CN106153233A - Stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor - Google Patents
Stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor Download PDFInfo
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- CN106153233A CN106153233A CN201610474275.8A CN201610474275A CN106153233A CN 106153233 A CN106153233 A CN 106153233A CN 201610474275 A CN201610474275 A CN 201610474275A CN 106153233 A CN106153233 A CN 106153233A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor, including coaxially connected steel twisted-line tension-force detection part and steel strand wires elongation detection part, pressure-loaded parts apply active force to prestress wire, and oil pressure identification module identification also records the change of described active force；Described steel twisted-line tension-force detection part detection prestress wire answers pressure changeable under active force, the strain elongation of described steel strand wires elongation detection part detection prestress wire；Each self-monitoring data feeding analyzer-controller is processed by steel twisted-line tension-force detection part, steel strand wires elongation detection part and oil pressure identification module, is calculated the stretching force elongation relation curve of prestress wire.Stretching force under steel strand wires anchor can be carried out quickly, accurately identify by the present invention, does not affect normal construction progress.
Description
Technical field
The present invention relates to stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor.
Background technology
Prestress anchoraging is a kind of actively anchorage technology, has and is effectively increased the stability of Rock And Soil or retaining structure, energy
Offset or reduce tension that structure produces by external loads by preload, slow down crack and occur, ensure structural safety etc.
Advantage, has been widely used in rock-reinforcing, prestressed reinforced concrete construction.
Anchor lower prestress structure belongs to concealed structure category, and quality control difficulty is bigger.Tradition tension technology uses artificial hand
Control oil pump loads, and loads operation, oil meter demarcates the size that all can affect stretching force such as whether accurate；Although using intelligent tensioning to set
Standby relatively Traditional Man controls stretch-draw and stretch-draw quality has been substantially improved, but the existence of systematic error and control error is also very important
Factor, once occur affecting anchor lower prestress stretch-draw effect by batches of.
At present anchor lower prestress detection technique is broadly divided into two kinds: Non-Destructive Testing and damage detection.Non-Destructive Testing is mainly
Sound wave and vibrotechnique are incorporated into mechanics study field, transmitted by sound wave, frequency of vibration respectively with the quantitative relationship of tension force
The anti-size pushing away stretching force, but it is relatively big by external factor interference, there is certain error.Comparatively speaking, detection technique is damaged
Can accurately pass judgment on the size of anchor lower prestress.Xoncrete structure local outside prestressing tendon is abolished, is cut off by bar cutting method
Part steel strand wires detect prestressing force size, but existence operation is complicated, it is irreversible and not enough to the prestressing force detected to damage
Situation such as cannot be adopted an effective measure at the problem；Reinforcement stresses method for releasing can test the stress of structure, but cutting speed, cutting temperature
Degree etc. is the disturbance factor of test stress.Non-Destructive Testing accuracy of detection is the highest, damage detection produces damage, two kinds of inspections to structure
Survey method all can not reach in the case of lossless to structure stretching force under to prestress wire anchor and carry out accurate evaluation.
Summary of the invention
The present invention is to solve the problems referred to above, it is proposed that stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor,
The present invention is capable of lossless to structure and can accurately identify stretching force under strand tapered anchorage anchor.
To achieve these goals, the present invention adopts the following technical scheme that
Stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor, including coaxially connected steel twisted-line tension-force detection
Parts and steel strand wires elongation detection part, pressure-loaded parts apply active force, oil pressure identification module to prestress wire
Identify and record the change of described active force；Described steel twisted-line tension-force detection part detection prestress wire is under active force
Answer pressure changeable, the strain elongation of described steel strand wires elongation detection part detection prestress wire；
Described steel twisted-line tension-force detection part, steel strand wires elongation detection part and oil pressure identification module are by each Autonomous test
Data send into analyzer-controller process, be calculated the stretching force-elongation relation curve of prestress wire.
Described steel twisted-line tension-force detection part, including intermediate plate stopping means, strand tapered anchorage, pressure transducer and protection
Cushion block, described strand tapered anchorage is fixed on intermediate plate stopping means front end, and intermediate plate stopping means passes single prestress wire, makees
Uniformly connect with protection cushion block without directly effect, pressure transducer on strand tapered anchorage and to the intermediate plate on strand tapered anchorage
Touching, and be arranged at intermediate plate stopping means rear end, prestress wire runs through inside pressure transducer and protection cushion block.
