CN107727343A - A kind of adjustable frame node shock test loading device - Google Patents
A kind of adjustable frame node shock test loading device Download PDFInfo
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- CN107727343A CN107727343A CN201610666721.5A CN201610666721A CN107727343A CN 107727343 A CN107727343 A CN 107727343A CN 201610666721 A CN201610666721 A CN 201610666721A CN 107727343 A CN107727343 A CN 107727343A
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention proposes a kind of adjustable frame node shock test loading device, and discrepancy in elevation conversion block is arranged on counter force wall, its height adjustable；Loader one end is connected with discrepancy in elevation conversion block, and the other end is connected with testing the upper prop side portion of test specimen；Post bottom hinge bearing is arranged on rigid grade beam, for installing the lower styletable of experiment test specimen；Jack is arranged on the upper styletable of experiment test specimen, and jack top is provided with capital rigidity reaction plate；Fastened between capital rigidity reaction plate and post bottom hinge bearing by fixedly connected part；Beam length regulation square steel tube is enclosed on composition beam length governor motion on rigid grade beam；On the ground, its axial location is adjustable for the installation of beam length regulation square steel tube；The adjustable strut lengths of beam-ends are adjustable, and its one end is connected with beam length governor motion, and the other end is connected with testing the end of test specimen beam.The present invention is a kind of interior stress, the loading system of self-balancing, its size adjustable, reusable.
Description
Technical field
The present invention relates to a kind of frame joint seismic testing loading device, especially one kind to be adjusted according to experiment sample dimensions
The loading device of section.
Background technology
Critical component of the frame joint as building structure, its performance directly determine the excellent of total performance.With
And frame joint research is deepened continuously both at home and abroad, be all built upon to the basis of Joints for node research at present
On.Researcher obtains the performance parameter of node, such as bearing capacity, ductility, energy dissipation capacity by being loaded to the antidetonation of node,
So as to be applied among the structure design of reality.Due to the needs of research, during the experiment of reality, people is each tested
The node size gone out designed by member is not quite similar, and which results in one that current most of seismic testing room both at home and abroad is faced
Experiment needs to design and produce the problem of a set of corresponding with test node size test battery loading device.This is resulted in
Experimentation cost is significantly increased, and the loading device is i.e. discarded after the completion of being loaded due to experiment, and this also result in the waste of resource.Together
When, as University of Fuzhou's king's Wonder et al. exists《Civil engineering journal》The 9th phase of September volume 39 in 2006《Concrete-filled steel square tubular column-steel
The experimental study of beam outer annular-stiffer node Hysteresis Behavior》Loading device employed in one text, the loading for capital axle power, greatly
Some scholars employ sets rigid beam to provide counter-force above capital, is applied by jack.The loading of this axle power
Mode, while vertical axle power is loaded on test component, power has been also passed on the hinged-support of loading device bottom, this
Result in because the limitation of bottom hinged-support shear-carrying capacity result in big axial compression ratio model test piece or prototype test specimen
Experiment can not be carried out.
The content of the invention
Antidetonation is carried out present invention aim to address current scientific research personnel both at home and abroad to building frame node in laboratory to add
A set of loading device to match with its test node need to be designed and produced during load, and the loading device is i.e. discarded after the completion of the experiment
The problem of, a kind of frame joint antidetonation loading device of size adjustable is proposed, it is reusable.Meanwhile for current framework section
The method that the vertical axle power of point shock test loading interior joint frame column is applied using rigid beam offer counter-force by jack, makes
Vertical axle power is also passed to the hinged-support of loading device bottom while being applied to experiment test specimen, cause the big axial compression ratio model in part
The situation that the experiment of test specimen or prototype test specimen is restricted, a kind of interior stress, the loading system of self-balancing are proposed, so as to keep away
The vertical axle power for having exempted to apply on frame joint post is delivered on the hinged-support of bottom.
