CN212505632U - Assembly type continuous floating plate track structure adaptive to traveling direction - Google Patents
Assembly type continuous floating plate track structure adaptive to traveling direction Download PDFInfo
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- CN212505632U CN212505632U CN202022085317.3U CN202022085317U CN212505632U CN 212505632 U CN212505632 U CN 212505632U CN 202022085317 U CN202022085317 U CN 202022085317U CN 212505632 U CN212505632 U CN 212505632U
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Abstract
The utility model discloses an assembled continuous floating plate track structure that adapts to driving direction, including lower part basis and floating plate structure, the floating plate structure includes the floating plate of polylith overlap joint together, and each floating plate all includes floating plate main part and the rectangular form dislocation of integration setting in the floating plate main part, and to arbitrary adjacent two floating plates, each floating plate all sets up the dislocation on the one side that is close to another floating plate, and each dislocation all extends towards the direction that is close to another floating plate, and wherein the dislocation on one floating plate is shelved on another dislocation of floating plate; the extending direction of the upper staggered platform on the floating plate main body is consistent with the running direction of a train, and the thickness of the upper staggered platform is smaller than that of the lower staggered platform. The utility model provides high floating plate's construction precision and stability satisfy the special damping demand of track traffic, can improve track structure's stability when reducing site operation work load.
Description
Technical Field
The utility model belongs to the railway track structure field, more specifically relates to an assembled floating slab track structure.
Background
The vibration reduction design of the rail transit engineering is the key point and the difficulty of the design of a rail system. In general, the vibration reduction level is divided into three levels of medium vibration reduction, high vibration reduction and special vibration reduction according to the environmental evaluation prediction superstandard. Wherein, the special damping measure adopts a steel spring floating plate damping track bed.
The floating plate track in the traditional urban rail transit subway project is widely applied, the design technical scheme is mature and reliable, but the running speed of the vehicle does not exceed 100km/h, and the axle weight of the vehicle does not exceed 16 t.
With the rapid development of urban rail transit, the maximum running speed of a train reaches 100-160 km/h, the axle weight of the train is 17t, the running speed of the train is greatly improved compared with that of the traditional urban rail transit, the axle weight is increased, and higher requirements are provided for the construction precision and stability of the floating slab track bed.
Patent CN110700023A proposes a construction method of an integral track bed of a steel spring floating slab based on rail engineering, and the construction method is based on the steel spring floating slab track bed applied to urban rail transit in China, and mostly adopts a short sleeper or sleeper-free cast-in-place track bed mode. The cast-in-situ ballast bed has large field construction and concrete pouring amount, and brings a series of problems of environmental pollution, large labor amount, long construction period and the like. In addition, because the short sleepers are of independent structures, fixed connection modes are not arranged among the sleepers, the interaction force among the steel rails is transmitted only by the concrete of the track bed, and the geometric behavior holding capacity of the track is poor. The ballastless track bed of the steel spring floating slab after construction has large deviation of the applied track distance, uneven distribution of the bottom slope of the track and large work load of fine adjustment of the track, and influences the stable operation of the train.
Patent CN203475237U proposes a prefabricated steel spring floating plate, which transfers the transverse force between the floating plates through end bosses, and the floating plates are connected in a hinged manner. Although the prefabricated track plate is adopted in the scheme, the floating plate is difficult to replace in later maintenance and repair due to the hinged mode. The articulated mode of tip makes prefabricated floating plate can not conveniently be taken out when taking place the disease, needs the polylith floating plate of lifting simultaneously, just can realize that floating plate changes the maintenance, and work load is big. The vertical force of the transition position of the floating plate in the scheme is provided by hinging, the stress of a hinging device of the floating plate is not friendly, and potential safety hazards exist.
