CN110106751B - Settlement adjustment method suitable for CRTS II type plate ballastless track - Google Patents
Settlement adjustment method suitable for CRTS II type plate ballastless track Download PDFInfo
- Publication number
- CN110106751B CN110106751B CN201910310397.7A CN201910310397A CN110106751B CN 110106751 B CN110106751 B CN 110106751B CN 201910310397 A CN201910310397 A CN 201910310397A CN 110106751 B CN110106751 B CN 110106751B
- Authority
- CN
- China
- Prior art keywords
- track
- settlement
- plate
- area
- crts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/06—Transporting, laying, removing or renewing sleepers
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a settlement adjusting method suitable for a CRTS II type plate ballastless track, which belongs to the technical field of track maintenance and repair, wherein a CRTS II type track plate in a settlement area is correspondingly replaced by a CRTS III type track plate, and an isolation layer and a self-compacting concrete layer of the settlement area are correspondingly arranged, so that the conversion of a longitudinal connection structure system of the track plate in the settlement area to a unit structure system is effectively realized, the settlement adjustment of the ballastless track in the settlement area is realized, and convenience is provided for the adjustment of the track plate when secondary settlement occurs subsequently. The settlement adjusting method provided by the invention has the advantages of simple steps and convenience in operation, can effectively realize settlement adjustment of the CRTS II type plate ballastless track in night skylight time, can ensure normal operation of the line in daytime during the period of regulation, effectively improves the settlement adjusting efficiency of the ballastless track, reduces the settlement adjusting cost of the ballastless track, reduces the influence of the settlement adjusting of the ballastless track on normal operation of the line, and has better application prospect and popularization value.
Description
Technical Field
The invention belongs to the technical field of track maintenance and repair, and particularly relates to a settlement adjusting method suitable for a CRTS II type plate ballastless track.
Background
With the continuous development of economy and the continuous acceleration of urbanization process in China, the rail transit industry in China is rapidly developed, and the convenience of people in going out and the rapidity of freight transportation are remarkably improved.
In the field of rail traffic, ballastless tracks are widely applied, and according to different connection systems, the existing ballastless track structure mainly comprises three types, namely a CRTS I type plate ballastless track, a CRTS II type plate ballastless track and a CRTS III type plate ballastless track, and the connection modes of the three ballastless track connection modes are different and have respective advantages and disadvantages. The CRTS II type slab ballastless track generally adopts a longitudinal connection structure system, namely adjacent track slabs are correspondingly connected through reinforcing steel bars, and concrete is poured at the connection position, so that the ballastless track has the advantages of good smoothness and small deformation through mutual restriction of the adjacent track slabs; however, the arrangement form of the CRTS ii slab ballastless track also causes certain defects in the application process, which mainly appear as follows: once the lower foundation of a certain section of CRTS II type plate ballastless track generates structural deformation such as large settlement or deviation, the normal use of the track can be influenced; moreover, the CRTS II type slab ballastless track adopts a longitudinal connection structure system, so the improvement is difficult.
In general, for local settlement of a CRTS ii slab ballastless track, a conventional method is to remove a mortar layer below a track slab and then add a mortar layer with a corresponding thickness to ensure that the track slab at a settlement position can maintain continuity with the track slab in an unsettled area. Although the method can realize the settlement adjustment of the CRTS II type slab ballastless track to a certain extent, the method is usually only suitable for the track height adjustment of an area with small settlement amount, and for an area with large settlement height, the mortar layer with large thickness cannot fully meet the stress requirement of the ballastless track and does not meet the requirement of the setting specification; moreover, once the adjusted ballastless track has subsequent settlement, the adjusting process is repeated, the process is complicated, the adjusting period is long, the adjusting workload is large, and the range of the track slab involved in adjustment is large. Meanwhile, the mortar layer is chiseled for many times, so that the existing track slab is likely to be damaged, the existing track slab cannot be normally used in serious cases, the use and maintenance cost of the ballastless track is increased, and the application limitation is large.
Disclosure of Invention
Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides a settlement adjusting method suitable for a CRTS II type plate ballastless track, wherein the CRTS II type track plate in a settlement area is correspondingly replaced by a CRTS III type track plate, and an isolation layer and a self-compacting concrete layer in the settlement area are correspondingly arranged, so that the settlement adjustment of the ballastless track in the settlement area can be effectively realized, the convenience is provided for the secondary settlement adjustment of the track when the secondary settlement occurs subsequently, the workload of the settlement adjustment of the ballastless track is effectively reduced, the track adjusting period is shortened, and the track settlement adjusting cost is saved.
