CN106370415A - Automatically-controlled reciprocating load loading device for axial force-bearing component and using method thereof - Google Patents
Automatically-controlled reciprocating load loading device for axial force-bearing component and using method thereof Download PDFInfo
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- CN106370415A CN106370415A CN201610934191.8A CN201610934191A CN106370415A CN 106370415 A CN106370415 A CN 106370415A CN 201610934191 A CN201610934191 A CN 201610934191A CN 106370415 A CN106370415 A CN 106370415A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention, which belongs to the steel structure building field, particularly relates to an automatically-controlled reciprocating load loading device for an axial force-bearing component and a using method thereof. The automatically-controlled reciprocating load loading device comprises an outer frame fixing device provided with a test piece loading device for loading on a to-be-tested piece; and a data acquisition system is connected to the test piece loading device. A second cross beam and a third cross beam are arranged on the outer frame fixing device. The a test piece loading device consists of a horizontal actuator, a horizontal load sensor and a connecting rod; the horizontal actuator and the horizontal load sensor are connected with the data acquisition system; the left end of the horizontal actuator is fixedly connected with the second cross beam and the right end is connected with the left end of the to-be-tested piece by a first connecting hinge; and the right end of the to-be-tested piece is connected with the horizontal load sensor fixedly. The horizontal load sensor and the connecting rod are connected in a relative rotation mode; and the connecting rod is hinged to the third beam by a second connection hinge. The horizontal actuator, the to-be-tested piece, the horizontal load sensor, and the connecting rod are arranged coaxially and horizontally. The automatically-controlled reciprocating load loading device having a simple structure can be transported and placed conveniently.
Description
[technical field]
The invention belongs to steel building field is and in particular to one kind automatically controls the loading of uniaxial force component Cyclic Loading
Device and using method.
[background technology]
In field of steel structure, uniaxial force component is widely used in various load steel structures, such as roof truss, bracket, tower
In frame, rack, various types of plane such as reticulated shell or space lattice formula system and support system.Its static(al) and Hysteresis Behavior
Quality has a significant impact to integrally-built anti-seismic performance, and accurately the static(al) of test uniaxial force component and Hysteresis Behavior are to reflection
The deformation behaviour of structure, Stiffness Deterioration and energy expenditure aspect are significant.
The research of the static(al) to axle center primary structure member and Hysteresis Behavior aspect in the past is all mainly the Specialty Experiment in colleges and universities
Room is carried out, and because experiment charger is not easy to mobile and transports, there is certain limitation, at the construction field (site) with some
Component cannot be tested under specific environment.At present, a kind of portable axle center primary structure member of specialty is seldom had automatically to load
Device, simultaneously again because uniaxial force component has the initial imperfection such as inital bending and first bias and shortage is laterally propped up accordingly
Support, is easy to make the local failure of component first occur, before overall destruction, to lead to experimental precision and result in loading procedure
It is greatly affected.
[content of the invention]
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, there is provided one kind automatically controls uniaxial force component
Cyclic Loading charger and using method.This device simple structure, is readily transported and lays it is only necessary to the dismounting of local and group
Dress, you can use at the construction field (site) or under some specific environments, can effectively ensure the precision tested simultaneously again.
One kind automatically controls uniaxial force component Cyclic Loading charger, including external frame fixing device, external frame
Frame fixing device is provided with the test specimen charger for treating test block loading, and test specimen charger is connected with data acquisition
System；
External frame fixing device is provided with second cross beam that is detachable and being parallel to each other and the 3rd crossbeam；
Test specimen charger includes horizontal actuator, horizontal load sensor and connecting rod, horizontal actuator and horizontal lotus
Set sensor is connected with data collecting system respectively, and the left end of horizontal actuator is fixedly connected with second cross beam, and right-hand member passes through the
One connecting hinge is connected with the left end of test specimen to be measured, and the right-hand member of test specimen to be measured is fixedly connected with horizontal load sensor, horizontal loading
Sensor is relatively rotated with connecting rod and is connected, and it is hinged with the 3rd crossbeam that connecting rod passes through the second connecting hinge；
Horizontal actuator, test specimen to be measured, horizontal load sensor and connecting rod be coaxial and level.
The right-hand member of described horizontal load sensor is provided with female thread, and the left end of connecting rod is provided with outer with this screw-internal thread fit
Screw thread, horizontal load sensor is relatively rotated by internal and external screw thread with connecting rod and is connected.
