CN104631517B - Cast-in-situ bored pile concrete interface monitoring device and method - Google Patents

Cast-in-situ bored pile concrete interface monitoring device and method Download PDF

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Publication number
CN104631517B
CN104631517B CN201410833047.6A CN201410833047A CN104631517B CN 104631517 B CN104631517 B CN 104631517B CN 201410833047 A CN201410833047 A CN 201410833047A CN 104631517 B CN104631517 B CN 104631517B
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China
Prior art keywords
concrete
electrode
cast
pile
resistance value
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CN201410833047.6A
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Chinese (zh)
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CN104631517A (en
Inventor
祝世平
刘鎏
何世达
陶凤娟
王伏春
刘春生
李晓珍
任勇华
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湖北中南勘察基础工程有限公司
武汉长盛工程检测技术开发有限公司
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Priority to CN201410833047.6A priority Critical patent/CN104631517B/en
Publication of CN104631517A publication Critical patent/CN104631517A/en
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Abstract

The present invention is by concrete during cast-in-situ bored pile underwater gliders, mud, the electrical impedance physical property measurement method of the media such as water and the test analysis of susceptiveness, under water electrical impedance test probe and underwater gliders absolute altitude location method of testing and the research of test instrunment, devise a kind of cast-in-situ bored pile concrete interface monitoring device, it includes ground host machine, probe electronics chamber, it is arranged on the push rod of probe electronics top of chamber, it is arranged on the insulating bar bottom probe electronics chamber, fixedly sleeved the first electrode on insulating bar and the second electrode, it is arranged on resistance measurement module and the analog-digital converter of probe electronics intracavity.The key technology principle of this device be fill orifice in filling process, the electrical impedance of water, the electrical impedance of mud and concrete has obvious difference, realizes the location of filling concrete interface (or degree of depth) by measuring this difference.