In order to achieve the above object, the present invention provides a settlement adjusting method suitable for a CRTS ii type slab ballastless track, which is implemented by replacing a second track slab in a settlement area with a first track slab, wherein the second track slab is a CRTS ii type track slab, the first track slab is a CRTS iii type track slab, and the settlement adjusting steps are as follows:
s1: measuring the line shape of the CRTS II type plate ballastless track, determining the length of the settlement area and the settlement amount of the steel rail in the settlement area, and determining the setting number of the first track plates, the number and the height of the limiting bosses arranged corresponding to the first track plates and the thickness of the self-compacting concrete layer arranged corresponding to each first track plate;
s2: cutting the steel rail at the junction of the subsidence area and the unsettled area to obtain a subsidence section steel rail corresponding to the length of the subsidence area, removing the subsidence section steel rail from the second track plates in the subsidence area, and removing each second track plate in the subsidence area;
s3: chiseling a mortar layer arranged on a base plate in the settling area, cleaning the top surface of the base plate, and leveling the top surface of the base plate;
s4: limiting bosses with a certain height are correspondingly arranged on the top surface of the base plate corresponding to the two ends of the first track plate; if the number of the first track plates is one, the limiting bosses comprise semi-cylindrical second limiting bosses which are respectively arranged at two ends of the settling zone; if the number of the first track plates is multiple, the limiting bosses further comprise a plurality of cylindrical first limiting bosses which are arranged between the two second limiting bosses, and the first limiting bosses can be matched with the end parts of the two adjacent first track plates;
s5: correspondingly arranging an isolation layer with a certain thickness on the top surface of the base plate, and laying a steel bar mesh with a certain thickness above the isolation layer;
s6: a plurality of cushion blocks with the thickness equal to that of the self-compacting concrete layer are respectively arranged on the base plate corresponding to the first track plates, and the first track plates are hoisted to the base plate, so that two ends of each first track plate are respectively matched with the corresponding limiting bosses, and each first track plate is respectively placed on the cushion blocks;
s7: finely adjusting the first track plates to realize the corresponding matching of the first track plates and the second track plates at two ends of the settlement area, and arranging a perfusion template and a pressing device at two sides of each first track plate;
s8: pouring self-compacting concrete between the first track slab and the base plate to form the self-compacting concrete layer between the isolation layer and the first track slab;
s9: removing the pouring template and the pressing device, and pouring resin between the first track plate and the limiting boss;
s10: and correspondingly arranging a new steel rail on the first track plate in the subsidence area, and correspondingly welding the new steel rail with the old steel rail in the undeposited area, thereby realizing the subsidence adjustment of the CRTS II type plate ballastless track.
As a further improvement of the present invention, in step S2, before the sinking rail is cut and is not removed from the second rail plate, a plurality of bolt holes are respectively formed in the rail waist portions corresponding to the two sides of each slit along the longitudinal direction at intervals for the arrangement of the rail joint clamping plates.
As a further improvement of the present invention, in step S3, the chiseling construction of the mortar bed may be divided into a plurality of construction units to be respectively performed, and the length of each construction unit is equal to the sum of the lengths of a certain number of the second track plates; in step S2, the second track slab is removed corresponding to each construction unit, and the subsidence area can temporarily recover to pass after the construction of each construction unit is completed;
the construction steps of the mortar layer are as follows:
s31: selecting one construction unit for construction, chiseling wide and narrow joint concrete at the edges of two ends of the second track slab corresponding to the construction unit, clearing concrete ash in the wide and narrow joint, and removing the corresponding second track slab:
s32: chiseling a mortar layer corresponding to the construction unit to display the top surface of a base plate at the bottom of the construction unit, cleaning the top surface of the base plate, and leveling the top surface of the base plate;
s33: arranging a plurality of elongated transition sleepers on the top surface of the leveled base plate at intervals along the longitudinal direction, and correspondingly limiting and fixing each transition sleeper on the base plate, wherein the transition sleepers are wood sleepers or steel sleepers;
s34: correspondingly hoisting the steel rail of the subsidence section back to the subsidence area, realizing the adjustment of the track line shape by adjusting a fastener, and respectively connecting two ends of the steel rail of the subsidence section with the steel rail of the unsettled area through the steel rail joint clamping plates so as to recover the temporary traffic of the subsidence area;
s35: and repeating the steps S31-S34 until the construction of the whole mortar layer of the settling zone is completed.
As a further improvement of the invention, the length of the construction unit is equal to the length of the two second track slabs, and the construction of the construction unit is performed in night skylight time of the ballastless track.
As a further improvement of the present invention, the second limiting boss is disposed between the corresponding transition sleeper and the second track plate in the unsettled area, and the first limiting boss is disposed between the corresponding two adjacent transition sleepers.
As a further improvement of the present invention, the height of the limiting bosses is higher than the height of the top surface of the first track slab after installation, that is, after the first track slab is correspondingly installed in the subsidence area, the top of each limiting boss extends out of the top surface of the corresponding first track slab.
As a further improvement of the present invention, in step S5, the isolation layer is a geotextile with a certain thickness.
As a further improvement of the present invention, in step S9, before resin is poured, resin pouring bags are correspondingly disposed between the first track plate and the limiting bosses, so that the resin pouring bags are flatly adhered to the side walls of the first track plate and the limiting bosses.
As a further improvement of the invention, after the resin infusion bag is arranged, a foam side baffle and a protective cushion are arranged in a gap between two adjacent track plates corresponding to the limiting lug bosses.
