CN104120703B - A kind of soil-stone embankment detection methods of compaction degree - Google Patents
A kind of soil-stone embankment detection methods of compaction degree Download PDFInfo
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- CN104120703B CN104120703B CN201410362998.XA CN201410362998A CN104120703B CN 104120703 B CN104120703 B CN 104120703B CN 201410362998 A CN201410362998 A CN 201410362998A CN 104120703 B CN104120703 B CN 104120703B
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Abstract
The invention provides a kind of soil-stone embankment detection methods of compaction degree, comprise the following steps: one, take soil-stone embankment; Two, adopt 5mm screen cloth to carry out screening and get oversize, calculate the rock-soil ratio P of soil-stone embankment
5; Three, the maximum particle diameter d of soil-stone embankment is filtered out
max; Four, the dynamic resilience modulus E of soil-stone embankment is measured
vd; Five, according to forecast model
Description
Technical field
The invention belongs to roadbed material detection technique field, be specifically related to a kind of soil-stone embankment detection methods of compaction degree.
Background technology
Soil-stone embankment has the advantages such as intensity is high, compacted density is large, sedimentation and deformation is little, water permeability is strong, scour resistance is high, can draw materials nearby, is commonly used as the filler of roadbed filling at home.But this embankment material grain graininess changes greatly and is difficult to control.
Existing soil-stone embankment mainly adopts sand replacement method and douche to detect Subgrade Compaction.But sand replacement method and the equal at substantial manpower of douche, and inefficiency.Meanwhile, sand replacement method and douche are mainly applicable to fine grained soils and detect, and are that the applicability of the soil-stone embankment of more than 60cm is lower to maximum particle diameter, and the degree of compaction result recorded and actual conditions are not inconsistent.
Other Compaction Degree Index Evaluation method mainly contains loaded plate method, flexure determination method (Benkleman beam deflectometer and FWD Falling Weight Deflectometer) etc.But the shortcoming that these means of testing all also exist testing time length, Ren Yuanduo, by-place should not arrive.
And the new technology such as radioactive ray detection method, Transient State Rayleigh Wave detection, also because there is various problem, be difficult to promote in detection soil-stone embankment degree of compaction.Therefore, a kind of quick, accurate, easy soil-stone embankment detection methods of compaction degree is found most important.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of soil-stone embankment detection methods of compaction degree.The method is little for the detection methods of compaction degree error of soil-stone embankment, and precision is high, and has very strong practicality, significantly can simplify testing process, and detection efficiency is largely increased.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of soil-stone embankment detection methods of compaction degree, and it is characterized in that, the method comprises the following steps:
Step one, to take diameter be 100mm ~ 200mm, and the degree of depth is the cylindric soil-stone embankment of 150mm ~ 250mm;
The screen cloth that step 2, employing screen size are 5mm sieves the soil-stone embankment taken in step one, gets oversize, then accounts for the percentage composition of soil-stone embankment gross mass according to the quality of oversize, calculate the rock-soil ratio P of soil-stone embankment
5;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
, then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment.
Above-mentioned a kind of soil-stone embankment detection methods of compaction degree, is characterized in that, the rock-soil ratio P of soil-stone embankment described in step 2
5meet: 40%≤P
5≤ 70%.
Above-mentioned a kind of soil-stone embankment detection methods of compaction degree, is characterized in that, the maximum particle diameter d of soil-stone embankment described in step 3
maxfor 60mm or 80mm.
Above-mentioned a kind of soil-stone embankment detection methods of compaction degree, is characterized in that, the dynamic resilience modulus E of soil-stone embankment described in step 4
vdmeet: 36MPa≤E
vd≤ 48MPa.
Above-mentioned a kind of soil-stone embankment detection methods of compaction degree, is characterized in that, the degree of compaction K of soil-stone embankment described in step 5 meets: K >=95%.
The present invention compared with prior art has the following advantages:
1, the present invention relates to the novel detection means of a kind of soil-stone material degree of compaction and standard, it loads by power the dynamic resilience modulus value detecting roadbed to monitor and evaluate roadbed filling quality.The present invention utilizes dynamic resilience modulus E
vdthe degree of compaction of soil-stone embankment is detected, no matter from definition, principle, or the aspect such as measuring accuracy, reliability and operability, the present invention has more significant reasonability and superiority relative to traditional sand replacement method.Dynamic resilience modulus E
vdfor dynamic test, meet soil body actual loading situation, and E
vdlittle, the quality of tester volume light, be easy to carry, install and convenient disassembly, easy and simple to handle, automaticity is high, test speed is fast, stable performance, measuring accuracy is high, testing cost is low, people-oriented in design, without any pollution, belong to Environmentally-sound technology.
