CN109682511A - A kind of device and method using steel fiber reinforced concrete aggregate measurement extruding force - Google Patents
A kind of device and method using steel fiber reinforced concrete aggregate measurement extruding force Download PDFInfo
- Publication number
- CN109682511A CN109682511A CN201910039269.3A CN201910039269A CN109682511A CN 109682511 A CN109682511 A CN 109682511A CN 201910039269 A CN201910039269 A CN 201910039269A CN 109682511 A CN109682511 A CN 109682511A
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- China
- Prior art keywords
- aggregate
- strain gage
- resistance strain
- extruding force
- fiber reinforced
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- 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
- G01L1/2287—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 constructional details of the strain gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of method and device using steel fiber reinforced concrete aggregate measurement extruding force, which includes built-in sensors and external aggregate；Built-in sensors include resistance strain gage, resistance strain gage connecting terminal, thin steel disc, aggregate, aggregate mold；One side surface of thin steel disc is fixed with resistance strain gage, and resistance strain gage connecting terminal is fixed against resistance strain gage, each resistance strain gage and resistance strain gage connecting terminal are one group, is respectively connected with one group of twin-core multiply copper wires；Epoxy resin is applied to resistance strain gage and resistance strain gage connecting terminal surface again, so that package foil gauge wire grid, resistor disc lead and resistance strain gage connecting terminal is completely covered in it.Built-in sensors are fixed on inside external aggregate.The measuring device is installed between type steel-concrete for measuring extruding force.Between type steel-concrete of the present invention and it can guarantee that sensor will not be damaged in measurement process.
Description
Technical field
It is the present invention relates to the measuring device and measuring method of field of civil engineering, in particular to a kind of built-in for surveying
Measure the electronic sensor of extruding force between steel reinforced concrete, and the method using the sensor measurement Inner extrusion power.
Background technique
For steel reinforced concrete structure, basis that the fashioned iron material different from both performances of concrete can work together
As between them there is cementation, this effect can make between fashioned iron and concrete on steel reinforced concrete joint face
The transmitting for realizing stress, to set up working stress required for structure bearing load between the two materials.It is bonding
While stress works, the joint face of fashioned iron and concrete can be deformed and modified difference, and generates the relatively sliding of two kinds of materials
It moves.
Exactly because can work together fashioned iron and concrete, shared load there are cementation.And
Show that the extruding force between fashioned iron and concrete is affected to the cementitiousness between steel reinforced concrete according to existing research；Root
Show in the same circumstances according to existing test result, due to contribution of the extruding force to bonding in indentation test, so that fashioned iron and mixed
Cementation between solidifying soil improves 30% or so.Currently, not seen what extruding force between related steel reinforced concrete measured also
Correlation test result of study and data.In order to specifically understand the force-mechanism of steel reinforced concrete structure, bearing capacity calculates and becomes
Shape etc., the measurement to Inner extrusion power between fashioned iron and concrete suffer from academic research, practical engineering application etc. important
Meaning.
Summary of the invention
Goal of the invention: the invention discloses it is a kind of using steel fiber reinforced concrete aggregate measurement extruding force device and method,
The device can conveniently, directly and accurately measure fashioned iron and concrete work together, shared load when they it
Between extruding force；This method implementation is relatively simple, and it is simple to convert.
Technical solution: a kind of device using steel fiber reinforced concrete aggregate measurement extruding force, including built-in sensors and outer
Portion's aggregate；The external aggregate includes aggregate, aggregate mold；The aggregate is poured in concrete mold；
The built-in sensors are placed in the aggregate.
Specifically, the built-in sensors include resistance strain gage, resistance strain gage connecting terminal, thin steel disc；Thin steel disc
A side surface be fixed with resistance strain gage, resistance strain gage connecting terminal is fixed against resistance strain gage, each resistance
Foil gauge and resistance strain gage connecting terminal are connected as one group, and each group is respectively connected with one group of twin-core multiply copper wires；Epoxy
Resin is applied to resistance strain gage and resistance strain gage connecting terminal surface, and package foil gauge wire grid, resistor disc lead is completely covered
And resistance strain gage connecting terminal.
