CN203360950U - Floating vibration isolation structure of track system - Google Patents
Floating vibration isolation structure of track system Download PDFInfo
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- CN203360950U CN203360950U CN 201320449047 CN201320449047U CN203360950U CN 203360950 U CN203360950 U CN 203360950U CN 201320449047 CN201320449047 CN 201320449047 CN 201320449047 U CN201320449047 U CN 201320449047U CN 203360950 U CN203360950 U CN 203360950U
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Abstract
The utility model relates to a floating vibration isolation structure of a track system. The floating vibration isolation structure comprises a bottom-layer floating building vibration isolation system, an upper-layer steel spring floating slab track bed vibration isolation system and a damping limiter, wherein the bottom-layer floating building vibration isolation system is formed by a basic rigid quality block and a floating building rubber vibration isolation cushion, and the floating building rubber vibration isolation cushion is arranged between the inner wall of a tunnel shield segment and the bottom rigid quality block; the upper-layer steel spring floating slab track bed vibration isolation system is formed by rigid slab track beds and damping steel spring vibration isolators, and the damping steel spring vibration isolators are mounted on the basic rigid quality block; a track is mounted on the rigid slab track beds; the pre-load of the damping steel spring vibration isolators can be adjusted in advance. The track system has a double floating vibration isolation structure, so that vibrations caused by a subway are controlled while the dynamic subsidence quantity of a subway in full-load running satisfies the related specification of a subway line, and especially, for a special section sensitive to the vibrations, the requirement on vibration isolation can be effectively satisfied.
Description
Technical field
The utility model relates to a kind of isolation mounting, in particular for the rail system vibration insulation structure of floating.
Background technology
Because urban track traffic has quick, the advantages such as the passenger traffic volume is large, security reliability is high, smokeless pollution at a high speed, be adopted as by domestic and international many big and medium-sized cities the traffic pressure that the traffic trunk line brings to alleviate urbanization in recent years.Yet, be accompanied by the raising of China's train speed, the vibration of railway and noise problem are outstanding all the more, if do not taken effective measures, both can reduce passenger's comfort level, the application life of the various component of vehicle be can reduce again, Along Railway resident's work, quality of life and various device, the life-span of building also can be affected simultaneously.Therefore, the vibration that subway causes and noise have become the primary restraining factors of development subway transportation.And the control of Subway Vibration and noise is as the part of environmental protection industry, at aspect the metro environment construction and economy and environmental harmony sustainable development aspect, all there is important and unique meaning.
The vibration and noise reducing system of rail system takes the technical measures such as various damper rail connectors, high resiliency rail fastening, rail dampener and spring floating plate railway roadbed, and each also obtains certain effect.Up to the present, spring floating plate railway roadbed effect is better, and still, the special location to vibration sensing, still can not meet the demands.
Certain occasion to the exigent situation of vibratory equipment vibration isolation under, when a vibration isolation can not meet the vibration isolation requirement, need to adopt two-stage vibration isolation.Known conditions and the definite kinetic parameter of Vibration Absorbing System Design of the kinetic parameter design of a vibration insulation structure are the known conditions that two-stage vibration isolation designs.The vibration of two-stage vibration isolation structure is delivered in further decay on the basis that the vibration of a vibration insulation structure transmits, thereby makes to transmit than less and vibration isolating effect is better.The two-stage vibration isolation structure is used floating rubber vibration insulating pad and the damping steel spring shock absorber built of two kinds of different intrinsic frequencies, forms the vibration insulation structure of two kinds of different intrinsic frequencies.
The secondary that rail system the is set vibration insulation structure of floating, the regulation of the Dynamic Subsidence amount while meeting subway line for train operation in the Vibration Treatment that can cause at subway, particularly in the special location of vibration sensing, can more effectively meet the vibration isolation requirement.
Summary of the invention
In order to improve the effect of vibration and noise reduction of rail system, the utility model provides a kind of rail system vibration insulation structure of floating, this rail system damping steel spring vibration isolator and damping stop that vibration insulation structure system takes the two-stage vibration isolation structure, has adjustable pre-load function of floating, can not only meet the vibration insulation and noise reduction requirement of rail system, the regulation of the Dynamic Subsidence amount while simultaneously meeting subway line for train operation.
