CN109668793A - Simulate the device and method of Dynamic And Static Loads Under Concrete spray-up mechanical property - Google Patents
Simulate the device and method of Dynamic And Static Loads Under Concrete spray-up mechanical property Download PDFInfo
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- CN109668793A CN109668793A CN201910018034.6A CN201910018034A CN109668793A CN 109668793 A CN109668793 A CN 109668793A CN 201910018034 A CN201910018034 A CN 201910018034A CN 109668793 A CN109668793 A CN 109668793A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0694—Temperature
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Abstract
The invention discloses a kind of device and methods for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property, it is related to concrete simulation experimental technique field, including fire disaster simulation system, stress loading system, cooling system and monitoring system, fire disaster simulation system includes firewall, mobile bracket, burner and temperature controller；Stress loading system includes three-phase stress loading device and support ball, and cooling system includes water pump, radiator, cooling fan and compensation bucket；Fire disaster simulation system simulated fire operating condition, the stress of stress loading system call interception concrete spray coating component, cooling system adjusts stress loading system temperature, monitoring system is monitored and analyzes to the temperature of concrete spray coating component, stress and strain, and utilizes the unit simulation fire process and the method for studying concrete spray coating mechanical property.The present invention realizes the purpose of the variation of simulation concrete spray-up mechanical property in case of fire, in addition also has structure simple, easy to operate, tests the advantages that flexible.
Description
Technical field
The present invention relates to concrete to simulate experimental technique field, it is especially a kind of for simulating under the conditions of Dynamic And Static Loads and
The device of concrete spray coating mechanical property under fire working, and the method tested using the device.
Background technique
Mechanical property of the concrete structure under fire is the major issue of current Concrete Mechanical Properties research, concrete
It is related to most civil engineering structure.However it is less for the correlation test equipment of concrete spray coating structure at present, to study coagulation
Internal temperature and mechanical property variation and supporting effect and the safety of concrete of the native spray-up structure under fire working,
Need to design relevant testing equipment.Existing concrete test equipment can only study mechanical property of the concrete after fire,
Become including concrete crushing strength, bending strength, the load-deformation curve etc. after fire, but for concrete under high temperature action
During the entire process of shape is destroyed, the research of the mechanical property of concrete spray coating structure is also very insufficient；In addition existing concrete structure
Part fire test equipment is huge, needs to put into a large amount of manpower and material resources；The sensor for testing concrete inner structure stress is usual
The high temperature of unbearable fire increases internal temperature variation and internal stress variation of the concrete component during by fire
The difficulty of research, therefore influence of the Dynamic And Static Loads condition to its mechanical property for research concrete under fire working, need
Design corresponding concrete test equipment.
Summary of the invention
For the technical problem for solving the Changeement difficulty of concrete spray coating mechanical property in case of fire, the present invention is mentioned
A kind of device and method for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property is supplied, specific technical solution is as follows.
A kind of device for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property, including fire disaster simulation system, stress
Loading system, cooling system and monitoring system, fire disaster simulation system include firewall, mobile bracket, burner and temperature control
Device；Stress loading system includes three-phase stress loading device and support ball；Cooling system includes water pump, radiator and compensation water
Bucket；Concrete spray coating component is arranged above firewall, and inlet channel and discharge flue are provided on firewall；Mobile branch is set up
It sets between firewall, on mobile bracket, temperature controller is connected with burner for burner setting；Three-phase stress loading device
Three pressure heads be pressed respectively against on concrete spray coating component, support ball is provided between concrete spray coating component and firewall；It dissipates
Hot device is connected with three pressure heads of three-phase stress loading device.
Preferably, burner is provided with multiple fire jetting holes, is provided with cover board above burner；It is provided on firewall more
The upper layer of inlet channel is arranged in a inlet channel and discharge flue, discharge flue.
Preferably, monitoring system includes data processor, and data processor receives and records thermocouple and stress monitoring
The monitoring data of device；Concrete spray coating component inside is provided with thermocouple, is provided with monitor for stress on pressure head.
It may further be preferable that thermocouple is in layered arrangement, thermocouple is grid-shaped in layer to be evenly arranged, concrete spray
Thickness in layer component every 10~20cm arranges one layer of thermocouple；Spacing of the thermocouple in layer is 15~25cm.
Preferably, three-phase stress loading device includes seaming chuck, left pressure head and right pressure head, seaming chuck and concrete spray coating
Support ball is provided between component.