Described steel strand wires elongation detection part, including front clip type jack, displacement meter and limiting plate, described front cassette thousand
Front end, jin top is fixed on protection cushion block, and described displacement meter is by cassette before the limiting plate measurement of front clip type jack front end anchor ring
The overhang of jack piston.
Described front clip type jack passes single prestress wire, and its head protects cushion block with strain pressure transducer
Contact, and the revealed section of single prestress wire is clamped.
Described pressure-loaded parts, including hydraulic pump, hydraulic pump applies pressure by oil pipe clip type jack forward.
Further, described hydraulic pump includes hydraulic pump plunger, and described hydraulic pump plunger is through the unidirectional oil path valve of hydraulic pump
By clip type jack oil cylinder before hydraulic oil press-in in hydraulic pump oil pocket, cassette thousand before hydraulic oil promotes in front clip type jack oil cylinder
Jin top piston applies active force.
Described front clip type jack oil path in oil cylinder be laid with control valve, stop valve respectively into and out of oil circuit.
It is disposed with oil pressure identification module in described front clip type jack oil cylinder, automatically identifies oil pressure increment, current cassette thousand
Jin top piston moves ahead suddenly when causing oil pressure moment to be reduced, and it controls oil-feed control valve and closes oil-feed oil circuit, sends buzzing warning,
Automatically terminate to load.Closing oil-feed oil circuit causes stretching force to diminish suddenly so that intermediate plate can not depart from steel strand wires, therefore not
Steel strand wires can be produced secondary crush, it is to avoid the damage that prestressed structure is produced by detection.
Preferably, described hydraulic pump is hydraulic hand-pump.Hydraulic hand-pump is external to realize to the pressurization of front clip type jack
Dew section steel strand wires clamp and apply active force, and hydraulic hand-pump can realize uniform load, loading procedure by the uniform velocity pressing operation
Controllability is good, also can slow down loading velocity when reaching and estimating stretching force under anchor, not only improves accurately identifying of stretching force under anchor
Can guarantee that again detection safety；The portable easy operation of front clip type jack, front clip type jack front end anchor ring arranges limiting plate, passes through
The overhang of front clip type jack piston is surveyed in high precision displacement metering, indirectly obtains the elongation of steel strand wires.
Described steel twisted-line tension-force detection part, steel strand wires elongation detection part are by the pressure gathered and shift simulation letter
Number feeding amplifier is amplified, and is converted to digital signal, digital signal wire transmission by signal converter by analogue signal
To analyzer-controller.
Described analyzer-controller passes through lithium battery power supply, is sent wireless for digital signal by built-in Wireless Transmitter, electricity
Brain terminal receives digital signal by wireless network card receptor, generates real time imaging, stretch-draw force value under display anchor.In test process
Transmission wireless signal data, receive wireless signal by computer terminal, and testing crew can keep certain distance with test site, has
Effect ensures test safety；Its compact, it is convenient for carrying, built-in high-capacity lithium battery, test site non-transformer can be met and power；
Sample frequency is high, Minimum sample rate 10HZ, the highest sample frequency 1000HZ.Can realize steel twisted-line tension-force and elongation high
Frequency gathers, and catches precision high；Its tool height real-time function, matching computer terminal can realize adopting in real time wireless signal data
Collection, in real time display, real-time storage, analyze in real time, meet the test site analyzing and processing instant, various to testing data.
