CN211340220U - Assembly type ballastless track structure and longitudinal connecting structure thereof - Google Patents

Abstract

The utility model discloses an assembled ballastless track structure and vertical connection structure thereof, pre-buried longitudinal reinforcement carry out longitudinal connection through the extrusion sleeve, and the butt joint end of two longitudinal reinforcements inserts respectively in the telescopic both ends of extrusion, under the extrusion of portable extruder, the extrusion sleeve warp the locking. The utility model discloses can improve the precision when the on-the-spot facility of spreading, conveniently dismantle and install, reduce the construction degree of difficulty, improve the site operation speed, and simple structure makes things convenient for the location of sleeper slab or track board.

Description

Assembly type ballastless track structure and longitudinal connecting structure thereof

Technical Field

The utility model belongs to the ballastless track field, more specifically relates to a vertical connection structure of assembled sleeper board-like or track board-like ballastless track structure, and contain this vertical connection structure's ballastless track structure.

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 CN201695285U discloses a tension lock for longitudinal connection of ballastless track slabs, which is used for realizing longitudinal connection by connecting and locking 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.

SUMMERY OF THE UTILITY MODEL

To the above defect of prior art or improve in the demand one or more, the utility model provides an assembled sleeper board-like or the board-like ballastless track structure's of track longitudinal tie structure reaches the ballastless track structure who contains this longitudinal tie structure, can improve the precision when the on-the-spot shop facility, conveniently dismantles and installs, reduces the construction degree of difficulty, improves on-the-spot construction speed, and simple structure, makes things convenient for the location of sleeper board or track board.

In order to achieve the above object, an aspect of the present invention provides a longitudinal connection structure of an assembled sleeper slab or track slab ballastless track structure, which is characterized in that:

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 an extrusion sleeve;

the internal diameter of the 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 extrusion sleeve, and the extrusion sleeve is deformed and locked under the extrusion of the portable extruder.

Preferably, the portion of the butt end of the longitudinal reinforcing bar inserted into the compression sleeve comprises at least three turns of thread.

In order to achieve the above object, another aspect of the present invention provides an assembled sleeper slab or track slab ballastless track structure, which is characterized in that:

the prefabricated track slab comprises a prefabricated sleeper slab or a prefabricated track slab, a cast-in-place layer, a track lower foundation, a connecting and filling part and the longitudinal connecting structure of the fabricated sleeper slab or track slab ballastless track structure;

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 a 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 track slab forms a same stressed long slab unit structure body.

As the utility model discloses a further improvement, the horizontal both ends of at least partial spacer are provided with respectively and connect the packing part, at least partial spacer the track lower part basis is provided with stop component, and is provided with simultaneously in the spacer of connecting packing part and stop component vertical connection structure with stop component all buries underground in same in connecting the packing part, three integrated into one piece realizes spacing and connection simultaneously to a plurality of prefabricated sleeper slab or prefabricated track board assembly form predetermined length's track unit and form same atress structure.

As a further improvement, the limiting component is the embedded bar, the embedded part of the steel bar sleeve, the limiting boss or the reserved steel bar on the upper surface of the track lower part foundation.

As the utility model discloses a further improvement, contain many pairs of fastener rail bearing platform in prefabricated sleeper slab or the prefabricated track board, preferably 2 ~ 10 are right, more preferably 4 ~ 6 are right.

As a further improvement, the middle part of the prefabricated sleeper slab or the prefabricated track slab is provided with lightening holes, and the vertical two ends of the prefabricated sleeper slab or the prefabricated track slab are provided with notches.

As a further improvement of the utility model, the lightening hole with set up the apron on the breach, form smooth evacuation passageway.

As a further improvement, the track lower part basis vertically disposes the escape canal along it.

As a further improvement of the utility model, long board unit both sides set up first limit structure, or set up second limit structure in the board.

As the utility model discloses a further improvement, it is a plurality of adjacent set up the board seam between the track unit, part or whole set up third limit structure in the board seam.

As a further improvement, the prefabricated sleeper slab or the prefabricated track slab is a non-prestressed slab.

The above-described improved technical features may be combined with each other as long as they do not conflict with each other.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:

(1) the utility model discloses a longitudinal connection structure of assembled sleeper board formula or track slab ballastless track structure, connection structure is simple, only contains the extrusion sleeve and exposes the reinforcing bar, and adjacent sleeper board or track board are at same horizontal plane, through adjacent reinforcing bar connection that exposes, can accomplish vertical and horizontal location to the section of track structure, found prefabricated sleeper board of mould or track board.

(2) The utility model discloses a longitudinal connection structure of assembled sleeper slab formula or track slab formula ballastless track structure, manufacturing method is simple and convenient, has connected adjacent sleeper slab or track board in advance through the extrusion sleeve, has improved the assembly precision, and reduction in production cost has satisfied the needs of high efficiency production prefabricated plate.

(3) The utility model discloses a longitudinal connection structure of assembled sleeper slab formula or track slab formula ballastless track structure, site operation only need lay prefabricated sleeper slab or track board and target in place, and the packing material is once pour to installation extrusion sleeve, has guaranteed sleeper slab or track board promptly on same horizontal plane, and site operation is fast.

(4) The utility model discloses an assembled sleeper slab formula or track slab formula ballastless track structure, it is through setting up a plurality of prefabricated sleeper slabs or prefabricated track slabs that can correspond the erection joint, make it set up along the track direction interval on track lower part basis, and correspond and set up vertical connection structure between two adjacent prefabricated sleeper slabs or prefabricated track slabs in order to correspond the matching connection, and pour concrete in the connection area, make prefabricated sleeper slab or prefabricated track slab form assembled overall structure, thereby realized the effective connection of each prefabricated sleeper slab or prefabricated track slab, the long slab unit structure body of same atress has been formed, the wholeness of prefabricated sleeper slab or prefabricated track slab connection assembly has been guaranteed, the assembly accuracy and the reliability of ballastless track structure have been improved;

(5) the utility model discloses an assembled sleeper slab formula or track slab formula ballastless track structure, it sets up stop component through the compartment correspondence between prefabricated sleeper slab or prefabricated track board, correspond cast in situ concrete on longitudinal tie structure and stop component, make stop component and longitudinal tie structure cladding simultaneously in concrete structure, and then make each prefabricated sleeper slab or prefabricated track board and track lower part basis form overall structure, thereby effectively realized connecting and spacing simultaneously of prefabricated sleeper slab or prefabricated track board, avoided the direct hard connection in the current sleeper slab connection process, guaranteed the precision and the reliability of sleeper slab connection, the time of sleeper slab connection setting has been shortened, the efficiency of ballastless track structure setting has been promoted, ballastless track structure setting cost has been reduced;

(6) the utility model discloses a board-like or track board-like ballastless track structure of assembled sleeper, its longitudinal connection structure and stop component can set up through the mode of pre-buried bar planting respectively, and the setting mode is simple, connects portably, can further promote ballastless track structure's setting efficiency, shortens the cycle of construction, and its longitudinal connection structure and stop component carry out the cladding through cast in situ concrete simultaneously to form holistic connection-stop structure, effectively promote structural stability, ensure the precision of connection and spacing, promote ballastless track structure's application stability;

(7) the utility model discloses an assembled sleeper board formula or track board formula ballastless track structure, it is through seting up lightening hole in the middle part of the sleeper board, and/or correspond in the both sides of sleeper board and set up the breach, then form the frame plate, can effectively alleviate the weight of sleeper board, reduce the difficulty of sleeper board transportation, laying, material saving, and it can correspond the escape canal on the basis of track lower part, the clearance of debris in the escape canal of being convenient for, realize the quick inspection and the maintenance of escape canal drainage function, promote ballastless track structure's application convenience;

(8) the utility model discloses an assembled sleeper slab formula or track slab formula ballastless track structure, it is formed along the corresponding series connection of track direction through a plurality of prefabricated sleeper slabs, the face of each sleeper slab is level respectively, and after set up lightening hole and breach on prefabricated sleeper slab, it is provided with the apron respectively to correspond each lightening hole and breach, make the up end of each lightening hole and each breach all can be covered, guarantee the regional level between two rails of ballastless track structure, make things convenient for personnel evacuation under the emergency, the personnel that have avoided the terminal surface protruding structure that current ballastless track unit board set up because of connecting needs to arouse walk inconveniently, make ballastless track structure more effectively adapt to the application of occasions such as subway, satisfy ballastless track's safe evacuation needs;

(9) the utility model discloses a board-like or track slab ballastless track structure of assembled sleeper, it corresponds the assembly through a plurality of prefabricated sleeper boards or prefabricated track board and forms, its totality is the assembled structure, in case the track disease appears in the ballastless track structure application in the later stage, can correspondingly abolish the post-cast area of track structure disease position to unblock the prefabricated sleeper board or the prefabricated track board of this position, thereby can change or adjust the prefabricated sleeper board or the prefabricated track board of disease position, the maintenance time and the cost of maintenance of ballastless track have been showing to be reduced;

(10) the utility model discloses an assembled sleeper slab formula or track slab formula ballastless track structure, it is through setting up the prefabricated sleeper slab or the prefabricated track board of certain length, assemble into long slab unit with it, according to the difference of service area, can adopt the sleeper slab or the track board of different length specifications, and set up prefabricated sleeper slab or prefabricated track board as the short slab through adopting, can further promote the curve adaptability of prefabricated sleeper slab or prefabricated track board, reduce the kind and the quantity of non-standard plate and curve board, reduce the prefabrication cost of sleeper slab or track board, improve ballastless track structure's economic nature, also make things convenient for the laying fine tuning in later stage;

(11) the utility model discloses an assembled sleeper slab formula or track slab formula ballastless track structure, it is through assembling a plurality of prefabricated sleeper slabs or prefabricated track boards into long slab unit, correspond and set up limit structure between adjacent long slab unit, or set up limit structure in the both sides of long slab unit, or set up limit structure on the plate body of some or all prefabricated sleeper slabs or prefabricated track boards in the long slab unit, make each long slab unit can realize accurate spacing, guarantee the stability and the accuracy nature that long slab unit set up, promote the precision that ballastless track structure used;

(12) the utility model discloses a board-like or track board-like ballastless track structure of assembled sleeper, its simple structure, assembly method is simple and convenient, but rapid Assembly obtains ballastless track structure, and the connection and the spacing precision of sleeper board or track board are high, the good reliability, and track assembly's is efficient, and the setting cycle is short, effectively reduces ballastless track structure's the cost that sets up, reduces the waste of material, promotes orbital life, has very important popularization and application and worth.

Drawings

Fig. 1 is a schematic perspective view of an assembled sleeper plate type or track plate type ballastless track structure in an embodiment of the present invention;

fig. 2 is an exploded view of the overall structure of an assembled sleeper slab or track slab ballastless track structure according to an embodiment of the present invention;

fig. 3 is a transverse cross-sectional view of an assembled sleeper slab or track slab ballastless track structure according to an embodiment of the present invention;

fig. 4 is a longitudinal sectional view of a longitudinal connecting structure of an assembled sleeper slab or track slab ballastless track structure according to an embodiment of the present invention;

fig. 5 is a plan view of a longitudinal connecting structure of an assembled sleeper slab or track slab ballastless track structure according to an embodiment of the present invention;

fig. 6 is a partial schematic view of a longitudinal connection structure of an assembled sleeper slab or track slab ballastless track structure according to an embodiment of the present invention;

in all the figures, the same reference numerals denote the same features, in particular: 1. prefabricating a sleeper slab, 101, a slab body, 102, longitudinal reinforcements, 103, lightening holes, 104, an extrusion sleeve, 1041, extrusion ribs, 2, a cast-in-place layer, 3, a rail lower foundation and 301, a drainage ditch; 4. a limiting component, 401, a limiting steel bar, 402, a filling part; 5. a steel rail.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

The utility model discloses assembly type sleeper plate formula or the board-like ballastless track structure's of track overall structure sketch map is shown in fig. 1 and fig. 2 in the preferred embodiment, wherein, ballastless track structure corresponds through the prefabricated sleeper slab or the prefabricated track board along vertical interval arrangement in proper order and connects the assembly and form the utility model discloses a following preferred embodiment, preferably use prefabricated sleeper slab 1 to explain for the example, of course, prefabricated track board also can correspond through the form of setting up in following preferred embodiment and connect the assembly, forms ballastless track structure.

In the preferred embodiment of the utility model, the ballastless track structure comprises a prefabricated sleeper slab 1, a cast-in-place layer 2 and a track lower part foundation 3 which are matched and arranged in sequence; 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 reinforced concrete, and is used for bearing the prefabricated tie plate 1, 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 slabs 1 in the preferred embodiment, which may be further specifically longitudinal steel bars 102 respectively arranged on the side surfaces, to which the two prefabricated sleeper slabs 1 may be correspondingly connected, of the preferred embodiment, the longitudinal steel bars 102 are arranged along the length direction of the prefabricated sleeper slabs 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 slabs 1 at intervals in the preferred embodiment, and then after the two prefabricated sleeper slabs 1 are aligned, the longitudinal steel bars 102 on the opposite side surfaces of the two prefabricated sleeper slabs 1 may be respectively aligned, and then the corresponding connection is realized.

As shown in fig. 4, 5 and 6, 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 an extrusion sleeve 104; the inner diameter of the extrusion sleeve 104 is larger than the outer 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 extrusion sleeve 104, the extrusion sleeve 104 is deformed and locked under the extrusion of the portable extruder, and a plurality of extrusion ribs 1041 are formed outside. Preferably, the portion of the butt end of the longitudinal reinforcing bar 102 inserted into the pressing sleeve 104 includes at least three turns of threads to secure 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, a connecting filling part can be arranged corresponding to the longitudinal connecting structure, and the connecting filling part is preferably obtained by casting reinforced concrete or organic materials 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 in the cross section plane may be preferably arranged on the longitudinal connecting structure to connect the plurality of longitudinal connecting structures and the connecting and filling parts in the partition areas between the two plates into an integral structure, the number of the circumferential stirrups may be one or 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 the circumferential stirrups and the longitudinal connecting structure may be connected by welding or binding, 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, in the preferred embodiment, a spacing area between two adjacent prefabricated sleeper plates 1 is correspondingly provided with a limiting member, which in the preferred embodiment is a limiting steel bar 401 vertically arranged on the track lower foundation, that is, one end of the limiting steel bar 401 is fixedly arranged on the track lower foundation 3, and the other end is vertically arranged between the two prefabricated sleeper plates 1; of course, the connection mode between the limiting steel bars 401 and the track lower foundation 3 can be optimized according to actual needs, such as on-site bar planting, or fixed on the track lower foundation 3 in an embedded mode; the limiting component can also be arranged in other forms, such as arranging a steel bar sleeve embedded part in the foundation 3 at the lower part of the track, or correspondingly arranging a limiting boss in the spacing area, and the like; further, the number of the limiting members can be one or more, which can be optimized according to the arrangement form of the limiting members or actual needs, and along the track direction of the ballastless track, the spacing areas between the prefabricated sleeper slabs 1 can be all provided with the limiting members, or the limiting members are arranged in part of the spacing areas, which can be optimized according to the actual needs, and details are not repeated herein.

Further, in a preferred embodiment, if a spacing member is disposed in a spacing area between two prefabricated sleeper slabs 1, and is disposed after the longitudinal connecting structure is correspondingly connected, and if a circumferential stirrup is disposed corresponding to the longitudinal connecting structure, the spacing member and the circumferential stirrup can be preferably correspondingly matched and connected, so that the spacing member and the longitudinal connecting structure form an integral structure, then reinforced concrete is poured into the integral structure, and a filling part 402 as shown in the drawing is formed, and the filling part 402 simultaneously covers the spacing member and the longitudinal connecting structure to form an integral structure, thereby realizing simultaneous spacing and connection, so that the longitudinal connecting structure, the spacing member and the connecting and filling part are integrally formed, and thus each prefabricated sleeper slab 1 forms an integral stressed structure.

Further preferably, lightening holes 103 penetrating through two end surfaces of the plate body 101 are formed in the middle of the prefabricated sleeper plate 1 in the preferred embodiment, so that the prefabricated sleeper plate 1 is of a frame plate structure, and the lightening holes 103 are formed in positions aligned with drainage ditches 301 arranged in the middle of the rail lower foundation 3, so that the weight of the prefabricated sleeper plate 1 is reduced, materials are saved, transportation and installation are facilitated, the drainage ditches 301 are greatly facilitated to be cleaned, and the blockage of the drainage ditches 301 in the application process of the ballastless rail structure is reduced; correspondingly, in the preferred embodiment, a cover plate is arranged corresponding to the lightening hole 103, and the cover plate can be correspondingly covered on the lightening hole 103 to form a smooth evacuation channel so as to facilitate walking on the ballastless track structure; further preferably, the plate body 101 is provided with notches on the side surfaces for matching connection, and the notches are preferably semi-annular, so that the weight of the prefabricated sleeper slab 1 is further reduced, after the two prefabricated sleeper slabs 1 are aligned with the side surfaces and matched and connected, the two notches on the two opposite side surfaces can be respectively aligned and form an annular notch, as shown in fig. 1, corresponding cover plates are arranged on the notches formed by corresponding combination, so that the area between the two steel rails 5 on the ballastless track structure is horizontal, walking is facilitated, and garbage on the sleeper surface is reduced to fall into the drainage ditch 301.

Further preferably, prefabricated sleeper slab 1 is used for the both sides terminal surface middle part correspondence of accordant connection to set 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 to 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 pre-embedding the longitudinal steel bars 1 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 sides 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 of one prefabricated sleeper slab 1, and the other end of the longitudinal steel bars is connected to the corresponding sleeve on the side of the other prefabricated sleeper slab 1, thereby enabling the two prefabricated sleeper slabs 1 to realize corresponding connection through 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.

Further, the assembling method of the assembled sleeper slab or track slab ballastless track structure described above may preferably be performed by the following steps, wherein, preferably, taking the prefabricated sleeper slab 1 as an example, the assembling of the prefabricated track slab may be performed by the same steps, which include the following steps:

s1: correspondingly forming and pouring a track lower part foundation 3 in a tunnel (such as a subway tunnel), then carrying prefabricated sleeper plates 1 manufactured in a factory to a construction site, sequentially placing the prefabricated sleeper plates 1 on the track lower part foundation 3 at certain intervals along the traveling direction of a track, reserving certain intervals between the prefabricated sleeper plates 1 and the track lower part foundation 3, and carrying out initial adjustment and positioning on the prefabricated sleeper plates 1;

s2: correspondingly matching and connecting each prefabricated sleeper slab 1 through a plurality of longitudinal connecting structures (such as longitudinal steel bars 102 and extrusion sleeves 104 recorded in the preferred embodiment) to form one or more long slab units, correspondingly setting each long slab unit into a ballastless track structure, and then finely adjusting and positioning each prefabricated sleeper slab 1 to enable the steel rail 5 of the ballastless track structure to be horizontal integrally and ensure the flatness or levelness of the steel rail 5;

s3: a limiting member (such as a limiting steel bar 401 recorded in a preferred embodiment) is arranged on the basis of the lower part of the track of a part or all of the spacers, in the spacers which are simultaneously provided with the longitudinal connecting structure and the limiting member, fillers (concrete or organic damping materials can be further preferred) are respectively poured on site at the two transverse ends of the spacers, the longitudinal connecting structure and the limiting member are wrapped and covered by the fillers, a connecting filling part is formed after curing, and the three parts are integrally formed to realize simultaneous limiting and connecting; respectively pouring fillers at the transverse two ends of the spacer which is partially or completely not provided with the limiting member in situ, and wrapping and covering the longitudinal connecting structure; the integration, the transverse limiting and the longitudinal limiting are simultaneously completed through one-time cast-in-place, so that a plurality of prefabricated sleeper plates are assembled to form a long plate unit with a preset length and form a uniform stressed structure body.

The utility model provides a board-like or track board-like ballastless track structure of assembled sleeper and assembly method, its ballastless track's simple structure, assembly method is simple and convenient, through setting up ballastless track structure into the form of a plurality of sleeper boards mutual assecmbly to rapid Assembly obtains ballastless track structure, effectively is applicable to the application environment of subway. The utility model provides a sleeper slab, it is through prefabricating the shaping, and then the assembly of ballastless track structure is accomplished to the form of assembly, and the assembly form is simple, and assembly efficiency is high, can promote ballastless track structure's assembly efficiency by a wide margin, shortens the cycle of assembly, and through corresponding the vertical connection structure that sets up on the both sides terminal surface of prefabricating sleeper slab, makes and can correspond the connection through vertical connection structure between two sleeper slabs, has effectively realized the connection of sleeper slab; the limiting members are correspondingly arranged at the positions where the two sleeper plates are connected, and limit the longitudinal positions of the sleeper plates, so that the running stability of the track is effectively ensured, the running precision of the track is ensured, and the limiting members and the longitudinal connecting structure can be integrally formed, so that 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 the ballastless track is improved; meanwhile, the weight of the sleeper plate can be effectively reduced by arranging the lightening holes in the middle of the sleeper plate, the transportation convenience of the sleeper plate is improved, materials are saved, the production cost of the sleeper plate is reduced, and the sleeper plate has very important popularization and application values.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a vertical connection structure of assembled ballastless track structure which characterized in that: an assembled sleeper plate type or track plate type ballastless track structure;

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 an extrusion sleeve;

the internal diameter of the 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 extrusion sleeve, and the extrusion sleeve is deformed and locked under the extrusion of the portable extruder.

2. The longitudinal connection structure of the fabricated ballastless track structure of claim 1, wherein:

the part of the butt end of the longitudinal steel bar inserted into the extrusion sleeve comprises at least three turns of threads.

3. The utility model provides an assembled ballastless track structure which characterized in that: the assembly type ballastless track structure is an assembly type sleeper plate or track plate type ballastless track structure;

a longitudinal connecting structure comprising a prefabricated sleeper slab or a prefabricated track slab, a cast-in-place layer, a track lower foundation, a connecting and filling part and the assembled ballastless track structure of any one of claims 1-2;

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 a 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 track slab forms a same stressed long slab unit structure body.

4. The fabricated ballastless track structure of claim 3, wherein:

the transverse ends of at least part of the interval area are respectively provided with a connecting and filling part, the lower part of the track of at least part of the interval area is provided with a limiting member, the longitudinal connecting structure and the limiting member in the interval area which is simultaneously provided with the connecting and filling part and the limiting member are both embedded in the same connecting and filling part, the longitudinal connecting structure and the limiting member are integrally formed to realize simultaneous limiting and connecting, and therefore 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.

5. The fabricated ballastless track structure of claim 4, wherein:

the limiting component is a steel bar, a steel bar sleeve embedded part, a limiting boss or a reserved steel bar on the upper surface of the lower foundation of the track.

6. The fabricated ballastless track structure of claim 4, wherein:

the middle part of the prefabricated sleeper plate or the prefabricated track plate is provided with lightening holes, and the longitudinal two ends of the prefabricated sleeper plate or the prefabricated track plate are provided with notches.

7. The fabricated ballastless track structure of claim 6, wherein:

the lightening holes and the notches are provided with cover plates to form a smooth evacuation channel.

8. The fabricated ballastless track structure of claim 6, wherein:

the track lower part basis is equipped with the escape canal along its vertical.

9. The fabricated ballastless track structure of claim 4, wherein:

and first limiting structures are arranged on two sides of the long plate unit, or second limiting structures are arranged in the plate.

10. The fabricated ballastless track structure of claim 4, wherein:

plate seams are arranged among a plurality of adjacent track units, and a third limiting structure is arranged in part or all of the plate seams.

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