CN104374597A - Railway cable-stayed bridge test model - Google Patents
Railway cable-stayed bridge test model Download PDFInfo
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- CN104374597A CN104374597A CN201410753927.2A CN201410753927A CN104374597A CN 104374597 A CN104374597 A CN 104374597A CN 201410753927 A CN201410753927 A CN 201410753927A CN 104374597 A CN104374597 A CN 104374597A
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Abstract
The invention relates to a railway cable-stayed bridge test model. The railway cable-stayed bridge test model comprises a railway cable-stayed bridge body, rigid bridge connectors and a steel rail, wherein the steel rail is paved on the railway cable-stayed bridge body and used for a test car to run thereon. The railway cable-stayed bridge body is manufactured sectionally and are combined and assembled by the rigid bridge connectors. A test loading device used for simulating static and dynamic load of a cable-stayed bridge and a data acquiring device used for acquiring test data are mounted on the railway cable-stayed bridge body. The railway cable-stayed bridge test model simulates static and dynamic load on the cable-stayed bridge using the test loading device and acquires bridge test data under the action of the static and dynamic load by the data acquiring device in time. The railway cable-stayed bridge test model can simulate structural responses of the cable-stayed bridge under working conditions of different loads and provides reference test data for bridge structure design and long-term and effective operation of the cable-stayed bridge is ensured.
Description
Technical field
The present invention relates to bridge mechanics simulation test device technical field, be specifically related to a kind of Railway Cable-stayed Bridge test model.
Background technology
Cable-stayed bridge is a kind of version being widely used in science of bridge building.Under new traffic situation, guarantee that long-term, the effective operation of cable-stayed bridge is particularly important, therefore need to carry out test experiments to cable-stayed bridge.
But test experiments is carried out at scene can be affected traffic and pass through, and Expenses Cost is higher.Indispensable means during the new problem occurred during model test becomes the scientific research of solution cable-stayed bridge and designs, therefore need a kind of test model can simulating cable-stayed bridge well to study.And the mode construction that existing Cable-stayed Bridge Model all adopts disposable integral to build, such form of construction work is very complicated, and mostly test is to carry out in indoor, and need to carry out moving model and tearing open, change rope to model, one-piece casting can make test very inconvenient; Suspension cable generally all adopts rigidity anchored end by suspension cable anchoring, is unfavorable for studying the impact of different anchorage style on suspension cable and bridge vibration; Model test is generally only limitted to slow test or dynamic test, being limited in scope for experimental study.
Therefore study and a kind ofly design and construct that reasonable, easy to operate, data precision is reliable, perfect in shape and function, a kind of cable-stayed bridge test model that experimental cost is low become problem demanding prompt solution.
Summary of the invention
In order to make up the defect of prior art, patent of the present invention provides a kind of Railway Cable-stayed Bridge test model, better for the model experiment of cable-stayed bridge provides convenient, can provide more effective means for furtheing investigate the research of Cable-Stayed Bridge Structure vibration problem.Solving existing test model makes complicated, experimentation inconvenience, and experimental study such as to be limited in scope at the technical matters.
In order to realize above-mentioned technical purpose, the technical scheme of patent of the present invention is: a kind of test model of Railway Cable-stayed Bridge, comprises Railway Cable-stayed Bridge body, pontic rigid connector, is layed in the rail for instruction carriage operation on Railway Cable-stayed Bridge body.Railway Cable-stayed Bridge body adopts sectional making, is formed by pontic rigid connector assembling combination; The experiment loading unit for simulating cable-stayed bridge static(al) and dynamic load and the data collector for acquisition test data Railway Cable-stayed Bridge body be equipped with.
Preferably, slow test charger comprise reaction beam on the preformed hole being arranged on Railway Cable-stayed Bridge surface, be anchored at the ground anchor beam on ground, for apply static load lifting jack and for the distribution beam of distributing loading force and the screw rod for connecting reaction beam and ground anchor beam; The stiff end of lifting jack is fixed on reaction beam, and the output terminal of lifting jack connects distribution beam, and distribution beam is assigned to the bridge floor of Railway Cable-stayed Bridge for the load applied by lifting jack.