The invention have the benefit that
(1) under the present invention proposes a kind of strand tapered anchorage anchor, the test device of stretching force, can realize prestress steel twist
Lossless, the high precision test of stretching force under line anchor, and steel strand wires will not be produced secondary and crush, it is to avoid prestressing force is tied by detection
The damage that structure produces, it is possible to realize lossless decomposition；
(2) apparatus of the present invention are simply, easily operate, and introduce wireless collection and analyze system and oil pressure Intelligent Recognition, control system,
Stretching force under steel strand wires anchor can be carried out quickly, accurately identify, not affect normal construction progress；
(3) present invention can take to mend stretch-draw measure for the anchor lower prestress deficiency situation detected in time, is a kind of tool
There is the test device of wide promotion prospect；
(4) present invention can realize, to steel twisted-line tension-force and elongation high frequency collection, catching precision high；Its tool is the most real-time
Function, matching computer terminal can realize the Real-time Collection to wireless signal data, in real time display, real-time storage, analyze in real time, full
The foot test site analyzing and processing instant, various to test data；
(5) present invention can identify that oil pressure increment, current clip type jack piston move ahead suddenly and cause oil pressure moment automatically
During reduction, it controls oil-feed control valve and closes oil-feed oil circuit, sends buzzing warning, automatically terminates to load.Close oil-feed oil circuit to lead
Cause stretching force to diminish suddenly so that intermediate plate can not depart from steel strand wires, therefore steel strand wires will not be produced secondary and crush, it is to avoid
The damage that prestressed structure is produced by detection.
Accompanying drawing explanation
Fig. 1 is that this stretch-draw force test device comprises main modular figure；
Fig. 2 is that this stretch-draw force test device each several part forms structural representation；
Fig. 3 is this stretch-draw force test device intermediate plate stopping means schematic diagram；
Fig. 4 is that this stretch-draw force test device wireless collection analyzes system module schematic diagram；
Fig. 5 is this stretch-draw force test device oil pressure Intelligent Recognition, control system module diagram；
Fig. 6 is this stretch-draw force test device stretching force-elongation test curve schematic diagram；
Wherein, 1 is steel twisted-line tension-force detection module, and 2 is steel strand wires elongation detection modules, and 3 is load-on module, and 4 are
Wireless collection analyzes system module, and 5 is oil pressure Intelligent Recognition, control system module, and 6 is strand tapered anchorage, and 7 is the spacing dress of intermediate plate
Putting, 8 is single prestress wire, and 9 is strain pressure transducer, and 10 protect cushion block for strain pressure transducer, and 11 are
Front clip type jack, 12 is high precision displacement meter limiting plate, and 13 is high precision displacement meter, and 14 is hydraulic hand-pump, and 15 is oil pipe,
16 analyze system controller for wireless collection, and 17 is connecting line, and 18 is computer terminal, and 19 is limited impression, and 20 amplify for signal
Device, 21 is signal adapter, and 22 is Wireless Transmitter, and 23 is lithium battery, and 24 is wireless network card receptor, and 25 know for oil pressure intelligence
Not, controlling device, 26 is front clip type jack piston, and 27 is front clip type jack oil cylinder, and 28 is oil pressure Intelligent Recognition, control dress
Putting, 29 is oil-feed control valve, and 30 is stop valve, and 31 is hand-hydraulic pump plunger, and 32 is the unidirectional oil path valve of hydraulic hand-pump, and 33 are
Hand-hydraulic oil pumping chamber.B point is stretching force-elongation relation curve flex point, is also that wireless collection analyzes system computerized terminal certainly
Stretch-draw force value point under the dynamic anchor identified.
Detailed description of the invention:
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
The test device of a kind of prestress wire stretching force, mainly includes steel twisted-line tension-force detection module, steel strand wires
Elongation detection module, load-on module, wireless collection analyzes system module, oil pressure Intelligent Recognition, control system module.Concrete bag
Include intermediate plate stopping means, strain pressure transducer, high precision displacement meter, front clip type jack, hydraulic hand-pump, wireless collection
Analyze system controller, oil pressure Intelligent Recognition, control device, computer terminal.
Intermediate plate stopping means passes single prestress wire, acts on strand tapered anchorage and on strand tapered anchorage
Intermediate plate without directly effect, limited location groove on intermediate plate stopping means, excessive in order to the abjection amount preventing intermediate plate.
Strain pressure transducer passes single prestress wire, before measuring clip type jack and intermediate plate stopping means it
Between pressure.
High precision displacement meter is fixed on front clip type jack side, by the limiting plate amount of front clip type jack front end anchor ring
The overhang of clip type jack piston before surveying, obtains the elongation of steel strand wires indirectly.
Front clip type jack is pressurizeed to apply active force by hydraulic hand-pump.