The utility model solves the technical scheme that its technical problem adopts; A kind of rail system vibration insulation structure of floating, build vibrating isolation system, upper strata steel spring floating slab road bed vibrating isolation system and damping stop and form by bottom is floating.Bottom is floating to be built vibrating isolation system by the basic rigidity mass and floatingly builds rubber vibration insulating pad and form, and floatingly builds rubber vibration insulating pad and is arranged between tunneling shield section of jurisdiction inwall and bottom rigid block; Upper strata steel spring floating slab road bed vibrating isolation system consists of rigid slab railway roadbed and damping steel spring vibration isolator, the damping steel spring vibration isolator be arranged on the basic rigidity mass and between, track is arranged on the rigid slab railway roadbed, and the damping steel spring vibration isolator has the function of adjustable pre-load.
Between tunneling shield section of jurisdiction inwall and basic rigidity mass two sides, the constraint steel work is set, the floating floating rubber vibration isolation of building of building vibrating isolation system of bottom completely is layered on tunneling shield section of jurisdiction inwall and constraint steel work facade, after laying the waterproof barrier film, reinforcement cage structure casting concrete formation base rigid block is set in the above, and floating total load scope of building rubber vibration insulating pad is greater than basic rigidity mass, rigid slab railway roadbed and train maximum load.The setting of constraint steel work, can prevent the floating lateral displacement of building the basic rigidity mass of vibrating isolation system of bottom, particularly particularly important in circular curve location, tunnel.The centre position on basic rigidity mass top arranges gutter, and basic rigidity mass and basic rigidity mass arrange rubber weather strip with the gap on constraint steel work top.At the constraint steel work of basic rigidity mass two sides settings, can prevent the lateral displacement of basic rigidity mass.The rigid slab railway roadbed can be taked the technique of overall structure field fabrication reinforcement cage structure on-site concrete casting, also can take prefabricated specification framework, and field erected technique simultaneously, is taked the floating plate railway roadbed that load-carrying construction is installed and connected between two precast constructions.The damping stop, by steel work and rubber combined making, is arranged between rigid slab railway roadbed two limits and tunnel structure, along rigid slab railway roadbed central axis, is symmetrical arranged, and the damping stop is arranged on the inwall of tunneling shield section of jurisdiction.It is larger that the damping stop has critical damping, can absorbing vibrational energy, the characteristics that damped vibration is transmitted, the damping stop can provide the restriction of rigid slab railway roadbed level to displacement, between damping stop and rigid slab railway roadbed, normality leaves certain gap, can prevent that low frequency vibration is by the transmission of damping stop, produce the low frequency vibration short circuit.When the rigid slab railway roadbed is taked overall structure, the damping stop arranges at a certain distance, the group number of damping stop can be according to the actual conditions adjustment, when the rigid slab railway roadbed is taked precast construction, the damping stop is arranged between two precast constructions, the total load scope of damping stop is greater than the dynamic load sum of dynamic load and the rigid slab railway roadbed of train maximum, and the damping stop has horizontal cross and lengthwise position is adjusted function, can adjust the spacing with the rigid slab railway roadbed.
