CN106124569A - A kind of for measuring the reinforced bar sleeve grouting probe of plumpness and method - Google Patents
A kind of for measuring the reinforced bar sleeve grouting probe of plumpness and method Download PDFInfo
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- CN106124569A CN106124569A CN201610780372.XA CN201610780372A CN106124569A CN 106124569 A CN106124569 A CN 106124569A CN 201610780372 A CN201610780372 A CN 201610780372A CN 106124569 A CN106124569 A CN 106124569A
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- rod member
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- conductor rod
- sleeve
- grouting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
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Abstract
The present invention relates to a kind of probe for measuring reinforced bar sleeve grouting plumpness and method.Described probe mainly includes the first electrode being made up of one end of the first conductor rod member and the second electrode being made up of one end of the second conductor rod member, and the second conductor rod member is hollow structure, and the second conductor rod member is enclosed within outside the first conductor rod member.Described method includes: inserted in sleeve by probe；Probe is connected with electric resistance measuring apparatus, and measures resistance value；In the different phase of grouting, determine grouting plumpness according to the resistivity tried to achieve and air and quicksand, damp sand, the degree of closeness of resistivity of dry sand.Present invention achieves not damaged plumpness to measure.The method of the invention has that measuring speed is fast, efficiency is high, precision is high, good stability, low cost and other advantages, provides a set of efficient detection scheme for the work of prefabricated concrete structure construction quality accident.
Description
Technical field
The present invention relates to the realm of building construction, be specifically related to a kind of prefabricated concrete structure reinforced bar sleeve of measuring and be in the milk full
The probe of full scale and method.
Background technology
Prefabricated concrete structure, refers to the coagulation being assembled by precast concrete by reliable connected mode
Soil structure, including assembled monolithic concrete structure, full assembling xoncrete structure etc..Because it has energy-saving and environmental protection, saves mould
Plate, it is possible to improve execution conditions, raise labour productivity, the advantage such as accelerating construction progress, at present in China one, city, two wires
The house construction engineering in city uses in a large number.In prefabricated concrete structure, the connection between component is an important step, and it connects
Quality directly affects structure shear resistance capacity and shock resistance.In " JGJ1-2014 prefabricated concrete structure technical regulation ",
Connect to propose to component and be distinctly claimed.And reinforced bar sleeve grouting connection is a kind of conventional connected mode, it is in the milk the fullest,
Directly determine component connection construction quality.
Self-assembly formula house, since China is applied, has studied the detection method of plumpness of being in the milk at present the most always,
To reach to control the purpose of construction quality.Straight screw sleeve connection structure is as it is shown in figure 1, include: component A, component B, sleeve, component
A reinforcing bar, component B reinforcing bar, injected hole, slurry outlet.Owing to straight screw sleeve connection structure having multilayer dielectricity alternately, gold as non-in metal
Belonging to medium alternately, and body is the thinnest at radial thickness, general only 5～6 millimeters, the most existing lossless detection method is almost
All cannot be carried out effectively detecting.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention proposes a kind of measurement prefabricated concrete structure steel
The probe of muscle sleeve grouting plumpness and method.
The measuring principle of the present invention is introduced before providing technical scheme.
When free electron does orientation steady shift in metallic conductor, effect hindered.Conductor is to electric current
Inhibition be referred to as resistance.Resistance English alphabet " R " (or " r ") represents (power taking resistance English " Resistance " first
Letter).When temperature one timing, conductor resistance is directly proportional with its length, with its cross-sectional area is inversely proportional to, is formulated
For:
Different medium has different resistivity.Patent of the present invention relates to the four kind media corresponding with grouting different phase,
It is air, fluid mortar (abbreviation quicksand) respectively, solidifies aqueous mortar (abbreviation damp sand), solidifies dry mortar (abbreviation dry sand).Often
Under temperature, the resistivity contrasts of several media is very big, is respectively as follows: ρAir=1 × 107Ω m, ρQuicksand=1 Ω m, ρDamp sand=1 × 103Ω
M, ρDry sand=1 × 105Ωm.The moisture content of fluid mortar is generally higher than 10%, its resistivity and resistivity of water approximately equal.This
In the resistivity value that is given be approximation, but owing to air is the biggest with the resistivity contrasts of other three kinds of media, although be near
Also the requirement judging grouting plumpness is fully met like value.
First measure interelectrode dielectric resistance in sleeve, the resistance of surrounding them medium is calculated according to formula above
Rate.Then in the different phase of grouting, according to the resistivity tried to achieve and air and quicksand, damp sand, resistivity close of dry sand
Degree determines grouting plumpness.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of method measuring reinforced bar sleeve grouting plumpness, comprises the following steps:
Step 1, inserts the electrode of probe in the sleeve of reinforced bar sleeve.
Step 2, is connected probe with electric resistance measuring apparatus outside reinforced bar sleeve, and measures the resistance value of medium in sleeve.
Step 3, seeks the resistivity of medium according to the resistance recorded.
Step 4, in the different phase of grouting, according to the resistivity tried to achieve and air and quicksand, damp sand, the resistivity of dry sand
Degree of closeness determine grouting plumpness.
Further, described probe includes 2 electrodes.
Further, the computing formula of resistivity is:
Wherein, R is the resistance recorded；ρ is the resistivity of medium；L is the distance between 2 electrodes；S is each electrode
Area.
Further, step 4 determines that the method for grouting plumpness is as follows:
Before mortar initial set, the medium in sleeve is air and quicksand, if the resistivity recorded is close to air resistivity, then overlaps
Cylinder grouting is the fullest；If the resistivity recorded is close to quicksand resistivity, then sleeve grouting is full.
After mortar initial set, mortar is in non-completely dried state, and the medium in sleeve is air and damp sand, if the electricity recorded
Resistance rate is close to air resistivity, then sleeve grouting is the fullest；If the resistivity recorded is close to damp sand resistivity, then sleeve grouting is full
Full.
After mortar is completely dried, the medium in sleeve is air and dry sand, if the resistivity recorded is close to air resistivity,
Then sleeve grouting is the fullest；If the resistivity recorded is close to dry sand resistivity, then sleeve grouting is full.
Preferably, air resistivity is 1 × 107Ω m, quicksand resistivity is 1 Ω m, and damp sand resistivity is 1 × 103Ω m, dry
Sand resistivity is 1 × 105Ωm。
Further, described electric resistance measuring apparatus is megger or megameter.
A kind of probe for measuring reinforced bar sleeve grouting plumpness, including the be made up of one end of the first conductor rod member
The second electrode that one electrode and the one end by the second conductor rod member are constituted.First conductor rod member and the shape phase of the second conductor rod member
With, the first conductor rod member is thinner than the second conductor rod member, longer than the second conductor rod member.Second conductor rod member is hollow structure, second
Conductor rod member is enclosed within outside the first conductor rod member, is respectively provided with 2 between the two ends of the second conductor rod member and the first conductor rod member
The individual electrode connector being made up of insulant, for fixing the first conductor rod member and the relative position of the second conductor rod member.The
The outer surface of two conductor rod members arranges insulation sleeve intimate contact therewith, and insulation sleeve makes surface area (second conductor of the second electrode
Rod member electrode tip is not by the surface area of insulation sleeve covering part) equal to surface area (the first conductor rod member electrode tip of the first electrode
And the surface area between this termination electrode union joint).
Further, one end of the first electrode arranges a plug.
Further, the first conductor rod member and the second conductor rod member are cylinder.
Further, the length of the first conductor rod member and the second conductor rod member is more than the degree of depth of slurry outlet.When measuring,
The electrode tip of the first conductor rod member and the second conductor rod member is positioned at sleeve, and the other end is positioned at outside slurry outlet, respectively with resistance
Measurement apparatus is connected.
Compared with prior art, the method have the advantages that
The present invention, by inserting in prefabricated concrete structure reinforced bar sleeve by the measurement electrode of probe, is situated between in measuring sleeve
Matter resistance, and obtain the resistivity of medium in sleeve according to the resistance recorded, in the different phase of grouting, according to the resistance tried to achieve
Rate and air and quicksand, damp sand, the degree of closeness of resistivity of dry sand determine grouting plumpness.Present invention achieves not damaged to satisfy
Full scale is measured.The method of the invention has that measuring speed is fast, efficiency is high, precision is high, good stability, low cost and other advantages, for
The work of prefabricated concrete structure construction quality accident provides a set of efficient detection scheme.
Accompanying drawing explanation
Fig. 1 is the configuration figure measuring prefabricated concrete structure reinforced bar sleeve grouting plumpness；
Fig. 2 is the structural representation of probe of the present invention.
Shown in figure: 1-pops one's head in, 11-the first electrode, 12-the second electrode, 13-electrode connector, 14-insulation sleeve, 15-blocks up
Head, 2-the first component, 3-second component, 4-sleeve, 5-the first member reinforcing steel bar, 6-second component reinforcing bar, 7-injected hole, 8-pulp
Hole.
Detailed description of the invention
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
A kind of prefabricated concrete structure reinforced bar sleeve grouting plumpness measuring method, configuration figure is as it is shown in figure 1, described side
Method comprises the following steps:
Step 1, inserts the electrode of probe 1 in the sleeve 4 of reinforced bar sleeve.
Step 2, is connected probe 1 with electric resistance measuring apparatus outside reinforced bar sleeve, and measures resistance value.Carry out resistance measurement
Time, in order to improve certainty of measurement, must first carry out school zero, and select suitable gear according to the probable ranges of dielectric resistance.
Step 3, seeks the resistivity of medium according to the resistance recorded.
Step 4, in the different phase of grouting, according to the resistivity tried to achieve and air and quicksand, damp sand, the resistivity of dry sand
Degree of closeness determine grouting plumpness.
Described probe 1 includes 2 electrodes.
The computing formula of resistivity is:
Wherein, R is the resistance of the medium recorded；ρ is the resistivity of medium；L is the distance between 2 electrodes；S is each
The area of electrode.Distance and the area of electrode between 2 electrodes of probe 1 are all known constants, therefore, according to above formula and
The resistance value recorded can calculate the value of resistivity.
Step 4 determines that the method for grouting plumpness is as follows:
Before mortar initial set, the medium in sleeve is air and quicksand, if the resistivity recorded is close to air resistivity, then overlaps
Cylinder grouting is the fullest；If the resistivity recorded is close to quicksand resistivity, then sleeve grouting is full.
After mortar initial set, mortar is in non-completely dried state, and the medium in sleeve is air and damp sand, if the electricity recorded
Resistance rate is close to air resistivity, then sleeve grouting is the fullest；If the resistivity recorded is close to damp sand resistivity, then sleeve grouting is full
Full.
After mortar is completely dried, the medium in sleeve is air and dry sand, if the resistivity recorded is close to air resistivity,
Then sleeve grouting is the fullest；If the resistivity recorded is close to dry sand resistivity, then sleeve grouting is full.
Preferably, air resistivity takes 1 × 107Ω m, quicksand resistivity takes 1 Ω m, and damp sand resistivity takes 1 × 103Ω m, dry
Sand resistivity takes 1 × 105Ωm。
Described electric resistance measuring apparatus is megger or megameter.
As in figure 2 it is shown, the structure of probe of the present invention includes: the first electrode being made up of one end of the first conductor rod member
11 and the second electrode 12 of constituting of one end by the second conductor rod member.First conductor rod member and the shape phase of the second conductor rod member
With, the first conductor rod member is thinner than the second conductor rod member, longer than the second conductor rod member.Second conductor rod member is hollow structure, second
Conductor rod member is enclosed within the outer surface of the first conductor rod member, sets respectively between the two ends of the second conductor rod member and the first conductor rod member
Putting 2 electrode connectors being made up of insulant 13, described electrode connector 13 is used for fixing the first conductor rod member and second
The relative position of conductor rod member.The outer surface of the second conductor rod member arranges insulation sleeve 14 in close contact therewith, by regulation absolutely
The position of edge set 14, so that the surface area of the second electrode 12 is equal to the surface area of the first electrode 11.
One end of first electrode 11 arranges a plug 15, prevents mortar from entering at the first conductor rod member hollow, impact electricity
Resistance rate certainty of measurement.
As a kind of most preferred embodiment, the first conductor rod member and the second conductor rod member are cylindrical structure.First conductor rods
Part and the second conductor rod member can use other cylinder body shape, such as cuboid, square shape etc. equally.
The length of the first conductor rod member and the second conductor rod member is more than the degree of depth of slurry outlet 8.When measuring, the first conductor
The electrode tip of rod member and the second conductor rod member is positioned at sleeve 4, and the other end is positioned at slurry outlet 8 lateral surface, and surveys with resistance respectively
Amount device (not shown) is connected.Common electrode is required for connecting long wire, makes the free end of wire be exposed at outside slurry outlet 8
Side, for connecting electric resistance measuring apparatus.Probe of the present invention uses the conductor rod member adapted to constitute electrode, it is possible to will
Electric resistance measuring apparatus is directly connected with the conductor rod member being exposed at outside slurry outlet 8, and conductor rod member is arranged above with binding post, saves
The wire that electrically connects with electrode.
The following is the application example of probe of the present invention:
Straight screw sleeve connection structure is as it is shown in figure 1, include: the first component 2, second component 3, sleeve 4, the first member reinforcing steel bar
5, second component reinforcing bar 6, injected hole 7, slurry outlet 8.Due in straight screw sleeve connection structure with the presence of multilayer dielectricity, such as have gold
Belong to, nonmetal medium exists, and the radial thickness of body generally only 5～6 millimeters, Computerized examination device in prior art
Cannot detect, and apply probe of the present invention effectively to detect.
The invention is not restricted to above-mentioned embodiment, those skilled in the art made to above-mentioned embodiment any aobvious and
The improvement being clear to or change, all without beyond the design of the present invention and the protection domain of claims.
Claims (10)
1. the method measuring reinforced bar sleeve grouting plumpness, it is characterised in that comprise the following steps:
Step 1, inserts the electrode of probe in the sleeve of reinforced bar sleeve；
Step 2, is connected probe with electric resistance measuring apparatus outside reinforced bar sleeve, and measures the resistance value of medium in sleeve；
Step 3, seeks the resistivity of medium according to the resistance recorded；
Step 4, in the different phase of grouting, according to the resistivity tried to achieve and air and quicksand, damp sand, the connecing of resistivity of dry sand
Short range degree determines grouting plumpness.
The method of measurement reinforced bar sleeve the most according to claim 1 grouting plumpness, it is characterised in that described probe includes
2 electrodes.
The method of measurement reinforced bar sleeve the most according to claim 2 grouting plumpness, it is characterised in that the calculating of resistivity
Formula is:
Wherein, R is the resistance recorded；ρ is the resistivity of medium；L is the distance between 2 electrodes；S is the face of each electrode
Long-pending.
The method of measurement reinforced bar sleeve the most according to claim 1 grouting plumpness, it is characterised in that step 4 determines filling
The method of slurry plumpness is as follows:
Before mortar initial set, the medium in sleeve is air and quicksand, if the resistivity recorded is close to air resistivity, then sleeve fills
Starch the fullest；If the resistivity recorded is close to quicksand resistivity, then sleeve grouting is full；
After mortar initial set, mortar is in non-completely dried state, and the medium in sleeve is air and damp sand, if the resistivity recorded
Close to air resistivity, then sleeve grouting is the fullest；If the resistivity recorded is close to damp sand resistivity, then sleeve grouting is full；
After mortar is completely dried, the medium in sleeve is air and dry sand, if the resistivity recorded is close to air resistivity, then overlaps
Cylinder grouting is the fullest；If the resistivity recorded is close to dry sand resistivity, then sleeve grouting is full.
The method of measurement reinforced bar sleeve the most according to claim 4 grouting plumpness, it is characterised in that air resistivity is
1×107Ω m, quicksand resistivity is 1 Ω m, and damp sand resistivity is 1 × 103Ω m, dry sand resistivity is 1 × 105Ωm。
The method of measurement reinforced bar sleeve the most according to claim 1 grouting plumpness, it is characterised in that described resistance measurement
Device is megger or megameter.
7. one kind is applied to the probe of method described in claim 1～6 any one, it is characterised in that described probe includes: by
The first electrode that one end of first conductor rod member is constituted and the second electrode being made up of one end of the second conductor rod member；First conductor
The shape of rod member and the second conductor rod member is identical, and the first conductor rod member is thinner than the second conductor rod member, longer than the second conductor rod member；The
Two conductor rod members are hollow structure, and the second conductor rod member is enclosed within outside the first conductor rod member, the two ends of the second conductor rod member with
Be respectively provided with 2 electrode connectors being made up of insulant between first conductor rod member, be used for fixing the first conductor rod member and
The relative position of the second conductor rod member；The outer surface of the second conductor rod member arranges insulation sleeve intimate contact therewith, and insulation sleeve makes
The surface area of the second electrode is equal to the surface area of the first electrode.
Probe the most according to claim 7, it is characterised in that one end of described first electrode arranges a plug.
Probe the most according to claim 7, it is characterised in that described first conductor rod member and the second conductor rod member are cylinder
Body.
Probe the most according to claim 7, it is characterised in that the length of the first conductor rod member and the second conductor rod member is big
The degree of depth in slurry outlet；When measuring, the electrode tip of the first conductor rod member and the second conductor rod member is positioned at sleeve, the other end
It is positioned at outside slurry outlet, is connected with electric resistance measuring apparatus respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610780372.XA CN106124569A (en) | 2016-08-30 | 2016-08-30 | A kind of for measuring the reinforced bar sleeve grouting probe of plumpness and method |
Applications Claiming Priority (1)
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| CN201610780372.XA CN106124569A (en) | 2016-08-30 | 2016-08-30 | A kind of for measuring the reinforced bar sleeve grouting probe of plumpness and method |
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|---|---|---|---|---|
| CN107328921A (en) * | 2017-05-11 | 2017-11-07 | 中国建筑股份有限公司 | A kind of grout sleeve grouting material plumpness detection means and method |
| CN107991348A (en) * | 2017-12-29 | 2018-05-04 | 中冶建筑研究总院有限公司 | A kind of grouting material plumpness detection method and device |
| CN108037158A (en) * | 2017-12-29 | 2018-05-15 | 中冶建筑研究总院有限公司 | A kind of method and apparatus being detected using metal detection line to grouting material plumpness |
| CN108051480A (en) * | 2017-12-29 | 2018-05-18 | 中冶建筑研究总院有限公司 | A kind of grouting material plumpness detection method and device and grout sleeve |
| CN108120826A (en) * | 2018-02-07 | 2018-06-05 | 浙江工业大学工程设计集团有限公司 | A kind of sleeve grouting integrated experiment device and test method |
