CN113218817A - Roadbed strength test method for highway test detection - Google Patents
Roadbed strength test method for highway test detection Download PDFInfo
- Publication number
- CN113218817A CN113218817A CN202110372629.9A CN202110372629A CN113218817A CN 113218817 A CN113218817 A CN 113218817A CN 202110372629 A CN202110372629 A CN 202110372629A CN 113218817 A CN113218817 A CN 113218817A
- Authority
- CN
- China
- Prior art keywords
- detection
- roadbed
- test method
- strength test
- sound wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/24—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing the transmission of wave or particle radiation through the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02827—Elastic parameters, strength or force
Abstract
The invention discloses a roadbed strength test method for highway test detection, which relates to the technical field of highway engineering detection and comprises the following steps: when the device is used, the roadbed surface layer with the diameter of about 100cm around the measuring point is leveled, when the device is used, the detection device is placed on the leveled roadbed surface layer, the detection sound detection pipe is in contact with the roadbed surface layer in a fitting manner, the detection device is started, and when the device is used, the medium level and density are measured and calculated by utilizing the transmission of sound waves of the same waveband in a medium. According to the invention, after the detection results obtained by the control display are compared, the sound wave transmission rate in the material spectrum is compared, if the density-strength curve of each medium layer subgrade base layer of the subgrade base layer has great deviation, the detection of the same-frequency sound wave or the different-frequency sound wave at the same position is required for multiple times, and the requirement rule is converted for later evaluation, so that the service life and the detection efficiency of the highway subgrade are obviously improved.
Description
Technical Field
The invention relates to a test method for detecting roadbed strength, relates to the technical field of highway engineering detection, and particularly relates to a roadbed strength test method for highway test detection.
Background
The roadbed is an important component of the highway and is the foundation of a pavement structure, the firm and stable roadbed provides important guarantee for the pavement structure to bear the automobile load for a long time, the quality of the roadbed plays a decisive role in the long-term use durability of the highway, and the generation of highway roadbed diseases is mostly related to the insufficient strength of the roadbed.
The following problems exist in the prior art:
1. when the strength of the highway subgrade is detected, a variable-energy light dynamic penetrometer is often adopted to measure the penetration resistance of subgrade soil at different depths or an FWD (FWD) falling weight deflectometer is adopted to detect the stress of the subgrade, and the accuracy and convenience during detection have certain limitations, so that the problems of complicated detection test method and waste of time of testers are caused;
2. according to most of existing detection methods and instruments, when the compressive strength of a roadbed is detected, a certain external force needs to be applied to the roadbed, even a circular cutting mode needs to be adopted to collect partial roadbed materials for testing, the roadbed is damaged in a certain interval, multiple tests are difficult to carry out, errors caused by various factors during detection are reduced, the service life of the roadbed is shortened, and the detection efficiency is reduced.
Disclosure of Invention
The invention provides a roadbed strength test method for highway test detection, which aims to have the capability of convenient detection and solve the problems that the roadbed stress detection is carried out by adopting a variable energy light dynamic penetrometer to measure the penetration resistance of roadbed soil at different depths or an FWD falling weight deflectometer, the precision and convenience in detection are limited to a certain extent, the detection test method is complicated and the time of a tester is wasted; when solving to the compressive strength of road bed and examining, wherein another kind of purpose need apply certain external force to the road bed, need adopt the circular cutting mode to gather partial road bed material even and test, can cause the damage of certain interval to the road bed, be difficult to carry out a lot of tests, reduce the error that produces because of various factors when examining, lead to the life reduction of road bed, problem that detection efficiency reduces to reach the life who improves road bed and detection efficiency's effect.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a roadbed strength test method for highway test detection comprises the following steps:
step one, when the method is used, leveling the roadbed surface layer with the diameter of about 100cm around a measuring point;
step two, when the detection device is used, the detection device is placed on the leveled roadbed surface layer, so that the detection sound detection pipe is in contact with the roadbed surface layer in a fitting manner, and the detection device is started;
when the detection device is used, the medium level and density are measured and calculated by using the transmission of sound waves in the same wave band in the medium, and then the speed of the sound waves in different media is collected and recorded by the sound wave transmitting transducer;
and step four, after the detection result obtained by the display is compared and controlled, unloading the detection device, replacing the detection point, and repeating the step one to carry out secondary measurement.
