阅读说明：本技术 连续式无砟轨道及其施工方法 (Continuous ballastless track and construction method thereof ) 是由 李秋义 赵虎 刘学文 杨国涛 杨怀志 朱彬 吴欢 张世杰 谷永磊 于 2020-12-29 设计创作，主要内容包括：本申请实施例提供一种连续式无砟轨道及其施工方法,连续式无砟轨道包括底座板、叠置在底座板上的调整层、叠置在调整层上的预制轨道板、连接件以及填充件,多个预制轨道板沿纵向间隔设置,预制轨道板包括板体和设置于板体内的预应力筋,相邻的两个板体之间具有接缝,预应力筋的预留端沿纵向伸出板体；连接件连接相邻的两个预制轨道板的预应力筋的预留端；弹性填充件填充接缝；在相邻的两个板体相互靠近或相互远离的作用力下,弹性填充件能够发生弹性形变以抵消部分作用力,改善接缝处板体的受力特性,避免发生板体在上下方向上拱变形过大、材料挤溃等风险。(The embodiment of the application provides a continuous ballastless track and a construction method thereof, the continuous ballastless track comprises a base plate, an adjusting layer superposed on the base plate, prefabricated track plates superposed on the adjusting layer, a connecting piece and a filling piece, wherein the plurality of prefabricated track plates are arranged at intervals along the longitudinal direction, each prefabricated track plate comprises a plate body and a prestressed tendon arranged in the plate body, a joint is arranged between every two adjacent plate bodies, and a reserved end of the prestressed tendon longitudinally extends out of the plate body; the connecting piece is connected with the reserved ends of the prestressed tendons of the two adjacent prefabricated track slabs; an elastic filler fills the seam; under the effort that two adjacent plate bodys are close to each other or keep away from each other, elastic deformation can take place for the elastic filling piece in order to offset some effort, improves the atress characteristic of seam department plate body, avoids taking place the plate body and encircles risks such as deformation is too big, the material is crowded ulcerate in the upper and lower direction.)

1. A continuous ballastless track, comprising:

a base plate;

an adjustment layer superposed on the base plate;

the prefabricated track slabs are superposed on the adjusting layer, a plurality of prefabricated track slabs are arranged at intervals along the longitudinal direction, each prefabricated track slab comprises slab bodies and prestressed tendons arranged in the slab bodies, a joint is arranged between every two adjacent slab bodies, and the reserved ends of the prestressed tendons extend out of the slab bodies along the longitudinal direction;

the connecting piece is used for connecting the reserved ends of the two adjacent prefabricated track plates; and

an elastic filling member filling the seam.

2. The continuous ballastless track of claim 1, wherein the continuous ballastless track comprises fixing members inserted into the prefabricated track slab, the adjusting layer and the base plate, and the prefabricated track slab is provided with a plurality of the fixing members at both ends in the longitudinal direction.

3. The continuous ballastless track of claim 2, wherein the two ends of the prefabricated track slab along the longitudinal direction are respectively provided with 4-8 fixing pieces; and/or the presence of a gas in the gas,

the fixing piece is an embedded chemical anchoring pin.

4. The continuous ballastless track of claim 1, wherein the connecting member comprises a first connecting body and a second connecting body respectively connected to the reserved ends of the tendons of two adjacent prefabricated track slabs;

under the action force of the mutual approaching of the two adjacent plate bodies, the first connecting body and the second connecting body approach to each other; under the action force of mutually far away two adjacent plate bodies, the first connecting body and the second connecting body are kept relatively still.

5. The continuous ballastless track of claim 4, wherein one of the first connecting body and the second connecting body is formed with a sliding groove, and the other of the first connecting body and the second connecting body is provided with a sliding rod, the sliding groove extends along the longitudinal direction, and the sliding rod extends into the sliding groove;

under the action force of mutual approaching of two adjacent plate bodies, the sliding rod slides along the sliding groove; under the action force that two adjacent plate bodies are far away from each other, the sliding rod is abutted to the groove wall of the sliding groove.

6. The continuous ballastless track of claim 4, wherein a portion of the first connecting body and a portion of the second connecting body are stacked in an up-down direction, sliding holes extending in the longitudinal direction are formed in the overlapped portions of the first connecting body and the second connecting body, and the connecting member comprises a pin shaft inserted into the two sliding holes;

under the action force that two adjacent plate bodies are close to each other, the pin shaft slides along the two sliding holes; under the action force that two adjacent plate bodies are far away from each other, the pin shaft is abutted to the hole walls of the two sliding holes.

7. The continuous ballastless track of any one of claims 1 to 6, wherein the continuous ballastless track comprises a sealing member for sealing a gap between the elastic filling member and the slab body; and/or the presence of a gas in the gas,

the end surface of the plate body along the longitudinal direction is a plane; and/or the presence of a gas in the gas,

filling the seams with an elastomeric engineering material to form the elastomeric filling.

8. A construction method of a continuous ballastless track is characterized by comprising the following steps:

forming a base plate;

a plurality of prefabricated track slabs are arranged on the base plate at intervals along the longitudinal direction, each prefabricated track slab comprises a slab body and a prestressed tendon arranged in the slab body, the reserved end of each prestressed tendon extends out of the slab body along the longitudinal direction, and a joint is arranged between every two adjacent slab bodies;

arranging an adjusting layer between the base plate and the prefabricated track plate;

the connecting piece is connected with the reserved ends of the prestressed tendons of the two adjacent prefabricated track slabs;

an elastomeric filling fills the seam.

9. The construction method according to claim 8, wherein after the plurality of prefabricated rail plates are provided on the foundation plate at intervals in the longitudinal direction, the construction method comprises:

and fixing pieces are arranged at two end parts of the prefabricated track slab along the longitudinal direction, penetrate through the prefabricated track slab and the adjusting layer and extend into the base plate.

10. The construction method according to claim 8, wherein after the elastic filling member fills the joint, the construction method comprises: the sealing piece seals the gap between the elastic filling piece and the plate body.

11. The construction method according to claim 8, wherein before the connecting member connects the reserved ends of the tendons of two adjacent precast track slabs, the construction method comprises: and flattening the end surface of the plate body along the longitudinal direction so as to enable the end surface of the plate body along the longitudinal direction to be a plane.

Technical Field

The application relates to the technical field of ballastless tracks, in particular to a continuous ballastless track and a construction method thereof.

Background

The continuous ballastless track in the prior art comprises a base plate, an adjusting layer and prefabricated track plates which are sequentially overlapped from bottom to top, wherein the plurality of prefabricated track plates are longitudinally arranged, each prefabricated track plate comprises a plate body and a reserved end which longitudinally extends out of the plate body, and the reserved ends of the prestressed ribs of two adjacent plate bodies are connected through a fixed locking piece to form the continuous ballastless track. The continuous ballastless track is continuously paved in the longitudinal direction, the temperature effect is very obvious, and the risk of overlarge arch deformation of the plate body close to the joint in the up-down direction exists, so that the driving quality is influenced.

Disclosure of Invention

In view of this, the present application provides a continuous ballastless track and a construction method thereof, which are expected to reduce a risk that a plate body near a joint deforms too much in an up-down direction.

An aspect of the present application provides a continuous ballastless track, including:

a base plate;

an adjustment layer superposed on the base plate;

the prefabricated track slabs are superposed on the adjusting layer, a plurality of prefabricated track slabs are arranged at intervals along the longitudinal direction, each prefabricated track slab comprises slab bodies and prestressed tendons arranged in the slab bodies, a joint is arranged between every two adjacent slab bodies, and the reserved ends of the prestressed tendons extend out of the slab bodies along the longitudinal direction;

the connecting piece is used for connecting the reserved ends of the two adjacent prefabricated track plates; and

an elastic filling member filling the seam.

In some embodiments, the continuous ballastless track includes fixing members inserted into the prefabricated track slab, the adjusting layer and the base plate, and a plurality of the fixing members are disposed at both ends of the prefabricated track slab along the longitudinal direction.

In some embodiments, 4 to 8 fixing parts are respectively arranged at two ends of the prefabricated track slab along the longitudinal direction; and/or the presence of a gas in the gas,

the fixing piece is an embedded chemical anchoring pin.

In some embodiments, the connecting member includes a first connecting body and a second connecting body respectively connected to the reserved ends of the tendons of two adjacent prefabricated track slabs;

under the action force of the mutual approaching of the two adjacent plate bodies, the first connecting body and the second connecting body approach to each other; under the action force of mutually far away two adjacent plate bodies, the first connecting body and the second connecting body are kept relatively still.

In some embodiments, one of the first connecting body and the second connecting body is formed with a sliding groove, and the other of the first connecting body and the second connecting body is provided with a sliding rod, the sliding groove extends along the longitudinal direction, and the sliding rod extends into the sliding groove;

under the action force of mutual approaching of two adjacent plate bodies, the sliding rod slides along the sliding groove; under the action force that two adjacent plate bodies are far away from each other, the sliding rod is abutted to the groove wall of the sliding groove.

In some embodiments, a portion of the first connecting body and a portion of the second connecting body are overlapped in an up-down direction, sliding holes extending in the longitudinal direction are formed in the overlapped portions of the first connecting body and the second connecting body, and the connecting member includes a pin shaft inserted into the two sliding holes;

under the action force that two adjacent plate bodies are close to each other, the pin shaft slides along the two sliding holes; under the action force that two adjacent plate bodies are far away from each other, the pin shaft is abutted to the hole walls of the two sliding holes.

In some embodiments, the continuous ballastless track includes a closure that closes a gap between the elastomeric filler and the slab; and/or the presence of a gas in the gas,

the end surface of the plate body along the longitudinal direction is a plane; and/or the presence of a gas in the gas,

filling the seams with an elastomeric engineering material to form the elastomeric filling.

Another aspect of the embodiment of the present application provides a method for constructing a continuous ballastless track, including:

forming a base plate;

a plurality of prefabricated track slabs are arranged on the base plate at intervals along the longitudinal direction, each prefabricated track slab comprises a slab body and a prestressed tendon arranged in the slab body, the reserved end of each prestressed tendon extends out of the slab body along the longitudinal direction, and a joint is arranged between every two adjacent slab bodies;

arranging an adjusting layer between the base plate and the prefabricated track plate;

the connecting piece is connected with the reserved ends of the prestressed tendons of the two adjacent prefabricated track slabs;

an elastomeric filling fills the seam.

In some embodiments, after the plurality of prefabricated track slabs are arranged on the base plate at intervals along the longitudinal direction, the construction method includes:

and fixing pieces are arranged at two end parts of the prefabricated track slab along the longitudinal direction, penetrate through the prefabricated track slab and the adjusting layer and extend into the base plate.

In some embodiments, after the elastic filler fills the joint, the construction method comprises: the sealing piece seals the gap between the elastic filling piece and the plate body.

In some embodiments, before the connecting member connects the reserved ends of the tendons of two adjacent prefabricated track slabs, the construction method includes: and flattening the end surface of the plate body along the longitudinal direction so as to enable the end surface of the plate body along the longitudinal direction to be a plane.

According to the continuous ballastless track provided by the embodiment of the application, the connection between two adjacent prefabricated track boards is strengthened by the connecting piece and the elastic filling piece; the temperature or the travelling crane generates longitudinal stress on the plate bodies, the connecting piece and the elastic filling piece are extruded under the action force of the mutual approach of the two adjacent plate bodies, and the elastic filling piece generates elastic deformation and is converted into internal energy so as to counteract the partial action force of the mutual approach of the two adjacent plate bodies; under the action force of the two adjacent plate bodies which are far away from each other, the connecting piece and the elastic filling piece are stretched, and the elastic filling piece generates elastic deformation and is converted into internal energy so as to counteract the partial action force of the two adjacent plate bodies which are far away from each other; therefore, under the effort that two adjacent plate bodys are close to each other or keep away from each other, elastic deformation can take place for the elastic filling piece in order to offset some effort to utilize elastic deformation of elastic filling piece to reduce the influence of temperature or driving production longitudinal stress to the plate body, improve the atress characteristic of seam department plate body, effectively release too big effort, avoid taking place the plate body and arch the deformation in the upper and lower direction too big, risk such as material conquassation, improve the stability of track board. The construction method of the continuous ballastless track provided by the embodiment of the application can form the continuous ballastless track, and has the same beneficial effects as the continuous ballastless track.

Drawings

Fig. 1 is a schematic structural diagram of a continuous ballastless track according to an embodiment of the present application, wherein an elastic filler is not shown;

fig. 2 is a schematic structural diagram of another continuous ballastless track according to an embodiment of the present application;

fig. 3 is a flow chart of a construction method of a continuous ballastless track in an embodiment of the present application.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the present application, the longitudinal direction refers to the extending direction of the continuous ballastless track, and the longitudinal direction and the transverse direction are perpendicular to each other, and the "longitudinal direction", "transverse direction", "upper direction" and "lower direction" or position relationship refers to the orientation or position relationship shown in the normal use of the continuous ballastless track, such as the orientation or position relationship shown in fig. 1, it should be understood that these orientation terms are only used for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or the element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore, cannot be understood as limiting the present application.

Referring to fig. 1 and 2, in one aspect, the present embodiment provides a continuous ballastless track, where the continuous ballastless track includes a base plate, an adjustment layer stacked on the base plate, prefabricated track boards 10 stacked on the adjustment layer, a connecting member 50, and a filling member, where a plurality of prefabricated track boards 10 are arranged at intervals in a longitudinal direction, each prefabricated track board 10 includes a board body 11 and a tendon arranged in the board body 11, a seam 100a is formed between two adjacent board bodies 11, and a reserved end of the tendon extends out of the board body 11 in the longitudinal direction; the connecting piece 50 connects the reserved ends of the prestressed tendons of two adjacent prefabricated track slabs 10; the elastic filling member 20 fills the seam 100 a.

According to the continuous ballastless track provided by the embodiment of the application, the connection between two adjacent prefabricated track slabs 10 is strengthened by the connecting piece 50 and the elastic filling piece 20; the temperature or the crane generates longitudinal stress on the plate body 11, and in one instance, the plate body 11 may be elongated in the longitudinal direction, so that the elongated plate body 11 is relatively close to the other plate body 11, it being understood that one plate body 11 of two adjacent plate bodies 11 may be elongated, and that both plate bodies 11 of two adjacent plate bodies 11 may be elongated; the two adjacent plate bodies 11 approach each other, and under the action force of the two adjacent plate bodies 11 approaching each other, the connecting member 50 and the elastic filling member 20 are squeezed, and the elastic filling member 20 is elastically deformed and converted into internal energy to counteract the part of the action force of the two adjacent plate bodies 11 approaching each other; in another case, the plate 11 may be longitudinally shortened, it is understood that one plate 11 of two adjacent plates 11 may be shortened, or both the two plates 11 of two adjacent plates 11 may be shortened, so that the two adjacent plates 11 are away from each other when the shortened plate 11 is relatively away from the other plate 11, the connecting member 50 and the elastic filling member 20 are stretched under the action force of the two adjacent plates 11, and the elastic filling member 20 is elastically deformed and converted into internal energy to counteract the partial action force of the two adjacent plates 11 away from each other; therefore, under the effort that two adjacent plate bodys 11 are close to each other or keep away from each other, elastic deformation can take place for elastic filling 20 in order to offset some effort to utilize elastic deformation of elastic filling 20 to reduce the influence of temperature or driving production longitudinal stress to plate body 11, improve the atress characteristic of seam department plate body 11, effectively release too big effort, avoid taking place plate body 11 and arch the deformation in the upper and lower direction too big, risk such as material crowded ulcerate, improve the stability of track board.

The foundation plate is used to support upper members such as an adjustment layer for further fine adjustment of the position of the precast track slab 10, and the precast track slab 10 for supporting a rail.

In an embodiment, referring to fig. 2, the continuous ballastless track includes fixing members 30 inserted into the prefabricated track slab 10, the adjusting layer and the base plate, and a plurality of fixing members 30 are disposed at both ends of the prefabricated track slab 10 along the longitudinal direction. The fixing members 30 are used for reinforcing the connection among the prefabricated track slab 10, the adjusting layer and the base plate, reinforcing the shape and position control of the prefabricated track slab 10, limiting the displacement and deformation of the prefabricated track slab 10 along the longitudinal end part to a certain extent, and improving the overall stability of the continuous ballastless track.

In one embodiment, referring to fig. 2, two longitudinal ends of the prefabricated track slab 10 are respectively provided with 4 to 8 fixing members 30. Illustratively, the two ends of the prefabricated track slab 10 in the longitudinal direction are respectively provided with 4 fixing pieces 30, 6 fixing pieces 30 or 8 fixing pieces 30, etc. So, prefabricated track board 10 sets up the mounting 30 of reasonable quantity respectively along fore-and-aft two tip, not only can strengthen the connection between prefabricated track board 10, adjustment layer and the bed plate through mounting 30, can also avoid too much mounting 30 to implant prefabricated track board 10 and bed plate, destroys structural integrity. The above is merely an example, and the number of the fixing pieces 30 can be increased or decreased according to the actual state of the on-site continuous ballastless track.

In one embodiment, referring to fig. 2, the fixing members 30 disposed at the longitudinal ends of the prefabricated track slab 10 are symmetrically distributed along the longitudinal center line of the slab 11. So designed as to further improve the force characteristics of the panel 11 at the joint.

In one embodiment, referring to fig. 2, the fixing member 30 is an embedded chemical anchoring pin.

In one embodiment, the connecting member 50 includes a first connecting body and a second connecting body respectively connected to the reserved ends of the tendons of two adjacent prefabricated track slabs 10; that is, the first connection body is connected, for example, screwed, with the reserved end of the tendon of one of the prefabricated track slabs 10; the second connecting body is connected with the reserved end of the prestressed tendon of another prefabricated track slab 10, for example, in a threaded connection; under the action force of the two adjacent plate bodies 11 approaching each other, the first connecting body and the second connecting body approach each other; therefore, the plate body 11 is convenient to have an elongated space in the longitudinal direction, so that the plate body 11 is prevented from being extruded and warped to the central area thereof, and risks of overlarge upward arching deformation, material extrusion and collapse and the like of the plate body in the up-down direction are further avoided; the first connecting body and the second connecting body are kept relatively immovable under the action of the mutual distance between the two adjacent plate bodies 11. Therefore, the connection between the plate bodies 11 is enhanced, and the structure of the continuous ballastless track is more stable.

In one embodiment, one of the first connecting body and the second connecting body is provided with a sliding groove, the other of the first connecting body and the second connecting body is provided with a sliding rod, the sliding groove extends along the longitudinal direction, and the sliding rod extends into the sliding groove; under the action force of the two adjacent plate bodies 11 approaching each other, the sliding rod slides along the sliding groove; under the action force that two adjacent plate bodies 11 are far away from each other, the sliding rod is abutted against the groove wall of the sliding groove.

The panels 11 may be elongated in the longitudinal direction, such that the elongated panel 11 is relatively close to the other panel 11, it being understood that one panel 11 of two adjacent panels 11 may be elongated, or both panels 11 of two adjacent panels 11 may be elongated; the two adjacent plate bodies 11 are close to each other, and under the action force of the two adjacent plate bodies 11, the sliding rod slides along the sliding groove, so that the plate bodies 11 have an elongated space in the longitudinal direction, and therefore the plate bodies 11 are prevented from being extruded and warped to the central areas thereof, and risks such as overlarge deformation and material crushing in an upward and downward direction are further avoided; the panels 11 may be longitudinally shortened such that the elongated panel 11 is relatively far from the other panel 11, it being understood that one panel 11 of two adjacent panels 11 may be shortened, or both panels 11 of two adjacent panels 11 may be shortened; then two adjacent plate bodies 11 keep away from each other, and under the effort that two adjacent plate bodies 11 kept away from each other, the cell wall butt of slide bar and spout, first connector and second connector keep motionless relatively to the restriction plate body 11 further shortens, thereby makes continuous type ballastless track structure more stable.

In one embodiment, the first connecting body and the second connecting body are overlapped in the up-down direction, the overlapped parts of the first connecting body and the second connecting body are both formed with sliding holes extending in the longitudinal direction, and the connecting member 50 includes a pin shaft penetrating through the two sliding holes; under the action force of the two adjacent plate bodies 11 approaching each other, the pin shaft slides along the two sliding holes; under the mutual acting force of keeping away from of two adjacent plate bodies 11, the pin shaft is abutted against the hole walls of the two sliding holes.

The plate bodies 11 may extend longitudinally, so that the extended plate body 11 is relatively close to another plate body 11, the two adjacent plate bodies 11 are close to each other, the pin shaft and the sliding hole move relatively under the action force of the two adjacent plate bodies 11, and the pin shaft slides along the two sliding holes, so that the plate bodies 11 have an extended space longitudinally, and thus the plate bodies 11 are prevented from being extruded and warped to the central area thereof, and risks such as excessive deformation and material crushing in an upward and downward direction are further avoided; the plate body 11 probably shortens along vertically, so, another plate body 11 is kept away from relatively to the plate body 11 of extension, then two adjacent plate bodies 11 keep away from each other, under the effort of keeping away from each other at two adjacent plate bodies 11, the round pin axle and the pore wall butt of two sliding holes, first connector and second connector keep motionless relatively to restriction plate body 11 further shortens, thereby makes continuous type ballastless track structure more stable.

In one embodiment, referring to fig. 2, the continuous ballastless track includes a closing member 40 for closing a gap between the elastic filling member and the slab. The sealing member 40 is used to seal the gap between the elastic filling member 20 and the plate body 11, so as to prevent the gap between the elastic filling member 20 and the plate body 11 from being a fluid passage of liquid such as water.

In one embodiment, referring to fig. 1, an end surface 11a of the plate 11 along the longitudinal direction is a plane. Because the end surface 11a of the plate body 11 along the longitudinal direction is a plane, the dimension of the two adjacent plate bodies 11 along the longitudinal direction is consistent, so that the elastic filling piece 20 can fill the joint 100a conveniently, and the construction is more convenient; on the other hand, the plate body 11 is more symmetrical in structure, the stress of the plate body 11 is more uniform, the stress characteristic of the plate body 11 is improved, and the structural stability is improved.

In one embodiment, referring to fig. 1 and 2, the seam 100a is filled with an elastic engineering material to form the elastic filling member 20.

Illustratively, in one embodiment, the resilient engineering material comprises polyurethane and/or resilient concrete.

In an exemplary embodiment, the foundation slab is formed by cast-in-place construction at a construction site, and the prefabricated track slab 10 is pre-formed and then transported to the construction site. On a construction site, a base plate is formed by cast-in-place construction, the prefabricated track plate 10 is arranged on the base plate, mortar is poured between the base plate and the prefabricated track plate 10 through grouting holes in the prefabricated track plate 10 to form an adjusting layer, the number of prestressed tendons of the prefabricated track plate 10 is six, and the six prestressed tendons are arranged at intervals along the transverse direction. The above is merely an example, the number of the tendons may be more than six, or less than six, and the embodiments of the present application are not limited.

In some embodiments, the base plate is formed of plain concrete. In other embodiments, the foundation plate is a reinforced concrete structure.

In some embodiments, the adjustment layer is formed from a CA (cement alpha) mortar layer. The CA mortar layer comprises cement, asphalt emulsion, sand and the like.

Referring to fig. 3, another aspect of the embodiment of the present application provides a method for constructing a continuous ballastless track, where the method includes:

s110: forming a base plate;

s120: a plurality of prefabricated track slabs are arranged on the base plate at intervals along the longitudinal direction, each prefabricated track slab comprises a slab body and a prestressed tendon arranged in the slab body, the reserved end of each prestressed tendon extends out of the slab body along the longitudinal direction, and a joint is arranged between every two adjacent slab bodies;

s130: arranging an adjusting layer between the base plate and the prefabricated track plate;

s140: the connecting piece is connected with the reserved ends of the prestressed tendons of the two adjacent prefabricated track slabs;

s150: an elastomeric filling fills the seam.

According to the construction method of the continuous ballastless track provided by the embodiment of the application, the connection between two adjacent prefabricated track boards 10 is strengthened by the connecting piece 50 and the elastic filling piece 20; the temperature or the crane generates longitudinal stress on the plate body 11, and in one instance, the plate body 11 may be elongated in the longitudinal direction, so that the elongated plate body 11 is relatively close to the other plate body 11, it being understood that one plate body 11 of two adjacent plate bodies 11 may be elongated, and that both plate bodies 11 of two adjacent plate bodies 11 may be elongated; the two adjacent plate bodies 11 approach each other, and under the action force of the two adjacent plate bodies 11 approaching each other, the connecting member 50 and the elastic filling member 20 are squeezed, and the elastic filling member 20 is elastically deformed and converted into internal energy to counteract the part of the action force of the two adjacent plate bodies 11 approaching each other; in another case, the plate 11 may be longitudinally shortened, it is understood that one plate 11 of two adjacent plates 11 may be shortened, or both the two plates 11 of two adjacent plates 11 may be shortened, so that the two adjacent plates 11 are away from each other when the shortened plate 11 is relatively away from the other plate 11, the connecting member 50 and the elastic filling member 20 are stretched under the action force of the two adjacent plates 11, and the elastic filling member 20 is elastically deformed and converted into internal energy to counteract the partial action force of the two adjacent plates 11 away from each other; therefore, under the effort that two adjacent plate bodys 11 are close to each other or keep away from each other, elastic deformation can take place for elastic filling 20 in order to offset some effort to utilize elastic deformation of elastic filling 20 to reduce the influence of temperature or driving production longitudinal stress to plate body 11, improve the atress characteristic of seam department plate body 11, effectively release too big effort, avoid taking place plate body 11 and arch the deformation in the upper and lower direction too big, risk such as material crowded ulcerate, improve the stability of track board.

Illustratively, when the prefabricated track slab is applied to a newly-built track, a foundation slab is formed in a cast-in-place manner in a construction site, and the prefabricated track slabs 10 are arranged on the foundation slab at intervals.

And arranging an adjusting layer between the base plate and the prefabricated track plate, wherein mortar is poured between the base plate and the prefabricated track plate 10 through a grouting hole in the prefabricated track plate 10 to form the adjusting layer.

In one embodiment, after the plurality of prefabricated track slabs are arranged on the base plate at intervals along the longitudinal direction, the construction method includes:

s160: and fixing pieces are arranged at two end parts of the prefabricated track slab along the longitudinal direction, penetrate through the prefabricated track slab and the adjusting layer and extend into the base plate.

The fixing members 30 are used for reinforcing the connection among the prefabricated track slab 10, the adjusting layer and the base plate, reinforcing the shape and position control of the prefabricated track slab 10, limiting the displacement and deformation of the prefabricated track slab 10 along the longitudinal end part to a certain extent, and improving the overall stability of the continuous ballastless track.

It should be noted that step S160 may precede step S140, and step S160 may follow step S140. Step S160 may precede step S150, and step S160 may follow step S150.

In one embodiment, the fastener 30 is an embedded chemical anchoring pin. The embedded chemical anchoring pin can be formed by drilling a mounting hole which penetrates through the prefabricated track slab 10 and the adjusting layer and extends into the base plate on the prefabricated track slab 10, arranging the anchoring pin in the mounting hole, and filling a gap in the mounting hole with a chemical reagent.

In one embodiment, after the elastic filling member fills the joint, the construction method includes:

s170: the sealing piece seals the gap between the elastic filling piece and the plate body.

Here, the sealing member 40 is used to seal the gap between the elastic filling member 20 and the plate body 11, so as to prevent the gap between the elastic filling member 20 and the plate body 11 from being a passage for liquid, such as water.

In one embodiment, before the connecting member connects the reserved ends of the tendons of two adjacent prefabricated track slabs, the construction method includes:

s180: and flattening the end surface of the plate body along the longitudinal direction so as to enable the end surface of the plate body along the longitudinal direction to be a plane.

Because the end surface 11a of the plate body 11 along the longitudinal direction is a plane, the dimension of the two adjacent plate bodies 11 along the longitudinal direction is consistent, so that the elastic filling piece 20 can fill the joint 100a conveniently, and the construction is more convenient; on the other hand, the plate body 11 is more symmetrical in structure, the stress of the plate body 11 is more uniform, the stress characteristic of the plate body 11 is improved, and the structural stability is improved.

Illustratively, excess structure in the longitudinal direction of the plate body 11 is chiseled off, and the end face 11a of the plate body 11 in the longitudinal direction is ground flat so that the end face 11a of the plate body 11 in the longitudinal direction is a flat face.

It should be noted that the base plate, the adjustment layer, the prefabricated track slab 10, the connecting member 50, the elastic filling member 20, the fixing member 30 and the closing member 40 in any one of the construction method embodiments of the present application may be made of corresponding structures and materials in any one of the continuous ballastless tracks of the present application, and are not described herein again.

The continuous ballastless track and the construction method thereof provided by the embodiment of the application can be used for not only building a new track but also an existing track. When the method is applied to an existing track, the structure at the joint of two adjacent prefabricated track slabs 10 needs to be removed, for example, the fixed locking piece at the reserved end of the tendon connecting the two adjacent prefabricated track slabs 10 is detached, and then the continuous ballastless track structure in any embodiment of the application and/or the construction method in any embodiment of the application are/is implemented. The continuous ballastless track and the construction method thereof provided by the embodiment of the application are particularly suitable for a continuous ballastless track of a roadbed section.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.