CN110761119A - Cold-pressed longitudinal-connection-containing assembly type ballastless track structure of vibration reduction section and assembly method - Google Patents
Cold-pressed longitudinal-connection-containing assembly type ballastless track structure of vibration reduction section and assembly method Download PDFInfo
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- CN110761119A CN110761119A CN201910884758.9A CN201910884758A CN110761119A CN 110761119 A CN110761119 A CN 110761119A CN 201910884758 A CN201910884758 A CN 201910884758A CN 110761119 A CN110761119 A CN 110761119A
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- 238000000034 method Methods 0.000 title claims description 19
- 230000009467 reduction Effects 0.000 title description 8
- 241001669679 Eleotris Species 0.000 claims abstract description 188
- 230000000670 limiting effect Effects 0.000 claims abstract description 177
- 238000013016 damping Methods 0.000 claims abstract description 30
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 107
- 239000010959 steel Substances 0.000 claims description 107
- 238000000641 cold extrusion Methods 0.000 claims description 22
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 18
- 238000011065 in-situ storage Methods 0.000 claims description 10
- 230000005489 elastic deformation Effects 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 230000002829 reductive effect Effects 0.000 abstract description 8
- 125000006850 spacer group Chemical group 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 18
- 239000004567 concrete Substances 0.000 description 8
- 230000003139 buffering effect Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011376 self-consolidating concrete Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- 238000005457 optimization Methods 0.000 description 2
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- 239000000945 filler Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
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- 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
- E01B1/008—Drainage of track
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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Abstract
The invention discloses an assembly type sleeper plate or track plate type ballastless track structure containing a cold-pressing longitudinal connecting structure for a vibration damping section, which comprises a plurality of prefabricated sleeper plates or prefabricated track plates, a cast-in-place layer, a vibration damping layer, a track lower part foundation, a connecting and filling part and a cold-pressing longitudinal connecting structure, wherein the prefabricated sleeper plates or the prefabricated track plates are longitudinally arranged at intervals, and the transverse two ends of each prefabricated sleeper plate or the prefabricated track plate in a spacing area are respectively assembled and connected with each other through the longitudinal connecting structure; in part or all of the spacer areas, a reinforced concrete structure is adopted as a connecting filling part. The connecting and filling part and the prefabricated sleeper plate or the prefabricated track plate form an assembled integral structure, the prefabricated sleeper plate or the prefabricated track plate forms a same stressed long plate unit structure body, and the assembling, connecting, limiting and damping effects are realized; the precision of the working time of on-site paving facilities can be improved, the disassembly and the assembly are convenient, the construction difficulty is reduced, and the construction speed is improved.
Description
Technical Field
The invention belongs to the technical field of ballastless tracks, and particularly relates to an assembly type sleeper plate or track plate ballastless track structure containing a cold-pressed longitudinal connecting structure for a vibration damping section and an assembly method.
Background
The ballastless track is a track structure which adopts integral foundations such as concrete, asphalt mixture and the like to replace a loose gravel track bed. Compared with a ballast track, the ballastless track avoids the splashing of the ballast, has good smoothness, good stability, long service life, good durability and less maintenance work, and is applied more and more. The slab ballastless track structure mainly relates to structures such as a track slab, an asphalt mortar or self-compacting concrete filling layer, a base or a supporting layer and the like, wherein the base or the supporting layer adopts a concrete structure, and the asphalt mortar or the self-compacting concrete filling layer laid on the base or the supporting layer is a structural layer for adjusting and supporting the force transmission of the ballastless track structure.
At present, the types of plate-type ballastless tracks in China mainly comprise CRTS I type plate type, CRTS II type plate type and CRTS III type plate-type ballastless tracks. The CRTS I type plate ballastless track is a unit plate, is not longitudinally connected with plates, is not provided with a transverse stop block, is laid on a cast-in-place reinforced concrete base with a convex block platform, and is limited by the convex block platform. In the unit plate type ballastless track structure, each track plate after being laid and installed is independent, and the defects that the track plates and the asphalt mortar filling layer can be peeled off after the track runs for a period of time, the longitudinal end parts of the track plates are easy to warp, and the adverse effects on the running stability and comfort of a train and the service life of the track structure are undoubtedly caused. Although the existing scheme for improving the connection mode exists, the problems of stress deformation between plate bodies and complex preparation process are still difficult to meet, and the problems of difficult assembly and maintenance of the whole ballastless track caused by excessive ballastless track special-shaped plates cannot be solved.
The CRTS II type plate type ballastless track plate adopts a longitudinal connection mode, the ballastless track plate is longitudinally connected with the plate, a longitudinal connection structure is formed by a longitudinal fine-rolled thread steel bar and a tensioning locking piece, and a transverse stop block is arranged, so that partial defects of a CRTS I type plate type ballastless track can be overcome. For example, patent document 201695285U discloses a tension lock for longitudinal connection of ballastless track slabs, which is used for longitudinal connection by connecting and locking reinforcing steel bars longitudinally extending from the track slabs. However, this type of connection is substantially equivalent to the way of longitudinal prestressing of the steel bars, the construction of the connection is complex and cumbersome, and the rigid connection still presents the possibility of arching of the track slabs in the case of excessive temperature forces, which adversely affects the life of the track structure and the smoothness and comfort of the train operation.
Patent document CN204370701U discloses a mechanical connecting device for reinforcing bars in a fabricated concrete building structure, which is used for connecting reinforcing bars by upsetting the ends of the reinforcing bars to be connected, and inserting reinforcing bar sleeves into the ends, so as to connect the reinforcing bars by using the connecting sleeves and connecting bolts. However, the connection mode is complex in structure and complex in construction, the gap reserved between the clamp ring arranged on the steel bar sleeve and the steel bar to be connected can also cause that the adjacent assembly type sleeper slab or track slab is not on the same plane, and the precision is difficult to control during construction.
Disclosure of Invention
The invention provides an assembled sleeper slab ballastless track structure containing a cold-pressing longitudinal connecting structure and an assembling method for a vibration damping section, aiming at least one of the defects or the improvement requirements in the prior art, a plurality of prefabricated short sleeper slabs are arranged at intervals and are assembled and connected through the longitudinal connecting structure and a connecting and filling part to form a long sleeper slab, a spacing area is provided with a limiting steel bar and a limiting sleeve, one of the limiting steel bar and the limiting sleeve is fixed with the connecting and filling part, the other limiting steel bar and the limiting sleeve are fixed with a base at the lower part of a track to form a sliding structure of the limiting steel bar and the limiting sleeve, the connecting and filling part is convenient to move up and down, the vibration of a vehicle is buffered when the longitudinal and transverse limiting is started, the connecting and filling part realizes the limiting at the same time, and the working procedure is. Moreover, the cold-pressing longitudinal connecting structure can improve the working time precision of on-site paving facilities, is convenient to disassemble and assemble, reduces the construction difficulty, improves the on-site construction speed, has a simple structure, and is convenient for positioning the sleeper slab or the track slab.
In order to achieve the above object, according to one aspect of the present invention, there is provided an assembly type sleeper slab or track slab ballastless track structure including a cold-pressed longitudinal connection structure for a vibration-damping zone, including a prefabricated sleeper slab or prefabricated track slab, a cast-in-place layer, a vibration-damping layer, a track lower foundation and connection filling portions, and a longitudinal connection structure of the prefabricated sleeper slab or the prefabricated track slab;
the prefabricated sleeper plates or the prefabricated track plates are longitudinally arranged at intervals, and the transverse ends of the prefabricated sleeper plates or the prefabricated track plates in the interval area are respectively assembled and connected with each other through a longitudinal connecting structure; in part or all of the interval areas, a reinforced concrete structure is adopted as a connecting and filling part, so that the connecting and filling part and the prefabricated sleeper slab or the prefabricated track slab form an assembled integral structure, and the prefabricated sleeper slab or the prefabricated track slab forms a same stressed long slab unit structure body;
the longitudinal connecting structure comprises longitudinal steel bars and a cold extrusion sleeve; longitudinal steel bars are pre-embedded in two adjacent prefabricated sleeper plates or prefabricated track plates, extend out of the end faces and are arranged at intervals with the other matched longitudinal steel bar, and the two longitudinal steel bars are longitudinally connected through a cold extrusion sleeve;
the internal diameter of the cold extrusion sleeve is larger than the external diameter of the longitudinal steel bars, the butt joint ends of the two longitudinal steel bars are respectively inserted into the two ends of the cold extrusion sleeve, and the cold extrusion sleeve is deformed and locked under the extrusion of the portable extruder.
Furthermore, connecting and filling parts are respectively arranged at the two transverse ends of at least part of the interval area, and protruding limiting steel bars are arranged on the upper surface of the track lower foundation of at least part of the interval area; the longitudinal connecting structure, the limiting steel bars and the limiting sleeves are all coated in the same connecting and filling part, and the longitudinal connecting structure, the limiting steel bars and the limiting sleeves are integrally formed to realize simultaneous limiting and connection, so that a plurality of prefabricated sleeper plates or prefabricated track plates are assembled to form a track unit with a preset length and form a same stressed structure body;
alternatively, the first and second electrodes may be,
the transverse two ends of at least part of the interval area are respectively provided with a connecting filling part, and the upper surface of the lower part foundation of the track of at least part of the interval area is provided with a protruding limiting sleeve; and in the interval area that is provided with connection filling part and stop component simultaneously, connect the filling part and bury limiting steel bar underground, limiting sleeve's outer wall with connect the filling part contactless, limiting steel bar slidable sets up in limiting sleeve, vertical connection structure, limiting steel bar, limiting sleeve all is cladded in same connect the filling part, four integrated into one piece realize spacing and connection simultaneously to a plurality of prefabricated sleeper slab or prefabricated track board assemble the track unit that forms predetermined length and form same atress structure.
Further, the prefabricated sleeper slab or the prefabricated track slab comprises a plurality of pairs of fastener rail bearing platforms, preferably 2-10 pairs, and more preferably 4-6 pairs.
Furthermore, gaps are arranged at the two longitudinal ends of the prefabricated sleeper slab or the prefabricated track slab, and cover plates are arranged on the gaps to form a smooth evacuation channel.
Further, the rail lower part foundation is provided with a drainage ditch along the longitudinal direction.
Furthermore, drainage ditches are arranged on the two transverse sides of the prefabricated sleeper plate or the prefabricated track plate.
Furthermore, first limiting structures are arranged on two sides of the long plate unit, or second limiting structures are arranged in the plate.
Further, plate gaps are arranged among a plurality of adjacent track units, and a third limiting structure is arranged in part or all of the plate gaps.
As another aspect of the present invention, there is provided an assembling method of an assembled sleeper slab or track slab ballastless track structure including a cold-pressed longitudinal connection structure for a vibration-damped section, comprising the steps of:
s1: carrying prefabricated sleeper plates or prefabricated track plates manufactured in a factory to a construction site, and carrying out primary adjustment and positioning after a preset number of the prefabricated sleeper plates or the prefabricated track plates are longitudinally arranged along a line;
s2: connecting the prefabricated sleeper plates or the longitudinal steel bars pre-embedded in the prefabricated track plates together through a plurality of cold extrusion sleeves for fine adjustment and positioning;
s3: arranging a plurality of limiting reinforcing steel bars on the basis of the lower part of the track of part or all of the spacing areas, sleeving the limiting reinforcing steel bars with limiting sleeves, respectively pouring reinforced concrete on the transverse two ends of the spacing areas in the spacing areas which are simultaneously provided with the longitudinal connecting structures and the limiting members in situ, and wrapping and covering the longitudinal connecting structures, the limiting reinforcing steel bars and the limiting sleeves; after curing, forming the connecting and filling part, and integrally forming the connecting and filling part and the connecting and filling part to realize simultaneous limiting and connecting; respectively pouring reinforced concrete on the transverse two ends of the interval area which is partially or completely not provided with the limiting reinforcing steel bars in situ, and wrapping and covering the longitudinal connecting structure; the method comprises the steps of simultaneously finishing integration, transverse/longitudinal limiting and vertical elastic deformation through one-time cast-in-place, so that a plurality of prefabricated sleeper plates or prefabricated track plates are assembled to form track units with preset lengths and form a same stressed structure body;
alternatively, the first and second electrodes may be,
arranging a plurality of limiting sleeves on the basis of the lower part of the track of a part or all of the spacing areas, placing limiting reinforcing steel bars in the limiting sleeves, arranging protection outside the limiting sleeves, respectively pouring reinforced concrete on site at the two transverse ends of the spacing areas in the spacing areas which are simultaneously provided with the longitudinal connecting structures and the limiting members, and wrapping and covering the longitudinal connecting structures, the limiting reinforcing steel bars and the limiting sleeves; after curing, forming the connecting and filling part, and integrally forming the connecting and filling part and the connecting and filling part to realize simultaneous limiting and connecting; respectively pouring reinforced concrete on the horizontal two ends of the spacing area which is partially or completely not provided with the limiting sleeve in situ, and wrapping and covering the longitudinal connecting structure; and the integration, the transverse/longitudinal limiting and the vertical elastic deformation are simultaneously completed through one-time cast-in-place, so that a plurality of prefabricated sleeper plates or prefabricated track plates are assembled to form a track unit with a preset length and form a same stressed structure body.
The above-mentioned further improvement features can be combined with each other as long as they do not conflict with each other.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
(1) the longitudinal connecting structure of the assembled sleeper plate type or track plate type ballastless track structure for the vibration damping section is simple in connecting structure, only comprises the cold extrusion sleeve and the exposed reinforcing steel bars, adjacent sleeper plates or track plates are on the same horizontal plane and are connected through the adjacent exposed reinforcing steel bars, the longitudinal and transverse horizontal positioning of the track panel structure can be completed, and the sleeper plates or the track plates are prefabricated through vertical molds.
(2) The longitudinal connecting structure of the assembled sleeper plate type or track plate type ballastless track structure for the vibration damping section is simple and convenient in manufacturing method, adjacent sleeper plates or track plates are connected in advance through the cold extrusion sleeve, the assembling precision is improved, the production cost is reduced, and the requirement for quickly and efficiently producing the precast slabs is met.
(3) According to the longitudinal connecting structure of the assembled sleeper plate type or track plate type ballastless track structure for the vibration damping section, the sleeper plate or track plate is ensured to be on the same horizontal plane by only laying the prefabricated sleeper plate or track plate in place, installing the cold extrusion sleeve and pouring the filling material at one time in site construction, and the site construction speed is high.
(4) According to the assembled ballastless track structure for the vibration damping section, the prefabricated sleeper plates or the prefabricated track plates which can be correspondingly assembled and connected are arranged at intervals along the track direction on the basis of the lower portion of the track, the longitudinal connecting structures are correspondingly arranged between the two adjacent prefabricated sleeper plates or the adjacent prefabricated track plates to be correspondingly matched and connected, concrete is poured in the connecting areas, the prefabricated sleeper plates or the prefabricated track plates form an assembled integral structure, the prefabricated sleeper plates or the prefabricated track plates are effectively connected, a long plate unit structural body with the same stress is formed, the integrity of the connection and the assembly of the prefabricated sleeper plates or the prefabricated track plates is guaranteed, and the assembly precision and the reliability of the ballastless track structure are improved.
(5) The assembled ballastless track structure for the vibration reduction section is characterized in that a plurality of prefabricated short sleeper plates are arranged at intervals and are assembled and connected through a longitudinal connecting structure and a connecting and filling part to form a long sleeper plate, a spacing area is provided with a limiting steel bar and a limiting sleeve, one of the limiting steel bar and the limiting sleeve is fixed with the connecting and filling part, the other one of the limiting steel bar and the limiting sleeve is fixed with a lower part foundation of a track to form a sliding structure of the limiting steel bar and the limiting sleeve, the connecting and filling part can conveniently move up and down, vibration of a vehicle can be buffered when the longitudinal and transverse limiting is achieved, the connecting and filling part can achieve connection and limiting, and the working procedure is less in labor and convenient to implement.
(6) The invention discloses an assembly type ballastless track structure for a vibration damping section, which comprises longitudinal steel bars and sleeves, wherein the longitudinal steel bars are embedded in a prefabricated sleeper slab at intervals and are connected with another longitudinal steel bar through the sleeves, or the sleeves are embedded in the prefabricated sleeper slab, two ends of one longitudinal steel bar are respectively connected with the two sleeves, and the connection between the two adjacent prefabricated sleeper slabs is realized through the flexible arrangement of the steel bars and the sleeves.
(7) The assembled ballastless track structure for the vibration damping zone is formed by correspondingly assembling a plurality of prefabricated sleeper plates, is of an assembled structure as a whole, and once a track defect occurs in the later application process of the ballastless track structure, a post-cast area at the defect position of the track structure can be correspondingly broken to unlock the prefabricated sleeper plates at the position, so that the prefabricated sleeper plates or track units at the defect position can be replaced or adjusted, and the maintenance time and the maintenance cost of a ballastless track are obviously reduced;
(8) according to the assembled rail ballastless track structure for the vibration damping section, the prefabricated sleeper slabs with certain length are arranged and assembled into track units, the sleeper slabs with different length specifications can be adopted according to different use areas, and the prefabricated sleeper slabs are set as short slabs, so that the curve adaptability of the prefabricated sleeper slabs can be further improved, the types and the number of non-standard slabs and curve slabs are reduced, the prefabrication cost of the sleeper slabs is reduced, the economical efficiency of the ballastless track structure is improved, and the later laying fine adjustment is facilitated;
(9) the invention relates to an assembling method of an assembled ballastless track structure for a vibration damping section, which is characterized in that firstly, sleeper plates are manufactured into short plates in a factory, then the short plates are transported to a construction site, the sleeper plates are connected through a longitudinal connecting structure, and two adjacent short plates are fixedly connected through a connecting and filling part, so that the short sleeper plates are assembled into a long sleeper plate, before the filling part is connected through pouring, a limiting steel bar or a limiting sleeve is fixed on the lower part of a track, the corresponding pouring and connecting filling part is fixedly connected with the limiting sleeve or fixedly connected with the limiting steel bar, and the limiting steel bar is movably connected with the limiting sleeve, so that the longitudinal and transverse fixing and the buffering effects on the sleeper plates are realized, and the assembling method is simple and has stable assembling structure.
Drawings
FIG. 1 is a schematic diagram of a fabricated sleeper slab ballastless track structure for a vibration damping zone according to an embodiment of the invention;
FIG. 2 is an explosion diagram of an assembled sleeper slab ballastless track structure for a vibration damping zone according to an embodiment of the invention;
FIG. 3 is a transverse cross-sectional view and a structure of a fabricated sleeper slab ballastless track for a vibration damping zone according to an embodiment of the invention;
FIG. 4 is a schematic structural view of a first embodiment of a stop member;
FIG. 5 is a schematic structural view of a second embodiment of a stop member;
FIG. 6 is a schematic structural view of a third embodiment of a stop member;
fig. 7 is a schematic structural view of a fourth embodiment of a stop member.
FIG. 8 is a longitudinal cross-sectional view at the longitudinal attachment structure;
FIG. 9 is a top plan view of the longitudinal attachment structure;
FIG. 10 is a partial schematic view of a longitudinal joint;
the same reference numbers will be used throughout the drawings to refer to the same or like structures or parts, wherein: the track sleeper slab comprises 1-a prefabricated track sleeper slab, 101-a slab body, 102-longitudinal steel bars, 104-a cold extrusion sleeve, 1041-an extrusion rib, 2-a cast-in-place layer, 3-a track lower foundation, 301-a drainage ditch, 4-a limiting member, 401-limiting steel bars, 402-a connecting and filling part, 403-a limiting sleeve, 404-an isolating sleeve, 5-steel rails and 6-a vibration reduction layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The overall structural schematic diagram of the assembled sleeper slab type or track slab type ballastless track structure in the preferred embodiment of the invention is shown in fig. 1 and fig. 2, wherein the ballastless track structure is formed by correspondingly connecting and assembling prefabricated sleeper slabs or prefabricated track slabs which are sequentially arranged at intervals along the longitudinal direction, in the following preferred embodiment of the invention, the prefabricated sleeper slabs 1 are preferably taken as an example for illustration, and of course, the prefabricated track slabs can also be correspondingly connected and assembled in the following preferred embodiment to form the ballastless track structure.
In the preferred embodiment of the invention, the ballastless track structure comprises a prefabricated sleeper slab 1, a cast-in-place layer 2 and a track lower foundation 3 which are sequentially matched and arranged; more specifically, the track lower foundation 3 in the preferred embodiment is disposed along the track direction, and may further preferably be a concrete foundation or foundation backfill layer formed by pouring cement concrete, for bearing the prefabricated tie plate 1 and the steel rail 5 disposed on the tie plate 1, and the train running on the steel rail 5; in the preferred embodiment, the width and thickness of the lower rail foundation 3 are not specifically limited, and can be preferred according to actual needs, so that the details are not repeated herein; further preferably, as shown in fig. 3, a drainage ditch 301 is correspondingly arranged on the track lower base 3, and accumulated water in the track is eliminated and reduced, the drainage ditch 301 in the preferred embodiment may be further preferably arranged along the track direction, and is preferably arranged in the middle of the track lower base 3; of course, the drainage ditch 301 may also be preferably arranged in two sides of the rail lower part foundation 3 side by side, or arranged on any side of the rail lower part foundation 3, which may be preferred according to actual needs, and will not be described herein.
Further, the cast-in-place layer 2 in the preferred embodiment is arranged between the prefabricated sleeper slab 1 and the track lower foundation 3, and can be obtained by placing the prefabricated sleeper slab 1 on the track lower foundation 3 and pouring after corresponding connection, rough adjustment and fine adjustment, so that the prefabricated sleeper slab 1 and the track lower foundation 3 are tightly attached to bear the vertical force transmitted on the prefabricated sleeper slab 1, the effects of buffering stress and uniform stress are achieved, the adjustment of the prefabricated sleeper slab 1 in the construction process can be fully realized by the cast-in-place layer 2, the levelness or the flatness of each position track in the ballastless track is ensured, and the running smoothness of the track is ensured; in the preferred embodiment, after the prefabricated sleeper plates 1 are correspondingly placed on the track lower foundation 3, the distance between each prefabricated sleeper plate 1 and the track lower foundation 3 is adjusted, so that the steel rails 5 arranged on each prefabricated sleeper plate 1 can be correspondingly connected, and the corresponding splicing precision of the track is ensured; further specifically, in a preferred embodiment, after the prefabricated sleeper slab 1 is arranged on the track lower foundation 3, a certain distance is reserved between the prefabricated sleeper slab 1 and the track lower foundation 3, then rough adjustment and fine adjustment are performed on the prefabricated sleeper slab 1, and concrete with a corresponding thickness is poured in a space reserved between the prefabricated sleeper slab 1 and the track lower foundation, so that a cast-in-place layer 2 of the ballastless track structure is formed.
Further preferably, in order to improve the connection reliability between the cast-in-place layer 2 and the precast sleeper slab 1 and the track lower foundation 3, in a preferred embodiment, the lower surface of the precast sleeper slab 1 and/or the upper surface of the track lower foundation 3 are/is subjected to roughening treatment, that is, the roughness of the lower surface of the precast sleeper slab 1 and/or the roughness of the upper surface of the track lower foundation 3 are/is increased, the flatness is reduced, the static friction force of the cast-in-place layer 2 connected with the precast sleeper slab 1 and the track lower foundation 3 is increased, the connection stability of the cast-in-place layer 2 with the precast sleeper slab 1 and the track lower foundation 3 is further improved, the precast sleeper slab 1 and the track lower foundation 3 form the same track structure stress body through the cast-in-place layer 2, and the stress stability of the ballastless track structure is further improved.
Further, the precast sleeper slab 1 in the preferred embodiment is as shown in fig. 1-2, and is a slab-shaped structure, and the precast sleeper slab 1 is preferably a non-prestressed slab, and of course, it may also be provided in the form of a prestressed slab, which may be implemented by using related technical means in the prior art according to actual needs; furthermore, a plurality of prefabricated sleeper plates 1 can be sequentially arranged on a lower foundation 3 of the track at intervals along the track direction and correspondingly connected in series to form an integral ballastless track structure, and two adjacent prefabricated sleeper plates 1 are aligned in side face and then connected in a matching manner; further, a plurality of pairs of fastener rail bearing platforms capable of correspondingly mounting the steel rail 5 are arranged at the top of the prefabricated sleeper slab 1 at intervals along the rail direction in the preferred embodiment, the number of the fastener rail bearing platforms arranged at intervals on the prefabricated sleeper slab 1 in the preferred embodiment is 4, of course, the number of the fastener rail bearing platforms arranged on the prefabricated sleeper slab 1 may be optimized according to the length of the prefabricated sleeper slab 1 or the interval between two adjacent fastener rail bearing platforms, for example, 2 pairs, 3 pairs, 5 pairs, 6 pairs, 7 pairs, 8 pairs, 9 pairs, 10 pairs, and further, 4 to 6 pairs may be specifically optimized.
Further, a longitudinal connecting structure is arranged between two adjacent prefabricated sleeper plates 1 in the preferred embodiment, which may be further specifically longitudinal steel bars 102 respectively arranged on the side surfaces of the two prefabricated sleeper plates 1 in the preferred embodiment, which may be correspondingly connected, the longitudinal steel bars 102 are arranged along the length direction of the prefabricated sleeper plates 1, that is, along the track direction of the ballastless track structure, and the longitudinal steel bars 102 are arranged on the side surfaces of the prefabricated sleeper plates 1 at intervals in the preferred embodiment, and then after the two prefabricated sleeper plates 1 are aligned, the longitudinal steel bars 102 on the opposite side surfaces of the two prefabricated sleeper plates 1 may be respectively aligned, and then the corresponding connection is realized; further preferably, in the preferred embodiment, sleeves are provided corresponding to the two aligned longitudinal steel bars 102, one end of each sleeve can be correspondingly connected to one longitudinal steel bar 102 on the side surface of one of the prefabricated sleeper slabs 1, and the other end of each sleeve can be correspondingly connected to the corresponding longitudinal steel bar 102 on the side surface of the other prefabricated sleeper slab 1, so that the two prefabricated sleeper slabs 1 can be correspondingly connected through the sleeves.
As shown in fig. 8, 9 and 10, it is further preferable that longitudinal steel bars 102 are embedded in two adjacent precast sleeper slabs 1 in the preferred embodiment and extend out of the end face, and are arranged at intervals with another matched longitudinal steel bar 102, and the two longitudinal steel bars 102 are longitudinally connected through a cold extrusion sleeve 104; the internal diameter of the cold extrusion sleeve 104 is greater than the external diameter of the longitudinal steel bars 102, the butt ends of the two longitudinal steel bars 102 are respectively inserted into the two ends of the cold extrusion sleeve 104, and under the extrusion of the portable extruder, the cold extrusion sleeve 104 is deformed and locked, and a plurality of extrusion ribs 1041 are formed outside. Preferably, the portion of the butt end of the longitudinal rebar 102 inserted into the cold extrusion sleeve 104 includes at least three turns of threads to ensure the locking force.
Of course, the connection of the longitudinal steel bars 102 is not limited to the above form, and it is also possible to realize the longitudinal connection of the two precast sleeper slabs 1 by providing overlapping joints corresponding to the longitudinal steel bars 102 and welding the two longitudinal steel bars 102 at the two ends of the overlapping joints respectively; moreover, the longitudinal connecting structure is not limited to the form of arranging the longitudinal reinforcing bars 102, and may be preferably in another form according to actual needs, for example, in another preferred embodiment, connecting plates are respectively arranged on the side surfaces of the two prefabricated sleeper plates 1, and then longitudinal bolts are correspondingly arranged to correspondingly connect the two prefabricated sleeper plates 1, so as to realize the longitudinal connection of the prefabricated sleeper plates 1; in still another preferred embodiment, the prefabricated sleeper slab 1 is assembled and connected by pre-burying structures, such as pre-buried steel plates, pre-buried iron pieces and the like, at the slab end of the prefabricated sleeper slab 1 and forming firm and reliable connection in a later period through bolting, welding, hinging or the like.
Further, the side surface of the prefabricated sleeper slab 1 in the preferred embodiment for connection is provided with a plurality of longitudinal steel bars 102, which are respectively arranged at two ends of the side surface, and the number of the longitudinal steel bars 102 respectively arranged at two ends of the side surface in the preferred embodiment is 4, that is, the number of the longitudinal steel bars 102 arranged on the connecting end surface of the prefabricated sleeper slab 1 is 8, then the two prefabricated sleeper slabs 1 can be correspondingly connected through 8 sleeves after being aligned, and the longitudinal steel bars 102 and the sleeves correspondingly form a longitudinal connecting structure in the preferred embodiment, so that the longitudinal connection of the prefabricated sleeper slabs 1 is realized, and then an integral unit along the track direction is formed; of course, the longitudinal reinforcements 102 between the two prefabricated sleeper slabs 1 may be all correspondingly matched and connected by sleeves, or may be partially correspondingly connected by sleeves.
Further, by the corresponding connection of the longitudinal connection structures, a plurality of prefabricated sleeper plates 1 can be correspondingly connected into long plate units with a certain length along the longitudinal direction, and then the ballastless track structure in the preferred embodiment can be formed by correspondingly combining one or more long plate units; further, the long slab unit in the preferred embodiment can form an integral stress structure through the cast-in-place layer 2 and the track lower foundation 3, that is, a track unit is formed, then the ballastless track structure can be formed by correspondingly assembling a plurality of track units arranged along the longitudinal direction, and each track unit is respectively used as the integral stress structure to complete the stress of the ballastless track structure.
Further, in a preferred embodiment, a plate seam is provided between each long plate unit, and a limiting structure is correspondingly provided in the plate seam to correspondingly limit the long plate units, the limiting structure may further be a boss, a cylindrical member, or the like, the limiting structure may be selectively provided, or may be provided in each plate seam, which may be preferred according to actual conditions, and is not described herein.
Of course, the position limitation of the long plate unit is not limited to the arrangement of the above-mentioned position limitation structure, and it can be arranged in other forms according to actual needs, for example, in a preferred embodiment, the position limitation structures are respectively arranged on both sides of the long plate unit, and the position limitation of the long plate unit is realized by the position limitation structures on the side edges of the long plate unit corresponding to the lower foundation of the connecting track, and the position limitation structures can be further preferably vertically arranged on the anchoring steel bars or connecting bosses on the side surfaces of the precast sleeper slab 1; correspondingly, in another preferred embodiment, the through hole structure can be vertically arranged on the plate surface of the partial or all prefabricated sleeper plates 1 in the long plate unit or the sleeve communicated with the two plate surfaces is arranged, so that after the long plate unit is assembled in place, the long plate unit can be limited by planting bars in the through holes or the sleeve or arranging limiting steel nails, and the bars planted with the bars or the limiting steel nails are correspondingly matched into the foundation of the lower part of the track, so that the limitation and the stability of the long plate unit are ensured. In addition, the limit of each long plate unit can be set in other forms according to actual needs, which is easy to be realized by using related technical means in the prior art, and thus, the detailed description is omitted.
Further, after the two adjacent prefabricated sleeper plates 1 in the preferred embodiment are correspondingly connected through the longitudinal connecting structure, connecting and filling parts can be arranged corresponding to the longitudinal connecting structure, and the connecting and filling parts are preferably obtained by casting reinforced concrete in situ in a space between the two prefabricated sleeper plates 1; of course, in the preferred embodiment, the connection filling portions may be correspondingly disposed between the two lateral ends of all the spacers, or the connection filling portions may be correspondingly disposed between the two lateral ends of only a part of the spacers, which may be preferred according to actual situations; further preferably, in the preferred embodiment, before the reinforced concrete is cast in place on the longitudinal connecting structure, the circumferential stirrups may be preferably arranged on the longitudinal connecting structure to connect the plurality of longitudinal connecting structures in the two-plate partition area into an integral structure, the number of the circumferential stirrups may be one, or may be a plurality of circumferential stirrups arranged at intervals in the longitudinal direction, and the connection form between the circumferential stirrups and the longitudinal connecting structure is not specifically limited, and may be welded or bound, and is not specifically limited herein; further, after the longitudinal connecting structures of the two adjacent prefabricated sleeper slabs are correspondingly connected and the hoop stirrups and the longitudinal connecting structures are connected in a matched mode to form the integral frame structure, the cast-in-place reinforced concrete is correspondingly arranged on the integral frame structure, so that the setting stability of the connecting and filling part between the two prefabricated sleeper slabs 1 is higher, the plurality of prefabricated sleeper slabs 1 can correspondingly form a stable long slab unit, namely, the same stress structure body is formed, the prefabricated sleeper slabs 1 in the long slab unit are not stressed independently but stressed integrally, and the stress stability of the long slab unit and even the ballastless track structure is ensured.
Further preferably, the plate body 101 is correspondingly provided with notches on the side surfaces for matching connection, the notches are preferably semi-annular, and after the two prefabricated sleeper plates 1 are aligned with the side surfaces and matched connection, the two notches on the two opposite side surfaces can be respectively aligned and form an annular notch, as shown in fig. 1, the corresponding notches formed by combination are provided with corresponding cover plates, so that the area between the two steel rails 5 on the ballastless track structure is horizontal, the walking is facilitated, and the garbage on the sleeper surface is reduced to fall into the drainage ditch 301.
Further preferably, the correspondence of prefabricated sleeper slab 1 both sides terminal surface middle part that is used for the accordant connection has seted up the breach of semicircular, the setting of breach makes the both ends of each terminal surface form protruding structure respectively, then each vertical reinforcing bar 102 can correspond the setting on the terminal surface of two protruding structures, when two prefabricated sleeper slabs 1 correspond the connection promptly, can correspond the protruding structure that makes two prefabricated sleeper slabs 1 tip and adjust well, then make the vertical reinforcing bar 102 that corresponds on the protruding structure adjust well respectively, thereby realize that prefabricated sleeper slab 1 connects with the correspondence of vertical reinforcing bar 102.
In the above preferred embodiment, the connection between two adjacent prefabricated sleeper slabs 1 is realized by embedding the longitudinal steel bars 102 on the end surface of each prefabricated sleeper slab 1, which is a preferred mode in the embodiment of the present invention, but not the only setting mode, for example, in another preferred embodiment, by correspondingly arranging sleeves on the end surface of each prefabricated sleeper slab 1, after the two prefabricated sleeper slabs 1 are correspondingly arranged on the rail lower foundation 3, the sleeves on the opposite side surfaces of the two prefabricated sleeper slabs 1 are respectively aligned, and then correspondingly arranging the longitudinal steel bars in each set of aligned sleeves, so that one end of the longitudinal steel bars is correspondingly connected to the sleeve on the side surface of one prefabricated sleeper slab 1, and the other end of the longitudinal steel bars is connected to the corresponding sleeve on the side surface of the other prefabricated sleeper slab 1, so that the two prefabricated sleeper slabs 1 can be correspondingly connected through the corresponding matching of a plurality of sets of sleeves and the longitudinal steel bars, and longitudinal steel bars are correspondingly connected and arranged in each group of sleeves respectively.
Certainly, vertical reinforcing bar or the pre-buried setting of sleeve accessible on the prefabricated sleeper slab 1 terminal surface also can set up through other forms, if set up the connecting plate on the terminal surface of prefabricated sleeper slab 1, realize the location with the corresponding welding of vertical reinforcing bar or telescopic one end on the connecting plate then.
In order to meet the requirements of vibration reduction areas, a vibration reduction layer 6 is arranged between a cast-in-place layer 2 and a track lower foundation 3, the vibration reduction layer 6, a self-compacting concrete layer 2 and a reinforced concrete backfill layer 3 are not fixed, and vibration generated by train operation is buffered through the arrangement of the vibration reduction layer 6. Preferably, the damping layer can be point support, strip support or face support type, and damping layer 6 sets up in post-cast layer lower part, pours the post-cast layer and constitutes unified structure with damping layer 6, has improved orbital participation of shaking quality, for construction convenience, can apply earlier and do the post-cast layer for make level to the lower part basis, then directly set up the damping layer, adjust the track board system, through the setting of damping layer 6 the vibration that the operation of buffering train produced.
The plurality of prefabricated sleeper slabs or prefabricated track slabs are arranged at intervals in the longitudinal direction, the connecting and filling parts 402 are respectively arranged at the two transverse ends of part or all of the spacing areas, the limiting members 4 are arranged at the part or all of the spacing areas, further, the number of the limiting members can be one or more, optimization can be carried out according to the arrangement form or the actual needs of the limiting members, the limiting members can be arranged at the spacing areas between the prefabricated sleeper slabs 1 along the track direction of the ballastless track, or the limiting members are arranged in the part of the spacing areas, optimization can be carried out according to the actual needs, and repeated description is omitted.
The limiting component 4 comprises a limiting steel bar 401 and a limiting sleeve 403, a connecting and filling part 402 is connected with two adjacent plate bodies 101 into a whole through a longitudinal connecting structure 102 connecting the two adjacent plate bodies, the connecting and filling part 402 is arranged on the cast-in-place layer 2 and the vibration damping layer 6 so as to be suitable for the up-and-down displacement generated by vibration, the limiting steel bar 401 and the limiting sleeve 403 are matched and connected with the filling part 402, wherein the limiting steel bar 401 and the limiting sleeve 402 are matched and arranged to form an integral vertical implanted structure in a connecting gap, the transverse and longitudinal limiting is realized through matching with the connecting and filling part 402, the vertical implanted structure is movably connected with the part of the track lower part foundation 3, namely one of the limiting steel bar 401 and the limiting sleeve is fixedly connected with the track lower part foundation 3, and the other one of the limiting steel bar 401 and the limiting sleeve is movably connected with the track lower part foundation, therefore, the vertical implanted structure can be ensured to be movable in the vertical direction while realizing the transverse and longitudinal limiting, thereby better buffering the vibration generated by the train operation.
In the first embodiment of the limiting member 4, as shown in fig. 4, a limiting sleeve 403 is fixedly arranged in the connection filling part 402, the height of the limiting sleeve 403 is flush with the height of the connection filling part 402, the bottom of the limiting sleeve 403 is not connected with the track lower foundation 3, the connection filling part 402 is a later-stage pouring structure, the limiting sleeve 403 is placed in a gap between the protrusions before pouring, and the connection filling part 402 with the height flush with the limiting sleeve 403 is formed by pouring; limiting steel bars 401 are arranged in the limiting sleeve 403, the bottoms of the limiting steel bars are fixed in the track lower portion foundation 3 to achieve transverse limiting and longitudinal limiting, the bottoms of the limiting steel bars 401 are fixedly connected with the track lower portion foundation 3 in a plurality of ways, and preferably, the bottoms of the limiting steel bars 401 are fixedly connected with the track lower portion foundation 3 through threads.
Further, in the second embodiment, as shown in fig. 5, the limiting steel bar 401 is a T-shaped limiting screw, the head of the T-shaped limiting screw is disposed at the top of the limiting sleeve 403, and the head of the T-shaped limiting screw is not connected with the limiting sleeve 403 and the connecting and filling part 402, so that the up-and-down movement of the connecting and filling part 402 is not limited, thereby buffering the vibration generated by the train operation and simultaneously realizing the transverse and longitudinal limiting. In the third embodiment, as shown in fig. 6, the bottom of the limiting steel bar 401 or the inverted T-shaped limiting screw is disposed in the track lower foundation 3 to fix the limiting steel bar 401, and the top of the limiting steel bar 401 is not connected with the connection filling part and the limiting sleeve 403 in a sliding manner.
In the fourth embodiment of the limiting member 4, as shown in fig. 7, the limiting steel bar 401 is arranged in the connecting and filling part 402, the top of the limiting steel bar 401 is fixedly connected with the connecting and filling part 402, the bottom of the limiting steel bar 401 is arranged at an interval with the damping layer 6, and the bottom of the limiting steel bar 401 is higher than the damping layer 6; spacing sleeve 403 is fixed on track lower part basis 3, spacing sleeve 403 is not fixedly connected with connection filling part 402, be equipped with isolating sleeve 404 between spacing sleeve 403 and the connection filling part 402, spacing sleeve and isolating sleeve 404 sliding connection, and the height of spacing sleeve 403 is less than the height of connection filling part 401, spacing reinforcing bar 401 is arranged in spacing sleeve 403, spacing reinforcing bar 401 and the matching of spacing sleeve 403 in locating connection filling part 402 realize horizontal and vertical spacing, realize connecting filling part 402 through connecting spacing reinforcing bar 401 and damping layer 6 interval height and reciprocate simultaneously, with the vibration that the buffering train operation produced.
As another aspect of the present invention, an assembling method of a prefabricated sleeper slab ballastless track for a vibration-damping zone includes the steps of:
s1, carrying the prefabricated sleeper plates 1 manufactured in a factory to a construction site, and carrying out initial adjustment and positioning after a preset number of the prefabricated sleeper plates are longitudinally arranged along a line;
s2: connecting the longitudinal steel bars 102 pre-embedded in the precast sleeper slab 1 together through a plurality of cold extrusion sleeves 104 for fine adjustment and positioning;
s3, arranging a plurality of limiting steel bars on the basis of the lower part of the track of a part or all of the spacers, sleeving limiting sleeves on the limiting steel bars, respectively pouring reinforced concrete on the transverse two ends of the spacers in the spacers which are simultaneously provided with the longitudinal connecting structures and the limiting members in situ, and wrapping and covering the longitudinal connecting structures, the limiting steel bars and the limiting sleeves; after curing, forming the connecting and filling part, and integrally forming the connecting and filling part and the connecting and filling part to realize simultaneous limiting and connecting; respectively pouring fillers at the transverse two ends of the interval area which is partially or completely not provided with the limiting reinforcing steel bars in situ, and wrapping and covering the longitudinal connecting structure; the method comprises the steps that integration, transverse/longitudinal limiting and vertical elastic deformation are simultaneously completed through one-time cast-in-place, so that a plurality of prefabricated sleeper plates are assembled to form a track unit with a preset length and form a same stressed structure body;
alternatively, the first and second electrodes may be,
arranging a plurality of limiting sleeves on the basis of the lower part of the track of a part or all of the spacing areas, placing limiting reinforcing steel bars in the limiting sleeves, arranging protection outside the limiting sleeves, respectively pouring reinforced concrete on site at the two transverse ends of the spacing areas in the spacing areas which are simultaneously provided with the longitudinal connecting structures and the limiting members, and wrapping and covering the longitudinal connecting structures, the limiting reinforcing steel bars and the limiting sleeves; after curing, forming the connecting and filling part, and integrally forming the connecting and filling part and the connecting and filling part to realize simultaneous limiting and connecting; respectively pouring reinforced concrete on the horizontal two ends of the spacing area which is partially or completely not provided with the limiting sleeve in situ, and wrapping and covering the longitudinal connecting structure; and the integration, the transverse/longitudinal limiting and the vertical elastic deformation are simultaneously completed through one-time cast-in-place, so that a plurality of prefabricated sleeper plates are assembled to form a track unit with a preset length and form a same stressed structure body.
According to the assembly type sleeper plate type ballastless track structure and the assembly method thereof, the ballastless track is simple in structure, the assembly method is simple and convenient, and the ballastless track structure is set to be in a form that a plurality of sleeper plates are assembled with one another, so that the ballastless track structure is obtained through rapid assembly, and the assembly type sleeper plate type ballastless track structure is effectively suitable for the application environment of subways. The sleeper slab is prefabricated and formed, and then the ballastless track structure is assembled in an assembling mode, so that the assembling mode is simple, the assembling efficiency is high, the assembling efficiency of the ballastless track structure can be greatly improved, the assembling period is shortened, and the two sleeper slabs can be correspondingly connected through the longitudinal connecting structures by correspondingly arranging the longitudinal connecting structures on the end surfaces of the two sides of the prefabricated sleeper slab, so that the connection of the sleeper slabs is effectively realized; the limiting members are correspondingly arranged at the positions of the two sleeper plates which are mutually connected, the longitudinal positions of the sleeper plates are limited by the limiting members, the stability of rail operation is effectively guaranteed, the operation precision of a rail is ensured, the limiting members and the longitudinal connecting structure can be integrally formed, the limitation and the connection of the sleeper plates can be simultaneously realized, the setting period of the sleeper plates is greatly shortened, and the setting efficiency of ballastless rails is improved
The bottom of the limiting steel bar 401 is fixed in a foundation at the lower part of the track, the limiting steel bar 401 is fixed in a threaded connection mode or in a pouring mode, the limiting steel bar 401 is sleeved in the limiting sleeve 403, and the limiting sleeve 403 is fixedly connected with the connecting and filling part 402.
Wherein, be equipped with high interval between spacing reinforcing bar 401's bottom and the track lower part basis 3, spacing reinforcing bar 401 with be connected filling part 402 and be connected, spacing sleeve 403 and track lower part basis 3 fixed connection, spacing reinforcing bar 401 and spacing sleeve 403 sliding connection to spacing reinforcing bar 401 moves with the buffering vibration along with connecting filling part 402 and reciprocate.
Preferably, the connecting filling part 402 is reinforced concrete, and the connecting filling part 402 adopts a cast-in-place concrete process.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A assembled sleeper board formula or track plate formula ballastless track structure for damping section contains longitudinal connection structure of colding pressing, its characterized in that:
the device comprises a prefabricated sleeper slab or a prefabricated track slab, a cast-in-place layer, a vibration damping layer, a track lower foundation, a connection filling part and a longitudinal connection structure of the prefabricated sleeper slab or the prefabricated track slab; the prefabricated sleeper plates or the prefabricated track plates are longitudinally arranged at intervals, and the transverse ends of the prefabricated sleeper plates or the prefabricated track plates in the interval area are respectively assembled and connected with each other through a longitudinal connecting structure; in part or all of the interval areas, a reinforced concrete structure is adopted as a connecting and filling part, so that the connecting and filling part and the prefabricated sleeper slab or the prefabricated track slab form an assembled integral structure, and the prefabricated sleeper slab or the prefabricated track slab forms a same stressed long slab unit structure body;
the longitudinal connecting structure comprises longitudinal steel bars and a cold extrusion sleeve; longitudinal steel bars are pre-embedded in two adjacent prefabricated sleeper plates or prefabricated track plates, extend out of the end faces and are arranged at intervals with the other matched longitudinal steel bar, and the two longitudinal steel bars are longitudinally connected through a cold extrusion sleeve;
the internal diameter of the cold extrusion sleeve is larger than the external diameter of the longitudinal steel bars, the butt joint ends of the two longitudinal steel bars are respectively inserted into the two ends of the cold extrusion sleeve, and the cold extrusion sleeve is deformed and locked under the extrusion of the portable extruder.
2. Assembly sleeper slab or track slab ballastless track structure for vibration-damped sections containing cold-pressed longitudinal connections according to claim 1,
connecting and filling parts are respectively arranged at the two transverse ends of at least part of the interval area, and protruding limiting steel bars are arranged on the upper surface of the track lower foundation of at least part of the interval area; the longitudinal connecting structure, the limiting steel bars and the limiting sleeves are all coated in the same connecting and filling part, and the longitudinal connecting structure, the limiting steel bars and the limiting sleeves are integrally formed to realize simultaneous limiting and connection, so that a plurality of prefabricated sleeper plates or prefabricated track plates are assembled to form a track unit with a preset length and form a same stressed structure body;
alternatively, the first and second electrodes may be,
the transverse two ends of at least part of the interval area are respectively provided with a connecting filling part, and the upper surface of the lower part foundation of the track of at least part of the interval area is provided with a protruding limiting sleeve; and in the interval area that is provided with connection filling part and stop component simultaneously, connect the filling part and bury limiting steel bar underground, limiting sleeve's outer wall with connect the filling part contactless, limiting steel bar slidable sets up in limiting sleeve, vertical connection structure, limiting steel bar, limiting sleeve all is cladded in same connect the filling part, four integrated into one piece realize spacing and connection simultaneously to a plurality of prefabricated sleeper slab or prefabricated track board assemble the track unit that forms predetermined length and form same atress structure.
3. The fabricated sleeper slab or track slab ballastless track structure containing cold-pressed longitudinal connection structure for vibration-damped sections as claimed in claim 2, wherein said prefabricated sleeper slab or prefabricated track slab comprises a plurality of pairs of fastener rail-bearing platforms.
4. The fabricated sleeper slab or track slab ballastless track structure containing cold-pressed longitudinal connection structure for vibration-damped sections as claimed in claim 3, wherein the prefabricated sleeper slab or the prefabricated track slab is provided with notches at both longitudinal ends, and the notches are provided with cover plates to form a smooth evacuation channel.
5. The fabricated sleeper plate or track plate ballastless track structure containing cold-pressed longitudinal connection structure for vibration-damped sections as claimed in claim 4, wherein said track lower base is provided with drainage ditches along its longitudinal direction.
6. The fabricated sleeper slab or track slab ballastless track structure containing cold-pressed longitudinal connection structure for vibration-damped sections as claimed in claim 4, wherein drainage ditches are provided at both lateral sides of the prefabricated sleeper slab or the prefabricated track slab.
7. The fabricated sleeper slab or track slab ballastless track structure containing cold-pressed longitudinal connection structures for vibration-damped sections as claimed in claim 2, wherein first limit structures are provided on both sides of the long slab unit, or second limit structures are provided in the slab.
8. The fabricated sleeper slab or track slab ballastless track structure containing cold-pressed longitudinal connection structures for vibration-damped sections as claimed in claim 2, wherein slab gaps are provided between a plurality of adjacent track units, and third limiting structures are provided in part or all of the slab gaps.
9. Method for assembling a fabricated sleeper slab or track slab ballastless track structure containing cold-pressed longitudinal connections for vibration-damped sections according to any one of claims 2 to 8, characterized in that it comprises the following steps:
s1: carrying prefabricated sleeper plates or prefabricated track plates manufactured in a factory to a construction site, and carrying out primary adjustment and positioning after a preset number of the prefabricated sleeper plates or the prefabricated track plates are longitudinally arranged along a line;
s2: connecting the prefabricated sleeper plates or the longitudinal steel bars pre-embedded in the prefabricated track plates together through a plurality of cold extrusion sleeves for fine adjustment and positioning;
s3: arranging a plurality of limiting reinforcing steel bars on the basis of the lower part of the track of part or all of the spacing areas, sleeving the limiting reinforcing steel bars with limiting sleeves, respectively pouring reinforced concrete on the transverse two ends of the spacing areas in the spacing areas which are simultaneously provided with the longitudinal connecting structures and the limiting members in situ, and wrapping and covering the longitudinal connecting structures, the limiting reinforcing steel bars and the limiting sleeves; after curing, forming the connecting and filling part, and integrally forming the connecting and filling part and the connecting and filling part to realize simultaneous limiting and connecting; respectively pouring reinforced concrete on the transverse two ends of the interval area which is partially or completely not provided with the limiting reinforcing steel bars in situ, and wrapping and covering the longitudinal connecting structure; the method comprises the steps of simultaneously finishing integration, transverse/longitudinal limiting and vertical elastic deformation through one-time cast-in-place, so that a plurality of prefabricated sleeper plates or prefabricated track plates are assembled to form track units with preset lengths and form a same stressed structure body;
alternatively, the first and second electrodes may be,
arranging a plurality of limiting sleeves on the basis of the lower part of the track of a part or all of the spacing areas, placing limiting reinforcing steel bars in the limiting sleeves, arranging protection outside the limiting sleeves, respectively pouring reinforced concrete on site at the two transverse ends of the spacing areas in the spacing areas which are simultaneously provided with the longitudinal connecting structures and the limiting members, and wrapping and covering the longitudinal connecting structures, the limiting reinforcing steel bars and the limiting sleeves; after curing, forming the connecting and filling part, and integrally forming the connecting and filling part and the connecting and filling part to realize simultaneous limiting and connecting; respectively pouring reinforced concrete on the horizontal two ends of the spacing area which is partially or completely not provided with the limiting sleeve in situ, and wrapping and covering the longitudinal connecting structure; and the integration, the transverse/longitudinal limiting and the vertical elastic deformation are simultaneously completed through one-time cast-in-place, so that a plurality of prefabricated sleeper plates or prefabricated track plates are assembled to form a track unit with a preset length and form a same stressed structure body.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884758.9A CN110761119A (en) | 2019-09-19 | 2019-09-19 | Cold-pressed longitudinal-connection-containing assembly type ballastless track structure of vibration reduction section and assembly method |
| PCT/CN2019/129429 WO2021051706A1 (en) | 2019-09-19 | 2019-12-27 | Vibration reduction section prefabricated ballastless track structure having longitudinal connecting structure, and assembly method |
| SG11202109651Y SG11202109651YA (en) | 2019-09-19 | 2019-12-27 | Vibration reduction section prefabricated ballastless track structure having longitudinal connecting structure, and assembly method |
| BR112021020307-9A BR112021020307B1 (en) | 2019-09-19 | 2019-12-27 | ASSEMBLED BALLASTLESS RAIL STRUCTURE EQUIPPED WITH LONGITUDINAL CONNECTION STRUCTURES FOR VIBRATION DAMPENING SECTION AND MOUNTING METHOD |
| IL285970A IL285970A (en) | 2019-09-19 | 2021-08-30 | Vibration reduction section prefabricated ballastless track structure having longitudinal connecting structure, and assembly method |
| ZA2022/01832A ZA202201832B (en) | 2019-09-19 | 2022-02-11 | Vibration reduction section prefabricated ballastless track structure having longitudinal connecting structure, and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884758.9A CN110761119A (en) | 2019-09-19 | 2019-09-19 | Cold-pressed longitudinal-connection-containing assembly type ballastless track structure of vibration reduction section and assembly method |
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| CN110761119A true CN110761119A (en) | 2020-02-07 |
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| CN201910884758.9A Pending CN110761119A (en) | 2019-09-19 | 2019-09-19 | Cold-pressed longitudinal-connection-containing assembly type ballastless track structure of vibration reduction section and assembly method |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN110761119A (en) |
| IL (1) | IL285970A (en) |
| SG (1) | SG11202109651YA (en) |
| WO (1) | WO2021051706A1 (en) |
| ZA (1) | ZA202201832B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958341A (en) * | 2021-08-31 | 2022-01-21 | 中铁第一勘察设计院集团有限公司 | Tunnel assembled inverted arch prefabricated block structure |
| CN114922008A (en) * | 2022-05-23 | 2022-08-19 | 中铁十五局集团有限公司 | Ballastless track high-speed railway roadbed reinforcement waterproof structure and construction method thereof |
| CN116971223A (en) * | 2023-09-22 | 2023-10-31 | 中铁三局集团有限公司 | Damping structure and damping method of track slab fine adjustment equipment |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183165B (en) * | 2021-11-26 | 2024-05-14 | 东南大学 | Elastic composite duct piece for special vibration reduction section |
| CN114319005B (en) * | 2022-02-25 | 2023-03-10 | 陇东学院 | Road plate and assembled road structure |
| CN114703702A (en) * | 2022-03-21 | 2022-07-05 | 成都天府轨谷科技有限公司 | Longitudinal connection device for track, track plate beam longitudinal connection structure and construction method |
| CN115142559B (en) * | 2022-04-08 | 2024-05-10 | 安徽省公路桥梁工程有限公司 | Equipment, track foundation embedded plate installation and construction device and application method thereof |
| CN114960302B (en) * | 2022-04-21 | 2023-07-25 | 中南大学 | High-speed railway assembled ballastless track structure and construction method |
| CN114837022B (en) * | 2022-06-02 | 2023-06-20 | 江西龙正科技发展有限公司 | UHPC ballastless track |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914715A (en) * | 2018-08-20 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | Assembled ballastless track structure and assembly method for vibration damping location |
| CN108914714A (en) * | 2018-08-20 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | A kind of assembled sleeper is board-like or track platy ballastless track structure and assembly method |
| CN108914716A (en) * | 2018-08-20 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | A kind of prefabricated concrete slab sleeper or the wet of track plate-type ballastless track connect formula assembly method |
| CN211340219U (en) * | 2019-09-19 | 2020-08-25 | 中铁第四勘察设计院集团有限公司 | Assembled ballastless track structure containing cold pressing longitudinal connection of vibration reduction section |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10209438B4 (en) * | 2002-03-05 | 2006-03-23 | Ferd. Braselmann Gmbh & Co. Kg | Device for connecting plates, in particular concrete slabs, and fixed track for rail vehicles |
| CN101603281B (en) * | 2009-07-02 | 2011-11-23 | 中铁二院工程集团有限责任公司 | Integral ballastless track |
| CN201459522U (en) * | 2009-07-02 | 2010-05-12 | 中铁二院工程集团有限责任公司 | Integral type ballastless track |
| CN201581307U (en) * | 2009-10-22 | 2010-09-15 | 中铁二院工程集团有限责任公司 | Longitudinal connecting component of slab type ballastless track for high speed railway |
| CN203307692U (en) * | 2013-06-06 | 2013-11-27 | 隔而固(青岛)振动控制有限公司 | Built-in joint sleeve with anchoring part |
| GB2554348B (en) * | 2016-09-13 | 2021-10-20 | Univ Nottingham | Tram, light rail and guided bus systems and components |
| CN208995840U (en) * | 2018-08-20 | 2019-06-18 | 中铁第四勘察设计院集团有限公司 | A kind of assembled sleeper is board-like or track platy ballastless track structure |
| CN108914713B (en) * | 2018-08-20 | 2021-01-15 | 中铁第四勘察设计院集团有限公司 | Wet-connection type assembling method for ballastless track of vibration reduction zone |
| CN209024893U (en) * | 2018-08-20 | 2019-06-25 | 中铁第四勘察设计院集团有限公司 | Assembled ballastless track structure for vibration damping location |
-
2019
- 2019-09-19 CN CN201910884758.9A patent/CN110761119A/en active Pending
- 2019-12-27 WO PCT/CN2019/129429 patent/WO2021051706A1/en active Application Filing
- 2019-12-27 SG SG11202109651Y patent/SG11202109651YA/en unknown
-
2021
- 2021-08-30 IL IL285970A patent/IL285970A/en unknown
-
2022
- 2022-02-11 ZA ZA2022/01832A patent/ZA202201832B/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914715A (en) * | 2018-08-20 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | Assembled ballastless track structure and assembly method for vibration damping location |
| CN108914714A (en) * | 2018-08-20 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | A kind of assembled sleeper is board-like or track platy ballastless track structure and assembly method |
| CN108914716A (en) * | 2018-08-20 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | A kind of prefabricated concrete slab sleeper or the wet of track plate-type ballastless track connect formula assembly method |
| CN211340219U (en) * | 2019-09-19 | 2020-08-25 | 中铁第四勘察设计院集团有限公司 | Assembled ballastless track structure containing cold pressing longitudinal connection of vibration reduction section |
Non-Patent Citations (1)
| Title |
|---|
| 刘清等: "钢筋工", 31 January 2017, 中国建材工业出版社, pages: 182 - 183 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958341A (en) * | 2021-08-31 | 2022-01-21 | 中铁第一勘察设计院集团有限公司 | Tunnel assembled inverted arch prefabricated block structure |
| CN114922008A (en) * | 2022-05-23 | 2022-08-19 | 中铁十五局集团有限公司 | Ballastless track high-speed railway roadbed reinforcement waterproof structure and construction method thereof |
| CN116971223A (en) * | 2023-09-22 | 2023-10-31 | 中铁三局集团有限公司 | Damping structure and damping method of track slab fine adjustment equipment |
| CN116971223B (en) * | 2023-09-22 | 2023-12-08 | 中铁三局集团有限公司 | Damping structure and damping method of track slab fine adjustment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| SG11202109651YA (en) | 2021-10-28 |
| WO2021051706A1 (en) | 2021-03-25 |
| IL285970A (en) | 2021-10-31 |
| BR112021020307A2 (en) | 2022-03-29 |
| ZA202201832B (en) | 2022-05-25 |
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