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Compressibility determination device for rammed cement soil and determination method for compression modulus

A technology for measuring device and compressive modulus, which is applied in the direction of measuring device, strength characteristics, and test material strength by applying repeated force/pulsation force, etc., to achieve good promotion and application prospects, convenient calculation, and improved test efficiency

Inactive Publication Date: 2016-02-24
TAIYUAN UNIV OF TECH +1
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Problems solved by technology

[0003] In order to solve the problem of determining the compressive modulus of cement and soil, the present invention provides a device for measuring the compressibility of compacted cement and soil and a method for determining the compressive modulus

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  • Compressibility determination device for rammed cement soil and determination method for compression modulus
  • Compressibility determination device for rammed cement soil and determination method for compression modulus
  • Compressibility determination device for rammed cement soil and determination method for compression modulus

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Embodiment Construction

[0019] The device for measuring the compressibility of compacted cement and soil includes a flat cylindrical base 1, an annular fixer 2 composed of two semicircular rings supported on the upper end of the flat cylindrical base 1, and placed in the flat cylindrical base 1 with a compacted cement and soil The ring cutter 4 of 3, a plurality of fixed ribs 5 supported on the ring cutter 4 and radially evenly distributed, a ball 6 installed on the free end of the fixed rib 5 and capable of rolling in the up and down direction, placed in the middle of the upper end surface of the compacted cement soil 3 and The scale ball 7 matched with the circle formed on the innermost side of each ball 6 is concentric with each fixed rib 5 and fixed on the upper part of each fixed rib 5 with the opening facing upwards. The lower end is inserted into the inner ring of the annular tube 8 The two ends between the outer ring and the outer ring are opening-shaped compacting cylinders 9,

[0020] The u...

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Abstract

The invention relates to the field of compressibility determination of rammed cement soil, in particular to a compressibility determination device for rammed cement soil and a determination method for a compression modulus. The determination device comprises a flat-barrel-shaped base, an annular fixer which is supported at the upper end of the flat-barrel-shaped base and formed by two semi-circular rings, a ring knife which is arranged in the flat-barrel-shaped base and carries the rammed cement soil, a plurality of fixing ribs which are supported on the ring knife and distributed radially and roll balls which are installed at the free ends of the fixing ribs and can roll in the vertical direction. According to the compressibility determination device for the rammed cement soil and the determination method for the compression modulus, the compression modulus of the rammed cement soil can be quickly determined through the sinkage of scale balls, the mass ratio of the rammed cement soil and a calculation formula for calculating the compression modulus, determination of the compression modulus is quicker under high pressure, and the test efficiency is improved; in addition, calculation is convenient, data are reliable, and the good application and popularization prospect is achieved.

Description

technical field [0001] The invention relates to the field of measuring the compressibility of rammed cement soil, in particular to a device for measuring the compressibility of rammed cement soil and a method for determining the compressive modulus. Background technique [0002] The compressive modulus of soil is the ratio of the vertical stress change of soil to the corresponding vertical strain change under the condition of complete confinement. The compressive modulus of soil is an important factor for judging the compressibility of soil and calculating the compressive deformation of foundation. One of the indicators. The compression modulus Es of rammed cement soil is needed for the deformation calculation of rammed cement soil pile composite foundation. According to the "Technical Specifications for Building Foundation Treatment" JGJ79-2012, the sample of rammed cement soil is prepared by compaction test, and the compression of rammed cement soil The modulus is much la...

Claims

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Application Information

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IPC IPC(8): G01N3/34
CPCG01N2203/0085
Inventor 韩鹏举韩鹏严奕博许华善琪何斌马富丽刘剑平白晓红贺武斌董晓强曾国红
Owner TAIYUAN UNIV OF TECH
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