Patent CN204385564U proposes a lapping type floating track bed, which eliminates the traditional hinge mode at the transition of the floating slab, and transfers the vertical load of the train through the lapping platform of two track bed slabs. The lap joint of the fixed floating slab of bolt department of through-hole about this scheme adopted, but because the space height of floating slab below is only 20 ~ 40mm, the bolt of through-hole is during installation and later maintenance, and floating slab below does not have the condition of construction operation, therefore this fixed mode still has the defect. In addition, the traditional hinging mode adopted by the floating slab track bed is cancelled in the scheme, the floating slab platform is utilized to transmit vertical force, the transmission of the transverse force and the longitudinal force at the transition position of the floating slab is completed by through hole bolts, and under the action of large train load fatigue, the slender bolts are easy to damage, the stress environment is not friendly, and potential safety hazards exist. Meanwhile, in the scheme, the thicknesses of the upper and lower layers of abutment platforms are kept consistent, when the train runs in two directions, the bending moment borne by the lower layer of abutment platform is larger, and the lower part of abutment platform is easy to crack at the disassembling position, so that the running is subjected to potential safety hazards.
Therefore, in order to improve the construction precision and stability of the floating slab, on the premise of meeting the special vibration reduction requirement of rail transit, the assembled floating slab rail structure adaptive to the traveling direction is provided, so that the stability of the rail structure is improved while the field construction workload is reduced, and the rail structure is in line with the future development trend.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides an adaptation vehicle direction's continuous floating plate track structure of assembled, it has improved the construction precision and the stability of floating plate, satisfies the special damping demand of track traffic, can improve track structure's stability when reducing site operation work load.
In order to achieve the above object, according to an aspect of the present invention, there is provided an assembled continuous floating slab track structure adapted to a traveling direction, comprising a lower foundation and a floating slab structure disposed on the lower foundation through an elastic vibration isolator, wherein there is a gap between the floating slab structure and the lower foundation, the floating slab structure comprises a plurality of floating slabs overlapped together, each floating slab comprises a floating slab main body and a slab staggering integrally disposed on the floating slab main body, and the slab staggering comprises:
for any two adjacent floating plates, each floating plate is provided with the staggered platform on one side close to the other floating plate, each staggered platform extends towards the direction close to the other floating plate, and the staggered platform on one floating plate is rested on the staggered platform on the other floating plate; the upper staggered platform and the lower staggered platform are respectively an upper staggered platform and a lower staggered platform, the extending direction of the upper staggered platform on the floating plate main body is consistent with the running direction of a train, and the distance from the upper surface to the lower surface of the upper staggered platform, namely the thickness of the upper staggered platform is h1The distance from the upper surface to the lower surface of the lower dislocation, namely the thickness thereof is h2，h1＜h2The upper dislocation is provided with an upper tendon planting hole, and the lower dislocationThe platform is provided with a lower rib planting hole corresponding to the upper rib planting hole, and the upper staggered platform and the lower staggered platform are fixedly connected in a rib planting mode in the upper rib planting hole and the lower rib planting hole.
Preferably, the lower part foundation is provided with two drainage ditches, the floating plate structure is positioned between the two drainage ditches, and the longitudinal direction of each drainage ditch is consistent with the longitudinal direction of the lower part foundation.
Preferably, two rows of rail bearing platforms are arranged at the top end of each floating slab main body, and the longitudinal direction of each row of rail bearing platform is consistent with the longitudinal direction of the lower foundation.
Preferably, two rows of vibration isolator mounting holes are formed in each floating slab main body, the longitudinal direction of each row of vibration isolator mounting holes is consistent with the longitudinal direction of the lower foundation, the number of the vibration isolator mounting holes in each row is half of the number of the rail bearing platforms in each row, and a vibration isolator mounting hole is formed between every two adjacent rail bearing platforms in each row.
Preferably, an elastic cushion layer is arranged between the upper staggered platform and the lower staggered platform, and through holes are arranged on the elastic cushion layer at positions corresponding to the upper tendon planting holes and the lower tendon planting holes and serve as middle tendon planting holes.
Preferably, the vertical rigidity of the elastic cushion layer is not less than that of the elastic vibration isolator.
Preferably, h1/h2＝0.5～0.75。
Preferably, there is a plate seam between each said dislocation and the floating plate body adjacent to the dislocation.
Preferably, the top end of the lower foundation is further provided with two rows of transverse limiting supports, the floating plate structure is located between the two rows of transverse limiting supports, the longitudinal direction of each row of transverse limiting supports is consistent with the longitudinal direction of the lower foundation, and each transverse limiting support is abutted to the floating plate main body so as to limit the transverse displacement of the floating plate main body.