Described external frame fixing device is provided with the 4th crossbeam, and the 4th crossbeam is provided with test piece fixing device, and test specimen is solid
Determine device to be used for clamping test specimen to be measured, prevent test specimen to be measured because the factors such as bias occur the outer unstability of plane in loading procedure.
Described test piece fixing device include for clamp test specimen to be measured sliding clamp, two-way leading screw and to be fixed on the 4th horizontal
Connecting plate on beam, insertion on connecting plate opens up swallowtail-shaped slide, the axis opening up direction and test specimen to be measured of swallowtail-shaped slide
Vertically；
Sliding clamp includes symmetrical left sliding clamp and right sliding clamp, and the lower end of sliding clamp is and swallowtail-shaped slide
The slide block that is adapted and being arranged in swallowtail-shaped slide, left sliding clamp and right sliding clamp are connected to left push rod and the right side
Push rod；
The two ends of two-way leading screw are respectively cooperating with being provided with the first attaching nut and the second attaching nut, the first attaching nut and
Second attaching nut is connected with left push rod and right push rod respectively, by rotating two-way leading screw, makes left sliding clamp and right slip clamp
Tool synchronization is towards or away from movement.
Described sliding clamp is arranged on the middle part of test specimen to be measured, and sliding clamp center offers and test specimen cross section to be measured phase
It is adapted for clamping the groove of test specimen to be measured, the axle center of groove is coaxial with test specimen to be measured.
Described external frame fixing device includes the i-shape steel beam cushion cap being arranged side by side, two about i-shape steel beam cushion cap
Side is connected to trapezoid horizontal reaction frame and triangle reaction frame, and the two ends of second cross beam are anti-with trapezoid horizontal side by side respectively
Power frame connects, and the two ends of the 3rd crossbeam are connected with triangle reaction frame side by side respectively, in trapezoidal water on i-shape steel beam cushion cap
It is provided with column between flat reaction frame and triangle reaction frame, between the column of homonymy and trapezoid horizontal reaction frame, pass through first crossbeam
Connect, first crossbeam is parallel with i-shape steel beam cushion cap and upper end that be arranged on column, is connected with the 4th between column side by side
Crossbeam.
Described first crossbeam, second cross beam, the 3rd crossbeam, the 4th crossbeam and column are I shape crossbeam, i shaped steel
Joist support platform, first crossbeam are all setting up and down with the wing plate of the 4th crossbeam, the equal left and right of wing plate of second cross beam, the 3rd crossbeam and column
Setting, the two ends of the 4th crossbeam are connected with the web of column, and the two ends of second cross beam are stood with first on trapezoid horizontal reaction frame
The web of post connects.
It is provided with described trapezoid horizontal reaction frame and prestressed prestressed cable, prestressing force are applied to trapezoid horizontal reaction frame
The upper end of cable wire is connected with the entablature of trapezoid horizontal reaction frame, and lower end is connected with i-shape steel beam cushion cap.
Described data collecting system includes computer, hydraulic oil source, controller and multichannel strain acquirement instrument, and hydraulic oil source leads to
Cross hydraulic oil pipe to be connected with horizontal actuator, the outfan of controller passes through the quad control end with horizontal actuator respectively
And the control end of hydraulic oil source is connected, the outfan of horizontal load sensor is connected with the input of multichannel strain acquirement instrument
Connect, the outfan of multichannel strain acquirement instrument is connected with computer.
A kind of using method automatically controlling uniaxial force component Cyclic Loading charger, when using, including as follows
Step,
Step one, first external frame fixing device is placed on level ground, and by frame mounted externally for second cross beam
In frame fixing device；
Step 2: again the left end of horizontal actuator is fixedly connected with second cross beam, right-hand member passes through the first connecting hinge and treats
The left end of test block connects, and the right-hand member of test specimen to be measured is fixedly connected with horizontal load sensor, horizontal load sensor be connected
Bar relatively rotates connection, and it is hinged with the 3rd crossbeam that connecting rod passes through the second connecting hinge, then by framework mounted externally for the 3rd crossbeam
In fixing device, make horizontal actuator, test specimen to be measured, horizontal load sensor and connecting rod coaxial；
Step 3, more horizontal actuator and horizontal load sensor are connected with data collecting system respectively；
Step 4, when just needing test, controls horizontal actuator to apply horizontal loading to test specimen by data collecting system
Destroy, and the horizontal force in gatherer process and displacement；According to the horizontal displacement at the horizontal force being recorded and horizontal force action point,
Draw the load-displacement curve of test specimen to be measured.
