CN113550176B - External spacing module pin-connected panel track structure - Google Patents

Abstract

The invention discloses an external limiting module assembled track structure, which comprises: the base plate is formed by in-situ casting to form millimeter-scale precision of the top surface, or is prefabricated and formed in a factory, an adjusting layer is cast on the base in situ, or is replaced by novel materials such as asphalt, and is formed by pressing down the track plate in the in-situ casting process to form millimeter-scale precision of the top surface, the base plate is paved with a middle layer, track units which are sequentially distributed are paved on the middle layer, and each track unit comprises a prefabricated track plate module; a concave-convex embedded structure is also arranged between the two adjacent sets of track slab modules; the external limiting module assembled track structure further comprises two groups of limiting strips, the two groups of limiting strips are arranged on the two sides of the track slab module respectively, and each limiting strip is connected to the supporting foundation and abuts against the track slab module for limiting. In the structure of the invention, a plurality of modules are combined, the applicability is strong, the prefabricated modules are miniaturized and lightened, the production, the transportation and the installation are convenient, the structure is simple, the assembly method is simple and convenient, the assembly efficiency is high, and the replacement is easy.

Description

External spacing module pin-connected panel track structure

Technical Field

The invention relates to the technical field of rail transit, in particular to an external limiting module assembled rail structure.

Background

The development of the high-speed rail technology in China is from endless to strong, the technology changes from weak to strong, and through more than 20 years of continuous efforts, the technology becomes the most complete world high-speed rail system technology, the highest innovation capability, the longest operation mileage, the fastest operation speed and the largest building scale in China.

The ballastless track structure has become a main track structure type of a high-speed railway due to the advantages of high smoothness, high stability, less maintenance and the like, and the common structure comprises a track plate, a filling layer, a concrete base or a supporting layer. At present, except that the track plate is prefabricated in a factory, other parts of the slab ballastless track structure of the high-speed railway, such as a bed plate and a filling layer, are manufactured in a cast-in-place mode, and the track structure is constructed in a reverse method, namely, a concrete base or a supporting layer is poured firstly, then the filling layer is formed between the prefabricated track plate and the concrete base or the supporting layer through pouring and filling so as to connect the track plate and the concrete base or the supporting layer, then the track plate is finely adjusted firstly, and then a slab lower adjusting layer is poured. The vertical multilayer and longitudinal heterogeneous belt-shaped structure system has the characteristics of large difference of building material properties, multiple structural layers, complex service environment and the like, and has the following problems in the actual operation process:

firstly, the traditional construction method of the high-speed railway track structure has large workload of field wet operation, causes the problems of high precision control difficulty, poor quality stability, high construction cost and the like of the track structure, and easily causes hidden danger of construction quality;

secondly, the concrete base and the cement emulsified asphalt mortar layer/self-compacting concrete in the prefabricated plate type ballastless track are constructed on site, the construction efficiency is influenced by more working procedures, and the durability of the cement emulsified asphalt mortar layer is poor;

and thirdly, due to the structure and construction mode of the existing track structure, the track slab is difficult to maintain and repair, difficult to replace and high in maintenance cost.

In conclusion, because the research and development and the operation time of the ballastless track structure system in China are short, the traditional track form and the construction method are difficult to meet the construction requirements of track structures with high precision, few diseases, energy conservation, environmental protection and intellectualization, and the selection range of the completely independently innovated track structure form is limited. Therefore, a full-life design concept, intelligent construction, operation and maintenance technology and the like based on safe service are urgently needed, and the novel track structure and the construction technology research thereof are deeply developed to form a novel assembly type track structure with independent intellectual property rights and an intelligent construction complete technology thereof.

Disclosure of Invention

The invention provides an external limiting module assembled track structure, which is formed by assembling a plurality of modules into a track board by a rapid dry method, and solves the technical problems of large workload of field wet operation, poor quality stability, complex process, difficult maintenance and repair of the track structure, difficult replacement and the like of the conventional ballastless track structure.

The technical scheme adopted by the invention is as follows:

an external spacing module pin-connected panel track structure includes: the base plate is used for leveling an external limiting module assembled track structure, the base plate is cast on site on a support foundation and extends along the running direction of a train, a middle layer is paved on the base plate, track units which are sequentially arranged along the length direction of the middle layer are paved on the middle layer, each track unit comprises track plate modules which are sequentially arranged along the length direction, and the track plate modules are prefabricated and formed and are used for guiding and supporting the train; a concave-convex embedded structure is also arranged between the two adjacent groups of track slab modules and is used for elastically connecting the two adjacent groups of track slab modules into a whole along the longitudinal direction and limiting and adaptively correcting the connection of the two adjacent groups of track slab modules; external spacing module pin-connected panel track structure still including being used for carrying on two sets of spacing strips spacing along transversely to the track board module, the both sides of track board module are located to two sets of spacing strips to extend along the length direction of bed plate, each spacing strip is connected on supporting the basis and is realized track board module limit function.

