CN219117851U - A three-dimensional reinforcement device for ballastless track sleepers of high-speed railway - Google Patents

Abstract

The utility model discloses a three-dimensional reinforcing device for a sleeper of a ballastless track of a high-speed railway, which comprises a claw-type steel frame, self-locking bolts and a planted bar anchor. The utility model solves the practical problems that the existing reinforcing device can not realize the transverse, longitudinal and vertical three-dimensional reinforcement, is not suitable for the reinforcing requirement of the strip sleeper structure and the like, and is suitable for the structural reinforcement during the replacement or emergency repair of the ballastless track sleeper and the switch sleeper of the high-speed railway.

Description

A three-dimensional reinforcement device for ballastless track sleepers of high-speed railway

technical field

The utility model relates to the technical field of maintenance and repair of ballastless tracks of high-speed railways, in particular to a three-dimensional reinforcement device for ballastless track sleepers of high-speed railways.

Background technique

The turnout is the weak link of the high-speed railway track structure and the key equipment to limit the passing speed of the train. The ballastless track structure in the turnout area is divided into the buried ballastless track of the long sleeper and the slab ballastless track in the turnout area. The ballastless track structure of the buried long sleeper is the most widely used ballastless track structure in the turnout area in my country. The long sleeper embedded ballastless track structure in the turnout area is composed of turnout rail parts, fasteners, turnout sleepers, track bed slabs and concrete support layers/base slabs from top to bottom. The concrete sleeper in the turnout area is an important part of the turnout structure. On the one hand, it transmits the train load borne by the turnout rail parts to the lower foundation. On the other hand, it maintains the gauge, direction, and height of the turnout area. Pros and cons have a greater impact on the entire turnout system.

With the increase of service time, the damage of individual sleepers of the ballastless track in the turnout area of some lines has appeared. Once the sleeper damage reaches the failure level, the failed sleeper needs to be replaced. Currently, sleeper replacement during operation requires two skylights to complete. The first skylight completes the removal of the concrete of the track bed around the sleeper, and the second skylight completes the replacement of the switch sleeper and the restoration of the concrete of the track bed. When the concrete of the track bed around the sleeper is chiseled out, the sleeper loses the restraint and limiting effect of the concrete of the surrounding track bed, and cannot meet the traffic demands of high-speed trains the next day. In order to prevent the sleeper from shifting, the existing method is to fill ballast around the sleeper and temporarily reinforce the sleeper to be replaced. However, this approach is similar to the reinforcement of ballasted track sleepers. It not only requires a lot of work to lay and recover ballast, but also changes the original stress structure of ballastless track, which has a great impact on the track structure. Therefore, during the renovation period, the speed limit is generally 80km/h, which greatly interferes with the line operation.

CN203654109U proposes a track slab laying positioning frame, which is mainly used to prevent the track slab from floating when pouring mortar, which cannot meet the requirements of the lateral and longitudinal limit of the switch sleeper; Compression limit devices, these two devices can only achieve vertical compression, also can not meet the needs of the lateral and longitudinal limit of the switch sleeper, and can not be suitable for the installation of the switch sleeper; CN 108004855 B proposes a plate type without A compacting and limiting device and method for a ballast track structure, the device is suitable for a slab ballastless track structure, but not for reinforcement of a cast-in-place ballastless track sleeper structure. Filling the cavity at the bottom of the compaction limit device by grouting and leveling the filling bag is suitable for flat structures such as base plates/support layers, but cannot be used for leveling the concrete chiseled surface of the ballast bed. Simultaneously, this device can only realize vertical compression and lateral spacing, and cannot satisfy the demand of longitudinal spacing.

Generally speaking, at present, the track slab reinforcement device has been applied to the remediation construction of the slab ballastless track structure, but it is still blank in the field of three-dimensional reinforcement of sleepers. The following problems mainly exist in the application of the existing reinforcement device:

1. The existing reinforcement device is mainly designed for the crimping limit of the track plate of the slab ballastless track, which needs to be assembled online, and cannot be applied to the reinforcement requirements of the long sleeper structure;

2. Most of the withholding of the track structure is vertical, and the lateral limit is supplemented, so the longitudinal limit of the track structure cannot be realized;

3. The existing reinforcement device is installed on the flat support layer or the surface of the base plate, which cannot be stably installed on uneven surfaces such as concrete chiseled surfaces;

4. The existing bar reinforcement method is mainly vertical bar planting, and the lateral component force of the reinforcement device is provided by the shear strength of the steel bar, which cannot meet the lateral force of the sleeper, especially the switch sleeper in the turnout area during the replacement construction.

Therefore, in view of the lack of horizontal, vertical and vertical three-dimensional reinforcement devices for sleepers in the daily maintenance and repair of ballastless track sleepers in high-speed railways and the emergency replacement of embedded switch sleepers in turnout areas, in order to ensure the stability of switch sleepers and the smoothness of the track, the To meet the needs of high-speed trains passing the next day, it is urgent to design a three-dimensional reinforcement device for high-speed railway ballastless track embedded switch sleepers.

