CN104849021A - Wind and wave-resistant wind tunnel testing wave simulation device for bridge and simulation method thereof - Google Patents
Wind and wave-resistant wind tunnel testing wave simulation device for bridge and simulation method thereof Download PDFInfo
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- CN104849021A CN104849021A CN201510282720.6A CN201510282720A CN104849021A CN 104849021 A CN104849021 A CN 104849021A CN 201510282720 A CN201510282720 A CN 201510282720A CN 104849021 A CN104849021 A CN 104849021A
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Abstract
The invention relates to a bridge testing device and a simulation method of the bridge testing device and in particular relates to a wind and wave-resistant wind tunnel testing wave simulation device for bridge. The wind and wave-resistant wind tunnel testing wave simulation device for bridge comprises an engine, a sleeve, multiple vibration units and a rubber coverage layer, wherein the output end of the engine is connected with a gear transmission system, multiple vibration units are connected with the gear transmission system by the sleeve, the vibration unit comprises a crankshaft and two connecting rods, the crankshaft comprises a main journal and two connecting rod journals, the lower ends of the two connecting rods are articulated on two connecting rod journals respectively, the upper ends of two connecting rods are connected with the rubber coverage layer by springs, and the main journal of the crankshaft is supported by a support. According to the wind and wave-resistant wind tunnel testing wave simulation device for bridge, the rubber coverage layer is controlled to be moved and lifted to simulate wave movement, and the stress condition of the buildings such as bridge under the wind action can be measured under the influence of the waves.
Description
Technical field
Patent of the present invention relates to a kind of bridge testing device and analogy method thereof, is specially Wind-resistance of Bridges wave wind tunnel test simulated waves device and analogy method thereof.
Background technology
Wind is diversified to the harm that bridge causes, and bridge floor wind-induced vibration can cause people to lose the sense of security, serious even can suspend traffic.Along with the accumulation of time, bridge structure may shift to an earlier date fatigure failure, is the most seriously the tragedy causing bridge to ruin people to die.Present wind engineering of bridge mainly studies different types of rridges under different wind field condition, bridge structure static(al) effect and dynamic response.But for cross a river Longspan Bridge over strait, wind is not merely wind to this dynamic response under wind effect of the acting force of structure and structure on the impact of bridge.Because its flexibility is comparatively large, during design, need to consider the influence that stormy waves produces wind under bridge.Because in some cases, this influence can affect and change bridge Wind Field characteristic, and especially natural wind field is all typical stochastic process over time and space, there will be some emergency case at any time.Along with improving constantly of modern structure safety coefficient, the continuous enhancing of people's awareness of safety, when stormy waves even occurs hurricane billow comparatively greatly, this problem will seem particularly important.Determine that bridge wind load effect and wind resistance are the Main Means of Longspan Bridge anti-wind research by wind tunnel model test.But in test up to now, all do not consider when compared with high sea, wave is on the impact of wind field.When high sea produces, can become the barrier of wind field under bridge to a certain extent, bridge Wind Field characteristic is not at this time compared with when having a stormy waves, and wind is different to the effect that bridge produces, particularly large span, Flexible bridge, this effect more can not be ignored.
Summary of the invention
For above-mentioned technical matters, the invention provides a kind of test unit and analogy method thereof, the impact that research wave motion produces bridge wind effect.
Concrete technical scheme is:
Wind-resistance of Bridges wave wind tunnel test simulated waves device, comprises engine, sleeve, multiple vibration monomer and rubber covering layer; Described engine output end is connected with gear train assembly, described multiple vibration monomers are connected with gear train assembly by sleeve, described vibration monomer comprises bent axle, two connecting rods, described bent axle comprises king journal and two rod journals, and two connecting rod lower ends are hinged on two rod journals respectively; The upper end of two connecting rods is connected with rubber covering layer by spring; The king journal of bent axle is supported by support.
Vertical distance between two rod journals that the wave height of water body wave is bent axle; The half wavelength of water body wave is king journal length between two rod journals; The cycle of water body wave and velocity of propagation are regulated by the ratio of gear of gear train assembly.Moved up and down by bent axle drivening rod, thus drive rubber covering layer to produce fluctuation formation bridge Imitating wave, carry out wind tunnel test.
Wind-resistance of Bridges wave wind tunnel test simulated waves device provided by the invention and analogy method thereof, moving horizontally and being elevated simulated waves motion by controlling rubber covering layer, recording under the influence of the waves, the dynamic and static properties of the buildingss such as bridge under wind effect.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the present invention and implementation method thereof are further illustrated.
Fig. 1 is the sectional view of a device of the present invention.