The technical scheme of the invention is further improved as follows: the process of the second step further comprises the following steps: the detection device comprises a fixing mechanism, the fixing mechanism comprises a fixing platform and a hydraulic rod, detection mechanisms are arranged at two ends of the detection device, the hydraulic rod is used for adjusting the height of the detection device, and after the detection device is adjusted by the hydraulic rod, the detection mechanisms are in contact with the roadbed surface layer after leveling.
Adopt above-mentioned technical scheme, fixed station, hydraulic stem and detection mechanism in this scheme cooperate jointly, have ensured the device stability when detecting, reduce the error that detects the production simultaneously.
The technical scheme of the invention is further improved as follows: the detection mechanism comprises a sound wave transmitting transducer, the outer surface of the sound wave transmitting transducer is fixedly connected with the outer surface of the detection sounding pipe, and the detection sounding pipes are uniformly distributed on the outer surface of the sound wave transmitting transducer.
By adopting the technical scheme, the sound wave transmitting transducer and the detection sounding pipe in the scheme are matched together, and multiple sections of sound waves are detected simultaneously, so that the detection efficiency is improved.
The technical scheme of the invention is further improved as follows: the process of the third step further comprises: the sound wave transmitting transducer periodically transmits sound waves of the same waveband, the sound waves are transmitted and reflected and collected by the sound detection tube in a matched mode, the signal transmission module is arranged inside the sound wave transmitting transducer, and the reflected and collected sound waves are transmitted to the detection control display through the signal transmission module.
By adopting the technical scheme, the sound wave transmitting transducer, the signal transmission module and the detection control display in the scheme are matched together to collect and convert the speed during sound wave detection.
The technical scheme of the invention is further improved as follows: the process of the third step further comprises: and matching big data by comparing the speed of the sound wave recorded by the sound wave transmitting transducer in different media with the density of different roadbed layers in the material map.
By adopting the technical scheme, the density of different roadbed layers in the contrast material atlas in the scheme is subjected to big data matching, so that the manpower is saved, and the detection precision is improved.
The technical scheme of the invention is further improved as follows: the process of the third step further comprises: and measuring and calculating the speed of sound waves in the same roadbed medium by using the data generated by matching to obtain the water content of the roadbed base, simultaneously measuring and calculating whether cracks exist in the roadbed base and the compactness of each layer of roadbed, and drawing a density-strength curve of the roadbed base.
By adopting the technical scheme, the speed of the sound wave in the same roadbed medium is matched with the density-strength curve of the roadbed base layer together, and the water content of the roadbed base layer, whether cracks exist in the roadbed base layer and the compactness of each layer of roadbed can be obtained through comparison, so that the roadbed strength can be obtained.
The technical scheme of the invention is further improved as follows: the process of the fourth step further comprises: after the detection results obtained by the control display are compared, if the density-intensity curves of the medium layers, the roadbed bases and the roadbed bases of the roadbed bases have great deviation, the detection of multiple same-frequency sound waves or different-frequency sound waves at the same position is required, and the requirement rule is converted for later evaluation.
By adopting the technical scheme, the detection of the same-frequency sound wave or different-frequency sound waves at the same position is carried out for multiple times, the influence generated in the detection of the same-frequency sound waves is reduced, the precision is ensured, and the roadbed cannot be damaged.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:
1. the invention provides a roadbed strength test method for highway test detection, which comprises the steps of placing a detection device on a leveled roadbed surface layer, enabling a detection sound measuring pipe to be in contact with the roadbed surface layer in a fitting manner, then starting the detection device, matching with a sound wave transmitting transducer to periodically transmit sound waves of the same waveband, matching with the detection sound measuring pipe to carry out transmission and reflection collection of the sound waves, utilizing a signal transmission module arranged in the sound wave transmitting transducer to transmit the sound waves collected by reflection to a detection control display, unloading the detection device after comparing detection results obtained by the control display, replacing detection points for detection, avoiding the situation that a variable energy light dynamic contact detector is adopted to measure penetration resistance of roadbed soil of different depths or a FWD drop hammer type deflectometer to carry out roadbed stress detection, and having certain limitations on precision and convenience during detection, the method for detecting the test is complicated, and the time of a tester is wasted, so that the effects of simplifying the detection test method and saving the time of the tester are achieved.
