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Rapid detection method for highway roadbed compaction quality

A technology of compaction quality and detection method, applied in the field of foundation soil survey, foundation structure engineering, construction, etc., can solve problems such as unreasonable, far-fetched, increase in the level and action time of dynamic stress of highway subgrade, etc. The effect of labor intensity, high degree of automation, and fast test speed

Inactive Publication Date: 2018-08-14
甘肃省交通规划勘察设计院股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, the traditional physical and mechanical testing indicators belong to static testing, but with the continuous development of high-speed and heavy-duty traffic trends, the level and action time of dynamic stress inside the highway subgrade have increased significantly, and purely static evaluation indicators have become far-fetched and inexhaustible. Reasonable

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  • Rapid detection method for highway roadbed compaction quality
  • Rapid detection method for highway roadbed compaction quality
  • Rapid detection method for highway roadbed compaction quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Taking the loess filled subgrade as an example, the specific test steps are as follows:

[0032] (1) At the construction site of the loess filler subgrade, select a subgrade soil area to be inspected, randomly select a test point, and use a portable dynamic deformation modulus tester to test the dynamic deformation modulus E of the point vd value, and record the data.

[0033] ⑵In the specified range of the selected measuring point in step ⑴, select another measuring point, use the sand filling method to detect the degree of subgrade compaction, and record the data.

[0034] ⑶ Repeat steps ⑴~⑵, measure no less than 60 groups of corresponding data, eliminate abnormal data, select no less than 50 groups for numerical analysis, and establish the dynamic deformation modulus E of each soil quality according to the division of soil quality vd The relationship between the value and the degree of subgrade compaction K: K=0.35X+78.85 (see figure 1 ), imported into th...

Embodiment 2

[0041] Example 2 Taking the gravel soil filled roadbed as an example, the specific test steps are as follows:

[0042] (1) At the construction site of the gravel soil filler subgrade, select a subgrade soil area to be inspected, randomly select a test point, and use a portable dynamic deformation modulus tester to test the dynamic deformation modulus E of the point vd value, and record the data.

[0043] ⑵In the specified range of the selected measuring point in step ⑴, select another measuring point, use the sand filling method to detect the degree of subgrade compaction, and record the data.

[0044] ⑶ Repeat steps ⑴~⑵, measure no less than 60 groups of corresponding data, eliminate abnormal data, select no less than 50 groups for numerical analysis, and establish the dynamic deformation modulus E of each soil quality according to the division of soil qualityvd The relationship between the value and the degree of subgrade compaction K: K=11.4lnX+47.21 (see figure 2 ), impo...

Embodiment 3

[0051] Example 3 Taking red mudstone filling roadbed as an example, the specific test steps are as follows:

[0052] (1) At the construction site of red mudstone filler subgrade, select a subgrade soil area to be inspected, randomly select a test point, and use a portable dynamic deformation modulus tester to test the dynamic deformation modulus E of the point vd value, and record the data.

[0053] ⑵In the specified range of the selected measuring point in step ⑴, select another measuring point, use the sand filling method to detect the degree of subgrade compaction, and record the data.

[0054] ⑶ Repeat steps ⑴~⑵, measure no less than 60 groups of corresponding data, eliminate abnormal data, select no less than 50 groups for numerical analysis, and establish the dynamic deformation modulus E of each soil quality according to the division of soil quality vd The relationship between the value and the degree of subgrade compaction K: K=8.7lnX+47.21 (see image 3 ), imported ...

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Abstract

The invention relates to a rapid detection method for the highway roadbed compaction quality. The method comprises the following steps that firstly, in construction fields of roadbeds different in soil texture, a to-be-detected roadbed soil area is selected, a test point is selected at random, the dynamic deformation modulus Evd value of the point is tested, and data are recorded; secondly, another test point is selected, the roadbed compaction degree is detected through a sand filling method, and data are recorded; thirdly, the first step and the second step are repeatedly conducted, and therelation of the dynamic deformation modulus Evd value and the roadbed compaction degree K of each soil texture is established; fourthly, field testing is conducted; fifthly, data collection is clickedfrom a data collection software main interface, a testing instrument starts to conduct testing and transmission, and a background part conducts calculation and conversion according to the Evd and K correlation of the soil texture corresponding to the roadbed, and the compaction degree K is obtained; and sixthly, a detection result is uploaded to a roadbed compaction quality background managementsystem through the network, and the data are checked. The rapid detection method is rapid and convenient to conduct, data are accurate and reliable, the rapid detection method is applicable to the construction site, and the quality information can be reflected in real time.

Description

technical field [0001] The invention relates to the field of road engineering construction quality monitoring, in particular to a rapid detection method for roadbed compaction quality. Background technique [0002] The compaction quality of the subgrade directly determines the bearing capacity and deformation resistance of the subgrade, and also affects the service level and service life of the road. Insufficiently compacted subgrade filling body will inevitably produce excessive post-construction settlement, which will lead to a series of subgrade pavement diseases and engineering hidden dangers. As far as the filling subgrade is concerned, the key factors that determine the quality of the project are the composition of the filler and the compaction. [0003] Traditional subgrade compaction quality inspection methods, such as sand filling method, are complicated to operate, require a lot of manpower, take a long time to test, and cause great damage to the surface of the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/08
Inventor 李晓民赵河清魏晓春曹永军王海林张国宏魏定邦赵静卓
Owner 甘肃省交通规划勘察设计院股份有限公司
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