CN109916748A - A kind of building structural element fire and impact real-time coupling test system - Google Patents
A kind of building structural element fire and impact real-time coupling test system Download PDFInfo
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- CN109916748A CN109916748A CN201910242376.6A CN201910242376A CN109916748A CN 109916748 A CN109916748 A CN 109916748A CN 201910242376 A CN201910242376 A CN 201910242376A CN 109916748 A CN109916748 A CN 109916748A
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Abstract
The present invention discloses a kind of building structural element fire and impacts real-time coupling test system, including restraint system, temperature elevation system, impact system and Control & data acquisition system；Restraint system provides component two sides boundary condition, applies preload；Temperature elevation system drives high temperature furnace, controls and feeds back temperature-rise period；Impact system controls and feeds back height of the fall, determines and feeds back furnace body position, release is dropped hammer；Control & data acquisition system is acquired for data, coordination constraint, heating, impact system.The collaborative work that the present invention passes through each system, the real-time coupling of fire and impact can be achieved, fire occurs for real simulation engineering, building structural element such as steel core concrete column etc. absorbs impact or explodes the process for causing actually to collapse, and is accurately assessed for the receiving jolt capacity of building structural element in case of fire；It is full-automatic during test to carry out, avoid accidental error, test result authenticity, accuracy and high reliablity.
Description
Technical field
The present invention relates to building structural element performance detection field, concretely relate to a kind of building structural element fire with
Impact the pilot system coupled in real time.
Background technique
Impacting the safety of structure research coupled with fire has extensive research background and eager Research Requirements.Under high temperature
The shock resistance of building structural element not only considers its fire resistance, while being also to measure it safety when fire to occur and can
It is the important reference indicator that building structural element designs and manufactures by the important parameter of degree.
Because (impact belongs to dynamic load(loading) to the completely different property of two class load, and load terminates in several milliseconds；Fire belongs to standard
Basic load, load usually require dozens of minutes or longer), there is not been reported so far for the test of the two coupling.Such as steel pipe
Concrete column bears the operating condition hit or exploded ability in other words in the event of fire, to steel core concrete column, at present still
Lack rationally accurate evaluation measures.
Summary of the invention
In view of the above technical problems, the present invention proposes a kind of building structural element fire and impacts real-time coupling test system,
The pilot system can real simulation engineering fire occurs, building structural element absorbs impact or explodes the mistake for causing actually to collapse
Journey is accurately assessed for the receiving jolt capacity of building structural element in case of fire.
The adopted technical solution is that:
A kind of building structural element fire and real-time coupling test system is impacted, including restraint system, temperature elevation system, impact system
System and Control & data acquisition system；
The restraint system includes fixing end, sliding adjustable frames, charging assembly and hydraulic package one, one end of test specimen
It is connect with fixing end, the other end of test specimen is connect with sliding adjustable frames, and sliding adjustable frames are by charging assembly and use
It is connected in the hydraulic package one for applying axis pressure；
The temperature elevation system includes the high temperature furnace for heating up to test specimen and the traction for driving high temperature furnace to be moved forward and backward
Component, the high temperature furnace are in cuboid, including front door plate, rear plate, upper plate, lower plate, closing panel one and end
Cover board two, connection forms fixed part jointly for upper plate, lower plate, rear plate and closing panel two, sets on closing panel two
It is equipped with the notch for test specimen insertion, the top margin of front door plate is hinged by one side of hinge and upper plate, front door plate and end
The connection of portion's cover board one forms movable part, and movable part can be opened and closed relative to fixed part；
It is provided with front door at the top of upper plate and opens motor and fixed pulley one, front door opens the shaft and steel of motor
One end of cord connects, and the other end of wirerope is connect after bypassing fixed pulley one with the lower part of front door plate；
It is provided with heat-preservation cotton on the inside of the front door plate, rear plate, upper plate and lower plate, in the inside of heat-preservation cotton
It is provided with heating tape, heating tape is connected with control switch；
The traction component includes hydraulic package two, and hydraulic package two includes double-action jack two, two and of hydraulic power unit
Oil pipe, double-action jack two are connect by oil pipe with hydraulic power unit two, and double-action jack is horizontally disposed, double-action jack
Cylinder body connect with the rigid side walls being arranged on rear side of high temperature furnace, the piston rod end of double-action jack and the back plate of high temperature furnace
Block connection pushes high temperature furnace to move horizontally by double-action jack；The lower plate bottom of high temperature furnace is provided with furnace body support,
Sliding rail is provided with below furnace body support, being provided at the footing of furnace body support can move back and forth along sliding rail
Idler wheel；
The impact system is located at the top position of the fixed test specimen of restraint system, including drops hammer, the top dropped hammer with