Utility model content

In view of this, the utility model proposes a three-dimensional reinforcement device for ballastless track sleepers of high-speed railways, especially a process of maintenance and repair of embedded sleepers of ballastless tracks of high-speed railways during the operation period and emergency replacement and repair of embedded turnout sleepers in turnout areas. The specific technical scheme of the three-dimensional reinforcement device used in is as follows:

A three-dimensional reinforcement device for a ballastless track sleeper of a high-speed railway, comprising a claw-type steel frame, self-locking bolts, and planted reinforcement anchors, the claw-type steel frame including a T-shaped base, a vertical L-shaped claw body, and two transverse L-shaped claw body, the upper part of the first base of the T-shaped base is vertically connected to the lower vertical bar of the vertical L-shaped claw body, and the upper cross bar of the vertical L-shaped claw body is provided with a Hole 1 of the lower vertical bar is provided with hole 2 parallel to the upper horizontal bar; the two sides of the lower vertical bar perpendicular to the direction of the upper horizontal bar are respectively connected to a horizontal L The longitudinal rod of the horizontal claw body, the horizontal rod of the horizontal L-shaped claw body extends in the same direction as the upper horizontal rod, and the horizontal rod is provided with a hole three parallel to the longitudinal rod; vertically connects the second The second base of a base is parallel to the upper cross bar and extends away from the upper cross bar; two outer end faces of the first base and one outer end face of the second base Correspondingly, there are vertical holes; the intersection of the first base with the second base and the lower vertical rod is provided with oblique holes, and the oblique holes are downward and away from the first base. The direction of the second base is inclined; the self-locking bolts include a vertical self-locking bolt adapted to the first hole, a horizontal self-locking bolt adapted to the second hole and corresponding to the two holes three Adapted two longitudinal self-locking bolts; the tail of the self-locking bolts is in contact with the corresponding sleeper surface; the anchoring of the planting bars includes three vertical planting bars corresponding to the three vertical holes and An oblique planting reinforcement adapted to the oblique hole; a vertical hole on the surface of the board corresponding to the vertical hole and the oblique hole is provided on the top surface of the track bed, and an oblique hole on the surface of the board is provided. Pass through the corresponding upper and lower holes and screw in the fixing nut on the upper part to anchor the T-shaped base on the concrete of the track bed slab.

By adopting the above-mentioned technical scheme, the device of the utility model is composed of claw-type steel frame, self-locking bolts and planting bar anchorage, and the three-dimensional reinforcement of the sleeper is realized through horizontal, vertical and vertical withholding designs. By adding oblique reinforcement, it can resist the horizontal force component of the sleeper when the high-speed train passes through the turnout. The position of the sleeper is fixed during train operation through self-locking bolts, ensuring the safety and stability of the track structure during sleeper replacement or emergency repair.

Preferably, the claw-type steel frame is welded by rectangular steel pipes, and its chamfers are reinforced by welding reinforcing ribs.

Preferably, the structures of the vertical self-locking bolts, the horizontal self-locking bolts, and the longitudinal self-locking bolts are the same, and each of the self-locking bolts is fixed on the corresponding claw-type steel frame through a threaded sleeve. In the hole, the head of the self-locking bolt is a nut, and the tail is a spherical hinged steel support in contact with the corresponding sleeper surface.

Preferably, a rubber backing plate is pasted on the contact surface between the spherical hinged steel support and the sleeper, and the rubber backing plate closely fits the surface of the sleeper.

Preferably, the rubber backing plate is made of natural rubber NR, high-density polyethylene HDPE, vinyl acetate copolymer EVA, high-density polyethylene and vinyl acetate copolymer mixture HDPE/ One of EVA and thermoplastic elastomer TPEE.

Preferably, the vertical planting bars are perpendicular to the surface of the ballast bed slab, and the oblique planting bars are inclined 45° planting bars.

Preferably, the vertical planting bar is drilled perpendicular to the surface of the ballast bed slab, and the oblique 45° planting bar is drilled at an angle of 45° to the top surface of the ballast bed slab, the allowable deviation is ±5°, and the drilling diameter is 20 ～32mm, drilling depth 200～250mm, the vertical planting bar and the oblique 45° planting bar to be implanted are HRB500 grade threaded steel bars with a diameter of 16～28mm, and the embedded depth of the steel bars is not less than 150mm.

The utility model also proposes a three-dimensional reinforcement method for a ballastless track sleeper of a high-speed railway. The above-mentioned three-dimensional reinforcement device for a ballastless track sleeper of a high-speed railway is applied. The reinforcement method includes the following steps:

(1) Pour self-leveling fast-hardening mortar on the surface of the exposed road bed slab at both ends of the sleeper for leveling;

(2) After the mortar is hardened, drill holes and plant bars at appropriate positions on both sides of the sleeper;

(3) Install the claw-type steel frame after the planting glue is hardened and fix it with fixing nuts;

(4) Then tighten the longitudinal self-locking bolts and horizontal self-locking bolts on both sides synchronously in sequence, and finally tighten the vertical self-locking bolts so that the tails of the self-locking bolts closely fit the sleeper surface.

