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Local strengthening method for road subgrade

A technology of local strengthening and subgrade, applied in the protection of roads, roads, soil, etc., can solve the problems of damage to subgrade, long detection time, low detection efficiency, etc., and achieve the effect of improving efficiency, high construction efficiency and convenient operation.

Pending Publication Date: 2021-11-09
吴海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technical solution needs to drill holes in the roadbed when testing, which not only damages the roadbed, but also needs to backfill the drilled holes. The detection efficiency is low and the detection takes a long time

Method used

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  • Local strengthening method for road subgrade
  • Local strengthening method for road subgrade
  • Local strengthening method for road subgrade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like Figure 4-6 As shown, a local strengthening method of a road subgrade includes the following steps: S1, subgrade detection, including the following steps, the first step, the detection host reads the electromagnetic wave echo data of the ground penetrating radar; the second step, the returned Perform data processing and data conversion on the electromagnetic wave echo to eliminate the influence of noise; the third step is to obtain the level map after encoding processing by the host computer, and perform edge detection processing on it; the fourth step is to obtain the subgrade by performing edge transformation processing on the level map Thickness, compaction and voiding of structural layers;

[0041] S2, subgrade compaction. During the compaction process, if it is detected that the subgrade is empty or the degree of compaction and thickness does not meet the requirements, the casing is pushed to drive the first helical gear and the second helical gear through the...

Embodiment 2

[0048] like Figure 1-3 As shown, a local reinforcement structure of a road subgrade includes a mechanical module and a detection module; the mechanical module includes a housing 1, and the bottom of the housing 1 is symmetrically provided with two runners 2, and the two runners 2 are connected with a rotating shaft 3, and the runner 2 is rotationally connected with the housing 1 through the rotating shaft 3. One end of the rotating shaft 3 is connected with a first helical gear 4, and the first helical gear 4 is meshed with a second helical gear 5. The center position of the second helical gear 5 is provided with a transmission rod 6 through which a drive mechanism is connected above the transmission rod 6 , and the lower end of the transmission rod 6 is rotationally connected with the housing 1 ;

[0049] The detection module includes a detection host, a ground penetrating radar, and the sending end of the ground penetrating radar sends electromagnetic waves to the roadbed, ...

Embodiment 3

[0055] On the basis of Embodiment 1, a spring 17 is provided between the pressure rod 14 and the pressure head 15 to increase the buffer between the pressure rod 14 and the pressure head 15 to prevent the downward impact force from being too large and the pressure head 15 to rebound, causing If the equipment is damaged, the rebound force F of the spring 17 and its pitch t, ​​length L and pitch D satisfy the following relationship: F=kD·(L / t) 2 ; k is the coefficient of elasticity, the value range is 20%-85%; the unit of F is N / m; the unit of t and L is cm. In order to ensure the compaction effect and prevent damage to the indenter 15 caused by excessive pressure, and the pressure is too small, the degree of subgrade compaction is not up to standard, the pressure F1 of the indenter 15 on the subgrade satisfies: F1=λ·mg+ kD·(L / t) 2 ;λ is the adjustment coefficient, the value range is 0.69-3.622.

[0056] The device obtained through the above technical solution is a local reinfo...

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Abstract

The invention discloses a local strengthening method for road subgrade, which comprises the steps of S1, subgrade detection and S2, subgrade compaction. In the compaction process, when it is detected that the subgrade is void or the compaction degree and the thickness do not meet the requirements, a shell is pushed, a first bevel gear and a second bevel gear are driven to rotate by rotation, meanwhile, a third bevel gear and a fourth bevel gear are driven to rotate by a transmission rod, when the third bevel gear rotates, a first cam and a second cam are driven to rotate by a coupler, a crankshaft further rotates along with the first cam and the second cam, the crankshaft drives a pressing rod and a pressing block to perform circulating reciprocating motion, and a subgrade is compacted by means of the gravity of a pressing head and the pressure of the pressing rod; meanwhile, in combination with a ground penetrating radar technology, a level map of electromagnetic wave echoes is acquired, and in combination with an edge detection technology, then edge conversion is performed according to the level map to accurately obtain the thickness, the compaction condition and the void condition of a subgrade structure layer, so that the detection efficiency is improved, the pavement is not damaged, the pavement is comprehensively detected, and problems can be timely found and treated.

Description

technical field [0001] The invention belongs to the technical field of road and bridge construction, and in particular relates to a local reinforcement method for road subgrades. Background technique [0002] As a special product, roads are greatly affected by geology, hydrology, climate, and environment, followed by a belt structure, which spans a large space and is difficult to manage, and is greatly affected by the privacy of various supervisors; while the roadbed is like the foundation of the road, it is time-consuming The key to ensuring road construction, however, due to the load and natural factors, the shape of the roadbed is deformed, resulting in landslides. Therefore, do a good job in roadbed reinforcement and safety monitoring to minimize the possibility of highway diseases and reduce their impact. [0003] Traditional subgrade reinforcement generally uses large-scale equipment for compaction or grouting to reinforce the damaged subgrade. The production cost is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E02D3/02G01S13/88G01V3/12G01V3/38
CPCE01C3/00E02D3/02G01V3/12G01V3/38G01S13/885
Inventor 吴海涛
Owner 吴海涛
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