Energization electromagnet mutually adsorbs, the connection of one end of electromagnet upper end and steel strand wires, the other ends of steel strand wires around after fixed pulley two with
Motor connection is promoted, the electromagnet also connects with electric wire；It is vertically arranged in the two sides dropped hammer for the rigid of guiding of dropping hammer
Property channel steel；
The Control & data acquisition system include signal wire, load transducer one, load transducer two, rangefinder one,
Rangefinder two, thermocouple one, thermocouple two, infrared tube, tachymeter, acceleration transducer, high-speed camera and displacement meter；
The load transducer one and displacement meter are arranged on charging assembly, are respectively used to the axial compressive force of measurement test specimen
And displacement；The rangefinder two is arranged on upper plate, for measuring the height dropped hammer；The thermocouple one and thermocouple two are equal
The inside of high temperature furnace is set, and thermocouple two is in contact with test specimen, thermocouple one and thermocouple two are connect with signal wire,
Middle thermocouple one is used to measure the temperature in burner hearth, and thermocouple two is used to measure the temperature of surface of test piece；The rangefinder one is set
Set on the rear plate of high temperature furnace, for when withdrawing high temperature furnace measure high temperature furnace rear plate and rigid side walls between away from
From；The infrared tube includes the transmitting terminal matched and receiving end, and the bottom of rigid channel steel is arranged in the transmitting terminal of infrared tube
The upper plate of high temperature furnace and the outside of front door plate is arranged in portion, the receiving end of infrared tube, and infrared tube in release for falling
Whether monitoring high temperature furnace has been recalled in place before hammer；The lower inside of rigid channel steel is arranged in the tachymeter, drops hammer for measuring
Speed before hitting test specimen；The bottom dropped hammer is arranged in the load transducer two, for measuring hitting in the knockout process that drops hammer
Hit power；The top dropped hammer is arranged in the acceleration transducer, for measuring the acceleration during hitting test specimen that drops hammer, and with
This inverse impact force, and the impact force measured with load transducer two is compared and is corrected.
The present invention passes through the collaborative work of restraint system, temperature elevation system, impact system and Control & data acquisition system,
The real-time coupling of fire and impact can be achieved, fire occurs for real simulation engineering, and building structural element, which is absorbed impact or exploded, to be caused
The process actually collapsed has filled up test blank.
High temperature furnace of the present invention can couple in real time with impact system, i.e., withdrawn after high temperature furnace heating reaches predetermined value
Moment complete impact test, prevent because exposure too long caused by temperature reduce phenomenon.High temperature furnace by the arrangement to heating tape, or
Person says that the selection to heating tape enables, and may be implemented uniformly to heat, and (if only top heats, only lower part is heated, edge for non-homogeneous heating
Span realizes temperature gradient variation etc.), to adapt to different engineering requirements.
In the present invention Control & data acquisition system can centralized control heating temperature, apply axle power and sling height, can
Realize fire and impact coupling in real time, it is full-automatic during test to carry out, avoid accidental error, test result authenticity, standard
True property and high reliablity.
Preferably, the fixing end includes fixing end lower base, fixing end upper header and fixture one, fixing end lower part
Pedestal is fixed in rigid support one by high-strength bolt, and rigid support one is including bottom plate, top plate and is connected to bottom plate and top plate
Between vertical gripper shoe, offer several in parallel on top plate to the strip groove that adjusts position fixed ends；Fixture
One upper part is embedded in fixing end upper header, and the lower part of fixture one is embedded in fixing end lower base, upper header and
Lower base is connected by high-strength bolt, and one end of test specimen is held in fixture one；
The sliding adjustable frames include two, two sliding end lower base, sliding end upper header, fixture sliding grooves
With a rod iron, sliding end lower base is provided with perforative hole, and two sliding grooves are arranged in sliding end lower base
Two sides are emptied in the middle part of sliding groove, are fixed in the second rigid support by high-strength bolt, rod iron pass through sliding end lower base and
Two sliding grooves；The upper part of fixture two is embedded in upper header, and the lower part of fixture two is embedded in lower base, upper header
It is connected with lower base by high-strength bolt, the other end of test specimen is held in fixture two；
The elasticity charging assembly includes two channel steels, a spring, a H profile steel and a cover sheet, H profile steel
A part is by high-strength bolt and slides adjustable frames and is connected, and the both ends of spring respectively connect a channel steel, and cover sheet is by two
A channel steel and spring all cover, and another part of H profile steel is covered, and cover sheet passes through high-strength bolt and the second rigidity branch
Support connection；Two channel steels are referred to as the first channel steel and the second channel steel, spring passes through the first channel steel and load transducer one and H
Fashioned iron is in contact；
The hydraulic package includes double-action jack one, oil pipe and hydraulic power unit one, the cylinder body of double-action jack one
It is connect by high-strength bolt with the second rigid support, the piston rod end of double-action jack one is contacted with the second channel steel, double cropping
It is connect by oil pipe with hydraulic power unit one with jack one.
