CN114635314A - Connecting joint for prefabricated subway track bed - Google Patents
Connecting joint for prefabricated subway track bed Download PDFInfo
- Publication number
- CN114635314A CN114635314A CN202210231444.0A CN202210231444A CN114635314A CN 114635314 A CN114635314 A CN 114635314A CN 202210231444 A CN202210231444 A CN 202210231444A CN 114635314 A CN114635314 A CN 114635314A
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- joint
- prefabricated
- steel plate
- positioning steel
- bed
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2201/00—Fastening or restraining methods
- E01B2201/04—Fastening or restraining methods by bolting, nailing or the like
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention relates to a connecting joint for a prefabricated subway track bed, and belongs to the field of shield tunnel design. The prefabricated subway track bed connecting joint comprises a connecting joint part; the prefabricated subway track bed is formed by mutually splicing a plurality of prefabricated track beds; a connecting joint part is arranged at the expansion joint between every two adjacent prefabricated ballast beds; the adjacent two prefabricated track beds limit the prefabricated track beds to horizontally displace or vertically displace through the connecting joint parts. The invention provides a connecting joint for a prefabricated subway track bed, which is used for connecting the prefabricated track bed by utilizing a matched concave-convex joint, optimizing the stress of the track bed at an expansion joint while keeping the longitudinal expansion function of the track bed, and reducing the vertical and lateral displacement between adjacent track beds, thereby reducing the occurrence of unsmooth rail surface and ensuring the running safety of a subway train.
Description
Technical Field
The invention relates to a connecting joint for a prefabricated subway track bed, and belongs to the field of shield tunnel design.
Background
An integral track bed is adopted in a traditional subway shield tunnel. When in construction, the concrete is directly poured on the shield tunnel pipe sheet to form the ballast bed, and the construction speed is low. With the improvement of construction technology and design level, the prefabricated track bed is gradually applied to the construction of subway shield tunnels. In order to ensure the longitudinal telescopic type of the ballast bed structure, expansion joints are required to be arranged between adjacent ballast beds. The expansion joints, however, weaken the longitudinal integrity of the ballast bed structure to some extent. When the shield tunnel circumferential weld is staggered, the staggered amount is easy to react to the steel rail through the roadbed expansion joint, and the rail surface is not smooth, so that the running safety of the train is influenced. How to solve when keeping the expansion joint function, optimize expansion joint both sides railway roadbed atress, reduce the emergence of rail surface irregularity, become the trade and need urgently.
Disclosure of Invention
The invention relates to a connecting joint for a prefabricated subway track bed, which optimizes the stress of the track bed at an expansion joint while keeping the longitudinal expansion function of the track bed, and reduces the vertical and lateral displacement between adjacent track beds, thereby reducing the occurrence of unsmooth rail surface and ensuring the running safety of a subway train.
The invention adopts the following technical scheme:
the connecting joint for the prefabricated subway track bed comprises a connecting joint part; the prefabricated subway track bed is formed by mutually splicing a plurality of prefabricated track beds; a connecting joint part is arranged at the expansion joint between every two adjacent prefabricated ballast beds; and the adjacent two prefabricated track beds limit the prefabricated track beds to generate water level displacement or up-and-down displacement through the connecting joint parts.
The invention discloses a connecting joint for a prefabricated subway track bed, which comprises a connecting joint part and a connecting joint part, wherein the connecting joint part comprises: the device comprises a pre-buried bolt sleeve, a positioning steel plate, a concave joint and a convex joint; the embedded bolt sleeve is prefabricated on the side edge of the bed at the bottom of the prefabricated track bed; the positioning steel plates are mutually connected with the embedded bolt sleeves on the prefabricated track bed through connecting bolts, and the positioning steel plates on the adjacent prefabricated track beds are oppositely arranged; the oppositely arranged positioning steel plates are provided with a female joint and a male joint which are mutually matched and spliced.
The connecting joint for the prefabricated subway track bed further comprises a steel plate connecting bolt; the positioning steel plate is L-shaped; the bottom end face of the L-shaped positioning steel plate is provided with bolt through holes which are the same as the number of the embedded bolt sleeves and correspond to the positions of the embedded bolt sleeves; the positioning steel plate is tightly connected with the prefabricated track bed through a steel plate connecting bolt and an embedded bolt sleeve; each bolt through hole is provided with a bolt hand hole which is equal to the head part of the steel plate connecting bolt in height;
the top end of the vertical end plate of the L-shaped positioning steel plate is provided with a threaded hole; the side end of the L-shaped positioning steel plate is provided with a plurality of dovetail grooves which are vertically arranged.
