CN104849021B - Wind-resistance of Bridges wave wind tunnel test simulated waves device and its analogy method - Google Patents
Wind-resistance of Bridges wave wind tunnel test simulated waves device and its analogy method Download PDFInfo
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- CN104849021B CN104849021B CN201510282720.6A CN201510282720A CN104849021B CN 104849021 B CN104849021 B CN 104849021B CN 201510282720 A CN201510282720 A CN 201510282720A CN 104849021 B CN104849021 B CN 104849021B
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Abstract
Patent of the present invention is related to a kind of bridge testing device and its analogy method, is specially Wind-resistance of Bridges wave wind tunnel test simulated waves device, including engine, sleeve, multiple vibration monomers and rubber covering layer；The engine output end is connected with gear train assembly, multiple vibration monomers are connected by sleeve with gear train assembly, the vibration monomer includes bent axle, two connecting rods, the bent axle includes trunnion and two rod journals, and two connecting rod lower ends are respectively hinged on two rod journals；The upper end of two connecting rods is connected by spring with rubber covering layer；The trunnion of bent axle is supported by stent.Wind-resistance of Bridges wave wind tunnel test simulated waves device provided by the invention is moved come simulated waves by controlling rubber covering layer mobile and lifting, measured under the influence of the waves, stressing conditions of the buildings such as bridge under wind effect.
Description
Technical field
Patent of the present invention is related to a kind of bridge testing device and its analogy method, is specially Wind-resistance of Bridges wave wind tunnel test mould
Intend wave device and its analogy method.
Background technology
It is diversified that wind is endangered caused by bridge, and bridge floor wind-induced vibration can cause people to lose the sense of security, serious
It can even suspend traffic.With the accumulation of time, bridge structure may shift to an earlier date fatigue rupture, and most serious is that bridge is caused to ruin people to die
Tragedy.Present wind engineering of bridge mainly studies different types of rridges under the conditions of different wind fields, and bridge structure static(al) effect is with moving
Force-responsive.However, for cross a river Longspan Bridge over strait, influence of the wind to bridge is not active force of the wind to structure merely
With structure in itself wind effect under dynamic response.Since its flexibility is larger, when design, needs to consider that stormy waves generates wind under bridge
Influence.Because in some cases, which can influence and change bridge Wind Field characteristic, especially naturally
Wind field is all typical random process over time and space, is present with some emergency cases at any time.With modern structure safety
The continuous improvement of coefficient, the continuous enhancing of people's awareness of safety, larger or even when there is hurricane billow in stormy waves, this problem is just
It can be particularly important.Determine that bridge wind effect and wind resistance are Longspan Bridge wind resistances by wind tunnel model test
The main means of research.But in experiment so far, all do not account in the case of larger stormy waves, wave is to wind field
It influences.When high sea generates, the barrier of wind field under bridge can be become to a certain extent, bridge Wind Field at this time is special
Property when no stormy waves compared with, effect that wind generates bridge is different, particularly large span, Flexible bridge, this
Effect more can not be ignored.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of experimental rig and its analogy method, and research wave motion is to bridge
The influence that beam wind scorpion generates.
Specifically technical solution is：
Wind-resistance of Bridges wave wind tunnel test simulated waves device, including engine, sleeve, multiple vibration monomers and rubber covering
Layer；The engine output end is connected with gear train assembly, and multiple vibration monomers pass through sleeve and gear drive
System connects, and the vibration monomer includes bent axle, two connecting rods, and the bent axle includes trunnion and two rod journals,
Two connecting rod lower ends are respectively hinged on two rod journals；The upper end of two connecting rods is connected by spring with rubber covering layer；
The trunnion of bent axle is supported by stent.
The wave height of water body wave be bent axle two rod journals between vertical distance；The half wavelength of water body wave is
Trunnion length between two rod journals；The gearratio tune that the cycle of water body wave and spread speed pass through gear train assembly
Section.By bent axle connecting rod is driven to move up and down, form bridge Imitating wave so as to which rubber covering layer be driven to generate fluctuation, carry out wind-tunnel
Experiment.