The present invention designs using the above structure, moderate by rigidity during axis pressure, fire are with real-time coupling test is impacted
Coil component spring axle power is applied to test specimen, in this way, can have sizable decrement in the case of identical axle power, can guarantee to by
Caused by sliding end is mobile " vacancy " is timely supplemented, slide end movement it is excessive when, guarantee spring and sliding end it
Between " do not derail ", thus axle power diminuendo process when the such component of accurate simulation collapses.
Preferably, the rigid channel steel is vertically arranged, and two rigid channel steels being vertically arranged are symmetric, each
A guided way is welded on rigid channel steel, the guided way is laid along the length direction of rigid channel steel, set in the two sides dropped hammer
It is equipped with guide groove compatible with guided way.The present invention using the above structure, can play preferable guiding role to dropping hammer, really
Guarantor drop hammer can vertical forward impact test specimen, reduce test error.
Preferably, it is provided with fixation hole on the sliding groove, is provided with several strips in second rigid support
Groove, the hole size of fixation hole and the equivalent width of strip groove, sliding groove can be fixed on the second rigidity as needed
At the different location of support.
When doing building structural element (one end sliding, one end are fixed) axis pressure, the operating condition that fire couples in real time with impact, sliding
Four bolts hole of lower part are held to decontrol；It is sliding when doing the operating condition that building structural element (both ends are fixed) fire couples in real time with impact
Moved end lower part is fixed in rigid support with four high-strength bolts, it is ensured that test base adapts to different operating condition of test.
The groove is strip, facilitates the adjustment of the fixed position of pedestal, can be drawn with asymmetry at left and right sides of compensation means
The error risen, this is conducive to the systematic error for further reducing experimental rig.
The present invention can flexibly realize whether apply axial force by the pedestal of equipment, to be adapted to Structural Engineering simultaneously
The test requirements document of central sill (no axle power) and column (having axle power).It, can be accurate because there is spring arrangement when carrying out the test of column
Simulation major gene, which is hit, occurs the progressive axle power decrease phenomenon for collapsing corresponding.
Preferably, first rigid support and the second rigid support pass through a number of earth anchorage at rigid bottom
On plate, the stability of pilot system can be further improved, it is easy to disassemble.
The method have the benefit that:
The present invention passes through the collaborative work of restraint system, temperature elevation system, impact system and Control & data acquisition system,
The real-time coupling of fire and impact can be achieved, fire occurs for real simulation engineering, and building structural element such as steel core concrete column etc. is held
It is hit or the process for causing actually to collapse of exploding, it is quasi- to be that the receiving jolt capacity of building structural element in case of fire carries out
True assessment；It is full-automatic during test to carry out, avoid accidental error, test result authenticity, accuracy and reliability
It is high.
Sliding end lower base of the present invention can be fixed in the second rigid support by high-strength bolt, realize what both ends were fixed
Operating condition of test, true reflection occur under fire condition, and building structural element is subjected to impact reflection when load, and the present invention can be real
The operating condition of test of existing multiplicity.
Overall structure of the present invention is simple, compact, and test operation is easy.
Detailed description of the invention
The invention will be further described with specific embodiment with reference to the accompanying drawing:
Fig. 1 is the overall structure diagram of coupling test system of the present invention；
Fig. 2 is the structural schematic diagram of temperature elevation system in coupling test system of the present invention；
Fig. 3 is another angular views of Fig. 2；
Fig. 4 is the principle schematic diagram of temperature elevation system high temperature furnace of the present invention；
Fig. 5 is the structural schematic diagram of impact system in coupling test system of the present invention；
Fig. 6 is the structural schematic diagram of restraint system in coupling test system of the present invention；
Fig. 7 is the structural schematic diagram of fixing end in restraint system of the present invention；
Fig. 8 is the structural schematic diagram that adjustable frames are slided in restraint system of the present invention；
Fig. 9 is the structural schematic diagram of charging assembly and hydraulic package in restraint system of the present invention；
Figure 10 is the work flow diagram of coupling test system of the present invention.
