CN107421664A - It is a kind of to measure steel and the foil gauge and method of attaching of concrete binding sliding - Google Patents
It is a kind of to measure steel and the foil gauge and method of attaching of concrete binding sliding Download PDFInfo
- Publication number
- CN107421664A CN107421664A CN201710371113.6A CN201710371113A CN107421664A CN 107421664 A CN107421664 A CN 107421664A CN 201710371113 A CN201710371113 A CN 201710371113A CN 107421664 A CN107421664 A CN 107421664A
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- China
- Prior art keywords
- steel
- foil gauge
- concrete
- cap rock
- substrate layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
Abstract
It is a kind of to measure steel and the foil gauge and method of attaching of concrete binding sliding, foil gauge includes basalis, basalis is divided into upper part, center section and lower part, wherein, upper part is as concrete substrate layer, the leading flank of concrete substrate layer pastes concrete cap rock, and concrete substrate layer and concrete cap rock collectively form concrete and paste section；Center section is formed without stickup section; it is the sensitive grid by being pasted onto basalis center section leading flank; the protection sliding upper strata of sensitive grid leading flank is pasted onto, and is pasted onto the protection sliding lower floor composition of center section trailing flank, sensitive grid is provided with the lead-out wire for connecting external measurement device；Lower part pastes steel cap rock as steel substrate layer, the trailing flank of steel substrate layer, and steel substrate layer and steel cap rock collectively form steel and paste section.The foil gauge and method of testing steel that the present invention uses it goes without doing slot treatment, substantial amounts of cost of manufacture is saved, strain method of attaching is simple to operation, will not damage steel actual strength.
Description
Technical field
The present invention relates to a kind of foil gauge.More particularly to a kind of foil gauge for measuring the sliding of steel and concrete binding and
Method of attaching.
Background technology
Bond-slip properties between steel and concrete are civil engineering structure and a focus of association area research
Problem, particularly under earthquake reciprocating load, the bond-slip effect between steel and concrete will have a strong impact on structure
Overall shock-resistance features, therefore, the research slid to steel and concrete binding all have very in theoretical and engineering practice
Important meaning.Bond-slip effect between traditional steel and concrete is carried out often through push out test, and is assumed
Steel are unyielding, by steel and the equilibrium equation of concrete, obtain bond stress.The method of testing of steel strain is by steel
Slot in simultaneously and paste resistance strain gage, so as to obtain the bond stress that steel change along anchorage length.For steel reinforced concrete structure,
Typically first along the densely covered resistance strain gage of section steel flange of anchorage length, the mutual pass strained according to bond stress and section steel flange
System, draw the regularity of distribution of bond stress.But this method typically can largely damage steel actual strength, cutting steel
Paster bothers, and test efficiency is not high enough.
The content of the invention
The technical problem to be solved by the invention is to provide a kind of measurement steel for being not required to do steel slot treatment with mixing
Coagulate the foil gauge and method of attaching of native bond-slip.
The technical solution adopted in the present invention is：It is a kind of to measure steel and the foil gauge of concrete binding sliding, including base
Bottom, the basalis are divided into upper part, center section and lower part, wherein, described upper part as concrete substrate layer,
The leading flank of the concrete substrate layer pastes concrete cap rock, and described concrete substrate layer and concrete cap rock collectively form
Concrete pastes section；Described center section is formed without section is pasted, and is the sensitivity by being pasted onto basalis center section leading flank
Grid, are pasted onto the protection sliding upper strata of the sensitive grid leading flank, and are pasted onto under the protection sliding of center section trailing flank
Layer is formed, and described sensitive grid is provided with the lead-out wire for connecting external measurement device；Described lower part is as steel base
Steel cap rock is pasted in bottom, the trailing flank of the steel substrate layer, and the steel substrate layer and steel cap rock collectively form steel
Paste section.
The upper end edge on the base of described concrete cap rock and described protection sliding upper strata is bonding connection, described guarantor
The base of shield sliding lower floor and the upper end edge of described steel cap rock are bonding connection.
Described basalis is made up of bonding agent and organic resin film.
Described concrete cap rock, protection sliding upper strata, protection sliding lower floor and steel cap rock is to use flexible foam
Plastic production.
Described sensitive grid uses a kind of making in constantan, nichrome aluminum alloy, Aludirome, platinum and platinum-tungsten alloys.
