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Soil tamp device and measurement method

A measurement method and soil technology, applied in the field of civil engineering, to achieve the effect of simple method and strong operability

Inactive Publication Date: 2009-02-11
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is only a compaction instrument for studying the maximum dry density of soil in China, and there is no experimental device for studying the on-site compaction characteristics of soil.

Method used

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  • Soil tamp device and measurement method
  • Soil tamp device and measurement method
  • Soil tamp device and measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] Embodiment: (1) side plate 1, back plate 2, plexiglass plate 3 are closed together, and mutual embedding sealing becomes box body, and whole box body is embedded in the base plate embedding groove 9, and connects with hinge 3; (2) Put the permeable stone on the bottom plate, spread the soil with a certain water content and quality in advance into the compaction box, bury micro-earth pressure gauges, pore water pressure gauges, water content probes, suction probes, etc. at different positions, and apply A certain pressure reaches the required initial compaction degree, and the compaction degree is controlled by the scale reading of the plexiglass plate film; (3) Place the compaction frame on the compaction box, fix the compaction box with the fixed pin 12, and the cubic weight passes through the pulley 11 Suspension, the height can be controlled by a fixed ruler on the compaction frame, half-form or full-form compaction is performed by dropping a heavy hammer on one side ...

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Abstract

The invention provides a soil compaction device and a measuring method. The device comprises a compaction case, a compaction rack and a heavy hammer. The compaction case is a cuboid case enclosed by two side plates, a rear plate and an organic glass plate. The base plate is an iron plate provided with a water discharge groove which is inclined and has a corner point provided with a drain hole for the water discharge of the iron groove. The cuboid case is fixed on the base plate via a caulking groove. Sealing rings are disposed on the base plate and the circumference. The side plates, the rear plate and the base plate are connected together via hinges. The organic glass plate and the base plate are hermetically riveted. A film provided with coordinate grids adheres to the surface of the organic glass plate. The compaction rack is disposed on the upper surface of a compaction drum. The position of the compaction case is fixed via fixing pins. A pulley is disposed on the compaction rack for suspending the heavy hammer, and a ruler is disposed near the heavy hammer for measuring the height of the heavy hammer which is a rectangular parallelepiped-shaped metal block and used for hammering soil.

Description

technical field [0001] The invention relates to a geotechnical experiment instrument, which belongs to the technical field of civil engineering. Background technique [0002] my country has used compacted soil to treat highway subgrades for decades. As we all know, this method can improve the bearing capacity and compressive modulus of the subgrade, and this method has the advantages of convenient construction and significant economic benefits, and has been more and more widely used. However, this method does not have a mature theory and design system, and relies more on empirical design. The field construction conditions are complex, so it is very important to develop an indoor soil compaction device to reproduce the field construction conditions for the study of the physical and mechanical mechanism and pore water pressure change characteristics of the compacted soil. At present, there is only a compaction instrument for studying the maximum dry density of soil in China,...

Claims

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Application Information

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IPC IPC(8): G01N33/24E02D1/00
Inventor (请求不公开姓名)
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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