2. The invention provides a roadbed strength test method for highway test detection, which comprises the steps of comparing the detection results obtained by a control display, comparing the sound wave transmission rate in the material atlas, if the density-intensity curve of each medium layer roadbed base layer of the roadbed base layer has great deviation, the detection of multiple same-frequency sound waves or different-frequency sound waves at the same position is required, the requirement rule is converted, the method is used for evaluating the later stage, avoids the problem that when the compressive strength of the roadbed is detected, certain external force needs to be applied to the roadbed, even part of roadbed materials need to be collected in a circular cutting mode for testing, the roadbed is damaged in a certain interval, multiple tests are difficult to carry out, errors caused by various factors during detection are reduced, the service life of the highway roadbed is shortened, and the detection efficiency is reduced, so that the effects of prolonging the service life of the highway roadbed and improving the detection efficiency are achieved.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
fig. 2 is a schematic flow chart of the roadbed strength detection device according to the invention;
fig. 3 is a schematic diagram of the acoustic atlas generation process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
example 1
As shown in fig. 1 to 3, the present invention provides a roadbed strength test method for highway test detection, which comprises the following steps:
step one, when the method is used, leveling the roadbed surface layer with the diameter of about 100cm around a measuring point;
step two, when the detection device is used, the detection device is placed on the leveled roadbed surface layer, so that the detection sound detection pipe is in contact with the roadbed surface layer in a fitting manner, and the detection device is started;
when the detection device is used, the medium level and density are measured and calculated by using the transmission of sound waves in the same wave band in the medium, and then the speed of the sound waves in different media is collected and recorded by the sound wave transmitting transducer;
and step four, after the detection result obtained by the display is compared and controlled, unloading the detection device, replacing the detection point, and repeating the step one to carry out secondary measurement.
Wherein the process of the second step further comprises: the detection device comprises a fixing mechanism, the fixing mechanism comprises a fixing platform and a hydraulic rod, detection mechanisms are arranged at two ends of the detection device, the hydraulic rod is used for adjusting the height of the detection device, and after the detection device is adjusted by the hydraulic rod, the detection mechanisms are in contact with the leveled roadbed surface layer in a fitting mode.
The detection mechanism comprises a sound wave transmitting transducer, the outer surface of the sound wave transmitting transducer is fixedly connected with the outer surface of the detection sounding pipe, and the detection sounding pipe is uniformly distributed on the outer surface of the sound wave transmitting transducer.
In this embodiment, through placing detection device on the road bed top layer after making level, make detection sounding pipe and road bed top layer laminating contact, utilize detection device, cooperation sound wave transmitting transducer periodically transmits same wave band sound wave, the transport and the reflection of sound wave are collected to rethread detection sounding pipe, then behind the testing result that acquires through the contrast control display, uninstall detection device, change the check point and detect, when having avoided adopting traditional detection mode to detect road bed intensity, precision and convenience when detecting all have certain limitation, it is loaded down with trivial details to lead to the method of test, the problem of extravagant tester's time, thereby reached and simplified the test method, the effect of tester time is saved.
Example 2
As shown in fig. 1-3, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the process of step three further comprises: the sound wave transmitting transducer periodically transmits sound waves with the same wave band, the sound waves are transmitted and reflected and collected by matching with the detection sound detecting pipe, a signal transmitting module is arranged inside the sound wave transmitting transducer, the sound waves which are reflected and collected are transmitted to the detection control display through the signal transmitting module, the speed of the sound waves recorded by the sound wave transmitting transducer in different media is compared with the density of different roadbed layers in a material map, big data matching is carried out, the speed of the sound waves in the same roadbed medium is measured and calculated by using data generated by matching, the water content of the roadbed basement layer is obtained, meanwhile, whether cracks exist in the roadbed basement layer and the compactness of each layer of roadbed are measured and a density-intensity curve of the roadbed is drawn.