As a further improvement of the present invention, in step S2, before the cutting of the steel rail, the second track slab in the undetached area is pretreated, and the treatment process is as follows:
and carrying out bar planting and anchoring on the end part of the second track plate at the junction of the undeposited area and the subsided area, so that the second track plate at the end part of the undeposited area is tightly fixed with the base plate.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
(1) the settlement adjusting method suitable for the CRTS II type plate ballastless track effectively realizes the conversion of the longitudinal connection structure system of the track slab in the settlement area to the unit structure system by correspondingly replacing the CRTS II type track slab in the settlement area with the CRTS III type track slab and correspondingly arranging the isolation layer and the self-compacting concrete layer of the settlement area, thereby not only realizing the settlement adjustment of the ballastless track in the settlement area, but also providing convenience for the adjustment of the track slab when the secondary settlement occurs subsequently;
(2) according to the settlement adjusting method suitable for the CRTS II type slab ballastless track, construction of a settlement area is divided into a plurality of construction units, and corresponding transition sleepers are arranged corresponding to construction of each construction unit, so that the method is effectively suitable for the daytime operation process of a line, construction of the construction units in the skylight time of the track at night and temporary recovery traffic of the track at daytime are realized, the influence of settlement adjustment of the ballastless track on normal operation of the line is effectively reduced, the train dispatching cost in the maintenance process of the ballastless track is reduced, and the economical efficiency and the stability of operation of the ballastless track are improved;
(3) according to the settlement adjusting method suitable for the CRTS II type slab ballastless track, the cylindrical first limiting boss and the semi-cylindrical second limiting boss are arranged, so that the limiting and fixing of the end part of the first track slab are effectively realized, and the height of the limiting boss is preferably set, so that the top part of the limiting boss can extend out of the top surface of the first track slab after the first track slab is correspondingly matched with the limiting boss, thereby providing convenience for subsequent secondary settlement during secondary settlement, shortening the period of secondary adjustment and reducing the workload of secondary adjustment;
(4) the settlement adjusting method suitable for the CRTS II type plate ballastless track has the advantages of being simple in steps, convenient to operate, capable of effectively achieving settlement adjustment of the CRTS II type plate ballastless track, achieving temporary passing of a line in the settlement adjusting process, effectively improving the settlement adjusting efficiency of the ballastless track, reducing the settlement adjusting cost of the ballastless track, reducing the influence of the settlement adjustment of the ballastless track on normal operation of the line in the daytime, and having good application prospect and popularization value.
Drawings
Fig. 1 is a schematic diagram of a settlement remediation structure suitable for a CRTS ii slab ballastless track in an embodiment of the present invention;
FIG. 2 is a top view of a partial structure of a butt joint between two CRTS III track boards according to an embodiment of the present invention;
FIG. 3 is a longitudinal sectional view of a part of a butt joint when two CRTS III type track slabs are matched according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a portion of the structure at A-A when two CRTS III track boards are mated in accordance with an embodiment of the present invention;
FIG. 5 is a top view of a partial structure of a butt joint between a subsided CRTS III type track slab and an unsettled CRTS II type track slab in accordance with an embodiment of the present invention;
FIG. 6 is a longitudinal sectional view of a part of a structure of a butt joint when a subsided CRTS III type track slab is matched with an unsettled CRTS II type track slab in an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a portion of the structure at B-B when a sinker CRTS III track plate is mated with a non-sinker CRTS II track plate in an embodiment of the present invention;
in all the figures, the same reference numerals denote the same features, in particular: 1. a first track unit 101, a first track plate 102, a self-compacting concrete layer 103, an isolation layer 104, a grouting hole 105, and a hoisting sleeve; 2. a second track unit, 201, a second track plate, 202, a mortar layer; 3. the limiting boss is 301, the first limiting boss is 302, and the second limiting boss is 302; 4. base plate, 5. steel rail.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The settlement adjusting method suitable for the CRTS II type plate ballastless track in the preferred embodiment of the invention is correspondingly proposed based on the CRTS III type track plate, meanwhile, the limit structure of the CRTS III type track plate is adjusted from the plate bottom to the plate end, the circular boss is used for limiting, and the structural schematic diagram after the setting is shown in figure 1. In the figure, the two ends in the longitudinal direction (the rail running direction) are non-settlement areas, the middle is a settlement area, the non-settlement areas at the two ends are respectively provided with a second rail unit 2, the settlement area at the middle is sequentially provided with a plurality of first rail units 1 in the longitudinal direction, and the adjacent first rail units 1 and second rail units 2 are correspondingly limited by limiting bosses 3.
Specifically, the first track unit 1, the second track unit 2 and the limiting boss 3 are respectively arranged on a base plate 4 arranged along the longitudinal direction, and the first track unit 1 comprises a first track plate 101, a self-compacting concrete layer 102 and an isolating layer 103 which are sequentially arranged on the base plate 4 from top to bottom; the second track unit 2 includes a second track plate 201 and a mortar layer sequentially disposed on the base plate 4 from top to bottom.