Wind-resistance of Bridges wave wind tunnel test simulated waves device provided by the invention and its analogy method, by the way that rubber is controlled to cover
Cap rock, which is moved horizontally and lifted, carrys out simulated waves movement, measures under the influence of the waves, the buildings such as bridge are under wind effect
Dynamic and static properties.
Description of the drawings
The present invention and its implementation are further illustrated with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the sectional view of the device of the present invention.
Specific embodiment
The specific embodiment of the present invention is described with reference to the drawings.As shown in Figure 1, Wind-resistance of Bridges wave wind tunnel test simulated waves
Device, including engine 1, sleeve 5, multiple vibration monomers and rubber covering layer 8；1 output terminal of engine is passed with gear
Dynamic system 4 connects, and multiple vibration monomers are connected by sleeve 5 with gear train assembly 4, and the vibration monomer includes
13, two connecting rods 7 of bent axle, the bent axle 13 include trunnion and two rod journals, and two 7 lower ends of connecting rod are respectively hinged at
On two rod journals；The upper end of two connecting rods 7 is connected by spring 9 with rubber covering layer 8；The trunnion of bent axle 13 passes through branch
Frame 11 supports.
Wind-resistance of Bridges wave wind tunnel test simulated waves device needs the experiment segment length 32m of wind-tunnel, width 3m, high 2m, and wind turbine drives
Dynamic power is 160KW.
According to the actual tested Bridge Design service life time limit, take its location meet within 100 years one maximum wind velocity, wind rose with
And essential informations such as wind speed for many years, it is needed according to design, takes the different air speed values no more than maximum wind velocity, and pass through linear correlation
Relation and correlation experience obtain each air speed value and correspond to the related datas such as velocity of wave, cycle and the wave height of water body wave.
Maximum wind velocity value is taken to be tested, then successively decrease wind speed, until a certain wind speed will not adversely affect bridge.
Correspondence wave height that the wind speed determined by above-mentioned steps obtains determines the size of bent axle 13.The wave height of water body wave is used as
Vertical distance between two rod journals of bent axle 13；The half wavelength of water body wave main shaft neck length between two rod journals
Degree；The cycle of water body wave and spread speed are adjusted by the gearratio of gear train assembly 4.
The length of connecting rod 7 according to experiment it needs to be determined that, it is mainly related with the model of bridge, it is therefore an objective to ensure wave and bridge
The distance between beam is suitable.9 length of spring of 7 upper end of connecting rod determines that 1/5 for 7 length of connecting rod is according to the length of connecting rod 7
It can.
It is tested using bridge main beam Segment Model, on test chamber ground, down wind is according to wave effect
Multiple vibration monomers are sequentially connected by region, and beam wind sets rubber covering layer to according to wave width, and more are arranged in juxtaposition under layer
Wave simulation wave device is simultaneously run simultaneously.Bent axle 13 rotates, and connecting rod 7 moves up and down, and drives the ripple of the formation of rubber covering layer 8 above
Shape wave shape.After reliablely and stablely simulated waves to be achieved movement, carry out wind tunnel test, according to above-mentioned satisfactory air speed value by
One is tested, because each wind speed corresponds to different wave height, wavelength, cycle and velocity of wave, will obtain corresponding data.It will
It is tested one by one by the wind speed of wave effect, you can obtain in wave effect, bridge rings the load of different wind speed
Should, influence of the wave to wind characteristic relatively can obtain and then the influence to bridge structure by the analysis to each group of data, so
Corresponding safety prevention measure takes bridge according to design requirement afterwards.