In this embodiment, carry out the transport and the reflection of sound wave and collect through detecting the sounding pipe, utilize the inside signal transmission module that sets up of sound wave transmitting transducer, transmit the sound wave that the signal transmission module will reflect the collection to the detection control display in, simultaneously through the density of different roadbed layers in the contrast material map, carry out big data matching, draw roadbed base layer density-intensity curve, then after obtaining the result that detects through the contrast control display, uninstall detection device, change the check point and detect, make the efficiency of detection more high-efficient, the damage to the roadbed has been reduced, the time of detection personnel has further been saved, the cost consumption of detection has been reduced.
Example 3
As shown in fig. 1-3, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the process of step four further comprises: after the detection results obtained by the control display are compared, if the density-intensity curves of the medium layers, the roadbed bases and the roadbed bases of the roadbed bases have great deviation, the detection of multiple same-frequency sound waves or different-frequency sound waves at the same position is required, and the requirement rule is converted for later evaluation.
In this embodiment, through contrast testing result, compare the sound wave transmission rate in the material atlas, if the deviation appears in the testing result too big, can in time carry out the detection of same position same frequency sound wave many times or different frequency sound wave, the demand law, convert, be used for the evaluation in later stage, avoided detecting time measuring to the compressive strength of road bed, need apply certain external force to the road bed, need adopt the circular cutting mode to gather partial road bed material even and test, can cause the damage of certain interval to the road bed, be difficult to carry out many times of tests, reduce the error that detects time measuring and produce because of various factors, lead to the life reduction of highway road bed, the problem that detection efficiency reduces, thereby the effect of life and the detection efficiency of improvement highway road bed has been reached.
The invention periodically emits sound waves with the same wave band through the sound wave emitting transducer, and then transmits and reflects and collects the sound waves through the detecting sound detecting tube, then a signal transmission module arranged in the sound wave transmitting transducer is utilized to transmit the reflected and collected sound waves to a detection control display, meanwhile, the density of different roadbed layers in the material map is compared, big data matching is carried out, a roadbed base density-strength curve is drawn, the water content of the roadbed base is obtained, and simultaneously, whether cracks exist in the roadbed base layer and the compaction degree of each layer of roadbed are measured and calculated, so that the aim of rapid nondestructive detection is fulfilled, and if a detection result has larger deviation with a material map, can detect multiple same-frequency sound waves or different-frequency sound waves at the same position in time, needs rules and carries out conversion, the method is used for later evaluation, multiple tests are carried out, and errors caused by various factors during detection are reduced.
The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.
Claims (7)
1. A roadbed strength test method for highway test detection is characterized by comprising the following steps: the roadbed strength test method for highway test detection comprises the following steps:
step one, when the method is used, leveling the roadbed surface layer with the diameter of about 100cm around a measuring point;
step two, when the detection device is used, the detection device is placed on the leveled roadbed surface layer, so that the detection sound detection pipe is in contact with the roadbed surface layer in a fitting manner, and the detection device is started;
when the detection device is used, the medium level and density are measured and calculated by using the transmission of sound waves in the same wave band in the medium, and then the speed of the sound waves in different media is collected and recorded by the sound wave transmitting transducer;
and step four, after the detection result obtained by the display is compared and controlled, unloading the detection device, replacing the detection point, and repeating the step one to carry out secondary measurement.
2. The roadbed strength test method for highway test detection according to claim 1, wherein the roadbed strength test method comprises the following steps: the process of the second step further comprises the following steps: the detection device comprises a fixing mechanism, the fixing mechanism comprises a fixing platform and a hydraulic rod, detection mechanisms are arranged at two ends of the detection device, the hydraulic rod is used for adjusting the height of the detection device, and after the detection device is adjusted by the hydraulic rod, the detection mechanisms are in contact with the roadbed surface layer after leveling.