Furthermore, the track plate module comprises track plates which are sequentially laid on the middle layer at intervals along the length direction of the middle layer, supporting steel rails which extend along the length direction of the middle layer and are parallelly laid above the track plates at intervals, and track bearing platforms which are sequentially laid on the upper surface of the track plates at intervals along the length direction of the track plates so as to support the supporting steel rails which are correspondingly arranged; the rail bearing platform is connected with a fastener group used for locking and fixing the corresponding supporting steel rail and the rail bearing platform.

Furthermore, the concave-convex embedded structure comprises an outward bulge and an inward groove which are respectively arranged on the connecting ends of the two adjacent track plates, and an elastic filling sheet used for elastically connecting the two adjacent track plates; the outward bulge and the inward groove are oppositely matched to form a concave-convex matching structure; the elastic filling piece is arranged between the connecting ends of the two adjacent track plates and is deformed and embedded between the concave-convex matching structures.

Furthermore, a group of concave-convex matching structures is arranged between two adjacent track plates, and outward bulges of the concave-convex matching structures are inserted into the oppositely arranged inward grooves along the running direction of the train; the elastic filling pieces are deformed and clamped between the concave-convex matching structures.

Furthermore, a plurality of groups of concave-convex matching structures are arranged between two adjacent track plates, and are sequentially arranged along the width direction of the track plates; a plurality of outward bulges of the plurality of groups of concave-convex matching structures are sequentially distributed on the connecting end of the first track plate, and a plurality of inward grooves of the plurality of groups of concave-convex matching structures are sequentially distributed on the connecting end of the adjacent second track plate; or a plurality of outward bulges of the multi-group concave-convex matching structure are respectively arranged on the connecting ends of the two adjacent track plates, and a plurality of inward grooves of the multi-group concave-convex matching structure are correspondingly arranged on the connecting ends of the two adjacent track plates; the elastic filling pieces are deformed and clamped among the groups of concave-convex matching structures.

Furthermore, the outward bulge is in one of a ladder shape, a triangle shape, a U shape and a swallow tail shape; the inward groove is in a shape matched with the outward bulge.

Furthermore, the elastic filling sheet is prepared from at least one of polyurethane, epoxy modified polyurethane and polyurethane modified epoxy materials.

Furthermore, the limiting strips comprise lateral stop blocks which are sequentially arranged at intervals along the length direction of the base plate; the lower extreme and the support basis of side direction dog are fixed, and it is spacing that the upper end lateral wall top of side direction dog supports the side of the track board that corresponds the setting, or the upper end of side direction dog compresses tightly the bed plate and supports the side of the track board that corresponds the setting spacing.

Furthermore, the external limiting module assembled track structure also comprises limiting baffle tables, wherein the limiting baffle tables are arranged between two adjacent sets of track slab modules and are alternately arranged with the concave-convex embedded structures along the length direction of the base plate; the limiting blocking platform is used for elastically limiting the track slab module in the longitudinal direction and the transverse direction, and the lower end of the limiting blocking platform is fixed with the base plate.

Further, the top surface of the base plate 6 is formed with millimeter-scale precision by cast-in-place; or the base plate 6 is prefabricated and molded in a factory, and a leveling adjustment layer is formed on the supporting base by casting in situ so as to form millimeter-level precision on the top surface of the base plate 6; or the base plate 6 is replaced by asphalt, high-performance concrete or the existing novel material, and is pressed down by the track plate to form millimeter-level precision of the top surface during cast-in-place.

The invention has the following beneficial effects:

in the external limiting module assembled track structure, the track slab modules are sequentially laid on the middle layer at intervals, and two adjacent groups of track slab modules are elastically connected into a whole along the longitudinal direction through the concave-convex embedded structure between the two track slab modules, so that the track slab modules have slippage in a certain longitudinal range to adapt to the change of temperature and load, the connected track slab modules are limited through connection, and the track slab modules can be subjected to adaptive fine adjustment and correction of the laying position or the service period according to the conditions of temperature and load through the elastic connection function of the concave-convex embedded structure, so that the installation and service precision of the track structure is improved, and the track structure is good in smoothness; on the other hand, the existing track structure adopting the lateral stop blocks realizes the longitudinal connection of the track slabs by utilizing the seam steel bars, in the structure, the track slab modules are in concave-convex fit and outer side limit structural mode, the track slab modules are mutually independent, the later-stage disassembly and assembly are quick and convenient, and the longitudinal connecting steel bars do not need to be cut, so that the structure has huge advantages compared with the existing structural form, and the adjacent track slab modules can be quickly installed and connected on site through concave-convex embedded structures, the track forming efficiency and quality are improved, the modularized and assembled forming mode is realized, and the development requirements of modern tracks are met.

In the external limiting module assembled track structure, the track unit is combined by multiple modules through the track plate modules, so that the applicability is strong, the track plate modules are designed in a standardized manner, produced in a factory and installed intelligently, the prefabricated modules are miniaturized and lightened, the production, stacking, transportation and installation are convenient, the track forming efficiency and quality are improved, a modularized and assembled forming mode is realized, the assembling method is simple and convenient, the assembling efficiency is high, and the development requirements of modern tracks are met; on the other hand, compared with the prior art, when the track slab is damaged in the operation process, the whole track slab is replaced or maintained, the damaged track slab module is only needed to be replaced or maintained, the rapid repair can be realized, the replacement is simple, the maintenance cost is low, the maintenance required period is short, and the labor intensity of workers is low.

Compared with the prior art that the smoothness of the whole top surface of the track structure is controlled by pouring the filling layer between the track plate and the base plate through site construction, in the external limiting module assembled track structure, the smoothness of the top surface of the base plate can be accurately controlled in the process of pouring the base plate, so that the smoothness of the whole top surface of the external limiting module assembled track structure is controlled; or the base plate is prefabricated and molded in a factory, and a leveling adjustment layer is formed on the supporting base by casting in situ so as to form millimeter-level precision of the top surface of the base plate; or the base plate is replaced by asphalt, high-performance concrete or the existing novel material, and the track plate is pressed down to form millimeter-level precision of the top surface during cast-in-place, so that the external limiting module assembled track structure is simple in fine adjustment and installation, high in installation precision, various in form and simple in construction process.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic three-dimensional structure diagram of an external limiting module assembly type track structure according to a preferred embodiment of the present invention;

FIG. 2 is a three-dimensional exploded schematic view of FIG. 1;

fig. 3 is a schematic three-dimensional structure diagram of the external limiting module assembled track structure in fig. 1 built on a roadbed;

fig. 4 is a schematic three-dimensional structure diagram of the external limiting module assembly type track structure in fig. 1 built on a bridge;

fig. 5 is a schematic three-dimensional structure diagram of the external limiting module assembly type track structure in fig. 1 built on a tunnel;

fig. 6 is a partially exploded view of a circular limit stop.

Description of the drawings

1. A steel rail; 2. a fastener group; 4. a track slab module; 401. a rail bearing platform; 402. a track plate; 403. outward bulge; 404. an elastic filling sheet; 5. an intermediate layer; 6. a base plate; 7. a limiting stop table; 701. an elastic connecting ring; 702. limiting a compression ring; 703. a damping connecting column; 704. connecting rod pieces; 8. a lateral stop block; 9. a roadbed; 10. a box girder; 11. a support; 12. a bridge pier; 13. and (4) tunneling.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

Referring to fig. 1 and 2, a preferred embodiment of the present invention provides an external limit module assembly type track structure, including: the base plate 6 plays a supporting role and is used for leveling the external limiting module assembled track structure, the base plate 6 is poured on site on a supporting basis and extends along the running direction of a train, the middle layer 5 which plays an isolating role and extends along the length direction of the base plate 6 is paved on the base plate 6, the track plate modules 4 which are sequentially arranged along the length direction of the middle layer 5 at intervals and are connected are paved on the middle layer 5, and the track plate modules 4 are prefabricated and formed and are used for guiding and supporting the train. Still be equipped with unsmooth looks between two sets of adjacent track board modules 4 and inlay the structure mutually, unsmooth looks inlays the structure and is used for making two sets of adjacent track board modules 4 along vertical elastic connection and becomes whole for carry out spacing and self-adaptation correction to the connection of two sets of adjacent track board modules 4. External spacing module pin-connected panel track structure is still including being used for carrying on two sets of spacing strips spacing to track board module 4 along transversely, and track board module 4's both sides are located to two sets of spacing strips to extend along the length direction of bed plate 6, it is spacing that each spacing strip is connected on supporting the basis and is pushed up to track board module 4.

Before constructing the external limiting module assembled track structure, firstly, prefabricating and forming each component structure of a track slab module 4 in a factory, assembling and connecting each component structure to form the track slab module 4, and then selecting a corresponding middle layer 5 according to a specific application scene, an isolation support condition and the like of the external limiting module assembled track structure; when the external limiting module assembled track structure is constructed, firstly, a base plate 6 laid on a supporting foundation is cast on site on the supporting foundation, meanwhile, in the process of casting the base plate 6, the smoothness of the top surface of the base plate 6 is accurately adjusted in real time according to the smoothness requirement of the top surface of the external limiting module assembled track structure, then, an intermediate layer 5 is laid and positioned on the cast base plate 6, track plate modules 4 are sequentially laid on the intermediate layer 5 at intervals, two adjacent groups of track plate modules 4 are connected into a whole in the longitudinal direction through a concave-convex embedded structure, and finally, limiting strips are cast on site on the supporting foundation on two sides of the base plate 6, so that the two limiting strips relatively abut against the track plate modules 4 to limit the track plate modules 4 in the transverse direction.

In the external limiting module assembled track structure, the track slab modules 4 are sequentially laid on the middle layer 5 at intervals, and two adjacent sets of track slab modules 4 are elastically connected into a whole along the longitudinal direction through the concave-convex embedded structure between the two track slab modules, so that the track slab modules 4 have slippage in a certain range along the longitudinal direction to adapt to the change of temperature and load, the connected track slab modules 4 are limited through connection, and the track slab modules 4 can be subjected to adaptive fine tuning and correction of the laying position or the service period according to the temperature and the load condition through the elastic connection function of the concave-convex embedded structure, so that the installation and service precision of the track structure are improved, and the smoothness of the track structure is good; on the other hand, the track structure adopting the lateral stop blocks and the longitudinal connection of the track slabs are realized by utilizing the seam steel bars, in the structure, the track slab modules 4 are in concave-convex fit and outer side limit structural mode, the track slab modules 4 are mutually independent, the later-stage disassembly and assembly are quick and convenient, and the longitudinal connecting steel bars do not need to be cut, so that the track slab structure has huge advantages compared with the existing structural form, the adjacent track slab modules 4 can be quickly installed and connected on site through concave-convex embedded structures, the track forming efficiency and quality are improved, the modularization and the assembly type forming mode is realized, and the development requirements of modern tracks are met.

In the external limiting module assembled track structure, a track unit is combined by a plurality of modules through the track plate modules 4, so that the applicability is strong, the track plate modules 4 are designed in a standardized way, produced in a factory and installed intelligently, the prefabricated modules are miniaturized and lightened, the production, stacking, transportation and installation are convenient, the track forming efficiency and quality are improved, a modularized and assembled forming mode is realized, the assembling method is simple and convenient, the assembling efficiency is high, and the development requirements of modern tracks are met; on the other hand, compared with the prior art, when the track slab is damaged in the operation process, the whole track slab is replaced or maintained, only the damaged track slab module 4 needs to be replaced or maintained, the rapid repair can be realized, the replacement is simple, the maintenance cost is low, the maintenance required period is short, and the labor intensity of workers is low.

Compared with the prior art that the smoothness of the whole top surface of the track structure is controlled by pouring the middle layer between the track slab module and the middle layer through site construction, in the external limiting module assembly type track structure, the smoothness of the top surface of the base slab 6 can be accurately controlled in the process of pouring the base slab 6, and further the smoothness of the whole top surface of the external limiting module assembly type track structure is controlled; or the base plate 6 is prefabricated and molded in a factory, and a leveling adjustment layer is formed on the supporting base by casting in situ so as to form millimeter-level precision of the top surface of the base plate; or the base plate 6 is replaced by asphalt, high-performance concrete or the existing novel material, and the track plate 402 is pressed down to form millimeter-level precision of the top surface during cast-in-place, so that the external limiting module assembly type track structure is simple in fine adjustment and installation, high in installation precision, various in form and simple in construction process.

Alternatively, as shown in fig. 2, the track plate module 4 includes track plates 402 sequentially laid on the intermediate layer 5 at intervals along the length direction of the intermediate layer 5, rails 1 extending along the length direction of the intermediate layer 5 and arranged above the track plates 402 at parallel intervals, and rail support bases 401 sequentially laid on the upper surface of the track plates 402 at intervals along the length direction of the track plates 402 to support the correspondingly arranged rails 1. The rail bearing platform 401 is connected with a fastener group 2 used for locking and fixing the corresponding steel rail 1 and the rail bearing platform 401. In the alternative, the track plate 402 and the track bearing platform 401 are prefabricated and molded by a factory, so that the processing is simple and the manufacturing precision is high. In the alternative, the number of the fastener groups 2 is two, and the two fastener groups 2 are respectively arranged on two sides of the steel rail 1; every group fastener 2 is including the spiral railway nail and the plain washer that are used for the straining rail, be used for preventing the spiral railway nail installation back pivoted bullet strip, an insulating block that is used for straining rail lower extreme edge, a gauge apron that is used for supporting rail 1 and rail platform 401 inner groovy, the rail lower bolster, the iron base plate, the elastic backing plate under the iron base plate, heighten backing plate and pre-buried sleeve under the iron base plate, spiral railway nail wears to establish the rail lower bolster, the iron base plate, the elastic backing plate under the iron base plate, screw into in the pre-buried sleeve of corresponding rail platform 401 under the iron base plate heightening backing plate, through insulating block and bullet strip straining rail.

Alternatively, as shown in fig. 2, the male-female interlocking structure includes an outward protrusion 403 and an inward groove respectively formed at the connecting end of two adjacent track plates 402, and an elastic filling piece 404 for elastically connecting the two adjacent track plates 402. The outward bulge 403 and the inward groove are arranged oppositely in a matched mode to form a concave-convex matching structure, so that two adjacent track plates 402 can be quickly assembled, connected and limited. In the alternative, the outward protrusions 403 and the inward grooves are prefabricated and formed with the corresponding track slabs 402, so that the track slabs 402 are stable in overall structure and good in rigidity, and the concave-convex matching structure is simple and easy to prepare. The elastic filling piece 404 is installed between the connecting ends of two adjacent track slabs 402 and is deformed to be embedded between the concave-convex matching structures. In this alternative, the elastic filling sheet 404 is made of at least one of polyurethane, epoxy-modified polyurethane, and polyurethane-modified epoxy materials, and is used to elastically connect two adjacent track slabs 402, prevent hard collision between the track slabs 402 connected to each other, and further improve the service life and formation safety of the track slabs 402, and is also used to make the track slabs 402 capable of performing adaptive fine tuning and correction of the paving position and service period according to the temperature and load conditions, and further improve the installation and service precision of the track structure, and the track structure has good smoothness.

In this alternative, in the first embodiment of the concave-convex embedded structure, as shown in fig. 2, a group of concave-convex matching structures is arranged between two adjacent track slabs 402, and the outward protrusions 403 of the concave-convex matching structures are inserted into the inward grooves which are oppositely arranged along the train running direction. The resilient filler piece 404 deforms and snaps between the male and female mating structures. When only one group of concave-convex matching structures is arranged between two adjacent track plates 402, the track plates 402 have stable overall structure and good rigidity, and the concave-convex matching structures are simple and easy to prepare; and the outward bulge 403 of the concave-convex matching structure is inserted into the inward groove which is oppositely arranged along the running direction of the train, so that the structural connection stability is good, and the disconnection is not easy.

In this alternative embodiment, not shown, a plurality of concave-convex matching structures are disposed between two adjacent track plates 402, and the concave-convex matching structures are sequentially disposed along the width direction of the track plates 402. The outward bulges 403 of the multiple groups of concave-convex matching structures are sequentially arranged at the connecting end of the first track plate 402, and the inward grooves of the multiple groups of concave-convex matching structures are sequentially arranged at the connecting end of the adjacent second track plate 402. Or the plurality of outward bulges 403 of the multi-group concave-convex matching structure are respectively arranged on the connecting ends of the two adjacent track plates 402, and the plurality of inward grooves of the multi-group concave-convex matching structure are correspondingly arranged on the connecting ends of the two adjacent track plates 402. The resilient filler pieces 404 deform to snap between the sets of male and female mating structures. When a plurality of groups of concave-convex matching structures are arranged between two adjacent track plates 402, the connection stability between the connected track plates 402 is good, the interaction force at the joint is small, and the service life of the track plates 402 is long.

Optionally, the outward protrusion 403 is one of trapezoidal, triangular, U-shaped, and dovetail shaped. The inward groove is in a shape matched with the outward protrusion 403, the outward protrusion 403 and the inward groove are good in connection stability, and the safety of the structure in service can be improved.

Optionally, the stop bars comprise lateral stops 8 spaced one after the other along the length of the bed plate 6. The lower extreme and the support basis of side direction dog 8 are fixed, and the upper end lateral wall top of side direction dog 8 supports the side spacing of the track board 402 that corresponds the setting, or the upper end of side direction dog 8 compresses tightly bed plate 6 and supports the side spacing of the track board 402 that corresponds the setting. Through laying the side direction dog 8 that sets up along length direction interval in proper order in the both sides of track board 402, exert even top through side direction dog 8 to track board 402 and offset the effort, and then when making track board 402 receive high temperature and load change, have along fore-and-aft micromovement, and track board 402 atress is even, stable to can be convenient for track board 402's dismouting and maintenance.

Optionally, in the present invention, the base plate 6 may be formed by cast-in-place to have a millimeter-scale precision of the top surface; or the base plate 6 is prefabricated and molded in a factory, and a leveling adjustment layer positioned below the base plate 6 is formed by casting in situ so as to form millimeter-scale precision of the top surface of the base plate 6; or the base plate 6 is replaced by asphalt, high-performance concrete or the existing novel material, and is pressed down by the track plate to form millimeter-level precision of the top surface during cast-in-place.

Alternatively, as shown in fig. 3 to 5, the foundation plate 6 may be formed on the supporting foundation in situ, such as the foundation plate 6 may be formed on the roadbed 9 of the railway in situ, as shown in fig. 3, or the foundation plate 6 may be formed on the box girder 10 of the abutment 11 of the pier 12 in situ, as shown in fig. 4, or the foundation plate 6 may be formed on the foundation of the tunnel 13 in situ, as shown in fig. 5, so that the foundation plate 6 may be installed in a wide range and has a high adaptability. The base plate 6 is used for supporting the track slab module 4 and is used for accurately controlling the smoothness of the top surface of the track slab module in the pouring forming process, so that the smoothness of the top surface of the external limiting module assembly type track structure is accurately controlled. During actual construction, if an imported paver is adopted for construction, the elevation of a base layer is controlled by using machine vision measurement, meanwhile, settlement observation is enhanced, the stability of the roadbed is analyzed and predicted according to data obtained by observation, in order to reduce errors of elevation and thickness control, a section of every 8-10 m can be adopted, and a plurality of point measurements are sequentially arranged on each section at intervals; when the elevation measuring points are more in construction, the workload of elevation comparison and thickness calculation is large, an electronic computer can be adopted for conducting, the set elevation of the base plate and the actually measured elevation of each measuring point are made into data files, the difference value between the elevation of each measuring point and the designed elevation, the thickness of each measuring point, the thickness average value, the mean value and the representative value of each section are calculated through a compiled data processing program, and therefore next adjustment and control are guided.

Or, according to the requirement of high-precision construction of the assembled track base plate, the construction actual effect, the implementation performance and the accessibility of the base plate precision are comprehensively considered, and the intelligent construction equipment technology of the assembled track base plate is researched and comprises the following technical modules: 1) base plate concrete placement technique: through the comparative research on the technical advantages and feasibility of fixed and movable concrete mixing stations, the construction modes of a concrete raw material supply system and a raw material mixing and pouring system are provided, and the implementation technology and equipment of the base plate concrete pouring process flow are provided; 2) the intelligent space configuration precise control technology comprises the following steps: the method comprises the steps of providing a precise measurement and intelligent control technology suitable for the position shape of a base plate of an assembled track structure by integrating an inertial navigation system, a global positioning navigation system (GPS, Beidou), a vision measurement system, a three-dimensional laser scanning system and the like through comparison and selection; 3) shaping and shaping technology: corresponding construction technology and equipment are provided through the feasibility of a base plate shaping forming technology, a space profile extrusion adjusting technology and a top surface planing, grinding and leveling technology, so that an intelligent base plate shaping and shaping technology with self-adaptability is formed; 4) the intelligent control system comprises: a central control system of the assembly type track bed plate intelligent construction equipment technology is provided by integrating a bed plate concrete pouring technology, an intelligent space configuration precise control technology and a shaping and shaping technology, so that perception identification, precise measurement, intelligent decision and feedback adjustment of the whole process of bed plate construction are realized, and the requirement of precise shaping of the space configuration of the bed plate is met.

Referring to fig. 6, the external limiting module assembled track structure further comprises limiting blocking platforms 7, wherein the limiting blocking platforms 7 are arranged between two adjacent sets of track slab modules 4 and are alternately arranged along the length direction of the base plate 6 with the concave-convex embedded structures. The limiting blocking platform 7 is used for elastically limiting the track slab module 4 in the longitudinal direction and the transverse direction, and the lower end of the limiting blocking platform 7 is fixed with the base plate 6.

Compared with the prior art, when the base plate is poured, the fixed baffle table and the base plate are poured integrally, so that the pouring efficiency of the base plate is low, and the fixed baffle table is required to be poured at the same time, so that the mechanical operation rate is low, and the labor intensity of pouring personnel is high; according to the invention, the main structure of the limit baffle table 7 is intelligently built by adopting prefabricated assembly, after the base plate 6 is poured, the connecting part of the limit baffle table 7 is fixedly connected with the base plate 6 in a way of embedding a connecting piece in the base plate 6 and the like, so that the cast-in-place forming of the fixed baffle table in the traditional construction technology is changed, the requirement of quick assembly provided by the invention is met, meanwhile, the later-stage maintenance and disassembly and assembly of the track structure are facilitated, the base plate 6 can be mechanically poured, the pouring efficiency of the base plate 6 is high, the forming quality is good, and the labor intensity of constructors can be effectively reduced;

the track unit is combined by multiple modules through the track plate modules 4, so that the applicability is strong, the track plate modules 4 are designed in a standardized manner, produced in a factory manner and installed in an intelligent manner, the prefabricated modules are miniaturized and lightened, the production, stacking, transportation and installation are convenient, the track forming efficiency and quality are improved, a modular and assembled forming mode is realized, the assembling method is simple and convenient, the assembling efficiency is high, and the development requirements of modern tracks are met; on the other hand, compared with the prior art, when the track slab is damaged in the operation process, the whole track slab is replaced or maintained, only the damaged track slab module 4 needs to be replaced or maintained, the rapid repair can be realized, the replacement is simple, the maintenance cost is low, the maintenance required period is short, and the labor intensity of workers is low.

In the external limiting module assembled track structure, the limiting baffle table 7 can limit the adjacent track slab modules 4 longitudinally and transversely, the limiting function of the fixed baffle table is reserved, the limiting baffle table 7 can elastically limit the adjacent track slab modules 4 longitudinally and transversely, and the limiting baffle table 7 is elastically connected with the adjacent track slab modules 4, so that the track slab modules 4 can be subjected to adaptive fine adjustment of pavement positions according to temperature and load conditions through the limiting baffle table 7.

Optionally, as shown in fig. 6, the connecting ends of two adjacent track plates 402 are respectively provided with an inward concave receiving groove, and the receiving grooves at the connecting ends of two adjacent track plates 402 are spliced to form a receiving cavity for receiving the stopper table 7. The upper end of the limit stop table 7 is accommodated in the accommodating cavity and is elastically connected with the two adjacent track plates 402 into a whole, and the lower end of the limit stop table 7 is fixed with the base plate 6.

In this alternative, as shown in fig. 6, the limiting blocking platform 7 includes a connecting rod 704 for supporting the framework and limiting, a damping connecting column 703 with vibration damping and damping properties, a limiting pressing ring 702 for pressing two adjacent track plates 402 downwards for limiting, and an elastic connecting ring 701 for elastic connection. The lower end of the connecting rod piece 704 is fixed with the base plate 6, if the connecting piece is embedded in the base plate 6, the lower end of the connecting rod piece 704 is fixedly connected with the embedded connecting piece, and the upper end of the connecting rod piece 704 penetrates through the middle layer 5 and then extends into the accommodating cavity. The limiting compression ring 702 is positioned in the accommodating cavity and sleeved on the outer circle of the connecting rod piece 704, the damping connecting column 703 is filled and connected between the limiting compression ring 702 and the connecting rod piece 704, and the elastic connecting ring 701 is filled and connected between the limiting compression ring 702 and the accommodating cavity.

In the embodiment of this alternative embodiment, the connecting rod 704 is made of rigid material, such as i-steel, which is easy to obtain, easy to manufacture, and reliable in connection strength. The damping connecting column 703 is formed by pouring and filling self-leveling high-damping concrete in situ, the concrete plays a role in supporting the upper structure of the limit stop table 7 and damping, the self-leveling performance ensures the construction performance and quality of the concrete, and the high-damping performance ensures the damping effect of the concrete. The limiting compression ring 702 is prefabricated and molded by a factory, is made of Ultra High Performance Concrete (UHPC) into a prefabricated part, has the compressive strength of more than 150MPa, has excellent anti-cracking performance and durability, and is used for pressing down the second track plate so as to limit the displacement of the second track plate. The elastic connection ring 701 is formed by one of polyurethane, epoxy modified polyurethane and polyurethane modified epoxy materials through cast-in-place filling, and plays a role in elastic connection between structural components, so that the track slab module 4 can perform adaptive fine adjustment of a paving position according to temperature and load conditions. During actual construction, the limiting compression ring 702 is firstly pressed in the accommodating cavity, then self-leveling high-damping concrete is adopted to pour a gap between the limiting compression ring 702 and the connecting rod piece 704 to form a damping connecting column 703, and one of polyurethane, epoxy modified polyurethane and polyurethane modified epoxy is adopted to pour and fill the gap between the limiting compression ring 702 and the inner annular wall of the accommodating cavity to form the elastic connecting ring 701.

The limiting baffle table 7 is simple in structure and easy to assemble and construct; the limiting blocking platform 7 can limit the adjacent track slab modules 4 longitudinally and transversely, and the limiting function of the existing fixed blocking platform is reserved; the limiting blocking table 7 elastically limits the adjacent track slab modules 4 in the longitudinal direction and the transverse direction, and the limiting blocking table 7 is elastically connected with the adjacent track slab modules 4, so that the track slab modules 4 can be subjected to adaptive fine adjustment of paving positions according to the temperature and load conditions through the limiting blocking table 7, and further the external limiting module assembly type track structure is high in structural precision and good in smoothness.

In the embodiment of this alternative, as shown in fig. 6, the inner peripheral wall of the accommodating cavity is provided with a limiting bayonet. The peripheral wall of the limiting pressure ring 702 is provided with a limiting step which is matched with the limiting bayonet to limit the limiting pressure ring 702, the limiting step on the peripheral wall of the limiting pressure ring 702 is matched with the limiting bayonet in the accommodating cavity to limit the installation of the limiting pressure ring 702, and two adjacent track plates 402 are downwards pressed and positioned through the limiting pressure ring 702.

In a preferred embodiment of this alternative, as shown in fig. 6, the accommodating cavity is located in the center of the track slab 402 in the width direction, and two accommodating grooves that are spliced to form the accommodating cavity have the same structure and are arranged oppositely, and this structural arrangement manner of the accommodating cavity makes the acting force of the limiting blocking table 7 on two adjacent track slabs 402 tend to be balanced, so that the track slab has good load bearing performance, high working accuracy during service, and good structural stability.

Optionally, the limit stop 7 is one of a cylinder, an elliptic cylinder, a polygonal column and a kidney column. The shape of the accommodating cavity is matched with that of the limiting blocking platform 7, and the structural shape of the limiting blocking platform 7 can be specifically set according to the specific installation environment of the track, the load bearing condition, the stress condition and the like.

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

Claims (8)

1. The utility model provides an external spacing module pin-connected panel track structure which characterized in that includes:

the base plate (6) is used for leveling the external limiting module assembled track structure, the base plate (6) is cast in situ on a supporting base and extends along the running direction of a train, a middle layer (5) is paved on the base plate (6), track units sequentially distributed along the length direction of the middle layer (5) are paved on the middle layer (5), each track unit comprises track plate modules (4) sequentially distributed along the length direction, and the track plate modules (4) are prefabricated and formed and are used for guiding and supporting the train; the top surface millimeter-scale precision of the base plate (6) is formed by in-situ pouring; or the base plate (6) is prefabricated and molded in a factory, and a leveling adjustment layer is formed on the supporting base by casting in situ so as to form millimeter-scale precision of the top surface of the base plate (6); or the base plate (6) is replaced by asphalt or high-performance concrete material, and is pressed down and molded by the track plate during cast-in-place so as to form millimeter-level precision of the top surface;

a concave-convex embedded structure is further arranged between the two adjacent groups of track slab modules (4), and the concave-convex embedded structure is used for enabling the two adjacent groups of track slab modules (4) to be elastically connected into a whole along the longitudinal direction and limiting and adaptively correcting the connection of the two adjacent groups of track slab modules (4);

the external limiting module assembled track structure further comprises two groups of limiting strips for limiting the track slab module (4) along the transverse direction, the two groups of limiting strips are arranged on two sides of the track slab module (4) respectively and extend along the length direction of the base plate (6), and each limiting strip is connected to the supporting base and abuts against the track slab module (4) for limiting;

the track plate module (4) comprises track plates (402) sequentially laid on the middle layer (5) at intervals along the length direction of the middle layer (5), steel rails (1) extending along the length direction of the middle layer (5) and parallelly arranged above the track plates (402) at intervals, and track bearing platforms (401) sequentially arranged on the upper surface of the track plates (402) at intervals along the length direction of the track plates (402) to support the correspondingly arranged steel rails (1); the rail bearing platform (401) is connected with a fastener group (2) for locking and fixing the corresponding steel rail (1) and the rail bearing platform (401);

the external limiting module assembled track structure also comprises limiting baffle platforms (7), wherein the limiting baffle platforms (7) are arranged between two adjacent sets of track slab modules (4) and are alternately arranged with the concave-convex embedded structures along the length direction of the base plate (6); the limiting blocking platform (7) is used for elastically limiting the track slab module (4) along the longitudinal direction and the transverse direction, and the lower end of the limiting blocking platform (7) is fixed with the base plate (6);

the connecting ends of two adjacent track plates (402) are respectively provided with an inwards concave containing groove, and the containing grooves at the connecting ends of the two adjacent track plates (402) are spliced to form a containing cavity for containing the limiting blocking table (7); the upper end of the limiting blocking platform (7) is accommodated in the accommodating cavity and is elastically connected with the two adjacent track plates (402) into a whole, and the lower end of the limiting blocking platform (7) is fixed with the base plate (6);

the limiting blocking platform (7) comprises a connecting rod piece (704) which plays a role in supporting a framework and limiting, a damping connecting column (703) with vibration damping and damping performance, a limiting pressing ring (702) which is used for pressing and limiting two adjacent track plates (402) downwards, and an elastic connecting ring (701) which plays a role in elastic connection; the lower end of the connecting rod piece (704) is fixed with the base plate (6), a connecting piece is pre-embedded in the base plate (6), the lower end of the connecting rod piece (704) is fixedly connected with the pre-embedded connecting piece, and the upper end of the connecting rod piece (704) penetrates through the middle layer (5) and then extends into the accommodating cavity; the limiting compression ring (702) is positioned in the accommodating cavity and sleeved on the outer circle of the connecting rod piece (704), the damping connecting column (703) is filled and connected between the limiting compression ring (702) and the connecting rod piece (704), and the elastic connecting ring (701) is filled and connected between the limiting compression ring (702) and the accommodating cavity;

the connecting rod piece (704) is made of I-shaped steel; the damping connecting column (703) is formed by pouring and filling self-leveling high-damping concrete in situ; the limiting compression ring (702) is prefabricated and molded by a factory, and is made into a prefabricated part by adopting ultra-high performance concrete UHPC (ultra high performance concrete), and the compressive strength of the prefabricated part is more than 150 MPa; the elastic connecting ring (701) is formed by pouring and filling one of polyurethane, epoxy modified polyurethane and polyurethane modified epoxy materials in situ.

2. The external spacing module assembled track structure of claim 1,

the rail bearing platform (401) is connected with a fastener group (2) used for locking and fixing the corresponding steel rail (1) and the rail bearing platform (401).

3. The external spacing module assembled track structure of claim 2,

the concave-convex embedded structure comprises an outward protrusion (403) and an inward groove which are respectively arranged on the connecting ends of two adjacent track plates (402), and an elastic filling sheet (404) used for elastically connecting the two adjacent track plates (402);

the outward bulge (403) and the inward groove are oppositely matched to form a concave-convex matching structure;

the elastic filling sheets (404) are arranged between the connecting ends of the two adjacent track plates (402) and are embedded between the concave-convex matching structures in a deformed mode.

4. The external spacing module assembled track structure of claim 3,

a group of concave-convex matching structures is arranged between every two adjacent track plates (402), and the outward bulges (403) of the concave-convex matching structures are inserted into the inward grooves which are oppositely arranged along the running direction of the train;

the elastic filling sheet (404) is deformed and clamped between the concave-convex matching structures.

5. The external spacing module assembled track structure of claim 3,

a plurality of groups of concave-convex matching structures are arranged between two adjacent track plates (402), and the plurality of groups of concave-convex matching structures are sequentially arranged along the width direction of the track plates (402);

the plurality of outward bulges (403) of the concave-convex matching structures are sequentially distributed on the connecting end of the first track plate (402), and the plurality of inward grooves of the concave-convex matching structures are sequentially distributed on the connecting end of the adjacent second track plate (402); or

The outward bulges (403) of the concave-convex matching structures are respectively arranged at the connecting ends of two adjacent track plates (402), and the inward grooves of the concave-convex matching structures are correspondingly arranged at the connecting ends of two adjacent track plates (402);

the elastic filling sheets (404) are deformed and clamped among the groups of concave-convex matching structures.

6. The external spacing module assembled track structure of claim 3,

the outward bulge (403) is in one of a ladder shape, a triangular shape, a U shape and a swallow-tail shape;

the inward groove is in a shape matching the outward protrusion (403).

7. The external spacing module assembled track structure of claim 3,

the elastic filling sheet (404) is prepared from at least one of polyurethane, epoxy modified polyurethane and polyurethane modified epoxy materials.

8. The external spacing module assembled track structure of claim 2,

the limiting strips comprise lateral stopping blocks (8) which are sequentially arranged at intervals along the length direction of the base plate (6);

the lower extreme of side direction dog (8) with it is fixed to support the basis, the upper end lateral wall top of side direction dog (8) supports and corresponds the setting the side of track board (402) is spacing, or the upper end of side direction dog (8) compresses tightly bed plate (6) and supports and support the corresponding setting the side of track board (402) is spacing.

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