CN201926464U - Single-tower cable-stayed bridge test model based on damage identification - Google Patents
Single-tower cable-stayed bridge test model based on damage identification Download PDFInfo
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- CN201926464U CN201926464U CN 201020597495 CN201020597495U CN201926464U CN 201926464 U CN201926464 U CN 201926464U CN 201020597495 CN201020597495 CN 201020597495 CN 201020597495 U CN201020597495 U CN 201020597495U CN 201926464 U CN201926464 U CN 201926464U
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Abstract
The utility model relates to a single-tower cable-stayed bridge test model based on damage identification, which is suitable for tests of and scientific researches on bridges. A single-tower cable-stayed bridge test model part comprises a main beam, a main tower, stay cables, supports, a base and supporting stand columns which are assembled together. The main beam is connected with the main tower in a squeezing way. The supporting stand columns are arranged at the junction between the main tower and the main beam at a position below the main beam and are supported on the base. The two ends of the main beam are connected with the base through the supports. The main tower is connected with the stay cables by using fixtures. The stay cables are connected with the main beam. The main tower is connected with the base by using bolts. The main beam consists of sections with different lengths in a splicing way. The lengths and the depths of the sections are set according to practical requirements. The single-tower cable-stayed bridge test model not only can complete similar model tests but also can realize the experimental researches on the damage identification method of the structure of a cable-stayed bridge, and solves the problem that cable tension is difficult to measure during the model tests of the cable-stayed bridge.
Description
Technical field
The utility model relates to a kind of single pylon cable stayed bridge model test model based on damage identification that is applicable to the bridge testing scientific research.
Background technology
Model investigation is science of bridge building teacher and bridge scientific worker so as to determining and exploring one of important means of bridge complex structural stress state.Carrying out model test, primarily is to design test model earlier.At the cable-stayed bridge structure, domestic model investigation is primarily aimed at some important especially big cable-stayed bridge structure and launches, purpose is bridge security and a reliability after verifying the security of bridge construction process and becoming bridge, the correctness of check design theory parameter and Theoretical Calculation.The present Research of cable-stayed bridge model test is as follows at present:
1,1999 the 3rd phases " Changsha Traffic College journal " have been introduced a kind of large-scale three pylon cable-stayed bridge aluminium alloy model test systems.This model with Yueyang Dongting Lake Bridge according to 1: 30 ratio reduced scale, the test model girder has adopted aluminium alloy sections casting technique, on testing table, carry out the mode of assembly unit, bridge tower has also adopted the technology of segmentation casting assembly unit, adopt the pre embedded bolt technology to having solved the difficult problem in drag-line and bridge tower location, adopt hollow aluminium bar to set off simultaneously, guaranteed the mouldability and the intensity of core as quartz sand core.Drag-line adopts high tensile steel wire, and the Suo Li test then adopts device for measuring force to be connected on mode in the rope.
2,2002 the 2nd phases " science of bridge building " have been introduced the Changjiang river, Jing Zhou vehicular bridge overall model test.This model is a double tower double plane cable stayed bridge, and girder adopts aluminium sheet, and top board and main rib adopt sticking bolt combination to make, and king-tower adopts Q
235The steel welding, suspension cable adopts high tensile steel wire, and the Suo Li test adopts the mode of sticking obedient resistance strain gage on drag-line to carry out.
3,2008 the 1st phases " world's bridge " have been introduced the slow test model of Lan Qi Song Hua River, Jilin grand bridge.This model comprises girder, king-tower, abutment pier and suspension cable.Girder is divided into assembly unit after 15 sections manufacturings, adopts gluing binding rivet to be formed by connecting between main beam member and the girder sections.Bridge tower adopts the Q235B structural carbon steel to be divided into upper, middle and lower and is welded for three sections.Suspension cable is in series by upper and lower anchor, middle linkage section, device for measuring force and rope force adjusting device.
Above-mentioned model bridges version is multitower (three towers, Liang Ta) structure, the connected mode of the manufacturing process employing casting of girder or sticking riveting, sticking bolt, make complicated, be not easy to the replacing (can not damage simulation) of member, the Suo Li test adopts the series connection device for measuring force in drag-line, rigidity to drag-line has caused change to a certain degree, and the mode of sticking obedient foil gauge difficult quality guarantee then can not be monitored for a long time on drag-line.
Along with the bridge military service phase increases, more and more bridge occurs or enters the damage military service stage, and the damage of bridge structure identification at present is research emphasis and hot issue, but present stage does not still have the single pylon cable stayed bridge test model at damage identification.
The utility model content
The purpose of this utility model just is to provide a kind of single pylon cable stayed bridge test model that is used to damage identification at the deficiencies in the prior art, not only can finish the function of model test of the same type based on the utility model, the various faulted conditions that while the utility model can be simulated the cable-stayed bridge structure easily, thus realization is to the damnification recognition method research experiment of cable-stayed bridge structure; And can under the situation that does not change drag-line rigidity, can realize in real time, measure Suo Li efficiently based on the utility model, solve the difficult problem of cable force measurement difficulty in the cable-stayed bridge model test.
The technical solution of the utility model is:
The utility model comprises single pylon cable stayed bridge test model part and the cable tension test system that is arranged on the model;
Described single pylon cable stayed bridge test model partly comprises girder, king-tower, suspension cable, bearing, pedestal and the support post that is assembled together.Girder adopts extruding to be connected with king-tower, girder below, Ta Liang junction is provided with support post and is supported on the pedestal, and the two ends of girder are connected with pedestal by bearing, and king-tower adopts anchor clamps to connect with being connected of suspension cable, drag-line is connected with girder, and king-tower adopts bolt to be connected with pedestal; Described girder is formed by the section assembling of different length specification, and the specification length of each sections and thickness are provided with according to actual the requirement.
Described cable tension test system comprises anchorage screw, levelling piece, pressure rings sensor, setting nut: anchorage screw is connected with the suspension cable of model, the bottom of anchorage screw is passed girder, levelling piece, pressure rings sensor successively, and be connected on the girder by setting nut, levelling piece, pressure rings sensor place girder edge of a wing downside.Its principle of work is in when test the pressure rings sensor to be connected with lead with testing tool, then by tightening setting nut, and drag-line elongation, pressure rings sensor pressurized, the Suo Li value of the test data calculating suspension cable by the pressure rings sensor.In when test the pressure rings sensor is connected with lead with testing tool, can be in real time, efficiently stay cable force is measured.
Girder described in the utility model adopts aluminum alloy materials, section form adopts box, each sections is formed by connecting by top board, web, base plate and ribbed stiffener respectively, the simulation of source of damage adopts the method that changes the sections thickness of slab to realize, can simulate diverse location and different big or small damage easily by the change of sections position, sections length, and the difference of replacing thickness of slab can be simulated the difference of same position degree of injury.Described king-tower is the H type, adopts i shaped steel to be welded; Suspension cable adopts the high tensile steel wire rope; Pedestal adopts shaped steel to be welded.Pressure rings sensor described in the described cable tension test system constitutes for 4 resistance strain gages of sticking card on a pressure rings; The pressure rings material of pressure rings sensor adopts aluminium alloy, and the cross section be an annular, and wall thickness and ring coca are according to the useful range calculating of model stayed-cable force of stayed-cable bridge and resistance strain gage and decide.
The beneficial effects of the utility model are:
This model is compared with domestic test model of the same type, has following advantage:
1, this model can satisfy the requirement of multiple test function.Not only can finish the function of model test of the same type, it is the model test of the dynamic and static power performance of cable-stayed bridge structure, the security of design theory, bridge, reliability etc. are verified, the various faulted conditions that this model of while can be simulated the cable-stayed bridge structure easily are to the damnification recognition method research experiment of cable-stayed bridge structure;
2, the model assembling is simple, easy operating;
3, model can be realized in real time under the situation that does not change drag-line rigidity, measure Suo Li efficiently, has solved the difficult problem of cable force measurement difficulty in the cable-stayed bridge model test.
Description of drawings
Fig. 1-1 is a test model structural plan of the present invention.
Fig. 1-2 is the left view of Fig. 1-1.
Fig. 2 divides the floor plan synoptic diagram for the girder sections.
Fig. 3 is the girder section organigram.
Fig. 4-1 and Fig. 4-2 is the base construction synoptic diagram.
Fig. 5 is the structural representation of cable tension test system.
1. girders among the figure, 2. king-tower, 3. suspension cable, 4. bearing, 5. pedestal, 6, support post, 7. girder sections (1), 8. girder sections (2), 9. girder sections (3), 10. girder sections (4), 11. girder sections (5), 12. top boards, 13. base plates, 14. webs, 15. ribbed stiffener, 16. coupling bolts, 17. chord members, 18. montants, 19. the end chord member, 20. web members, 21. end web members, 22. screens screws, 23. anchorage screw, 24. levelling pieces, 25. pressure rings sensors, 26. setting nuts
Embodiment
Below in conjunction with drawings and Examples the present invention is further specified, but not as to restriction of the present utility model.
Mainly comprise the single pylon cable stayed bridge test model and be arranged on cable tension test system on the single pylon cable stayed bridge test model as the utility model as described in the accompanying drawing 1 to 5.As shown in Figure 1, the single pylon cable stayed bridge test model mainly is made up of girder 1, king-tower 2, suspension cable 3, bearing 4, pedestal 5 and support post 6.Girder 1 adopts extruding to be connected with king-tower 2, and girder 1 below, Ta Liang junction is established 3 root posts and supported 6 on pedestal 5, and girder 1 two ends are connected with pedestal 5 by bearing 4.King-tower 2 adopts anchor clamps to connect with being connected of suspension cable 3, and drag-line 3 adopts anchorage screw 23 to be connected with girder 1.King-tower 2 and pedestal 5 are connected by bolt.Girder 1 has adopted the sections 7,9,9,10,11 of five kinds of specification length (being respectively: sections (1) 0.18m, sections (2) 0.24m, sections (3) 0.36m, sections (4) 0.48m, sections (5) 0.14m) assembled, as shown in Figure 2.The sections of different size length can be simulated the damage of diverse location, different sizes easily, and the position of sections can exchange arbitrarily.Fig. 3 obtains cross-sectional configuration for girder 1, material adopts aluminium alloy, top board 12 is connected by coupling bolt 16 with base plate 13, top board 12 is connected by ribbed stiffener 15 usefulness coupling bolts 16 with web 14 with web 14, base plate 13, top board 12 can be selected different size for use, and (thickness is 3mm, 2mm, 1mm etc.), realize the simulation of degree of injury by changing thickness of slab.Fig. 4 is the structural drawing of pedestal 5, and pedestal 5 adopts truss form, is welded member 17 by chord member 17, montant 18, web member 20 and end chord member 19, end web member 21---21 all adopt shaped steel.
Be illustrated in figure 5 as cable tension test system in the utility model, this system is mainly by screens screw 22, anchorage screw 23, and levelling piece 24, pressure rings sensor 25, setting nut 26 constitutes.Anchorage screw 23 is connected with suspension cable 3 by screens screw 22, tighten screens screw 22 after, drag-line 3 is linked as integral body with anchorage screw 23.Anchorage screw 23 adopts the light face at levelling piece 24 with top, to reduce the friction with girder 1 contact position, levelling piece 22 is made according to the suspension cable 3 and the angle grouping of girder 1, totally 18 groups, pressure rings sensor 25 forms for 4 resistance strain gages of sticking card on a pressure rings, the pressure rings material of pressure rings sensor adopts aluminium alloy, and the cross section be an annular, and wall thickness and ring coca are according to the useful range calculating of model stayed-cable force of stayed-cable bridge and resistance strain gage and decide.Its principle of work is by tightening setting nut 26, suspension cable 3 elongations, the pressure rings of pressure rings sensor 25 is in pressured state, pressure rings sensor 25 connects testing tool, can select full-bridge or semi-bridge method during test, just can calculate the Suo Li value of suspension cable by the test data of pressure rings sensor 25.