Description

Cast-in-situ bored pile concrete interface monitoring device and method
Technical field
The present invention relates to cast-in-situ bored pile underwater gliders skill in a kind of foundation construction engineering Art field, in particular to a kind of cast-in-situ bored pile concrete interface monitoring device and method.
Background technology
Flourish along with China's engineering construction cause, bored concrete pile foundation engineering is built at high level Build, in the heavy construction such as bridge, port and pier, offshore production platform and nuclear power station extensively Use, it has also become most important a kind of foundation engineering form in engineering construction.Bored concrete pile foundation work The increase of the widely used and stake degree of depth of journey, makes filling concrete amount increasingly increase, according to relevant money Material statistics, major part all engineerings below ± 0.00 in filling concrete use field, as The basis such as high-rise basis, underground chamber, subterranean tunnel, bridge, harbour, harbour work Journey, all uses underwater concrete to fill on the basis of bridge, harbour, harbour and skyscraper especially Note.In engineering reality, how to judge the interface of filling concrete, accurately determine filling concrete The degree of depth become important engineering problem in the urgent need to address.
Due to more than filling concrete face there is the mixture of mud thus concrete in cast The true absolute altitude in face is more difficult is properly positioned control, often uses estimation in conventional engineering construction Method, for ensure groundwater increment reliability, often result in the increase of filling concrete amount.? Being especially apparent in the work progress of Tall Building Foundation cast-in-situ bored pile, every pile generally requires many Perfusion 2~4m, on the one hand causes the serious waste of concrete resource, adds basis simultaneously and open The difficulty dug, on the other hand adds construction cost and the project construction cost of project, and brings How to bury and to process any excess concrete and abandon the problem of environmental pollution of block.If estimation deficiency, then Cause filling concrete interface inadequate, affect Quality of Foundation.
How underwater gliders controls concrete underwater perfusion interface well, reaches design The requirement at perfusion interface, does not the most also have corresponding monitoring method, does not has special monitoring yet Instrument and equipment, the method using estimation, accuracy extreme difference, waste is big or quality it cannot be guaranteed that; There is no special monitoring instrument or equipment the most yet.
Summary of the invention
Present invention aim to provide a kind of cast-in-situ bored pile concrete interface monitoring device And method, by these apparatus and method, can be in cast-in-situ bored pile underwater gliders engineering Effectively monitor and control concrete underwater perfusion interface, reaching engineering design perfusion interface Requirement.
Cast-in-situ bored pile concrete interface monitoring dress for realizing this purpose, designed by the present invention Put, it is characterised in that: it includes ground host machine, probe electronics chamber, is arranged on probe electronics chamber The push rod at top, it is arranged on the insulating bar bottom probe electronics chamber, fixedly sleeved on insulating bar The first electrode and the second electrode, the resistance measurement module being arranged on probe electronics intracavity and mould Number converter, at a distance of the spacing preset between described first electrode and the second electrode, described first The wire of electrode and the second electrode accesses resistance measurement after the wire guide of described insulating bar Two resistance value test sides of module, the signal output part of resistance measurement module connects described mould The signal input part of number converter, the signal output part of described analog-digital converter connects described ground Host signal input.
In technique scheme, described push rod is vertical with probe electronics chamber, described insulating bar and spy Head electronics chamber is vertical.
In technique scheme, the fixedly sleeved sidewall bottom insulating bar of described second electrode On.
In technique scheme, the spacing range between described first electrode and the second electrode is 10~30cm.
In technique scheme, described probe electronics intracavity is additionally provided with amplifier and wave filter, institute The signal output part stating resistance measurement module passes sequentially through amplifier and wave filter connection modulus The signal input part of transducer.
In technique scheme, the signal output part of described analog-digital converter is by test cable even Connect described ground host machine signal input part.
In technique scheme, the alarm signal output ends of described ground host machine is also associated with reporting to the police Device.
A kind of drill-pouring utilizing right above-mentioned cast-in-situ bored pile concrete interface monitoring device Pile concrete interface monitoring method, it is characterised in that it comprises the following steps:
Step 1: pour into concrete to be irrigated in Insulation test bucket, by described first electrode With in the concrete that the second electrode is immersed in Insulation test bucket, now resistance measurement module is passed through First electrode and the second electrode record the resistance value of concrete in described Insulation test bucket, and should Resistance value is transferred in ground host machine show, the resistance value conduct that now ground host machine shows Judge whether the concrete of bored concrete pile perfusion reaches the threshold resistance value of design perfusion target location;
Step 2: before bored concrete pile concrete perfusion, by described probe electronics chamber and described absolutely Edge rod is inserted in bored concrete pile by push rod, and by described first positioning of electrode on described insulating bar Design perfusion target location in the concrete of bored concrete pile perfusion;
Step 3: start to irrigate the described concrete in described step 1 in described bored concrete pile, Filling concrete face in described bored concrete pile constantly raises, now ground host machine described in real-time monitored The resistance value of display, the threshold resistance value reaching to determine in step 1 when real-time resistance value Time in the range of 95%~105%, stop concrete perfusion, the most described first electrode and described the Two electrodes are completely submerged in the concrete in described bored concrete pile, and the concrete of bored concrete pile perfusion reaches To perfusion target location.
In described step 3, when real-time resistance value reaches the threshold resistance value that determines in step 1 95%~105% in the range of time, reported to the police by alarm, make operator stop perfusion Concrete.
In described step 1, described Insulation test bucket is plastic testing bucket, described plastic testing bucket In pour into 30cm deep treat concrete perfusion.
The key technology of the present invention be fill orifice in filling process, water, the resistance of mud and mixed The resistance of solidifying soil has obvious difference, realizes filling concrete interface by measuring this difference The location of (or degree of depth).
The invention have the benefit that
(1) during foundation engineering cast-in-situ bored pile underwater gliders, this is used The bright concrete underwater perfusion position that can effectively be monitored and controlled, and reach design perfusion interface Requirement, it is to avoid causing the waste of concrete resource, the construction cost and the project that reduce project are built It is set as this, and efficiently solves any excess concrete and abandon the problem of environmental pollution of block.
