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Safety state fast non-destructive detection method of operation roadbed

A non-destructive testing and safety state technology, applied in the field of foundation soil survey, roads, roads, etc., can solve the problem of not establishing dynamic deformation modulus and foundation coefficient analysis models, not quantitatively analyzing subgrade mechanics indicators and hidden dangers, and lack of quantitative indicators. Research on comparative test research and other issues to achieve the effect of light weight, short detection period and fewer risk factors

Active Publication Date: 2010-03-31
铁三院(天津)工程有限公司
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Problems solved by technology

[0006] However, in these works, only one of the ground radar detection method and the Rayleigh wave detection method was used for research and discussion, and no comprehensive application method was given to obtain better detection results. At the same time, due to the lack of quantitative indicators There is no technical standard for quantitative analysis of roadbed mechanical indicators and hidden dangers, and no related analysis models for dynamic deformation modulus and foundation coefficient have been established. Therefore, so far, there is no one that can widely analyze the roadbed in operation A comprehensive and rapid non-destructive testing method for the safe state of the subgrade

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  • Safety state fast non-destructive detection method of operation roadbed
  • Safety state fast non-destructive detection method of operation roadbed
  • Safety state fast non-destructive detection method of operation roadbed

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Embodiment Construction

[0034] The present invention will be described in further detail below through specific examples. The following examples are only descriptive and not restrictive, and the protection scope of the present invention cannot be limited by this.

[0035] A method for fast and non-destructive inspection of the safety status of the roadbed in operation, using the geological radar detection method to compare and observe the images generated by the geological radar, as shown in the following table:

[0036]

[0037] Determine the geometry, depth of the disease and the scale of the development along the route, and adopt the formula:

[0038] ω = ( 1 - 7.7851 ϵ + 4.9151 ) X 100 %

[0039] Calculate the water content of the roadbed, where ω represents the water content and ε represents the dielectric constant of the base layer;

[0040] To determine the size of the bearing capacity of the roadbed and its variation range, the Rayleigh wave velocity V R Value con...

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Abstract

The invention relates to a safety state fast non-destructive detection method of operation roadbed, the method comprises steps: performing full cover scanning on a detected roadbed by adopting a geology radar to obtain a geology radar image and a dielectric constant of the detected roadbed; detecting Rayleigh velocities VR obtained by each detection point by a wave detector adopting a Rayleigh wave method; performing a penetration detection by a light type power penetrometer to record the hammering numbers N10; obtaining information of a roadbed integral state by analysis and comparison. The invention provides the non-destructive detection method and theoretical system for evaluating the safety state of the operation roadbed, the invention can be widely used for detecting integral states of various roadbeds, has characteristics of wide application range and comprehensive evaluation index; meanwhile, the invention can be applied to the operation roadbed, without damaging the road facilities, the detection construction period can be greatly shortened, and the detection coat can be reduced.

Description

Technical field [0001] The invention belongs to the field of civil engineering and construction engineering, in particular to a method for fast and non-destructive detection of the safety state of an operating roadbed. Background technique [0002] Defects such as roadbed diseases and insufficient bearing capacity directly affect the safe operation of roadbeds. The traditional roadbed evaluation methods generally first go through geological surveys to find the distribution areas of roadbed diseases, and through drilling sampling, sand filling method, K 30 , Dynamic penetration testing and indoor laboratory testing methods to determine the type of roadbed disease and roadbed water content, bearing capacity, density and other indicators, to evaluate the quality of the roadbed. The disadvantage of the traditional method is that there are few measurement points and only reflect the information of one point or one hole of the roadbed. Because the detection points are not continuous, t...

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Application Information

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IPC IPC(8): E01C3/00E02D1/00E02D1/08
Inventor 薄会申张继令李志华郭志强郝明苗庆库王银朱旭东董晨刘黎东李铂王灿为张恩义李燕徐德印
Owner 铁三院(天津)工程有限公司
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