CN101929167A - Ultrasonic side-hole detection method for detecting pile length - Google Patents
Ultrasonic side-hole detection method for detecting pile length Download PDFInfo
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- CN101929167A CN101929167A CN 201010243834 CN201010243834A CN101929167A CN 101929167 A CN101929167 A CN 101929167A CN 201010243834 CN201010243834 CN 201010243834 CN 201010243834 A CN201010243834 A CN 201010243834A CN 101929167 A CN101929167 A CN 101929167A
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- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 16
- 230000006854 communication Effects 0.000 claims description 5
- 206010003084 Areflexia Diseases 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
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Abstract
The invention discloses an ultrasonic side-hole detection method for detecting pile length. The acoustic impedance of a pile body material is greatly different from that of a soil body medium, and in the ultrasonic wave transmitting process, the ultrasonic waves can be reflected at the interface where the impedance changes suddenly, namely a pile-soil interface. When the method is used for measuring the pile length, coring is not needed, a duct is not needed to be pre-embedded in the pile, and the method is suitable for concrete piles with different lengths and diameters, and has the advantages of lower detection cost and high reliability.
Description
Technical field
The present invention relates to the detection technique field, relate in particular to the long method of stake that a kind of ultrasonic side-hole method is measured stakes such as concrete pile (comprising castinplace pile and preformed pile) and piling bar.
Background technology
It is long to measure stake when the practice of construction length of check stake and existing building thing pile foundation buried depth, and existing method of testing mainly contains pre-pipe laying supercritical ultrasonics technology in low strain transmitted wave method, bore extracting core process, the stake.It is long that low strain reflected can only be used to estimate the stake of stub, all can't accurately measure its length for broken pile and long stake, and reliability is lower; Bore extracting core process is only applicable to large-section in-situ concrete pile, gets in the core process that drill bit departs from pile body easily and can't accurately to measure stake long and cost is higher; Pre-pipe laying supercritical ultrasonics technology need be buried conduit underground in advance in the stake in stake, be only applicable to and castinplace pile, and conduit stops up easily in work progress.Therefore there is big defective in the long detection method of existing stake on the degree of accuracy and applicability.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of ultrasonic side-hole detection to detect the method for pile length.
The objective of the invention is to be achieved through the following technical solutions: a kind of ultrasonic side-hole detection detects the method for pile length, this method is specially: at first hole in stake side soil layer, bore diameter 100～200mm, distance stake side is 0.8～1.0m, and drilling depth is greater than estimating the long 3.0～5.0m of stake.Ultrasonic probe places foot of hole and begins to launch ultrasonic signal, then ultrasonic probe is risen gradually, when ultrasonic probe ultrasonic waves transmitted signal in communication process, can reflect at the interface of stake and soil when running into the bigger concrete pile of impedance, therefore can reflect at the long wide-ultra acoustic signals of stake, then basic areflexia signal outside the long scope of stake, at the bottom of can judging accurately according to the difference of reflected signal when ultrasonic probe arrives, thereby detect the length of pile body.
The invention has the beneficial effects as follows: the method that ultrasonic side-hole detection of the present invention detects pile length is to utilize the acoustic impedance of pile shaft material and soil body medium to differ greatly, ultrasonic wave is that a stake Tu Jiaojiemianchu can reflect at the interface that impedance is undergone mutation in communication process; This method without boring and coring, also not be used in an interior pre-buried conduit when the measurement stake is long, be applicable to the long and stake concrete pile directly of piles with different, and it is lower to detect cost, the reliability height.
Description of drawings
Fig. 1 is the present invention's long schematic diagram of ultrasonic side-hole detection side stake, and wherein (a) is structure drawing of device, (b) is ultrasonic signal figure;
Among the figure, pile body 1, ultrasonic probe 2, signal acquiring system and treatment system 3.
The specific embodiment
Operating principle of the present invention: concrete impedance is greater than the impedance of the soil body, according to the ultrasonic reflections principle, when popping one's head in the ultrasonic waves transmitted signal in communication process, can reflect at the interface of stake and soil when running into the bigger concrete pile of impedance, therefore can reflect at the long wide-ultra acoustic signals of stake, then basic areflexia signal outside the long scope of stake, can judge accurately according to the difference of reflected signal when probe arrives at the bottom of.Certainty of measurement depends on the directionality of ultrasonic signal, and in general precision can reach 100～200mm, is enough to engineering demands.
