CN104652501B - The reflection wave method device and method of exciting in the inspecting hole of stake side - Google Patents
The reflection wave method device and method of exciting in the inspecting hole of stake side Download PDFInfo
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- CN104652501B CN104652501B CN201510072408.4A CN201510072408A CN104652501B CN 104652501 B CN104652501 B CN 104652501B CN 201510072408 A CN201510072408 A CN 201510072408A CN 104652501 B CN104652501 B CN 104652501B
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- exciting
- pile foundation
- conduit
- acceleration transducer
- pile
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Abstract
The present invention relates to pile foundation detection field, particularly to the reflection wave method device of exciting in a kind of side inspecting hole, including acceleration transducer, conduit, described acceleration transducer is arranged on the sidewall at pile foundation top, conduit is arranged in the soil around pile of pile foundation side and parallel with pile foundation, conduit bottom end closure, top end opening, conduit is provided with exciting source moving up and down, acceleration transducer receives pile body reaction signal during exciting source position exciting in the catheter, the positional information of processing unit collection exciting source and the output information of acceleration transducer process obtain pile foundation quality information, additionally relate to the detection method of this device.By arranging boring at pile foundation side, and exciting source is arranged in the borehole, the acceleration transducer arranged by pile body side again receives pile body reaction signal, the position of boring and acceleration transducer is no longer limited by stake roof construction thing, can detect for the pile foundation in construction or in-service pile foundation.
Description
Technical field
The present invention relates to pile foundation detection field, particularly to the stake of exciting in a kind of side inspecting hole
Substrate amount detecting device and method.
Background technology
Pile foundation is will to have certain rigidity and intensity in incoming for superstructure load Rock soil Foundation
Power transmission rod member, compared with other base forms, have that bearing capacity is high, it is little to deform, materials save,
Mechanization of building operation degree high, goes for all kinds of geological conditions and various types of engineering
Building, therefore its application in all types of industries with civil building engineering is widely, and becomes
The overriding concern base form of engineers.
As the pile foundation of carrying superstructure load, the safety of whole engineering structure is played to closing weight
The effect wanted, its construction quality is to ensure that the key factor of engineering structure safety.Owing to pile foundation belongs to
Buried underground concealed engineering in ground, it is impossible to use simply and intuitively method to its quality shape
Condition detects.Current existing detection means such as static load test loads on stake top because of needs, has
Cost is high, expend the features such as time length；And obtain the low strain reflected wave method of wide use, logical
Crossing stake top exciting, utilization is that the reflection wave signal being reflected back stake top at the bottom of stake top reaches again is carried out
Detection is analyzed, and is difficult to shallow defects or the least defect, when foundation pile draw ratio is excessive, stake
When side soil modulus of shearing is higher, it is impossible to obtain obvious pile bottom reflection signal, exist more than stake top
During works, in addition to the exciting difficulty of stake top, the interference letter of pile bottom reflection and the above works in stake top
Number it is overlapped mutually, it is more difficult to identify pile bottom reflection signal.
Additionally, existing detection method such as low strain reflected wave method, sound wave transmission method, Large strain method
With static test mainly for the pile foundation of construction time stake top above non-structure thing, for military service work
The pile foundation of journey structure, the pile foundation of the works such as the bridge runed as being on active service, harbour, Fang Jian, due to
Stake top is above exists works, and its quality can not directly be detected by conventional detection method.
Summary of the invention
The primary and foremost purpose of the present invention is to provide the reflection wave method of exciting in a kind of side inspecting hole
Device, it is possible to reliably the pile foundation quality of construction time and the phase of military service is detected.
For realizing object above, the technical solution used in the present invention is: exciting in the inspecting hole of a kind of stake side
Reflection wave method device, including acceleration transducer, conduit, described acceleration transducer
Being arranged on the sidewall at pile foundation top, conduit is arranged in the soil around pile of pile foundation side and puts down with pile foundation
OK, conduit bottom end closure, top end opening, conduit is provided with exciting source moving up and down, adds
Velocity sensor receives pile body reaction signal during exciting source position exciting in the catheter, processes
The positional information of unit collection exciting source and the output information of acceleration transducer process obtain
Pile foundation quality information.