In figure: 1, restraint system；2, temperature elevation system；3, impact system；4, Control & data acquisition system；
1-1, test specimen；1-2, rigid support one；1-3, rigid support two；1-4, fixing end；1-5, sliding adjustable frames；
1-6, charging assembly；1-7, hydraulic package one；1-8, fixing end lower base；1-9, fixing end upper header；1-10, sliding end
Lower base；1-11, sliding end upper header；1-12, fixture one；1-13, fixture two；1-14, spring；1-15, double acting thousand
Jin top one；1-16, hydraulic power unit one；1-17, groove；1-18, sliding groove；1-19, rod iron；1-20, H profile steel；1-21, channel steel；
1-22, cover sheet；1-23, high-strength bolt；
2-1, high temperature furnace；2-2, hydraulic package two；2-3, sliding rail；2-4, furnace body support；2-5, front door plate；2-6,
Plate afterwards；2-7, upper plate；2-8, lower plate；2-9, closing panel one；2-10, closing panel two；2-11, rigid side walls；2-
12, double-action jack two；2-13, hydraulic power unit two；2-14, oil pipe；2-15, control switch；2-16, front door open electricity
Machine；2-17, hinge；2-18, wirerope；2-19, fixed pulley one；
3-1, it drops hammer；
4-1, signal wire；4-2, load transducer one；4-3, rangefinder two；4-4, thermocouple one；4-5, thermocouple two；4-
6, rangefinder one；4-7, infrared tube receiving end；4-8, infrared tube transmitting terminal；4-9, tachymeter；4-10, acceleration sensing
Device；4-11, load transducer two；4-12, high-speed camera；4-13, displacement meter.
Specific embodiment
In conjunction with attached drawing, a kind of building structural element fire and real-time coupling test system is impacted, including restraint system 1, heating
System 2, impact system 3 and Control & data acquisition system 4.
The restraint system 1 includes fixing end 1-4, sliding adjustable frames 1-5, charging assembly 1-6 and hydraulic package one
One end of 1-7, test specimen 1-1 are connect with fixing end, and the other end of test specimen is connect with sliding adjustable frames, slide adjustable frames
It is connect by charging assembly 1-6 with one 1-7 of hydraulic package for applying axis pressure.
The temperature elevation system 2 includes high temperature furnace 2-1 for heating up to test specimen and for driving high temperature furnace to be moved forward and backward
Traction component, the high temperature furnace 2-1 are in cuboid, including front door plate 2-5, rear plate 2-6, upper plate 2-7, lower plate 2-
8, two 2-10 of one 2-9 of closing panel and closing panel, connection is formed jointly for upper plate, lower plate, rear plate and closing panel two
Fixed part, is provided with the notch for test specimen insertion on closing panel two, the top margin of front door plate by hinge 2-17 with
One side of upper plate 2-7 is hinged, and front door plate and the connection of closing panel one form movable part, and movable part can be relative to solid
Fixed part opens and closes.It is provided with front door at the top of upper plate and opens motor 2-16 and one 2-19 of fixed pulley, front door opens electricity
The shaft of machine is connect with one end of wirerope 2-18, and the other end of wirerope 2-18 is around after fixed pulley one and under the plate of front door
Portion's connection.It is provided with heat-preservation cotton on the inside of the front door plate, rear plate, upper plate and lower plate, in the inside of heat-preservation cotton
It is provided with heating tape, heating tape is connected with control switch.Commercial product can be selected in heating tape, and preferably heating tape is by several
Refractory ceramics heating sheet connection composition.In above-mentioned four pieces of heating tapes, the heating temperature of every piece of heating tape can be needed according to test into
Row is freely adjusted.
The traction component includes two 2-2 of hydraulic package, and hydraulic package two includes two 2-12 of double-action jack, hydraulic pump
Stand two 2-13 and oil pipe 2-14, and double-action jack two is connect by oil pipe with hydraulic power unit two, the horizontal cloth of double-action jack
It sets, the cylinder body of double-action jack is connect with the rigid side walls being arranged on rear side of high temperature furnace, the tailpiece of the piston rod of double-action jack
The connection of the rear plate of portion and high temperature furnace pushes high temperature furnace to move horizontally by double-action jack.At the lower plate bottom of high temperature furnace
Portion is provided with furnace body support 2-4, and sliding rail 2-3 is provided with below furnace body support, is arranged at the footing of furnace body support
Having can be along the idler wheel that sliding rail moves back and forth.
The impact system is located at the top position of the fixed test specimen of restraint system, including the 3-1 that drops hammer, the top dropped hammer
Mutually adsorbed with energization electromagnet, the connection of one end of electromagnet and steel strand wires, the other ends of steel strand wires around after fixed pulley two with mention
Lifting motor connection.The electromagnet also connects with electric wire, and another end of electric wire can be connect with electric wire restoring apparatus.What is dropped hammer
Two sides are vertically arranged for the rigid channel steel to guiding of dropping hammer.