2, the present invention adopts dynamic resilience modulus E
vddetect the degree of compaction of soil-stone embankment, really can realize the labour intensity significantly simplifying, alleviate testing crew of test method, improve detection efficiency, result of the test will be more realistic, more can ensure the accurate, objective of test result, reach and accelerate Roadbed Construction construction, improve the object of roadbed construction quality.
Below in conjunction with embodiment, the present invention is described in further detail.
Detailed description of the invention
Embodiment 1
The present embodiment soil-stone embankment detection methods of compaction degree comprises the following steps:
Step one, to take diameter be 150mm, and the degree of depth is the cylindric soil-stone embankment of 200mm;
Step 2, adopt screen size to be that the screen cloth of 5mm sieves the soil-stone embankment taken in step one, get oversize, the percentage composition then accounting for soil-stone embankment gross mass according to the quality of oversize calculates the rock-soil ratio P of soil-stone embankment
5, described P
5unit be %;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
, then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment, the unit of K is %.
The detection data of the present embodiment soil-stone embankment are in table 1.
The detection data of table 1 embodiment 1 soil-stone embankment
Adopt traditional sand replacement method to carry out compaction detect to soil-stone embankment, obtaining its degree of compaction is 98.61%.It can thus be appreciated that the present embodiment is little for the detection methods of compaction degree error of soil-stone embankment, and precision is high, and has very strong practicality, significantly can simplify testing process, makes detection efficiency be largely increased.
Embodiment 2
The present embodiment soil-stone embankment detection methods of compaction degree comprises the following steps:
Step one, to take diameter be 180mm, and the degree of depth is the cylindric soil-stone embankment of 210mm;
Step 2, adopt screen size to be that the screen cloth of 5mm sieves the soil-stone embankment taken in step one, get oversize, the percentage composition then accounting for soil-stone embankment gross mass according to the quality of oversize calculates the rock-soil ratio P of soil-stone embankment
5, described P
5unit be %;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
, then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment, the unit of K is %.
The detection data of the present embodiment soil-stone embankment are in table 2.
The detection data of table 2 embodiment 2 soil-stone embankment
Adopt traditional sand replacement method to carry out compaction detect to soil-stone embankment, obtaining degree of compaction is 94.36%.It can thus be appreciated that the present embodiment is little for the detection methods of compaction degree error of soil-stone embankment, and precision is high, and has very strong practicality, significantly can simplify testing process, makes detection efficiency be largely increased.
Embodiment 3
The present embodiment soil-stone embankment detection methods of compaction degree comprises the following steps:
Step one, to take diameter be 150mm, and the degree of depth is the cylindric soil-stone embankment of 250mm;
Step 2, adopt screen size to be that the screen cloth of 5mm sieves the soil-stone embankment taken in step one, get oversize, the percentage composition then accounting for soil-stone embankment gross mass according to the quality of oversize calculates the rock-soil ratio P of soil-stone embankment
5, described P
5unit be %;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
, then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment, the unit of K is %.
The detection data of the present embodiment soil-stone embankment are in table 3.
The detection data of table 3 embodiment 3 soil-stone embankment
Adopt traditional sand replacement method to carry out compaction detect to soil-stone embankment, obtaining degree of compaction is 95.11%.It can thus be appreciated that the present embodiment is little for the detection methods of compaction degree error of soil-stone embankment, and precision is high, and has very strong practicality, significantly can simplify testing process, makes detection efficiency be largely increased.
Embodiment 4
The present embodiment soil-stone embankment detection methods of compaction degree comprises the following steps:
Step one, to take diameter be 150mm, and the degree of depth is the cylindric soil-stone embankment of 250mm;
Step 2, adopt screen size to be that the screen cloth of 5mm sieves the soil-stone embankment taken in step one, get oversize, the percentage composition then accounting for soil-stone embankment gross mass according to the quality of oversize calculates the rock-soil ratio P of soil-stone embankment
5, described P
5unit be %;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
, then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment, the unit of K is %.
The detection data of the present embodiment soil-stone embankment are in table 4.
The detection data of table 4 embodiment 4 soil-stone embankment
Adopt traditional sand replacement method to carry out compaction detect to soil-stone embankment, obtaining degree of compaction is 95.92%.It can thus be appreciated that the present embodiment is little for the detection methods of compaction degree error of soil-stone embankment, and precision is high, and has very strong practicality, significantly can simplify testing process, makes detection efficiency be largely increased.
Embodiment 5
The present embodiment soil-stone embankment detection methods of compaction degree comprises the following steps:
Step one, to take diameter be 150mm, and the degree of depth is the cylindric soil-stone embankment of 250mm;
Step 2, adopt screen size to be that the screen cloth of 5mm sieves the soil-stone embankment taken in step one, get oversize, the percentage composition then accounting for soil-stone embankment gross mass according to the quality of oversize calculates the rock-soil ratio P of soil-stone embankment
5, described P
5unit be %;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
, then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment, the unit of K is %.
The detection data of the present embodiment soil-stone embankment are in table 5.