3. The roadbed strength test method for highway test detection according to claim 2, wherein the roadbed strength test method comprises the following steps: the detection mechanism comprises a sound wave transmitting transducer, the outer surface of the sound wave transmitting transducer is fixedly connected with the outer surface of the detection sounding pipe, and the detection sounding pipes are uniformly distributed on the outer surface of the sound wave transmitting transducer.
4. The roadbed strength test method for highway test detection according to claim 1, wherein the roadbed strength test method comprises the following steps: the process of the third step further comprises: the sound wave transmitting transducer periodically transmits sound waves of the same waveband, the sound waves are transmitted and reflected and collected by the sound detection tube in a matched mode, the signal transmission module is arranged inside the sound wave transmitting transducer, and the reflected and collected sound waves are transmitted to the detection control display through the signal transmission module.
5. The roadbed strength test method for highway test detection according to claim 1, wherein the roadbed strength test method comprises the following steps: the process of the third step further comprises: and matching big data by comparing the speed of the sound wave recorded by the sound wave transmitting transducer in different media with the density of different roadbed layers in the material map.
6. The roadbed strength test method for the road test detection according to claim 5, wherein the roadbed strength test method comprises the following steps: the process of the third step further comprises: and measuring and calculating the speed of sound waves in the same roadbed medium by using the data generated by matching to obtain the water content of the roadbed base, simultaneously measuring and calculating whether cracks exist in the roadbed base and the compactness of each layer of roadbed, and drawing a density-strength curve of the roadbed base.
7. The roadbed strength test method for highway test detection according to claim 1, wherein the roadbed strength test method comprises the following steps: the process of the fourth step further comprises: after the detection results obtained by the control display are compared, if the density-intensity curves of the medium layers, the roadbed bases and the roadbed bases of the roadbed bases have great deviation, the detection of multiple same-frequency sound waves or different-frequency sound waves at the same position is required, and the requirement rule is converted for later evaluation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372629.9A CN113218817A (en) | 2021-04-07 | 2021-04-07 | Roadbed strength test method for highway test detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372629.9A CN113218817A (en) | 2021-04-07 | 2021-04-07 | Roadbed strength test method for highway test detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113218817A true CN113218817A (en) | 2021-08-06 |
Family
ID=77086575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110372629.9A Pending CN113218817A (en) | 2021-04-07 | 2021-04-07 | Roadbed strength test method for highway test detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113218817A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720327A (en) * | 2022-03-08 | 2022-07-08 | 山东高速济青中线公路有限公司 | Evaluation method for evaluating detection reliability of stone-containing roadbed sand-filling method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491839Y (en) * | 2001-06-14 | 2002-05-15 | 刘书民 | Highway nondestructive detector |
| CN103669184A (en) * | 2013-12-25 | 2014-03-26 | 河南省高远公路养护技术有限公司 | Invisible disease detection method of pavement structure layer |
| CN106295505A (en) * | 2016-07-25 | 2017-01-04 | 江苏中路新材料科技发展有限公司 | State estimating system during pavement usage |
| CN110133099A (en) * | 2019-05-11 | 2019-08-16 | 四川大学 | Rock-fill dams Controls for Compaction Quality based on soil resonance frequency |
| CN110376645A (en) * | 2019-08-02 | 2019-10-25 | 中国石油大学(北京) | A kind of determination method, device and equipment of Thin Sandbody top interface location |
| CN111042096A (en) * | 2019-12-24 | 2020-04-21 | 河海大学 | Rapid detection and evaluation method for light soil subgrade |
| CN111650087A (en) * | 2020-07-13 | 2020-09-11 | 吉林省交通科学研究所 | Nondestructive testing method and testing equipment for strength of semi-rigid base layer |
| CN112376533A (en) * | 2020-11-26 | 2021-02-19 | 福建船政交通职业学院 | Method for detecting roadbed deep filling quality by surface wave method |