Preferably, distribution beam adopts three grades of distribution beam, and three grades of distribution beam comprise the first distribution beam, the second distribution beam and the 3rd distribution beam.The output terminal of lifting jack is connected in the first distribution beam, and the first distribution beam two ends connect respectively by the second distribution beam and loaded in the 3rd distribution beam by load, and the 3rd distribution beam is arranged on the bridge floor of Railway Cable-stayed Bridge; First distribution beam and the second distribution beam are arranged vertically mutually, and the second distribution beam and the 3rd distribution beam are arranged vertically mutually.
Preferably, Railway Cable-stayed Bridge comprises and erects the king-post arranged, horizontally disposed girder, connects suspension cable between king-post and girder, from the bridge pier of bottom support girder and the base of the bearing be arranged on bridge pier and fixed tower column bottom; Steel rail laying is on girder surface.
Preferably, centre-hole jack for adjusting inclined guy cable stretching power and one piece of triangular concrete block with holes is provided with in the suspension cable anchored end being positioned at girder place, the inclined-plane of concrete block is fitted with anchoring billet, suspension cable is through triangular concrete block and anchoring billet; The first end of suspension cable is anchored on bridge tower, and the second end of suspension cable is anchored on girder.
Preferably, data collector comprise be located at suspension cable the second end in process of the test in real time monitoring suspension cable tension variations punching force snesor, be located on girder and/or king-post for test in process of the test girder and/or king-post shift value displacement transducer, be located on girder and/or king-post for testing the acceleration transducer of the vibration acceleration of girder and/or king-post in process of the test.
Preferably, girder comprises at least two sections, connects into entirety between each sections by rigid connector; Rigid connector comprises end plate, peg and ribbed stiffener, and end plate first side is burn-on for the peg with the anchor connection of girder sections; End plate second side is left for adjacent two sections are carried out bolted bolt hole; End plate is provided with at least two pieces, is welded in groups between end plate with end plate by ribbed stiffener.
Preferably, at least one end of suspension cable adopt be articulated and connected, be rigidly connected, one in varied rigid link, and suspension cable can be dismantled and change.
Preferably, be provided with damper between suspension cable and Railway Cable-stayed Bridge body, damper is connected with suspension cable by parrel, and is supported by the bearing support be cemented in Railway Cable-stayed Bridge.
Preferably, rail is arranged with elastic cushion block, and rail is fixed on Railway Cable-stayed Bridge body by fastener.
Beneficial effect of the present invention is:
Railway Cable-stayed Bridge test model of the present invention, is loaded, by gathering in time the loading data of static(al) and power by experiment loading unit static loading that is virtually reality like reality and power on pontic; The structural response of cable-stayed bridge under different load case can be simulated, for bridge structure design provides test reference data, thus guarantee that cable-stayed bridge is runed for a long time, effectively.
Below in conjunction with accompanying drawing, patent of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the perspective view of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Fig. 2 is the side structure schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Fig. 3 is the Facad structure schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Fig. 4 is the Railway Cable-stayed Bridge test model road test schematic diagram of the embodiment of the present invention;
Fig. 5 is that the Railway Cable-stayed Bridge test model of the embodiment of the present invention removes road test schematic diagram after rope;
Fig. 6 is the static test schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Fig. 7 is the structural representation of the rigid connector of the embodiment of the present invention;
Fig. 8 is the schematic diagram of the girder junction of the embodiment of the present invention;
Fig. 9 is the structural representation of the anchored end of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Figure 10 is the front schematic view of the static load charger of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Figure 11 is the side schematic view of the static load charger of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Figure 12 is the hinged schematic diagram in suspension cable end of the embodiment of the present invention;
Figure 13 is that the suspension cable end of the embodiment of the present invention is rigidly connected schematic diagram;
Figure 14 is the suspension cable end varied rigid link schematic diagram of the embodiment of the present invention;
Figure 15 is the rail fastening schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention;
Figure 16 is the test data acquisition device schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention.