The built-in damping steel spring vibration isolator of rigid slab railway roadbed is positioned at the track outside, at a certain distance, along rigid slab railway roadbed central axis, is symmetrical arranged, and to enlarge loaded area, improves the harmony of bearing load; Average dynamic load sum when the dead load that the best load scope of damping steel spring vibration isolator is the rigid slab railway roadbed, ancillary service dead load and train operation.The damping steel spring vibration isolator can prevent the low frequency vibration short circuit, floating build rubber vibration insulating pad and can prevent the dither short circuit.Damping steel spring vibration isolator, floating intrinsic frequency difference of building rubber vibration insulating pad, because a certain transient-upset frequency in train operation medium velocity change procedure is unique, it can not produce resonance with two kinds of different natural frequencies simultaneously, thereby eliminates covibration, effectively improves vibration isolation efficiency.Described damping steel spring vibration isolator has the function of adjustable pre-load, total load when pre-load scope should be lower than train no-load running is more than 5%, elastic deformation amount when reducing train operation during damping steel spring vibration isolator pressurized, the rail system regulation of Dynamic Subsidence amount of vibration insulation structure of floating while meeting train full-load run.The regulation of the Dynamic Subsidence amount due to subway line during for train operation is very strict, and the secondary that the utility model the arranges rail system vibration insulation structure of floating, if do not take appropriate measures, can cause the Dynamic Subsidence amount excessive.The floating modulus of elasticity of building rubber vibration insulating pad that bottom is floating builds vibrating isolation system is very little, it is a kind of nonlinear elastomeric material, to float and build the full place mat of rubber vibration insulating pad at tunneling shield section of jurisdiction inwall and constraint steel work facade, after the constant dead load that bears rigid slab railway roadbed, bottom rigid block, compressive deformation amount during train operation is very little on the impact of Dynamic Subsidence amount.The modulus of elasticity of the damping steel spring vibration isolator of upper strata steel spring floating slab road bed vibrating isolation system is larger, is linear elastomeric material, larger on the impact of Dynamic Subsidence amount.In order to meet the regulation requirement, the damping steel spring vibration isolator is arranged to the function of adjustable pre-load, damping steel spring vibration isolator load is in its pre-load scope, and the damping steel spring vibration isolator does not produce compressive deformation, the Dynamic Subsidence amount in the time of can effectively reducing its suffered maximum load.If pre-load setting is larger, the compressive deformation amount of damping steel spring vibration isolator during train operation is just little, and the Dynamic Subsidence amount is also little.But, if total load when load is with train no-load running in advance is consistent, during train no-load running, the adjustable pre-load member of damping steel spring vibration isolator still keeps Pre strained state, can cause vibration to transmit, cause vibration isolation to be lost efficacy.Therefore total load when pre-load scope should be lower than train no-load running, more than 5%, had both met the Dynamic Subsidence amount while reducing train full-load run, also can effectively prevent from vibrating short circuit.In the situation that condition license, improve the weight of rigid slab railway roadbed, bottom rigid block, to increase the ratio of constant dead load in total load, thereby reduce the compress variation that variable load produces the two-stage vibration isolation system, the amplitude that the exciting force in the time of also can reducing train operation transmits.The damping steel spring vibration isolator has three dimensional elasticity simultaneously, and the displacement of horizontal direction is little, and the damping steel spring vibration isolator that stability is high can conveniently check and change spring, the height change that capable of regulating causes due to the tunnel structure local sedimentation in basis.Distance between rigid slab railway roadbed and basic rigidity mass is greater than the maximum axial deflection of damping steel spring vibration isolator, and the gap between rigid slab railway roadbed top and tunneling shield section of jurisdiction inwall, damping stop arranges rubber weather strip.
The beneficial effects of the utility model are, the secondary that rail system the is set vibration insulation structure of floating, the regulation of the Dynamic Subsidence amount while meeting subway line for train operation in the Vibration Treatment that can cause at subway, particularly, in the special location of vibration sensing, can more effectively meet the vibration isolation requirement.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the float sectional structural map of facing of first embodiment of vibration insulation structure of the utility model rail system.
Fig. 2 is the constructional drawing of overlooking of Fig. 1.
Fig. 3 is the part section constructional drawing of Fig. 1.
Fig. 4 is the float constructional drawing of overlooking of second embodiment of vibration insulation structure of the utility model rail system.
1. damping stops in figure, 2. basic rigidity mass, the 3. floating rubber vibration insulating pad of building, 4. tunneling shield section of jurisdiction inwall, 5. rigid slab railway roadbed, 6. damping steel spring vibration isolator, 7. track, 8. constraint steel work, 9. waterproof barrier film, 10. gutter, 11. gap, 12. rubber weather strip, 13. prefabricated specification frameworks, 14. floating plate railway roadbeds are installed load-carrying construction.