Specifically, the first track slab 101 is a CRTS iii-type track slab, and the second track slab 201 is a CRTS ii-type track slab, in the preferred embodiment, the second track slab 201 forms a longitudinal connection structure by corresponding connection of slab ends, and the first track slab 101 in the preferred embodiment has a structure as shown in fig. 1, and circular arc grooves are respectively formed in the middle parts of two ends of the first track slab, so that after the two first track slabs 101 are correspondingly matched in the longitudinal direction, the circular arc grooves at the end parts of the two track slabs can be correspondingly spliced into a cylindrical cavity as shown in fig. 2, so that the cylindrical limiting boss 3 correspondingly penetrates through the circular arc grooves, and then the corresponding limiting and fixing of the end part of the two track slabs at the end part is realized by the limiting boss 3. Meanwhile, the middle part of the first track slab 101 in the preferred embodiment is provided with a plurality of grouting holes 104 at intervals along the longitudinal direction, and the grouting holes are used for grouting and molding the self-compacting concrete layer 102 below the first track slab 101.
Further, in a preferred embodiment, the number of the first track units 1 is selected according to the length of the subsidence area, if the number of the first track units 1 is multiple, the adjacent first track units 1 are limited correspondingly by the cylindrical limiting bosses 3, and the first track units 1 located at two ends of the subsidence area are limited by the semi-cylindrical limiting bosses 3 arranged between the first track units 1 and the second track units 2, as shown in fig. 1; if the number of the first track units 1 is one, the two ends of the first track units 1 are respectively limited by the semi-cylindrical limiting bosses 3.
Further, the settlement adjusting method suitable for the CRTS ii type slab ballastless track based on the CRTS iii type track slab may preferably include the following steps:
s1: the linear shape of the CRTS II type plate ballastless track is measured, the longitudinal length of a settlement area and the settlement amount or offset of the track in the settlement area are calculated, the longitudinal length of the first track unit 1 and the setting thickness of the self-compacting concrete layer 102 on the base plate 4 of the settlement area are correspondingly determined, the setting height of the limiting bosses 3 is determined, and the setting number of the first track plates 101, the setting number of the limiting bosses 3 and the setting height are determined. Further preferably, the line shape of the CRTS II type slab ballastless track can be measured according to a retest CP III control network.
S2: before the settlement zone remediation, the second track units 2 in the non-settlement zones on the two sides of the settlement zone are pretreated to ensure that the second track units 2 at the junction with the settlement zone can be ensured to be stable after the second track plates 201 in the settlement zone are removed; specifically, the second track slabs 201 corresponding to the two ends of the subsidence area are anchored by planting bars, so that the ends of the second track slabs 201 are tightly fixed to the base plate 4.
S3: according to construction needs, the existing equipment corresponding to the line of the settlement area is temporarily dismantled and marked correspondingly, and the main dismantled equipment comprises a ballast-ballastless transition section inter-line sealing layer, a ballast-ballastless transition section auxiliary rail, signal machine side concrete, a lateral stop block and the like.
S4: cutting the steel rail 5 at the junction of the subsidence area and the unsettled area to obtain a subsidence section steel rail corresponding to the length of the subsidence area, wherein the two ends of the steel rail are preferably in a rail locking temperature range during cutting, the steel rails 5 at the two sides of the joint seam are respectively locked by fasteners during cutting of the steel rail 5 at the subsidence area, and then a plurality of bolt holes are respectively formed in the steel rails 5 at the two sides of the joint seam correspondingly, are formed in the waist of the steel rail and are arranged at intervals along the longitudinal direction and are arranged corresponding to the steel rail joint splints, so that the corresponding connection between the subsidence section steel rail and the end part of the steel rail at the unsettled area is realized through the corresponding arrangement of; further, after the corresponding cutting of the steel rail of the subsidence section and the corresponding opening of the bolt holes are completed, the fastener of the steel rail in the subsidence area is loosened to lift the steel rail of the subsidence section and move the steel rail to the storage area of the steel rail.
S5: determining the length of construction, wherein the length of a settlement area is often longer, and the track is often required to meet the requirement that a line does not interrupt a travelling crane in the daytime during settlement adjustment construction, so the settlement adjustment construction is often required to be carried out in night skylight time; in view of the fact that the skylight time is 4 hours in general, in consideration of the speed of night construction and the temporary traffic demand of the line in the daytime, in actual construction, the settlement adjustment construction of the settlement area is divided into a plurality of construction units for corresponding construction, and the length of the construction units is the length of the two second track plates 201 in the preferred embodiment. In general, the first track plate 101 is designed to have a length equal to that of the second track plate 201 and to be a standard value.
S6: when a certain construction unit is correspondingly constructed, firstly chiseling wide and narrow joint concrete at the edge positions of two ends of the construction unit, dismantling corresponding tensioning locking pieces, and clearing concrete ash in the wide and narrow joints; then jacking the second track plate 201 corresponding to the construction unit to be separated from the mortar layer 202 at the bottom of the second track plate by using a fine adjustment jack, and hoisting the jacked second track plate 201 to a storage area by using a track crane; after the second track board 201 is removed, the mortar layer 201 below the corresponding removed track board is chiseled by an electric pick, so that the top surface of the base plate 4 is displayed, and then the base plate 4 is cleaned by a high-pressure water gun.