The Control & data acquisition system includes signal wire 4-1, one 4-2 of load transducer, two 4-3 of rangefinder, thermoelectricity
On a rare occasion 4-4, two 4-5 of thermocouple, one 4-6 of rangefinder, infrared tube (infrared tube receiving end 4-7, infrared tube transmitting terminal 4-
8), tachymeter 4-9, acceleration transducer 4-10, two 4-11 of load transducer, high-speed camera 4-12 and displacement meter 4-13.Institute
It states load transducer one and displacement meter is arranged on charging assembly, be respectively used to the axial compressive force and displacement of measurement test specimen.Institute
It states rangefinder two to be arranged on upper plate, for measuring the height dropped hammer.The thermocouple one and thermocouple two are arranged at height
The inside of warm furnace, and thermocouple two is in contact with test specimen, thermocouple one and thermocouple two are connect with signal wire, wherein thermocouple
One for measuring the temperature in burner hearth, and thermocouple two is used to measure the temperature of surface of test piece.The rangefinder one is arranged in high temperature
The distance between rear plate and rigid side walls on the rear plate of furnace, for measuring high temperature furnace when withdrawing high temperature furnace.It is described red
It include outside the transmitting terminal matched and receiving end to pipe, the bottom of rigid channel steel is arranged in the transmitting terminal of infrared tube, infrared right
The upper plate of high temperature furnace and the outside of front door plate is arranged in the receiving end of pipe, and infrared tube is used to monitor before release is dropped hammer high
Whether warm furnace has been recalled in place.When infrared tube receiving end, 4-7 can receive the signal that infrared tube transmitting terminal 4-8 is issued,
Illustrate that high temperature furnace is recalled in place not yet；Illustrate that high temperature furnace has been withdrawn from, and can be discharged and be dropped hammer when conversely, can not receive signal.Institute
The lower inside that rigid channel steel is arranged in tachymeter is stated, for measuring the speed before hitting test specimen of dropping hammer.The load transducer
Two are arranged in the bottom dropped hammer, for measuring the impact force in the knockout process that drops hammer.The acceleration transducer setting is being dropped hammer
Top, for measuring the acceleration during hitting test specimen that drops hammer, and with this inverse impact force, and with load transducer two survey
The impact force obtained is compared and is corrected.
The present invention passes through the collaborative work of restraint system, temperature elevation system, impact system and Control & data acquisition system,
The real-time coupling of fire and impact can be achieved, fire occurs for real simulation engineering, and building structural element, which is absorbed impact or exploded, to be caused
The process actually collapsed has filled up test blank.
In the present invention Control & data acquisition system can centralized control heating temperature, apply axle power and sling height, can
Realize fire and impact coupling in real time, it is full-automatic during test to carry out, avoid accidental error, test result authenticity, standard
True property and high reliablity.
As to further design of the invention, the fixing end includes fixing end lower base 1-8, fixing end top top
1-9 and one 1-12 of fixture is covered, fixing end lower base is fixed on one 1-2 of rigid support by high-strength bolt.Rigid support one
Including bottom plate, top plate and connection vertical gripper shoe between the bottom panel and top panel, offered in parallel on top plate several to
Adjust the strip groove of position fixed ends.The upper part of fixture one is embedded in fixing end upper header, the lower part of fixture one
It is embedded in fixing end lower base, upper header is connected with lower base by high-strength bolt, and one end of test specimen is held on fixture
In one.
The sliding adjustable frames include sliding end lower base 1-10, sliding end upper header 1-11, two 1- of fixture
13, a two sliding groove 1-18 and rod iron 1-19.Sliding end lower base is provided with perforative hole, and two sliding grooves distinguish cloth
It sets and is emptied in the middle part of the two sides of sliding end lower base, sliding groove, is fixed in the second rigid support by high-strength bolt, rod iron
Across sliding end lower base and two sliding grooves.The upper part of fixture two is embedded in upper header, in the lower part of fixture two
Embedded in lower base, upper header is connected with lower base by high-strength bolt, and the other end of test specimen is held in fixture two.
The elasticity charging assembly includes two channel steel 1-21, a spring 1-14, a H profile steel 1-20 and a protection
A part of cover board 1-22, H profile steel 1-20 are connected by high-strength bolt with sliding adjustable frames, and the both ends of spring 1-14 respectively connect
A channel steel is connect, cover sheet all covers two channel steels and spring, and another part of H profile steel is covered, cover sheet
It is connected by high-strength bolt and the second rigid support.Two channel steels are referred to as the first channel steel and the second channel steel, spring passes through
First channel steel and one 4-2 of load transducer are in contact with H profile steel.The hydraulic package includes one 1-15 of double-action jack, oil
The cylinder body of pipe and one 1-16 of hydraulic power unit, double-action jack one are connect by high-strength bolt with the second rigid support, double acting
The piston rod end of jack one is contacted with the second channel steel, and double-action jack one is connect by oil pipe with hydraulic power unit one.