Specifically, concrete mold is hexahedron structure, bottom is provided with die bottom plate circular hole, twin-core multiply copper
Matter electric wire is pierced by from the die bottom plate circular hole and connects electricity；The concrete mold top opening, the thin steel disc perpendicular to
At the top of concrete mold；Thin steel disc upper end is provided with thin cotton thread or hard wooden stick, for facilitating the positioning of steel disc.
For the ease of removing, concrete mold material is veneer.
A method of extruding force being measured using the device of above-mentioned steel fiber reinforced concrete aggregate measurement extruding force, including as follows
Step:
Step 1) removes the concrete mold outside the device of the steel fiber reinforced concrete aggregate made measurement extruding force
Obtain internal aggregate sensor；
Aggregate sensor is positioned on the contact surface of fashioned iron and concrete by step 2)；Guarantee that the steel in aggregate sensor is fine
Length direction is tieed up perpendicular to the contact surface；
In normal operation, aggregate sensor will be squeezed the effect of power and generates deformation step 3), this shape
Become between extruding force and converted by elastic modulus E, the numerical value of E is different with material, is determined by experiment；This shape
Become the steel fibre passed in aggregate again, stress value σ at this time can be measured by the foil gauge on steel fibre, it is fixed according to Hooke
RuleThe strain stress of fiber under the working condition is obtained, so that counter release extruding force.
The utility model has the advantages that the device and prior art phase disclosed by the invention using steel fiber reinforced concrete aggregate measurement extruding force
Than having the beneficial effect that:
1, design is rationally, production is simple, operation is convenient, obtains the number of extruding force by the deformation conversion of aggregate
Value, for measurement process closer to true working condition, measurement result is true and reliable；
2, the design of aggregate has adequately protected thin steel disc and foil gauge, effectively prevents it in component production and concrete vibration
It is damaged during smashing, ensure that the normal work and signal output in sensing device later period；
3, waterproof performance is good, is used directly in steel reinforced concrete structure, does not need in addition to take waterproof measure；
4, the configuration design size of aggregate formula sensing device is small, light weight, can be used for the type of general normal size component
The measurement of extruding force between steel and concrete；
5, low manufacture cost, easy to accomplish and easy to operate, can carry out batch production production according to demand；
Method disclosed by the invention using steel fiber reinforced concrete aggregate measurement extruding force is suitable for steel reinforced concrete structure
The measurement of the Inner extrusion power of Shaped Steel and concrete joint face, can not only measure unidirectional load, be also suitable for back and forth loading
In the case of extruding force measurement, be a kind of performance it is stable, can in civil engineering widely used test measurement method.
Detailed description of the invention
Fig. 1 is the schematic diagram of aggregate sensor in the present invention；
Fig. 2 is aggregate mold schematic diagram of the present invention；
Fig. 3 is aggregate mold diagrammatic cross-section of the present invention；
Fig. 4 is aggregate mold overhead sectional view of the present invention；
Fig. 5 is the built-in sensors schematic diagram of aggregate sensor of the present invention；
Fig. 6 is aggregate working sensor status diagram of the present invention.
Specific embodiment
As depicted in figs. 1 and 2, a kind of device using steel fiber reinforced concrete aggregate measurement extruding force, including built-in sensing
Device and external aggregate；External aggregate includes aggregate 4, aggregate mold 5；Aggregate 4 is poured in concrete mold 5
It is interior；Built-in sensors are placed in the aggregate 4.