Furthermore, after the base plate 4 is cleaned up, leveling is carried out on the top surface of the base plate 4 by utilizing quick-setting mortar, after corresponding leveling, a plurality of transition sleepers can be laid on the base plate 4 at intervals along the longitudinal direction, corresponding limiting of two ends of the transition sleepers is realized, and the transition sleepers can be wooden sleepers or steel sleepers; after longitudinal and transverse limiting of the transition sleeper in the construction unit is realized, the linear shape of the rail can be adjusted to the position corresponding to the rail in the unsettled area by adjusting the height of the fastener base plate and the plane position of the fastener, and then the contact net guide height above the subsidence area is correspondingly adjusted to meet the normal operation of the train;
after the transition sleeper is arranged, correspondingly reducing the cut subsidence section steel rail, and correspondingly connecting the subsidence section steel rail with the steel rails in the undeposited areas at two ends by using the steel rail joint clamping plates, thereby completing the corresponding construction of the construction unit in a skylight time, meeting the temporary passing of the track in the subsidence area in the construction process, and needing no strong limit structure and connection structure because the speed of the train passing through the subsidence area in the construction process can be limited;
further, in the next skylight time, repeating the process, and carrying out corresponding construction on the next construction unit until the removal of the mortar layer of the whole settlement area and the arrangement of the transition sleeper are completed; further preferably, the transition sleepers in the preferred embodiment are wooden sleepers, which are arranged at longitudinal intervals of 0.5 m.
S7: a plurality of limiting bosses 3 are arranged and molded on the base plate 4 of the settling zone corresponding to the first track plates 101, and each limiting boss comprises a semi-cylindrical second limiting boss 302 and a semi-cylindrical first limiting boss 301, wherein the semi-cylindrical second limiting bosses are respectively arranged at two ends of the settling zone, and the semi-cylindrical second limiting bosses are correspondingly arranged between the two first track plates 101; specifically, the limiting bosses 3 can be arranged by correspondingly planting bars on the base plate 4 between the transition sleepers by using an electric drill, a bar detector can be preferably adopted to avoid bars in the base plate 4 in the bar planting process during drilling, after the bars are planted and bound, corresponding pouring forming templates are installed, and the semi-cylindrical and/or cylindrical limiting bosses 3 are correspondingly poured and formed at the bar planting positions; further, when the limiting boss 3 is formed, the elevation of the top surface of the limiting boss 3 is preferably higher than the elevation of the first track plate 101 after setting, that is, the top surface of the limiting boss 3 protrudes out of the top surface of the first track plate 101 after setting, so as to provide conditions for possible subsequent adjustment, and once the adjusted track structure is settled again, the height adjustment can be realized by lifting the first track plate 101 and thickening the self-compacting concrete layer.
S8: dismantling the transition sleeper, correspondingly arranging an isolation layer 103 on the top surface of the base plate 4, wherein the isolation layer 103 in the preferred embodiment is a geotextile which is correspondingly laid, and the geotextile is ensured to be flat and centered as much as possible in the laying process and is prevented from being cut; further, correspond on laying the isolation layer 103 of accomplishing and lay the reinforcing bar net piece, correspond respectively on the bed plate 4 then and treat the first track board 101 of changing and set up the cushion to the first track board 101 hoist and mount to bed plate 4 top with the change usefulness, make the both ends of first track board can match with the spacing boss 3 that corresponds respectively, and the four corners department of first track board 101 takes respectively and puts on the cushion, the reinforcing bar net piece is laid at bed plate 4 top surface of first track board 101 below promptly.
S9: the track slab fine adjustment claw is used for fine adjustment of the first track slab 1, after the fine adjustment is qualified, filling templates of the self-compacting concrete layer 102 are correspondingly installed on two sides of each first track slab 101 in the settlement area, and a pressing device is correspondingly installed to ensure stable forming of the self-compacting concrete layer 102; and then the fast hard concrete of stirring to through on the first track board 101 along a plurality of grout holes 104 correspondence that longitudinal separation seted up between first track board 101 and the bed plate 4, form the self-compaction concrete layer 102 of first track board 101 below then, treat that the concrete condenses the sclerosis completely after, demolish pouring template, track board fine tuning claw and closing device.
S10: cleaning the filling part of the limiting boss 3, ensuring the drying of the filling part, and correspondingly measuring the distance between the limiting boss 3 and the first track slab 101, so as to fill boss resin; further, when pouring boss resin, a resin pouring bag needs to be arranged on the periphery of the limiting boss 3, so that the pouring bag is flatly adhered to the side walls of the first track plate 101 and the limiting boss 3, and then a foam side baffle and a protective pad are arranged in a crack between two adjacent track plates to prevent the resin from flowing into a gap between the two track plates.
S11: the new steel rail is conveyed to the first track unit 1 of the settlement area, under the normal condition, the length of the new steel rail is larger than that of the settlement area, then the existing steel rail 5 on one side of the settlement area and the settlement area can be correspondingly replaced by the new steel rail, the corresponding arrangement of the new steel rail can be realized by correspondingly adjusting the line shape of the steel rail, and the two ends of the new steel rail can be respectively connected with the steel rail 5 in the non-settlement area in a welding mode, so that the settlement adjustment of the ballastless track of the settlement area is completed. Further preferably, after the setting of the new steel rail is completed, the normal operation of the ballastless track can be recovered corresponding to the equipment or the structure removed in the step S3.
The settlement adjusting method for the CRTS II type plate ballastless track is realized by using the CRTS III type track plate, can effectively realize track adjustment of a ballastless track settlement area, ensures the stress stability and the structural reliability of the ballastless track after the track settlement adjustment, can effectively realize settlement adjustment when the ballastless track is greatly settled, and recovers the normal use of the ballastless track; in addition, the ballastless track can effectively realize the normal traffic of the line in the daytime in the settlement adjustment process by dividing the construction area into a plurality of construction units and correspondingly arranging corresponding transition sleepers in the adjustment process, thereby reducing the influence of the settlement adjustment process on the normal operation of the line and reducing the difficulty in train scheduling caused by track maintenance; and through replacing the track plate in the settlement area with the first track plate by the second track plate, namely replacing the original CRTS II track plate by the CRTS III track plate, the adjustment difficulty of the track plate in the settlement area due to longitudinal connection between plates is reduced, and adjustment convenience is provided for settlement adjustment of the unit track plates when secondary settlement occurs in the later settlement area, so that the settlement adjustment efficiency of the ballastless track is effectively improved, the overhaul and maintenance cost of the ballastless track is saved, and the method has better application prospect and popularization value.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A settlement adjusting method suitable for a CRTS II type plate ballastless track is realized by replacing a second track plate in a settlement area with a first track plate, wherein the second track plate is a CRTS II type track plate, the first track plate is a CRTS III type track plate, and the settlement adjusting step comprises the following steps:
s1: measuring the line shape of the CRTS II type plate ballastless track, determining the length of the settlement area and the settlement amount of the steel rail in the settlement area, and determining the setting number of the first track plates, the number and the height of the limiting bosses arranged corresponding to the first track plates and the thickness of the self-compacting concrete layer arranged corresponding to each first track plate;
s2: cutting the steel rail at the junction of the subsidence area and the unsettled area to obtain a subsidence section steel rail corresponding to the length of the subsidence area, removing the subsidence section steel rail from the second track plates in the subsidence area, and removing each second track plate in the subsidence area;
s3: chiseling a mortar layer arranged on a base plate in the settling area, cleaning the top surface of the base plate, and leveling the top surface of the base plate;
s4: limiting bosses with a certain height are correspondingly arranged on the top surface of the base plate corresponding to the two ends of the first track plate; if the number of the first track plates is one, the limiting bosses comprise semi-cylindrical second limiting bosses which are respectively arranged at two ends of the settling zone; if the number of the first track plates is multiple, the limiting bosses further comprise a plurality of cylindrical first limiting bosses which are arranged between the two second limiting bosses, and the first limiting bosses can be matched with the end parts of the two adjacent first track plates;
s5: correspondingly arranging an isolation layer with a certain thickness on the top surface of the base plate, and laying a steel bar mesh with a certain thickness above the isolation layer;
s6: a plurality of cushion blocks with the thickness equal to that of the self-compacting concrete layer are respectively arranged on the base plate corresponding to the first track plates, and the first track plates are hoisted to the base plate, so that two ends of each first track plate are respectively matched with the corresponding limiting bosses, and each first track plate is respectively placed on the cushion blocks;
s7: finely adjusting the first track plates to realize the corresponding matching of the first track plates and the second track plates at two ends of the settlement area, and arranging a perfusion template and a pressing device at two sides of each first track plate;
s8: pouring self-compacting concrete between the first track slab and the base plate to form the self-compacting concrete layer between the isolation layer and the first track slab;
s9: removing the pouring template and the pressing device, and pouring resin between the first track plate and the limiting boss;
s10: and correspondingly arranging a new steel rail on the first track plate in the subsidence area, and correspondingly welding the new steel rail with the old steel rail in the undeposited area, thereby realizing the subsidence adjustment of the CRTS II type plate ballastless track.
2. The settlement adjusting method for CRTS ii slab ballastless track of claim 1, wherein in step S2, before the settlement section steel rail is cut and not removed from the second track slab, a plurality of bolt holes are respectively opened along the longitudinal direction at intervals at the rail waist portion corresponding to the two sides of each slit for the arrangement of the rail joint clamping plate.