The present invention designs using the above structure, moderate by rigidity during axis pressure, fire are with real-time coupling test is impacted
Coil component spring axle power is applied to test specimen, in this way, can have sizable decrement in the case of identical axle power, can guarantee to by
Caused by sliding end is mobile " vacancy " is timely supplemented, slide end movement it is excessive when, guarantee spring and sliding end it
Between " do not derail ".
Further, the rigid channel steel is vertically arranged, and two rigid channel steels being vertically arranged are symmetric, often
A guided way is welded on one rigid channel steel, the guided way is laid along the length direction of rigid channel steel, in two to drop hammer
Side is provided with guide groove compatible with guided way.The present invention using the above structure, can play preferable guiding work to dropping hammer
With, it is ensured that drop hammer can vertical forward impact test specimen, reduce test error.
Further, it is provided with fixation hole on the sliding groove, is provided with several strips in second rigid support
The equivalent width of shape groove 1-17, the hole size of fixation hole and strip groove, sliding groove can be fixed on the as needed
At the different location of two rigid supports.
When doing building structural element (one end sliding, one end are fixed) axis pressure, the operating condition that fire couples in real time with impact, sliding
Four bolts hole of lower part are held to decontrol；It is sliding when doing the operating condition that building structural element (both ends are fixed) fire couples in real time with impact
Moved end lower part is fixed in rigid support with four high-strength bolts, it is ensured that test base adapts to different operating condition of test.
The groove is strip, facilitates the adjustment of the fixed position of pedestal, can be drawn with asymmetry at left and right sides of compensation means
The error risen, this is conducive to the systematic error for further reducing experimental rig.
The present invention can flexibly realize whether apply axial force by the pedestal of equipment, to be adapted to Structural Engineering simultaneously
The test requirements document of central sill (no axle power) and column (having axle power).It, can be accurate because there is spring arrangement when carrying out the test of column
Simulation major gene, which is hit, occurs the progressive axle power decrease phenomenon for collapsing corresponding.
Further, first rigid support and the second rigid support pass through a number of earth anchorage rigid
On property bottom plate, the stability of pilot system can be further improved, it is easy to disassemble.
Building structural element fire of the present invention and the real-time coupling test system of impact include restraint system, temperature elevation system, impact
System and control system, the function of each system and mutual control planning are summarized as follows:
The function of restraint system is mainly to provide component two sides boundary condition, applies preload.The function of temperature elevation system
High temperature furnace is mainly driven, controls and feeds back temperature-rise period.The function of impact system mainly controls and feeds back height of the fall, sentences
Determine and feed back furnace body position, obtain Control & data acquisition system command, release is dropped hammer.The function master of Control & data acquisition system
If controlling data acquisition, coordination constraint, heating, impact system.
Arrange that restraint system includes load transducer, is integrated on charging assembly about overall sensor.Temperature elevation system
It is several including thermocouple, it is respectively placed in surface of test piece and furnace interior；Infrared tube one arranges, and transmitting terminal is placed in rigid channel steel bottom
Portion, receiving end are placed in furnace body top plate and front door plate；Rangefinder is placed in plate after furnace body；Controlling door opener, (front door is opened
Motor, wirerope and fixed pulley one), it is placed in plate on furnace body.Impact system includes acceleration and velocity sensor.Control sum number
Include foil gauge, high speed camera, displacement meter etc. according to acquisition system, coordination constraint, heating, impact system route.
When specific works, restraint system issues target load instruction, and measurement, feedback load apply process.Temperature elevation system
Temprature control unit issues target temperature instruction, measurement, feedback temperature signal；Brake portion issues high temperature furnace shift instruction, instead
Present high temperature furnace position.Impact system issues target impact speed command, issues the trigger command that drops hammer, and feeds back furnace body position.
Control & data acquisition system of the present invention includes data collection system I and data collection system II, data acquisition system
Acquisition of the system I mainly in the incipient stage to information such as temperature changes in brace pre axial force, temperature-rise period；Data collection system II is main
If the acquisition to the data such as impact force, acceleration, speed, displacement meter and high-speed camera during shock.
