CN108827682A - A kind of anti-load(ing) point unstability device of structural test - Google Patents
A kind of anti-load(ing) point unstability device of structural test Download PDFInfo
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- CN108827682A CN108827682A CN201810660114.7A CN201810660114A CN108827682A CN 108827682 A CN108827682 A CN 108827682A CN 201810660114 A CN201810660114 A CN 201810660114A CN 108827682 A CN108827682 A CN 108827682A
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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
- G01M99/00—Subject matter not provided for in other groups of this subclass
Abstract
The present invention discloses a kind of anti-load(ing) point unstability device of structural test, including clip type crossbeam, guide holder and servo actuator, clip type crossbeam is mounted on the column of bearing frame, guide holder is placed on clip type cross rail inner, and motion parts (load(ing) point) top of guide holder and the piston rod of servo actuator are hinged；Sample one end to be tested is connected to the bottom end of guide holder motion parts (load(ing) point), and the other end is placed on load ground.The anti-load(ing) point unstability device of test structure in the present invention, the side of the motion parts of its guide holder is connect by line slideway auxiliary with fixed part, therefore the low friction movement of vertical direction Z-direction can only be realized, horizontal direction is constrained by linear guide, stable structure is reliable, and in test, load(ing) point will not deform because of structure interval；Lateral force resistance component, can bearing test when lateral force, provide lateral support for test, while preventing load(ing) point lateral deformation and unstability occurs.
Description
Technical field
It is anti-more particularly to a kind of structural test the present invention relates to structural static, quasi- power and fatigue test technology field
Load(ing) point unstability device.
Background technique
Structural testing system is a kind of equipment for testing structural mechanical property, its development and development are existing to country
The infrastructure that must be built in generationization process of construction is such as：Super-high buildings, subway, airport, office building, auditoriums, hotels, Longspan Bridge,
The design of airliner, space shuttle, jumbo ship, ocean platform, nuclear power plant etc. is examined, optimization, is verified with mileage
The meaning of upright stone tablet formula.
In national economy extensive developing period, the design of above-mentioned each class formation is either designed based on analogy method
Precisely or reasonability is not the emphasis considered.Such design method is in mainly setting with conventional material and conventional structure
In meter, heuristic methods are although have biggish design error, because of the experience and relatively advanced computer mould for having forefathers
Quasi- computing technique, final result or acceptable.
Into 21st century, the rapid development of modernization of the country construction, various new constructions, new material emerge one after another, and produce
All kinds of contradictions that product and the developing direction and shortage of resources of engineering enlargement, integration and complication cause, Analogy are met
Increasing challenge is arrived, new construction leads to the not similar successful experience that can be used for reference, super large with new diseases
The risk of the engineering design of scale and economizing on resources reduce the general requirement of cost also to heavy construction the design phase examination
Verifying becomes even more important and essential.And the structure that must be taken into consideration during design and use is in complicated external condition
Under (load, vibration, high/low temperature, burn into weathering) deformation and the technical indicators such as fatigue fracture intensity and various structures it is whole
The research of the problems such as working performance, reinforced concrete structure non-linear behaviour needs also to become increasingly conspicuous.
Static mechanical property test can test structure stress and anti-seismic performance, on the basis of in this, to building structure,
Road, bridge carry out fatigue property test, can simulate in a relatively short period of time measurand coming few decades mechanical characteristic,
The indexs such as durability, safety, service life provide theories integration and quantizating index for structural maintenance, reinforcing etc..
In existing structural testing system, than more prominent the problem of load(ing) point unstability, which directly results in test and loses
It loses, or even safety accident can occur.