A kind of method of attaching for measuring steel and the foil gauge of concrete binding sliding, it is characterised in that including following step
Suddenly：
1) mortar specimen for being bonded foil gauge is made using mortar,
2) concrete substrate layer of foil gauge, protection sliding lower floor and steel cap rock are pasted mortar specimen and polished smooth
One side；
3) surface of shaped steel or reinforcing bar is polished smooth using emery wheel or sand paper, and it is clean with alcohol washes, by foil gauge
Steel substrate layer, protection sliding upper strata and concrete cap rock and shaped steel or reinforcing bar firmly paste；
4) it is with iron wire that mortar specimen and shaped steel or reinforcing bar colligation is firm after bonding agent solidification, and in shaped steel or reinforcing bar and
Cement injection mortar between mortar specimen, at the same detect two lead-out wire line ends of foil gauge resistance whether be foil gauge standard
Resistance, whether the resistance between lead-out wire and steel is infinitely great；
5) cement mortar solidification after-pouring concrete to be irrigated, while detect two lead-out wire line end resistance of foil gauge and be
The no measuring resistance for foil gauge, whether the resistance between foil gauge lead-out wire and steel is infinitely great.
The mortar specimen made in step 1) is the concrete strength and modulus of elasticity identical mortar specimen with being tested,
The mortar specimen one side Nian Jie with foil gauge is polished smooth using sand paper, and it is clean with alcohol washes, in addition at three face feather pluckings
Reason.
The width and height of test block are more than the diameter of tested reinforcing bar, and length is more than 2cm.
In step 4) and step 5), when two lead-out wire line end resistance of foil gauge are the measuring resistances that deviate foil gauge, then
Foil gauge is damaged, when the non-infinity of resistance between foil gauge lead-out wire and steel, then foil gauge failure.
A kind of measurement steel of the present invention and the foil gauge and method of attaching of concrete binding sliding, it is assumed that concrete is pasted
Section concrete strains pastes section concrete strain facies with (or concrete pastes the strain of section steel and pastes section steel with steel with steel
Strain facies is same), concrete pastes section substrate and steel are pasted section substrate and glued respectively with concrete and steel strong bond, concrete
Foil gauge can then be passed through with Free Transform between patch section lid layer and steel and between steel stickup section lid layer and concrete
Test result characterizes the bond-slip between concrete and steel.It goes without doing for the foil gauge and method of testing steel that the present invention uses
Slot treatment, substantial amounts of cost of manufacture is saved, strain method of attaching is simple to operation, and strain testing method is surveyed with tradition strain
Measure identical, while steel actual strength will not be damaged.
Brief description of the drawings
Fig. 1 is a kind of positive structure schematic for measuring steel and the foil gauge of concrete binding sliding of the present invention；
Fig. 2 is a kind of section structure diagram for measuring steel and the foil gauge of concrete binding sliding of the present invention.
In figure
1：Concrete cap rock 2：Concrete substrate layer
3：Protection sliding upper strata 4：Sensitive grid
5：Protection sliding lower floor 6：Lead-out wire
7：Steel substrate layer 8：Steel cap rock
9：Concrete pastes section 10：Without stickup section
11：Steel paste section 12：Basalis
Embodiment
With reference to embodiment and accompanying drawing to a kind of measurement steel of the present invention and the foil gauge of concrete binding sliding and
Method of attaching is described in detail.
To make purpose, the technology of the foil gauge of a kind of measurement steel of the present invention and concrete binding sliding and method of attaching
Scheme and effect are clearer, clear and definite, and embodiment is that the present invention is described in more detail.It is it should be appreciated that described herein
Specific embodiment only to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1 and Figure 2, a kind of measurement steel of the invention and the foil gauge of concrete binding sliding, including basalis
12, the basalis 12 divides for upper part, center section and lower part, wherein, described upper part is as concrete substrate layer
2, the leading flank of the concrete substrate layer 2 pastes concrete cap rock 1, and described concrete substrate layer 2 and concrete cap rock 1 are common
Section 9 is pasted with concrete is formed；Described center section is formed without section 10 is pasted, be by being pasted onto the center section of basalis 12 before
The sensitive grid 4 of side, is pasted onto the protection sliding upper strata 3 of the leading flank of sensitive grid 4, and is pasted onto center section trailing flank
Protection sliding lower floor 5 form, described sensitive grid 4 is provided with the lead-out wire 6 for connecting external measurement device.That is, it is sensitive
Grid 4 are connected composition Huygens's electric bridge by lead-out wire 6 with other test point foil gauges or compensating plate, and connect with strain acquirement instrument
Connect；Described lower part pastes steel cap rock 8, the steel as steel substrate layer 7, the trailing flank of the steel substrate layer 7
Basalis 7 and steel cap rock 8 collectively form steel and paste section 11.Deformation of the foil gauge of the present invention by measuring sensitive grid 4 is surveyed
Try steel and paste caused Relative sliding between section 11 and concrete stickup section 9, obtain and bond cunning between steel and concrete
Move strain.