Wireless collection analysis system controller is in real time, high frequency gathers strain pressure transducer, high precision displacement measurement tries
Data, and transmit digital signal by built-in Wireless Transmitter；Described computer terminal receives numeral by wireless network card receptor
Signal, generation real time imaging.
Oil pressure Intelligent Recognition, control device can identify that oil pressure increment, current clip type jack piston move ahead suddenly automatically
When causing oil pressure moment to be reduced, it controls oil-feed control valve and closes oil-feed oil circuit, sends buzzing warning, automatically terminates to load.
Feasible in order to ensure test device, its working condition that need to meet is:
The active length that exposes of prestress wire should be greater than 30cm, it is ensured that front clip type jack can be to revealed section steel strand wires
Implement effectively clamping；Prestressed pore passage should not carry out mud jacking operation, and otherwise test device will lose efficacy.
The steel twisted-line tension-force detection module of test device is worked by strain pressure transducer, its compact conformation, peace
Dress is convenient, it is only necessary to through steel strand wires so that it is active force is uniformly born at two ends；It is highly sensitive, can identify 1N active force, protects
Stretching force accuracy of detection under card anchor；Its range is 250KN, meets steel twisted-line tension-force test request；Its comprehensive stability is good, no
The most influenced by ambient temperature.
The steel strand wires elongation detection module of test device is worked by high precision displacement meter, and its sensitivity is 0.01mm,
Range 100mm, meets accuracy of detection and the range of steel strand wires elongation.
The load-on module manually hydraulic pump of test device and the work of front clip type jack, hydraulic hand-pump is to front cassette
Jack pressurization is to realize revealed section steel strand wires are clamped and applied active force, and hydraulic hand-pump can be real by the uniform velocity pressing operation
Existing uniform load, loading procedure controllability is good, also can slow down loading velocity when reaching and estimating stretching force under anchor, not only improve anchor
Lower stretching force accurately identify and can guarantee that detection safety；The portable easy operation of front clip type jack, front clip type jack front end anchor
Limiting plate is set on ring, the overhang of clip type jack piston before being surveyed by high precision displacement metering, indirectly obtain steel strand wires
Elongation.
The wireless collection of stretch-draw force test device is analyzed system module and is analyzed system controller work by wireless collection, its
Integrated wireless dynamic strain measuring analyzes system.Strain pressure transducer and high precision displacement meter transmit pressure and shift simulation
Signal, analogue signal is amplified through signal amplifier, is converted to digital signal, digital signal by signal converter by analogue signal
Wire transmission analyzes system controller to wireless collection, is sent wireless for digital signal by built-in Wireless Transmitter, and computer is eventually
Hold and receive digital signal by wireless network card receptor.
Wireless collection is analyzed system module and is applied to connect up loaded down with trivial details experimental field dynamic strain measurement, passes in test process
Defeated wireless signal data, receive wireless signal by computer terminal, and testing crew can keep certain distance with test site, effectively
Ensure test safety；Its compact, it is convenient for carrying, built-in high-capacity lithium battery, test site non-transformer can be met and power；Adopt
Sample frequency is high, Minimum sample rate 10HZ, the highest sample frequency 1000HZ.Can realize steel twisted-line tension-force and elongation high frequency
Gather, catch precision high；Its tool height real-time function, matching computer terminal can realize the Real-time Collection to wireless signal data,
In real time display, real-time storage, analyze in real time, meet the test site analyzing and processing instant, various to testing data.
Stretch-draw force test device oil pressure Intelligent Recognition, control system module are worked by oil pressure Intelligent Recognition, control device,
Can automatically identify that oil pressure increment, current clip type jack piston move ahead suddenly when causing oil pressure moment to be reduced, it controls oil-feed
Control valve closes oil-feed oil circuit, sends buzzing warning, automatically terminates to load.Closing oil-feed oil circuit causes stretching force to diminish suddenly,
Intermediate plate can not be departed from steel strand wires, therefore steel strand wires will not be produced secondary and crush, it is to avoid prestressing force is tied by detection
The damage that structure produces.
As it is shown in figure 1, stretch-draw force test device under prestressing force strand tapered anchorage anchor of the present invention, specifically include that steel strand wires are opened
Pull force calculation module 1, steel strand wires elongation detection module 2, load-on module 3, wireless collection analyzes system module 4, oil pressure intelligence
Identification, control system module 5.In steel twisted-line tension-force detection module 1 containing intermediate plate stopping means 7, strain pressure transducer 9,
Strain pressure transducer protection cushion block 10；Steel strand wires elongation detection module 2 containing high precision displacement meter limiting plate 12, in high precision
Displacement meter 13；Load-on module 3 is containing front clip type jack 11, hydraulic hand-pump 14, oil pipe 15；Wireless collection analyzes system module 4
Containing strain pressure transducer 9, high precision displacement meter 13, signal amplifier 20, signal converter 21, Wireless Transmitter 22, lithium
Battery 23, wireless network card receptor 24, computer terminal 18；Oil pressure Intelligent Recognition, control system module 5 are lived containing front clip type jack
Plug 26, front clip type jack oil cylinder 27, oil pressure Intelligent Recognition, control device 28, oil-feed control valve 29, stop valve 30, manual liquid
Press pump plunger 31, the unidirectional oil path valve of hydraulic hand-pump 32, hand-hydraulic oil pumping chamber 33.
As in figure 2 it is shown, described strain pressure transducer protection cushion block 10, strain pressure transducer 9 sequentially pass through list
Root prestress wire 8, strain pressure transducer protection cushion block 10 and strain pressure transducer 9 uniform contact.In high precision
Displacement meter 13 is fixed on front clip type jack 11 side, measures front card by the limiting plate 12 of front clip type jack 11 front end anchor ring
The overhang of formula jack 11 piston, obtains the elongation of steel strand wires indirectly.Front clip type jack 11 is through single prestress steel
Twisted wire 8, its head contacts good with strain pressure transducer protection cushion block 10 and presss from both sides single prestress wire 8 revealed section
Hold.Hydraulic hand-pump 14 is connected with front clip type jack 11 by oil pipe 15.Strain pressure transducer 9 and high precision displacement meter
13 analyze system controller 16 by connecting line 17 with wireless collection is connected.Wireless collection is analyzed system controller 16 and is launched wireless
Data signal, computer terminal 18 is by computer wireless network interface card receiving radio data signal.
As it is shown on figure 3, described intermediate plate stopping means 7 is through single prestress wire 8, act on strand tapered anchorage 6
And to the intermediate plate on strand tapered anchorage 6 without directly effect, limited location groove 19 on described intermediate plate stopping means 7, in order to prevent folder
The abjection amount of sheet is excessive.Many prestress wires can be clamped on strand tapered anchorage 6, successively it is tested.
As shown in Figure 4, described stretch-draw force test device wireless collection analysis system module workflow is: strain-type pressure
Sensor 9 and high precision displacement meter 13 transmit pressure and shift simulation signal, and analogue signal is amplified through signal amplifier 20, passed through
Signal converter 21 is converted to digital signal by analogue signal, and digital signal wire transmission analyzes system controller to wireless collection
16, wireless collection is analyzed system controller and is powered by lithium battery 23, by built-in Wireless Transmitter 22, digital signal is wireless
Sending, computer terminal 18 receives digital signal by wireless network card receptor 24.
As it is shown in figure 5, described stretch-draw force test device oil pressure Intelligent Recognition, control system module workflow are: manually
Hydraulic pump plunger 31 is cassette thousand before the unidirectional oil path valve of hydraulic hand-pump 32 is by hydraulic oil press-in in hand-hydraulic oil pumping chamber 33
Jin top oil cylinder 27, before hydraulic oil turnover, clip type jack oil cylinder 27 oil circuit controls switch by oil-feed control valve 29, stop valve 30,
Before in front clip type jack oil cylinder 27, hydraulic oil promotes, clip type jack piston 26 applies active force.Front clip type jack oil cylinder 27
Inside it is disposed with oil pressure Intelligent Recognition, controls device 28, it is possible to automatically identify oil pressure increment, before current clip type jack piston is unexpected
When row causes oil pressure moment to be reduced, it controls oil-feed control valve 29 and closes oil-feed oil circuit, sends buzzing warning, automatically terminates to add
Carry.