Reduced scale since the sample of structural test and the sample of fatigue test of materials are different, as actual structure or structure
Model tends not to guarantee that sample has good geometry or a force way, test to neutral bad, will result in and trying
Lateral force is generated during testing.And servo loading actuator reduces damage of the lateral force to piston rod to meet high frequency response,
Reduce frictional force, improves the service life, both ends can use spherical hinge structure.Due to the presence of both ends flexural pivot, so that piston rod is almost only
It will be greatly reduced by the influence of axial force, lateral force, improve service performance and service life.But resulting problem is to load
The lateral force generated in the process is not eliminated, but has reacted to examination by the connection of tailpiece of the piston rod flexural pivot and load(ing) point
On part, more than test specimen ability to bear when, it will cause test specimen weak part to go out plane instability, this unstability is not sample itself
Characteristic generate, but due to load(ing) point go out plane generate, experimental condition be not able to satisfy testing program requirement
Test to test specimen performance, leads to test failure.
Summary of the invention
The object of the present invention is to provide a kind of anti-load(ing) point unstability devices of structural test, exist to solve the above-mentioned prior art
The problem of, it ensure that contact area, load(ing) point unstability can either be prevented, and can prevent from leading to not complete because of local failure
The test of total.
To achieve the above object, the present invention provides following schemes：The present invention provides a kind of anti-load(ing) point mistake of structural test
Stabilization device, including clip type crossbeam, guide holder and servo actuator, the clip type crossbeam are mounted on the column of bearing frame
On, the guide holder includes motion parts and fixed part, and the side of the motion parts passes through guide assembly and the fixation
Part connects, and is fixedly connected on the inside of the two sides of the fixed part and the clip type crossbeam；The guide holder motion parts
The top of (load(ing) point) and the piston rod of the servo actuator are hinged；Sample one end to be tested is connected to the guide holder fortune
The bottom end of dynamic part (load(ing) point), the other end are placed on load ground.
Preferably, the guide assembly is line slideway auxiliary.
Preferably, the upper junction plate of the motion parts and the tailpiece of the piston rod of the servo actuator are hinged.
Preferably, the flange of the fixed part and the upper plane of the clip type crossbeam are fixed.
Preferably, the servo actuator includes preceding flexural pivot and rear flexural pivot, and the preceding flexural pivot is set to the servo actuation
The upper junction plate of the front end of the piston rod of device, the motion parts is connect by preceding flexural pivot with the piston rod；Flexural pivot after described
Top positioned at the servo actuator is connected with the bottom end of column top bearing beam.
Preferably, the bottom end of the motion parts is equipped with bulb and the connecting plate fixed with the bulb, described to be measured
Sample of having a try is connected with the connecting plate of the bulb.
The present invention achieves following technical effect compared with the existing technology：
The anti-load(ing) point unstability device of test structure in the present invention, the side of the motion parts of guide holder is led by straight line
Rail pair is connect with fixed part, therefore can only realize the low friction movement of vertical direction Z-direction, and horizontal X, Y-direction are led by straight line
Rail constraint goes out the lateral force (X, Y-direction) of plane then by linear guide, guiding as caused by installation error and sample counter-force
Seat, clip type crossbeam, column are transmitted on the basis of counter-force.Stable structure is reliable, and in test, load(ing) point will not be because of structure interval
It deforms；Lateral force resistance component, can bearing test when lateral force, provide lateral support for test, while preventing from loading
It puts lateral deformation and unstability occurs.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the schematic diagram of internal structure of anti-load(ing) point unstability device；
Fig. 2 is the schematic diagram that anti-load(ing) point unstability device applies active force to sample；
Fig. 3 is the overall structure diagram of anti-load(ing) point unstability device；
Fig. 4 is the 3 dimensional drawing of Fig. 2；
Fig. 5 is the overall schematic of anti-load(ing) point unstability device；
Wherein, 1 guide holder motion parts；2 guide holder fixed parts；3 clip type crossbeams；4 guide assemblies；Flexural pivot after 5；6
Servo actuator；Flexural pivot before 7；8 bulbs；9 samples to be tested；10 load grounds；11 guide holder assemblies；12 columns；13 carryings
Crossbeam.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of anti-load(ing) point unstability devices of structural test, exist to solve the above-mentioned prior art
The problem of, it ensure that contact area, load(ing) point unstability can either be prevented, and can prevent from leading to not complete because of local failure
The test of total.
The anti-load(ing) point unstability device of structural test provided by the invention, including clip type crossbeam, guide holder and servo actuation
Device, clip type crossbeam are mounted on the column of bearing frame, and guide holder is placed on clip type cross rail inner, guide holder motion parts
The top of (load(ing) point) and the piston rod of servo actuator are hinged；Sample one end to be tested is connected to the bottom end of guide holder, separately
One end is placed on load ground.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Please refer to Fig. 1-5, wherein Fig. 1 is the schematic diagram of internal structure of anti-load(ing) point unstability device；Fig. 2 is anti-load(ing) point
Unstability device applies the schematic diagram of active force to sample；Fig. 3 is the overall structure diagram of anti-load(ing) point unstability device；Fig. 4 is
The 3 dimensional drawing of Fig. 2；Fig. 5 is the overall schematic of anti-load(ing) point unstability device.
As shown in Figs. 1-5, the present invention provides a kind of anti-load(ing) point unstability device of structural test, including clip type crossbeam 3, leads
To seat 11 and servo actuator 6, clip type crossbeam 3 is mounted on the column 12 of bearing frame, and guide holder 11 is placed on clip type
3 inside of crossbeam, the top of guide holder motion parts 1 (load(ing) point) and the piston rod of servo actuator 6 are hinged；Sample to be tested
9 one end are connected to the bottom end of guide holder motion parts 1 (load(ing) point), and the other end is placed on load ground 10.
Guide holder 11 includes motion parts 1 and fixed part 2, and the side of motion parts 1 passes through guide assembly 4 and fixed part
Divide 2 connections, the two sides of fixed part 2 are fixedly connected with the inside of clip type crossbeam 3, and the flange and clip type of fixed part 2 are horizontal
The upper plane of beam 3 is fixed, 1 upper junction plate of motion parts of guide holder 11 and being hinged for the tailpiece of the piston rod of servo actuator 6, fortune
The side of dynamic part 1 is connect by line slideway auxiliary with fixed part 2, therefore can only realize the low friction fortune of vertical direction Z-direction
Dynamic, horizontal X, Y-direction are constrained by linear guide, and lateral force (X, Y of plane are gone out as caused by installation error and sample counter-force
To) be then transmitted on the basis of counter-force by linear guide, guide holder 11, clip type crossbeam 3, column.Stable structure is reliable, is trying
Load(ing) point will not deform because of structure interval when testing；Lateral force resistance component, can bearing test when lateral force, for test mention
For lateral support, while preventing load(ing) point from unstability occurs because of lateral deformation.
Servo actuator 6 includes preceding flexural pivot 7 and rear flexural pivot 5, before preceding flexural pivot 7 is set to the piston rod of servo actuator 6
The upper junction plate at end, motion parts 1 is connect by preceding flexural pivot 7 with piston rod；Afterwards flexural pivot 5 be located at the top of servo actuator 6 with
The bottom end of 12 top load bearing beam 13 of column is connected.The bottom end of motion parts 1 is equipped with bulb 8 and the connection fixed with bulb 8
The connecting plate of plate, sample 9 to be tested and bulb 8 is inconsistent.
Bridge, building structure test specimen are generally concrete structure or reinforced concrete structure, and it is lower to manufacture precision, can not
Accomplish to come into full contact with connecting plate, structural test piece discontinuity when load, it may appear that the phenomenon that local failure, therefore be oriented to
The motion parts 1 of seat 11 are equipped with bulb 8, and 8 connecting plate of bulb can be connect with sample, ensure that contact area, have both prevented and have added
Loading point unstability, and prevent the test for leading to not complete total because of local damage.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (6)
1. a kind of anti-load(ing) point unstability device of structural test, it is characterised in that：Including clip type crossbeam, guide holder and servo actuation
Device, the clip type crossbeam are mounted on the column of bearing frame, and the guide holder includes motion parts and fixed part, described
The side of motion parts is connect by guide assembly with the fixed part, and the two sides of the fixed part and the clip type are horizontal
It is fixedly connected on the inside of beam；The top of the guide holder motion parts and the piston rod of the servo actuator are hinged；It is to be measured
Sample one end of having a try is connected to the bottom end of the guide holder motion parts, and the other end is placed on load ground.