Wherein 1 is girder, 2 is king-post, 3 is suspension cable, 4 is base, 5 is bridge pier, 6 is bearing, 7 is rail, 8 is centre-hole jack, 9 is punching force snesor, 10 is acceleration transducer, 11 is displacement transducer, 12 is anchoring piece, 13 is instruction carriage, 14 is triangular concrete block, 15 is lifting jack, 16 is reaction beam, 17 is the first distribution beam, 18 is the second distribution beam, 19 is the 3rd distribution beam, 20 is cushion block, 21 is ground anchor beam, 22 is geosyncline, 23 is bridge floor, 24 is Test Data Collecting equipment, 25 is bolt, 26 is nut, 27 is spring washer, 28 is bolt hole, 29 is ribbed stiffener, 30 is end plate, 31 is anchoring billet, 32 for loading bearing, 33 is rigid connector, 34 is damper, 35 is elastic cushion block, 36 is spring, 37 is gauge pad, 38 is peg, 39 is bearing support, 40 is parrel, 41 is screw rod, 42 is iron chair.
Embodiment
Further illustrating below to patented technology content of the present invention, but the restriction not to patent flesh and blood of the present invention.
Fig. 1 is the perspective view of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Fig. 2 is the side structure schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Fig. 3 is the Facad structure schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Fig. 4 is the Railway Cable-stayed Bridge test model road test schematic diagram of the embodiment of the present invention; Fig. 5 is that the Railway Cable-stayed Bridge test model of the embodiment of the present invention removes road test schematic diagram after rope; Fig. 6 is the static test schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Fig. 7 is the structural representation of the rigid connector of the embodiment of the present invention; Fig. 8 is the schematic diagram of the girder junction of the embodiment of the present invention; Fig. 9 is the structural representation of the anchored end of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Figure 10 is the front schematic view of the static load charger of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Figure 11 is the side schematic view of the static load charger of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Figure 12 is the hinged schematic diagram in suspension cable end of the embodiment of the present invention; Figure 13 is that the suspension cable end of the embodiment of the present invention is rigidly connected schematic diagram; Figure 14 is the suspension cable end varied rigid link schematic diagram of the embodiment of the present invention; Figure 15 is the rail fastening schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention; Figure 16 is the Test Data Collecting equipment schematic diagram of the Railway Cable-stayed Bridge test model of the embodiment of the present invention.
Railway Cable-stayed Bridge test model, comprises Railway Cable-stayed Bridge body, pontic rigid connector, is layed in the rail 7 for instruction carriage operation on Railway Cable-stayed Bridge body.Railway Cable-stayed Bridge body adopts sectional making, is formed by pontic rigid connector assembling combination; The experiment loading unit for simulating cable-stayed bridge static(al) and dynamic load and the data acquisition equipment 24 for acquisition test data Railway Cable-stayed Bridge body be equipped with.The test model of Railway Cable-stayed Bridge of the present invention, is loaded and power loading at cable-stayed bridge patrix Quintic system by experiment loading unit, and is gathered in time the bridge testing data under static(al) and dynamic test load action by data collector; The present invention can simulate the structural response of cable-stayed bridge under different load case, for bridge structure design provides test reference data, thus guarantees that cable-stayed bridge is runed for a long time, effectively.
It is also, experiment loading unit comprises the reaction beam 16 be arranged on the reserving hole of Railway Cable-stayed Bridge surface, is anchored at the ground anchor beam 21 on ground, for apply static load lifting jack 15 and for the distribution beam of distributing loading force and the screw rod 41 for connecting reaction beam 16 and ground anchor beam 21; The stiff end of lifting jack 15 is fixed on reaction beam 16, and the output terminal of lifting jack 15 connects distribution beam, and distribution beam is used for the bridge floor 23 load that lifting jack applies being assigned to Railway Cable-stayed Bridge.
It is also, distribution beam adopts three grades of distribution beam, and three grades of distribution beam comprise the first distribution beam 17, second distribution beam 18 and the 3rd distribution beam 19.The output terminal of lifting jack 15 is connected in the first distribution beam 17, and the first distribution beam 17 two ends connect respectively by the second distribution beam 18 and loaded in the 3rd distribution beam 19 by load, and the 3rd distribution beam 19 is arranged on the bridge floor of Railway Cable-stayed Bridge; First distribution beam 17 and the second distribution beam 18 are arranged vertically mutually, and the second distribution beam 18 and the 3rd distribution beam 19 are arranged vertically mutually.
