CN103882784A - Pressure reduction and shock absorption structure between ballast bead and ground beam - Google Patents
Pressure reduction and shock absorption structure between ballast bead and ground beam Download PDFInfo
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- CN103882784A CN103882784A CN201410065603.XA CN201410065603A CN103882784A CN 103882784 A CN103882784 A CN 103882784A CN 201410065603 A CN201410065603 A CN 201410065603A CN 103882784 A CN103882784 A CN 103882784A
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- railway roadbed
- grade beam
- vibration isolation
- isolation plate
- concrete cushion
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Abstract
The invention discloses a pressure reduction and shock absorption structure between a ballast bed and a ground beam. The pressure reduction and shock absorption structure comprises the ballast bed and the ground beam. The ballast bed comprises a ballast bed base backfill layer, a concrete cushion and a ballast bed bottom plate which are sequentially arranged from bottom to top, a first vibration isolation plate which is adjacent to the bottom of the concrete cushion is arranged right above the ground beam, the first vibration isolation plate and the concrete cushion are respectively separated from the ground beam by a certain gap, and the gap is filled with a loose soil backfill layer. The pressure reduction and shock absorption structure between the ballast bed and the ground beam has the advantages that the pressure which is applied by the ballast bed on the ground beam can be effectively reduced, and shock on the ground beam and an upper structure connected with the ground beam due to vehicles which run on the ballast bed can be weakened.
Description
Technical field
The present invention relates to the decompression shock-damping structure between a kind of railway roadbed and grade beam.
Background technology
At present, along with the construction of domestic a large amount of rolling stock sections and upper cover exploitation, in order to meet rolling stock section's ballast bed of track from many-sided requirements such as relative settlement control and top shock insulations, all require railway roadbed and superstructure to throw off.
But, according to regulations such as existing earthquake resistant codes, between the pile foundation support table of superstructure, require drawknot grade beam (superstructure is connected with drawknot grade beam) is set, and this ground beam span large (if there are two station tracks, span is often more than 12m).So,, if grade beam is born railway roadbed load again, what must need the section of grade beam to do is very large.And railway roadbed is directly pressed on grade beam, its vehicular vibration also brings adverse effect to the normal use of superstructure.
Summary of the invention
The present invention seeks to: for the problems referred to above, provide the shock-damping structure of the decompression between a kind of railway roadbed and grade beam, effectively to reduce the pressure of railway roadbed to grade beam, to weaken the grade beam causing because of the Vehicle Driving Cycle on railway roadbed and the vibrations of the superstructure being connected with grade beam.
Technical scheme of the present invention is: the decompression shock-damping structure between a kind of railway roadbed and grade beam, comprise railway roadbed and grade beam, described railway roadbed comprises railway roadbed substrate backfill layer, concrete cushion and the railway roadbed base plate from bottom to top arranged successively, directly over described grade beam, be provided with the first vibration isolation plate that is close to described concrete cushion bottom, described the first vibration isolation plate and concrete cushion all separate certain interval with described grade beam, and are filled with loose ground backfill layer in this gap.
As preferably, near concrete cushion described grade beam is inverted U structure, this inverted U structure is made up of horizontal top wall and two vertical side walls being positioned at this horizontal top wall left and right sides, described the first vibration isolation plate is close to and is arranged in described horizontal top wall bottom and contacts with described two vertical side walls, the top of described grade beam stretch into described inverted U inside configuration and and the first vibration isolation plate and described two vertical side walls between separate a fixed gap, described loose ground backfill layer is arranged in this space.
As preferably, directly over described grade beam, be also provided with the second vibration isolation plate being arranged between described railway roadbed base plate and concrete cushion.
As preferably, described the second vibration isolation plate is polyphenyl plate or phenolic foam board.
As preferably, the thickness of described the second vibration isolation plate is 100mm.
As preferably, described the first vibration isolation plate is polyphenyl plate or phenolic foam board.
As preferably, the thickness of described the first vibration isolation plate is 100mm.
As preferably, the supporting capacity of described railway roadbed substrate backfill layer is not less than 120Kpa.
As preferably, described railway roadbed base plate is reinforced concrete structure.
As preferably, described concrete cushion adopts C15 pouring concrete to form.
Advantage of the present invention is:
1, because in the present invention, not directly contact between railway roadbed (the especially concrete cushion of railway roadbed bottom) and grade beam, but between grade beam and railway roadbed, be provided with relatively soft the first vibration isolation plate and loose ground backfill layer, so, in the time that the driving vehicle of railway roadbed top causes that vibration occurs for railway roadbed base plate and concrete cushion, vibration just must just can pass to grade beam by the first vibration isolation plate between concrete cushion and grade beam and loose ground backfill layer, and then passes to superstructure by grade beam.And because the first vibration isolation plate is relative with loose ground backfill layer soft, there is shock-absorbing function, will decay gradually when the vibration going down of concrete cushion like this, arrive grade beam after vibration amplitude almost nil, also effectively isolated Vehicle Driving Cycle and shaken the path that is delivered to superstructure, the vibration effect of the superstructure that reduction Vehicle Driving Cycle is connected to grade beam and with grade beam.
2, owing to not being direct rigid contact between grade beam and railway roadbed, but between the two, be provided with the cushion coat being formed by the first vibration isolation plate and loose ground backfill layer.Due to the existence of cushion coat, the overwhelming majority of the suffered load force of railway roadbed will directly be delivered to underground through railway roadbed substrate backfill layer, thereby has effectively reduced the pressure of railway roadbed to grade beam.Because the grade beam in the present embodiment no longer need to bear very large upper pressure like that with traditional structure, in the time of construction, just can reduce grade beam sectional dimension like this, reduce the production material of grade beam, reduce costs.
3, the construction method of this structure is simple, has good generalization.
4, the second vibration isolation plate of the setting between railway roadbed base plate and concrete cushion has further strengthened decompression damping effect of the present invention.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the cross-sectional view of the embodiment of the present invention.
Wherein: 1-grade beam, 2-railway roadbed base plate, 201-railway roadbed base plate muscle, 3-concrete cushion, 301-horizontal top wall, 302-vertical side walls, 4-the first vibration isolation plate, 5-railway roadbed substrate backfill layer, 6-the second vibration isolation plate, 7-loose ground backfill layer.
The specific embodiment
Embodiment: Fig. 1 has shown a specific embodiment of the decompression shock-damping structure between this railway roadbed of the present invention and grade beam, it comprises grade beam 1, and the railway roadbed substrate backfill layer 5(from bottom to top arranging is successively generally earth rock material), concrete cushion 3 and railway roadbed base plate 2, wherein railway roadbed substrate backfill layer 5, concrete cushion 3 and railway roadbed base plate 2 are all parts for railway roadbed, railway roadbed base plate 2 is reinforced concrete structure, and what concrete cushion 3 adopted is C15 concrete material.
The key improvements of the present embodiment is: directly over described grade beam 1, be provided with the first vibration isolation plate 4 that is close to described concrete cushion 3 bottoms, described the first vibration isolation plate 4 and concrete cushion 3 all separate certain interval with described grade beam 1, and are furnished with loose ground backfill layer 7 in this gap.
Because in the present embodiment, not directly contact between railway roadbed (the specifically concrete cushion of railway roadbed bottom) and grade beam 1, but between grade beam and railway roadbed, be provided with relatively soft the first vibration isolation plate 4 and loose ground backfill layer 7, so, in the time that the driving vehicle of railway roadbed top causes that vibration occurs for railway roadbed base plate 2 and concrete cushion 3, vibration just must just can pass to grade beam 1 by the first vibration isolation plate 4 between concrete cushion 3 and grade beam and loose ground backfill layer 7, and then passes to superstructure by grade beam 1.And because the first vibration isolation plate 4 is relative with loose ground backfill layer 7 soft, there is shock-absorbing function, will decay gradually when the vibration going down of concrete cushion 3 like this, arrive grade beam 1 after vibration amplitude almost nil, also effectively isolated Vehicle Driving Cycle and shaken the path that is delivered to superstructure, the vibration effect of the superstructure that reduction Vehicle Driving Cycle is connected to grade beam and with grade beam.
And, owing to not being direct rigid contact between grade beam 1 and railway roadbed, but between the two, be provided with the cushion coat being formed by the first vibration isolation plate 4 and loose ground backfill layer 7.Due to the existence of cushion coat, the overwhelming majority of the suffered load force of railway roadbed will directly be delivered to underground through railway roadbed substrate backfill layer 5, thereby has effectively reduced the pressure of railway roadbed to grade beam 1.Because the grade beam 1 in the present embodiment no longer need to bear very large upper pressure like that with traditional structure, so just can greatly reduce grade beam 1 sectional dimension, reduce the production material of grade beam 1, reduce costs.