As shown in Figure 1, the present invention measures the long method of stake with planting with the ultrasonic side-hole method, be specially: at first in stake side soil layer, hole, bore diameter 100～200mm, distance stake side is 0.8～1.0m, drilling depth is greater than estimating the long 3.0～5.0m of stake, ultrasonic probe 2 places foot of hole and begins to launch ultrasonic signal, then ultrasonic probe is risen gradually, when ultrasonic probe 2 ultrasonic waves transmitted signals in communication process, can reflect at the interface of stake and soil when running into the bigger concrete pile of impedance, therefore can reflect at the long wide-ultra acoustic signals of stake, then basic areflexia signal outside the long scope of stake, can judge accurately according to the difference of reflected signal when ultrasonic probe 2 arrives at the bottom of, thereby detect the length of pile body 1.
Claims (1)
1. a ultrasonic side-hole detection detects the method for pile length, it is characterized in that this method is specially: at first in stake side soil layer, hole, and bore diameter 100～200mm, a distance stake side is 0.8～1.0m, drilling depth is greater than estimating the long 3.0～5.0m of stake.Ultrasonic probe places foot of hole and begins to launch ultrasonic signal, then ultrasonic probe is risen gradually, when ultrasonic probe ultrasonic waves transmitted signal in communication process, can reflect at the interface of stake and soil when running into the bigger concrete pile of impedance, therefore can reflect at the long wide-ultra acoustic signals of stake, then basic areflexia signal outside the long scope of stake, at the bottom of can judging accurately according to the difference of reflected signal when ultrasonic probe arrives, thereby detect the length of pile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010243834 CN101929167A (en) | 2010-08-03 | 2010-08-03 | Ultrasonic side-hole detection method for detecting pile length |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010243834 CN101929167A (en) | 2010-08-03 | 2010-08-03 | Ultrasonic side-hole detection method for detecting pile length |
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| CN101929167A true CN101929167A (en) | 2010-12-29 |
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| CN 201010243834 Pending CN101929167A (en) | 2010-08-03 | 2010-08-03 | Ultrasonic side-hole detection method for detecting pile length |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306318A (en) * | 2013-06-20 | 2013-09-18 | 三峡大学 | Panoramic ultrasonic side wall detector |
| CN104514488A (en) * | 2014-12-19 | 2015-04-15 | 广州建设工程质量安全检测中心有限公司 | Complete device and method for detecting drilling core of large-diameter bored pile under existing building |
| CN104652501A (en) * | 2015-02-11 | 2015-05-27 | 交通运输部公路科学研究所 | Pile foundation quality detection device and pile foundation quality detection method of shock excitation in pile side prospect hole |
| CN105040750A (en) * | 2015-07-31 | 2015-11-11 | 河海大学 | Pile foundation length testing method based on thermal response |
| CN105275005A (en) * | 2015-10-16 | 2016-01-27 | 浙江工业大学 | Method for detecting pile foundation post-grouting quality by using electrical method well logging system |
| CN105297787A (en) * | 2015-10-16 | 2016-02-03 | 浙江工业大学 | Method for detecting pile foundation post grouting quality by applying ultrasonic CT technology |
| CN105301111A (en) * | 2015-11-10 | 2016-02-03 | 国网浙江慈溪市供电公司 | Detection system |
| CN105606712A (en) * | 2015-11-10 | 2016-05-25 | 国网浙江慈溪市供电公司 | Ultrasonic detection probe, detection method, and detection system |
| CN106289123A (en) * | 2016-10-14 | 2017-01-04 | 国网浙江省电力公司岱山县供电公司 | A kind of cement electric pole buried depth automatic detection device |