The detection data of table 5 embodiment 5 soil-stone embankment
Adopt traditional sand replacement method to carry out compaction detect to soil-stone embankment, obtaining degree of compaction is 95.2%.It can thus be appreciated that the present embodiment is little for the detection methods of compaction degree error of soil-stone embankment, and precision is high, and has very strong practicality, significantly can simplify testing process, makes detection efficiency be largely increased.
Embodiment 6
The present embodiment soil-stone embankment detection methods of compaction degree comprises the following steps:
Step one, to take diameter be 150mm, and the degree of depth is the cylindric soil-stone embankment of 250mm;
Step 2, adopt screen size to be that the screen cloth of 5mm sieves the soil-stone embankment taken in step one, get oversize, the percentage composition then accounting for soil-stone embankment gross mass according to the quality of oversize calculates the rock-soil ratio P of soil-stone embankment
5, described P
5unit be %;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
, then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment, the unit of K is %.
The detection data of the present embodiment soil-stone embankment are in table 6.
The detection data of table 6 embodiment 6 soil-stone embankment
Adopt traditional sand replacement method to carry out compaction detect to soil-stone embankment, obtaining degree of compaction is 97.2%.It can thus be appreciated that the present embodiment is little for the detection methods of compaction degree error of soil-stone embankment, and precision is high, and has very strong practicality, significantly can simplify testing process, makes detection efficiency be largely increased.
The above is only preferred embodiment of the present invention, not imposes any restrictions the present invention.Every above embodiment is done according to invention technical spirit any simple modification, change and equivalence change, all still belong in the protection domain of technical solution of the present invention.
Claims (2)
1. a soil-stone embankment detection methods of compaction degree, is characterized in that, the method comprises the following steps:
Step one, to take diameter be 100mm ~ 200mm, and the degree of depth is the cylindric soil-stone embankment of 150mm ~ 250mm;
The screen cloth that step 2, employing screen size are 5mm sieves the soil-stone embankment taken in step one, gets oversize, then accounts for the percentage composition of soil-stone embankment gross mass according to the quality of oversize, calculate the rock-soil ratio P of soil-stone embankment
5;
Step 3, the soil-stone embankment taken in step one to be screened, filter out the maximum particle diameter d of soil-stone embankment
max, described d
maxunit be mm;
Step 4, utilize Handheld type drop hammer deflectometer to carry out the detection of dynamic resilience modulus to the soil-stone embankment taken in step one, record the dynamic resilience modulus E of soil-stone embankment
vd, described E
vdunit be MPa;
Step 5, set up forecast model
Then according to the rock-soil ratio P of the soil-stone embankment obtained in step 2
5, the maximum particle diameter d of soil-stone embankment that obtains in step 3
maxand the dynamic resilience modulus E of the soil-stone embankment obtained in step 4
vd, calculate the degree of compaction K of soil-stone embankment;
The rock-soil ratio P of soil-stone embankment described in step 2
5meet: 40%≤P
5≤ 70%;
The maximum particle diameter d of soil-stone embankment described in step 3
maxfor 60mm or 80mm;
The dynamic resilience modulus E of soil-stone embankment described in step 4
vdmeet: 36MPa≤E
vd≤ 48MPa.
2. a kind of soil-stone embankment detection methods of compaction degree according to claim 1, is characterized in that, the degree of compaction K of soil-stone embankment described in step 5 meets: K >=95%.
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CN105158436B (en) * | 2015-07-28 | 2017-01-25 | 中铁城市规划设计研究院有限公司 | Detection method for gravel-soil compactness detection index |
CN108396723A (en) * | 2018-01-31 | 2018-08-14 | 甘肃省交通规划勘察设计院股份有限公司 | A kind of highway subgrade compaction quality rapid detection method |
CN109839497B (en) * | 2019-02-15 | 2020-05-12 | 武汉理工大学 | Indoor calibration device and calibration method for medium and coarse particle filler compaction detection depth |
CN110512582B (en) * | 2019-08-22 | 2021-03-30 | 长安大学 | Layered detection method for roadbed compactness |
CN111122664A (en) * | 2020-01-03 | 2020-05-08 | 重庆交通大学 | High-fill foundation overall quality evaluation method |
CN112064617B (en) * | 2020-09-07 | 2022-04-05 | 南方电网能源发展研究院有限责任公司 | Soil-stone mixture foundation quality detection method |
CN112942294B (en) * | 2021-05-13 | 2021-08-31 | 西南交通大学 | Roadbed uniformity detection method, device and equipment and readable storage medium |
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CN102345285A (en) * | 2011-07-11 | 2012-02-08 | 湖南大学 | Soil and stone mixed filling roadbed compaction degree detecting method |
CN102493422B (en) * | 2011-11-11 | 2014-06-11 | 中国民航大学 | Nondestructive testing method for compaction quality of rock-soil filled foundation |
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