CN203798716U - Optical fiber based real-time detector for orthotropic steel bridge deck slab fatigue crack - Google Patents
Optical fiber based real-time detector for orthotropic steel bridge deck slab fatigue crack Download PDFInfo
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- CN203798716U CN203798716U CN201420155368.0U CN201420155368U CN203798716U CN 203798716 U CN203798716 U CN 203798716U CN 201420155368 U CN201420155368 U CN 201420155368U CN 203798716 U CN203798716 U CN 203798716U
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- light source
- optical fiber
- bridge deck
- steel bridge
- fatigue crack
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Abstract
The utility model discloses an optical fiber based real-time detector for orthotropic steel bridge deck slab fatigue crack. The optical fiber based real-time detector for orthotropic steel bridge deck slab fatigue crack comprises an optical fiber fracture line component, an access detector as well as a data transmission chip, wherein the optical fiber fracture line component is pasted on a fatigue crack sensitive area or a front area of an existing crack tip, and is directly connected with the access detector by an optical fiber; the access detector comprises a light source emitting unit, a light source receiving unit and a circuit chip; the light source emitting unit is connected with one end of the optical fiber fracture line component; the light source receiving unit is connected with the other end of the optical fiber fracture line component; the light source receiving unit is simultaneously connected with the circuit chip; the data transmission chip is connected with the circuit chip. The whole device is distinct in principle, is simple to manufacture, is convenient to use, is low in cost, and is high in precision, detects the position, the length and the spreading rate of the orthotropic steel bridge deck slab fatigue crack in real time, and can be used for detecting automatically for a long time.
Description
Technical field
The utility model relates to a kind of Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber, belongs to steel construction detection technique field.
Background technology
Orthotropic Steel Bridge Deck, due to advantages such as dead load are light, whole efficiency is high, span ability is strong, anti-seismic performance is good, is widely used in big or middle span bridge structure.But because tectonic stress complexity, weld defects difficulty are controlled and directly bear the reasons such as vehicle power effect, Orthotropic Steel Bridge Deck is also the position that fatigure failure the most easily occurs in steel bridge construction.Since Britain Severn bridge in 1971 is found the fatigue crack of steel bridge deck structure detail the earliest, there is the report of steel bridge deck fatigue crack in the states such as Germany, France, Japan, the U.S., Holland, the Orthotropic Steel Bridge Deck of China's Humen Bridge, extra large deep blue bridge, Jiangyin Bridge etc. has also detected a large amount of fatigue cracks in succession.These crackles have many general character, and conventionally appear at vertical rib with panel attachment weld, vertical rib with diaphragm plate attachment weld, diaphragm plate and panel attachment weld, indulge the concentrated above the fold of rib butt-weld equal stress.Therefore, need in Practical Project, the fatigue crack situation to in-service Orthotropic Steel Bridge Deck regularly detect and long term monitoring.
In the detection method of Orthotropic Steel Bridge Deck fatigue crack, using is at present the most directly ocular estimate, but there is certain limitation in this method, be difficult to even to arrive some fatigue crack sensitizing range such as field condition may cause testing staff, and artificial visually examine possibly cannot precisely determine the tip location of crackle etc.In addition the steel construction crackle detecting devices that also has some to utilize the principle exploitations such as energy of position drop, ultrasonic passback to form, can realize the Measurement accuracy to crack size, but these equipment need artificial execute-in-place equally, unreachable and the limited problem in operating space in subregion be may there is, also cannot detection and long term monitoring be automatically realized by Long-distance Control.
Therefore, need to design a kind of fatigue crack real-time detector, the detecting device that this original position is arranged replaces execute-in-place, realizes the real-time detection of steel bridge deck fatigue crack state and long-term monitoring automatically, guarantees security and the usability of bridge structure.
Utility model content
The purpose of this utility model is to provide a kind of Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber, realizes the real-time detection of Orthotropic Steel Bridge Deck fatigue crack and long-term monitoring automatically.
For achieving the above object, the utility model is by the following technical solutions:
An Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber, comprises fibercuts line component, path detecting device and possesses the data transmission chip of wireless communication function, wherein:
Described fibercuts line component is pasted on fatigue crack sensitizing range or the existing crack tip front region of Orthotropic Steel Bridge Deck, and is directly connected with path detecting device by optical fiber;
Described path detecting device comprises light source transmitter unit, light source receiving element and circuit chip, light source transmitter unit connects one end of fibercuts line component, light source receiving element connects the other end of fibercuts line component, and light source receiving element is connecting circuit chip simultaneously;
The described data transmission chip connecting circuit chip that possesses wireless communication function.
Preferably, in the time that the potential crack germinating for the steel bridge deck that do not ftracture is monitored, described fibercuts line component sticks on the surface of steel plate of fatigue crack sensitizing range; For the Orthotropic Steel Bridge Deck having ftractureed, described fibercuts line component sticks on the surface of steel plate of crack tip front region.
Preferably, described path detecting device comprises two light source transmitter units and two light source receiving elements, the built-in multiple fibercuts line interfaces in each unit.