| CN108152297A (en) * | 2018-01-31 | 2018-06-12 | 昆山市建设工程质量检测中心 | Inside peep the device and method of water flood detection reinforcing bar half grout sleeve grouting plumpness |
| CN108343195A (en) * | 2018-01-31 | 2018-07-31 | 中国建筑股份有限公司 | A kind of intelligence grout sleeve and application process |
| CN108593721A (en) * | 2018-05-11 | 2018-09-28 | 中国建筑科学研究院有限公司 | Method and device for detecting whether full grouting sleeve is full by resistance method |
| CN108761049A (en) * | 2018-06-13 | 2018-11-06 | 中国建筑科学研究院有限公司 | Device and method for detecting grouting fullness of steel bar connecting sleeve through preformed hole |
| CN108802110A (en) * | 2018-05-31 | 2018-11-13 | 宁波联城住工科技有限公司 | Detection device and its detection method for measuring grout sleeve Grouted density |
| CN108872547A (en) * | 2018-05-11 | 2018-11-23 | 建研科技股份有限公司 | Device and method for detecting whether full grouting sleeve is full |
| CN109387141A (en) * | 2018-11-13 | 2019-02-26 | 中建安装工程有限公司 | A kind of full grout sleeve anchorage length of steel bar detection device |
| CN109540972A (en) * | 2018-11-21 | 2019-03-29 | 东南大学 | Sleeve grouting quality detection device |
| CN109579679A (en) * | 2018-11-13 | 2019-04-05 | 中建安装工程有限公司 | A kind of half grout sleeve anchorage length of steel bar detection device |
| CN109856191A (en) * | 2019-01-04 | 2019-06-07 | 西南交通大学 | A method of detection sleeve grouting quality |
| CN110208329A (en) * | 2019-06-24 | 2019-09-06 | 徐豫青 | A kind of sleeve Grouted density detection method and device |
| CN110285867A (en) * | 2019-07-29 | 2019-09-27 | 北京中建建筑科学研究院有限公司 | Device and method for monitoring grouting fullness of steel bar sleeve of prefabricated concrete structure |
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| CN108120826B (en) * | 2018-02-07 | 2023-12-29 | 浙江工业大学工程设计集团有限公司 | Comprehensive sleeve grouting test device and test method |
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| CN108593721A (en) * | 2018-05-11 | 2018-09-28 | 中国建筑科学研究院有限公司 | Method and device for detecting whether full grouting sleeve is full by resistance method |
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| CN108761049A (en) * | 2018-06-13 | 2018-11-06 | 中国建筑科学研究院有限公司 | Device and method for detecting grouting fullness of steel bar connecting sleeve through preformed hole |
| CN109387141A (en) * | 2018-11-13 | 2019-02-26 | 中建安装工程有限公司 | A kind of full grout sleeve anchorage length of steel bar detection device |
| CN109579679A (en) * | 2018-11-13 | 2019-04-05 | 中建安装工程有限公司 | A kind of half grout sleeve anchorage length of steel bar detection device |
| CN109579679B (en) * | 2018-11-13 | 2024-03-05 | 中建安装工程有限公司 | Half grout sleeve reinforcing bar anchor length detection device |
| CN109387141B (en) * | 2018-11-13 | 2024-03-08 | 中建安装工程有限公司 | Full grouting sleeve steel bar anchoring length detection device |
| CN109540972B (en) * | 2018-11-21 | 2021-06-01 | 东南大学 | Sleeve grouting quality detection device |
| CN109540972A (en) * | 2018-11-21 | 2019-03-29 | 东南大学 | Sleeve grouting quality detection device |
| CN109856191A (en) * | 2019-01-04 | 2019-06-07 | 西南交通大学 | A method of detection sleeve grouting quality |
| CN110208329A (en) * | 2019-06-24 | 2019-09-06 | 徐豫青 | A kind of sleeve Grouted density detection method and device |
| CN110285867A (en) * | 2019-07-29 | 2019-09-27 | 北京中建建筑科学研究院有限公司 | Device and method for monitoring grouting fullness of steel bar sleeve of prefabricated concrete structure |
| CN114001847A (en) * | 2021-12-07 | 2022-02-01 | 哈尔滨工业大学 | Self-monitoring method for stress of connection node of grouting sleeve for assembly structure |
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