The invention has the following beneficial effects:
The uniaxial force component Cyclic Loading charger that automatically controls of the present invention passes through to arrange external frame fixing device,
By on framing fixture mounted externally for test specimen charger, because external frame fixing device belongs to the dress of Integral movable
Put, hence in so that the present invention is readily transported and lays, by setting second cross beam detachable on outside framing fixture and
3rd crossbeam, the left end of horizontal actuator is fixedly connected with second cross beam, and right-hand member passes through a left side for the first connecting hinge and test specimen to be measured
End connects, and the right-hand member of test specimen to be measured is fixedly connected with horizontal load sensor, and horizontal load sensor is relatively rotated with connecting rod
Connect, connecting rod pass through the second connecting hinge hinged with the 3rd crossbeam, horizontal actuator, test specimen to be measured, horizontal load sensor and
Connecting rod is coaxial, and horizontal actuator and horizontal load sensor are connected with data collecting system respectively；By by second cross beam and
3rd crossbeam and external frame fixing device are set to detachable, are therefore easy to the disassembly and reassembly of the present invention, lead to
Cross be hinged at above-mentioned two it is ensured that horizontal actuator, test specimen to be measured, horizontal load sensor connect after axiality so that
Test specimen to be measured remains two power rod members, is solely subjected to horizontal axis power, by relatively rotating horizontal load sensor with connecting rod
Connecting, when there is slight torsion in loading procedure, can effectively the moment of torsion of generation be uninstalled because this rotation connects,
Avoid test specimen to be measured in loading procedure and be subject to shear stress, interference experiment result；When using, accurate by data collecting system
Horizontal actuator is really controlled to apply horizontal loading.Therefore, solve the static(al) of uniaxial force component and Hysteresis Behavior can only be in height
Defect that the specialized laboratory in school is carried out so that at the construction field (site) with some specific environments under component can be tested,
And can effectively ensure that the precision of test again.
Further, the present invention is by being set to female thread, the left end setting of connecting rod by the right-hand member of horizontal load sensor
With the external screw thread of this screw-internal thread fit, horizontal load sensor relatively rotated by internal and external screw thread with connecting rod and is connected, pass through
Internal and external screw thread structure not only ensure that test specimen to be measured avoids being disturbed by moment of torsion, and, when the length of test specimen to be measured changes
When additionally it is possible to by this internal and external screw thread structure eliminate test specimen to be measured length difference to install impact.
Further, the present invention passes through to arrange the 4th crossbeam on outside framing fixture, setting examination on the 4th crossbeam
Part fixing device, clamps test specimen to be measured by test piece fixing device in loading procedure, is prevented from test specimen to be measured and was loading
Because the factors such as bias occur the outer unstability of plane in journey.
Further, the test piece fixing device of the present invention passes through to arrange the swallow-tail form cunning vertical with the axis of test specimen to be measured
Groove, swallowtail-shaped slide is provided for clamp the sliding clamp of test specimen to be measured, then makes left slip by arranging two-way leading screw
Fixture and right sliding clamp are synchronous to clamp test specimen to be measured towards or away from mobile it is ensured that sliding clamp is clamping test specimen to be measured
Shi Buhui treats test block and produces external force thus interference effect experimental result, meanwhile, in loading procedure, can prevent test specimen to be measured
Because the factors such as bias occur the outer unstability of plane in loading procedure.
Further, the two ends of the i-shape steel beam cushion cap of the external frame fixing device of the present invention are respectively provided with trapezoidal water
Flat reaction frame and triangle reaction frame are it is ensured that integrally-built strength and stiffness.
Further, the present invention is by being work by first crossbeam, second cross beam, the 3rd crossbeam, the 4th crossbeam and column
Font crossbeam, i-shape steel beam cushion cap, first crossbeam are all setting up and down with the wing plate of the 4th crossbeam, second cross beam, the 3rd crossbeam
With all left and right settings of the wing plate of column, the two ends of the 4th crossbeam are connected with the web of column, the two ends of second cross beam and trapezoidal water
The web of the first column on flat reaction frame connects, this design take full advantage of I-steel loading characteristic it is ensured that this
The reasonability of bright overall structure stress.