As shown in figure 5, built-in sensors include resistance strain gage 1, resistance strain gage connecting terminal 2, thin steel disc 3；Thin steel
One side surface of piece 3 is fixed with resistance strain gage 1, and resistance strain gage connecting terminal 2 is fixed against resistance strain gage 1, each
A resistance strain gage 1 and resistance strain gage connecting terminal 2 are connected as one group, and each group is respectively connected with one group of copper electricity of twin-core multiply
Line 6；Epoxy resin is applied to 2 surface of resistance strain gage 1 and resistance strain gage connecting terminal, be completely covered package foil gauge wire grid 7,
Resistor disc lead 8 and resistance strain gage connecting terminal 2.
As shown in figs. 2 to 4, coagulating clay model tool 5 is hexahedron structure, and 5 bottom of concrete mold is provided with die bottom plate circle
Shape hole 10, twin-core multiply copper wires 6 are pierced by from die bottom plate circular hole 10 along the lower section of thin steel disc 3 and connect electricity.Thin steel
3 upper end of piece is provided with thin cotton thread or hard wooden stick.5 top opening of concrete mold, thin steel disc 3 is perpendicular to concrete mold 5
It places at top.
5 material of concrete mold is veneer, can tear concrete mold 5 open after internal aggregate sensor molding
It removes；To obtain steel fiber reinforced concrete aggregate sensor.
A method of extruding force, feature are measured using the device of above-mentioned steel fiber reinforced concrete aggregate measurement extruding force
It is: includes the following steps:
Step 1) removes the concrete mold 5 outside the device of the steel fiber reinforced concrete aggregate made measurement extruding force
Obtain internal aggregate sensor；
Aggregate sensor is positioned on the contact surface of fashioned iron and concrete by step 2)；Guarantee that the steel in aggregate sensor is fine
Length direction is tieed up perpendicular to the contact surface；
In normal operation, aggregate sensor will be squeezed the effect of power and generates deformation step 3), this shape
Become between extruding force and converted by elastic modulus E, the numerical value of E is different with material, is determined by experiment；This shape
Become the steel fibre passed in aggregate again, stress value σ at this time can be measured by the foil gauge on steel fibre, it is fixed according to Hooke
RuleThe strain stress of fiber under the working condition is obtained, so that counter release extruding force.
Claims (7)
1. a kind of device using steel fiber reinforced concrete aggregate measurement extruding force, including built-in sensors and external aggregate；It is special
Sign is: the external aggregate includes aggregate (4), aggregate mold (5)；The aggregate (4) pours in coagulation
Clay model has in (5)；The built-in sensors are placed in the aggregate (4).
2. the device according to claim 1 using steel fiber reinforced concrete aggregate measurement extruding force, it is characterised in that: described
Built-in sensors include resistance strain gage (1), resistance strain gage connecting terminal (2), thin steel disc (3)；The side table of thin steel disc (3)
Face is fixed with resistance strain gage (1), resistance strain gage connecting terminal (2) is fixed against resistance strain gage (1), each resistance
Foil gauge (1) and resistance strain gage connecting terminal (2) are connected as one group, and each group is respectively connected with one group of twin-core multiply copper wires
(6)；Epoxy resin is applied to resistance strain gage (1) and resistance strain gage connecting terminal (2) surface, and package foil gauge silk is completely covered
Grid (7), resistor disc lead (8) and resistance strain gage connecting terminal (2).
3. the device according to claim 2 using steel fiber reinforced concrete aggregate measurement extruding force, it is characterised in that: described
Concrete mold (5) bottom is provided with die bottom plate circular hole (10), and the twin-core multiply copper wires (6) are from the mold
Bottom plate circular hole (10), which is pierced by, connects electricity.
4. described in any item devices using steel fiber reinforced concrete aggregate measurement extruding force according to claim 1~3, feature
Be: thin steel disc (3) upper end is provided with thin cotton thread or hard wooden stick.
5. the device according to claim 4 using steel fiber reinforced concrete aggregate measurement extruding force, it is characterised in that: described
Solidifying clay model tool (5) is hexahedron structure, and concrete mold (5) bottom is provided with die bottom plate circular hole (10), double
Core multiply copper wires (6) are pierced by from the die bottom plate circular hole (10) and connect electricity；It is opened at the top of the concrete mold (5)
Mouthful, the thin steel disc (3) is perpendicular at the top of concrete mold (5).
6. the device according to claim 5 using steel fiber reinforced concrete aggregate measurement extruding force, it is characterised in that: described
Concrete mold (5) material is veneer.
7. a kind of side of the device measurement extruding force using steel fiber reinforced concrete aggregate measurement extruding force described in claim 1
Method, characterized by the following steps:
Step 1) removes the concrete mold (5) outside the device of the steel fiber reinforced concrete aggregate made measurement extruding force
To internal aggregate sensor；
Aggregate sensor is positioned on the contact surface of fashioned iron and concrete by step 2)；Guarantee that the steel fibre in aggregate sensor is long
Direction is spent perpendicular to the contact surface；
In normal operation, aggregate sensor will be squeezed the effect of power and generates deformation step 3), this deformation with
It is converted between extruding force by elastic modulus E, the numerical value of E is different with material, is determined by experiment；This deformation is again
The steel fibre in aggregate is passed to, stress value σ at this time can be measured by the foil gauge on steel fibre, according to Hooke's lawObtain the strain stress of fiber under the working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039269.3A CN109682511A (en) | 2019-01-15 | 2019-01-15 | A kind of device and method using steel fiber reinforced concrete aggregate measurement extruding force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039269.3A CN109682511A (en) | 2019-01-15 | 2019-01-15 | A kind of device and method using steel fiber reinforced concrete aggregate measurement extruding force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109682511A true CN109682511A (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910039269.3A Pending CN109682511A (en) | 2019-01-15 | 2019-01-15 | A kind of device and method using steel fiber reinforced concrete aggregate measurement extruding force |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530563A (en) * | 2019-09-05 | 2019-12-03 | 四川大学 | One kind is towards aluminum alloy thin wall pieces Blind Hole Method stress mornitoring assistance platform device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88212860U (en) * | 1988-04-13 | 1988-11-30 | 四川省建筑科学研究院 | Self-compensating strain sensor for concrete |
| CN201653600U (en) * | 2010-03-24 | 2010-11-24 | 国网电力科学研究院 | Isolated strain-free meter |
| CN104374650A (en) * | 2014-11-20 | 2015-02-25 | 广州市建筑科学研究院有限公司 | Testing device and method for testing static force shear property between tubular pile and grouting soil body |
| CN108593896A (en) * | 2018-05-04 | 2018-09-28 | 中国水利水电科学研究院 | Fully graded concrete is unstressed strain gauge means and measurement method |
-
2019
- 2019-01-15 CN CN201910039269.3A patent/CN109682511A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88212860U (en) * | 1988-04-13 | 1988-11-30 | 四川省建筑科学研究院 | Self-compensating strain sensor for concrete |
| CN201653600U (en) * | 2010-03-24 | 2010-11-24 | 国网电力科学研究院 | Isolated strain-free meter |
| CN104374650A (en) * | 2014-11-20 | 2015-02-25 | 广州市建筑科学研究院有限公司 | Testing device and method for testing static force shear property between tubular pile and grouting soil body |
| CN108593896A (en) * | 2018-05-04 | 2018-09-28 | 中国水利水电科学研究院 | Fully graded concrete is unstressed strain gauge means and measurement method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530563A (en) * | 2019-09-05 | 2019-12-03 | 四川大学 | One kind is towards aluminum alloy thin wall pieces Blind Hole Method stress mornitoring assistance platform device |
| CN110530563B (en) * | 2019-09-05 | 2021-06-29 | 四川大学 | Auxiliary platform device for blind hole method stress detection of aluminum alloy thin-wall part |
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Application publication date: 20190426 |