CN114183165B - Elastic composite duct piece for special vibration reduction section - Google Patents
Elastic composite duct piece for special vibration reduction section Download PDFInfo
- Publication number
- CN114183165B CN114183165B CN202111422881.2A CN202111422881A CN114183165B CN 114183165 B CN114183165 B CN 114183165B CN 202111422881 A CN202111422881 A CN 202111422881A CN 114183165 B CN114183165 B CN 114183165B
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- shaped steel
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- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 89
- 239000010959 steel Substances 0.000 claims abstract description 89
- 239000002245 particle Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000013016 damping Methods 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000003351 stiffener Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to an elastic composite segment for a special vibration reduction section, and belongs to the field of urban rail transit vibration reduction design. The duct piece comprises an inner steel member, a rubber concrete elastic filling layer and an outer steel member. The inner layer steel member comprises inner layer arc steel plate, stiffening rib and stiffening plate, is equipped with lifting hole and connecting bolt hole on the inner layer arc steel plate to the rubber damping strip is pasted at the outer lane. The outer layer steel member comprises outer arc steel sheet, end plate, curb plate, stiffening rib and stiffening plate, is equipped with the connecting bolt hole that aligns with inlayer steel member on end plate and the curb plate. Rubber concrete materials are filled in the inner and outer steel members, thereby forming the rigid-elastic-rigid composite pipe sheet. When vibration waves generated during subway train operation pass through the elastic composite pipe piece, the elastic rubber concrete layer can effectively dissipate vibration energy, so that vibration and noise in a subway tunnel are greatly reduced and transmitted to the outer side of the tunnel.
Description
Technical Field
The invention belongs to the field of urban rail transit vibration damping design, and particularly relates to an elastic composite duct piece for a special vibration damping section.
Background
Urban rail transit brings convenience to travel and also causes a series of vibration environment problems. Vibration generated by subway operation is transmitted to the ground surface through mediums such as a track, a tunnel and soil, so that the vibration of buildings along the line is caused, and the daily life of residents and the normal operation of precise instruments are affected. In order to solve the problem of environmental vibration caused by urban rail transit, various types of vibration damping fasteners and tracks are generally used for vibration damping treatment on the lines, including rail vibration damping, sleeper vibration damping, fastener vibration damping, floating track bed vibration damping and the like. However, in certain sections that are sensitive to environmental vibrations, existing urban rail transit damping designs have difficulty meeting damping requirements. Therefore, the novel vibration reduction measures can be adopted from the vibration isolation measures in the vibration propagation path, and the effect of the vibration reduction design of the rail transit is enhanced.
The shield tunnel segment is a necessary path for the vibration generated by the subway train to propagate to the outside, and the existing traditional shield tunnel segment meets the strength requirement and is not subjected to vibration reduction design. Therefore, how to design a shield tunnel segment which not only can meet the structural strength requirement of a subway tunnel, but also has a vibration reduction effect becomes an urgent need in the industry.
Disclosure of Invention
Aiming at the requirements of vibration control in the track traffic environment at present, the invention aims to provide the elastic composite pipe piece for the special vibration reduction section, which can dissipate the vibration energy of a subway train on the premise of meeting the requirement of the strength of a tunnel structure and reduce the transmission of vibration and noise in the subway tunnel to the outer side of the tunnel so as to achieve the purpose of vibration reduction.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an elastic composite pipe piece for a special vibration reduction section comprises an inner layer steel member, a rubber concrete elastic filling layer and an outer layer steel member, wherein the inner layer steel member and the outer layer steel member are combined into the composite pipe piece, and the rubber concrete elastic filling layer is filled in the composite pipe piece;
The inner layer steel member comprises an inner layer arc-shaped steel plate, the inner layer arc-shaped steel plate is an arc-shaped plate, a plurality of stiffening ribs which are parallel to each other are arranged on the arc-shaped convex surface of the inner layer arc-shaped steel plate along the length direction, and a stiffening plate is arranged at the edge of each stiffening rib;
Longitudinal seam bent bolt sleeves are arranged on two sides of the inner arc-shaped steel plate in the short direction, and circular seam inclined bolt sleeves are arranged on one side of the inner steel member in the long direction;
The outer steel member comprises an outer arc-shaped steel plate, the outer arc-shaped steel plate is an arc-shaped plate matched with the length, the width and the radian of the inner arc-shaped steel plate, end plates are respectively arranged on the two short sides of the outer arc-shaped steel plate, side plates with corresponding radians are respectively arranged on the two long sides of the outer arc-shaped steel plate, a plurality of stiffening ribs which are parallel to each other are also arranged on the arc-shaped concave surface of the outer arc-shaped steel plate along the length direction, and a stiffening plate is also arranged on the edge of each stiffening rib;
the end plate is provided with a reserved bolt hole corresponding to the longitudinal seam bent bolt sleeve, one side plate of the outer arc-shaped steel plate is provided with a reserved oblique bolt hole corresponding to the circular seam oblique bolt sleeve, and the other side plate is provided with an oblique bolt threaded pipe;
The inclined bolt threaded pipe corresponds to the circular seam inclined bolt sleeve of the adjacent composite pipe piece through the reserved inclined bolt hole, and the longitudinal seam bent bolt sleeve corresponds to the longitudinal seam bent bolt sleeve of the adjacent composite pipe piece through the reserved bent bolt hole.
As a further preferable scheme, a hoisting hole is formed in the inner-layer arc-shaped steel plate.
As a further preferable scheme, rubber vibration reduction strips with the thickness of 5mm are adhered to the outer ring of the inner arc-shaped steel plate, the stiffening ribs and the two ends of the stiffening plates.
As a further preferable scheme, the stiffening ribs on the inner arc-shaped steel plates and the stiffening ribs on the outer arc-shaped steel plates are mutually staggered.
As a further preferred embodiment, the stiffener is perpendicular to the stiffener.
As a further preferable scheme, a longitudinal seam bending bolt sleeve is arranged between two adjacent stiffening ribs.
As a further preferable scheme, a plurality of circular seam oblique bolt sleeves are arranged on the inner arc-shaped steel plate, and the circular seam oblique bolt sleeves are equidistantly arranged along one side of the inner arc-shaped steel plate in the longitudinal direction.
As a further preferable scheme, the rubber concrete elastic filling layer is an elastic composite material formed by adding rubber powder or rubber blocks with the content of less than 30% into concrete; wherein the particle size range of the rubber block is 4.75-40 mm, and the particle size range of the rubber powder is 0.10-4.75 mm.
Advantageous effects
The invention designs a rigid-flexible-rigid composite duct piece by utilizing the characteristics of high strength of steel and vibration reduction of elastic rubber concrete and combining and collocating, which can meet the strength requirement of a tunnel structure and has better vibration reduction effect. In the inner and outer steel members, the H-shaped steel structure is formed by connecting the arc-shaped steel plates, the stiffening ribs and the stiffening plates, so that the strength requirements of bending resistance and compression resistance of tunnel duct pieces can be met.
The rubber concrete layer is filled in the inner steel member and the outer steel member, so that the two rigid members are not directly connected, vibration energy of a subway train is dissipated through damping benefit of the rubber concrete, vibration and noise in a subway tunnel are reduced to be transmitted to the outer side of the tunnel, and the purpose of vibration reduction is achieved.
Drawings
FIG. 1 is a schematic view of an elastic composite segment for a special vibration damping section according to the present invention;
FIG. 2 is a schematic view of the inner steel member structure of the present invention;
FIG. 3 is a schematic view of the outer layer steel member of the present invention;
FIG. 4 is a top view of an elastic composite segment for a special vibration reduction segment according to the present invention;
FIG. 5 is a cross-sectional view of an elastic composite segment A-A for a particular vibration damping segment according to the present invention;
FIG. 6 is a cross-sectional view of an elastic composite segment B-B for a special vibration damping section according to the present invention;
fig. 7 is a schematic view of the damping effect of the elastic composite segment for a special damping section according to the present invention.
Reference numerals:
1. An inner layer steel member; 11. an inner arc steel plate; 12. a hoisting hole; 13. bending the bolt sleeve through the longitudinal seam; 14. circular seam oblique bolt sleeve; 15. rubber vibration damping strips; 2. an outer layer steel member; 21. an outer arc-shaped steel plate; 22. an end plate; 23. a side plate; 24. oblique bolt holes; 25. a beveled bolt threaded tube; 26. bending bolt holes; 3. rubber concrete; 4. stiffening ribs; 5. and (5) stiffening the plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1, an elastic composite segment for a special vibration reduction section of the present embodiment includes an inner steel member 1, a rubber concrete elastic filler layer 3, and an outer steel member 2.
As shown in fig. 2, the inner steel member 1 employed in the present embodiment includes an inner arc-shaped steel plate 11, a stiffener 4, and a stiffener 5. And a lifting hole 12 is formed in the inner arc-shaped steel plate 11 and is used for lifting, moving and splicing the duct pieces.
The inner arc-shaped steel plate 11 is reserved with 4 longitudinal seam bent bolt sleeves 13 and 3 circular seam inclined bolt sleeves 14, and the adjacent special vibration reduction sections are connected with the bolt sleeves in a penetrating way through inclined bolts or bent bolts.
Rubber vibration damping strips with the thickness of 5mm are adhered to the outer ring of the inner arc-shaped steel plate, the stiffening ribs and the two ends of the stiffening plate.
As shown in fig. 3, the outer steel member 2 used in the present embodiment includes an outer arc-shaped steel plate 21, 2 end plates 22, 2 side plates 23, a stiffener 4, and a stiffener 5.
Each end plate 22 is provided with 2 pre-formed bent bolt holes 26 for the splicing of the longitudinal split bent bolts.
One side plate 23 is provided with 3 reserved oblique bolt holes 24, and the other side plate 23 is provided with 3 oblique bolt threaded pipes for splicing and fastening the circular seam oblique bolts.
As shown in fig. 4 to 6, in this embodiment, 3 stiffening ribs 4 and stiffening plates 5 are arranged on the inner arc-shaped steel plate 11 and the outer arc-shaped steel plate 21 at uniform intervals in a crossing manner, so as to form 6H-shaped steel structures.
In the embodiment, the reserved bolt sleeves in the inner steel member 1 and the outer steel member 2 are aligned with the bolt holes in a matched manner, so that the pipe piece production device can be used for temporarily positioning and connecting the two steel members until the high-temperature steam curing of the rubber concrete is finished.
In this embodiment, rubber concrete is filled between the inner steel member 1 and the outer steel member 2 to form a rubber concrete elastic filling layer 3. The rubber concrete elastic filling layer 3 is an elastic composite material which is prepared by adding rubber blocks with the content of 10% and the grain diameter of 5mm into concrete. The inner steel member 1 and the outer steel member 2 are both made of Q345 steel.
As shown in fig. 7, the vibration damping effect of the elastic composite segment for a special vibration damping section of the present embodiment was calculated by numerical simulation. And under the action of train load, comparing the acceleration value of the outer wall of the vault of the common segment tunnel with that of the elastic composite segment tunnel adopted by the invention. The maximum acceleration of the common segment tunnel under the action of the train load reaches 0.34m/s2, and the maximum acceleration of the shield tunnel assembled by the invention is only 0.02m/s2, so that the vibration reduction effect of the invention is better.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. An elastic composite segment for a special vibration reduction section, which is characterized in that: the composite pipe piece comprises an inner layer steel member (1), a rubber concrete elastic filling layer (3) and an outer layer steel member (2), wherein the inner layer steel member (1) and the outer layer steel member (2) are combined into the composite pipe piece, and the rubber concrete elastic filling layer (3) is filled in the composite pipe piece;
The inner-layer steel member (1) comprises an inner-layer arc-shaped steel plate (11), wherein the inner-layer arc-shaped steel plate (11) is an arc-shaped plate, a plurality of stiffening ribs (4) which are parallel to each other are arranged on the arc-shaped convex surface of the inner-layer arc-shaped steel plate (11) along the length direction, and a stiffening plate (5) is arranged at the edge of each stiffening rib (4);
Longitudinal seam bent bolt sleeves (13) are arranged on two sides of the inner arc-shaped steel plate (11) in the short direction, and circular seam inclined bolt sleeves (14) are arranged on one side of the inner steel member (1) in the long direction;
The outer-layer steel member (2) comprises an outer-layer arc-shaped steel plate (21), the outer-layer arc-shaped steel plate (21) is an arc-shaped plate matched with the inner-layer arc-shaped steel plate (11) in length, width and radian, end plates (22) are respectively arranged on two short-direction sides of the outer-layer arc-shaped steel plate (21), side plates (23) with corresponding radians are respectively arranged on two long-direction sides of the outer-layer arc-shaped steel plate (21), a plurality of stiffening ribs (4) which are parallel to each other are also arranged on the arc-shaped concave surface of the outer-layer arc-shaped steel plate (21) along the length direction, and a stiffening plate (5) is also arranged on the edge of the stiffening rib (4);
The end plate (22) is provided with a reserved bent bolt hole (26) corresponding to the longitudinal seam bent bolt sleeve (13), one side plate (23) of the outer arc-shaped steel plate (21) is provided with a reserved inclined bolt hole (24) corresponding to the circular seam inclined bolt sleeve (14), and the other side plate (23) is provided with an inclined bolt threaded pipe (25);
The inclined bolt threaded pipe (25) corresponds to the circular seam inclined bolt sleeve (14) of the adjacent composite pipe piece through the reserved inclined bolt hole (24), and the longitudinal seam bent bolt sleeve (13) corresponds to the longitudinal seam bent bolt sleeve (13) of the adjacent composite pipe piece through the reserved bent bolt hole (26).
2. An elastic composite segment for a special vibration reduction segment according to claim 1, wherein: and a lifting hole (12) is formed in the inner-layer arc-shaped steel plate (11).
3. An elastic composite segment for a special vibration reduction segment according to claim 1, wherein: rubber vibration reduction strips (15) with the thickness of 5mm are adhered to the outer ring of the inner arc-shaped steel plate (11), the stiffening ribs (4) and the two ends of the stiffening plate (5).
4. An elastic composite segment for a special vibration reduction segment according to claim 1, wherein: the stiffening ribs (4) on the inner arc-shaped steel plates (11) and the stiffening ribs (4) on the outer arc-shaped steel plates (21) are arranged in a staggered mode.
5. An elastic composite segment for a special vibration reduction segment according to claim 1, wherein: the stiffening plate (5) is perpendicular to the stiffening ribs (4).
6. An elastic composite segment for a special vibration reduction segment according to claim 1, wherein: a longitudinal seam bent bolt sleeve (13) is arranged between two adjacent stiffening ribs (4).
7. An elastic composite segment for a special vibration reduction segment according to claim 1, wherein: a plurality of circular seam oblique bolt sleeves (14) are arranged on the inner arc-shaped steel plate (11), and the circular seam oblique bolt sleeves (14) are equidistantly arranged along one side of the inner arc-shaped steel plate (11) in the long direction.
8. An elastic composite segment for a special vibration reduction segment according to claim 1, wherein: the rubber concrete elastic filling layer (3) is an elastic composite material formed by adding rubber powder or rubber blocks with the content of less than 30% into concrete; wherein the particle size range of the rubber block is 4.75-40 mm, and the particle size range of the rubber powder is 0.10-4.75 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422881.2A CN114183165B (en) | 2021-11-26 | 2021-11-26 | Elastic composite duct piece for special vibration reduction section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422881.2A CN114183165B (en) | 2021-11-26 | 2021-11-26 | Elastic composite duct piece for special vibration reduction section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183165A CN114183165A (en) | 2022-03-15 |
| CN114183165B true CN114183165B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111422881.2A Active CN114183165B (en) | 2021-11-26 | 2021-11-26 | Elastic composite duct piece for special vibration reduction section |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002250398A (en) * | 2001-02-22 | 2002-09-06 | Mitsubishi Heavy Ind Ltd | Vibration damping cover |
| CN104695974A (en) * | 2015-03-06 | 2015-06-10 | 北京城建设计发展集团股份有限公司 | Shock absorbing method and structure for rail traffic underground engineering |
| CN207111110U (en) * | 2017-08-03 | 2018-03-16 | 华东交通大学 | A kind of particle damping energy dissipation vibration damping subway segment |
| CN209066197U (en) * | 2018-08-21 | 2019-07-05 | 中铁建设集团有限公司 | A kind of bridge builds the shock absorption system of unification high-speed rail station support rail layer structural column |
| WO2021051706A1 (en) * | 2019-09-19 | 2021-03-25 | 中铁第四勘察设计院集团有限公司 | Vibration reduction section prefabricated ballastless track structure having longitudinal connecting structure, and assembly method |
-
2021
- 2021-11-26 CN CN202111422881.2A patent/CN114183165B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002250398A (en) * | 2001-02-22 | 2002-09-06 | Mitsubishi Heavy Ind Ltd | Vibration damping cover |
| CN104695974A (en) * | 2015-03-06 | 2015-06-10 | 北京城建设计发展集团股份有限公司 | Shock absorbing method and structure for rail traffic underground engineering |
| CN207111110U (en) * | 2017-08-03 | 2018-03-16 | 华东交通大学 | A kind of particle damping energy dissipation vibration damping subway segment |
| CN209066197U (en) * | 2018-08-21 | 2019-07-05 | 中铁建设集团有限公司 | A kind of bridge builds the shock absorption system of unification high-speed rail station support rail layer structural column |
| WO2021051706A1 (en) * | 2019-09-19 | 2021-03-25 | 中铁第四勘察设计院集团有限公司 | Vibration reduction section prefabricated ballastless track structure having longitudinal connecting structure, and assembly method |
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| Publication number | Publication date |
|---|---|
| CN114183165A (en) | 2022-03-15 |
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