Preferably, the upper bar planting hole and the lower bar planting hole are a through hole and a blind hole respectively.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
1) through the utility model discloses an implement, can improve the construction precision of floating slab track bed, improve the geometric shape position holding power of rail and sleeper to adapt to the special damping demand of higher speed (100 ~ 160km/h), fill the blank of the special damping track structure of urban area railway, also can utilize on circuits such as intercity, subway simultaneously.
2) By adopting the assembled floating slab track structure, the floating slabs are prefabricated in a factory, the concrete pouring amount of a construction site is reduced, and the construction operation efficiency is improved. Meanwhile, the precision of the prefabricated floating slab is obviously improved compared with that of a cast-in-place floating slab, so that the construction precision is improved, the stability of a track structure is improved, and the running stability of a train is improved.
3) The short floating plate is assembled and consolidated on site to form a long floating plate structure, so that the stability of the track structure is improved, and the requirement of special vibration reduction is met; and the short floating plate has the characteristics of small volume and light weight, and can improve the flexibility of site operation and the convenience of later-stage maintenance and repair.
4) The mode of embedding the reinforcing bar is adopted, the reinforcing bar embedding holes in the floating plates are penetrated, and the adjacent floating plates are fixedly connected, so that the installation strength of the staggered joint of the track of the floating plates is more reliable, and the assembly and installation efficiency of the floating plates is improved.
5) The embedded steel bars connect and fix the upper and lower staggered platforms through the embedded steel bar holes of the upper and lower staggered platforms. The adjacent floating plates are implanted with reinforcing steel bars and are fixedly connected to form a long floating plate structure, and a plurality of short floating plates are assembled to form the long floating plate structure, so that the integrity of the track structure of the floating plates is improved.
6) The vibration isolation cushion layer is arranged between the upper staggered platform and the lower staggered platform to buffer the vertical interaction force between the adjacent floating plates, so that the concrete extrusion damage at the interface of the upper staggered platform and the lower staggered platform is avoided.
7) The upper staggered platform and the lower staggered platform of the floating slab adopt a proportional structure with a thin upper part and a thick lower part, so that the adaptability of the structural strength of the assembly part of the staggered platforms to the load of a one-way traveling crane can be further improved, the structural strength of the staggered platforms at the lower part is improved, the load characteristic that the train passes through the one-way traveling crane on a line is met, and the utilization rate of the strength of a concrete material is improved.
8) The two sides of the middle part or the end part of the floating plate are provided with the transverse limiting supports, so that the transverse displacement of the floating plate when a train passes at a high speed or in a curve is limited, the transmission of the transverse force of the track to the position where the steel bar is implanted is reduced, the stress environment of the implanted steel bar is improved, and the overall reliability of the track structure is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an exploded schematic view of the present invention;
fig. 3 is a side view of the staggered platform assembly of the present invention;
FIG. 4 is a schematic cross-sectional view of the staggered platform assembly of the present invention;
FIG. 5 is a view of the floating plate at the end of the present invention;
FIG. 6 is a view of the floating plate in the middle of the present invention;
fig. 7 is a schematic view of the elastic cushion of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 7, an assembled continuous floating slab track structure adapted to a traveling direction comprises a lower foundation 1 and a floating slab structure disposed on the lower foundation 1 through elastic vibration isolators, wherein a slab lower gap 102 exists between the floating slab structure and the lower foundation 1, the floating slab structure comprises a plurality of floating slabs overlapped together, each floating slab comprises a floating slab main body and a cuboid staggered platform integrally disposed on the floating slab main body, two columns of vibration isolator mounting holes 204 are disposed on the floating slab main body, each column of vibration isolator mounting holes 204 are longitudinally consistent with the lower foundation 1, each vibration isolator mounting hole 204 is internally provided with an elastic vibration isolator, the floating slab is supported through the elastic vibration isolator, and:
for any two adjacent floating plates, each floating plate is provided with the staggered platform on one side close to the other floating plate, each staggered platform extends towards the direction close to the other floating plate, and the staggered platform on one floating plate is rested on the staggered platform on the other floating plate; the upper and lower stages are an upper stage 206 and a lower stage 207 (the upper stage 206 is located above the lower stage 207, and the two stages are to be lapped over each other), the top of the upper stage 206 is preferably flush with the top of the floating plate body, the top of the lower stage 207 is preferably flush with the bottom of the floating plate body, the extending direction of the upper stage 206 on the floating plate body is consistent with the train running direction, and the distance from the upper surface to the lower surface of the upper stage 206, that is, the thickness of the upper stage 206 is h1The distance from the upper surface to the lower surface of the lower dislocation 207, i.e., the thickness thereof, is h2，h1＜h2Preferably, h1/h20.5 to 0.75, preferably h1：h22: 3. 2: 4 or 3: 4; the floating plate upper stage 206 and lower stage 207 are set to have a thickness "thin on top and thick on bottom". Because the train of driving on the actual line is one-way operation usually for floating plate track structure, consequently right the utility model provides an asymmetric track structure form, the thickness of upper portion dislocation platform 206, lower part dislocation platform 207 department adopts the principle of "thin lower thickness" to set up, is favorable to improving the adaptability of track structure to one-way driving load, makes the utility model provides an assembled track structure suits with actual driving direction.
An upper rib planting hole 205 is formed in the upper staggered platform 206, a lower rib planting hole 209 is formed in the position, corresponding to the upper rib planting hole 205, of the lower staggered platform 207, and the upper staggered platform 206 and the lower staggered platform 207 are fixedly connected in a rib planting mode through the upper rib planting hole 205 and the lower rib planting hole 209.
Referring to fig. 1, 2, 5 and 6, the floating plate of the present invention can have three structural types: a first end floating plate 201 (fig. 5), an intermediate floating plate 202 (fig. 6) and a second end floating plate (not shown in the figures). The intermediate floating plate 202 is positioned between the first end floating plate 201 and the second end floating plate; the first end floating plate 201 comprises a first floating plate main body and an upper staggered platform 206, and the upper staggered platform 206 of the first end floating plate 201 is integrally arranged on the upper part of one side of the first end floating plate 201 main body close to the middle floating plate 202; the second end floating slab comprises a second floating slab main body and a lower slab staggering 207, and the lower slab staggering 207 of the second end floating slab is integrally arranged at the lower part of one side, close to the middle floating slab 202, of the second end floating slab main body;
the intermediate floating plate 202 comprises an intermediate floating plate 202 main body, an upper dislocation 206 and a lower dislocation 207, wherein the lower dislocation 207 of the intermediate floating plate 202 is arranged at the lower part of the side of the intermediate floating plate 202 main body close to the first end floating plate 201, and the upper dislocation 206 of the intermediate floating plate 202 is arranged at the upper part of the side of the intermediate floating plate 202 main body close to the first end floating plate 201. The intermediate floating plate 202 may be provided in a plurality of pieces and have the same structure.
The upper slab staggering 206 of the first end floating slab 201 is in lap joint with the lower slab staggering 207 of the middle floating slab 202 and then is fixedly connected in a bar planting mode, the two adjacent middle floating slabs 202 are in lap joint with the upper slab staggering 206 and then are fixedly connected in a bar planting mode, and the upper slab staggering 206 of the middle floating slab 202 is in lap joint with the lower slab staggering 207 of the second end floating slab and then is fixedly connected in a bar planting mode.
The floating plates of the utility model can be prefabricated in factories, one end of the end floating plate 201 is flat and the other end is provided with a staggered platform for assembling the floating plates; two ends of the middle floating slab 202 are provided with staggered platforms for assembling the floating slabs. Therefore, the floating plate of the present invention has a step on the upper and/or lower portion of the side of the floating plate body. If there is only one slab staggering on the floating plate main body, it is the end floating plate 201, if there are two slab staggering, it is the middle floating plate 202, two slab staggering on one middle floating plate 202 can not be both the upper slab staggering 206 or the lower slab staggering 207 (one side of the floating plate main body is the upper slab staggering 206 and the opposite side is the lower slab staggering 207), nor can two slab staggering on two end floating plates 201 be both the upper slab staggering 206 or the lower slab staggering 207 (one of the floating plate main body is the upper slab staggering 206, and the other is the lower slab staggering 207).
Further, be provided with two escape canals 101 on the basis of lower part 1, floating plate structure is located these two between the escape canal 101, every escape canal 101 vertically all with the vertical unanimity of basis 1 of lower part, escape canal 101 is favorable to quick drainage, guarantees the safety that the train traveles on track structure.
Further, two rows of rail bearing platforms 203 are arranged at the top end of each floating slab main body, the longitudinal direction of each row of rail bearing platforms 203 is consistent with the longitudinal direction of the lower foundation 1, in addition, the number of vibration isolator mounting holes 204 of each row is half of the number of the rail bearing platforms 203 of each row, and vibration isolator mounting holes 204 are arranged between two adjacent rail bearing platforms 203 of each row, so that steel rails can be laid conveniently, and vibration reduction can be realized better.
Further, an elastic cushion layer 3 is arranged between the upper staggered platform 206 and the lower staggered platform 207, and through holes are arranged at positions of the elastic cushion layer 3 corresponding to the upper tendon-planting holes 205 and the lower tendon-planting holes 209 to serve as middle tendon-planting holes 301. The vertical rigidity of the elastic cushion layer 3 is not less than that of the elastic vibration isolator, the vertical interaction of the slab staggering is relieved, concrete at the slab staggering position is prevented from cracking and being damaged, and the service life of the track structure is prolonged.
Further, the top end of the lower foundation 1 is further provided with two rows of transverse limiting supports 5, the floating plate structure is located between the two rows of transverse limiting supports 5, the longitudinal direction of each row of transverse limiting supports 5 is consistent with the longitudinal direction of the lower foundation 1, and each transverse limiting support 5 is abutted to the floating plate main body. The horizontal limit support 5 limits the horizontal displacement of the floating plate when the train passes through a curve at a high speed, the horizontal limit support 5 only limits the horizontal displacement of the floating plate, the floating plate can still vertically move, the vibration reduction of the track structure is realized by the aid of the working of the vibration isolator, and special vibration reduction requirements are met. Set up horizontal limit support 5 and can improve the lateral stability of assembled floating plate structure, reduce the horizontal load that implants reinforcing bar 4 and receive simultaneously, further optimize the atress condition of implanting reinforcing bar 4, improve track structure's reliability, reinforcing track structure's wholeness. The transverse limiting support 5 is longitudinally arranged outside the floating plate along the rail, and can be arranged in the middle of the side surface of the floating plate or at the end part of the side surface of the floating plate.
Further, the upper rib planting hole 205 and the lower rib planting hole 209 are a through hole and a blind hole respectively, so that the implanted steel bar 4 can be conveniently placed and the implanted steel bar glue can be conveniently poured to fixedly connect the adjacent floating plates. The number of the embedded steel bars 4 (the number of the upper embedded steel bar holes 205 and the lower embedded steel bar holes 209) at the staggered position of the assembled floating plate can be adjusted according to actual line conditions such as different line speed grades and vehicle axle weights. The upper reinforcing bar planting holes 205 are through holes with rough interfaces, and the planting reinforcing bars 4 penetrate through the upper reinforcing bar planting holes 205 and are planted into the lower reinforcing bar planting holes 209 of the lower dislocation 207, so that the upper dislocation 206 and the lower dislocation 207 are fixedly connected. The plurality of floating plates form a long floating plate in the assembling and solidifying mode, and the integrity of the track structure of the floating plates is enhanced.
Further, there is a plate gap 208 between each of the stages and the floating plate body adjacent to the stage. The plate gap 208 is preferably 20 mm-50 mm, and the floating plate is prevented from being damaged by extrusion when the floating plate longitudinally displaces under the load of the train.
The utility model discloses a track structure designs to the condition of one-way driving, and the extending direction homogeneous phase of all upper portion wrong platform 206 to all the same with train driving direction, and the thickness of upper portion wrong platform 206 is less than the thickness of lower part wrong platform 207, is favorable to improving the adaptability of track structure to one-way driving load.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an adaptation driving direction's continuous floating plate rail structure of assembled, its characterized in that includes the lower part basis and places through elastic vibration isolator the floating plate structure on the basis of lower part, floating plate structure with there is space under the board between the basis of lower part, floating plate structure includes the floating plate that the polylith overlap joint is in the same place, every floating plate all includes floating plate main part and integration setting and is in the staggered platform of the cuboid form in the floating plate main part to:
for any two adjacent floating plates, each floating plate is provided with the staggered platform on one side close to the other floating plate, each staggered platform extends towards the direction close to the other floating plate, and the staggered platform on one floating plate is rested on the staggered platform on the other floating plate; the upper staggered platform and the lower staggered platform are respectively an upper staggered platform and a lower staggered platform, the extending direction of the upper staggered platform on the floating plate main body is consistent with the running direction of a train, and the distance from the upper surface to the lower surface of the upper staggered platform, namely the thickness of the upper staggered platform is h1The distance from the upper surface to the lower surface of the lower dislocation, namely the thickness thereof is h2，h1＜h2The upper staggered platform is provided with an upper rib planting hole, the lower staggered platform is provided with a lower rib planting hole corresponding to the position of the upper rib planting hole, and the upper staggered platform and the lower staggered platform are fixedly connected in a rib planting mode in the upper rib planting hole and the lower rib planting hole.
2. A fabricated continuous floating plate track structure adapted to a driving direction according to claim 1, wherein said lower base is provided with two drainage gutters, said floating plate structure is located between said two drainage gutters, and a longitudinal direction of each of said drainage gutters coincides with a longitudinal direction of said lower base.
3. The structure of claim 1, wherein two rows of rail receiving platforms are disposed at the top end of each floating plate body, and the longitudinal direction of each row of rail receiving platforms is identical to the longitudinal direction of the lower base.
4. The fabricated continuous floating slab track structure adapted to the traveling direction of claim 3, wherein two rows of vibration isolator mounting holes are formed in each floating slab main body, the longitudinal direction of each row of vibration isolator mounting holes is identical to the longitudinal direction of the lower foundation, the number of vibration isolator mounting holes in each row is half of the number of rail bearing platforms in each row, and a vibration isolator mounting hole is formed between two adjacent rail bearing platforms in each row.
5. The continuous floating slab track structure adapted to the traveling direction of a vehicle according to claim 1, wherein an elastic cushion layer is provided between the upper slab staggering and the lower slab staggering, and the elastic cushion layer is provided with through holes as middle slab-planting holes at positions corresponding to the upper slab-planting holes and the lower slab-planting holes.
6. The fabricated continuous floating slab track structure adapted to the driving direction of claim 5, wherein the vertical stiffness of the elastic cushion layer is not less than the vertical stiffness of the elastic vibration isolator.
7. A fabricated continuous floating slab track structure adapted to the direction of travel according to claim 1 characterised in that h1/h2＝0.5～0.75。
8. A direction of travel adapted fabricated continuous floating slab track structure as claimed in claim 1 wherein there is a slab gap between each said slab and the body of the floating slab adjacent to the slab.
9. The assembled continuous floating slab track structure adapting to the driving direction of a vehicle according to claim 1, wherein the top end of the lower base is further provided with two rows of transverse limiting supports, the floating slab structure is positioned between the two rows of transverse limiting supports, the longitudinal direction of each row of transverse limiting supports is consistent with the longitudinal direction of the lower base, and each transverse limiting support is abutted with the floating slab main body to limit the transverse displacement of the floating slab main body.
10. The continuous floating slab track structure adapted to the traveling direction of a vehicle according to claim 1, wherein said upper and lower reinforcing bar-planting holes are through-holes and blind-holes, respectively.
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| CN202022085317.3U CN212505632U (en) | 2020-09-21 | 2020-09-21 | Assembly type continuous floating plate track structure adaptive to traveling direction |
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| CN202022085317.3U CN212505632U (en) | 2020-09-21 | 2020-09-21 | Assembly type continuous floating plate track structure adaptive to traveling direction |
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