As Figure 1-5, at the uniform velocity pressing hydraulic hand-pump 14 realizes uniform load, and hydraulic hand-pump 14 controls front cassette thousand
Jin top 11 clamps and applies active force to single prestress wire 8 revealed section, and strain pressure transducer 9 gathers pressure letter
Number, high precision displacement meter 13 gathers displacement signal, and wireless collection analyzes system module 4 and oil pressure Intelligent Recognition, control system mould
Block 5 synchronous averaging, digital data transmission to computer terminal 18, generate real time imaging, automatically identify, export stretch-draw force value under anchor.
As shown in Figure 6, the test device to test of a kind of prestress wire stretching force obtains stretching force-elongation relation song
Line tetra-characteristic points Han O, A, B, C, O-A section is the initial chink stage eliminating anchored end and loading end anchorage with structure, section A-B
For single prestress wire 8 revealed section stretching force increase the stage, under B point single prestress wire 8 anchor stretching force with expose
When section stretching force is equal, if continuing stretch-draw, the intermediate plate of strand tapered anchorage 6 can be drawn out, again can be to single prestressing force during anchoring
8 two clampings of steel strand wires, cause damage.But before described stretch-draw force test device, clip type jack 11 there is oil pressure intelligence to know
Not, device 25 is controlled, it is possible to automatically identifying oil pressure increment, current clip type jack piston 26 moves ahead suddenly and causes oil pressure moment to be dropped
Time low, it controls oil-feed control valve 29 and closes oil-feed oil circuit, and then causes stretching force to diminish suddenly so that intermediate plate can not twist with steel
Line departs from, therefore steel strand wires will not be produced secondary and crush, it is to avoid the damage that prestressed structure is produced by detection.Stretch-draw
Power-elongation relation curve occurs that flex point, computer terminal 18 automatically identify, export stretch-draw force value under anchor.
The present invention proposes the test device of stretching force under a kind of strand tapered anchorage anchor, can realize prestress wire anchor
Lossless, the high precision test of lower stretching force, has wide promotion prospect.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. a stretch-draw force test device under prestressing force strand tapered anchorage anchor, is characterized in that: include that coaxially connected steel strand wires are opened
Pull force calculation parts and steel strand wires elongation detection part, pressure-loaded parts apply active force, oil pressure to prestress wire
Identification module identification also records the change of described active force；Described steel twisted-line tension-force detection part detection prestress wire exists
Pressure changeable is answered, the strain elongation of described steel strand wires elongation detection part detection prestress wire under active force；
Described steel twisted-line tension-force detection part, steel strand wires elongation detection part and oil pressure identification module are by each self-monitoring number
Process according to sending into analyzer-controller, be calculated the stretching force-elongation relation curve of prestress wire.
2. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 1, is characterized in that: described steel
Twisted wire stretching force detection part, including intermediate plate stopping means, strand tapered anchorage, pressure transducer and protection cushion block, described intermediate plate
Formula anchorage is fixed on intermediate plate stopping means front end, and intermediate plate stopping means passes single prestress wire, acts on clip type anchor
Without directly effect, pressure transducer and protection cushion block uniform contact on tool and to the intermediate plate on strand tapered anchorage, and it is arranged at folder
Sheet stopping means rear end, prestress wire runs through inside pressure transducer and protection cushion block.
3. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 1, is characterized in that: described steel
Twisted wire elongation detection part, including front clip type jack, displacement meter and limiting plate, described front clip type jack front end is fixed on
On protection cushion block, described displacement meter measures stretching of front clip type jack piston by the limiting plate of front clip type jack front end anchor ring
Output.
4. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 3, is characterized in that: before described
Clip type jack passes single prestress wire, and its head contacts with strain pressure transducer protection cushion block, and to single
The revealed section of prestress wire clamps.
5. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 1, is characterized in that: described pressure
Power loading component, including hydraulic pump, hydraulic pump applies pressure by oil pipe clip type jack forward.
6. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 5, is characterized in that: described liquid
Press pump includes hydraulic pump plunger, and hydraulic oil in hydraulic pump oil pocket is pressed into by described hydraulic pump plunger through the unidirectional oil path valve of hydraulic pump
Front clip type jack oil cylinder, before in front clip type jack oil cylinder, hydraulic oil promotes, clip type jack piston applies active force.
7. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 6, is characterized in that: before described
Clip type jack oil path in oil cylinder be laid with control valve, stop valve respectively into and out of oil circuit.
8. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 6, is characterized in that: before described
It is disposed with oil pressure identification module in clip type jack oil cylinder, automatically identifies oil pressure increment, before current clip type jack piston is unexpected
When row causes oil pressure moment to be reduced, it controls oil-feed control valve and closes oil-feed oil circuit, sends buzzing warning, automatically terminates to load.
9. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 1, is characterized in that: described steel
Pressure and the shift simulation signal of collection are sent into amplifier and are entered by twisted wire stretching force detection part, steel strand wires elongation detection part
Row amplifies, and is converted to digital signal by signal converter by analogue signal, and digital signal wire transmission is to analyzer-controller.
10. stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor as claimed in claim 1, is characterized in that: described
Analyzer-controller passes through lithium battery power supply, is sent wireless for digital signal by built-in Wireless Transmitter, and nothing is passed through in computer terminal
Gauze card receiver receives digital signal, generates real time imaging, stretch-draw force value under display anchor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610474275.8A CN106153233B (en) | 2016-06-24 | 2016-06-24 | Tensioning force test device under a kind of prestressing force strand tapered anchorage anchor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610474275.8A CN106153233B (en) | 2016-06-24 | 2016-06-24 | Tensioning force test device under a kind of prestressing force strand tapered anchorage anchor |
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| CN106153233B CN106153233B (en) | 2018-11-30 |
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| CN110440970A (en) * | 2019-08-12 | 2019-11-12 | 四川升拓检测技术股份有限公司 | A kind of system and method positioned at jack head end test anchor lower prestress |
| CN110879112A (en) * | 2019-10-16 | 2020-03-13 | 山东高速济莱城际公路有限公司 | Water bath circulating temperature sensing characteristic testing device and method for intelligent steel strand |
| CN112067220A (en) * | 2020-09-10 | 2020-12-11 | 泰安泰烁岩层控制科技有限公司 | Clamping piece type anchorage vibration test device and application thereof |
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| CN114411561A (en) * | 2022-02-11 | 2022-04-29 | 中交第二公路工程局有限公司 | Prestress tension control system and method based on voice and image recognition technology |
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| CN110440970A (en) * | 2019-08-12 | 2019-11-12 | 四川升拓检测技术股份有限公司 | A kind of system and method positioned at jack head end test anchor lower prestress |
| CN110879112B (en) * | 2019-10-16 | 2021-08-17 | 山东高速济莱城际公路有限公司 | Water bath circulating temperature sensing characteristic testing device and method for intelligent steel strand |
| CN110879112A (en) * | 2019-10-16 | 2020-03-13 | 山东高速济莱城际公路有限公司 | Water bath circulating temperature sensing characteristic testing device and method for intelligent steel strand |
| CN112067220B (en) * | 2020-09-10 | 2021-11-16 | 泰安泰烁岩层控制科技有限公司 | Clamping piece type anchorage vibration test device and application thereof |
| CN112067220A (en) * | 2020-09-10 | 2020-12-11 | 泰安泰烁岩层控制科技有限公司 | Clamping piece type anchorage vibration test device and application thereof |
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| CN114411561A (en) * | 2022-02-11 | 2022-04-29 | 中交第二公路工程局有限公司 | Prestress tension control system and method based on voice and image recognition technology |
| CN114411561B (en) * | 2022-02-11 | 2023-05-12 | 中交第二公路工程局有限公司 | Control method of prestress tension control system based on voice and image recognition technology |
| CN114485380A (en) * | 2022-02-24 | 2022-05-13 | 应急管理部国家自然灾害防治研究院 | Indoor simulation self-checking device of component type drilling strain gauge |
| CN114624119A (en) * | 2022-05-12 | 2022-06-14 | 常州市国祥起重机械有限公司 | Steel wire rope strength detection device for crane |
| CN114812907A (en) * | 2022-06-30 | 2022-07-29 | 四川交达预应力工程检测科技有限公司 | Whole hole detection system and detection method of porous anchor |
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