(2) use the present invention that concrete can accurately be filled into the perfusion position of design, it is to avoid to make Filling concrete is become not reach design interface and affect Quality of Foundation.
(3) present invention is additionally provided with alarm, and the resistance value shown when ground host machine reaches threshold value In the range of the 95%~105% of resistance value, alarm device can send warning, can stop filling stake, behaviour Make simple and convenient, and in time, accurately.
(4) assembly of the invention is simple to operation, is convenient for carrying;And volume is little, do not affect whole Individual work progress;Can need according to the degree of depth of reality perfusion and regulate push rod length, range of application Extensively.
Accompanying drawing explanation
Fig. 1 is the use status architecture schematic diagram of the present invention;
Fig. 2 is the structural representation of the present invention.
1 ground host machine, 2 probe electronics chambeies, 2.1 resistance measurement modules, 2.2 put Big device, 2.3 analog-digital converters, 2.4 wave filter, 3 test cables, 4 push rods, 5 Bored concrete pile, 6 insulating bars, 7 first electrodes, 7.1 second electrodes, 8 alarms.
Detailed description of the invention
Below in conjunction with attached Fig. 1 and 2 and specific embodiment, the present invention is made the most specifically Bright:
Present invention is mainly used for skyscraper, bridge, port and pier, offshore oil platform, with And concrete interface in the filling process of the priming concrete pile hole in the infrastructure engineering such as nuclear power station Monitoring.
The present invention by concrete during cast-in-situ bored pile underwater gliders, mud, The electrical impedance physical property measurement method of the media such as water and the test analysis of susceptiveness, and electrical impedance under water Test probe and underwater gliders absolute altitude location method of testing and the research of test instrunment, Propose drill-pouring pile underwater concrete absolute altitude interface detection method and have developed drill-pouring Pile concrete interface monitoring device.The key technology principle of this device is that fill orifice is at filling process In, the electrical impedance of water, the electrical impedance of mud and concrete has obvious difference, by measuring This difference realizes the location of filling concrete interface (or degree of depth).
Cast-in-situ bored pile concrete interface monitoring device as illustrated in fig. 1 and 2, it includes ground Main frame 1, probe electronics chamber 2, it is arranged on the push rod 4 at top, probe electronics chamber 2, is arranged on Insulating bar 6 bottom probe electronics chamber 2, fixedly sleeved the first electrode 7 on insulating bar 6 The resistance measurement module 2.1 with the second electrode 7.1, being arranged in probe electronics chamber 2 and mould Number converter 2.3, at a distance of the spacing preset between described first electrode 7 and the second electrode 7.1, After the wire of described first electrode 7 and the second electrode 7.1 passes the wire guide of described insulating bar 6 Access two resistance value test sides of resistance measurement module 2.1, resistance measurement module 2.1 Signal output part connect described analog-digital converter 2.3 signal input part, described analog digital conversion The signal output part of device 2.3 connects described ground host machine 1 signal input part.
In technique scheme, described push rod 4 is vertical with probe electronics chamber 2, described insulating bar 6 is vertical with probe electronics chamber 2, and described push rod 4 is scalable push rod, can irrigate according to reality The degree of depth need and regulate described push rod 4 length, length range is 1~30 meter.
In technique scheme, described second electrode 7.1 is fixedly sleeved bottom insulating bar 6 On sidewall.
Spacing model in technique scheme, between described first electrode 7 and the second electrode 7.1 Enclosing is 10~30cm, can overcome the inhomogeneities of concrete, makes the most greatly accuracy of detection reduce, The least meeting makes detection data discrete relatively big, increases the accuracy judged.
In technique scheme, in described probe electronics chamber 2, it is additionally provided with amplifier 2.2 and filtering Device 2.4, the signal output part of described resistance measurement module 2.1 passes sequentially through amplifier 2.2 He The signal input part of wave filter 2.4 connection mode number converter 2.3.
In technique scheme, the signal output part of described analog-digital converter 2.3 is by test electricity Cable 3 connects described ground host machine 1 signal input part.
In technique scheme, the alarm signal output ends of described ground host machine 1 is also associated with report Alert device 8.
A kind of cast-in-situ bored pile utilizing above-mentioned cast-in-situ bored pile concrete interface monitoring device mixes Solidifying Soil Interface monitoring method, the method is come really by the resistance variations of medium in measurement priming concrete pile hole Determine interface or the depth location of concrete perfusion, according to coagulation during underwater gliders The electrical impedance physical property of the media such as soil, mud and the difference of sensitivity characteristic, use the two of monitoring probe The change of the electrical impedance of the medium such as concrete, mud during individual electrode monitoring filling concrete, When change reaches threshold value, ground host machine is just reported to the police, and now explanation concrete reaches default interface Position.
Concretely comprise the following steps:
Step 1: pour into concrete to be irrigated in Insulation test bucket, by described first electrode 7 and second electrode 7.1 be immersed in the concrete of Insulation test bucket, now resistance measurement mould Block 2.1 records concrete in described Insulation test bucket by the first electrode 7 and the second electrode 7.1 Resistance value, and be transferred to this resistance value in ground host machine 1 show, now ground master Whether the resistance value of machine 1 display reaches design perfusion as the concrete judging bored concrete pile 5 perfusion The threshold resistance value of target location;
Step 2: before bored concrete pile 5 concrete perfusion, by described probe electronics chamber 2 and institute State insulating bar 6 to be inserted in bored concrete pile 5 by push rod 4, and by described on described insulating bar 6 First electrode 7 is positioned the design perfusion target location of the concrete of bored concrete pile 5 perfusion;
Step 3: start to irrigate the described concrete in described step 1 in described bored concrete pile 5, (monitor value now should be the resistance value of mud, and it has certain difference with threshold resistance value) Filling concrete face in described bored concrete pile 5 constantly raises, now ground master described in real-time monitored The resistance value of machine 1 display, when real-time resistance value reaches the threshold resistance value that determines in step 1 95%~105% in the range of time, stop concrete perfusion, the most described first electrode 7 and institute Stating the second electrode 7.1 to be completely submerged in the concrete in described bored concrete pile 5, bored concrete pile 5 fills The concrete of note reaches to irrigate target location.
In described step 3, when real-time resistance value reaches the threshold resistance value that determines in step 1 95%~105% in the range of time, reported to the police by alarm, make operator stop perfusion Concrete.
In described step 1, described Insulation test bucket is plastic testing bucket, described plastic testing bucket In pour into 30cm deep treat concrete perfusion.Plastic testing bucket can reduce the resistance value of test bucket Interference to threshold resistance value, makes step 1 can obtain threshold resistance value accurately.
The content that this specification is not described in detail belongs to known to professional and technical personnel in the field Prior art.

