CN203224344U - Analog device for accidental damages of bridge structures - Google Patents
Analog device for accidental damages of bridge structures Download PDFInfo
- Publication number
- CN203224344U CN203224344U CN 201320220568 CN201320220568U CN203224344U CN 203224344 U CN203224344 U CN 203224344U CN 201320220568 CN201320220568 CN 201320220568 CN 201320220568 U CN201320220568 U CN 201320220568U CN 203224344 U CN203224344 U CN 203224344U
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- spring
- damage
- analogue means
- backing plate
- additional backing
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Abstract
The utility model relates to an analog device for accidental damages of bridge structures. The analog device comprises springs, battery pack and voltmeter for measuring voltages of the springs; wherein one end of each spring is fixed on a top flange plate of a beam and the other end of the spring is fixed on an additional backing plate which is on the bottom of a bottom flange plate of the beam; the battery pack is in series connection with the springs; and damage gaps are arranged on the bottom flange plate of the beam and on the positions where the springs are fixed; and the springs, the battery pack and the voltmeter form a closed circuit. The analog device is concise in design and convenient for preparation, can be used to verify the advantages, disadvantages and applicability of various structure health detection methods, and is accurate in recording bridge structure damage time.
Description
Technical field
The utility model relates to the apparatus field of bridge structural health monitoring and damage check, relates in particular to a kind of analogue means of bridge structure burst damage.
Background technology
Along with China's reform and opening-up and economic sustained and rapid development, newly-built bridge quantity rapidly increases in recent years.But the traffic volume of goods transported also sharply increases, and the new demand, new contradiction such as travel of hypervelocity, overweight vehicle is more and more outstanding.These bridge complex structures are subjected to factor affecting such as environmental corrosion, disaster, human factor and the fatigure failure of structure own in-service, tend to produce either large or small damage, threaten the operation security of bridge structure, even cause catastrophic accident.
Whether Bridge Structural Damage has moment property and not by perceptibility, is difficult to the precognition bridge usually and in use damages.And people always expect generation and the development of structural damage are accomplished to check erroneous ideas at the outset, and prevent trouble before it happens.
At present, often pass through the structural response signal recognition structure damage of damage front and back, but at the structural damage initial stage, damage of structure is less, the variation of damage front and back structural response signal and index is less, often is difficult to the degree of impairment of recognition structure.Simultaneously, current method has often been ignored a critical event, i.e. in the Bridge Structural Damage moment, structural behaviour can be undergone mutation, and structural response signal and index thereof also can be undergone mutation.
The utility model content
The technical problems to be solved in the utility model provides a kind of analogue means of bridge structure burst damage, can be used for verifying quality and the applicability of various structural health detection methods, and the structural damage of record is constantly comparatively accurate.
For solving the problems of the technologies described above, the utility model provides the analogue means of a kind of bridge structure burst damage, this analogue means comprise that an end is fixed on the beam top flange plate and the other end is fixed on spring on the additional backing plate of lower flange of girder listrium bottom, with spring series connected battery group be used for the voltage table of measuring spring voltage; The lower flange of girder listrium of fixing spring position is provided with the damage breach; Spring, electric battery and voltage table are formed closed circuit.
Optionally, totally two on spring is disposed on respectively between beam top flange plate and the lower flange of girder listrium.
Optionally, spring is fixedlyed connected with additional backing plate by safety pin.
Optionally, the material of additional backing plate is metallic steel.
Optionally, the width of damage breach is 5mm, and the degree of depth is 5-10mm.
Optionally, the width of additional backing plate is 5-20mm, and length is 10 times of damage gap width.
Compared with prior art, the utility model design is succinct, easy to prepare, by spring, electric battery and the voltage table that arranges, bridge structure burst damage and damage can be simulated more accurately constantly, quality and the applicability of various monitoring structural health conditions and damage detecting method can be verified easily.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the connection diagram of spring of the present utility model and electric battery and voltage table.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, the utility model provides the analogue means of a kind of bridge structure burst damage, analogue means comprise that an end is fixed on the beam top flange plate 1 and the other end is fixed on spring 3 on the additional backing plate 7 of lower flange of girder listrium 5 bottoms, with spring 3 series connected battery groups 4 be used for the voltage table 2 of measuring spring 3 voltages; The lower flange of girder listrium 5 of fixing spring 3 positions is provided with damage breach 6; Spring 3, electric battery 4 and voltage table 2 are formed closed circuit.Preferably, totally two on spring 3 is disposed on respectively between beam top flange plate 1 and the lower flange of girder listrium 5, and better the burst damage of accurate analog record bridge structure and damage are constantly.Preferably, spring 3 is fixedlyed connected with additional backing plate 7 by safety pin, can extract safety pin easily out and make additional backing plate 7 break away from spring 3, the moment that accurate recording spring 3 discharges.Preferably, the material of additional backing plate 7 is metallic steel, can simulate bridge structure more accurately.Preferably, the width of damage breach 6 is 5mm, and the degree of depth is 5-20mm, and the width of additional backing plate 7 is 5-20mm, and length is 10 times of damage breach 6 width.