Preferably, the fibercuts line that described fibercuts line component is arranged by orthogonal forms, and the two ends of every fracture line are connected to respectively the built-in interface of light source transmitter unit, light source receiving element.
Preferably, the size of described fibercuts line component is definite according to surveyed area scope, and the quantity and spacing of internal break line requires to adjust according to accuracy of detection.
Preferably, described data transmission chip is connected with circuit chip direct circuit.
Preferably, described light source transmitter unit adopts photoelectric commutator, and light source transmitter unit adopts photelectric receiver.
The utility model, by structure original position installing optical fibres fracture line assembly, path detecting device, automatically to detect alternative manual detection, is saved a large amount of labours, ensures that surveyed area is without dead angle simultaneously.
The utility model fracture line component size and internal break distance between centers of tracks and quantity can be adjusted as required and customize, and meet the requirement of different monitoring regional extent and accuracy of detection.
The hardware such as crack detection, wireless transmission that the utility model adopts is simple, cost is lower and market is widely used.
Compared with prior art, the utlity model has following beneficial effect:
The utility model adopts above-mentioned each hardware combinations to realize the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber, and whole principle of device is clear, it is simple, easy to use to make, cost is lower and precision is higher.The each hardware of this device all can adopt existing Realization of Product, without transformation, has realized the real-time detection to Orthotropic Steel Bridge Deck fatigue crack, and can be used for long-term monitoring automatically.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the layout schematic diagram of the utility model on diaphragm plate;
Fig. 3 is the layout schematic diagram of the utility model on vertical rib;
Fig. 4 is the utility model layout schematic diagram on the cover board;
In figure: 1-fibercuts line component; 2-path detecting device; 3-data transmission chip; 4-fibercuts line; 5-light source transmitter unit; 6-light source receiving element; 7-circuit chip; 8-panel; 9-deck paving; 10-weld seam; 11-vertical rib; 12-diaphragm plate.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is further explained, but following content is not used in restriction protection domain of the present utility model.
As shown in Figure 1, the present embodiment provides a kind of Orthotropic Steel Bridge Deck 8 fatigue crack real-time detectors based on optical fiber, and comprise fibercuts line component 1, path detecting device 2 and possess the data transmission chip 3 of wireless communication function, wherein:
Described fibercuts line component 1 is pasted on fatigue crack sensitizing range or the existing crack tip front region of Orthotropic Steel Bridge Deck 8, and is directly connected with path detecting device 2 by optical fiber;
Described path detecting device 2 comprises light source transmitter unit (photoelectric commutator) 5, light source receiving element (photelectric receiver) 6 and circuit chip 7, light source transmitter unit 5 connects one end of fibercuts line component 1, light source receiving element 6 connects the other end of fibercuts line component 1, light source receiving element 6 connecting circuit chip 7 simultaneously;
The described data transmission chip 3 connecting circuit chips 7 that possess wireless communication function.
As in Figure 2-4, in the present embodiment: described detecting device can be used for the not ftractureing fatigue crack initiation of decking 8 detects and monitoring, and the spread scenarios that also can be used for steel bridge deck 8 existing fatigue cracks detects and monitoring.In the time that the potential crack germinating for the steel bridge deck 8 that do not ftracture is monitored, fibercuts line component 1 is sticked on to the fatigue crack sensitizing range surface of steel plate of (as indulged the positions such as rib and panel 8 attachment welds 10, vertical rib 11 and diaphragm plate 12 attachment welds, diaphragm plate and panel 8 attachment welds, vertical rib butt-weld); For the Orthotropic Steel Bridge Deck 8 having ftractureed, fibercuts line component 1 is sticked on to the surface of steel plate of crack tip front region.
In the present embodiment: described path detecting device 2 comprises two light source transmitter units 5 and two light source receiving elements 6, built-in multiple fibercuts line 4 interfaces in each unit.
In the present embodiment: the fibercuts line 4 of described fibercuts line component 1 adopts orthogonal to arrange, and the two ends of every fracture line 4 are connected to respectively the built-in interface of light source transmitter unit 5 and light source receiving element 6.
In the present embodiment: the size of described fibercuts line component 1 can customize according to surveyed area scope, the quantity and spacing of fibercuts line 4 also can require to adjust according to accuracy of detection.
In the present embodiment: described circuit chip 7 receives external detection instruction by data transmission chip 3, or automatically send instruction exciting light source transmitter unit 5 with certain hour interval, realize the real-time detection of fibercuts situation and long-term monitoring automatically.Described data transmission chip 3 is connected with circuit chip 7 direct circuits, and data transmission chip 3 possesses wireless communication function, can realize the Wireless Data Transmission between computing machine.
