CN102426133B - Device and method for loading axial forces and side forces onto structural member - Google Patents
Device and method for loading axial forces and side forces onto structural member Download PDFInfo
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- CN102426133B CN102426133B CN 201110264595 CN201110264595A CN102426133B CN 102426133 B CN102426133 B CN 102426133B CN 201110264595 CN201110264595 CN 201110264595 CN 201110264595 A CN201110264595 A CN 201110264595A CN 102426133 B CN102426133 B CN 102426133B
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Abstract
The invention provides a device and a method for loading axial forces and side forces onto a structural member. The apparatus comprises a loading rack which is connected with a counter-force beam or a counter-force base of a fixed member through a connecting rod whose two ends are provided with hinges; a part I which is parallel to the side forces is in fixed connection with a part II which is parallel to the axial forces, and thereby forming the loading rack; the part is provided with a jack I or a pull bar that loads an axial force onto the structural member, the part II is provided with a force transducer which transfers a side force to the structural member and directly measures the side force that the structural member bears, and a jack II is provided between the part II and the counter-force beam or the counter-force base and is used for loading side forces. The invention also includes the method for loading axial forces and side forces to the structural member. According to the invention, actual side forces and axial forces applied on the structural member can be measured directly, thereby improving credibility of results of measurement.
Description
Technical field
The present invention relates to a kind of charger for structural elements and method, especially relate to a kind of charger and method for structural elements simulation side force and axial force test.
Background technology
No matter civil construction project is design research and development or the design and construction of labyrinth of new architecture, and the checking of operation performance, all needs to carry out the experimental study of structure and member.Particularly as bearing the member of vertical force and side force, very important as the experimental Study on Mechanical Properties of key members such as structural column, bearing wall under geological process.
At present, when carrying out the side force loading of structure and member, often need to apply simultaneously axial force and come simulated gravity.Because the axial force that applies is often very big, and directly adopt the weight weight application unreliable and dangerous, therefore, applying mainly by following three kinds of methods of axial force: (1) applies axial force by high-strength bolt or the pull bar that jack tension is fixed in the structural elements two ends to structural elements; (2) loading frame is set, lifting jack placed between structural elements end and the loading frame apply axial force, one end and the structural elements end of lifting jack are hinged, the other end and loading frame are hinged, when moved the structural elements end under side force (horizontal force) effect, lifting jack was swung thereupon; (3) similar preceding method (2), but sliding bearing mechanism is being set between structural elements end and the lifting jack or between jack end and the loading frame, when moved the structural elements end under side force (horizontal force) effect, lifting jack kept direction constant.
There is following deficiency in use in said method: first method and second method are when loading, axially the lifting jack that loads or pull bar load with side direction and change direction, thereby the generation side direction loads component, this component changes with the variation of horizontal load deflection, must revise when the side force that the measurement member bears; In the third method, the actual side force that member bears also must be deducted friction force and could obtain from the side force that applies, and produces bending because the existence of friction force makes the charger lifting jack be subjected to lateral forces, might damage lifting jack.In a word, in these loading methods, the actual side force that imposes on member all can not directly record, must obtain indirectly by the side force that correction applies, increased the difficulty of analysis of experiments, reduced the confidence level of test result, along with the size increase problem of test component is about seriously.In addition, when side force must two-way loading in order to simulate such as two-way seismic force, it is more complicated that problem becomes, even not definite.Equally, when axial force is simulated earthquake effect when change is arranged, it is more complicated that problem becomes, and seriously reduced the confidence level of experiment.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of and side force loaded and the axial force loading separates, and can directly record the actual side force and the axial force that impose on structural elements, can improve charger and the method for test result confidence level.
The present invention's the axial force and the side force charger that are used for structural elements, comprise loading frame, described loading frame is provided with hinge by two ends connecting rod is connected with reaction beam or the counter-force basis that fixed component is used, described loading frame is formed by fixedly connecting with the parts II parallel with axial force by the parts I parallel with side force, be equipped with the lifting jack I or the pull bar that structural elements are loaded axial force on the described parts I, described parts II is provided with to structural elements and transmits side force and directly measure the power sensor of the side force that structural elements bears, and is provided with the lifting jack II of side force loading usefulness between described parts II and reaction beam or the counter-force basis.
Further, the described loading frame parts I parallel with side force is shaped as U-shaped or the square shape shape.
Further, the parts II of the described loading frame parallel with axial force is two, and angledly mutually (when establishing one, can only simulate the loading of a side force; If two and angled mutually, can simulate the different directions side force and load or reverse).
Further, described lifting jack can preferred electronic control fluid pressure type lifting jack.
The present invention's the axial force and the side force loading method that are used for structural elements: earlier structural elements is fixed on reaction beam or counter-force basis, lifting jack I or pull bar with the axial force loading system is installed between the afterburning end of structural elements and the loading frame again, apply axial force by lifting jack I or pull bar tension structure member and loading frame, described axial force directly records by the force cell that is located on lifting jack I or the pull bar; Side force is applied on the loading frame by the lifting jack II earlier, applies to structural elements by the power sensor that is arranged between loading frame and the structural elements again, and the true side force that described structural elements bears directly records by the power sensor.
The stiff end of test component can be fixed on the loading frame parts parallel with side force, and like this, charger can be used as weighted platform and uses, and the side force load becomes a kind of shaking table when being power.
The present invention is when loading, loading separates with axial force with the side force loading, axial force loads because passed through one and can apply with the loading frame that the side direction loading is moved, its direction remains unchanged in the side force loading procedure, thereby more real simulated axle power or vertical gravity effect, and can directly record actual side force and the axial force that imposes on structural elements.In addition, the described loading component II parallel with axial force can be set to two, and becomes the side force loading of simulation different directions or the angle of reversing mutually, be used for two-way loading, further be engineering detecting, research and development of products, design verification etc. provide more reliable charger and method.
Description of drawings
Fig. 1 is the present invention's the axial force that is used for structural elements and the structural representation of side force charger embodiment.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
With reference to Fig. 1, the present invention's the axial force and the side force charger embodiment that are used for structural elements comprise loading frame 1, described loading frame 1 is provided with hinge by two ends connecting rod 4 is connected with the reaction beam 3 of fixed structural member 2 usefulness, described loading frame 1 is formed by fixedly connecting with the parts II 1-2 parallel with axial force by the parts I 1-1 parallel with side force, be equipped with the lifting jack I 5 that structural elements 2 is loaded axial force on the described parts I 1-1, described parts II 1-2 is provided with to structural elements 2 and transmits side forces and directly measure the power sensor 8 of the side force that structural elements 2 bears, and is provided with the lifting jack II 7 of side force loading usefulness between described parts II 1-2 and the reaction beam 3.
Described lifting jack I 5, lifting jack II 7 are electronic control fluid pressure type lifting jack.Described lifting jack I 5 also can be pull bar.
Being shaped as of the described loading frame parts I parallel with side force is U-shaped.Certainly, also can be the square shape shape.
The parts II of the described loading frame parallel with axial force also can be two, and angled mutually.
Described reaction beam 3 also can be the counter-force basis.
With reference to Fig. 1, the present invention's the axial force and the side force loading method embodiment that are used for structural elements: test component 2 is fixed on reaction beam 3, between the parts I 1-1 of the loading frame 1 that again the lifting jack I 5 of axial force loading system is installed in the afterburning end floor beam 6 of test component 2 and can be displaced sideways with test component 2, parts I 1-1 by lifting jack I 5 pulling test members 2 and loading frame 1 applies axial force, and described axial force directly records by the force cell that is located at by lifting jack I 5; Side force is applied on the parts II 1-2 of loading frame 1 by lifting jack II 7 earlier, and the parts II 1-2 by being arranged on loading frame 1 and the power sensor 8 between the test component 2 apply to test component 2 again, and described side force directly records by power sensor 8.
Claims (4)
1. axial force and side force charger that is used for structural elements, it is characterized in that: comprise loading frame, described loading frame is provided with hinge by two ends connecting rod is connected with the counter-force basis of fixed component, described loading frame is formed by fixedly connecting with the parts II parallel with axial force by the parts I parallel with side force, be equipped with the lifting jack I or the pull bar that structural elements are loaded axial force on the described parts I, described parts II is provided with to structural elements and transmits side force and directly record the power sensor of the side force that structural elements bears, and is provided with the lifting jack II of side force loading usefulness between described parts II and the counter-force basis.
2. axial force and side force charger for structural elements according to claim 1 is characterized in that: the described loading frame parts I parallel with side force be shaped as U-shaped or square shape shape.
3. according to right 1 or 2 described axial force and side force chargers for structural elements, it is characterized in that: the parts II of the described loading frame parallel with axial force is two, and angled mutually.
4. a right to use requires 1 described axial force and side force charger structural elements to be loaded the method for axial force and side force, it is characterized in that: earlier structural elements is fixed on the counter-force basis, lifting jack I or pull bar with the axial force loading system is installed between the afterburning end of structural elements and the loading frame again, apply axial force by lifting jack I or pull bar tension structure member and loading frame, described axial force directly records by the force cell that is located on lifting jack I or the pull bar; Side force is applied on the loading frame by the lifting jack II earlier, applies to structural elements by the power sensor that is arranged between loading frame and the structural elements again, and the true side force that described structural elements bears directly records by the power sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110264595 CN102426133B (en) | 2011-09-08 | 2011-09-08 | Device and method for loading axial forces and side forces onto structural member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110264595 CN102426133B (en) | 2011-09-08 | 2011-09-08 | Device and method for loading axial forces and side forces onto structural member |
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| CN102426133A CN102426133A (en) | 2012-04-25 |
| CN102426133B true CN102426133B (en) | 2013-08-21 |
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| CN 201110264595 Active CN102426133B (en) | 2011-09-08 | 2011-09-08 | Device and method for loading axial forces and side forces onto structural member |
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| CN103913285B (en) * | 2012-12-31 | 2017-06-09 | 北京建筑工程学院 | A kind of mechanical test device |
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| CN105865733B (en) * | 2016-04-28 | 2019-02-22 | 福州大学 | A kind of test method and experimental rig for verifying sliding support frictional force |
| CN106644327A (en) * | 2017-02-28 | 2017-05-10 | 南京工业大学 | Device and method for test of structural member three-dimensional independent loading |
| CN108254176A (en) * | 2018-02-07 | 2018-07-06 | 新誉集团有限公司 | Structural member strength testing device and double K node structural member strength test methods |
| CN109269896B (en) * | 2018-10-30 | 2021-11-30 | 山东省水利科学研究院 | Multi-angle load applying device and method |
| CN109781549B (en) * | 2019-01-31 | 2021-05-28 | 中铁六局集团有限公司 | U-shaped beam static load 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 |
| CN111579227B (en) * | 2020-05-13 | 2022-11-11 | 清华大学 | Test equipment for testing mechanical property of deep water net cage floating frame structure |
| CN114279667B (en) * | 2022-03-07 | 2022-07-12 | 成都理工大学 | Pseudo-static anti-seismic testing device and method for wallboard joint |
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| JPH1073521A (en) * | 1996-08-30 | 1998-03-17 | Tokyo Koki Seizosho:Kk | Two-axial load testing machine |
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Effective date of registration: 20200902 Address after: Room 504, Longdu Building, 376 Tianmushan Road, Xihu District, Hangzhou City, Zhejiang 310000 Patentee after: HANGZHOU POPWIL ELECTROMECHANICAL CONTROL ENGINEERING Co.,Ltd. Address before: 410082 No. 2, South Mountain Road, Yuelu District, Hunan, Changsha, Yuelu Patentee before: HUNAN University |