It is also, Railway Cable-stayed Bridge comprises to be erect the king-post 2 arranged, horizontally disposed girder 1, connect suspension cable 3 between king-post 2 and girder 1, from the bridge pier 5 of bottom support girder 1 and be arranged on the bearing 6 bridge pier and the base 4 bottom fixing king-post 2; Rail 7 is laid on girder 1 surface.
It is also, centre-hole jack 8 and one piece for adjusting suspension cable 3 stretching force triangular concrete block 14 with holes is provided with in suspension cable 3 anchored end being positioned at girder 1 place, the inclined-plane of concrete block is fitted with anchoring billet 31, suspension cable 3 is through triangular concrete block 14 and anchoring billet 31; The first end of suspension cable 3 is anchored on bridge tower, and the second end of suspension cable is anchored on bridge.
It is also, data collector comprise be located at suspension cable 3 second end in process of the test in real time monitoring suspension cable 3 tension variations punching force snesor 9, be located on girder 1 and/or king-post 2 for test in process of the test girder 1 and/or king-post 2 shift value displacement transducer 11, be located on girder 1 and/or king-post 2 for testing the acceleration transducer 10 of the vibration acceleration of girder 1 and/or king-post 2 in process of the test.
It is also, girder 1 comprises at least two sections, connects into entirety between each sections by rigid connector 33; Rigid connector 33 comprises end plate 30, peg 38 and ribbed stiffener 29, and end plate 30 first side is burn-on for the peg 38 with the anchor connection of girder 1 sections; End plate 30 second side is left for adjacent two sections are carried out bolted bolt hole 28; End plate 30 is provided with at least two pieces, is welded in groups between end plate 30 with end plate 30 by ribbed stiffener.
It is also, at least one end of suspension cable 3 adopt be articulated and connected, be rigidly connected, one in varied rigid link, and suspension cable can be dismantled and change.
Be provided with damper 34 between suspension cable and Railway Cable-stayed Bridge body, damper 34 is connected with suspension cable 3 by parrel 40, and is supported by the bearing support 39 be cemented in Railway Cable-stayed Bridge.
It is also, rail 7 is arranged with elastic cushion block 35, and rail 7 is fixed on Railway Cable-stayed Bridge body by fastener.
As shown in Fig. 1, Fig. 2, Fig. 3, Cable-stayed Bridge Model comprises king-post 2, girder 1 and base 4, and each part all separately makes.Its middle girder 1 is spliced by the sections of different size, and each sections junction of girder 1 all arranges rigid connector 33, then by rigid connector 33, girder 1 is connected into entirety.Girder 1 and king-post 2, king-post 2 and base 4 all adopt the mode of building to connect into entirety, and base 4 is reserved with bolt hole, and can use bolt 25 anchoring on the ground after having built, model two ends are provided with a bridge pier 5.Suspension cable 3 one end is anchored on girder 1, and one end is anchored on king-post 2, all reserved drag-line hole when girder 1 and king-post 2 make.Cable-stayed Bridge Model is provided with rail 7, instruction carriage 13 can run on bridge along rail 7.King-post 2 and girder 1 displacement transducer 11 and acceleration transducer 10 have all been installed, can test the shift value of cable-stayed bridge in experimentation and accekeration by displacement transducer 11 and acceleration transducer 10, the data of test are gathered by data acquisition equipment 24.
Fig. 4, Fig. 5, Fig. 6 be respectively this cable-stayed bridge test model do road test, remove road test, static test three kinds of application examples after rope.
As shown in Figure 7, rigid connector 33 comprises end plate 30, peg 38 and ribbed stiffener 29.Weld ribbed stiffener 29 between end plate, make two end plates be linked to be entirety.End plate 30 all adopts the steel plate of suitable thickness, and peg 38 stamped by inner side steel plate, and peg 38 length wants long enough, so that steel plate is connected with girder 1.Outside plate leaves bolt hole 28, connects with bolt 25 to facilitate between both sides rigid connector 33.
As shown in Figure 8, before girder 1 is built, peg 38 and girder 1 are indulged muscle and welds together, and then build, make rigid connector 33 be fixed on girder 1 sections end.When girder 1 two segment is assembled, side rigid connector 33 arranges bolt hole 28 one_to_one corresponding of bolt hole 28 and opposite side rigid connector 33, and then fixes with bolt 26.