When the above-mentioned detecting device of the present embodiment uses, operate according to following steps:
Step 1: for uncracked Orthotropic Steel Bridge Deck 8, fibercuts line component 1 is sticked on to vertical rib and panel 8 attachment welds, vertical rib and diaphragm plate attachment weld, diaphragm plate and panel 8 attachment welds, indulges the surface of steel plate of the fatigue crack sensitizing ranges such as rib butt-weld; For the Orthotropic Steel Bridge Deck 8 having ftractureed, fibercuts line component 1 is sticked on to the surface of steel plate of crack tip front region;
Near step 2: path detecting device 2 is sticked on fibercuts line component 1 in the lump together with data transmission chip 3;
Step 3: the two ends of fibercuts line 4 are accessed respectively in the built-in interface of light source transmitter unit 5 and light source receiving element 6;
Step 4: utilize internal battery to start whole detecting device, data transmission chip 3 and computer radio successful connection.
The utility model can be sent to computing machine by detection data (comprising fracture position numbering and the rupture time etc. of fibercuts line component 1) by above-mentioned data transmission chip 3 and show, certainly, also can further expand function, send single by computing machine and detect in real time instruction or the automatic Monitoring instruction of continuous several times, realize multi-purpose detection, such as information such as the position of further adding up by computing machine, analyzing and processing obtains fatigue crack, length and spreading rates, draw crack pattern etc.The concrete expansion content of these servers does not belong to the necessary composition of the utility model.The utility model is mainly the Orthotropic Steel Bridge Deck 8 fatigue crack detecting devices of above-mentioned each hardware composition.
The utility model, by structure original position, crack detection parts being installed, automatically to detect alternative manual detection, is saved a large amount of labours, ensures that surveyed area is without dead angle simultaneously.The crack detection adopting and data transmission hardware are made simply, cost is lower and market is widely used.
Above embodiment is only for illustrating content of the present utility model, and in addition, the utility model also has other embodiment.But all employings are equal to replaces or the technical scheme that forms of equivalent deformation mode all drops in protection domain of the present utility model.
Claims (7)
1. the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber, the data transmission chip that it is characterized in that comprising fibercuts line component, path detecting device and possess wireless communication function, wherein:
Described fibercuts line component is pasted on fatigue crack sensitizing range or the existing crack tip front region of Orthotropic Steel Bridge Deck, and is directly connected with path detecting device by optical fiber;
Described path detecting device comprises light source transmitter unit, light source receiving element and circuit chip, light source transmitter unit connects one end of fibercuts line component, light source receiving element connects the other end of fibercuts line component, and light source receiving element is connecting circuit chip simultaneously;
The described data transmission chip connecting circuit chip that possesses wireless communication function.
2. the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber according to claim 1, it is characterized in that: in the time that the potential crack germinating for the steel bridge deck that do not ftracture is monitored, described fibercuts line component sticks on the surface of steel plate of fatigue crack sensitizing range; For the Orthotropic Steel Bridge Deck having ftractureed, described fibercuts line component sticks on the surface of steel plate of crack tip front region.
3. the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber according to claim 1, it is characterized in that: described path detecting device comprises two light source transmitter units and two light source receiving elements the built-in multiple fibercuts line interfaces in each unit.
4. the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber according to claim 3, it is characterized in that: the fibercuts line that described fibercuts line component is arranged by orthogonal forms, the two ends of every fracture line are connected to respectively the built-in interface of light source transmitter unit, light source receiving element.
5. according to the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber described in claim 1-4 any one, it is characterized in that: the size of described fibercuts line component is definite according to surveyed area scope, the quantity and spacing of internal break line requires to adjust according to accuracy of detection.
6. according to the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber described in claim 1-4 any one, it is characterized in that: described data transmission chip is connected with circuit chip direct circuit.
7. according to the Orthotropic Steel Bridge Deck fatigue crack real-time detector based on optical fiber described in claim 1-4 any one, it is characterized in that: described light source transmitter unit adopts photoelectric commutator, light source transmitter unit adopts photelectric receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420155368.0U CN203798716U (en) | 2014-04-01 | 2014-04-01 | Optical fiber based real-time detector for orthotropic steel bridge deck slab fatigue crack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420155368.0U CN203798716U (en) | 2014-04-01 | 2014-04-01 | Optical fiber based real-time detector for orthotropic steel bridge deck slab fatigue crack |
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| CN203798716U true CN203798716U (en) | 2014-08-27 |
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| CN201420155368.0U Expired - Fee Related CN203798716U (en) | 2014-04-01 | 2014-04-01 | Optical fiber based real-time detector for orthotropic steel bridge deck slab fatigue crack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606617A (en) * | 2016-01-06 | 2016-05-25 | 武汉理工大学 | Device and method for measuring fatigue crack propagation rule of CFRP reinforced steel structure |
| CN114965007A (en) * | 2022-07-31 | 2022-08-30 | 西北工业大学 | Crack tip plastic zone monitoring device and method |
-
2014
- 2014-04-01 CN CN201420155368.0U patent/CN203798716U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606617A (en) * | 2016-01-06 | 2016-05-25 | 武汉理工大学 | Device and method for measuring fatigue crack propagation rule of CFRP reinforced steel structure |
| CN114965007A (en) * | 2022-07-31 | 2022-08-30 | 西北工业大学 | Crack tip plastic zone monitoring device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20170401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |