31 1980-10-31 Constructing method for sand column Granted JPS5777717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15301680A JPS5777717A (en) 1980-10-31 1980-10-31 Constructing method for sand column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15301680A JPS5777717A (en) 1980-10-31 1980-10-31 Constructing method for sand column

Publications (2)

Publication Number Publication Date
JPS5777717A true JPS5777717A (en) 1982-05-15
JPS6329048B2 JPS6329048B2 (en) 1988-06-10

Family

ID=15553113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15301680A Granted JPS5777717A (en) 1980-10-31 1980-10-31 Constructing method for sand column

Country Status (1)

Country Link
JP (1) JPS5777717A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50114811A (en) * 1974-02-21 1975-09-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50114811A (en) * 1974-02-21 1975-09-09

Also Published As

Publication number Publication date
JPS6329048B2 (en) 1988-06-10

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