As shown in Figure 9, triangular concrete block 14 has reserved rope hole together with being cast in girder 1 before building, at triangular concrete block 14 side pad lastblock steel plate with holes as anchoring billet 31.Suspension cable 3 can pass triangular concrete block 14 and anchoring billet 31, and bottom can be fixed by anchoring piece 12, and lower end penetrates loading bearing 32 with holes successively, punching force snesor 9 and centre-hole jack 8 also fixed anchors 12.
Figure 10, Figure 11 are this Cable-stayed Bridge Model static load charger front schematic view and side schematic view respectively.Cable-stayed Bridges reserving hole, screw rod 41 is through hole, and one end connects reaction beam 16, and the other end connects ground anchor beam 21, and ground anchor beam 21 is connected with geosyncline 22 by screw rod 41.Adopt lifting jack 15 pairs of bridge floors 23 to load, load is assigned to eight load(ing) points by three grades of distribution beam (the first distribution beam 17, second distribution beam 18, the 3rd distribution beam 19) and cushion block 20 by each lifting jack 15.
Figure 12, Figure 13, Figure 14 be respectively suspension cable end hinged, be rigidly connected, varied rigid link schematic diagram.The each end of suspension cable 3 all can adopt hinged, be rigidly connected or varied rigid link.Every skew cables 3 all installs parrel 40, then connection damper 34, damper 34 is supported by bearing support 39.
As shown in figure 15, rail arranges elastic cushion block 35 7 times, is then fixed on bridge by rail 7 with fastener.Fastener comprises spring 36, gauge pad 37, bolt 25, nut 26, spring washer 27 and iron chair 42.By bolt 25, nut 26 and spring washer 27, gauge pad 37 is fixed on the side of rail 7.Be cemented in spring 36 on iron chair 42 and be fixed on nut 26 times, laterally support for bolt 25 provides.
Figure 16 is this Cable-stayed Bridge Model Test Data Collecting equipment schematic diagram, can gather the signal transmitted by punching force snesor 9, displacement transducer 11 and acceleration transducer 10.
During enforcement, a kind of cable-stayed bridge test model provided comprises interconnective rigid connector 33, experiment loading unit between king-post 2, girder 1, the base 4 being anchored at ground, suspension cable 3, rail 7, sections, data collector.Its middle girder 1 is formed by the section assembling of different length specification, adopts rigid connector 33 to connect into entirety between each sections of girder 1.All adopt the mode of building to connect into entirety between girder 1 and king-post 2 and between king-post 2 and base 4, base 4 is reserved with bolt hole, and base 4 adopts bolt 25 anchoring on the ground.Bridge model is provided with rail 7, instruction carriage 13 can run on bridge along rail 7.
The anchor end that every skew cables 3 is positioned at girder 1 place is provided with a triangular concrete block 14 with holes, the inclined-plane of triangular concrete block 14 arranges steel plate with holes as anchoring billet 31, suspension cable 3 passes triangular concrete block 14 and anchoring billet 31, with anchoring piece 12 anchoring.
Every skew cables 3 one end is anchored on king-post 2, and one end is anchored on the girder 1 of bridge; The anchored end that suspension cable 3 is positioned at girder place is provided with punching force snesor 9, in stretching process and in process of the test, can monitor the tension variations of suspension cable 3 in real time.
Every skew cables 3 end is provided with centre-hole jack 8, without the need to dismounting, and convenient adjustment suspension cable 3 stretching force.
Suspension cable 3 can carry out changing rope as required at any time, and can change different-stiffness into, the suspension cable 3 of different materials type and different cross section, also can remove some suspension cable 3 research experiment.
The bridge floor 23 dead load lifting jack 15 of test model applies, and is evenly distributed on bridge floor 23 by multistage distribution beam by load;
Test model can adopt moving vehicle model (instruction carriage 13) to load, simulating vehicle-bridge coupled system dynamic interaction test, the rail 7 that moving vehicle model (instruction carriage 13) can be laid on bridge runs with friction speed, simulation moving vehicle (instruction carriage 13) dynamic impact effects to bridge.
Bridge testing model is equipped with rail 7, the flexible cushion block 35 of rail 7 underlay, is fixed on rail 7 on bridge by fastener.
Elastic cushion block 35 under rail 7 can be replaced with the cushion block of different-stiffness and damping parameter, simulates the affecting laws that different cushion block parameter responds bridge vibration.
Carry out run due to vehicle (instruction carriage 13) the Vehicle-bridge System coupled vibrations experimental study caused time, can study by installing damper 34 on suspension cable 3 damping effect that different damping device 34 parameter vibrates suspension cable 3.
Carry out run due to vehicle (instruction carriage 13) the Vehicle-bridge System coupled vibrations experimental study caused time, can by changing the anchoring condition at suspension cable 3 two ends, research rigidity anchored end, articulated anchor fixed end and semi-rigid anchored end are to the affecting laws of suspension cable 3 and bridge vibration.
Carry out run due to vehicle (instruction carriage 13) the Vehicle-bridge System coupled vibrations experimental study caused time, can by removing cable-stayed bridge a pair suspension cable 3, research suspension cable 3 lost efficacy to the affecting laws of bridge vibration.
All installation position displacement sensor 11, acceleration transducer 10 on the girder 1 of cable-stayed bridge and king-post 2, wherein displacement transducer 11 can test the shift value of Cable-stayed Bridge Model at process of the test central sill body and king-post 2, and acceleration transducer 10 can test the vibration acceleration value of Cable-stayed Bridge Model beam body and king-post 2.
Moving vehicle model (instruction carriage 13) is portable CNC Model car, can stablize traveling on Cable-stayed Bridge Model, and can provide the excitation of specifying load to Cable-stayed Bridge Model.
The mode of test signal by Wireless Data Transmission of sensor or the mode by wired data transfer carry out data acquisition.
Advantageous Effects of the present invention is:
1, Cable-stayed Bridge Model of the present invention is simple for production
This Cable-stayed Bridge Model girder 1 is formed by the section assembling of different length specification, adopts rigid connector 33 to connect into entirety between each sections of girder 1; Girder 1 and king-tower, all adopt the mode of building to link together between king-post 2 and base 4, base 4 adopts bolt 25 anchoring on the ground.This method for making is convenient, assembled and disassemble easily.When test model needs displacement, this Cable-stayed Bridge Model can be taken apart and move, and avoids the inconvenience moving integrally and bring.Be convenient to the suspension cable 3 changing different cross section and material property simultaneously, be also convenient to the stretching force changing suspension cable 3.
2, Cable-stayed Bridge Model of the present invention loads rationally, perfect in shape and function
Model adopts lifting jack 15 to load, and is evenly distributed on bridge floor 23 by load by multistage distribution beam, and the load be carried in above girder 1 is even, and slow test can be made to carry out easily and accurately; The pulling force of drag-line can be controlled by centre-hole jack 8, without the need to dismounting, and convenient adjustment suspension cable 3 stretching force; Numerical control movable wheel type auto model can percussive action to bridge in accurate simulation vehicle operation.
3, Cable-stayed Bridge Model data acquisition of the present invention is efficient, timely
Model girder 1 and king-post 2 all install acceleration transducer 10, pressure transducer, every skew cables 3 all installs punching force snesor 9, the vibratory response of timely monitor model each several part.And the test signal of sensor is gathered by the mode of Wireless Data Transmission or the mode of wired data transfer by data acquisition equipment; Data acquisition more in time, efficiently.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure transformation utilizing description of the present invention to do, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a test model for Railway Cable-stayed Bridge, comprises Railway Cable-stayed Bridge body, pontic rigid connector, is layed in the rail for instruction carriage operation on Railway Cable-stayed Bridge body.It is characterized in that, Railway Cable-stayed Bridge body adopts sectional making, is formed by pontic rigid connector assembling combination; The experiment loading unit for simulating cable-stayed bridge static(al) and dynamic load and the data collector for acquisition test data Railway Cable-stayed Bridge body be equipped with.
2. Railway Cable-stayed Bridge test model according to claim 1, it is characterized in that, slow test charger comprises reaction beam on the preformed hole being arranged on Railway Cable-stayed Bridge surface, is anchored at the ground anchor beam on ground, for apply static load lifting jack and for the distribution beam of distributing loading force and the screw rod for connecting reaction beam and ground anchor beam; The stiff end of lifting jack is fixed on reaction beam, and the output terminal of lifting jack connects distribution beam, and distribution beam is assigned to the bridge floor of Railway Cable-stayed Bridge for the load applied by lifting jack.
3. Railway Cable-stayed Bridge test model according to claim 2, is characterized in that, distribution beam adopts three grades of distribution beam, and three grades of distribution beam comprise the first distribution beam, the second distribution beam and the 3rd distribution beam.The output terminal of lifting jack is connected in the first distribution beam, and the first distribution beam two ends connect respectively by the second distribution beam and loaded in the 3rd distribution beam by load, and the 3rd distribution beam is arranged on the bridge floor of Railway Cable-stayed Bridge; First distribution beam and the second distribution beam are arranged vertically mutually, and the second distribution beam and the 3rd distribution beam are arranged vertically mutually.
4. Railway Cable-stayed Bridge test model according to claim 1, it is characterized in that, Railway Cable-stayed Bridge comprises to be erect the king-post arranged, horizontally disposed girder, connects suspension cable between king-post and girder, from the bridge pier of bottom support girder and the base of the bearing be arranged on bridge pier and fixed tower column bottom; Steel rail laying is on girder surface.
5. Railway Cable-stayed Bridge test model according to claim 4, it is characterized in that, centre-hole jack for adjusting inclined guy cable stretching power and one piece of triangular concrete block with holes is provided with in the suspension cable anchored end being positioned at girder place, the inclined-plane of concrete block is fitted with anchoring billet, suspension cable is through triangular concrete block and anchoring billet; The first end of suspension cable is anchored on bridge tower, and the second end of suspension cable is anchored on girder.
6. Railway Cable-stayed Bridge test model according to claim 5, it is characterized in that, data collector comprise be located at suspension cable the second end in process of the test in real time monitoring suspension cable tension variations punching force snesor, be located on girder and/or king-post for test in process of the test girder and/or king-post shift value displacement transducer, be located on girder and/or king-post for testing the acceleration transducer of the vibration acceleration of girder and/or king-post in process of the test.
7. according to the Railway Cable-stayed Bridge test model described in claim 1, it is characterized in that, girder comprises at least two sections, connects into entirety between each sections by rigid connector; Rigid connector comprises end plate, peg and ribbed stiffener, and end plate first side is burn-on for the peg with the anchor connection of girder sections; End plate second side is left for adjacent two sections are carried out bolted bolt hole; End plate is provided with at least two pieces, is welded in groups between end plate with end plate by ribbed stiffener.
8. Railway Cable-stayed Bridge test model according to claim 1, is characterized in that, at least one end of suspension cable adopt be articulated and connected, be rigidly connected, one in varied rigid link, and suspension cable can be dismantled and change.
9. Railway Cable-stayed Bridge test model according to any one of claim 1 to 6, it is characterized in that, be provided with damper between suspension cable and Railway Cable-stayed Bridge body, damper is connected with suspension cable by parrel, and is supported by the bearing support be cemented in Railway Cable-stayed Bridge.
10. a kind of Railway Cable-stayed Bridge test model according to any one of claim 1 to 6, it is characterized in that, rail is arranged with elastic cushion block, and rail is fixed on Railway Cable-stayed Bridge body by fastener.
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| 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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| CN109839306A (en) * | 2019-01-26 | 2019-06-04 | 长沙理工大学 | Across the cable stayed-cable bridge experiment loading unit of one kind and its assemble method |
| CN109839306B (en) * | 2019-01-26 | 2021-06-15 | 长沙理工大学 | Loading device for testing of span-cable stayed bridge and assembling method thereof |
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| CN113218687A (en) * | 2021-04-29 | 2021-08-06 | 西南交通大学 | Cable-stayed bridge cable-beam anchoring structure reduced scale test model loading device and test method thereof |
| 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 |
| CN114858382B (en) * | 2022-04-26 | 2023-02-03 | 西南交通大学 | Cable-stayed bridge modal transition test testing device and modal transition analysis method |
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