Compared with prior art, there is techniques below effect in the present invention: by arranging at pile foundation side
Boring, and exciting source is arranged in the borehole, then the acceleration transducer arranged by pile body side connects
Receiving pile body reaction signal, the position of boring and acceleration transducer is no longer limited by stake roof construction thing
System, can detect for the pile foundation in construction or in-service pile foundation.
Further object is that the pile foundation quality inspection that exciting in a kind of side inspecting hole is provided
Survey method, it is possible to reliably the pile foundation quality of construction time and the phase of military service is detected.
For realizing object above, the technical solution used in the present invention is: exciting in the inspecting hole of a kind of stake side
Pile foundation quality detection method, comprise the steps: that (A) is drilled with in the soil around pile of pile foundation side
Hole, hole is parallel with pile foundation, is disposed with the conduit of bottom end closure, top end opening in hole；
(B) being placed in the catheter by exciting source, acceleration transducer is arranged on the sidewall at pile foundation top；
(C) being transferred by certain spacing from top to bottom along conduit from the mouth of pipe by exciting source, (D) often transfers
Position at one, exciting source starts exciting, and acceleration transducer receives pile body reaction signal simultaneously；
(E) processing unit gathers the output information of the positional information of exciting source and acceleration transducer also
Process obtains pile foundation quality information.
Compared with prior art, there is techniques below effect in the present invention: by arranging at pile foundation side
Boring, and exciting source is arranged in the borehole, then the acceleration transducer arranged by pile body side connects
Receiving pile body reaction signal, the position of boring and acceleration transducer is no longer limited by stake roof construction thing
System, can detect for the pile foundation in construction or in-service pile foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is that the present invention is to degree of depth oscillogram m-during intact pile measurement；
Fig. 3 is that the present invention is to degree of depth oscillogram m-during defective pile measurement.
Detailed description of the invention
Below in conjunction with Fig. 1 to Fig. 3, the present invention is described in further detail.
Refering to Fig. 1, the reflection wave method device of exciting in a kind of side inspecting hole, including acceleration
Sensor 10, conduit 20, described acceleration transducer 10 is arranged in the side at pile foundation 70 top
On wall, conduit 20 is arranged in the soil around pile of pile foundation 70 side and parallel with pile foundation 70, conduit
20 bottom end closure, top end opening, be provided with exciting source 30 moving up and down, add in conduit 20
Velocity sensor 10 receives the exciting source 30 pile body reaction in conduit 20 during the exciting of position
Signal, processing unit 40 gathers the positional information of exciting source 30 and acceleration transducer 10
Output information process obtain pile foundation 70 quality information.By being arranged in the exciting source in conduit 20
30 send vibration, are received via degree sensor 10 accelerated after soil around pile, pile body conduction, add
Velocity sensor 10 exports to processing unit 40 after vibration information is converted into the signal of telecommunication.Here,
No matter the top of pile foundation 70 is with or without works, and the layout of acceleration transducer 10 and conduit 20 is all
Unaffected, therefore, this detection device can detect the pile foundation 70 of construction time also can detect military service
The pile foundation 70 of phase, the suitability is the widest.When actual test, in order to avoid exciting source as far as possible
30 vibrations sent have been lost in conduit 20 or exciting source 30 rock in conduit 20 from
And have influence on the accuracy of test result, can be provided with between exciting source 30 and conduit 20 here
Guide and limit unit, guide and limit unit ensures that exciting source 30 can only be along the above-below direction of conduit 20
Mobile.
Preferably, in order to ensure that acceleration transducer 10 is able to detect that the vibration letter of sufficient intensity
Number, the distance between conduit 20 and pile foundation 70 should be the nearest more good, therefore, in the present embodiment,
Being drilled with hole in the soil around pile of described pile foundation 70 side, hole is less than or equal to the distance of pile foundation 70
2 meters, certainly, distance too closely influences whether again pile foundation 70 itself, unsuitable excessive arranging when
Near pile foundation 70.It addition, for the quality intactly testing whole pile foundation 70, exciting source 30 should
When transferring to the deepest position, in the present embodiment, bottom hole, the degree of depth is more than pile foundation 70 end
Portion's degree of depth at least 3 meters, conduit 20 is arranged in hole.
