CN106644327A - Device and method for test of structural member three-dimensional independent loading - Google Patents
Device and method for test of structural member three-dimensional independent loading Download PDFInfo
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- CN106644327A CN106644327A CN201710112372.7A CN201710112372A CN106644327A CN 106644327 A CN106644327 A CN 106644327A CN 201710112372 A CN201710112372 A CN 201710112372A CN 106644327 A CN106644327 A CN 106644327A
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- 238000011068 loading method Methods 0.000 title claims abstract description 66
- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title abstract description 14
- 238000005259 measurement Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000013519 translation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a device and method for a test of structural member three-dimensional independent loading. The method comprises: a structural member for test is fixed on a counterforce base, a jack 1 of an axial force loading system is installed between the stressing end rigid cover plate of the structural member and the horizontal part of a loading support capable of laterally moving along the structural member, and the axial force and the corresponding axial deformation are directly measured through a dynamometry and deformation measuring sensor arranged in the jack 1; two mutually vertical lateral forces are applied on a vertical portion piece 1 and a vertical portion piece 2 of the loading support through a jack 2 and a jack 3, and the lateral forces applied to the member can be directly measured through a force sensor 1 and a force sensor 2 connected between the rigid cover plate and the vertical parts of the loading support. The device and method for test of structural member three-dimensional independent loading can directly measure the lateral forces and axial force actually applied to the structural member to improve the test precision and more accurately simulate the effect of the earthquake on the structural member and the power reaction thereof.
Description
Technical field
The present invention relates to a kind of loading method and device for structural elements, more particularly, to a kind of structural elements is used for
Simulate the loading method and device of two-way side force and axial force and displacement.
Background technology
In field of civil engineering, it is often necessary to carry out the experimental study of labyrinth and component.Particularly importantly it is directed to
Bear the component of vertical force and side force, such as the mechanical property of structural column, bearing wall key member under geological process
Experimental study.
When the earthquake simulation for carrying out structure and component is loaded, need to simulate side force and the axial direction caused by gravity simultaneously
Power.The applying of axial force is mainly realized by three kinds of methods：(1) the high-strength spiral shell at structural elements two ends is fixed on jack tension
Bolt or pull bar apply axial force to structural elements model；(2) loading frame is set, jack is placed in structural elements end and is added
Carry between framework to apply axial force, one end and the structural elements end of jack are hinged, and the other end is hinged with loading frame,
When the lower structural elements end of side force (horizontal force) effect is moved, jack swings therewith；(3) preceding method (2) is similar to, but
Sliding bearing mechanism is set between structural elements end and jack or between jack end and loading frame, in side force
When the lower structural elements end of (horizontal force) effect is moved, jack keeps direction constant.
These both methodical defect be：First method and second method in loading, axially loaded jack
Or pull bar changes direction with lateral loading, thus lateral loading component is produced, the component is with the change of horizontal addload displacement
Change, must be modified during the side force that measurement component is born to it；In the third method, the actual side that component is born
Also frictional force must be deducted from the side force for applying to power could obtain, and because the presence of frictional force causes charger thousand
Jin top is subject to lateral forces to produce bending, it is possible to damage jack.In a word, in these loading methods, it is applied to component
Actual side force all can not be measured directly, it is necessary to by amendment apply side force obtain indirectly, thereby increase test
The difficulty of analysis, reduces the confidence level of test result, and further serious with the increase of test component size.Only invent
The patent (201110264595.8) of people proposes a solution for these problems, but the program adds just for two-way
Carry, it is impossible to carry out three dimensional earthquake power simulated experiment.Vertical double hinge bar supporting loading framves are the process employs, during horizontal addload,
Hinge of the connecting rod below loading frame around lower end rotates, therefore loading frame is actually carrying out camber line translation, with horizontal displacement
While vertically must also produce displacement at it, so as to increased axial force loading control difficulty.Additionally, connecting rod hangs down in zero-bit
Straight state belongs to unstable equilibrium state.Practically brisance is three-dimensional effect, vertical comprising two horizontal directions and one, its simulation
It is increasingly complex, corresponding solution is there are no at present.
The content of the invention
The purpose of the present invention is for deficiencies of the prior art, there is provided one kind can two be laterally mutually perpendicular to
And axial direction is independently implemented and power that is can directly measuring three directions for being applied to structural elements model can guarantee that
Test result is believable charger and method.
The technical solution used in the present invention is：A kind of experimental rig for structural elements three-dimensional independent loads, including use
Loading frame in side force loading, the rigid cover plate for axial force loading, counter-force basis；The structural elements bottom of test is consolidated
On the basis of being scheduled on counter-force, top is connected with rigid cover plate；
The loading frame is connected by lower resistance sliding bearing bearing with counter-force basis, and loading frame is by parallel with side force
Two-way horizontal part and the vertical part one parallel with axial force, vertical part two are formed by fixedly connecting；
The jack one for applying axial force to structural elements is provided with above the horizontal part, it can be with lateral loading frame
Translation simultaneously keeps straight down, the sensor of the axial force that the built-in measurement structure component of jack one is born, on jack one
Portion is connected with rigid cover plate；
Be provided with the jack two of side force loading between the vertical part one and counter-force basis, vertical part one with it is firm
Property cover plate between be provided with the force snesor one that the side force that side force and measurement structure component are born is transmitted to structural elements；
Be provided with the jack three of side force loading between the vertical part two and counter-force basis, vertical part two with it is firm
Property cover plate between be provided with the force snesor that the side force that side force and direct measurement structural elements are born is transmitted to structural elements
Two.
Preferably, the jack one, jack two, jack three are Electronic control hydraulic jack.
A kind of test method using the above-mentioned experimental rig for structural elements three-dimensional independent loads, including following step
Suddenly：
1) structural elements of test is fixed on the basis of counter-force, then the jack one of axial force loading system is installed
Between the reinforcing end rigid cover plate of structural elements and the horizontal part of the loading frame that can be displaced sideways with structural elements, by thousand
A pair of the structural elements in jin top apply axial forces, and axial force and corresponding axis deformation are by the dynamometry that is located in jack one and survey
Deformation-sensor is directly measured；
2) side force of two mutually perpendicular directions first passes through jack two and is applied to the vertical of loading frame with jack three
On part one, vertical part two, then by being arranged on the vertical part one of loading frame, between vertical part two and rigid cover plate
Force snesor one applies with force snesor two to structural elements, and side force is directly surveyed by force snesor one and force snesor two
.
The present invention separates the loading of the side force of both direction and axial force loading in loading, axial force loading because
The loading frame of movement can be applied with lateral loading by one, its direction keeps constant in side force loading procedure,
So as to more really simulate axle power or vertical Action of Gravity Field, and can directly measure the actual side force for being applied to structural elements
And axial force, provide more structurally sound loading method and device for structural model test.
Beneficial effect：Charger of the present invention is that the loading of two-way side force and axial force loading are separated from each other, independent control
The experimental rig of loading, it can directly measure the actual side force and axial force for being applied to structural elements, improve measuring accuracy, and
Effect and its dynamic response of the earthquake to structural elements can more accurately be simulated.
Description of the drawings
Fig. 1 is structural representation of the present invention for the experimental rig of structural elements three-dimensional independent loads.
In accompanying drawing：1st, loading frame, 2, structural elements, 3, counter-force basis, 4, lower resistance sliding bearing bearing, 5, jack
One, 6, rigid cover plate, 7, jack two, 8, jack three, 9, force snesor one, 10, force snesor two, 1-1, horizontal part,
1-2, vertical part one, 1-3, vertical part two.
Specific embodiment
With reference to the accompanying drawings and detailed description the present invention will be further described.
As shown in Figure 1：A kind of experimental rig for structural elements three-dimensional independent loads, including what is loaded for side force
Loading frame 1, the rigid cover plate 6, the counter-force basis 3 that load for axial force；The bottom of structural elements 2 of test is fixed on counter-force base
On plinth 3, top is connected with rigid cover plate 6；
The loading frame 1 is connected by lower resistance sliding bearing bearing 4 and counter-force basic 3, and loading frame 1 with side force by putting down
Capable two-way horizontal part 1-1 and vertical part one 1-2 parallel with axial force, the 1-3 of vertical part two is formed by fixedly connecting；
The jack 1 for applying axial force to structural elements 2 is provided with above the horizontal part 1-1, it can be with lateral
Loading frame translation simultaneously keeps straight down, the sensor of the axial force that the built-in measurement structure component 2 of jack 1 is born, thousand
One 5 tops of jin top are connected with rigid cover plate 6；
The jack 27 of side force loading, vertical part are provided between the 1-2 of vertical part one and counter-force basis 3
It is provided between one 1-2 and rigid cover plate 6 to structural elements 2 and transmits the side force that side force and measurement structure component 2 are born
Force snesor 1；
The jack 38 of side force loading, vertical part are provided between the 1-3 of vertical part two and counter-force basis 3
Be provided between two 1-3 and rigid cover plate 6 to structural elements 2 transmit that side force and direct measurement structural elements 2 born it is lateral
The force snesor 2 10 of power.
The jack 1, jack 27, jack 38 are Electronic control hydraulic jack.
The 1-3 of the 1-2 of vertical part one or vertical parts two of the loading frame parallel with axial force can simulate two mutually
The loading of the side force of vertical direction and torsion.
A kind of test method using the above-mentioned experimental rig for structural elements three-dimensional independent loads, including following step
Suddenly：
1) structural elements 2 of test is fixed on counter-force basis 3, then by the jack 1 of axial force loading system
Installed in the horizontal part 1-1 for reinforcing end rigid cover plate 6 and the loading frame 1 that can be displaced sideways with structural elements 2 of structural elements 2
Between, applying axial force by one 5 pairs of structural elements 2 of jack, axial force and corresponding axis deformation are by being located at jack
Dynamometry and survey deformation-sensor in one 5 is directly measured；
2) side force of two mutually perpendicular directions first passes through jack 27 and is applied to the perpendicular of loading frame 1 with jack 38
To on the 1-2 of part one, the 1-3 of vertical part two, then by being arranged on the 1-2 of vertical part one, the 1-3 of vertical part two of loading frame 1
And the force snesor 1 between rigid cover plate 6 applies with force snesor 2 10 to structural elements 2, side force is sensed by power
Device 1 is directly measured with force snesor 2 10.
Embodiments of the present invention are described in detail above in association with accompanying drawing, but the present invention is not limited to described reality
Apply mode.For one of ordinary skill in the art, in the range of the principle and technological thought of the present invention, to these enforcements
Mode carries out various changes, modification, replacement and deformation and still falls within protection scope of the present invention.
Claims (3)
1. it is a kind of for structural elements three-dimensional independent loads experimental rig, it is characterised in that：Including what is loaded for side force
Loading frame, the rigid cover plate for axial force loading, counter-force basis；The structural elements bottom of test is fixed on counter-force basis
On, top is connected with rigid cover plate；
The loading frame is connected by the way that lower resistance sliding bearing bearing and counter-force are basic, and loading frame is by parallel with side force two-way
Horizontal part and the vertical part one parallel with axial force, vertical part two are formed by fixedly connecting；
The jack one for applying axial force to structural elements, the built-in measurement structure of jack one are provided with above the horizontal part
The sensor of the axial force that component is born, the top of jack one is connected with rigid cover plate；
The jack two of side force loading, vertical part one and rigid cap are provided between the vertical part one and counter-force basis
The force snesor one that the side force that side force and measurement structure component are born is transmitted to structural elements is provided between plate；
The jack three of side force loading, vertical part two and rigid cap are provided between the vertical part two and counter-force basis
The force snesor two that the side force that side force and direct measurement structural elements are born is transmitted to structural elements is provided between plate.
2. it is according to claim 1 it is a kind of for structural elements three-dimensional independent loads experimental rig, it is characterised in that：Institute
State jack one, jack two, jack three and be Electronic control hydraulic jack.
3. the test method of the experimental rig of structural elements three-dimensional independent loads is used for described in a kind of employing claim 1, and it is special
Levy and be：Comprise the following steps：
1）The structural elements of test is fixed on the basis of counter-force, then the jack one of axial force loading system is arranged on into knot
Between the horizontal part of the reinforcing end rigid cover plate of structure component and the loading frame that can be displaced sideways with structural elements, by jack
A pair of structural elements apply axial forces, and axial force and corresponding axial deformation are by the dynamometry that is located in jack one and survey deformation
Sensor is directly measured；
2）The side force of two mutually perpendicular directions first passes through jack two and is applied to the vertical part of loading frame with jack three
First, on vertical part two, then passed by being arranged on the vertical part one of loading frame, the power between vertical part two and rigid cover plate
Sensor one applies with force snesor two to structural elements, and side force is directly measured by force snesor one with force snesor two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112372.7A CN106644327A (en) | 2017-02-28 | 2017-02-28 | Device and method for test of structural member three-dimensional independent loading |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112372.7A CN106644327A (en) | 2017-02-28 | 2017-02-28 | Device and method for test of structural member three-dimensional independent loading |
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| Publication Number | Publication Date |
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| CN106644327A true CN106644327A (en) | 2017-05-10 |
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| CN201710112372.7A Pending CN106644327A (en) | 2017-02-28 | 2017-02-28 | Device and method for test of structural member three-dimensional independent loading |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507217A (en) * | 2018-11-22 | 2019-03-22 | 南京林业大学 | A method of internal strain is distributed after detection wood-based plate water suction |
| CN110186746A (en) * | 2019-04-22 | 2019-08-30 | 浙江大学 | A kind of holding laterally and axially vertical structural test loading device and test method |
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| JP2009236802A (en) * | 2008-03-28 | 2009-10-15 | Railway Technical Res Inst | Three-dimensional tunnel loading simulation device |
| CN102426133A (en) * | 2011-09-08 | 2012-04-25 | 湖南大学 | Device and method for loading axial forces and side forces onto structural member |
| CN102706734A (en) * | 2012-06-14 | 2012-10-03 | 北京工业大学 | Loading test device and method of asymmetric lateral-force-resisting structure |
| CN104359764A (en) * | 2014-12-05 | 2015-02-18 | 福州大学 | Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device |
| CN206504844U (en) * | 2017-02-28 | 2017-09-19 | 南京工业大学 | A kind of experimental rig for the three-dimensional independent loads of structural elements |
-
2017
- 2017-02-28 CN CN201710112372.7A patent/CN106644327A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009236802A (en) * | 2008-03-28 | 2009-10-15 | Railway Technical Res Inst | Three-dimensional tunnel loading simulation device |
| CN102426133A (en) * | 2011-09-08 | 2012-04-25 | 湖南大学 | Device and method for loading axial forces and side forces onto structural member |
| CN102706734A (en) * | 2012-06-14 | 2012-10-03 | 北京工业大学 | Loading test device and method of asymmetric lateral-force-resisting structure |
| CN104359764A (en) * | 2014-12-05 | 2015-02-18 | 福州大学 | Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device |
| CN206504844U (en) * | 2017-02-28 | 2017-09-19 | 南京工业大学 | A kind of experimental rig for the three-dimensional independent loads of structural elements |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507217A (en) * | 2018-11-22 | 2019-03-22 | 南京林业大学 | A method of internal strain is distributed after detection wood-based plate water suction |
| CN109507217B (en) * | 2018-11-22 | 2021-07-20 | 南京林业大学 | Method for detecting internal strain distribution of artificial board after water absorption |
| CN110186746A (en) * | 2019-04-22 | 2019-08-30 | 浙江大学 | A kind of holding laterally and axially vertical structural test loading device and test method |
| CN110186746B (en) * | 2019-04-22 | 2024-03-26 | 浙江大学 | Structure test loading device and test method for keeping lateral direction and axial direction vertical |
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Application publication date: 20170510 |