CN103196760B - Portable and adjustable inertial loading experiment device - Google Patents
Portable and adjustable inertial loading experiment device Download PDFInfo
- Publication number
- CN103196760B CN103196760B CN201310115185.6A CN201310115185A CN103196760B CN 103196760 B CN103196760 B CN 103196760B CN 201310115185 A CN201310115185 A CN 201310115185A CN 103196760 B CN103196760 B CN 103196760B
- Authority
- CN
- China
- Prior art keywords
- sample
- fixed
- pedestal
- vibration
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention discloses a portable and adjustable inertial loading experiment device. The inertial loading of a testpiece on the vibration platform along with the reciprocating motion of a vibration platform is realized according to an inertial delay theory. The device can move along with the platform, so that the interference caused by counter-force loading of a fixing bracket to a vibration source can be avoided; and the device is particularly suitable for researches on primary and secondary crack expansion of rock type test samples under the action of vibration loads. The whole device consists of three parts, namely a limiting system, a clamping base and a fixing system, wherein the limiting system is fixed with a tabletop of a horizontal sliding table; two side winging plates can prevent the base from sliding out of the horizontal tabletop after a vibration sample is vibrated to break; clamping plates on two sides of the clamping base are used for clamping a part of the test sample; a rolling bearing is arranged on the top end of the clamping base; a balance weight is arranged on the upper surface of the base through bolts; and the fixing system is fixed with the vibration platform and is used for fixing the test sample, so that the whole fixed test sample and the tabletop of the vibration platform can synchronously vibrate. The clamping base (which is provided with the balance weight) is not fixed with a table body, so that the inertial delay loading is realized.
Description
Technical field
The present invention relates to a kind of portable adjustable inertia loading experimental apparatus, be particularly useful for realizing the research such as former secondary interstice expansion under oscillating load effect of rock simulation material sample.
Background technology
Under effect of vibration, in crack rock, in the propagation law in crack and rock mass, the propagation law of initial fissure, the send out geologic hazards such as the landslide that shake mechanism, reservoir-induced earthquake and geological process under of the relation between the secondary interstice regularity of distribution and vibration to Study of Seismic focus are of great significance, and to silt output, migration rule and groundwater occurrence after crack propagation under further Study of Seismic effect, and the interaction between crack rock stress field and Analysis of Ground-water Seepage Field has great reference value and practical significance.Statics about crack rock is studied, numerous scholar has obtained a large amount of achievement, the dynamics research of crack rock also becomes heat subject, and rarely has report about initial fissure in crack rock under crack propagation secondary under oscillating load effect, the regularity of distribution and failure under earthquake action and secondary interstice Evolution aspect.
Summary of the invention
Technical matters: the object of the invention is to provide a kind of structure portable adjustable inertia loading experimental apparatus that is simple, easy to operate, that test for crack propagation under oscillating load effect.
Technical scheme: portable adjustable inertia loading experimental apparatus of the present invention, comprise limiting plate, be placed in the position-limited rack of pedestal below limiting plate and clamping sample corresponding with pedestal, the both sides of limiting plate are provided with wing plate; Described pedestal is a frame that Open Side Down, and the clamping plate of both sides, frame upper and lower part are provided with the threaded rod for fixing sample, and the top of pedestal is provided with the rolling bearing reduced friction, and the upper surface of pedestal is provided with the counterweight for loading; The clamping plate of described both sides have the square hole groove for threaded rod position adjustments; Described fixed mount comprises the square cushion block that symmetry is located at sample both sides and the threaded rod be fixed on through square cushion block on sample.Described counterweight is two, is arranged symmetrically with.
Beneficial effect: the present invention provides the sluggish charger of inertia with Platform movement for electric vibrating experimental system, in the former secondary interstice expanding test of vibration rock class material, can the overall process destroyed of observed and recorded sample vibration dynamic shearing, the adjustment to specimen clamping position and inertial load can be realized simultaneously.Be embodied in:
1 experimental provision can observe the expansion process of sample secondary interstice intuitively, destroys overall process, often organized the secondary interstice expansion process of sample by the dynamic shearing of each sample of videograph.
2 fixed mounts are fixed in vibrational system, and can one end of clamping sample; Pedestal lies in vibrational system, and can fix the other end of sample.By the position of the threaded rod of adjusting base thus the adjustment reached specimen clamping position.
The counterweight of 3 pedestals can be added and subtracted according to actual needs, is similar to the plus-minus of counterweight.
4 when vibrational system starts to vibrate, and pedestal, due to larger inertia, makes it to there occurs oscillation hysteresis, completes and loads the inertia of sample.
The clamping plate of 5 pedestal both sides have square hole groove.Threaded rod through square hole groove can adjust up and down, thus achieves the adjustment to position during specimen clamping.
Accompanying drawing explanation
Fig. 1 is system schematic of the present invention;
Fig. 2 is pedestal of the present invention and fixed mount side schematic view.