A kind of method of concrete spray coating mechanical property under simulated fire operating condition utilizes a kind of above-mentioned simulation sound to carry
The device of lotus Under Concrete spray-up mechanical property, step include:
A. concrete spray coating component is made, production concrete is specifically included, is laid with thermocouple, makes standard concrete spray-up
Monitor for stress is arranged in component；
B. it places on concrete spray coating component to firewall, adjusts the position of three-phase stress loading device pressure head；
C. burner is opened by temperature controller, while utilizes the position of mobile bracket adjustment burner；It opens simultaneously
Cooling system cools down to three-phase stress loading device；
D. it is pressurizeed by three-phase stress loading device to concrete spray coating component, while simultaneously by monitoring system registers
Analyze the temperature change and stress situation of concrete spray coating component.
Preferably, the size of concrete spray coating component is specially a length of 140cm, width 70cm, a height of 20cm；Temperature control
The temperature range of device control processed is 0~1000 DEG C.
It preferably, include: the mobile adjustment of mobile support vertical using the position of mobile bracket adjustment burner in step C
The distance of burner and concrete spray coating component；Or the mobile mobile burner that adjusts of support level is to concrete spray coating component
Heating location；Or fixed mobile bracket keeps burner heating location constant.
Preferably, carrying out pressurization to concrete spray coating component by three-phase stress loading device in step D includes: left pressure
Head and right pressure head apply stable pressure；Or left pressure head and right pressure head are gradually increased pressure；Or left pressure head and right pressure head are applied
Add stable pressure, seaming chuck applies stable pressure；Or left pressure head and right pressure head are gradually increased pressure, seaming chuck gradually increases
Big pressure.
The beneficial effect comprise that
(1) device for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property simulates fire using fire disaster simulation system
Calamity operating condition, by the stress of stress loading system call interception concrete spray coating component, cooling system adjusts stress loading system temperature,
Monitoring system is monitored and analyzes to the temperature of concrete spray coating component, stress and strain, thus for research concrete spray coating
The variation of mechanical property in case of fire provides reliable test instrument.
(2) it is provided with fire jetting hole on the burner of fire disaster simulation system, guarantees that heating uniformly, facilitates temperature control；Burning
Cover board is provided with above device to facilitate control heating location；It is realized using thermocouple to concrete spray coating component bulk temperature
Monitoring especially arranges the structure of thermocouple, and better monitoring temperature is facilitated to change；Utilize three-phase stress loading device pressure head
The monitor for stress of upper setting realizes the monitoring of stress.
(3) method of the concrete spray coating mechanical property under simulated fire operating condition, using simulation Dynamic And Static Loads under the conditions of mix
The device of solidifying soil spray-up mechanical property, makes concrete spray coating component, carries out heating and pressurized operation, real by different operations
Existing different stress loading conditions, different heating position, different heating temperature also has many advantages, such as easy to operate, tests flexible.
Detailed description of the invention
Fig. 1 is simulation test device structural schematic diagram；
Fig. 2 is firewall the schematic diagram of the section structure；
Fig. 3 is firewall cross section structure schematic diagram；
Fig. 4 is concrete spray coating element structure schematic diagram；
Fig. 5 is concrete spray coating component the schematic diagram of the section structure；
Fig. 6 is concrete spray coating member section structural schematic diagram；
Fig. 7 is burner structure schematic diagram；
Fig. 8 is temperature control curve schematic diagram；
Fig. 9 is the distribution curve of stress of different location at the identical temperature of concrete spray coating component；
In figure: 1- fire disaster simulation system；11- firewall；111- inlet channel；112- discharge flue；113- glass；12-
Mobile bracket；13- burner；14- temperature controller；2- stress loading system；21- three-phase stress loading device；It is pressed on 211-
Head；The left pressure head of 212-；The right pressure head of 213-；22- supports ball；3- cooling system；31- radiator 4- monitors system；41- thermocouple；
42- data processor；5- concrete spray coating component.
Specific embodiment
In conjunction with shown in Fig. 1 to Fig. 9, a kind of simulation Dynamic And Static Loads Under Concrete spray-up mechanical property provided by the invention
Device and method, specific embodiment is as follows.
Embodiment 1
It is a kind of simulate Dynamic And Static Loads Under Concrete spray-up mechanical property apparatus structure specifically include fire disaster simulation system
System 1, stress loading system 2, cooling system 3 and monitoring system 4,1 simulated fire operating condition of fire disaster simulation system, stress loading system
The stress of 2 adjustment concrete spray coating components, cooling system 3 adjust stress loading system temperature, monitor system 4 to concrete spray coating
The temperature of component, stress and strain are monitored and analyze, and are to study concrete spray coating mechanical property in case of fire
Variation provides reliable test instrument.Wherein, as shown in Figure 1 to Figure 2, fire disaster simulation system includes firewall 11, mobile branch
Frame 12, burner 13 and temperature controller 14；Stress loading system 2 includes three-phase stress loading device 21 and support ball 22；It is cold
But system 3 includes water pump, radiator 31 and compensation bucket.As shown in Figures 3 to 5, concrete spray coating component 5 is arranged in firewall
11 tops, are provided with inlet channel 111 and discharge flue 112 on firewall 11, firewall 11 piled up using the double-deck refractory brick and
At one of side uses transparent glass 113 resistant to high temperature, and the inside and outside wall using fire-resistant heat insulating material in firewall applies
It smears.Mobile bracket 12 is arranged between firewall 11, and the setting of burner 13 is on mobile bracket 12, temperature controller 14 and burning
Device 13 is connected, and mobile 12 vertical bar of bracket is moved up and down using telescopic rod, and cross bar is moved horizontally using screw mechanism.
Three-phase stress loading device 21 includes seaming chuck 211, left pressure head 212 and right pressure head 213, and seaming chuck and concrete spray
Support ball 22 is provided between layer component, support ball 22 is hemispherical, detachable to install, therefore the present apparatus can carry out 3 points it is curved
Song test.Three pressure heads of three-phase stress loading device 21 are pressed respectively against on concrete spray coating component, 5 He of concrete spray coating component
Support ball 22 is provided between firewall 11, radiator 31 is connected with three pressure heads of three-phase stress loading device 21, to be
Pressure head and three-phase stress loading device 21 cool down, and guarantee that the monitor for stress being arranged on pressure head will not be damaged by high temperature.
Burner 13 is provided with multiple fire jetting holes, and cover board is provided with above burner 13, and fire jetting hole guarantees homogeneous heating, lid
Plate can control the area of heating, realize the control of temperature, better simulated fire.Burner 13 uses stably and controllable liquid
Liquefied oil gas is provided with multiple intensive tiny fire jetting holes, to guarantee the uniform of heating, entirely as burner body on burner 13
Temperature-rise period is by procedure auto-control, and maximum temperature is up to 1100 DEG C, and heating rate is up to 200 DEG C/min, temperature control curve
As shown in figure 8, having many advantages, such as easy to operate, safe and efficient, combustion product cleaning.Multiple inlet channels are provided on firewall
111 and discharge flue 112, discharge flue 112 upper layer of inlet channel is set, is just burnt to put.
Monitoring system 4 includes data processor 42, and data processor receives and record thermocouple and monitor for stress
Monitoring data.Concrete spray coating component 5 is internally provided with thermocouple 41, is provided with monitor for stress on pressure head.Thermocouple 41
In layered arrangement, thermocouple 41 is grid-shaped in layer to be evenly arranged, and facilitates better monitoring temperature to change, concrete spray coating structure
One layer of thermocouple 41 is arranged every the thickness of 10~20cm in part 5, and spacing of the thermocouple 41 in layer is 15~25cm, passes through heat
The temperature of the monitoring concrete spray coating component each position of galvanic couple 41.
A kind of method of concrete spray coating mechanical property under simulated fire operating condition utilizes a kind of above-mentioned simulation sound to carry
The device of lotus Under Concrete spray-up mechanical property, step include:
A. concrete spray coating component 5 is made, production concrete is specifically included, is laid with thermocouple 41, makes standard concrete
Monitor for stress is arranged in spray-up component 5.The size of concrete spray coating component 5 specifically can be designed as a length of 140cm, width is
70cm, a height of 20cm are more suitable for laboratory test under the size condition and test data are facilitated to record, first in advance will be hot in production
Galvanic couple 41 is fixed by preset shape combination, is inserted into concrete before concrete does not solidify.
B. it places on concrete spray coating component 5 to firewall, adjusts the position of 21 pressure head of three-phase stress loading device；
C. burner 13 is opened by temperature controller, while utilizes the position of mobile bracket adjustment burner 13；Temperature
The temperature range of controller control is 0~1000 DEG C.Cooling system is opened at the same time to carry out three-phase stress loading device 21
Cooling, prevents from damaging three-phase stress loading device or monitor for stress in temperature-rise period.
Position using mobile bracket adjustment burner includes: that the mobile adjustment burner of mobile support vertical and concrete spray
The distance of layer component；Or the mobile mobile burner that adjusts of support level is to the heating location of concrete spray coating component；Or it is solid
Surely moving bracket keeps burner heating location constant.
D. it is pressurizeed by three-phase stress loading device to concrete spray coating component, while simultaneously by monitoring system registers
Analyze the temperature change and stress situation of concrete spray coating component.
Carrying out pressurization to concrete spray coating component by three-phase stress loading device includes: that left pressure head and right pressure head apply surely
Fixed pressure；Or left pressure head and right pressure head are gradually increased pressure；Or left pressure head and right pressure head apply stable pressure, upper pressure
Head applies stable pressure；Or left pressure head and right pressure head are gradually increased pressure, seaming chuck is gradually increased pressure.
Realize that different stress loading conditions, different heating position, different heating temperature are gone back by different operations to method
Have many advantages, such as easy to operate, tests flexible.
Embodiment 2
For the device of further instruction simulation Dynamic And Static Loads Under Concrete spray-up mechanical property provided by the invention
And method, to this by taking different location fire source at identical temperature is to the temperature of concrete spray coating component and the test of stress influence as an example
Invention is described in detail.
It is a kind of simulate Dynamic And Static Loads Under Concrete spray-up mechanical property apparatus structure specifically include fire disaster simulation system
System 1, stress loading system 2, cooling system 3 and monitoring system 4.Wherein, fire disaster simulation system 1 includes firewall 11, mobile branch
Frame 12, burner 13 and temperature controller 14；Stress loading system 2 includes three-phase stress loading device 21 and support ball 22；It is cold
But system 3 includes water pump, radiator 31 and compensation bucket.Concrete spray coating component 5 is arranged above firewall 11, mobile bracket
12 are arranged between firewall 11, and on mobile bracket 12, temperature controller 14 is connected the setting of burner 13 with burner 13, move
Dynamic 12 vertical bar of bracket is moved up and down using telescopic rod, and cross bar is moved horizontally using screw mechanism.Three-phase stress loading device 21 wraps
Seaming chuck 211, left pressure head 212 and right pressure head 213 are included, support ball is provided between seaming chuck 211 and concrete spray coating component 5
22, support ball 22 is hemispherical.Three pressure heads of three-phase stress loading device 21 are pressed respectively against on concrete spray coating component 5, are mixed
It is provided between solidifying soil spray-up component 5 and firewall 11 and supports ball 22, three of radiator 31 and three-phase stress loading device 21
Pressure head is connected.
Burner 13 is provided with multiple fire jetting holes, is provided with cover board above burner 13.It is provided on firewall 11 multiple
The upper layer of inlet channel is arranged in inlet channel 111 and discharge flue 112, discharge flue 112, and one of side uses resistance to height
The transparent glass 113 of temperature, the overall dimensions that firewall 11 forms are specially a length of 140cm, width 70cm, a height of 70cm.Monitoring
System 4 includes data processor, and data processor 42 receives and records the monitoring data of thermocouple and monitor for stress.Coagulation
The size of native spray-up component 5 specifically can be designed as a length of 140cm, width 70cm, a height of 20cm, in concrete spray coating component 5
Portion is provided with thermocouple 41, is provided with monitor for stress on pressure head.Thermocouple 41 is in layered arrangement, and thermocouple 41 is in layer
It is latticed to be evenly arranged, facilitate better monitoring temperature to change.Specifically thermocouple 41 is in dot matrix in concrete spray coating component 5
Distribution, between the upper and lower away from for 10cm；Between left and right away from for 20cm；Spacing is 20cm in the middle part of front and back, and front and back outermost layer is away from adjacent thereto
One layer of spacing is 15cm.
A kind of method of concrete spray coating mechanical property under simulated fire operating condition utilizes a kind of above-mentioned simulation sound to carry
The device of lotus Under Concrete spray-up mechanical property, specific steps include:
A. concrete spray coating component is made, production concrete is specifically included, is laid with thermocouple, makes standard concrete spray-up
Monitor for stress is arranged in component.The size of concrete spray coating component specifically can be designed as a length of 140cm, width 70cm, height
For 20cm, first thermocouple is fixed in advance by preset shape combination in production, concrete is inserted into before concrete does not solidify
In, it is used after concrete solidifies completely.
B. it places on concrete spray coating component to firewall, adjusts the position of three-phase stress loading device pressure head, pressure head pressure
Tight concrete spray coating component, pressure head apply certain pressure.
C. burner is opened by temperature controller, while mobile bracket adjusts the slave concrete spray coating component of burner
Side is moved to the other side, and the heat source of burner is during which kept to stablize.Cooling system is opened at the same time to three-phase stress loading
Device cools down, and prevents from damaging three-phase stress loading device or monitor for stress in temperature-rise period.
D. the pressure to concrete spray coating component is kept by three-phase stress loading device, while passes through monitoring system registers
And analyze the temperature change of concrete spray coating component and stress situation using the concrete spray coating component leftmost side as origin obtains phase
With the stress changing curve of different location under high temperature, as shown in figure 9, the temperature integrated analysis to concrete spray coating component.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (9)
1. a kind of device for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property, which is characterized in that including fire disaster simulation
System, stress loading system, cooling system and monitoring system, the fire disaster simulation system include firewall, mobile bracket, burning
Device and temperature controller；The stress loading system includes three-phase stress loading device and support ball；The cooling system includes
Water pump, radiator and compensation bucket；Concrete spray coating component is arranged above firewall, and it is logical that air inlet is provided on the firewall
Road and discharge flue；The mobile bracket is arranged between firewall, burner setting on mobile bracket, temperature controller and
Burner is connected；Three pressure heads of the three-phase stress loading device are pressed respectively against on concrete spray coating component, concrete spray coating
Support ball is provided between component and firewall；The radiator is connected with three pressure heads of three-phase stress loading device.
2. a kind of device for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property according to claim 1, special
Sign is that the burner is provided with multiple fire jetting holes, is provided with cover board above burner；It is provided on the firewall multiple
The upper layer of inlet channel is arranged in inlet channel and discharge flue, the discharge flue.
3. a kind of device for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property according to claim 1, special
Sign is, the monitoring system includes data processor, and data processor receives and record thermocouple and monitor for stress
Monitoring data；The concrete spray coating component inside is provided with thermocouple, is provided with monitor for stress on pressure head.
4. a kind of device for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property according to claim 3, special
Sign is, the thermocouple is in layered arrangement, and thermocouple is grid-shaped in layer to be evenly arranged, in concrete spray coating component every
The thickness of 10~20cm arranges one layer of thermocouple；Spacing of the thermocouple in layer is 15~25cm.
5. a kind of device for simulating Dynamic And Static Loads Under Concrete spray-up mechanical property according to claim 1, special
Sign is, the three-phase stress loading device includes seaming chuck, left pressure head and right pressure head, the seaming chuck and concrete spray coating structure
Support ball is provided between part.
6. the method for the concrete spray coating mechanical property under a kind of simulated fire operating condition, using described in any one of claim 1 to 5
A kind of simulation Dynamic And Static Loads Under Concrete spray-up mechanical property device, step includes:
A. concrete spray coating component is made, production concrete is specifically included, is laid with thermocouple, makes standard concrete spray-up structure
Monitor for stress is arranged in part；
B. it places on concrete spray coating component to firewall, adjusts the position of three-phase stress loading device pressure head；
C. burner is opened by temperature controller, while utilizes the position of mobile bracket adjustment burner；Open simultaneously cooling
System cools down to three-phase stress loading device；
D. it is pressurizeed by three-phase stress loading device to concrete spray coating component, while passing through monitoring system registers and analyzing
The temperature change and stress situation of concrete spray coating component.
7. the method for the concrete spray coating mechanical property under a kind of simulated fire operating condition according to claim 6, feature
It is, the size of the concrete spray coating component is specially a length of 140cm, width 70cm, a height of 20cm；The temperature controller
The temperature range of control is 0~1000 DEG C.
8. the method for the concrete spray coating mechanical property under a kind of simulated fire operating condition according to claim 6, feature
Be, in the step C using the position of mobile bracket adjustment burner include: the mobile adjustment burner of mobile support vertical and
The distance of concrete spray coating component；Or the mobile mobile burner that adjusts of support level is to the heating position of concrete spray coating component
It sets；Or fixed mobile bracket keeps burner heating location constant.
9. the method for the concrete spray coating mechanical property under a kind of simulated fire operating condition according to claim 6, feature
It is, carrying out pressurization to concrete spray coating component by three-phase stress loading device in the step D includes: left pressure head and right pressure
Head applies stable pressure；Or left pressure head and right pressure head are gradually increased pressure；Or left pressure head and right pressure head apply it is stable
Pressure, seaming chuck apply stable pressure；Or left pressure head and right pressure head are gradually increased pressure, seaming chuck is gradually increased pressure.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537255A (en) * | 2020-05-06 | 2020-08-14 | 上海市建筑科学研究院有限公司 | True fire test device and method for flexural member |
| CN113624179A (en) * | 2021-07-21 | 2021-11-09 | 袁松 | Different thickness steel mesh mould concrete wall contrast detects uses crack control testing arrangement |
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| CN113624179A (en) * | 2021-07-21 | 2021-11-09 | 袁松 | Different thickness steel mesh mould concrete wall contrast detects uses crack control testing arrangement |
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Application publication date: 20190423 |