Claims (4)
1. single pylon cable stayed bridge test model based on damage identification is characterized in that: it comprises single pylon cable stayed bridge test model part and is arranged on cable tension test system on the model;
Described single pylon cable stayed bridge test model partly comprises girder, king-tower, suspension cable, bearing, pedestal and the support post that is assembled together.Girder adopts extruding to be connected with king-tower, girder below, Ta Liang junction is provided with support post and is supported on the pedestal, and the two ends of girder are connected with pedestal by bearing, and king-tower adopts anchor clamps to connect with being connected of suspension cable, drag-line is connected with girder, and king-tower adopts bolt to be connected with pedestal; Described girder is formed by the section assembling of different length specification, and the specification length of each sections and thickness are provided with according to actual the requirement.
Described cable tension test system comprises anchorage screw, levelling piece, pressure rings sensor, setting nut: anchorage screw is connected with the suspension cable of model, the bottom of anchorage screw is passed girder, levelling piece, pressure rings sensor successively, and be connected on the girder by setting nut, levelling piece, pressure rings sensor place girder edge of a wing downside.Its principle of work is in when test the pressure rings sensor to be connected with lead with testing tool, then by tightening setting nut, and drag-line elongation, pressure rings sensor pressurized, the Suo Li value of the test data calculating suspension cable by the pressure rings sensor.In when test the pressure rings sensor is connected with lead with testing tool, can be in real time, efficiently stay cable force is measured.
2. the single pylon cable stayed bridge test model based on damage identification according to claim 1 is characterized in that: described girder adopts aluminum alloy materials, and section form adopts box; Described king-tower is the H type, adopts i shaped steel to be welded; Suspension cable adopts high strength wire rope; Pedestal adopts shaped steel to be welded.
3. the single pylon cable stayed bridge test model based on damage identification according to claim 1, it is characterized in that: described each sections is formed by connecting by top board, web, base plate and ribbed stiffener respectively.
4. the single pylon cable stayed bridge test model based on damage identification according to claim 1 is characterized in that: pressure rings sensor described in the described cable tension test system constitutes for 4 resistance strain gages of sticking card on a pressure rings; The pressure rings material of pressure rings sensor adopts aluminium alloy, and the cross section be an annular, and wall thickness and ring coca are according to the useful range calculating of model stayed-cable force of stayed-cable bridge and resistance strain gage and decide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201020597495 CN201926464U (en) | 2010-11-09 | 2010-11-09 | Single-tower cable-stayed bridge test model based on damage identification |
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| CN 201020597495 CN201926464U (en) | 2010-11-09 | 2010-11-09 | Single-tower cable-stayed bridge test model based on damage identification |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829990A (en) * | 2012-09-03 | 2012-12-19 | 天津大学 | Assembled two-tower cable-stayed bridge damage identification test model system |
| CN104900136A (en) * | 2015-05-29 | 2015-09-09 | 长沙理工大学 | Cable stayed bridge for test, and mounting method |
| CN114692467A (en) * | 2022-04-18 | 2022-07-01 | 哈尔滨工业大学 | Intelligent rapid cable adjusting method for reasonable bridge forming state of three-tower cable-stayed bridge |
| CN114858382A (en) * | 2022-04-26 | 2022-08-05 | 西南交通大学 | Cable-stayed bridge modal transition test testing device and modal transition analysis method |
-
2010
- 2010-11-09 CN CN 201020597495 patent/CN201926464U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829990A (en) * | 2012-09-03 | 2012-12-19 | 天津大学 | Assembled two-tower cable-stayed bridge damage identification test model system |
| CN102829990B (en) * | 2012-09-03 | 2014-08-27 | 天津大学 | Assembled two-tower cable-stayed bridge damage identification test model system |
| CN104900136A (en) * | 2015-05-29 | 2015-09-09 | 长沙理工大学 | Cable stayed bridge for test, and mounting method |
| CN104900136B (en) * | 2015-05-29 | 2018-02-27 | 长沙理工大学 | A kind of experiment cable-stayed bridge and installation method |
| CN114692467A (en) * | 2022-04-18 | 2022-07-01 | 哈尔滨工业大学 | Intelligent rapid cable adjusting method for reasonable bridge forming state of three-tower cable-stayed bridge |
| CN114858382A (en) * | 2022-04-26 | 2022-08-05 | 西南交通大学 | Cable-stayed bridge modal transition test testing device and modal transition analysis method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
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| CX01 | Expiry of patent term |