At first the lower flange of girder listrium 5 at bridge cuts two small gaps, as damage breach 6; Between the beam top flange plate 1 of bridge and lower flange of girder listrium 5, vertically install at interval and two springs 3 of tensioning then, spring 3 one ends are fixed on the beam top flange plate 1 of bridge, the other end is fixed on safety pin on the additional backing plate 7 of lower flange of girder listrium 5 bottoms, and additional backing plate 7 adopts the metallic steel material; The straight-line segment of spring 3 directly extend into beam top flange plate 1, lower flange of girder listrium 5 and additional backing plate 7, and the thickness of additional backing plate 7 is identical with the thickness of beam top flange plate 1 and lower flange of girder listrium 5, and additional backing plate 7 is close to lower flange of girder listrium 5; Additional backing plate 7 width equal to damage breach 6 degree of depth, and length equals to damage 10 times of breach 6 width; The outside of additional backing plate 7 is concordant with lower flange of girder listrium 5 outsides.In the bridge vibration process safety pin is pulled out to discharge prestretching spring 3 fast, additional backing plate 7 comes off, and the rigidity of bridge is undergone mutation constantly at this, and namely bridge damages suddenly.
In order accurately to set damage constantly, every group of spring formed an electronic circuit, safety pin is as switch, spring 3 is as resistance, use electric battery 4 service voltages, in the bridge vibration process, the voltage acute variation of measuring spring 3 when safety pin is pulled out, in the moment that the accurate recording spring discharges, namely structural damage constantly.
The utility model by safety pin is pulled out to discharge the prestretching spring fast, comes off additional billet in the bridge vibration process, the simulation bridge structure is damaged suddenly, simulates the burst degree of impairment in the bridge structure vibration processes preferably, and method is simple, easy to make, with low cost; Can be used to verify quality and the applicability of various structure health monitoring methods and damage detecting method; The electronic circuit that employing is formed by every group of spring, measuring voltage acute variation when safety pin is pulled out, the spring that records release constantly is that the structural damage of bridge is constantly comparatively accurate.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. the analogue means of bridge structure burst damage is characterized in that: described analogue means comprise that an end is fixed on the beam top flange plate and the other end is fixed on spring on the additional backing plate of lower flange of girder listrium bottom, with spring series connected battery group be used for the voltage table of measuring spring voltage; Lower flange of girder listrium at fixing described spring position place is provided with the damage breach; Described spring, electric battery and voltage table are formed closed circuit.
2. analogue means according to claim 1, it is characterized in that: totally two on described spring is disposed on respectively between beam top flange plate and the lower flange of girder listrium.
3. analogue means according to claim 1, it is characterized in that: described spring is fixedlyed connected with additional backing plate by safety pin.
4. analogue means according to claim 3, it is characterized in that: the material of described additional backing plate is metallic steel.
5. analogue means according to claim 1, it is characterized in that: the width of described damage breach is 5mm, the degree of depth is 5-20mm.
6. according to the described analogue means of the arbitrary claim of claim 1 to 5, it is characterized in that: the width of described additional backing plate is 5-20mm, and length is 10 times of damage gap width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220568 CN203224344U (en) | 2013-04-13 | 2013-04-13 | Analog device for accidental damages of bridge structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220568 CN203224344U (en) | 2013-04-13 | 2013-04-13 | Analog device for accidental damages of bridge structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203224344U true CN203224344U (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320220568 Expired - Fee Related CN203224344U (en) | 2013-04-13 | 2013-04-13 | Analog device for accidental damages of bridge structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203224344U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196645A (en) * | 2013-04-13 | 2013-07-10 | 郑州长发电子科技有限公司 | Bridge structure sudden damage stimulated device |
| CN104122109A (en) * | 2014-08-01 | 2014-10-29 | 山西省交通科学研究院 | System for identifying rigidity damage of bridge structure |
-
2013
- 2013-04-13 CN CN 201320220568 patent/CN203224344U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196645A (en) * | 2013-04-13 | 2013-07-10 | 郑州长发电子科技有限公司 | Bridge structure sudden damage stimulated device |
| CN104122109A (en) * | 2014-08-01 | 2014-10-29 | 山西省交通科学研究院 | System for identifying rigidity damage of bridge structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131002 Termination date: 20180413 |