The upper end edge on the base of described concrete cap rock 1 and described protection sliding upper strata 3 is bonding connection, described
The base of protection sliding lower floor 5 and the upper end edge of described steel cap rock 8 are bonding connection.
During test, steel substrate layer 7, protection sliding upper strata 3 and concrete cap rock 1 are firmly pasted with steel；Coagulation soil matrix
2 layers of bottom, protection sliding lower floor 5 and steel cap rock 8 and concrete bonding.
In the foil gauge that a kind of measurement steel of the present invention slide with concrete binding, described basalis 12 is by being bonded
Agent and organic resin film are made.Described concrete cap rock 1, protection sliding upper strata 3, protection sliding lower floor 5 and steel cap rock 8
It is to be made using flexible cellular plastic.Described sensitive grid 4 is using constantan, nichrome aluminum alloy, Aludirome, platinum and platinum tungsten
A kind of making in alloy.
The method of attaching of a kind of measurement steel of the present invention and the foil gauge of concrete binding sliding, comprises the following steps：
1) mortar specimen for being bonded foil gauge is made using mortar；
Made mortar specimen is the concrete strength and modulus of elasticity identical mortar specimen with being tested, the examination
The width and height of block are more than the diameter of tested reinforcing bar, and length is more than 2cm.The mortar specimen one side Nian Jie with foil gauge is adopted
Polished smooth with sand paper, and, in addition three face feather plucking processing, with the concrete that pours firmly to merge clean with alcohol washes.
2) concrete substrate layer of foil gauge, protection sliding lower floor and steel cap rock are pasted mortar specimen and polished smooth
One side；
3) surface of shaped steel or reinforcing bar is polished smooth using emery wheel or sand paper, and it is clean with alcohol washes, by foil gauge
Steel substrate layer, protection sliding upper strata and concrete cap rock and shaped steel or reinforcing bar firmly paste；
4) it is with iron wire that mortar specimen and shaped steel or reinforcing bar colligation is firm after bonding agent solidification, and in shaped steel or reinforcing bar and
Cement injection mortar between mortar specimen, at the same detect two lead-out wire line ends of foil gauge resistance whether be foil gauge standard
Resistance, whether the resistance between lead-out wire and steel is infinitely great；When two lead-out wire line end resistance of foil gauge are to deviate strain
The measuring resistance of piece, then foil gauge be damaged, when the non-infinity of resistance between foil gauge lead-out wire and steel, then foil gauge loses
Effect.
5) cement mortar solidification after-pouring concrete to be irrigated, while detect two lead-out wire line end resistance of foil gauge and be
The no measuring resistance for foil gauge, whether the resistance between foil gauge lead-out wire and steel is infinitely great.When foil gauge, two are drawn
Outlet line end resistance is the measuring resistance for deviateing foil gauge, then foil gauge is damaged, the electricity between foil gauge lead-out wire and steel
Non- infinity is hindered, then foil gauge fails.
Claims (9)
1. a kind of measure steel and the foil gauge of concrete binding sliding, including basalis (12), it is characterised in that the substrate
Layer (12) is divided into upper part, center section and lower part, wherein, described upper part is described mixed as concrete substrate layer (2)
The leading flank of solidifying soil matrix bottom (2) pastes concrete cap rock (1), and described concrete substrate layer (2) and concrete cap rock (1) are altogether
Section (9) is pasted with concrete is formed；Described center section is formed without section (10) is pasted, and is by being pasted onto among basalis (12)
The sensitive grid (4) of part leading flank, is pasted onto protection sliding upper strata (3) of the sensitive grid (4) leading flank, and is pasted onto
Between the protection sliding lower floor (5) of part trailing flank form, described sensitive grid (4) is provided with for connecting external measurement device
Lead-out wire (6)；Described lower part pastes steel cap rock as steel substrate layer (7), the trailing flank of the steel substrate layer (7)
(8), the steel substrate layer (7) and steel cap rock (8) collectively form steel stickup section (11).
2. a kind of foil gauge for measuring steel and being slid with concrete binding according to claim 1, it is characterised in that described
The base of concrete cap rock (1) and the upper end edge of described protection sliding upper strata (3) be bonding connection, described protection slides
The base of lower floor (5) and the upper end edge of described steel cap rock (8) are bonding connection.