-
2021
- 2021-04-07 CN CN202110372629.9A patent/CN113218817A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491839Y (en) * | 2001-06-14 | 2002-05-15 | 刘书民 | Highway nondestructive detector |
| CN103669184A (en) * | 2013-12-25 | 2014-03-26 | 河南省高远公路养护技术有限公司 | Invisible disease detection method of pavement structure layer |
| CN106295505A (en) * | 2016-07-25 | 2017-01-04 | 江苏中路新材料科技发展有限公司 | State estimating system during pavement usage |
| CN110133099A (en) * | 2019-05-11 | 2019-08-16 | 四川大学 | Rock-fill dams Controls for Compaction Quality based on soil resonance frequency |
| CN110376645A (en) * | 2019-08-02 | 2019-10-25 | 中国石油大学(北京) | A kind of determination method, device and equipment of Thin Sandbody top interface location |
| CN111042096A (en) * | 2019-12-24 | 2020-04-21 | 河海大学 | Rapid detection and evaluation method for light soil subgrade |
| CN111650087A (en) * | 2020-07-13 | 2020-09-11 | 吉林省交通科学研究所 | Nondestructive testing method and testing equipment for strength of semi-rigid base layer |
| CN112376533A (en) * | 2020-11-26 | 2021-02-19 | 福建船政交通职业学院 | Method for detecting roadbed deep filling quality by surface wave method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720327A (en) * | 2022-03-08 | 2022-07-08 | 山东高速济青中线公路有限公司 | Evaluation method for evaluating detection reliability of stone-containing roadbed sand-filling method |
| CN114720327B (en) * | 2022-03-08 | 2023-08-29 | 山东高速济青中线公路有限公司 | Evaluation method for evaluating detection reliability of stone-containing roadbed sand filling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kaczmarek et al. | Noncontact ultrasonic nondestructive techniques: state of the art and their use in civil engineering | |
| US20180348169A1 (en) | System and Method for Assessment of Irregularity in a Wooden Material Surrounded by a Substrate | |
| CN107328496B (en) | A method of based on rail vertical motion Characteristics Detection rail longitudinal force | |
| CN103293221A (en) | Non-destructive inspection apparatus for detecting internal defect of concrete structure using ultrasonic waves | |
| CN102565198A (en) | Wireless ultrasonic probe assembly for flaw detection of crawler-type steel rail and flaw detection method of wireless ultrasonic probe assembly | |
| CN109253921A (en) | A kind of detection concrete test block intensity evaluation method | |
| CN106950282A (en) | A kind of fiber reinforced plastics rod defect inspection method and system based on longitudinal ultrasonic guided wave | |
| CN103713050B (en) | A kind of laser receiver measures the method for the die-away curve of seismic event in rock | |
| CN106770643B (en) | Method for detecting pile bottom grouting effect of expanded-bottom cast-in-place pile based on sound wave propagation principle | |
| CN113218817A (en) | Roadbed strength test method for highway test detection | |
| CN112014475A (en) | Method for detecting compaction quality of coarse-particle soil roadbed filler based on shear wave velocity | |
| CN103852521B (en) | A kind of method of ultrasound examination multilayered medium coupling mass | |
| CN102854090A (en) | Detection device and method of liquid viscosity coefficient based on ultrasonic guided wave | |
| CN108956774A (en) | A kind of detection method of the road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse | |
| CN110161118A (en) | A kind of steel plate crack detecting method based on supersonic guide-wave principle | |
| CN112857698B (en) | Method for detecting wall leakage based on surface acoustic waves | |
| CN108414371A (en) | A kind of lossless detection method of asphalt pavement crack situation | |
| CN104594395A (en) | Operation railroad bed side drilling pile foundation detection structure and detection method | |
| JP2007047094A (en) | Method and apparatus for determining damage of structure using ae source for one-dimensional location | |
| CN204435440U (en) | Railway in operation roadbed side Bored Pile Foundation detection architecture | |
| CN115184457A (en) | Edge defect identification method and measurement device based on lamb wave mode separation | |
| CN212275668U (en) | Scanning type impact echo method concrete structure reinforcing steel bar nondestructive testing equipment | |
| CN201221941Y (en) | Transducer support | |
| CN110656665B (en) | Automatic detection system and method for multi-pipeline ultrasonic nondestructive detection and three-dimensional modeling positioning dead pixel | |
| Sohaney et al. | New ISO test track specification for measuring tire and vehicle noise |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210806 |