In order further to reduce the pressure of railway roadbed to grade beam 1, and isolate better Vehicle Driving Cycle vibrations and be delivered to the path of superstructure, near the concrete cushion 3 described grade beam 1 is arranged to inverted U structure by the present embodiment, this inverted U structure is by horizontal top wall 301, form with two vertical side walls 302 that are positioned at this horizontal top wall left and right sides, described the first vibration isolation plate 4 is close to and is arranged in described horizontal top wall 301 bottoms, and contact with described two vertical side walls 302, described inverted U inside configuration is stretched on the top of described grade beam 1, and between the top of described grade beam 1 and the first vibration isolation plate 4 and described two vertical side walls 302, separating a fixed gap (is to separate a fixed gap between the top of grade beam and the first vibration isolation plate, between the top of grade beam and two vertical side walls, also separate a fixed gap, here said " space ", and above " gap " between said the first vibration isolation plate, concrete cushion and described grade beam is same implication, here why adopt another saying, in order to allow reader be easier to understand technical scheme of the present invention), described loose ground backfill layer 7 is just arranged in this space.
In addition, this example is also also provided with the second vibration isolation plate 6 being arranged between described railway roadbed base plate 2 and concrete cushion 3 directly over described grade beam 1.Thereby further reduce the pressure of railway roadbed to grade beam 1, the vibrations of isolation Vehicle Driving Cycle are delivered to the path of superstructure.
In this example, described the first vibration isolation plate 4 and the second vibration isolation plate 6 are polyphenyl plate, and certainly, they also just can adopt phenolic foam board etc., and other have the plate material of lightweight, vibration isolation and changeability performance.If the thickness of vibration isolation plate is too little, can reduce the shake-resistance pressure-reducing effect of grade beam 1; If the thickness of vibration isolation plate is excessive, can increase again the cost of raw of construction.Based on this consideration, in this example, the thickness of described the second vibration isolation plate 6 and described the first vibration isolation plate 4 is all set to 100mm.
In conjunction with shown in Fig. 1, existing by as follows the construction method brief introduction of the decompression shock-damping structure between this present embodiment railway roadbed and grade beam again:
1) excavation formation excavation area, ground;
2) in excavation area, arrange grade beam 1;
3) in excavation area, backfill stone forms railway roadbed substrate backfill layer 5 and loose ground backfill layer 7, and railway roadbed substrate backfill layer 5 is done to compacting and process, after processing with assurance, the bearing capacity of this railway roadbed substrate backfill layer 5 is not less than railway roadbed requirement, and General Requirements is not less than 120Kpa;
4) on loose ground backfill layer 7, lay the first vibration isolation plate 4, and guarantee that the first vibration isolation plate 4 of laying is just in time directly over grade beam 1;
5) then at described railway roadbed substrate backfill layer 5, loose ground backfill layer 7 with pour into a mould C15 concrete above the first vibration isolation plate 4, form concrete cushion 3, generally the thickness of this concrete cushion 3 is preferably 100mm;
6) solidify and reach after some strength until concrete cushion 3, on concrete cushion 3, lay the second vibration isolation plate 6, and guarantee that the second vibration isolation plate 6 is just in time directly over grade beam 1;
7) finally at concrete cushion 3 and sandwiched railway roadbed base plate muscle 201 above the second vibration isolation plate 6, fluid concrete afterwards, thus form the railway roadbed base plate 2 of reinforced concrete structure.
This construction method is simple.
Certainly, above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow people can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformation or modification that according to the present invention, the Spirit Essence of main technical schemes does, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. the decompression shock-damping structure between a railway roadbed and grade beam, comprise railway roadbed and grade beam (1), described railway roadbed comprises railway roadbed substrate backfill layer (5), concrete cushion (3) and the railway roadbed base plate (2) from bottom to top arranged successively, it is characterized in that: directly over described grade beam (1), be provided with the first vibration isolation plate (4) that is close to described concrete cushion (3) bottom, described the first vibration isolation plate (4) and concrete cushion (3) all separate certain interval with grade beam (1), and in this gap, are filled with loose ground backfill layer (7).
2. the decompression shock-damping structure between railway roadbed according to claim 1 and grade beam, it is characterized in that: near the concrete cushion (3) described grade beam (1) is inverted U structure, this inverted U structure is by horizontal top wall (301), form with two vertical side walls (302) that are positioned at this horizontal top wall left and right sides, described the first vibration isolation plate (4) is close to and is arranged in described horizontal top wall (301) bottom, and contact with described two vertical side walls (302), described inverted U inside configuration is stretched on the top of described grade beam (1), and and separate a fixed gap between the first vibration isolation plate (4) and described two vertical side walls (302), described loose ground backfill layer (7) is arranged in this space.
3. the decompression shock-damping structure between railway roadbed according to claim 1 and grade beam, is characterized in that: directly over described grade beam (1), be also provided with the second vibration isolation plate (6) being arranged between described railway roadbed base plate (2) and concrete cushion (3).
4. the decompression shock-damping structure between railway roadbed according to claim 3 and grade beam, is characterized in that: described the second vibration isolation plate (6) is polyphenyl plate or phenolic foam board.
5. the decompression shock-damping structure between railway roadbed according to claim 4 and grade beam, is characterized in that: the thickness of described the second vibration isolation plate (6) is 100mm.
6. according to the railway roadbed described in arbitrary claim in claim 1～5 and the decompression shock-damping structure between grade beam, it is characterized in that: described the first vibration isolation plate (4) is polyphenyl plate or phenolic foam board.
7. the decompression shock-damping structure between railway roadbed according to claim 6 and grade beam, is characterized in that: the thickness of described the first vibration isolation plate (4) is 100mm.
8. according to the railway roadbed described in arbitrary claim in claim 1～5 and the decompression shock-damping structure between grade beam, it is characterized in that: the bearing capacity of described railway roadbed substrate backfill layer (5) is not less than 120Kpa.
9. according to the railway roadbed described in arbitrary claim in claim 1～5 and the decompression shock-damping structure between grade beam, it is characterized in that: described railway roadbed base plate (2) is reinforced concrete structure.
10. according to the railway roadbed described in arbitrary claim in claim 1～5 and the decompression shock-damping structure between grade beam, it is characterized in that: described concrete cushion (3) adopts C15 concreting to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410065603.XA CN103882784B (en) | 2014-02-26 | 2014-02-26 | Decompression shock-damping structure between railway roadbed and grade beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410065603.XA CN103882784B (en) | 2014-02-26 | 2014-02-26 | Decompression shock-damping structure between railway roadbed and grade beam |
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| CN103882784A true CN103882784A (en) | 2014-06-25 |
| CN103882784B CN103882784B (en) | 2015-08-12 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19831404A1 (en) * | 1998-07-15 | 2000-01-27 | Vogel Bau Gmbh | Track installation for rail vehicles comprises upper structure with rails supported on sleepers and sub-structure with support plate bearing and laterally supporting upper structure |
| EP1380687A1 (en) * | 2002-07-09 | 2004-01-14 | Pfleiderer Infrastrukturtechnik GmbH & Co. KG | Sleeper with dowel stone and method for making a ballastless track |
| WO2006102866A1 (en) * | 2005-03-26 | 2006-10-05 | Rail.One Gmbh | Method for correcting the height of a fixed railway track |
| CN202030994U (en) * | 2011-04-25 | 2011-11-09 | 中交第四航务工程勘察设计院有限公司 | Rail base structure capable of resisting horizontal force and vertical force |
| CN102653931A (en) * | 2011-03-04 | 2012-09-05 | 北京市劳动保护科学研究所 | Elastic supporting vibration isolation member ballast bed |
| KR101184606B1 (en) * | 2010-02-02 | 2012-09-21 | 조경호 | Concrete ballast rail accepting dusproof pad having improved structure |
| CN202509337U (en) * | 2012-01-17 | 2012-10-31 | 青岛市地下铁道公司 | Vibration-damping noise-reducing integral ballast bed with constrained damping structure |
-
2014
- 2014-02-26 CN CN201410065603.XA patent/CN103882784B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19831404A1 (en) * | 1998-07-15 | 2000-01-27 | Vogel Bau Gmbh | Track installation for rail vehicles comprises upper structure with rails supported on sleepers and sub-structure with support plate bearing and laterally supporting upper structure |
| EP1380687A1 (en) * | 2002-07-09 | 2004-01-14 | Pfleiderer Infrastrukturtechnik GmbH & Co. KG | Sleeper with dowel stone and method for making a ballastless track |
| WO2006102866A1 (en) * | 2005-03-26 | 2006-10-05 | Rail.One Gmbh | Method for correcting the height of a fixed railway track |
| KR101184606B1 (en) * | 2010-02-02 | 2012-09-21 | 조경호 | Concrete ballast rail accepting dusproof pad having improved structure |
| CN102653931A (en) * | 2011-03-04 | 2012-09-05 | 北京市劳动保护科学研究所 | Elastic supporting vibration isolation member ballast bed |
| CN202030994U (en) * | 2011-04-25 | 2011-11-09 | 中交第四航务工程勘察设计院有限公司 | Rail base structure capable of resisting horizontal force and vertical force |
| CN202509337U (en) * | 2012-01-17 | 2012-10-31 | 青岛市地下铁道公司 | Vibration-damping noise-reducing integral ballast bed with constrained damping structure |
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| CN103882784B (en) | 2015-08-12 |
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Address after: 215021 Suzhou Industrial Park, Jiangsu Xinghai street, No. 9 Co-patentee after: University of Science and Technology of Suzhou Patentee after: Design group Limited by Share Ltd Address before: 215021 Suzhou Industrial Park, Jiangsu Xinghai street, No. 9 Co-patentee before: University of Science and Technology of Suzhou Patentee before: Suzhou Institute of Architectural Design Co., Ltd. |
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