The specific embodiment
In Fig. 1,2,3 illustrated embodiments, a kind of rail system vibration insulation structure of floating, consist of floating vibrating isolation system, upper strata steel spring floating slab road bed vibrating isolation system and the damping stop (1) built of bottom.The floating vibrating isolation system of building of bottom consists of basic rigidity mass (2) and the floating rubber vibration insulating pad (3) of building, and floatingly builds rubber vibration insulating pad (3) and is arranged between tunneling shield section of jurisdiction inwall (4) and basic rigidity mass (2); Upper strata steel spring floating slab road bed vibrating isolation system consists of rigid slab railway roadbed (5) and damping steel spring vibration isolator (6), track (7) is arranged on rigid slab railway roadbed (5), the built-in damping steel spring vibration isolator of rigid slab railway roadbed (5) (6), damping steel spring vibration isolator (6) is arranged on basic rigidity mass (2).Constraint steel work (8) is set between tunneling shield section of jurisdiction inwall (4) and basic rigidity mass (2) two sides, the floating floating rubber vibration insulating pad (3) of building of building vibrating isolation system of bottom is laid on tunneling shield section of jurisdiction inwall (4) and constraint steel work (8) facade, after laying waterproof barrier film (9), reinforcement cage structure casting concrete formation base rigid block (2) is set in the above.The centre position on basic rigidity mass (2) top arranges gutter (10), and basic rigidity mass (2) arranges rubber weather strip (12) with the gap (11) on constraint steel work (8) top.Damping stop (1) is by steel work and rubber combined making, be arranged between rigid slab railway roadbed (5) two limits and tunneling shield section of jurisdiction inwall (4), along rigid slab railway roadbed (5) central axis, be symmetrical arranged, damping stop (1) is arranged on tunneling shield section of jurisdiction inwall (4).Rigid slab railway roadbed (5) is taked the technique of overall structure field fabrication reinforcement cage structure on-site concrete casting, and damping stop (1) arranges at a certain distance, and the group number of damping stop (1) can be according to the actual conditions adjustment.The built-in damping steel spring vibration isolator (6) of rigid slab railway roadbed (5) is positioned at track (7) outside, at a certain distance, along rigid slab railway roadbed (5) central axis, is symmetrical arranged.Distance between rigid slab railway roadbed (5) and basic rigidity mass (2) is greater than the maximum axial deflection of damping steel spring vibration isolator (6), and the gap (11) between rigid slab railway roadbed (5) top and tunneling shield section of jurisdiction inwall (4), damping stop (1) arranges rubber weather strip (12).
In another embodiment shown in Fig. 4, rigid slab railway roadbed (5) is taked prefabricated specification framework (13), field erected technique, between two prefabricated specification frameworks (13), take the floating plate railway roadbed that load-carrying construction (14) is installed and connect, damping stop (1) is arranged between two prefabricated specification frameworks (13).
Should be appreciated that within not breaking away from scope of the present utility model, can make multiple change to above-described embodiment.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. the rail system vibration insulation structure of floating, build vibrating isolation system, upper strata steel spring floating slab road bed vibrating isolation system and damping stop and form by bottom is floating, it is characterized in that: bottom is floating to be built vibrating isolation system by the basic rigidity mass and floatingly builds rubber vibration insulating pad and form, and floatingly builds rubber vibration insulating pad and is arranged between tunneling shield section of jurisdiction inwall and bottom rigid block; Upper strata steel spring floating slab road bed vibrating isolation system consists of rigid slab railway roadbed and damping steel spring vibration isolator, the damping steel spring vibration isolator be arranged on the basic rigidity mass and between, track is arranged on the rigid slab railway roadbed, and the damping steel spring vibration isolator has the function of adjustable pre-load.
2. a kind of rail system vibration insulation structure of floating according to claim 1, it is characterized in that: between tunneling shield section of jurisdiction inwall and basic rigidity mass two sides, the constraint steel work is set, the floating floating rubber vibration insulating pad of building of building vibrating isolation system of bottom completely is layered on tunneling shield section of jurisdiction inwall and constraint steel work facade, after laying the waterproof barrier film, reinforcement cage structure casting concrete formation base rigid block is set in the above, and floating total load scope of building rubber vibration insulating pad is greater than basic rigidity mass, rigid slab railway roadbed and train maximum load.
3. a kind of rail system vibration insulation structure of floating according to claim 1, it is characterized in that: the centre position on basic rigidity mass top arranges gutter, and the basic rigidity mass arranges rubber weather strip with the gap on constraint steel work top.