Further, the present invention is prestressed to the applying of trapezoid horizontal reaction frame by arranging in trapezoid horizontal reaction frame
Prestressed cable, to eliminate the inelastic deformation of cable wire starting stage, the bending resistance that improve trapezoid horizontal reaction frame is with just
Degree, increases its durability.
[brief description]
Fig. 1 is the overall structure diagram of the present invention；
The top view of Fig. 1 (a) present invention；
Fig. 1 (b) is the structural representation of trapezoid horizontal reaction frame in the present invention；
Fig. 1 (c) is the structural representation of intermediate cam shape reaction frame of the present invention；
Fig. 2 is the structural representation of test specimen charger in the present invention；
Fig. 3 is the structural representation of test piece fixing device in the present invention；
Fig. 4 is the structural representation of data collecting system in the present invention；
Wherein, 1- trapezoid horizontal reaction frame, 1-1- first column, 1-2- entablature, 2- prestressed cable, 3- column, 4-
First ground anchor bolt, 5- i-shape steel beam cushion cap, 6- first crossbeam, 7- second ground anchor bolt, 8- triangle reaction frame, 9- first
End plate, 10- high-strength bolt, 11- second cross beam, 11-1- the 3rd crossbeam, 11-2- the 4th crossbeam, the horizontal actuator of 12-, 13- treats
Test block, 14- horizontal load sensor, 15- connecting rod, 16- first connecting hinge, 16-1- second connecting hinge, 17- second end plate,
18- base plate, 19- connecting plate, 19-1- swallowtail-shaped slide, the left sliding clamp of 20-1-, the right sliding clamp of 20-2-, the left push rod of 21-,
The right push rod of 21-1-, the two-way leading screw of 22-, 23- first attaching nut, 23-1- second attaching nut, 24- fixing nut, 25- electricity
Brain, 26- hydraulic oil source, 27- hydraulic oil pipe, 28- quad, 29- controller, 30- multichannel strain acquirement instrument.
[specific embodiment]
Below in conjunction with the accompanying drawings the present invention is described in further detail:
As shown in Figures 1 to 4, the present invention automatically control uniaxial force component Cyclic Loading charger, including outside
Framing fixture, external frame fixing device is provided with the test specimen charger for treating test block 13 loading, and test specimen adds
Carry to put and be connected with data collecting system；
External frame fixing device includes the i-shape steel beam cushion cap 5 being arranged side by side, i-shape steel beam cushion cap 5 left and right sides
It is connected to trapezoid horizontal reaction frame 1 and triangle reaction frame 8, be provided with to trapezoid horizontal counter-force in trapezoid horizontal reaction frame 1
Frame 1 applies prestressed prestressed cable 2, and the upper end of prestressed cable 2 is connected with the entablature 1-2 of trapezoid horizontal reaction frame 1,
Lower end is connected with i-shape steel beam cushion cap 5, and the two ends of second cross beam 11 are connected with trapezoid horizontal reaction frame 1 side by side respectively, the
The two ends of three crossbeam 11-1 are connected with triangle reaction frame 8 side by side respectively, in trapezoid horizontal counter-force on i-shape steel beam cushion cap 5
It is provided with column 3 between frame 1 and triangle reaction frame 8, between the column 3 of homonymy and trapezoid horizontal reaction frame 1, pass through first crossbeam 6
Connect, first crossbeam 6 is parallel with i-shape steel beam cushion cap 5 and upper end that be arranged on column 3, is connected between column 3 side by side
4th crossbeam 11-2；
First crossbeam 6, second cross beam 11, the 3rd crossbeam 11-1, the 4th crossbeam 11-2 and column 3 are I shape crossbeam,
I-shape steel beam cushion cap 5, first crossbeam 6 are all setting up and down with the wing plate of the 4th crossbeam 11-2, second cross beam 11, the 3rd crossbeam
The all left and right settings of the wing plate of 11-1 and column 3, the two ends of the 4th crossbeam 11-2 are connected with the web of column 3, second cross beam 11
Two ends are connected with the web of the first column 1-1 on trapezoid horizontal reaction frame 1；
Test specimen charger includes horizontal actuator 12, horizontal load sensor 14 and connecting rod 15, horizontal actuator 12
It is connected with data collecting system respectively with horizontal load sensor 14, the left end of horizontal actuator is fixing with second cross beam 11 even
Connect, right-hand member is connected with the left end of test specimen 13 to be measured by the first connecting hinge 16, the right-hand member of test specimen 13 to be measured is sensed with horizontal loading
Device 14 is fixedly connected, and the right-hand member of horizontal load sensor 14 is provided with female thread, and the left end of connecting rod 15 is provided with is joined with this female thread
The external screw thread closing, horizontal load sensor 14 is relatively rotated by internal and external screw thread with connecting rod 15 and is connected, and connecting rod passes through second
Connecting hinge 16-1 is hinged with the 3rd crossbeam 11-1；
4th crossbeam 11-2 is arranged on and is provided with test piece fixing device, and test piece fixing device is used for clamping test specimen 13 to be measured,
Prevent test specimen to be measured because the factors such as bias occur the outer unstability of plane in loading procedure；
Test piece fixing device include for clamp test specimen 13 to be measured sliding clamp, two-way leading screw 22 and to be fixed on the 4th horizontal
Connecting plate 19 on beam, insertion on connecting plate 19 opens up swallowtail-shaped slide 19-1, and swallowtail-shaped slide 19-1 opens up direction and treats
The axis of test block 13 is vertical, and sliding clamp is arranged on the middle part of test specimen 13 to be measured, sliding clamp center offer with to be tested
Part 13 cross section is adapted the groove for clamping test specimen to be measured, and the axle center of groove is coaxial with test specimen 13 to be measured；
Sliding clamp includes symmetrical left sliding clamp 20-1 and right sliding clamp 20-2, and the lower end of sliding clamp is and swallow
Slide block that tail shape chute 19-1 is adapted and being arranged in swallowtail-shaped slide 19-1, left sliding clamp 20-1 and right sliding clamp
Left push rod 21 and right push rod 21-1 are connected on 20-2；
The two ends of two-way leading screw 22 are respectively cooperating with being provided with the first attaching nut 23 and the second attaching nut 23-1, and first even
Connected nut 23 and the second attaching nut 23-1 are connected with left push rod 21 and right push rod 21-1 respectively, by rotating two-way leading screw 22,
Make left sliding clamp 20-1 and right sliding clamp 20-2 synchronous towards or away from movement；
Horizontal actuator 12, test specimen to be measured 13, horizontal load sensor 14 and connecting rod 15 be coaxial and level；
Data collecting system includes computer 25, hydraulic oil source 26, controller 29 and multichannel strain acquirement instrument 30, hydraulic oil
Source 26 is connected 12 by hydraulic oil pipe 27 with horizontal actuator, the outfan of controller 29 pass through quad 28 respectively with level
The control end of the control end of actuator 12 and hydraulic oil source 26 is connected, and the outfan of horizontal load sensor 14 should with multichannel
The input becoming Acquisition Instrument 30 is connected, and the outfan of multichannel strain acquirement instrument 30 is connected with computer 25.
The lower end of the trapezoid horizontal reaction frame 1 of the present invention is connected with I shape crossbeam cushion cap 5 by the first ground anchor bolt 4,
Trapezoid horizontal reaction frame 1 upper end is fixedly connected with the left end of first crossbeam 6, passes through high-strength in the right-hand member of first crossbeam 6 and column 3
Bolt 10 is connected and is simultaneously fixedly connected on i-shape steel beam cushion cap 5 by the first ground anchor bolt 4 together, described triangle counter-force
Frame 8 is fixedly connected with i-shape steel beam cushion cap 5 by the second ground anchor bolt 7.
The 4th crossbeam 11-2 of the present invention is fixedly connected with column 3 by end plate, base plate 18 lower surface and the 4th crossbeam 11-
2 welding form entirety, and base plate 18 upper surface is welded with connecting plate 19, and insertion on connecting plate 19 opens up swallowtail-shaped slide 19-1, sliding
Dynamic fixture opens up semi-circular recesses respectively at left and right two ends (i.e. left sliding clamp 20-1, right sliding clamp 20-2), and group is circular
To clamp test specimen 13 to be measured, fixing nut 24 is rotatably connected at the two ends of two-way leading screw groove, treats that sliding clamp clamps and treats
After test block 13, fixing nut 24 is contacted with attaching nut and pretightning force is applied to it, so that sliding clamp stabilization clamp
Tightly test specimen 13 to be measured.
The second cross beam 11 of the present invention passes through high-strength bolt 10 and first end plate 9 and stands with the first of trapezoid horizontal reaction frame 1
Post 1-1 is connected, and the left end of horizontal actuator 12 is connected with second cross beam 11 by the second end plate 17, the right side of horizontal actuator 12
End is connected with test specimen 13 to be measured by end plate and the first connecting hinge 16, and the left end of horizontal load sensor 14 passes through end plate and treats
Test block 13 is connected, and connecting rod right-hand member is connected with the second connecting hinge 16-1 by end plate, and the second connecting hinge 16-1 passes through end plate
It is connected with the 3rd crossbeam 11-1.
It should be understood that the present invention with the citing of round steel pipe component it is not limited in performance test to round steel pipe, lead to
Cross the groove to sliding clamp in test piece fixing device to be processed according to corresponding member section form, you can meet various sections
Face form axle center primary structure member static(al) and the test of Hysteresis Behavior.
The present invention has some beneficial effect following:
1st, the present invention automatically controls uniaxial force component Cyclic Loading charger in concrete operations, using horizontal start
Device 12 and connecting rod 15 carry out loading level load, by computer 25 and the horizontal actuator of controller 29 flexible 12, are loading
During high accuracy control is carried out to the stroke of horizontal actuator 12 by computer 25.
2nd, test specimen 13 to be measured can effectively be clamped by sliding clamp, prevent test specimen 13 to be measured due to inclined in loading procedure
There is the outer unstability of plane in the factors such as the heart；Can be according to the actual size adjusting post 13 of test specimen 13 to be measured and first crossbeam 6
Position, test specimen 13 to be measured is easy to connect with charger simultaneously, and the position that only need to be cut with scissors by mobile link can meet to difference
The test of the uniaxial force component of type.
3rd, all of loaded members can be dismantled and assemble, transport facility, and simple structure, and floor space is little, both
Meet job site or the use requirement of some specific environments, the precision of experiment can be effectively ensured simultaneously again.
The operating process of the present invention is divided into five steps, particularly as follows:
The first step: two i-shape steel beam cushion cap 5 horizontal alignments are placed on the ground, and by trapezoid horizontal reaction frame 1
It is placed on i-shape steel beam cushion cap 5 left side, be connected by the first ground anchor bolt 4, then triangle reaction frame 8 is placed on work
The right side of shaped girder steel cushion cap 5, is connected by the second ground anchor bolt 7；By high-strength bolt 10 by the left end of first crossbeam 6
Be connected with the upper end of the first column 1-1 of trapezoid horizontal reaction frame 1, then by high-strength bolt 10 by the right-hand member of first crossbeam 6 and
The upper end of column 3 connects, and is fixed on together on i-shape steel beam cushion cap 5, by prestressed cable by the first ground anchor bolt 4
2 pairs of trapezoid horizontal reaction frames 1 apply prestressing force；
Second step: by high-strength bolt 10 and end plate 9, the 4th crossbeam 11-2 is fixedly connected on vertical in the middle of two columns 3
On the web of post 3, and two ends are kept to be in same level；And be welded with the edge of a wing upper surface middle of the 4th crossbeam 11-2
One piece of base plate 18 forms an entirety, connecting plate 19 is welded on base plate 18 upper surface, makes the swallowtail-shaped slide on connecting plate 19
1-1 is vertical with the axis of test specimen 13 to be measured, and sliding clamp 20 is arranged symmetrically in swallowtail-shaped slide, when needing to step up steel pipe
When, by rotary fixing screw female contact with attaching nut and pretightning force is applied to it so that sliding clamp clamp to be tested
Part；
3rd step: the two ends of second cross beam 11 are passed through the first of high-strength bolt 10 and end plate and trapezoid horizontal reaction frame 1
Column 1-1 is connected, and the left end of horizontal actuator 12 passes through end plate and two edges of a wing of second cross beam 11 to fix by long anchor pole
Connect, the right-hand member of horizontal actuator 12 is connected with the left end of test specimen 13 to be measured by end plate and the first connecting hinge 16, to be tested
The right-hand member of part 13 passes through end plate and high-strength bolt is connected with the left end of horizontal load sensor 14, the right side of horizontal load sensor 14
End is screwed in by the connecting rod 15 with screw thread and connects, and the right-hand member of connecting rod 15 passes through the second connecting hinge 16-1 and end plate connection,
The end plate connecting on second connecting hinge 16-1 passes through this end plate and two edges of a wing of the 3rd crossbeam 11-1 to fix by long anchor pole
Connect, finally the second I shape crossbeam 11 is connected by high-strength bolt 10 and end plate two ends middle with triangle reaction frame 8；
4th step: hydraulic oil source 26 is connected with horizontal actuator 12 by hydraulic oil pipe 27, the outfan of controller 29 with
The control end of the control end of horizontal actuator 12 and hydraulic oil source 26 is connected by quad 28, horizontal load sensor 14
Outfan be connected with the input of multichannel strain acquirement instrument 30, the outfan of multichannel strain acquirement instrument 30 and computer 25
It is connected and fetch gathered data；
5th step: when needing test, control horizontal actuator 12 to apply horizontal loading by computer 25 and controller 29
To design load, the horizontal addload system control actuator according to experimental program applies Cyclic Loading until test specimen destroys, and passes through
Computer and multichannel strain acquirement instrument gather horizontal force p (t) and displacement s (t) in process of the test；Remembered according in process of the test
Horizontal displacement s (t) at horizontal force p (t) of record and horizontal force action point, draws the load-displacement curve of test specimen to be measured.
Claims (10)
1. one kind automatically controls uniaxial force component Cyclic Loading charger it is characterised in that including the fixing dress of external frame
Put, external frame fixing device is provided with for treating the test specimen charger that test block (13) loads, on test specimen charger
It is connected with data collecting system；
External frame fixing device is provided with second cross beam (11) that is detachable and being parallel to each other and the 3rd crossbeam (11-1)；
Test specimen charger includes horizontal actuator (12), horizontal load sensor (14) and connecting rod (15), horizontal actuator
(12) it is connected with data collecting system respectively with horizontal load sensor (14), the left end of horizontal actuator and second cross beam (11)
Be fixedly connected, right-hand member is connected with the left end of test specimen to be measured (13) by the first connecting hinge (16), the right-hand member of test specimen (13) to be measured with
Horizontal load sensor (14) is fixedly connected, and horizontal load sensor (14) is relatively rotated with connecting rod (15) and is connected, connecting rod
Hinged with the 3rd crossbeam (11-1) by the second connecting hinge (16-1)；
Horizontal actuator (12), test specimen to be measured (13), horizontal load sensor (14) and connecting rod (15) be coaxial and level.
2. one kind according to claim 1 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
The right-hand member of described horizontal load sensor (14) is provided with female thread, and the left end of connecting rod (15) is provided with outer with this screw-internal thread fit
Screw thread, horizontal load sensor (14) is relatively rotated by internal and external screw thread with connecting rod (15) and is connected.
3. one kind according to claim 1 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
Described external frame fixing device is provided with the 4th crossbeam (11-2), and the 4th crossbeam (11-2) is arranged on and is provided with the fixing dress of test specimen
Put, test piece fixing device is used for clamping test specimen to be measured (13), prevent test specimen to be measured because the factors such as bias are sent out in loading procedure
Unstability outside life face.
4. one kind according to claim 3 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
Described test piece fixing device include for clamp test specimen to be measured (13) sliding clamp, two-way leading screw (22) and to be fixed on the 4th horizontal
Connecting plate (19) on beam, the upper insertion of connecting plate (19) opens up swallowtail-shaped slide (19-1), and swallowtail-shaped slide (19-1) opens up
Direction is vertical with the axis of test specimen to be measured (13)；
Sliding clamp includes symmetrical left sliding clamp (20-1) and right sliding clamp (20-2), and the lower end of sliding clamp is and swallow
Slide block that tail shape chute (19-1) is adapted and being arranged in swallowtail-shaped slide (19-1), left sliding clamp (20-1) and right slip
Left push rod (21) and right push rod (21-1) are connected on fixture (20-2)；
The two ends of two-way leading screw (22) are respectively cooperating with being provided with the first attaching nut (23) and the second attaching nut (23-1), and first
Attaching nut (23) and the second attaching nut (23-1) are connected with left push rod (21) and right push rod (21-1) respectively, double by rotation
To leading screw (22), make left sliding clamp (20-1) and right sliding clamp (20-2) synchronization towards or away from movement.
