CN110761120A - Assembled sleeper plate type or track plate type ballastless track structure and longitudinal connecting structure thereof - Google Patents

Abstract

The invention discloses a longitudinal connecting structure of an assembled sleeper plate type or track plate type ballastless track structure and a ballastless track structure comprising the longitudinal connecting structure. The invention 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 simple structure and is convenient to position the sleeper slab or the track slab.

Description

Assembled sleeper plate type or track plate type ballastless track structure and longitudinal connecting structure thereof

Technical Field

The invention belongs to the field of ballastless tracks, and particularly relates to a longitudinal connecting structure of an assembled sleeper plate type or track plate type ballastless track structure and a ballastless track structure comprising the longitudinal connecting 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.

Disclosure of Invention

Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides the longitudinal connecting structure of the assembled sleeper plate type or track plate type ballastless track structure and the ballastless track structure comprising the longitudinal connecting structure, which can improve the working time precision of on-site paving facilities, facilitate the disassembly and the assembly, reduce the construction difficulty, improve the on-site construction speed, have simple structure and facilitate the positioning of the sleeper plate or track plate.

In order to achieve the above object, in one aspect of the present invention, a longitudinal connection structure of an assembled sleeper slab or track slab ballastless track structure is provided, 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 a split type connecting sleeve;

every split type connecting sleeve includes two semi-circular sleeves and two lock sleeves, and two semi-circular sleeve inner circles are equipped with the screw thread, and the lock is in butt joint department and the interlock matching of two longitudinal reinforcement, and two lock sleeves overlap respectively and establish two semi-circular sleeve outer lane both ends of lock and lock.

Preferably, the outer rings at two ends of the two semicircular sleeves and the inner rings of the two lock sleeves are both conical, and the conicity is smaller than the self-locking angle.

In order to achieve the above object, in another aspect of the present invention, there is provided 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 a further improvement of the invention, the transverse two 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, and 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, and the three parts 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.

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

As a further improvement of the invention, 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.

As a further improvement of the invention, the middle part of the prefabricated sleeper plate or the prefabricated track plate is provided with a lightening hole, and the longitudinal two ends of the prefabricated sleeper plate or the prefabricated track plate are provided with notches.

As a further improvement of the invention, cover plates are arranged on the lightening holes and the notches to form a flat evacuation channel.

As a further development of the invention, the lower rail base is provided with a drainage gutter along its longitudinal direction.

As a further improvement of the invention, the two sides of the long plate unit are provided with first limiting structures, or the plate is provided with second limiting structures.

As a further improvement of the invention, plate gaps are arranged between a plurality of adjacent track units, and a third limiting structure is arranged in part or all of the plate gaps.

As a further improvement of the invention, 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.

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 slab type or track slab type ballastless track structure is simple in connecting structure, only comprises the split type connecting sleeve and the exposed reinforcing steel bars, adjacent sleeper slabs or track slabs 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 slabs or the track slabs can be prefabricated through vertical formwork.

(2) The longitudinal connecting structure of the assembled sleeper plate type or track plate type ballastless track structure is simple and convenient in manufacturing method, the adjacent sleeper plates or track plates are connected in advance through the split type connecting 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 slab type or track slab type ballastless track structure, the sleeper slab or track slab is ensured to be on the same horizontal plane by only laying the prefabricated sleeper slab or track slab in place, installing the split type connecting sleeve and pouring the filling material at one time in site construction, and the site construction speed is high.

(4) According to the assembled sleeper plate type or track plate type ballastless track structure, a plurality of prefabricated sleeper plates or prefabricated track plates which can be correspondingly assembled and connected are arranged at intervals along the track direction on the basis of the lower part of the track, longitudinal connecting structures are correspondingly arranged between two adjacent prefabricated sleeper plates or prefabricated track plates to be correspondingly matched and connected, concrete is poured in a connecting area, so that 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 ensured, and the assembly precision and the reliability of the ballastless track structure are improved;

(5) according to the fabricated sleeper plate type or track plate type ballastless track structure, the limiting members are correspondingly arranged in the spacing areas between the prefabricated sleeper plates or the prefabricated track plates, the longitudinal connecting structures and the limiting members are correspondingly cast in situ concrete, the limiting members and the longitudinal connecting structures are simultaneously wrapped in the concrete structure, and then the prefabricated sleeper plates or the prefabricated track plates and the lower part of the track form an integral structure, so that the simultaneous connection and limiting of the prefabricated sleeper plates or the prefabricated track plates are effectively realized, the direct hard connection in the existing sleeper plate connection process is avoided, the connection precision and reliability of the sleeper plates are ensured, the connection setting time of the sleeper plates is shortened, the setting efficiency of the ballastless track structure is improved, and the setting cost of the ballastless track structure is reduced;

(6) according to the assembled sleeper plate type or track plate type ballastless track structure, the longitudinal connecting structure and the limiting member can be respectively arranged in a pre-buried steel bar embedding mode, the arrangement mode is simple, the connection is simple and convenient, the arrangement efficiency of the ballastless track structure can be further improved, the construction period is shortened, the longitudinal connecting structure and the limiting member are simultaneously coated by cast-in-place concrete, an integral connecting-limiting structure is formed, the stability of the structure is effectively improved, the connecting and limiting precision is ensured, and the application stability of the ballastless track structure is improved;

(7) according to the assembled sleeper plate type or track plate type ballastless track structure, the lightening holes are formed in the middle of the sleeper plate, and/or the notches are correspondingly formed in the two sides of the sleeper plate, so that the frame plate is formed, the weight of the sleeper plate can be effectively lightened, the difficulty in transporting and laying the sleeper plate is reduced, materials are saved, the assembled sleeper plate type or track plate type ballastless track structure can correspond to the drainage ditch on the lower foundation of the track, the cleaning of sundries in the drainage ditch is facilitated, the drainage function of the drainage ditch can be quickly inspected and maintained, and the application convenience of the ballastless track structure is improved;

(8) the assembled sleeper plate type or track plate type ballastless track structure is formed by correspondingly connecting a plurality of prefabricated sleeper plates in series along the track direction, the plate surfaces of the sleeper plates are respectively horizontal, and after lightening holes and gaps are formed in the prefabricated sleeper plates, cover plates are respectively arranged corresponding to the lightening holes and the gaps, so that the upper end surfaces of the lightening holes and the gaps can be covered, the horizontal area between two steel rails of the ballastless track structure is ensured, personnel can be conveniently evacuated in emergency, the inconvenience in personnel walking caused by the end surface protruding structure arranged on the existing ballastless track unit plate due to connection requirements is avoided, the ballastless track structure can be more effectively suitable for the application of occasions such as subways and the like, and the safety evacuation requirement of the ballastless track is met;

(9) the assembled sleeper slab or track slab ballastless track structure is formed by correspondingly assembling a plurality of prefabricated sleeper slabs or prefabricated track slabs, 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 slabs or the prefabricated track slabs at the position, so that the prefabricated sleeper slabs or the prefabricated track slabs at the defect position can be replaced or adjusted, and the maintenance time and the maintenance cost of a ballastless track are obviously reduced;

(10) according to the assembled sleeper plate type or track plate type ballastless track structure, the prefabricated sleeper plates or the prefabricated track plates with certain lengths are arranged and assembled into long plate units, the sleeper plates or the track plates with different lengths and specifications can be adopted according to different use areas, and the prefabricated sleeper plates or the prefabricated track plates are set as short plates, so that the curve adaptability of the prefabricated sleeper plates or the prefabricated track plates can be further improved, the types and the number of non-standard plates and curve plates are reduced, the prefabrication cost of the sleeper plates or the track plates is reduced, the economy of the ballastless track structure is improved, and the later-stage laying fine adjustment is facilitated;

(11) according to the assembled sleeper slab type or track slab type ballastless track structure, after a plurality of prefabricated sleeper slabs or prefabricated track slabs are assembled into long slab units, limiting structures are correspondingly arranged between adjacent long slab units, or limiting structures are arranged on two sides of the long slab units, or limiting structures are arranged on the slabs of part or all of the prefabricated sleeper slabs or the prefabricated track slabs in the long slab units, so that accurate limiting of each long slab unit can be realized, the stability and the accuracy of the arrangement of the long slab units are ensured, and the application accuracy of the ballastless track structure is improved;

(12) the assembled sleeper plate type or track plate type ballastless track structure is simple in structure and simple and convenient in assembling method, the ballastless track structure can be quickly assembled, the connection and limiting precision of the sleeper plate or track plate is high, the reliability is high, the track assembling efficiency is high, the setting period is short, the setting cost of the ballastless track structure is effectively reduced, the material waste is reduced, the service life of the track is prolonged, and the assembled sleeper plate type or track plate type ballastless track structure has very important popularization and application values.

Drawings

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

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

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

fig. 5 is a plan view of a longitudinal connecting structure of the fabricated sleeper plate type or track plate type ballastless track structure according to the embodiment of the 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 invention;

in all the figures, the same reference numerals denote the same features, in particular: 1. the method comprises the following steps of prefabricating a sleeper slab, 101, 102, longitudinal reinforcements, 103, lightening holes, 104, split type connecting sleeves, 1041, semicircular sleeves, 1042, locking sleeves, 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 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 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, further preferably, in the preferred embodiment, longitudinal rebars 102 are embedded in two adjacent precast sleeper slabs 1 and extend out of the end faces, the two precast sleeper slabs are spaced from another matched longitudinal rebar 102, and the two longitudinal rebars 102 are longitudinally connected through a split-type connecting sleeve 104; each split type connecting sleeve 104 comprises two semicircular sleeves 1041 and two locking sleeves 1042, wherein the inner rings of the two semicircular sleeves 1041 are provided with threads, the two semicircular sleeves are buckled at the butt joint ends of the two longitudinal steel bars 102 and are meshed and matched, and the two locking sleeves 1042 are respectively sleeved at the two ends of the outer rings of the two buckled semicircular sleeves 1041 to be locked. Preferably, the outer rings of the two ends of the two semicircular sleeves 1041 and the inner rings of the two locking sleeves 1042 are both tapered, and the taper is smaller than the self-locking angle. Preferably, the outer rings of the two ends of the two semicircular sleeves 1041 and the inner rings of the two lock sleeves 1042 are further provided with mutually matched meshing threads.

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 105 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 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 side surfaces of the two prefabricated sleeper slabs 1 are respectively aligned, and then correspondingly arranging the longitudinal steel bars in each aligned set of 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.

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 split type connecting 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 assembled sleeper plate type or track plate type ballastless track structure and the assembling method have the advantages that the ballastless track is simple in structure and simple and convenient to assemble, the ballastless track structure is set to be in a mode that the plurality of sleeper plates are assembled with one another, the ballastless track structure is rapidly assembled, and the assembling method 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 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 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 (10)

1. The utility model provides a longitudinal connection structure of assembled sleeper board formula or track plate formula ballastless track structure which 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 a split type connecting sleeve;

every split type connecting sleeve includes two semi-circular sleeves and two lock sleeves, and two semi-circular sleeve inner circles are equipped with the screw thread, and the lock is in butt joint department and the interlock matching of two longitudinal reinforcement, and two lock sleeves overlap respectively and establish two semi-circular sleeve outer lane both ends of lock and lock.

2. The longitudinal connection structure of an assembled sleeper plate or track plate ballastless track structure as claimed in claim 1, wherein:

the outer rings at the two ends of the two semicircular sleeves and the inner rings of the two lock sleeves are conical, and the conical degrees are smaller than the self-locking angle.

3. The utility model provides a board-like or board-like ballastless track structure of assembled sleeper which characterized in that:

longitudinal connecting structures comprising prefabricated sleeper slabs or prefabricated track slabs, cast-in-place layers, track lower foundations, connecting and filling parts and the fabricated sleeper slab or track slab 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 sleeper-slab or track-slab 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 sleeper-slab or track-slab 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 sleeper-slab or track-slab 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 sleeper-slab or track-slab 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 sleeper-slab or track-slab ballastless track structure of claim 6, wherein:

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

9. The fabricated sleeper-slab or track-slab 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 sleeper-slab or track-slab 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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