3. a kind of foil gauge for measuring steel and being slid with concrete binding according to claim 1, it is characterised in that described
Basalis (12) be made up of bonding agent and organic resin film.
4. a kind of foil gauge for measuring steel and being slid with concrete binding according to claim 1, it is characterised in that described
Concrete cap rock (1), protection sliding upper strata (3), protection sliding lower floor (5) and steel cap rock (8) be to use flexible foam
Plastic production.
5. a kind of foil gauge for measuring steel and being slid with concrete binding according to claim 1, it is characterised in that described
Sensitive grid (4) use a kind of making in constantan, nichrome aluminum alloy, Aludirome, platinum and platinum-tungsten alloys.
6. the method for attaching of the measurement steel and the foil gauge of concrete binding sliding described in a kind of claim 1, its feature exist
In comprising the following steps：
1) mortar specimen for being bonded foil gauge is made using mortar,
2) one that the concrete substrate layer of foil gauge, protection sliding lower floor and steel cap rock are pasted that mortar specimen polishes smooth
Face；
3) surface of shaped steel or reinforcing bar is polished smooth using emery wheel or sand paper, and it is clean with alcohol washes, by the steel of foil gauge
Material basalis, protection sliding upper strata and concrete cap rock and shaped steel or reinforcing bar are firmly pasted；
4) it is with iron wire that mortar specimen and shaped steel or reinforcing bar colligation is firm after bonding agent solidification, and in shaped steel or reinforcing bar and mortar
Cement injection mortar between test block, at the same detect two lead-out wire line ends of foil gauge resistance whether be foil gauge standard electric
Resistance, whether the resistance between lead-out wire and steel is infinitely great；
5) cement mortar solidification after-pouring concrete to be irrigated, at the same detect two lead-out wire line end resistance of foil gauge whether be
The measuring resistance of foil gauge, whether the resistance between foil gauge lead-out wire and steel is infinitely great.
7. the method for attaching of measurement steel according to claim 6 and the foil gauge of concrete binding sliding, its feature exist
In the mortar specimen made in step 1) is the concrete strength and modulus of elasticity identical mortar specimen with being tested, by sand
The slurry test block one side Nian Jie with foil gauge is polished smooth using sand paper, and clean with alcohol washes, in addition three face feather plucking processing.
8. the method for attaching of measurement steel according to claim 7 and the foil gauge of concrete binding sliding, its feature exist
In the width and height of test block are more than the diameter of tested reinforcing bar, and length is more than 2cm.
9. the method for attaching of measurement steel according to claim 6 and the foil gauge of concrete binding sliding, its feature exist
In, step 4) and step 5), when two lead-out wire line end resistance of foil gauge are the measuring resistances that deviate foil gauge, then foil gauge
It is impaired, when the non-infinity of resistance between foil gauge lead-out wire and steel, then foil gauge failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371113.6A CN107421664B (en) | 2017-05-24 | 2017-05-24 | Strain gauge for measuring bonding slippage between steel and concrete and pasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371113.6A CN107421664B (en) | 2017-05-24 | 2017-05-24 | Strain gauge for measuring bonding slippage between steel and concrete and pasting method |
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| Publication Number | Publication Date |
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| CN107421664A true CN107421664A (en) | 2017-12-01 |
| CN107421664B CN107421664B (en) | 2020-05-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274872A (en) * | 2019-04-15 | 2019-09-24 | 内蒙古科技大学 | Directly measure the method for adhesive property on PEC steel reinforced concrete adhesive surface |
| CN111398164A (en) * | 2020-03-30 | 2020-07-10 | 太原理工大学 | Test device for measuring axial multi-point slippage of concrete filled steel tube |
| CN112763301A (en) * | 2021-03-19 | 2021-05-07 | 张明俊 | Building concrete anti-cracking performance detection system with surface mounting function |
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| CN101819134A (en) * | 2010-04-02 | 2010-09-01 | 西安建筑科技大学 | Test method for measuring bond stress between reinforcing steel bars and concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274872A (en) * | 2019-04-15 | 2019-09-24 | 内蒙古科技大学 | Directly measure the method for adhesive property on PEC steel reinforced concrete adhesive surface |
| CN111398164A (en) * | 2020-03-30 | 2020-07-10 | 太原理工大学 | Test device for measuring axial multi-point slippage of concrete filled steel tube |
| CN112763301A (en) * | 2021-03-19 | 2021-05-07 | 张明俊 | Building concrete anti-cracking performance detection system with surface mounting function |
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| Publication number | Publication date |
|---|---|
| CN107421664B (en) | 2020-05-22 |
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