| CN106770643A (en) * | 2017-03-16 | 2017-05-31 | 浙江大学 | The method that bottom-enlarging filling pile pile grouting effect is detected based on Acoustic Wave Propagation principle |
| CN111156936A (en) * | 2020-01-09 | 2020-05-15 | 昆山市建设工程质量检测中心 | Method for measuring insertion length of steel bar in sleeve based on dry coupling ultrasonic detection technology |
| CN113514554A (en) * | 2021-05-26 | 2021-10-19 | 广东交科检测有限公司 | Nondestructive foundation pile detection method based on outer cross hole of pile |
| CN113835122A (en) * | 2021-09-30 | 2021-12-24 | 中铁二十四局集团有限公司 | Method for determining pile side position by using pile side hole reflection wave method |
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2010
- 2010-08-03 CN CN 201010243834 patent/CN101929167A/en active Pending
Patent Citations (4)
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| JPH0988110A (en) * | 1995-09-21 | 1997-03-31 | Mitsubishi Heavy Ind Ltd | Method of diagnosing defect of foundation pile |
| CN101004431A (en) * | 2006-12-30 | 2007-07-25 | 杭州华东工程检测技术有限公司 | Method for measuring length of pile by using method of single hole resistivity or contrast resistivity |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100209A (en) * | 2013-06-20 | 2017-08-29 | 三峡大学 | A kind of panoramic ultrasonic side wall detector |
| CN103306318A (en) * | 2013-06-20 | 2013-09-18 | 三峡大学 | Panoramic ultrasonic side wall detector |
| CN107100209B (en) * | 2013-06-20 | 2018-01-12 | 三峡大学 | A kind of panoramic ultrasonic side wall detector |
| CN104514488A (en) * | 2014-12-19 | 2015-04-15 | 广州建设工程质量安全检测中心有限公司 | Complete device and method for detecting drilling core of large-diameter bored pile under existing building |
| CN104652501A (en) * | 2015-02-11 | 2015-05-27 | 交通运输部公路科学研究所 | Pile foundation quality detection device and pile foundation quality detection method of shock excitation in pile side prospect hole |
| CN105040750A (en) * | 2015-07-31 | 2015-11-11 | 河海大学 | Pile foundation length testing method based on thermal response |
| CN105275005A (en) * | 2015-10-16 | 2016-01-27 | 浙江工业大学 | Method for detecting pile foundation post-grouting quality by using electrical method well logging system |
| CN105297787A (en) * | 2015-10-16 | 2016-02-03 | 浙江工业大学 | Method for detecting pile foundation post grouting quality by applying ultrasonic CT technology |
| CN105301111A (en) * | 2015-11-10 | 2016-02-03 | 国网浙江慈溪市供电公司 | Detection system |
| CN105606712A (en) * | 2015-11-10 | 2016-05-25 | 国网浙江慈溪市供电公司 | Ultrasonic detection probe, detection method, and detection system |
| CN106289123A (en) * | 2016-10-14 | 2017-01-04 | 国网浙江省电力公司岱山县供电公司 | A kind of cement electric pole buried depth automatic detection device |
| CN106770643A (en) * | 2017-03-16 | 2017-05-31 | 浙江大学 | The method that bottom-enlarging filling pile pile grouting effect is detected based on Acoustic Wave Propagation principle |
| CN106770643B (en) * | 2017-03-16 | 2020-03-24 | 浙江大学 | Method for detecting pile bottom grouting effect of expanded-bottom cast-in-place pile based on sound wave propagation principle |
| CN111156936A (en) * | 2020-01-09 | 2020-05-15 | 昆山市建设工程质量检测中心 | Method for measuring insertion length of steel bar in sleeve based on dry coupling ultrasonic detection technology |
| CN111156936B (en) * | 2020-01-09 | 2020-07-31 | 昆山市建设工程质量检测中心 | Method for measuring insertion length of steel bar in sleeve based on dry coupling ultrasonic detection technology |
| CN113514554A (en) * | 2021-05-26 | 2021-10-19 | 广东交科检测有限公司 | Nondestructive foundation pile detection method based on outer cross hole of pile |
| CN113514554B (en) * | 2021-05-26 | 2023-10-24 | 广东交科检测有限公司 | Nondestructive foundation pile detection method based on pile outer cross hole |
| CN113835122A (en) * | 2021-09-30 | 2021-12-24 | 中铁二十四局集团有限公司 | Method for determining pile side position by using pile side hole reflection wave method |
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Open date: 20101229 |