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Method for detecting intensity of highway subgrade

A strength detection and roadbed technology, applied in the field of foundation soil survey, infrastructure engineering, construction, etc., can solve problems such as not being widely used

Inactive Publication Date: 2015-04-08
程培峰
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  • Application Information

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Problems solved by technology

At present, there are many methods for testing the strength of highway subgrade in China, such as bearing plate method, Beckman beam deflection method, on-site CBR and FWD drop weight deflection test methods. The rationality of the simulation, or the accuracy and convenience, cannot be widely used due to their respective limitations.

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  • Method for detecting intensity of highway subgrade
  • Method for detecting intensity of highway subgrade
  • Method for detecting intensity of highway subgrade

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Embodiment Construction

[0012] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0013] The invention provides a method for detecting the strength of road subgrade, and the specific implementation steps are as follows:

[0014] (1) Using the PANDA2 variable energy penetrometer to measure the penetration resistance q of subgrade soil at different depths d . Firstly, select the test road, select a filling subgrade test pile number every about 15km in the test road section, and arrange two test points on the central divider and soil road shoulder near the test pile number, and the details are as follows: figure 1 The penetration poin...

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Abstract

The invention discloses a method for detecting the intensity of a highway subgrade. The method comprises the following steps: 1, measuring penetration resistance qd of subgrade soil at different depths by a PANDA2 variable-energy penetrometer; 2, dividing

Description

technical field [0001] The invention relates to a method for detecting the roadbed strength. Background technique [0002] The subgrade is an important part of the road and the foundation of the pavement structure. A solid and stable subgrade provides an important guarantee for the long-term load of the pavement structure. The quality of the subgrade plays a decisive role in the durability of the long-term use of the road. . The occurrence of highway subgrade diseases is mostly related to the lack of subgrade strength. At the same time, with the increase of road construction mileage in our country, the roads built in the early stage have also entered the maintenance period. Therefore, how to quickly and effectively detect the strength of the roadbed plays a very important role in the analysis and evaluation of the technical status of the roadbed and the maintenance of the road. At present, there are many methods for testing the strength of highway subgrade in China, such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/00
CPCE02D1/00
Inventor 程培峰赵文美宇德忠尹传军范平
Owner 程培峰