Claims (1)
1. the method for Wind-resistance of Bridges wave wind tunnel test simulated waves, it is characterised in that：It is simulated using the wind tunnel test of Wind-resistance of Bridges wave
Wave device, the wave height of the water body wave of the simulation vertical distance between two rod journals of bent axle；Half of water body wave
Wavelength trunnion length between two rod journals；The biography that the cycle of water body wave and spread speed pass through gear train assembly
It is dynamic by bent axle (13) connecting rod (7) to be driven to move up and down than adjusting, it is formed so as to which rubber covering layer (8) be driven to generate fluctuation under bridge
Simulated waves；
The Wind-resistance of Bridges wave wind tunnel test simulated waves device, including engine (1), sleeve (5), it is multiple vibration monomer and
Rubber covering layer (8)；Engine (1) output terminal is connected with gear train assembly (4), and multiple vibration monomers lead to
It crosses sleeve (5) to be connected with gear train assembly (4), the vibration monomer includes bent axle (13), two connecting rods (7), described
Bent axle (13) includes trunnion and two rod journals, and two connecting rod (7) lower ends are respectively hinged on two rod journals；Two
The upper end of connecting rod (7) is connected by spring (9) with rubber covering layer (8)；The trunnion of bent axle (13) is supported by stent (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282720.6A CN104849021B (en) | 2015-05-28 | 2015-05-28 | Wind-resistance of Bridges wave wind tunnel test simulated waves device and its analogy method |
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| CN201510282720.6A CN104849021B (en) | 2015-05-28 | 2015-05-28 | Wind-resistance of Bridges wave wind tunnel test simulated waves device and its analogy method |
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| CN104849021A CN104849021A (en) | 2015-08-19 |
| CN104849021B true CN104849021B (en) | 2018-05-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344861A (en) * | 2018-05-06 | 2018-07-31 | 吉林大学 | Vehicle-mounted road surface flaw detection system verifying attachment based on crankshaft connecting rod system |
| CN109115451B (en) * | 2018-11-13 | 2019-08-20 | 重庆大学 | Can with pacing wind pressure, hydraulic pressure, Flow Field Distribution wind-water flow coupled vibrations experimental rig |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE836006C (en) * | 1950-04-04 | 1952-04-07 | Dr Rudolf Blunck | Drive device, in particular for watercraft and aircraft |
| US3620651A (en) * | 1969-02-07 | 1971-11-16 | Int Combustion Holdings Ltd | Fluid flow apparatus |
| US3964316A (en) * | 1974-12-23 | 1976-06-22 | Rohr Industries, Inc. | Wave motion simulator |
| CN1312701A (en) * | 1998-07-23 | 2001-09-12 | 约翰·H·萨林格 | Mechanism for generating wave motion |
| KR20020066124A (en) * | 2001-02-09 | 2002-08-14 | 현대중공업 주식회사 | Wave power generating apparatus using floatage and crankshaft |
| CN204612893U (en) * | 2015-05-28 | 2015-09-02 | 山东科技大学 | Wind-resistance of Bridges wave wind tunnel test simulated waves device |
-
2015
- 2015-05-28 CN CN201510282720.6A patent/CN104849021B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE836006C (en) * | 1950-04-04 | 1952-04-07 | Dr Rudolf Blunck | Drive device, in particular for watercraft and aircraft |
| US3620651A (en) * | 1969-02-07 | 1971-11-16 | Int Combustion Holdings Ltd | Fluid flow apparatus |
| US3964316A (en) * | 1974-12-23 | 1976-06-22 | Rohr Industries, Inc. | Wave motion simulator |
| CN1312701A (en) * | 1998-07-23 | 2001-09-12 | 约翰·H·萨林格 | Mechanism for generating wave motion |
| KR20020066124A (en) * | 2001-02-09 | 2002-08-14 | 현대중공업 주식회사 | Wave power generating apparatus using floatage and crankshaft |
| CN204612893U (en) * | 2015-05-28 | 2015-09-02 | 山东科技大学 | Wind-resistance of Bridges wave wind tunnel test simulated waves device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104849021A (en) | 2015-08-19 |
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