This non-buy that prefabricated subway bed is with attach fitting, its characterized in that: a plurality of layers of concave shear plates which are arranged in parallel are arranged in the concave joint, and a plurality of lateral limiting grooves are formed in each layer of concave shear plate; the other end face of one side opposite to the concave shear plate is provided with a dovetail joint I matched with the dovetail groove in the positioning steel plate; a horizontally extending limiting ridge is arranged above the dovetail joint I in the concave joint, and a first through hole which is the same as the positioning steel plate threaded holes in number and corresponds in position is formed in the limiting ridge portion.
The invention relates to a connecting joint for a prefabricated subway track bed, which is characterized in that a plurality of layers of convex shear plates which are arranged in parallel are arranged in a convex joint, and a plurality of lateral limiting tenons of the convex shear plates are arranged on each layer of the convex shear plates; a dovetail joint II matched with the dovetail groove in the positioning steel plate is arranged on the other end face of one side opposite to the convex shear plate; and a horizontally extending limit ridge is arranged above the dovetail joint II in the convex shear plate, and the limit ridge part is provided with a through hole II which has the same quantity as the positioning steel plate threaded holes and corresponds to the positioning steel plate threaded holes in position.
According to the connecting joint for the prefabricated subway track bed, a gap is formed between the concave joint and the convex joint, and the width of the gap is the same as the width of an expansion joint between adjacent prefabricated track beds.
Advantageous effects
The invention provides a connecting joint for a prefabricated subway track bed, which is used for connecting the prefabricated track bed by utilizing a matched concave-convex joint, optimizing the stress of the track bed at an expansion joint while keeping the longitudinal expansion function of the track bed, and reducing the vertical and lateral displacement between adjacent track beds, thereby reducing the occurrence of unsmooth rail surface and ensuring the running safety of a subway train.
The invention provides a connecting joint for a prefabricated subway track bed, which is used for connecting the prefabricated track bed by utilizing a matched concave-convex joint aiming at the requirements of optimizing the structural stress of the track bed and ensuring the longitudinal integrity of the subway track bed, so that the track bed stress at an expansion joint is optimized while the expansion function of the track bed is kept, and the vertical and lateral displacement between adjacent track beds is reduced, thereby reducing the occurrence of unsmooth rail surface and ensuring the running safety of a subway train.
Drawings
FIG. 1 is a cross-sectional view of a prefabricated subway bed connector of the present invention;
FIG. 2 is a diagram illustrating the placement of the present invention in a prefabricated track bed;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is an exploded view of the structure of the present invention;
FIG. 5 is a schematic view of the structure of the positioning plate of the present invention;
FIG. 6 is a schematic view of the structure of the positive portion of the female connector of the present invention;
FIG. 7 is a schematic view of the back construction of the female fitting of the present invention;
FIG. 8 is a schematic view of the male connection portion of the present invention;
FIG. 9 is a schematic view of the back of the male connection end of the present invention.
In the figure 1, a track bed is prefabricated; 2. embedding a bolt sleeve; 31. a steel plate connecting bolt; 32. a connecting bolt; 4. positioning a steel plate; 41. a bolt through hole; 42. a bolt hand hole; 43. a dovetail groove; 44. a threaded hole; 5. a female connector; 51. a concave shear plate; 501. a lateral limiting groove; 52. a first through hole; 53. a dovetail joint I; 6. a male connector; 61. a convex shear plate; 601. a lateral limiting tenon; 62. a second through hole; 63. and a second dovetail joint.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1 to 9, the connecting joint for the prefabricated subway track bed comprises a prefabricated track bed 1, an embedded bolt sleeve 2, connecting bolts 3, a positioning steel plate 4, a concave joint 5 and a convex joint 6. Adjacent prefabricated ballast beds 1 are connected by the invention. And 5 embedded bolt sleeves 2 are embedded in the installation position of each joint of the prefabricated track bed 1. The concave shear plate 51 and the convex shear plate 61 are mutually meshed and bear the vertical shear force between adjacent track beds. The lateral limiting groove 501 is meshed with the lateral limiting tenon 601 to limit the transverse displacement between the adjacent prefabricated track beds.
The positioning steel plate 4 of the embodiment is tightly connected with the precast ballast bed 1 through the steel plate connecting bolt 31 and the embedded bolt sleeve 2. The bottom surface of the positioning steel plate 4 is provided with 5 bolt through holes 41 corresponding to the positions of the embedded bolt sleeves 2. Each bolt through hole 41 is provided with a bolt hand hole 42 having the same height as the head of the steel plate coupling bolt 31 for bolt mounting.
The side plate of the positioning steel plate 4 is also provided with 2 dovetail grooves 43 and 3 threaded holes 44 for positioning and connecting with the female connector 5 or the male connector 6.
The female joint 5 is provided with 3 layers of female shear plates 51, and the female shear plates 51 are provided with 2 lateral limiting grooves 501.
The side plate of the female connector 5 is provided with 5 through holes 52 corresponding to the positions of the threaded holes 44 of the positioning steel plate. And is provided with a first dovetail 53 arranged to cooperate with the dovetail groove 43.
The convex joint 6 is provided with 2 layers of convex shear plates 61, and 3 lateral limiting tenons 601 are arranged on the convex shear plates 61.
The side plate of the male joint 6 is provided with 3 through holes 62 corresponding to the positions of the threaded holes 44 of the positioning steel plate. And is provided with a second dovetail 63 which is matched with the dovetail groove 43.
In the installation state of the prefabricated subway track bed connecting joint, a gap (20 mm) with the same width of an expansion joint between adjacent prefabricated track beds 1 is arranged between the female joint 5 and the male joint 6. The concave shear plate 51 and the convex shear plate 61 are engaged with each other to bear the vertical shear force between the adjacent track beds. The lateral limiting groove 501 is meshed with the lateral limiting tenon 601 to limit the transverse displacement between the adjacent prefabricated track beds. When the annular seam of adjacent segments generates a 1cm vertical slab staggering, the rail surface at the position of the expansion joint of the track bed can generate a height irregularity of 1.35 mm. When the adjacent prefabricated track beds are connected by adopting the example, the unevenness of the rail surface is reduced to 0.67mm under the same staggering condition. After the invention is adopted, the stress of the track bed at the expansion joint can be optimized, and the vertical and lateral displacement between the adjacent track beds is reduced, thereby reducing the occurrence of unsmooth rail surface and ensuring the running safety of the subway train.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. Prefabricated coupling joint for subway track bed, its characterized in that: comprises a connecting joint part; the prefabricated subway track bed is formed by mutually splicing a plurality of prefabricated track beds (1); a connecting joint part is arranged at the expansion joint between every two adjacent prefabricated track beds (1); the two adjacent prefabricated track beds (1) limit the prefabricated track beds (1) to generate water level displacement or up-and-down displacement through the connecting joint parts.
2. The prefabricated subway bed connection joint as claimed in claim 1, wherein: the connection joint part comprises: the embedded bolt type steel plate positioning device comprises an embedded bolt sleeve (2), a positioning steel plate (4), a concave joint (5) and a convex joint (6); the embedded bolt sleeve (2) is prefabricated on the side edge of a bed at the bottom of the prefabricated track bed (1); the positioning steel plates (4) are mutually connected with the embedded bolt sleeves (2) on the prefabricated track beds (1) through connecting bolts, and the positioning steel plates (4) on the adjacent prefabricated track beds (1) are oppositely arranged; the oppositely arranged positioning steel plates (4) are provided with a female joint (5) and a male joint (6) which are mutually matched and spliced.
3. The prefabricated subway bed connection joint as claimed in claim 2, wherein: the steel plate connecting bolt (31) is also included; the positioning steel plate (4) is L-shaped; the bottom end face of the L-shaped positioning steel plate (4) is provided with bolt through holes (41) which are the same as the embedded bolt sleeves (2) in number and correspond to the embedded bolt sleeves in position; the positioning steel plate (4) is fixedly connected with the prefabricated track bed (1) through a steel plate connecting bolt (31) and an embedded bolt sleeve (2); each bolt through hole (41) is provided with a bolt hand hole (42) with the same height as the head of the steel plate connecting bolt (31);
the top end of the vertical end plate of the L-shaped positioning steel plate (4) is provided with a threaded hole (44); the side end of the L-shaped positioning steel plate (4) is provided with a plurality of dovetail grooves (43) which are vertically arranged.
4. The prefabricated subway track bed connecting joint as claimed in claim 2 or 3, wherein: a plurality of layers of concave shear plates (51) which are arranged in parallel are arranged in the concave joint (5), and a plurality of lateral limiting grooves (501) are arranged on each layer of concave shear plate (51); a dovetail joint I (53) matched with the dovetail groove (43) in the positioning steel plate (4) is arranged on the other end face of one side opposite to the concave shear plate (51); and a horizontally extending limiting bank is arranged above the dovetail joint I (53) in the concave joint (5), and the limiting bank part is provided with through holes I (52) which have the same number as the positioning steel plate threaded holes (44) and correspond to the positioning steel plate threaded holes in position.
5. The prefabricated subway bed connection joint as claimed in claim 2 or 3, wherein: a plurality of layers of convex shear plates (61) which are arranged in parallel are arranged in the convex joint (6), and a plurality of lateral limiting tenons (601) of the convex shear plates (61) are arranged on each layer of the convex shear plates (61); a second dovetail joint (63) matched with the dovetail groove (43) in the positioning steel plate (4) is arranged on the other end face of one side opposite to the convex shear plate (61); and a horizontally extending limit ridge is arranged above the dovetail joint II (63) in the convex shear plate (61), and the limit ridge part is provided with through holes II (62) which have the same number as the positioning steel plate threaded holes (44) and correspond to the positioning steel plate threaded holes in position.
6. The prefabricated subway bed connection joint as claimed in claim 1 or 2, wherein: and a gap is arranged between the concave joint (5) and the convex joint (6), and the width of the gap is the same as the width of the expansion joint between the adjacent prefabricated track beds (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231444.0A CN114635314A (en) | 2022-03-10 | 2022-03-10 | Connecting joint for prefabricated subway track bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231444.0A CN114635314A (en) | 2022-03-10 | 2022-03-10 | Connecting joint for prefabricated subway track bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114635314A true CN114635314A (en) | 2022-06-17 |
Family
ID=81947033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210231444.0A Pending CN114635314A (en) | 2022-03-10 | 2022-03-10 | Connecting joint for prefabricated subway track bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116145481A (en) * | 2023-02-23 | 2023-05-23 | 中国水利水电第六工程局有限公司 | Arc track slab reinforcement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012750A (en) * | 2007-02-12 | 2007-08-08 | 上海市隧道工程轨道交通设计研究院 | Combined jointing method of lining gilled tube and inner lining for shield tunnel |
| CN103741560A (en) * | 2013-12-31 | 2014-04-23 | 北京九州一轨隔振技术有限公司 | Shear hinge and track structure |
| CN203891211U (en) * | 2014-04-04 | 2014-10-22 | 北京城建设计发展集团股份有限公司 | Mortise grouting type connector of prefabricated structure |
| DE202015103972U1 (en) * | 2015-07-16 | 2016-10-19 | WOCO IPS GmbH | Mounting plate with latching hook |
| CN109112902A (en) * | 2018-09-14 | 2019-01-01 | 同济大学 | A kind of preformed rubber is concrete road bed |
| CN213951776U (en) * | 2020-09-01 | 2021-08-13 | 重庆单轨交通工程有限责任公司 | Forward free prefabricated integral ballast bed |
-
2022
- 2022-03-10 CN CN202210231444.0A patent/CN114635314A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012750A (en) * | 2007-02-12 | 2007-08-08 | 上海市隧道工程轨道交通设计研究院 | Combined jointing method of lining gilled tube and inner lining for shield tunnel |
| CN103741560A (en) * | 2013-12-31 | 2014-04-23 | 北京九州一轨隔振技术有限公司 | Shear hinge and track structure |
| CN203891211U (en) * | 2014-04-04 | 2014-10-22 | 北京城建设计发展集团股份有限公司 | Mortise grouting type connector of prefabricated structure |
| DE202015103972U1 (en) * | 2015-07-16 | 2016-10-19 | WOCO IPS GmbH | Mounting plate with latching hook |
| CN109112902A (en) * | 2018-09-14 | 2019-01-01 | 同济大学 | A kind of preformed rubber is concrete road bed |
| CN213951776U (en) * | 2020-09-01 | 2021-08-13 | 重庆单轨交通工程有限责任公司 | Forward free prefabricated integral ballast bed |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116145481A (en) * | 2023-02-23 | 2023-05-23 | 中国水利水电第六工程局有限公司 | Arc track slab reinforcement |
| CN116145481B (en) * | 2023-02-23 | 2024-06-04 | 中国水利水电第六工程局有限公司 | Arc track slab reinforcement |
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