2. the anti-load(ing) point unstability device of structural test according to claim 1, it is characterised in that：The guide assembly is straight
Line guideway.
3. the anti-load(ing) point unstability device of structural test according to claim 1, it is characterised in that：The motion parts it is upper
The tailpiece of the piston rod of connecting plate and the servo actuator is hinged.
4. the anti-load(ing) point unstability device of structural test according to claim 1, it is characterised in that：The fixed part it is convex
The upper plane of edge and the clip type crossbeam is fixed.
5. the anti-load(ing) point unstability device of structural test according to claim 1, it is characterised in that：The servo actuator packet
Preceding flexural pivot and rear flexural pivot are included, the preceding flexural pivot is set to the front end of the piston rod of the servo actuator, the motion parts
Upper junction plate is connect by preceding flexural pivot with the piston rod；Flexural pivot is located on the top and column of the servo actuator after described
The bottom end of portion's bearing beam is connected.
6. the anti-load(ing) point unstability device of structural test according to claim 1, it is characterised in that：The bottom of the motion parts
End is equipped with bulb and the connecting plate fixed with the bulb, the sample to be tested are connected with the connecting plate of the bulb.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660114.7A CN108827682A (en) | 2018-06-25 | 2018-06-25 | A kind of anti-load(ing) point unstability device of structural test |
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| CN201810660114.7A CN108827682A (en) | 2018-06-25 | 2018-06-25 | A kind of anti-load(ing) point unstability device of structural test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409851A (en) * | 2020-04-09 | 2020-07-14 | 中国飞机强度研究所 | Vertical restraint of aircraft and protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101290269B (en) * | 2008-05-30 | 2010-10-13 | 杭州邦威机电控制工程有限公司 | Initiative and follow-up loading structure experiment system |
| CN202083541U (en) * | 2011-01-05 | 2011-12-21 | 哈尔滨飞机工业集团有限责任公司 | Follow-up loading structure for airplane flap test |
| CN202330034U (en) * | 2011-11-21 | 2012-07-11 | 重庆长安汽车股份有限公司 | Durability test stand of shock absorber |
| CN206223465U (en) * | 2016-12-09 | 2017-06-06 | 杭州邦威机电控制工程有限公司 | A kind of large scale structure fatigue test machine host |
| CN107389448A (en) * | 2017-07-28 | 2017-11-24 | 中车戚墅堰机车车辆工艺研究所有限公司 | Guidance set, vertical loading device and method |
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2018
- 2018-06-25 CN CN201810660114.7A patent/CN108827682A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290269B (en) * | 2008-05-30 | 2010-10-13 | 杭州邦威机电控制工程有限公司 | Initiative and follow-up loading structure experiment system |
| CN202083541U (en) * | 2011-01-05 | 2011-12-21 | 哈尔滨飞机工业集团有限责任公司 | Follow-up loading structure for airplane flap test |
| CN202330034U (en) * | 2011-11-21 | 2012-07-11 | 重庆长安汽车股份有限公司 | Durability test stand of shock absorber |
| CN206223465U (en) * | 2016-12-09 | 2017-06-06 | 杭州邦威机电控制工程有限公司 | A kind of large scale structure fatigue test machine host |
| CN107389448A (en) * | 2017-07-28 | 2017-11-24 | 中车戚墅堰机车车辆工艺研究所有限公司 | Guidance set, vertical loading device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409851A (en) * | 2020-04-09 | 2020-07-14 | 中国飞机强度研究所 | Vertical restraint of aircraft and protection device |
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Application publication date: 20181116 |