Specifically, in order to, quickly determine easily the quality of pile foundation 70, as far as possible at minimizing
The treating capacity of reason unit 40, described processing unit 40 is according to exciting in the present embodiment preferably
The m-degree of depth oscillogram when information of the positional information in source 30, acceleration transducer 10 output generates,
Further according to time m-degree of depth oscillogram on Mintrop wave slope-inversion point or the position that significantly changes of wave amplitude obtain
Pile foundation quality information.
As the preferred version of the present invention, described conduit 20 top side is provided with tripod 50,
Constant depth enumerator 60 on tripod 50, the wire that exciting source 30 is connected with processing unit 40
Walk around the pulley on depth counter 60 and realize depth counter 60 to exciting source 30 positional information
Collection, exciting source 30 positional information that collects is exported to processing unit by depth counter 60
40.Tripod 50 is for constant depth enumerator 60, when being transferred by exciting source 30, exciting source
30 wires being connected with processing unit 40 can drive pulley rotation, and depth counter 60 is according to pulley
The rotation number of turns obtain the distance that exciting source 30 is transferred.
During detection, acceleration transducer 10 needs to gather exciting source 30 respectively at not coordination
Put vibrational feedback signal during vibration, realize exciting source by tripod 50 and depth counter 60
30 transfer and positional information collection.Owing to during transferring, exciting source 30 need not exciting,
And be parked in each position and just need exciting, operate for convenience, processing unit 40 described here
Send control instruction and control exciting source 30 exciting or stopping.So, often transfer to a position,
Exciting source 30 is started working, and stops after a period of operation, then proceedes to transfer to next
Individual position, the most repeatedly, until the bottom of conduit 20, a complete measurement process is just calculated
Terminate.
Preferably, described conduit 20 is pvc pipe.Pvc pipe low cost, good waterproof performance, and not
Exciting source 30 can be impacted.
According to said apparatus, present invention also offers the pile foundation quality inspection of exciting in a kind of side inspecting hole
Survey method, comprises the steps: that (A) is drilled with hole in the soil around pile of pile foundation 70 side,
Hole is parallel with pile foundation 70, is disposed with the conduit 20 of bottom end closure, top end opening in hole；(B)
Being placed in conduit 20 by exciting source 30, acceleration transducer 10 is arranged in pile foundation 70 top
On sidewall；(C) exciting source 30 is transferred by certain spacing along conduit 20 from top to bottom from the mouth of pipe,
(D) often transferring to position at, exciting source 30 starts exciting, acceleration transducer 10 simultaneously
Receive pile body reaction signal；(E) processing unit 40 gathers the positional information of exciting source 30 and adds
Output information the process of velocity sensor 10 obtain pile foundation quality information.In described step A,
Hole is less than or equal to 2 meters with the distance of pile foundation 70, and bottom hole, the degree of depth is deep more than bottom pile foundation 70
Spend at least 3 meters；In described step D, processing unit 40 sends control instruction and controls exciting source
30 excitings or stopping.Method depends on the device hereinbefore addressed, and has said in device part
Bright is enough detailed, the most just repeats no more.
As the preferred version of the present invention, described step E processes as follows and obtains pile foundation 70
Quality information: (E1) processing unit 40 is according to the positional information of exciting source 30, acceleration sensing
The m-degree of depth oscillogram when information of device 10 output generates；(E2) when determining in m-degree of depth oscillogram
Mintrop wave slope-inversion point or wave amplitude significantly change at position；(E3) big according to each flex point or wave amplitude
The position of amplitude variation determines pile foundation 70 mass.
Refering to Fig. 2, Fig. 3, this be measure for two different pile foundations 70 obtain time m-deeply
Degree oscillogram, in figure, measuring once every 0.5 meter of employing, the distance the most every time transferred is 0.5
Rice, each curve represents exciting source 30 at some position exciting brief acceleration sensor 10
The vibration information collected, acquires the data at deep 2 meters to 35 meters of underground altogether.
In fig. 2, its Mintrop wave slope is formed by two sections, exists the most first at the degree of depth 23 meters
Ripple slope-inversion point, remaining position has no obvious Mintrop wave slope-inversion point, and the wave amplitude of its no abnormality seen has
Significantly change, it can be determined that these 23 meters of positions are position at the bottom of stake, and this pile foundation 70 mass is complete.