In order to solve the above-mentioned technical problem, the present invention provides a kind of adjustable frame node shock test loading device, bag
Include installation discrepancy in elevation conversion block, loader, capital rigidity reaction plate, jack, styletable clamping plate, fixedly connected part, beam-ends chuck, post
Bottom hinge bearing, beam-ends can adjust pole, beam length regulation square steel tube, rigid grade beam；The discrepancy in elevation conversion block is arranged on counter force wall,
Its height adjustable；Loader one end is connected with discrepancy in elevation conversion block, and the other end is connected with testing the upper prop side portion of test specimen；The post
Bottom hinge bearing is arranged on rigid grade beam, for installing the lower styletable of experiment test specimen；Jack is arranged on the upper prop of experiment test specimen
End, jack top is provided with capital rigidity reaction plate；By being fixedly connected between capital rigidity reaction plate and post bottom hinge bearing
Part fastens；The beam length regulation square steel tube is enclosed on composition beam length governor motion on rigid grade beam；Beam length regulation square steel tube is arranged on
On ground, its axial location is adjustable；The adjustable strut lengths of the beam-ends are adjustable, and its one end is connected with beam length governor motion, separately
One end is connected with testing the end of test specimen beam.
Further, the fixedly connected part is screw-thread steel or prestress wire；Capital rigidity reaction plate and post bottom hinge
Corresponding, the symmetrical mounting hole of plane up and down is offered on bearing, for installing line steel or prestress wire.
Further, post bottom bolt is symmetrically arranged with the side wall of post bottom hinge bearing, for from side fixation test
The lower styletable of test specimen.
Further, highly different multiple positioning holes are provided with discrepancy in elevation conversion block back and counter force wall, the discrepancy in elevation turns
Change in positioning hole corresponding between block back and counter force wall after inserting anchor pole and discrepancy in elevation conversion block is arranged on counter force wall.
Further, discrepancy in elevation conversion block front portion is provided with highly different multiple positioning holes, for fixing loader.
Further, the loader is actuator or tension and compression jack.
Further, the loader is connected by two styletable clamping plates with testing the upper prop side portion of test specimen；Two styletables
Offer to corresponding positioning hole, fastened in positioning hole after installation anchor pole with testing the upper prop side portion of test specimen, loading on clamping plate
Device connects with wherein corresponding styletable clamping plate.
Further, the beam-ends can adjust pole and is made up of inside and outside two nested square steel tubes, is provided with two square steel tubes
Corresponding multiple positioning holes, positioning hole coordinates with peg to be positioned.
Further, the beam-ends, which can adjust pole and be connected and test the end of test specimen beam with beam length governor motion, is hinged；
The end set of the square steel tube at pole both ends is can adjust in beam-ends change-over panel, and hinged is set on change-over panel；Test test specimen beam
End beam-ends chuck is installed, the beam-ends chuck includes upper end clamping plate and beam-ends hinged-support, and upper end clamping plate and beam-ends are hinged
Corresponding mounting hole is offered on seat, and upper end clamping plate and beam-ends hinged-support are fastened on experiment test specimen beam after installation anchor pole in mounting hole
End；The hinge piece set on change-over panel is engaged with the hinge piece set on beam-ends hinged-support.
Further, corresponding positioning hole, positioning hole and peg are offered on the beam length regulation square steel tube and rigid grade beam
Coordinate positioning
Compared with prior art, its remarkable advantage is the present invention：(1) using loading device is designed and produced into size can
The mode of tune, considerably increase the universality of the device, change various sizes of node shock test in the past need to make with
Supporting particular load device situation so that loading device is repeatable to be utilized, largely reduce in experiment pair plus
Carry the waste for putting manpower and financial resources caused by when re-designing；(2) using by the axle power of specimen joints be arranged in by
Power, the mode of self-balancing, the shearing that loading device bottom hinged-support is born is substantially reduced, make big axial compression ratio test specimen or full size mould
The antidetonation load test of type test specimen is no longer by the carrying power restriction of loading device.
Brief description of the drawings
Fig. 1 is the installation diagram that loading device of the present invention is used for cross Joints.
Fig. 2 is that the loading device of the present invention is used for the installation diagram of T-section experimental tests.
Fig. 3 is the experiment test specimen schematic diagram that the present invention can load, and is vertically node post in figure, is laterally node beam, wherein
(a) it is the cross interior joint enlarged drawing of part A in (a) for the experiment affiliated plane frame structure schematic diagram of test specimen, (b), (c) is
(a) the T-shaped mid-side node schematic diagram of part B in.