In figure: 1 limiting plate, 2 wing plates, 3 threaded rod one, 4 pedestals, 5 clamping plate, 6 samples, 7 square cushion blocks, 8 fixed mounts, 9 threaded rod three, 10 threaded rod two, 11 counterweights, 12 rolling bearings, 13 square slotted eyes.
Embodiment:
Below in conjunction with accompanying drawing, an example of the present invention is further described:
Portable adjustable inertia loading experimental apparatus of the present invention, comprise limiting plate 1, be placed in the fixed mount 8 of pedestal 4 below limiting plate 1 and clamping sample 6 corresponding with pedestal 4, the both sides of limiting plate 1 are provided with wing plate 2; Described pedestal 4 is a frame that Open Side Down, the threaded rod 2 10 that the clamping plate 5 of both sides, frame top are provided with threaded rod 1, bottom is provided with fixing sample 6, the upper surface that the top of pedestal 4 is provided with rolling bearing 12 pedestal reduced friction is provided with the counterweight 11 for loading, described counterweight 11 is two, is arranged symmetrically with; The clamping plate 5 of described both sides there is the square hole groove 13 of threaded rod 1 and threaded rod 2 10 position adjustments; Described fixed mount 8 comprises the square cushion block 7 that symmetry is located at sample 6 both sides and the threaded rod 39 be fixed on through square cushion block 7 on sample 6.
Principle of work and the course of work: the present invention is by the different ends of limiting plate, clamping base and fixed mount difference clamping test pieces, and limiting plate is fixed on shaking platform, and clamping base is not fixed, do the motion of inertia sluggishness by roller supporting in limiting plate; Adopt the form of sinusoidal vibration during experiment, fixed amplitude amplitude is 15mm, and frequency then progressively increases from 5Hz until sample destroys.Before experiment, first limiting plate 1 is fixed on shaking platform, between the wing plate 2 then pedestal 4 being placed on limiting plate, according to the assembling of sample 6 clamping position threaded rod 1, threaded rod 2 10, fixed mount 8 and threaded rod 39.Sample 6 one end is arranged on pedestal 4, the other end is fixed by fixed mount 8, and is fixed on shaking platform by fixed mount 8, loads counterweight 11 according to experiment demand, ensure that each sample " loaded " position of clamping is all identical, the upper end by fixed mount 8 is fixed to the guiding crack place of sample 6.Then progressively raise the vibration frequency of shaking platform, the critical value making the guiding crack of sample 6 reach crack initiation starts to germinate crack, until crack propagation causes whole sample unstable failure.The loaded securement device that adds that sample 6 is housed is put on shaking table, during vibration, the fixed mount of this device and pedestal are due to the difference of inertia, and sample 6 slightly swings in frame, drive the whole loaded securement device that adds to swing, slip is become rolling to reduce friction by the rolling bearing 12 on pedestal 4.Produce when direction of vibration changes and vibrate asynchronous and make sample produce the changing of the relative positions at guiding crack place.In experimentation, with camera, videograph is carried out to the overall process of whole sample UNSTABLE FAILURE to sample from vibration, and write down monoblock sample and run through vibration frequency when breaking.
Claims (2)
1. a portable adjustable inertia loading experimental apparatus, it is characterized in that: it comprises limiting plate (1), is placed in the pedestal (4) of limiting plate (1) below and the fixed mount (8) of clamping sample (6) corresponding with pedestal (4), and the both sides of limiting plate (1) are provided with wing plate (2), described pedestal (4) is a frame that Open Side Down, the threaded rod two (10) that the clamping plate of both sides, frame top are provided with threaded rod one (3), bottom is provided with fixing sample (6), the upper surface that the top of pedestal (4) is provided with rolling bearing (12) pedestal reduced friction is provided with the counterweight (11) for loading, the clamping plate of described both sides there is the square hole groove (13) for threaded rod one (3) and threaded rod two (10) position adjustments, described fixed mount (8) comprises the square cushion block (7) that symmetry is located at sample (6) both sides and the threaded rod three (9) be fixed on through square cushion block (7) on sample (6), by the different ends of limiting plate, pedestal and fixed mount difference clamping test pieces, limiting plate is fixed on shaking platform, and pedestal is not fixed, and does the motion of inertia sluggishness by roller supporting in limiting plate, adopt the form of sinusoidal vibration during experiment, fixed amplitude amplitude is 15mm, and frequency then progressively increases from 5Hz until sample destroys, before experiment, first limiting plate (1) is fixed on shaking platform, then between the wing plate (2) pedestal (4) being placed on limiting plate, according to sample (6) clamping position assembling threaded rod one (3), threaded rod two (10), fixed mount (8) and threaded rod three (9), sample (6) one end is arranged on pedestal (4), the other end is fixed by fixed mount (8), and fixed mount (8) is fixed on shaking platform, counterweight (11) is loaded according to experiment demand, ensure that each sample " loaded " position of clamping is all identical, upper end by fixed mount (8) is fixed to the guiding crack place of sample (6), then the vibration frequency of shaking platform is progressively raised, the critical value making the guiding crack of sample (6) reach crack initiation starts to germinate crack, until crack propagation causes whole sample unstable failure, the loaded securement device that adds that sample (6) will be housed is put on shaking table, during vibration, add the fixed mount of loaded securement device and the pedestal difference due to inertia, sample (6) slightly swings in frame, drive the whole loaded securement device that adds to swing, slip is become rolling to reduce friction by the rolling bearing (12) on pedestal (4), produce vibration when direction of vibration changes asynchronous, and make sample produce the changing of the relative positions at guiding crack place, in experimentation, with camera, videograph is carried out to the overall process of whole sample UNSTABLE FAILURE to sample from vibration, and write down monoblock sample and run through vibration frequency when breaking.