In figure 3, Mintrop wave slope is formed by three sections, exists respectively at the degree of depth 15 meters and 23 meters
Significantly Mintrop wave slope-inversion point, remaining position has no obvious Mintrop wave slope-inversion point, and no abnormality seen
Wave amplitude significantly change, can determine whether to exist at 15 meters pile defect, and at 23 meters at the bottom of stake position.
Claims (9)
1. the reflection wave method device of exciting in a stake side inspecting hole, it is characterized in that: include acceleration transducer (10), conduit (20), described acceleration transducer (10) is arranged on the sidewall at pile foundation (70) top, conduit (20) is arranged in the soil around pile of pile foundation (70) side and parallel with pile foundation (70), conduit (20) bottom end closure, top end opening, conduit (20) is provided with exciting source moving up and down (30), acceleration transducer (10) receives the exciting source (30) pile body reaction signal in conduit (20) during the exciting of position, the positional information of processing unit (40) collection exciting source (30) and the output information of acceleration transducer (10) process obtain pile foundation (70) quality information.
The reflection wave method device of exciting in the most as claimed in claim 1 side inspecting hole, it is characterized in that: the soil around pile of described pile foundation (70) side is drilled with hole, hole is less than or equal to 2 meters with the distance of pile foundation (70), bottom hole, the degree of depth is more than pile foundation (70) the bottom degree of depth at least 3 meters, and conduit (20) is arranged in hole.
The reflection wave method device of exciting in the most as claimed in claim 1 side inspecting hole, it is characterized in that: m-degree of depth oscillogram when described processing unit (40) generates according to the information that the positional information of exciting source (30), acceleration transducer (10) export, further according to time m-degree of depth oscillogram on Mintrop wave slope-inversion point or the position that significantly changes of wave amplitude obtain pile foundation quality information.
The reflection wave method device of exciting in the most as claimed in claim 1 side inspecting hole, it is characterized in that: described conduit (20) top side is provided with tripod (50), the upper constant depth enumerator (60) of tripod (50), the wire that exciting source (30) is connected with processing unit (40) is walked around the pulley on depth counter (60) and is realized the depth counter (60) collection to exciting source (30) positional information, exciting source (30) positional information collected is exported to processing unit (40) by depth counter (60).
The reflection wave method device of exciting in the most as claimed in claim 1 side inspecting hole, it is characterised in that: described processing unit (40) sends control instruction and controls exciting source (30) exciting or stopping.
The reflection wave method device of exciting in the most as claimed in claim 1 side inspecting hole, it is characterised in that: described conduit (20) is pvc pipe.
7. a pile foundation quality detection method for exciting in the inspecting hole of stake side, comprises the steps:
(A) being drilled with hole in the soil around pile of pile foundation (70) side, hole is parallel with pile foundation (70), is disposed with the conduit (20) of bottom end closure, top end opening in hole；
(B) being placed in conduit (20) by exciting source (30), acceleration transducer (10) is arranged on the sidewall at pile foundation (70) top；
(C) exciting source (30) is transferred by certain spacing along conduit (20) from top to bottom from the mouth of pipe；
(D) often transferring to position at, exciting source (30) starts exciting, and acceleration transducer (10) receives pile body reaction signal simultaneously；
(E) processing unit (40) gather exciting source (30) positional information and the output information of acceleration transducer (10) and process obtain pile foundation quality information.
The pile foundation quality detection method of exciting in the most as claimed in claim 7 side inspecting hole, it is characterized in that: in described step A, hole is less than or equal to 2 meters with the distance of pile foundation (70), and bottom hole, the degree of depth is more than pile foundation (70) the bottom degree of depth at least 3 meters；In described step D, processing unit (40) sends control instruction and controls exciting source (30) exciting or stopping.