4. a kind of rail system vibration insulation structure of floating according to claim 1, it is characterized in that: the rigid slab railway roadbed can be taked the technique of overall structure field fabrication reinforcement cage structure on-site concrete casting, also can take prefabricated specification framework, field erected technique, simultaneously, between two precast constructions, taking the floating plate railway roadbed that load-carrying construction is installed connects.
5. a kind of rail system vibration insulation structure of floating according to claim 1, it is characterized in that: the damping stop is by steel work and rubber combined making, be arranged between rigid slab railway roadbed two limits and tunnel structure, along rigid slab railway roadbed central axis, be symmetrical arranged, the damping stop is arranged on the inwall of tunneling shield section of jurisdiction.
6. a kind of rail system vibration insulation structure of floating according to claim 4, it is characterized in that: when the rigid slab railway roadbed is taked overall structure, the damping stop arranges at a certain distance, the group number of damping stop can be according to the actual conditions adjustment, when the rigid slab railway roadbed is taked precast construction, the damping stop is arranged between two precast constructions, the total load scope of damping stop is greater than the dynamic load sum of dynamic load and the rigid slab railway roadbed of train maximum, the damping stop has horizontal cross and lengthwise position is adjusted function, can adjust the spacing with the rigid slab railway roadbed.
7. according to the described a kind of rail system of the claim l vibration insulation structure of floating, it is characterized in that: the built-in damping steel spring vibration isolator of rigid slab railway roadbed is positioned at the track outside, at a certain distance, along rigid slab railway roadbed central axis, is symmetrical arranged, to enlarge loaded area, improve the harmony of bearing load; Average dynamic load sum when the dead load that the best load scope of damping steel spring vibration isolator is the rigid slab railway roadbed, ancillary service dead load and train operation.
8. a kind of rail system vibration insulation structure of floating according to claim 1, it is characterized in that: described damping steel spring vibration isolator has the function of adjustable pre-load, total load when pre-load scope should be lower than train no-load running is more than 5%, elastic deformation amount when reducing train operation during damping steel spring vibration isolator pressurized, the rail system regulation of Dynamic Subsidence amount of vibration insulation structure of floating while meeting train full-load run, the damping steel spring vibration isolator has three dimensional elasticity simultaneously, the displacement of horizontal direction is little, the damping steel spring vibration isolator that stability is high, can conveniently check and change spring, the height change that capable of regulating causes due to the tunnel structure local sedimentation in basis.
9. a kind of rail system vibration insulation structure of floating according to claim 1, it is characterized in that: the distance between rigid slab railway roadbed and basic rigidity mass is greater than the maximum axial deflection of damping steel spring vibration isolator, and the gap between rigid slab railway roadbed top and tunneling shield section of jurisdiction inwall, damping stop arranges rubber weather strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320449047 CN203360950U (en) | 2013-07-26 | 2013-07-26 | Floating vibration isolation structure of track system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320449047 CN203360950U (en) | 2013-07-26 | 2013-07-26 | Floating vibration isolation structure of track system |
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| CN203360950U true CN203360950U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320449047 Withdrawn - After Issue CN203360950U (en) | 2013-07-26 | 2013-07-26 | Floating vibration isolation structure of track system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603241A (en) * | 2013-07-26 | 2014-02-26 | 厦门嘉达环保建造工程有限公司 | Floating vibration isolation structure of track system |
| CN114000378A (en) * | 2021-09-29 | 2022-02-01 | 东南大学 | Shield tunnel and prefabricated vibration reduction type back cover segment thereof |
-
2013
- 2013-07-26 CN CN 201320449047 patent/CN203360950U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603241A (en) * | 2013-07-26 | 2014-02-26 | 厦门嘉达环保建造工程有限公司 | Floating vibration isolation structure of track system |
| CN103603241B (en) * | 2013-07-26 | 2016-08-10 | 北京九州一轨隔振技术有限公司 | Floating vibration isolation structure of track system |
| CN114000378A (en) * | 2021-09-29 | 2022-02-01 | 东南大学 | Shield tunnel and prefabricated vibration reduction type back cover segment thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20160810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |