CN206772547U - Can large amplitude reverse bridge subsection flutter response wind tunnel test equipment - Google Patents
Can large amplitude reverse bridge subsection flutter response wind tunnel test equipment Download PDFInfo
- Publication number
- CN206772547U CN206772547U CN201720294133.3U CN201720294133U CN206772547U CN 206772547 U CN206772547 U CN 206772547U CN 201720294133 U CN201720294133 U CN 201720294133U CN 206772547 U CN206772547 U CN 206772547U
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- bridge
- diagnostics
- health test
- spring
- large amplitude
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Abstract
It is a kind of can large amplitude reverse bridge subsection flutter response wind tunnel test equipment, it is characterised in that：Described bridge health test and diagnostics are in the box-shaped of both ends open, and the ends of bridge health test and diagnostics is connected sleeve；Longeron passes the end of bridge health test and diagnostics inner chamber and is connected with the lower inside flat end of longitudinal brace；The lower outside of longitudinal brace is fixed on more spring supports by bearing；The composition of more spring supports is：Entablature is by covering on jacket casing montant；The bottom of entablature passes through two Vertical Spring suspension connection sheer poles；Two vertical connecting rods are fixed in the upper surface of sheer pole, and the middle and upper part of vertical connecting rod is by the way that laterally tiltedly spring is connected with the top of longitudinal brace；The end of sheer pole is connected by crossed strip with montant.The equipment can realize vertical motion, lateral movement and the large amplitude twist motion of bridge health test and diagnostics simultaneously；So as to provide more accurate, reliable test basis for the anti-flutter of bridge design, construction and maintenance.
Description
Technical field
The utility model is related to a kind of bridge health test and diagnostics wind tunnel test equipment, more particularly to it is a kind of can large amplitude reverse
Bridge subsection flutter responds wind tunnel test equipment.
Background technology
As modern bridge across, very thin, soft direction to developing greatly, construction technology causes bridge structure damping ratio to get over again
Come lower, its wind-induced vibration problem is more and more prominent.Wherein Bridge Flutter is a kind of destructive pure torsion or bending and reversed
The diverging self-excited vibration of coupling, the girder vibrated when serious constantly absorb energy by the feedback effect of air-flow and overcome structure itself
Damping, amplitude is caused to incrementally increase until structure is destroyed.Therefore, it is necessary to carry out the wind tunnel test of bridge subsection flutter response, with
The test data of the flutter response of bridge subsection is obtained, so as to provide test basis for the wind force proofing design of bridge, construction and maintenance.
The corners of bridge health test and diagnostics is hanged totally frequently with upper four, lower four eight springs in existing wind tunnel test
Hang and the mode of drawing is supported.The vertical and lateral movement amplitude of bridge health test and diagnostics is larger, but its torsional amplitude is small, with
Bridge Flutter is the state grave fault of pure torsion or bending and the diverging self-excited vibration of twisted coupling, can not actually obtain bridge
Flutter response after flutter, it is impossible to provide reliable test basis for the wind force proofing design of bridge, construction and maintenance.
Utility model content
The purpose of this utility model be to provide it is a kind of can large amplitude reverse bridge subsection flutter response wind tunnel test equipment,
The equipment at the trial, can realize vertical motion, lateral movement and the large amplitude twist motion of bridge health test and diagnostics simultaneously；
Pure torsion or bending and the diverging self-excitation of twisted coupling when the motion state of this bridge health test and diagnostics occurs with Bridge Flutter
The state of vibration is consistent, and can obtain the response of the flutter after Bridge Flutter, so as to be the anti-flutter of bridge design, construction and maintenance
More accurate, reliable test basis is provided.
To realize goal of the invention, used technical scheme is the utility model：It is a kind of can large amplitude reverse bridge section
Section flutter response wind tunnel test equipment, including be arranged in wind-tunnel 1 bridge health test and diagnostics 2, supporting bridge Segment Model 2 it is more
Spring support 3；It is characterized in that：
Described bridge health test and diagnostics are in the box-shaped of both ends open, and the open-ended place threaded connection of bridge health test and diagnostics is solid
Determine sleeve；Longeron passes through the inner chamber of fixes sleeve and bridge health test and diagnostics；Fixes sleeve is provided with the lock-screw of locking longeron；
The end that described longeron passes bridge health test and diagnostics is connected with the lower inside of longitudinal brace；Longitudinal brace
The flat end of lower outside be connected with bearing；The upper connection pad plate of bearing is threadedly connected on the sheer pole of more spring supports；
The composition of described more spring supports is：The left end and right-hand member of anterior entablature are respectively fitted over by crossbeam sleeve
On the montant of preceding left part and preceding right part；The left end and right-hand member of the entablature at rear portion are respectively fitted over rear left part with after by crossbeam sleeve
On the montant of right part；The bottom of entablature passes through two Vertical Spring suspension connection sheer poles；The upper surface of sheer pole fixes two
Root vertical connecting rod, the middle and upper part of vertical connecting rod is by the way that laterally tiltedly spring is connected with the top of longitudinal brace；The end of sheer pole passes through
Crossed strip is connected with montant.
Described sheer pole upper surface both sides and the middle and upper part of vertical connecting rod are both provided with multiple spring connecting holes.
Laterally oblique spring on two described vertical connecting rods is with corresponding sheer pole in a plane.
The end that longeron passes bridge health test and diagnostics is with the concrete structure that the lower inside of longitudinal brace is connected；Longitudinal direction
The lower inside of brace fixes the branch sleeve of a vertical equity, and the end of longeron is linked in branch sleeve, and connects
Sleeve is provided with lock-screw.
The course of work and operation principle of the present utility model are：
Before experiment, bridge health test and diagnostics are given to apply a vertical motion, it is lateral and bottom is set by bridge health test and diagnostics
Laser displacement sensor collection displacement data calculate its vertical motion frequency, adjusted by adjusting the rigidity of Vertical Spring
The vertical motion frequency of bridge health test and diagnostics.Equally, apply an oscillation crosswise to bridge health test and diagnostics, after calculating, pass through tune
The rigidity of whole crossed strip adjusts the transverse movement frequency of bridge health test and diagnostics.Apply twisting vibration to bridge health test and diagnostics,
After calculating, by adjusting laterally the arm of force of the tiltedly rigidity of spring and Vertical Spring and horizontal tiltedly spring, bridge section can be adjusted
The twist motion frequency of segment model.
Open blower fan, the longitudinal direction of wind-tunnel carrys out wind and blows to bridge health test and diagnostics on longeron, and bridge health test and diagnostics can be slowly
Vibration, at the same by bridge health test and diagnostics are lateral and bottom set by laser displacement sensor gather displacement data, once hair
After raw flutter, laterally tiltedly the collective effect of spring and bearing causes bridge health test and diagnostics that large amplitude occurs and reverses, and collects simultaneously
Flutter response data after bridge health test and diagnostics flutter
Compared with prior art, the beneficial effects of the utility model are：
Bearing on spring mounted sheer pole of the present utility model is connected with the lower outside of longitudinal brace, and longitudinal direction is tiltedly
The lower inside of pull bar is connected with bridge health test and diagnostics, releases the torsional freedom of model, then add the top of longitudinal brace
By the way that laterally tiltedly spring is connected with sheer pole so that bridge health test and diagnostics possess large amplitude torsion capacity.Laterally oblique spring, transverse direction
The bridge health test and diagnostics for the Three Degree Of Freedom spring suspension connection that the combination of spring and Vertical Spring totally three groups of springs is formed, make equipment
At the trial, vertical motion, lateral movement and the large amplitude twist motion of bridge health test and diagnostics can be realized simultaneously；This bridge
The shape of the diverging self-excited vibration of pure torsion or bending and twisted coupling when the motion state of Segment Model occurs with Bridge Flutter
State is consistent, and can obtain the response of the flutter after Bridge Flutter, more accurate so as to be provided for the anti-flutter of bridge design, construction and maintenance
Really, reliable test basis.
Further, sheer pole upper surface of the present utility model both sides and the middle and upper part of vertical connecting rod are both provided with multiple springs companies
Connect hole.
In such manner, it is possible to the arm of force for very easily adjusting spring has carried out the regulation of paired frequency.
Further, the oblique spring of transverse direction on two vertical connecting rods of the present utility model is with corresponding sheer pole in a plane
It is interior.
So so that tiltedly spring is in perpendicular to transverse direction all the time, and convenience that can be very big calculates.
Further, the lower inside of longitudinal brace of the present utility model fixes the branch sleeve of a vertical equity, indulges
The end of beam is linked in branch sleeve, and branch sleeve is provided with lock-screw.
In such manner, it is possible to easily reliable is bridge health test and diagnostics locking positioning, guarantee test it is accurate and reliable, also just
In dismounting.
The utility model is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the utility model embodiment.
Fig. 2 is the side structure schematic view of the utility model embodiment.
Fig. 3 is the positive structure diagram of the utility model embodiment.
Embodiment
Embodiment
Fig. 1-3 shows, a kind of embodiment of the present utility model is, it is a kind of can the bridge subsection that reverses of large amplitude quiver
Vibration response wind tunnel test equipment, including bridge health test and diagnostics 2, the more springs of supporting bridge Segment Model 2 being arranged in wind-tunnel 1
Support 3；It is characterized in that：
Described bridge health test and diagnostics 2 are in the box-shaped of both ends open, and the open-ended place of bridge health test and diagnostics 2 is threadedly coupled
Fixes sleeve 6；Longeron 5 passes through the inner chamber of fixes sleeve 6 and bridge health test and diagnostics 2；Fixes sleeve 6 is provided with locking longeron 5
Lock-screw 9；
The end that described longeron 5 passes bridge health test and diagnostics 2 is connected with the lower inside of longitudinal brace 8；Longitudinal direction is tiltedly
The flat end of the lower outside of pull bar 8 is connected with bearing 4；The upper connection pad plate 41 of bearing 4 is threadedly connected to the lower horizontal stroke of more spring supports 3
On bar 35；
The composition of described more spring supports 3 is：The left end and right-hand member of anterior entablature 34 are divided by crossbeam sleeve 37
Before not being enclosed on the montant 36 of left part and preceding right part；The left end and right-hand member of the entablature 34 at rear portion are covered respectively by crossbeam sleeve 37
On the montant 36 of rear left part and rear right part；The bottom of entablature 34 passes through two suspension connection sheer poles 35 of Vertical Spring 31；
Two vertical connecting rods 38 are fixed in the upper surface of sheer pole 35, and the middle and upper part of vertical connecting rod 38 passes through laterally oblique spring 33 and longitudinal brace
8 top connection；The end of sheer pole 35 is connected by crossed strip 32 with montant 36.
The upper surface both sides of sheer pole 35 of this example and the middle and upper part of vertical connecting rod 38 are both provided with multiple spring connecting holes.
Laterally oblique spring 33 on two vertical connecting rods 38 of this example is with corresponding sheer pole 35 in a plane.
The longeron 5 of this example passes the specific knot that the end of bridge health test and diagnostics 2 is connected with the lower inside of longitudinal brace 8
Structure is；The lower inside of longitudinal brace 8 fixes the branch sleeve 7 of a vertical equity, and the end of longeron 5 is linked in adapter sleeve
In cylinder 7, and branch sleeve 7 is provided with lock-screw 9.