The pile foundation quality detection method of exciting in the most as claimed in claim 7 side inspecting hole, it is characterised in that: described step E processes as follows and obtains pile foundation (70) quality information:
(E1) m-degree of depth oscillogram when processing unit (40) generates according to the information that the positional information of exciting source (30), acceleration transducer (10) export；
(E2) the Mintrop wave slope-inversion point in m-degree of depth oscillogram or the position at wave amplitude significantly change when determining；
(E3) position significantly changed according to each flex point or wave amplitude determines pile foundation (70) quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072408.4A CN104652501B (en) | 2015-02-11 | 2015-02-11 | The reflection wave method device and method of exciting in the inspecting hole of stake side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072408.4A CN104652501B (en) | 2015-02-11 | 2015-02-11 | The reflection wave method device and method of exciting in the inspecting hole of stake side |
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| Publication Number | Publication Date |
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| CN104652501A CN104652501A (en) | 2015-05-27 |
| CN104652501B true CN104652501B (en) | 2016-11-16 |
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| CN201510072408.4A Expired - Fee Related CN104652501B (en) | 2015-02-11 | 2015-02-11 | The reflection wave method device and method of exciting in the inspecting hole of stake side |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971031A (en) * | 2016-06-22 | 2016-09-28 | 昆山市建设工程质量检测中心 | Magnetic-induction-based pile length detection device for tubular pile construction and detection method |
| CN107190790B (en) * | 2017-07-12 | 2023-10-03 | 中交二航局第四工程有限公司 | Bored pile head concrete quality detection device and detection method |
| CN108442419B (en) * | 2018-03-25 | 2019-09-06 | 中投德创建工有限公司 | Building foundation detection device and detection method |
| CN108625409B (en) * | 2018-04-05 | 2020-02-21 | 广州市啄木鸟工程咨询有限公司 | Civil engineering building foundation pile detection and evaluation system and method |
| CN108487336B (en) * | 2018-04-21 | 2019-12-10 | 铁四院(湖北)工程监理咨询有限公司 | Geotechnical engineering pile foundation quality detection method |
| CN108487337B (en) * | 2018-04-21 | 2019-12-10 | 江苏省中成建设工程总公司 | Geotechnical engineering pile foundation quality detection system |
| CN108560617B (en) * | 2018-05-05 | 2020-10-30 | 浙江意诚检测有限公司 | Pile body defect detection method |
| CN108627231A (en) * | 2018-05-16 | 2018-10-09 | 五冶集团上海有限公司 | A kind of pile foundation method for detecting vibration |
| CN108956766B (en) * | 2018-06-09 | 2021-07-16 | 广东穗芳智慧建设科技有限公司 | Pile foundation quality detection method |
| CN112726685B (en) * | 2020-12-25 | 2022-04-22 | 华南理工大学 | Existing structure system pile foundation bearing capacity detection and durability evaluation method |
| 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2386031A1 (en) * | 1977-03-31 | 1978-10-27 | Nadal Aime | Subterranean structure shape and size determination - uses monitoring from adjacent bore hole, shock waves being propagated in structure |
| JPH0988110A (en) * | 1995-09-21 | 1997-03-31 | Mitsubishi Heavy Ind Ltd | Method of diagnosing defect of foundation pile |
| JPH09196897A (en) * | 1996-01-22 | 1997-07-31 | Mitsubishi Heavy Ind Ltd | Diagnosis method for soundness of underground construction |
| CN1712644A (en) * | 2004-06-21 | 2005-12-28 | 美胜C&S检查株式会社 | Apparatus for inspecting concrete construction, e.g. piles |
| CN101570974A (en) * | 2009-03-26 | 2009-11-04 | 浙江省建筑科学设计研究院有限公司 | Method for detecting quality of existing building foundation piles with parallel seismic method |
| CN101614022A (en) * | 2009-07-14 | 2009-12-30 | 邓业灿 | Tomography-based method for detecting foundation piles of building by elastics waves |
| CN101929167A (en) * | 2010-08-03 | 2010-12-29 | 浙江大学 | Ultrasonic side-hole detection method for detecting pile length |
| CN202031113U (en) * | 2011-04-23 | 2011-11-09 | 金文洪 | Five-dimensional digital detection system for cast-in-place pile hole |
| CN204703198U (en) * | 2015-02-11 | 2015-10-14 | 交通运输部公路科学研究所 | The reflection wave method device of exciting in the inspecting hole of stake side |
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