Fig. 4 is discrepancy in elevation conversion block schematic diagram.
Fig. 5 is capital rigidity reaction plate schematic diagram.
Fig. 6 is styletable clamping plate schematic diagram.
Fig. 7 is beam-ends chuck schematic diagram.
Fig. 8 is post bottom hinge bearing schematic diagram.
Fig. 9 is that beam-ends can adjust pole schematic diagram.
Figure 10 is anchor slab schematic diagram.
Figure 11 is adjustable grade beam schematic diagram.
In figure：1 be counter force wall, 2 be discrepancy in elevation conversion block, 3 be actuator or tension and compression jack, 4 be capital rigidity reaction plate,
5 it is hydraulic jack, 6 be styletable clamping plate, 7 be high-intensity fine rolling screw-thread steel or prestress wire, 8 be experiment test specimen, 9 is beam
End chuck, 10 be post bottom hinge bearing, 11 be anchor pole, 12 be beam length regulation square steel tube, the adjustable pole of 13 beam-ends, 14 anchor slabs, 15
Rigid grade beam, 16 be rigid ground, 17 be peg, 18 be with counter force wall corresponding to heel row positioning hole, 19 be with actuator it is corresponding
Front-seat positioning hole, 20 be the anchor hole of high-intensity fine rolling screw-thread steel or prestress wire, 21 be upper end clamping plate, 22 be anchor
Bar, 23 be beam-ends hinged-support, 24 be Bar Anchorage hole, 25 post bottom bolts, 26 be the latter half of beam-ends hinged-support, 27 sides
Tube end sheet, 28 be peg, 12 be beam length regulation square steel tube, 15 be rigid grade beam, 17 be peg.
Embodiment
It is readily appreciated that, according to technical scheme, in the case where not changing the connotation of the present invention, this area
Those skilled in the art can imagine the numerous embodiments with adjustable frame node shock test loading device of the invention.
Therefore, detailed description below and accompanying drawing are only the exemplary illustrations to technical scheme, and are not to be construed as this
The whole of invention is considered as limitation or restriction to technical solution of the present invention.
With reference to Fig. 1 to Fig. 3, loading device of the present invention is by counter force wall 1, discrepancy in elevation conversion block 2, loader 3, capital rigidity counter-force
Plate 4, hydraulic jack 5, styletable clamping plate 6, fixedly connected part 7, experiment test specimen 8, beam-ends chuck 9, post bottom hinge bearing 10, anchor pole
11st, beam length regulation square steel tube 12, beam-ends can adjust the composition such as pole 13, anchor slab 14, rigid grade beam 15, ground 16, peg 17.
The counter force wall 1 and rigid ground 16 are counter force wall and ground possessed by domestic and international most of structural experiment room,
There are the anchor hole of constant spacing, the fixation for experiment loading unit on counter force wall 1 and on ground 16；The discrepancy in elevation conversion block 2
For the connection of counter force wall 1 and loader 3, discrepancy in elevation conversion block 2 has the positioning hole that front two rows mutually staggers, heel row positioning hole 18
It is connected with counter force wall 1 by anchor pole 11, front-seat positioning hole 19 is used to be connected with loader 3, can by the conversion of discrepancy in elevation conversion block 2
Realize the universality to different pillar height (H) in experiment test specimen；The loader 3 is domestic and international most of structural experiment room institute
The ordinary load device having, such as actuator or tension and compression jack, loader have the function of loading and its corresponding data collection；
4 rigidity of the capital rigidity reaction plate are big, intensity is high, and surrounding is provided with positioning hole, and the reaction plate passes through fixedly connected part 7 and post bottom
Positioning hole on hinged-support 10 is connected, and provides system, shape are withstood forces in one to test the application of the vertical axle power of test specimen pillar
Into the self-balancing of loading device, fixedly connected part 7 can be high-intensity fine rolling screw-thread steel or prestress wire；It is described very heavy
Top 5 can apply capital axle power and the size of axle power is controlled by oil pressure gauge；The styletable clamping plate 6 will test test specimen by anchor pole 11