3. The settlement adjusting method for CRTS ii slab ballastless track of claim 2, wherein in step S3, the chiseling construction of the mortar layer is divided into a plurality of construction units to be performed respectively, and the length of each construction unit is equal to the sum of the lengths of a certain number of the second track slabs; in step S2, the second track slab is removed corresponding to each construction unit, and the subsidence area can temporarily recover to pass after the construction of each construction unit is completed;
the construction steps of the mortar layer are as follows:
s31: selecting one construction unit for construction, chiseling wide and narrow joint concrete at the edges of two ends of the second track slab corresponding to the construction unit, clearing concrete ash in the wide and narrow joint, and removing the corresponding second track slab:
s32: chiseling a mortar layer corresponding to the construction unit to display the top surface of a base plate at the bottom of the construction unit, cleaning the top surface of the base plate, and leveling the top surface of the base plate;
s33: arranging a plurality of elongated transition sleepers on the top surface of the leveled base plate at intervals along the longitudinal direction, and correspondingly limiting and fixing each transition sleeper on the base plate, wherein the transition sleepers are wood sleepers or steel sleepers;
s34: correspondingly hoisting the steel rail of the subsidence section back to the subsidence area, realizing the adjustment of the track line shape by adjusting a fastener, and respectively connecting two ends of the steel rail of the subsidence section with the steel rail of the unsettled area through the steel rail joint clamping plates so as to recover the temporary traffic of the subsidence area;
s35: and repeating the steps S31-S34 until the construction of the whole mortar layer of the settling zone is completed.
4. The settlement adjusting method for the CRTS II type slab ballastless track according to claim 3, wherein the length of the construction unit is equal to the length of the two second track slabs, and the construction of the construction unit is performed within the night skylight time of the ballastless track.
5. The settlement adjusting method suitable for the CRTS II type slab ballastless track of claim 3 or 4, wherein in step S4, the second limiting boss is disposed between the corresponding transition sleeper and the second track slab in the non-settlement area, and the first limiting boss is disposed between the corresponding two adjacent transition sleepers.
6. The settlement adjusting method suitable for the CRTS II type slab ballastless track according to any one of claims 1-4, wherein the height of the limit bosses is higher than the height of the top surface of the first track slab after the limit bosses are arranged, that is, after the first track slab is correspondingly arranged in the settlement area, the top of each limit boss extends out of the top surface of the corresponding first track slab.
7. The settlement adjusting method for the CRTS II type slab ballastless track according to any one of claims 1-4, wherein in the step S5, the isolation layer is geotextile with a certain thickness.
8. The settlement adjusting method for the CRTS II type slab ballastless track according to any one of claims 1-4, wherein in step S9, before resin is poured, resin pouring bags are correspondingly arranged between the first track slab and the limiting bosses, so that the resin pouring bags are flatly adhered to the side walls of the first track slab and the limiting bosses.
9. The settlement adjusting method for a CRTS ii type slab ballastless track of claim 8, wherein in step S9, after the resin infusion bag is set, a foam side stop and a protection pad are installed in the gap between two adjacent track slabs corresponding to the limit boss.
10. The settlement adjusting method for the CRTS II-type slab ballastless track according to any one of claims 1 to 4, wherein in step S2, before the cutting of the steel rail, the second track slab in the undeposited area is pretreated, and the treatment process is as follows:
and carrying out bar planting and anchoring on the end part of the second track plate at the junction of the undeposited area and the subsided area, so that the second track plate at the end part of the undeposited area is tightly fixed with the base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310397.7A CN110106751B (en) | 2019-04-17 | 2019-04-17 | Settlement adjustment method suitable for CRTS II type plate ballastless track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310397.7A CN110106751B (en) | 2019-04-17 | 2019-04-17 | Settlement adjustment method suitable for CRTS II type plate ballastless track |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110106751A CN110106751A (en) | 2019-08-09 |
| CN110106751B true CN110106751B (en) | 2020-10-02 |
Family
ID=67485558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910310397.7A Active CN110106751B (en) | 2019-04-17 | 2019-04-17 | Settlement adjustment method suitable for CRTS II type plate ballastless track |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110106751B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565448B (en) * | 2019-09-20 | 2024-03-12 | 中铁二院工程集团有限责任公司 | Liftable ballastless track structure and adjusting method thereof |
| CN110629594A (en) * | 2019-10-23 | 2019-12-31 | 西南交通大学 | Large-adjustment-quantity plate type ballastless track and height adjustment method thereof |
| CN112030630A (en) * | 2020-09-27 | 2020-12-04 | 武汉比邻科技发展有限公司 | Grouting bag for ballastless track adjusting layer and using method thereof |
| CN113737576A (en) * | 2021-09-13 | 2021-12-03 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Plate type ballastless track structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100097337A (en) * | 2009-02-26 | 2010-09-03 | 한국철도기술연구원 | Speedy recovering method for concrete track |