Claims (4)
1. it is a kind of can the bridge subsection flutter response wind tunnel test equipment reversed of large amplitude, including the bridge being arranged in wind-tunnel (1)
More spring supports (3) of girder segment model (2), supporting bridge Segment Model (2)；It is characterized in that：
Described bridge health test and diagnostics (2) are in the box-shaped of both ends open, and the open-ended place of bridge health test and diagnostics (2) is threadedly coupled
Fixes sleeve (6)；Longeron (5) passes through the inner chamber of fixes sleeve (6) and bridge health test and diagnostics (2)；Fixes sleeve (6) is provided with lock
The lock-screw (9) of tight longeron (5)；
The end that described longeron (5) passes bridge health test and diagnostics (2) is connected with the lower inside of longitudinal brace (8)；Longitudinal direction
The flat end of the lower outside of brace (8) is connected with bearing (4)；The upper connection pad plate (41) of bearing (4) is threadedly connected to more springs
On the sheer pole (35) of support (3)；
The composition of described more spring supports (3) is：The left end and right-hand member of anterior entablature (34) pass through crossbeam sleeve (37)
Before being respectively fitted on the montant (36) of left part and preceding right part；The left end and right-hand member of the entablature (34) at rear portion pass through crossbeam sleeve
(37) it is respectively fitted on the montant (36) of rear left part and rear right part；The bottom of entablature (34) is outstanding by two Vertical Springs (31)
Hang connection sheer pole (35)；Two vertical connecting rods (38) are fixed in the upper surface of sheer pole (35), and the middle and upper part of vertical connecting rod (38) passes through
Laterally tiltedly spring (33) is connected with the top of longitudinal brace (8)；The end of sheer pole (35) is by crossed strip (32) with erecting
Bar (36) is connected.
2. it is as claimed in claim 1 it is a kind of can the bridge subsection flutter response wind tunnel test equipment reversed of large amplitude, its feature
It is：Described sheer pole (35) upper surface both sides and the middle and upper part of vertical connecting rod (38) are both provided with multiple spring connecting holes.
3. it is as claimed in claim 1 it is a kind of can the bridge subsection flutter response wind tunnel test equipment reversed of large amplitude, its feature
It is：Laterally oblique spring (33) on two described vertical connecting rods (38) is with corresponding sheer pole (35) in a plane.
4. it is as claimed in claim 1 it is a kind of can the bridge subsection flutter response wind tunnel test equipment reversed of large amplitude, its feature
It is：Described longeron (5) passes the end of bridge health test and diagnostics (2) and the lower inside of longitudinal brace (8) be connected it is specific
Structure is；The lower inside of longitudinal brace (8) fixes the branch sleeve (7) of a vertical equity, the end fit of longeron (5)
In branch sleeve (7), and branch sleeve (7) is provided with lock-screw (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720294133.3U CN206772547U (en) | 2017-03-24 | 2017-03-24 | Can large amplitude reverse bridge subsection flutter response wind tunnel test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720294133.3U CN206772547U (en) | 2017-03-24 | 2017-03-24 | Can large amplitude reverse bridge subsection flutter response wind tunnel test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772547U true CN206772547U (en) | 2017-12-19 |
Family
ID=60633183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720294133.3U Expired - Fee Related CN206772547U (en) | 2017-03-24 | 2017-03-24 | Can large amplitude reverse bridge subsection flutter response wind tunnel test equipment |
Country Status (1)
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|---|---|
| CN (1) | CN206772547U (en) |
Cited By (10)
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|---|---|---|---|---|
| CN108414186A (en) * | 2018-02-08 | 2018-08-17 | 大连理工大学 | A kind of bridge is vertical and twisted coupling large amplitude free vibration flow tunnel testing device |