2.2. portable adjustable inertia loading experimental apparatus according to claim 1, is characterized in that: described counterweight (11) is two, is arranged symmetrically with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115185.6A CN103196760B (en) | 2013-04-07 | 2013-04-07 | Portable and adjustable inertial loading experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115185.6A CN103196760B (en) | 2013-04-07 | 2013-04-07 | Portable and adjustable inertial loading experiment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103196760A CN103196760A (en) | 2013-07-10 |
| CN103196760B true CN103196760B (en) | 2015-06-17 |
Family
ID=48719453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310115185.6A Expired - Fee Related CN103196760B (en) | 2013-04-07 | 2013-04-07 | Portable and adjustable inertial loading experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103196760B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089740B (en) * | 2014-08-01 | 2017-03-01 | 昆山市创新科技检测仪器有限公司 | A kind of loading counterweight device automatically |
| CN110261235B (en) * | 2019-07-05 | 2022-07-08 | 山东科技大学 | Fracture surrounding rock anchoring performance damage testing device and testing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61133851A (en) * | 1984-12-03 | 1986-06-21 | Nishikawa Rubber Kogyo Kk | Sponge physical property measuring apparatus |
| US6718833B2 (en) * | 2001-03-05 | 2004-04-13 | Adtech Systems Research, Inc. | Multiaxial high cycle fatigue test system |
| DK177155B1 (en) * | 2009-12-23 | 2012-03-05 | Vibrationmaster Aps | Stationary junker testing machine |
| CN202599771U (en) * | 2012-04-11 | 2012-12-12 | 北京众力恒业技术开发有限公司 | Vibratory compaction instrument |
| CN202853991U (en) * | 2012-10-22 | 2013-04-03 | 昆山杰士德精密工业有限公司 | Damage test mechanism of annular product |
-
2013
- 2013-04-07 CN CN201310115185.6A patent/CN103196760B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103196760A (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105842086B (en) | A kind of two-way dynamic shear testing maschine of low frictional resistance stacked ring type | |
| CN103808499B (en) | A kind of vibration isolator dynamic stiffness method of testing and device thereof | |
| JP6573828B2 (en) | A method for determining the non-propagation threshold of fatigue cracks at high frequencies. | |
| CN106198264A (en) | A kind of true triaxial rock adds unloading disturbance experimental provision and using method thereof | |
| JP5952158B2 (en) | Vibration isolator | |
| CN103196760B (en) | Portable and adjustable inertial loading experiment device | |
| CN103792057B (en) | A kind of adjustable backlash nonlinearity development test platform and using method thereof | |
| Ertugrul et al. | Reduction of dynamic earth loads on flexible cantilever retaining walls by deformable geofoam panels | |
| RU2654339C1 (en) | Vibration stand for testing building constructions for seismic load | |
| CN204535972U (en) | Vibration isolator dynamic performance testing experiment platform | |
| RU2617568C1 (en) | Shake table | |
| CN106872130B (en) | Vibration test system and test method | |
| CN103792060A (en) | Double-direction vibration resistant test bed | |
| Gillich et al. | Decoupling the structure from the ground motion during earthquakes by employing friction pendulums | |
| CN103669430B (en) | The experimental provision of a kind of heavy machine tool-foundation and soil system interaction | |
| Zahrai et al. | Shake table tests of using single-particle impact damper to reduce seismic response | |
| CN204286731U (en) | A kind of stratiform oscillatory shear soil case test unit | |
| Ostiguy et al. | On the occurrence of simultaneous resonances in parametrically-excited rectangular plates | |
| CN107843401A (en) | A kind of two-way free vibration test device | |
| O’Hern et al. | Multiphase effects in dynamic systems under vibration | |
| Vestad et al. | A low-cost vibration isolation chamber–Making high precision experiments accessible | |
| RU2593412C1 (en) | Test bench of energy interchange in block of rock | |
| CN207622962U (en) | A kind of inversion type vibrating device | |
| CN109141789A (en) | A kind of shear model box of the adjustable natural frequency of vibration | |
| CN219956845U (en) | Device for earthquake simulation test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20160407 |