Claims (9)

1. the cast-in-situ bored pile coagulation utilizing cast-in-situ bored pile concrete interface monitoring device Soil Interface monitoring method, described cast-in-situ bored pile concrete interface monitoring device includes ground host machine (1), probe electronics chamber (2), be arranged on probe electronics chamber (2) top push rod (4), It is arranged on the insulating bar (6), fixedly sleeved in insulating bar (6) of bottom, probe electronics chamber (2) On the first electrode (7) and the second electrode (7.1), be arranged in probe electronics chamber (2) Resistance measurement module (2.1) and analog-digital converter (2.3), described first electrode (7) and At a distance of the spacing preset between second electrode (7.1), described first electrode (7) and the second electricity Two resistance values that resistance measurement module (2.1) is accessed by wire respectively in pole (7.1) are examined Surveying end, the signal output part of resistance measurement module (2.1) connects described analog-digital converter (2.3) Signal input part, the signal output part of described analog-digital converter (2.3) connects described ground Main frame (1) signal input part;
It is characterized in that, cast-in-situ bored pile concrete interface monitoring method comprises the following steps:
Step 1: pour into concrete to be irrigated in Insulation test bucket, by described first electrode (7) and the second electrode (7.1) is immersed in the concrete of Insulation test bucket, now resistance value Measurement module (2.1) records described insulation by the first electrode (7) and the second electrode (7.1) The resistance value of concrete in test bucket, and be transferred to this resistance value in ground host machine (1) enter Row display, the resistance value that now ground host machine (1) shows is as judging bored concrete pile (5) perfusion Concrete whether reach design perfusion target location threshold resistance value;
Step 2: before bored concrete pile (5) concrete perfusion, by described probe electronics chamber (2) Inserted in bored concrete pile (5) by push rod (4) with described insulating bar (6), and by described absolutely Described first electrode (7) on edge rod (6) is positioned the concrete that bored concrete pile (5) irrigates Design perfusion target location;
Step 3: start to irrigate in the described bored concrete pile (5) in described step 1 is described mixed Solidifying soil, the filling concrete face in described bored concrete pile (5) constantly raises, now real-time monitored The resistance value that described ground host machine (1) shows, when real-time resistance value reaches true in step 1 Time in the range of the 95%~105% of fixed threshold resistance value, stop concrete perfusion, now described First electrode (7) and described second electrode (7.1) are completely submerged in described bored concrete pile (5) In interior concrete, the concrete that bored concrete pile (5) irrigates reaches to irrigate target location.
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its It is characterised by: described push rod (4) is vertical with probe electronics chamber (2), described insulating bar (6) Vertical with probe electronics chamber (2).
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its It is characterised by: the fixedly sleeved sidewall in insulating bar (6) bottom of described second electrode (7.1) On.
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its It is characterised by: the spacing range between described first electrode (7) and the second electrode (7.1) is 10~30cm.
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its It is characterised by: in described probe electronics chamber (2), be additionally provided with amplifier (2.2) and wave filter (2.4), The signal output part of described resistance measurement module (2.1) pass sequentially through amplifier (2.2) and The signal input part of wave filter (2.4) connection mode number converter (2.3).
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its It is characterised by: the signal output part of described analog-digital converter (2.3) passes through test cable (3) Connect described ground host machine (1) signal input part.
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its It is characterised by: the alarm signal output ends of described ground host machine (1) is also associated with alarm (8).
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its It is characterised by: in described step 3, when real-time resistance value reaches the threshold value that determines in step 1 Time in the range of the 95%~105% of resistance value, reported to the police by alarm, make operator stop Only concrete perfusion.
Cast-in-situ bored pile concrete interface monitoring method the most according to claim 1, its Being characterised by: in described step 1, described Insulation test bucket is plastic testing bucket, described plastics Test bucket in pour into 30cm deep treat concrete perfusion.
CN201410833047.6A 2014-12-26 2014-12-26 Cast-in-situ bored pile concrete interface monitoring device and method CN104631517B (en)