Clip on loader 3, to test the loading of the hysteresis of test specimen 8；The high-intensity fine rolling screw-thread steel or prestress wire 7 are in reality
Test test specimen surrounding to be arranged symmetrically, its intensity is high, and arrangement quantity is flexible, and when axle power is very big needed for experiment, multiplicable quantity is symmetrical
Arrangement；The experiment test specimen 8 is the node section in plane frame structure, can be divided into cross interior joint test specimen and T-shaped side
Specimen joints；The beam-ends for testing test specimen 8 is clamped and can adjust pole 13 with beam-ends and is hinged by the beam-ends chuck 9, passes through anchor pole
11 clamp beam-ends, realize different beam section size (L in experiment test specimen 8a×Lb) universality；The post bottom hinge bearing 10
Test specimen post bottom hinge is connect, the stress of simulation pillar in the frame, its both sides there are four bolts 25 to be used to test test specimen
Laterally secure, this guarantees different column cross-section size (Ha×Hb) universality, position of opening and capital rigidity in its plane
Hole on reaction plate 4 is corresponding；The anchor pole 11 is used for the connection of each part；The beam length adjusts square steel tube 12, the square steel of use
Bore is identical with square steel tube external diameter used by rigid grade beam 15, and being enclosed on can rigidly move on beam 15 and relative thereon outside
It is dynamic, positioning hole is provided with steel pipe and is used to fix by peg 17 with rigid grade beam 15；The adjustable pole 13 of the beam-ends, which is divided, is
Inside and outside two parts, the pole are made with two square steel tubes, and the external diameter of the square steel tube of lower section is identical with the square steel bore of top,
The positioning hole of same spacing and size is provided with order to the regulation and fixation of strut lengths on upper and lower two-part square steel tube；Institute
Anchor slab 14 is stated to be used to coordinate anchor pole 11 that beam length is adjusted into square steel tube 12 in rigid ground 16；The rigid grade beam 15 is square steel tube
It is made, it is characterised in that the positioning hole of identical with the steel pipe on beam-ends regulation bearing spacing and size is provided with square steel tube, it is protected
The universality of the left and right beam length (Lf, Lr) of different test specimens is demonstrate,proved.
Embodiment
The experiment test specimen that loading device of the present invention is applicable both can be crisscross joint, T-section point.When to cross section
Point installed as shown in Figure 1 during shock test loading, the loading device when carrying out shock test loading to T-section point
Installed as shown in Figure 2.The dimensional parameters of test specimen are tested as shown in figure 3, being tried when carrying out various sizes of node antidetonation loading
It can be met to different lower props height (H by adjusting the length of beam-ends pole 13 when testingd) test specimen loading；It is adjustable by adjusting
The position of beam length regulation square steel tube 12 can meet different left and right beam length (L on section crossbeam 15f、Lr) test specimen loading；Pass through tune
The height of whole discrepancy in elevation conversion block 2 and actuator 3 can meet the test specimen loading of different pillar heights (H)；Meanwhile beam-ends chuck 9 uses
Anchor pole 11 connects, and meets different beam section size (La×Lb) test specimen can carry out experiment loading；Styletable clamping plate 6 and start
Device 3 is connected using anchor pole 11 and post bottom hinge bearing 10 meets different column cross-section size (H provided with four bolts 25a×
Hb) test specimen can be tested.By the above method, the loading device can be to the cross of arbitrary dimension in plane framework
Antidetonation load test is carried out with T-section point.
With reference to Fig. 4, discrepancy in elevation conversion block 2 can be achieved by the way that the hole anchoring corresponding with counter force wall 1 of heel row positioning hole 18 is fixed
The first successive step of load(ing) point height.It can complete to load by finding suitable height installation actuator on front-seat positioning hole 19
Point height is accurately positioned.The load(ing) point height needed for different node pillar heights (H) can be met using above method.
With reference to Fig. 5 and Fig. 8, be provided with capital rigidity reaction plate 4 and post bottom hinge bearing 10 correspond to up and down, plane it is symmetrical
Two row's mounting holes 20 and 24, it is fixedly connected after passing through mounting hole with high-intensity fine rolling screw-thread steel or prestress wire, is oil pressure
Jack 5 provides counter-force, and so as to provide vertical axle power to test the pillar of test specimen, the size of vertical axle power uses hydraulic jack
5 oil pressure gauge control.Apply vertical axle power by this method and form a kind of interior stress, the system of self-balancing, significantly reduce
The shearing that post bottom hinge bearing 10 is born.For the experiment test specimen of common small axial compression ratio, only needed when applying axle power four it is high-strength
Reinforcing bar, you can meet., only need to be surplus when the axle power needed for it is very big for the big axial compression ratio test specimen in part and prototype test specimen
Symmetrically increase number of steel bars by the needs of vertical axle power in remaining mounting hole.
With reference to Fig. 9, beam-ends can adjust pole 13 and is made up of inside and outside two nested square steel tubes, on inside and outside two square steel tubes
It is provided with corresponding equidistant positioning hole.The end of square steel tube is welded with change-over panel 27, and the two of connection hinged-support is welded with change-over panel
Individual hinge piece 26.Selection for square steel tube, the internal diameter of outside square steel tube is identical with the external diameter of internal square steel tube, makes internal square steel tube
Just pack into outside square steel tube, with ensure beam-ends can adjust pole 13 stability and can relative mobility.Inside and outside two sides
Steel pipe is fixed by peg through positioning hole, and the number of positioning hole is typically no less than 2, can suitably increase when beam-ends power is very big
Peg connects quantity.
With reference to Fig. 1, Figure 10 and Figure 11, beam length regulation square steel tube 12 and rigid grade beam 15 its positioning hole is opened using square steel tube
It is made and the square steel tube external diameter of rigid grade beam 15 is identical with the square steel bore of adjustable hinged-support 12, this ensure that it is connected
Stability and can relative mobility.The connection that beam length is adjusted between square steel tube 12 and rigid grade beam 15 uses peg and positioning hole
It is connected, and 2 is no less than per the quantity of side positioning hole connection, can suitably increases connection quantity when stress is very big.Such as Fig. 1
It is shown, by the anchor slab 14 shown in Figure 10 by two anchor poles by the adjustable grade beam anchor shown in Figure 11 on ground 16, while one
Using two pieces of anchor slab fixations to ensure stability of the loading device in loading procedure on individual beam length regulation square steel tube.
Claims (10)
1. a kind of adjustable frame node shock test loading device, it is characterised in that including installation discrepancy in elevation conversion block (2), add
Carry device (3), capital rigidity reaction plate (4), jack (5), styletable clamping plate (6), fixedly connected part (7), beam-ends chuck (9), post
Bottom hinge bearing (10), beam-ends can adjust pole (13), beam length regulation square steel tube (12), rigid grade beam (15)；
The discrepancy in elevation conversion block (2) is arranged on counter force wall (1), its height adjustable；Loader (3) one end and discrepancy in elevation conversion block
(2) connect, the other end is connected with the upper prop side portion of experiment test specimen (8)；
The post bottom hinge bearing (10) is arranged on rigid grade beam (15), for installing the lower styletable of experiment test specimen (8)；Jack
(5) the upper styletable of experiment test specimen (8) is arranged on, jack (5) top is provided with capital rigidity reaction plate (4)；Capital is rigidly anti-
Fastened between power plate (4) and post bottom hinge bearing (10) by fixedly connected part (7)；
The beam length regulation square steel tube (12) is enclosed on composition beam length governor motion on rigid grade beam (15)；Beam length adjusts square steel tube
(12) it is arranged on ground (16), its axial location is adjustable；
The beam-ends can adjust pole (13) adjustable length, and its one end is connected with beam length governor motion, the other end and experiment test specimen
(8) the end connection of beam.
2. loading device as claimed in claim 1, it is characterised in that the fixedly connected part (7) is screw-thread steel or prestressing force
Steel strand wires；Corresponding, the symmetrical mounting hole of plane up and down is offered on capital rigidity reaction plate (4) and post bottom hinge bearing (10), is used
In installation line steel or prestress wire.
3. loading device as claimed in claim 1, it is characterised in that be symmetrically arranged with post in the side wall of post bottom hinge bearing (10)
Bottom bolt (25), for the lower styletable from side fixation test test specimen (8).
4. loading device as claimed in claim 1, it is characterised in that be all provided with discrepancy in elevation conversion block (2) back and counter force wall (1)
Highly different multiple positioning holes are equipped with, are inserted between discrepancy in elevation conversion block (2) back and counter force wall (1) in corresponding positioning hole
Discrepancy in elevation conversion block (2) is arranged on counter force wall (1) after anchor pole (11).
5. loading device as claimed in claim 1, it is characterised in that discrepancy in elevation conversion block (2) front portion is provided with highly different more
Individual positioning hole, for fixing loader (3).
6. loading device as claimed in claim 1, it is characterised in that the loader (3) is actuator or tension and compression jack.
7. loading device as claimed in claim 1, it is characterised in that the loader (3) passes through two styletable clamping plates (6) and examination
Test the upper prop side portion connection of test specimen (8)；Offered on two styletable clamping plates (6) to corresponding positioning hole, positioning hole is interior to be installed
Anchor pole (11) fastens with the upper prop side portion of experiment test specimen (8) afterwards, and loader (3) connects with wherein corresponding styletable clamping plate (6).
8. loading device as claimed in claim 1, it is characterised in that the beam-ends can adjust pole (13) by inside and outside nested two
Individual square steel tube is formed, and corresponding multiple positioning holes are provided with two square steel tubes, and positioning hole coordinates with peg (17) to be positioned.
9. loading device as claimed in claim 1, it is characterised in that the beam-ends can adjust pole (13) and beam length governor motion
The end of connection and experiment test specimen (8) beam is be hinged；
The end set of the square steel tube at pole (13) both ends is can adjust in beam-ends change-over panel (27), and change-over panel is provided with (27)
Cut with scissors piece (26)；
The end of experiment test specimen (8) beam is provided with beam-ends chuck (9), and the beam-ends chuck (9) includes upper end clamping plate (21) and beam
Hinged-support (23) is held, corresponding mounting hole is offered on upper end clamping plate (21) and beam-ends hinged-support (23), anchor is installed in mounting hole
Upper end clamping plate (21) and beam-ends hinged-support (23) are fastened on the end for testing test specimen (8) beam to bar (22) afterwards；Change-over panel is set on (27)
The hinge piece (26) put is engaged with the hinge piece set on beam-ends hinged-support (23).
10. loading device as claimed in claim 1, it is characterised in that the beam length regulation square steel tube (12) and rigid grade beam
(15) corresponding positioning hole is offered on, positioning hole coordinates with peg (17) to be positioned.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610666721.5A CN107727343A (en) | 2016-08-12 | 2016-08-12 | A kind of adjustable frame node shock test loading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610666721.5A CN107727343A (en) | 2016-08-12 | 2016-08-12 | A kind of adjustable frame node shock test loading device |
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| CN108956272A (en) * | 2018-07-30 | 2018-12-07 | 中国建筑股份有限公司 | A kind of pair of test component applies the device and test method of sidewise restraint |
| CN109374246A (en) * | 2018-11-02 | 2019-02-22 | 湖南工业大学 | Simulate the experimental rig that crossed beam and column node bears horizontal earthquake action |
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| CN110553907A (en) * | 2018-05-31 | 2019-12-10 | 福建江夏学院 | Frame node self-balancing continuous loading device for chlorine salt environment and load coupling |
| CN108956272A (en) * | 2018-07-30 | 2018-12-07 | 中国建筑股份有限公司 | A kind of pair of test component applies the device and test method of sidewise restraint |
| CN109374246A (en) * | 2018-11-02 | 2019-02-22 | 湖南工业大学 | Simulate the experimental rig that crossed beam and column node bears horizontal earthquake action |
| CN109540679B (en) * | 2018-11-26 | 2023-10-27 | 山东交通学院 | Vibration-proof and stretching experiment system for bridge member and adjustable base |
| CN109540679A (en) * | 2018-11-26 | 2019-03-29 | 山东交通学院 | For the antivibration of bridge member, stretching experiment system and adjustable base |
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Application publication date: 20180223 |