The course of work of the invention approximately as:
The first step, on-test, input target axle power, temperature and impact velocity, root by Control & data acquisition system
Height of the fall is calculated according to impact velocity；
Second step fixes at the both ends of test specimen to be tested with fixing end and sliding adjustable frames respectively；
Third step opens front door and opens motor, and front door opens motor and pulls front door plate by wirerope, makes front door
Plate upwardly opens；
4th step opens hydraulic package two, pushes high temperature furnace along sliding rail to test specimen side by double-action jack two
Sliding, passes through the distance between plate and rigid side walls after one Real-time Feedback high temperature furnace of rangefinder；When furnace body reaches target position
Afterwards, test specimen is placed in just in the notch of closing panel two of high temperature furnace, is arranged thermocouple one and thermocouple two, is then passed through front door
Plate opens motor control front door plate decentralization closure；
5th step, control electromagnet are in energized state, and the top dropped hammer mutually is adsorbed with energization electromagnet, and opens promotion
Motor promotes motor by steel strand wires for drop hammer lifting to object height, the height dropped hammer is measured and fed back by rangefinder two；
6th step applies axle power to target value to test specimen, control switch is then turned on, by adding by hydraulic package one
The torrid zone is heated up to high temperature furnace, is measured and is fed back the temperature in burner hearth by thermocouple one in temperature-rise period, surveyed by thermocouple two
The temperature of amount and feedback surface of test piece；
7th step opens motor again by front door when high temperature furnace is warming up to target temperature, and after held for some time
Front door plate is upwardly opened, high temperature furnace recession is then controlled by hydraulic package two, closes control switch at the same time, is heated
Band stops heating；
8th step monitors whether high temperature furnace has been recalled in place by infrared tube, after determining that high temperature furnace has been recalled in place,
Electromagnet power-off is controlled, release is dropped hammer；
9th step is dropped hammer the speed before hitting test specimen by tachymeter measurement, is hit by the measurement of load transducer two
Impact force in journey is dropped hammer the acceleration during hitting test specimen by acceleration transducer measurement, and with this inverse impact force,
And the impact force measured with load transducer two is compared and is corrected；It is recorded and is shown in real time by high-speed camera and impacted
The image information of journey；
Tenth step, by Control & data acquisition system acquisition storing data, removal is dropped hammer, and removes test specimen, off-test.
During present invention test when keeping the gradual change of test specimen axle power, the real-time coupling of fire with impact can be realized
It closes, thus, it is possible to occur under fire condition than more actually reacting, building structural element is subjected to impact reflection when load.Examination
It is carried out full-automaticly during testing, has both brought operational convenience, in turn avoided caused by human factor " accidentally accidentally
Difference ".
It takes or uses for reference prior art and can be realized in the part that do not addressed in aforesaid way.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of building structural element fire and the real-time coupling test system of impact, it is characterised in that: including restraint system, heating system
System, impact system and Control & data acquisition system；
The restraint system includes fixing end, sliding adjustable frames, charging assembly and hydraulic package one, one end of test specimen and solid
The other end of fixed end connection, test specimen is connect with sliding adjustable frames, and sliding adjustable frames pass through charging assembly and are used to apply
The hydraulic package one of axis pressure is added to connect；
The temperature elevation system includes high temperature furnace for heating up to test specimen and the traction component for driving high temperature furnace to be moved forward and backward,
The high temperature furnace is in cuboid, including front door plate, rear plate, upper plate, lower plate, closing panel one and closing panel
Two, connection forms fixed part jointly for upper plate, lower plate, rear plate and closing panel two, is provided on closing panel two
For the notch of test specimen insertion, the top margin of front door plate is hinged by one side of hinge and upper plate, front door plate and end cover
The connection of plate one forms movable part, and movable part can be opened and closed relative to fixed part；
It is provided with front door at the top of upper plate and opens motor and fixed pulley one, front door opens the shaft and wirerope of motor
One end connection, the other end of wirerope after fixed pulley one with the lower part of front door plate around connecting；
It is provided with heat-preservation cotton on the inside of the front door plate, rear plate, upper plate and lower plate, is all provided on the inside of heat-preservation cotton
It is equipped with heating tape, heating tape is connected with control switch；
The traction component includes hydraulic package two, and hydraulic package two includes double-action jack two, hydraulic power unit two and oil pipe,
Double-action jack two is connect by oil pipe with hydraulic power unit two, and double-action jack is horizontally disposed, the cylinder of double-action jack
Body is connect with the rigid side walls being arranged on rear side of high temperature furnace, and the piston rod end of double-action jack and the rear plate of high temperature furnace connect
It connects, pushes high temperature furnace to move horizontally by double-action jack；The lower plate bottom of high temperature furnace is provided with furnace body support, in furnace
Sliding rail is provided with below body support frame, being provided at the footing of furnace body support can be along the rolling that sliding rail moves back and forth
Wheel；
The impact system is located at the top position of the fixed test specimen of restraint system, including drops hammer, the top dropped hammer and energization