| CN202945512U (en) * | 2012-12-11 | 2013-05-22 | 中铁二十局集团有限公司 | Device for replacing plate-type ballastless track reinforced concrete base plate |
| CN103306167A (en) * | 2012-03-13 | 2013-09-18 | 欧阳炎 | Double-layer bidirectional pre-tensioned track plate |
| CN103790083A (en) * | 2014-02-26 | 2014-05-14 | 中铁五局（集团）有限公司 | Construction technology of self-compacting concrete filling layer of plate type ballastless track of high-speed railway |
| CN104480802A (en) * | 2014-11-20 | 2015-04-01 | 中铁八局集团有限公司 | Construction method of CRTS III plate type ballastless track |
| CN105200868A (en) * | 2015-09-14 | 2015-12-30 | 中国铁道科学研究院金属及化学研究所 | Novel slab ballastless track structure |
| CN107059506A (en) * | 2017-05-16 | 2017-08-18 | 中国铁道科学研究院铁道建筑研究所 | A kind of plate-type ballastless track track plates replacing options |
| CN108385454A (en) * | 2018-03-07 | 2018-08-10 | 中国铁道科学研究院铁道建筑研究所 | A kind of railway plate-type ballastless track working drawing review operational method |
| CN108385451A (en) * | 2018-03-07 | 2018-08-10 | 中国铁道科学研究院铁道建筑研究所 | Board-like ballastless track boards replacing options under a kind of special operation condition |
| CN109183530A (en) * | 2018-09-29 | 2019-01-11 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of interim overhead device of route for non-fragment orbit Disease Treatment and method |
-
2019
- 2019-04-17 CN CN201910310397.7A patent/CN110106751B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100097337A (en) * | 2009-02-26 | 2010-09-03 | 한국철도기술연구원 | Speedy recovering method for concrete track |
| CN103306167A (en) * | 2012-03-13 | 2013-09-18 | 欧阳炎 | Double-layer bidirectional pre-tensioned track plate |
| CN202945512U (en) * | 2012-12-11 | 2013-05-22 | 中铁二十局集团有限公司 | Device for replacing plate-type ballastless track reinforced concrete base plate |
| CN103790083A (en) * | 2014-02-26 | 2014-05-14 | 中铁五局（集团）有限公司 | Construction technology of self-compacting concrete filling layer of plate type ballastless track of high-speed railway |
| CN104480802A (en) * | 2014-11-20 | 2015-04-01 | 中铁八局集团有限公司 | Construction method of CRTS III plate type ballastless track |
| CN105200868A (en) * | 2015-09-14 | 2015-12-30 | 中国铁道科学研究院金属及化学研究所 | Novel slab ballastless track structure |
| CN107059506A (en) * | 2017-05-16 | 2017-08-18 | 中国铁道科学研究院铁道建筑研究所 | A kind of plate-type ballastless track track plates replacing options |
| CN108385454A (en) * | 2018-03-07 | 2018-08-10 | 中国铁道科学研究院铁道建筑研究所 | A kind of railway plate-type ballastless track working drawing review operational method |
| CN108385451A (en) * | 2018-03-07 | 2018-08-10 | 中国铁道科学研究院铁道建筑研究所 | Board-like ballastless track boards replacing options under a kind of special operation condition |
| CN109183530A (en) * | 2018-09-29 | 2019-01-11 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of interim overhead device of route for non-fragment orbit Disease Treatment and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110106751A (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110106751B (en) | Settlement adjustment method suitable for CRTS II type plate ballastless track | |
| CN102926299B (en) | Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device | |
| CN104131498B (en) | A kind of for curved section sedimentation non-fragment orbit lifting restorative procedure | |
| CN103485288B (en) | A kind ofly pass through both wired double-deck jacking culvert construction technology | |
| CN111676819A (en) | Jacking construction method for combined type temporary beam continuous reinforced line large-span frame structure bridge | |
| CN109235292A (en) | Railroad bridge changes beam process and changes girder system system | |
| CN111576106A (en) | Construction method for rapidly pushing and replacing ballastless track structure of passenger special line | |
| CN111663385A (en) | Construction method for completing rapid restoration of settlement of integral ballast bed in skylight period | |
| CN105908583B (en) | System for replacing ballast track bed of tunnel with ballastless track under condition of uninterrupted driving | |
| CN111270616A (en) | Off-line construction and capping beam jacking system and construction method for lower structure of temporary bridge of railway | |
| CN110258217A (en) | The horizontal lift beam overhead transmission line construction method of prestressing force | |
| CN101838967B (en) | Construction technology of ballast bed of bridge double-block ballastless track | |
| CN209975279U (en) | Settlement adjustment structure suitable for CRTS II type plate ballastless track | |
| CN113931212A (en) | Road and bridge transition section structure for tramcar and construction method thereof | |
| CN212714296U (en) | Box type roadbed and bridge transition structure | |
| CN105926381B (en) | Method for replacing ballast track bed of tunnel with ballastless track under condition of uninterrupted driving | |
| CN112252087A (en) | Precast slab ballast bed construction method | |
| CN117758549A (en) | Construction process of ballastless track of urban railway | |
| CN217324965U (en) | Face track laying base bridge that combines forever | |
| CN117107562A (en) | Method for replacing high-speed rail curve super-high section ballastless track plate | |
| CN117107563A (en) | Method for replacing ultra-high-section ballastless track slab of high-speed railway foundation Duan Quxian | |
| CN113026435B (en) | Subway shield interval plate type ballastless track construction method | |
| RU2293810C1 (en) | Reinforced concrete sleeper | |
| CN213772737U (en) | Strut type straight-paving slab ballastless track system | |
| CN212505689U (en) | Reinforced integrally-built crossing plate for railway special line and line rail fixing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |