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Method and device for evaluating compaction degree of roadbed

A technology of compactness and subgrade, which is applied in the field of evaluating subgrade compaction, and can solve the problems that the stiffness and strength of airport pavement cannot withstand strong loads for a long time, waste of manpower and material resources, and the inability to evaluate the global compactness of airport foundations, etc.

Inactive Publication Date: 2018-06-22
CHINA AIRPORT CONSTR GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, the degree of compaction is an important basis for judging the quality of airport foundation construction. If the foundation is undercompacted, the soft soil will make the stiffness and strength of the airport pavement unable to withstand strong loads for a long time. A lot of manpower and material resources were wasted on the field
[0004] Traditional compaction is generally evaluated manually, such as sand filling method, ring knife method, etc. Core drilling sampling of the pavement after construction not only destroys the foundation structure, but also cannot evaluate the global compactness of the airport foundation

Method used

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  • Method and device for evaluating compaction degree of roadbed
  • Method and device for evaluating compaction degree of roadbed
  • Method and device for evaluating compaction degree of roadbed

Examples

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Embodiment 1

[0069] Embodiment 1 of the present application provides a method for evaluating the degree of subgrade compaction, the degree of which is as follows figure 1 As shown, the specific steps are as follows:

[0070] S100. Determine the average acceleration value of the rolling wheel rolling the ground when rolling the set road section.

[0071] The rolling wheel here is a three-lobed wheel for compacting the roadbed, or it can be rolled with other numbers of petals.

[0072] In step S100, determining the average acceleration value of the rolling wheel rolling the ground when rolling the set road section includes the following steps, and the specific method flow chart is as follows: figure 2 Shown:

[0073] S200. Obtain a plurality of acceleration values ​​generated when the rolling wheel rolls the ground in the set road section.

[0074] S210. Extract an effective acceleration value from multiple acceleration values.

[0075] Due to the uneven distribution of subgrade soil an...

Embodiment 2

[0135] Embodiment 2 of the present application provides a device for evaluating the degree of subgrade compaction, such as Figure 9 As shown, it includes: a determination module 901 and an evaluation module 902 .

[0136] The determination module 901 is used to determine the average acceleration value of the rolling wheels rolling the ground when rolling the set road section.

[0137] An evaluation module 902, configured to evaluate the compaction degree of the set road section according to the average acceleration value and the rolling times of the set road section.

[0138] Preferably, the determination module is specifically used to determine the average acceleration value of the rolling wheel rolling the ground when rolling the set road section according to the following method:

[0139] (1) Obtain multiple acceleration values ​​generated when the rolling wheel is rolling the ground in the set road section.

[0140] (2) Extract an effective acceleration value from multi...

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Abstract

The invention provides a method and a device for evaluating a compaction degree of a roadbed. The method comprises the following steps: determining an average acceleration value acquired by rolling aground by rolling wheels at a rolling set road section; and evaluating the compactness degree of the set road section according to the average acceleration value and rolling times of the set road section. According to the embodiment of the invention, the compactness degree of the set road section can be evaluated completely, and a roadbed mechanism is not needed to be destroyed.

Description

technical field [0001] The present application relates to the technical field of foundation construction, in particular, to a method and device for evaluating the degree of compaction of a roadbed. Background technique [0002] The degree of subgrade compaction refers to the ratio of the dry density of soil or other road construction materials after compaction to the standard maximum dry density, expressed as a percentage, and is one of the key indicators for the quality inspection of subgrade and pavement construction, representing the density after on-site compaction The higher the degree of compaction and the greater the density, the better the overall performance of the material. [0003] For example, in airport construction, the quality of airport foundation construction determines whether the airport pavement can withstand the strong load brought by aircraft take-off and landing for a long time. Therefore, the degree of compaction is an important basis for judging the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/06
CPCG06Q10/0639G06F30/20
Inventor 唐科徐军库袁海文张欣怡王秋生
Owner CHINA AIRPORT CONSTR GRP
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