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CN104929164B (en) * 2015-06-19 2016-08-31 山东大学 A kind of cross concrete moment of torsion electronic probe device and operational approach thereof
CN105089083B8 (en) * 2015-07-16 2017-12-22 路桥华祥国际工程有限公司 Bored Pile of Bridge construction slurry leakage alarming device
KR101638619B1 (en) * 2015-12-03 2016-07-11 한국지질자원연구원 Grouting monitoring method used resistivity
CN105625485B (en) * 2016-02-05 2018-02-06 中铁城建集团第二工程有限公司 A kind of method of Accurate Determining snag filling concrete absolute altitude
CN106198641A (en) * 2016-08-30 2016-12-07 北京智博联科技股份有限公司 The probe of resistivity of media in measurement prefabricated concrete structure reinforced bar sleeve
CN106638719B (en) * 2016-10-20 2018-09-18 武汉长盛工程检测技术开发有限公司 Bored pile piling quality automatic monitoring controller and method
CN108121225B (en) * 2017-11-27 2019-09-06 中铁十二局集团有限公司 Concrete continuous beam cantilever casting control system and control method
CN109695261A (en) * 2018-12-20 2019-04-30 武汉长盛工程检测技术开发有限公司 Underwater gliders interface pressure difference monitoring device and method
CN111042231A (en) * 2020-01-10 2020-04-21 刘雪琴 Method for detecting in-hole concrete pouring elevation of underground bored pile

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CN85100680B (en) * 1985-04-01 1986-07-02 铁道部科学研究院铁道建筑研究所 Electronic method and apparatus for nondetructive determination of pavement thickness
JP3550893B2 (en) * 1996-07-17 2004-08-04 株式会社大林組 How to check the filling status of cast concrete
CN2781325Y (en) * 2005-03-25 2006-05-17 钟世航 Electric measuring thickness instrument for thin-layer concrete
JP4827239B2 (en) * 2006-01-17 2011-11-30 株式会社ケット科学研究所 Defect detection / filling degree measuring apparatus for concrete during placing and method for detecting and filling the defect
CN102269725B (en) * 2011-05-10 2012-10-31 交通运输部公路科学研究所 Device and method for testing concrete pouring uniformity and compactness

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