5. one kind according to claim 4 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
Described sliding clamp is arranged on the middle part of test specimen to be measured (13), and sliding clamp center offers and test specimen to be measured (13) cross section phase
It is adapted for clamping the groove of test specimen to be measured, the axle center of groove is coaxial with test specimen to be measured (13).
6. one kind according to claim 1 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
Described external frame fixing device includes the i-shape steel beam cushion cap (5) being arranged side by side, i-shape steel beam cushion cap (5) left and right sides
Be connected to trapezoid horizontal reaction frame (1) and triangle reaction frame (8), the two ends of second cross beam (11) respectively with ladder side by side
Shape horizontal reacting force frame (1) connects, and the two ends of the 3rd crossbeam (11-1) are connected with triangle reaction frame (8) side by side respectively, I-shaped
Column (3), the column of homonymy are provided between trapezoid horizontal reaction frame (1) and triangle reaction frame (8) on section steel beam cushion cap (5)
(3) it is connected by first crossbeam (6) between trapezoid horizontal reaction frame (1), first crossbeam (6) and i-shape steel beam cushion cap (5)
Upper end that is parallel and being arranged on column (3), is connected with the 4th crossbeam (11-2) between column (3) side by side.
7. one kind according to claim 6 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
Described first crossbeam (6), second cross beam (11), the 3rd crossbeam (11-1), the 4th crossbeam (11-2) and column (3) are I shape
Crossbeam, i-shape steel beam cushion cap (5), first crossbeam (6) are all setting up and down with the wing plate of the 4th crossbeam (11-2), second cross beam
(11), the wing plate of the 3rd crossbeam (11-1) and column (3) all left and right settings, the two ends of the 4th crossbeam (11-2) and column (3)
Web connects, and the two ends of second cross beam (11) are connected with the web of the first column (1-1) on trapezoid horizontal reaction frame (1).
8. one kind according to claim 6 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
It is provided with described trapezoid horizontal reaction frame (1) and prestressed prestressed cable (2) is applied to trapezoid horizontal reaction frame (1), in advance should
The upper end of power cable wire (2) is connected with the entablature (1-2) of trapezoid horizontal reaction frame (1), and lower end is with i-shape steel beam cushion cap (5) even
Connect.
9. one kind according to claim 1 automatically control uniaxial force component Cyclic Loading charger it is characterised in that
Described data collecting system includes computer (25), hydraulic oil source (26), controller (29) and multichannel strain acquirement instrument (30), liquid
Force feed source (26) is connected with horizontal actuator (12) by hydraulic oil pipe (27), and the outfan of controller (29) passes through quad
(28) it is connected with the control end of horizontal actuator (12) and the control end of hydraulic oil source (26) respectively, horizontal load sensor
(14) outfan is connected with the input of multichannel strain acquirement instrument (30), the outfan of multichannel strain acquirement instrument (30)
It is connected with computer (25).
10. a kind of using method automatically controlling uniaxial force component Cyclic Loading charger, when using, its feature exists
In, comprise the steps,
Step one, first external frame fixing device is placed on level ground, and by frame mounted externally for second cross beam (11)
In frame fixing device；
Step 2: again the left end of horizontal actuator (12) is fixedly connected with second cross beam (11), right-hand member passes through the first connecting hinge
(16) it is connected with the left end of test specimen to be measured (13), the right-hand member of test specimen (13) to be measured is fixedly connected with horizontal load sensor (14),
Horizontal load sensor (14) is relatively rotated with connecting rod (15) and is connected, and it is horizontal with the 3rd that connecting rod passes through the second connecting hinge (16-1)
Beam (11-1) is hinged, then on framing fixture mounted externally for the 3rd crossbeam (11-1), will make horizontal actuator (12), to be measured
Test specimen (13), horizontal load sensor (14) and connecting rod (15) are coaxial；
Step 3, more horizontal actuator (12) and horizontal load sensor (14) are connected with data collecting system respectively；
Step 4, when just needing test, controls horizontal actuator (12) to apply horizontal loading to test specimen by data collecting system
Destroy, and the horizontal force in gatherer process and displacement；According to the horizontal displacement at the horizontal force being recorded and horizontal force action point,
Draw the load-displacement curve of test specimen to be measured.
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| CN201610934191.8A CN106370415B (en) | 2016-10-31 | 2016-10-31 | A kind of automatic control uniaxial force component Cyclic Loading loading device and application method |
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