Embodiment
Accompanying drawings the specific embodiment of the present invention.As shown in Figure 1, Wind-resistance of Bridges wave wind tunnel test simulated waves device, comprises engine 1, sleeve 5, multiple vibration monomer and rubber covering layer 8; Described engine 1 output terminal is connected with gear train assembly 4, described multiple vibration monomers are connected with gear train assembly 4 by sleeve 5, described vibration monomer comprises bent axle 13, two connecting rods 7, described bent axle 13 comprises king journal and two rod journals, and two connecting rod 7 lower ends are hinged on two rod journals respectively; The upper end of two connecting rods 7 is connected with rubber covering layer 8 by spring 9; The king journal of bent axle 13 is supported by support 11.
Wind-resistance of Bridges wave wind tunnel test simulated waves device needs the experiment segment length 32m of wind-tunnel, wide 3m, high 2m, and blower fan driving power is 160KW.
According to the reality tested Bridge Design life-span time limit, get 100 years one, its location and meet maximum wind velocity, wind rose and the essential information such as wind speed for many years, need according to design, get the different air speed value being no more than maximum wind velocity, and obtain the related datas such as the velocity of wave of the corresponding water body wave of each air speed value, cycle and wave height by linear relationship and correlation experience.
Get maximum wind velocity value to test, then successively decrease wind speed, until a certain wind speed can not cause adverse effect to bridge.The corresponding wave height that the wind speed determined by above-mentioned steps is obtained determines the size of bent axle 13.The wave height of water body wave is as vertical distance between two rod journals being bent axle 13; The half wavelength of water body wave is king journal length between two rod journals; The cycle of water body wave and velocity of propagation are regulated by the ratio of gear of gear train assembly 4.
The length of connecting rod 7 needs to determine according to test, mainly relevant with the model of bridge, and object guarantees that the distance between wave and bridge is suitable for.Spring 9 length of connecting rod 7 upper end is determined according to the length of connecting rod 7, is 1/5 of connecting rod 7 length.
Bridge main beam Segment Model is adopted to test, on test chamber ground, multiple vibration monomer connects according to wave effect region by down wind successively, and beam wind arranges rubber covering layer to according to wave width, is arranged in juxtaposition multiple stage wave simulation wave device and synchronous operation under layer.Bent axle 13 rotates, and connecting rod 7 moves up and down, and drives rubber covering layer 8 above to form wave-like.After reliablely and stablely simulated waves to be achieved motion, carry out wind tunnel test, test one by one according to above-mentioned satisfactory air speed value, because wave height corresponding to each wind speed, wavelength, cycle and velocity of wave, so will corresponding data be obtained.Wind speed by wave effect is tested one by one, can obtain in wave effect situation, bridge is to the load response of different wind speed, by the impact of wave on wind characteristic and then the impact on bridge structure can be obtained on the com-parison and analysis of each group of data, then according to designing requirement, corresponding safety prevention measure is taked to bridge.
Claims (2)
1. Wind-resistance of Bridges wave wind tunnel test simulated waves device, is characterized in that: comprise engine (1), sleeve (5), multiple vibration monomer and rubber covering layer (8); Described engine (1) output terminal is connected with gear train assembly (4), described multiple vibration monomers are connected with gear train assembly (4) by sleeve (5), described vibration monomer comprises bent axle (13), two connecting rods (7), described bent axle (13) comprises king journal and two rod journals, and two connecting rod (7) lower ends are hinged on two rod journals respectively; The upper end of two connecting rods (7) is connected with rubber covering layer (8) by spring (9); The king journal of bent axle (13) is supported by support (11).
2. the analogy method of Wind-resistance of Bridges according to claim 1 wave wind tunnel test simulated waves device, is characterized in that: the wave height of the water body wave of simulation be bent axle two rod journals between vertical distance; The half wavelength of water body wave is king journal length between two rod journals; The cycle of water body wave and velocity of propagation are regulated by the ratio of gear of gear train assembly, are moved up and down by bent axle (13) drivening rod (7), thus drive rubber covering layer (8) to produce fluctuation formation bridge Imitating wave.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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 true CN104849021A (en) | 2015-08-19 |
| CN104849021B CN104849021B (en) | 2018-05-22 |
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Cited By (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 |
| CN109115451A (en) * | 2018-11-13 | 2019-01-01 | 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 |
Cited By (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 |
| CN109115451A (en) * | 2018-11-13 | 2019-01-01 | 重庆大学 | Can with pacing wind pressure, hydraulic pressure, Flow Field Distribution wind-water flow coupled vibrations experimental rig |
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| Publication number | Publication date |
|---|---|
| CN104849021B (en) | 2018-05-22 |
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