Electromagnet mutually adsorbs, the connection of one end of electromagnet upper end and steel strand wires, the other ends of steel strand wires around after fixed pulley two with promotion
Motor connection, the electromagnet also connect with electric wire；It is vertically arranged in the two sides dropped hammer for the rigid channel to guiding of dropping hammer
Steel；
The Control & data acquisition system includes signal wire, load transducer one, load transducer two, rangefinder one, ranging
Instrument two, thermocouple one, thermocouple two, infrared tube, tachymeter, acceleration transducer, high-speed camera and displacement meter；
The load transducer one and displacement meter are arranged on charging assembly, are respectively used to axial compressive force and the position of measurement test specimen
It moves；The rangefinder two is arranged on upper plate, for measuring the height dropped hammer；The thermocouple one and thermocouple two are respectively provided with
In the inside of high temperature furnace, and thermocouple two is in contact with test specimen, and thermocouple one and thermocouple two are connect with signal wire, wherein heat
Galvanic couple one is used to measure the temperature in burner hearth, and thermocouple two is used to measure the temperature of surface of test piece；The setting of rangefinder one exists
The distance between rear plate and rigid side walls on the rear plate of high temperature furnace, for measuring high temperature furnace when withdrawing high temperature furnace；Institute
Stating infrared tube includes the transmitting terminal matched and receiving end, and the bottom of rigid channel steel is arranged in the transmitting terminal of infrared tube, red
The receiving end of pipe is arranged in outside the upper plate of high temperature furnace and the outside of front door plate, infrared tube before release is dropped hammer for supervising
Whether pyrometry furnace has been recalled in place；The lower inside of rigid channel steel is arranged in the tachymeter, for measuring shock examination of dropping hammer
Speed before part；The bottom dropped hammer is arranged in the load transducer two, for measuring the impact force in the knockout process that drops hammer；Institute
It states acceleration transducer and the top dropped hammer is set, for measuring the acceleration during hitting test specimen that drops hammer, and with this inverse
Impact force, and the impact force measured with load transducer two is compared and is corrected.
2. a kind of building structural element fire according to claim 1 and the real-time coupling test system of impact, it is characterised in that:
The fixing end includes fixing end lower base, fixing end upper header and fixture one, and fixing end lower base passes through high-strength spiral shell
Bolt is fixed in rigid support one, and rigid support one includes bottom plate, the vertical support of top plate and connection between the bottom panel and top panel
Plate offers several to the strip groove that adjusts position fixed ends in parallel on top plate；The upper partial embedding of fixture one
In fixing end upper header, the lower part of fixture one is embedded in fixing end lower base, and upper header and lower base pass through height
Strength bolt connection, one end of test specimen is held in fixture one；
The sliding adjustable frames include two, two sliding end lower base, sliding end upper header, fixture sliding grooves and one
A rod iron, sliding end lower base are provided with perforative hole, and two sliding grooves are arranged in the two sides of sliding end lower base,
It empties in the middle part of sliding groove, is fixed in the second rigid support by high-strength bolt, rod iron passes through sliding end lower base and two
Sliding groove；The upper part of fixture two is embedded in upper header, and the lower part of fixture two is embedded in lower base, and upper header is under
Portion's pedestal is connected by high-strength bolt, and the other end of test specimen is held in fixture two；
It is described elasticity charging assembly include two channel steels, a spring, a H profile steel and a cover sheet, one of H profile steel
It point by high-strength bolt and slides adjustable frames and is connected, the both ends of spring respectively connect a channel steel, and cover sheet is by two slots
Steel and spring all cover, and another part of H profile steel is covered, and cover sheet is connected by high-strength bolt and the second rigid support
It connects；Two channel steels are referred to as the first channel steel and the second channel steel, spring passes through the first channel steel and load transducer one and H profile steel
It is in contact；
The hydraulic package includes double-action jack one, oil pipe and hydraulic power unit one, and the cylinder body of double-action jack one passes through
High-strength bolt is connect with the second rigid support, and the piston rod end of double-action jack one is contacted with the second channel steel, double acting thousand
Jin top one is connect by oil pipe with hydraulic power unit one.
3. a kind of building structural element fire according to claim 1 and the real-time coupling test system of impact, it is characterised in that:
The rigidity channel steel is vertically arranged, and two rigid channel steels being vertically arranged are symmetric, and is welded on each rigid channel steel
There is a guided way, the guided way is laid along the length direction of rigid channel steel, is provided with and guided way phase in the two sides dropped hammer
The guide groove of adaptation.
4. a kind of building structural element fire according to claim 1 and the real-time coupling test system of impact, it is characterised in that:
It is provided with fixation hole on the sliding groove, several strip grooves, the hole of fixation hole are provided in second rigid support
The equivalent width of hole size and strip groove, sliding groove can be fixed on the different location of the second rigid support as needed
Place.
5. a kind of building structural element fire according to claim 4 and the real-time coupling test system of impact, it is characterised in that:
First rigid support and the second rigid support pass through a number of earth anchorage on stiff baseplate.
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