| CN108444670A (en) * | 2018-03-05 | 2018-08-24 | 大连理工大学 | A kind of bridge is vertical and twisted coupling large amplitude free vibration flow tunnel testing device |
| CN109540460A (en) * | 2018-12-25 | 2019-03-29 | 西南交通大学 | A kind of double box beam whole bridge emulation girder core beam constructional forms of large span |
| CN110455489A (en) * | 2019-08-09 | 2019-11-15 | 东南大学 | A kind of flow tunnel testing device measuring bridge subsection model of vibration Pressures |
| WO2020258449A1 (en) * | 2019-06-28 | 2020-12-30 | 大连理工大学 | Testing device for large-amplitude longitudinal and coupled torsional free vibration of bridge in natural wind field |
| CN112161774A (en) * | 2020-11-03 | 2021-01-01 | 长安大学 | Wind tunnel experiment device for three-degree-of-freedom coupled vibration under large wind attack angle |
| CN112924132A (en) * | 2021-01-29 | 2021-06-08 | 同济大学 | Vertical torsion two-degree-of-freedom segment model wind tunnel test system |
| CN113465866A (en) * | 2021-07-09 | 2021-10-01 | 西南交通大学 | Test device with static and dynamic test functions of bridge section model |
| CN114112292A (en) * | 2021-11-22 | 2022-03-01 | 中国建筑第五工程局有限公司 | Large-span bridge high-order vortex vibration wind tunnel test model system and test method thereof |
| CN115791073A (en) * | 2022-10-14 | 2023-03-14 | 港珠澳大桥管理局 | Pneumatic self-excitation force testing device |
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2017
- 2017-03-24 CN CN201720294133.3U patent/CN206772547U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414186A (en) * | 2018-02-08 | 2018-08-17 | 大连理工大学 | A kind of bridge is vertical and twisted coupling large amplitude free vibration flow tunnel testing device |
| CN108414186B (en) * | 2018-02-08 | 2019-06-21 | 大连理工大学 | A kind of bridge is vertical and twisted coupling large amplitude free vibration flow tunnel testing device |
| CN108444670A (en) * | 2018-03-05 | 2018-08-24 | 大连理工大学 | A kind of bridge is vertical and twisted coupling large amplitude free vibration flow tunnel testing device |
| CN108444670B (en) * | 2018-03-05 | 2019-06-21 | 大连理工大学 | A kind of bridge is vertical and twisted coupling large amplitude free vibration flow tunnel testing device |
| CN109540460A (en) * | 2018-12-25 | 2019-03-29 | 西南交通大学 | A kind of double box beam whole bridge emulation girder core beam constructional forms of large span |
| CN109540460B (en) * | 2018-12-25 | 2023-09-29 | 西南交通大学 | Large-span double-box-girder full-bridge pneumatic elastic model girder core beam construction form |
| US11293832B2 (en) | 2019-06-28 | 2022-04-05 | Dalian University Of Technology | Large-amplitude vertical-torsional coupled free vibration testing device for bridges in natural winds |
| WO2020258449A1 (en) * | 2019-06-28 | 2020-12-30 | 大连理工大学 | Testing device for large-amplitude longitudinal and coupled torsional free vibration of bridge in natural wind field |
| CN110455489A (en) * | 2019-08-09 | 2019-11-15 | 东南大学 | A kind of flow tunnel testing device measuring bridge subsection model of vibration Pressures |
| CN112161774A (en) * | 2020-11-03 | 2021-01-01 | 长安大学 | Wind tunnel experiment device for three-degree-of-freedom coupled vibration under large wind attack angle |
| CN112924132A (en) * | 2021-01-29 | 2021-06-08 | 同济大学 | Vertical torsion two-degree-of-freedom segment model wind tunnel test system |
| CN113465866A (en) * | 2021-07-09 | 2021-10-01 | 西南交通大学 | Test device with static and dynamic test functions of bridge section model |
| CN113465866B (en) * | 2021-07-09 | 2022-03-08 | 西南交通大学 | Test device with static and dynamic test functions of bridge section model |
| CN114112292A (en) * | 2021-11-22 | 2022-03-01 | 中国建筑第五工程局有限公司 | Large-span bridge high-order vortex vibration wind tunnel test model system and test method thereof |
| CN114112292B (en) * | 2021-11-22 | 2023-08-08 | 中国建筑第五工程局有限公司 | Large-span bridge high-order vortex-induced vibration wind tunnel test model system and test method thereof |
| CN115791073A (en) * | 2022-10-14 | 2023-03-14 | 港珠澳大桥管理局 | Pneumatic self-excitation force testing device |
| CN115791073B (en) * | 2022-10-14 | 2023-11-28 | 港珠澳大桥管理局 | Pneumatic self-excitation force testing device |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20200324 |