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Method for measuring layered settlement of soil body under dynamic compaction effect

A technology of soil stratification and measurement method, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc. Reliable, easy-to-operate, and time-consuming results

Inactive Publication Date: 2020-04-14
北京中企卓创科技发展有限公司
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Problems solved by technology

[0008] The invention proposes a method for measuring the layered settlement of soil under the action of dynamic compaction, which solves the problems of inconvenient on-site operation, poor accuracy of observation data, and disturbance of the original consolidated and compressed foundation soil in the measurement process in the prior art

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  • Method for measuring layered settlement of soil body under dynamic compaction effect
  • Method for measuring layered settlement of soil body under dynamic compaction effect

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Embodiment

[0030] A method for measuring the layered settlement of soil under the action of dynamic compaction, the specific steps are as follows:

[0031] (1) Make a circular iron sheet as a marker. The diameter of the circular iron sheet is slightly smaller than the inner diameter of the drilled hole, specifically 110 mm. The thickness of the circular iron sheet is not less than 10 mm, and the surface is smooth. The upper surface of the circular iron sheet soldered with hooks such as Figure 1-Figure 2 shown;

[0032] (2) Determine the embedding position of all markers, and drill holes at each embedding position. After drilling to the specified depth, put a certain amount of dry sand in the borehole and compact it (eliminate the iron sheet due to its own weight. soil compression), use a rope to tie the hook on the round iron piece made in step (1), and pull the rope to slowly put the round iron piece into one of the drilled holes to ensure that the round iron piece is placed horizonta...

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Abstract

The invention provides a method for measuring layered settlement of a soil body under a dynamic compaction effect. The method comprises the following steps of manufacturing circular iron sheets as markers, and welding a hook on the upper surface of each circular iron sheet; determining embedding positions, drilling a hole at each embedding position, putting a certain amount of dry sand into the drilled holes, compacting, tying the hooks on the circular iron sheet with a rope, putting the circular iron sheet into the drilled hole, and backfilling the drilled hole; and on the ground surface above the embedding positions of the markers, acquiring field data by adopting a ground penetrating radar to obtain an observation image, reading an initial embedding depth value of the circular iron sheet of each marker and a post-settlement depth value after dynamic compaction construction according to the observation image of the ground penetrating radar, and comparing the initial embedding depth value with the post-settlement depth value to obtain a dynamic compaction layered settlement value of a soil layer where each marker is positioned. The method has the beneficial effects that the settlement of soil layers with different depths after dynamic compaction construction is detected by utilizing high precision of the ground penetrating radar, the dynamic compaction construction site operation is facilitated, the observation data is reliable, and the dynamic compaction reinforced soil body is not damaged in the measuring process.

Description

technical field [0001] The invention relates to the technical field of rock and soil parameter measurement, in particular to a method for measuring layered settlement of soil under the action of dynamic compaction. Background technique [0002] The dynamic compaction method is a foundation treatment method that uses a heavy hammer to ram the soil from a certain height so that the foundation soil can be quickly consolidated and the bearing capacity of the weak foundation can be improved. The dynamic compaction method has the advantages of low cost, simple operation, and remarkable effect. The dynamic compaction construction method has been widely used in foundation reinforcement projects such as highways, railways, airports, nuclear power plants, large industrial areas, and port reclamation. [0003] Due to the diversity of rock and soil, the complexity of dynamic ramming reinforcement mechanism and the particularity of various engineering projects, in-depth research on the e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/00
CPCE02D1/00
Inventor 赵坤阳侯森任庚郑盼飞陈梦龙
Owner 北京中企卓创科技发展有限公司
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