The above method realizes the leveling of the base by pouring self-leveling quick-hardening mortar on the concrete surface of the ballast bed slab, fixes the claw-type steel frame in the form of planting reinforcement anchorage, and then tightens the longitudinal, transverse and vertical self-locking bolts synchronously in sequence to make the rubber backing plate and the sleeper The surface is tightly fitted to realize the three-dimensional reinforcement of the sleeper and the safety and stability of the track structure. It is easy to disassemble and reusable. It solves the practical problems that the existing reinforcement devices cannot realize horizontal, vertical and vertical three-dimensional reinforcement, and is not suitable for the reinforcement requirements of long sleeper structures. It is suitable for the structure during the replacement of ballastless track sleepers and switch sleepers in high-speed railways or emergency repairs reinforcement.

Preferably, the self-leveling fast-hardening mortar is one of polymer cement mortar, magnesium phosphate cement repair mortar, epoxy resin mortar, and acrylic resin mortar, with a compressive strength of ≥5 MPa in 30 minutes, a compressive strength of ≥20 MPa in 1d, and a compressive strength of ≥20 MPa in 7d Compressive strength ≥ 40MPa.

Preferably, the tail of the self-locking bolt is closely attached to the sleeper surface through a rubber backing plate, and the close fitting is to adjust the distance between the bolt and the sleeper by turning the nut on the head of the self-locking bolt with a torque wrench, and the torque is 100-150N m, and can provide horizontal, vertical and vertical three-dimensional buckle force ≥ 300kN.

The utility model provides a three-dimensional reinforcement device and reinforcement method for ballastless track sleepers of high-speed railways. After comparison and research in engineering practice, it is found that compared with the prior art, it has the following excellent performance:

(1) It can realize three-dimensional reinforcement of sleepers horizontally, vertically and vertically to ensure long-term stability of the track structure during high-speed train operation.

(2) Self-locking bolts are used to avoid bolt loosening caused by track vibration when trains pass by.

(3) The self-locking bolt spherical hinged steel support is pasted with a suitable rubber backing plate, which can effectively avoid structural damage to the concrete contact surface of the sleeper due to excessive torque without affecting the reinforcement effect.

(4) The claw-type steel frame is an integral welded structure, which does not require on-site assembly. The weight of a single reinforcement device is only 25 kg. It is easy to disassemble, has high installation and disassembly efficiency, and can be used repeatedly.

(5) It has a wide range of applications, and is widely used in the three-dimensional reinforcement of sleeper and switch sleeper structures in high-speed railways, general-speed railways and other fields.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the utility model, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Figure 1 is a schematic diagram of the installation of a three-dimensional reinforcement device for a ballastless track sleeper of a high-speed railway.

Fig. 2 is a schematic diagram of a three-dimensional reinforcement device for a ballastless track sleeper of a high-speed railway.

Fig. 3 is a front view of a three-dimensional reinforcing device for a ballastless track sleeper of a high-speed railway.

Fig. 4 is a side view of a three-dimensional reinforcing device for a ballastless track sleeper of a high-speed railway.

Fig. 5 is a top view of a three-dimensional reinforcement device for a ballastless track sleeper of a high-speed railway.

Description of reference signs: 1-first base, 2-lower vertical bar, 3-upper horizontal bar, 4-hole one, 5-hole two, 6-longitudinal bar, 7-horizontal bar, 8-hole three, 9 -Second base, 10-vertical self-locking bolt, 11-horizontal self-locking bolt, 12-longitudinal self-locking bolt, 13-vertical planting bar, 14-oblique planting bar, 15-fixing nut, 16-rectangular Steel pipe, 17-strengthening ribs, 18-nut, 19-spherical hinged steel support, 20-rubber backing plate, 21-self-leveling fast-hardening mortar.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

As shown in Figures 1 to 5, the utility model discloses a three-dimensional reinforcement device for a ballastless track sleeper of a high-speed railway, which includes a claw-type steel frame, self-locking bolts and planted reinforcement anchors.

The claw-type steel frame includes a T-shaped base, a vertical L-shaped claw body and two horizontal L-shaped claw bodies. The upper part of the first base 1 of the T-shaped base is vertically connected to the lower vertical rod of the vertical L-shaped claw body. 2. The upper horizontal bar 3 of the vertical L-shaped claw body is provided with a hole 1 4 parallel to the lower vertical bar 2, and the lower vertical bar 2 is provided with a hole 2 5 parallel to the upper horizontal bar 3; the lower vertical bar 2 is vertical A longitudinal bar 6 of a transverse L-shaped claw body is respectively connected to both sides of the upper cross bar 3. The transverse bar 7 of the transverse L-shaped claw body extends in the same direction as the upper cross bar 3, and the transverse bar 7 is provided with Hole 3 8 of bar 6; The second base 9 vertically connected to the first base 1 is parallel to the upper cross bar 3 and extends away from the upper cross bar 3; the two outer end surfaces of the first base 1 and the second An outer end surface of the base 9 is correspondingly provided with a vertical hole; the intersection of the first base 1 with the second base 9 and the lower vertical rod 2 is provided with an oblique hole, and the oblique hole is downward and away from the The direction of the second base 9 is inclined.

Further, the claw-type steel frame is welded by 40mm×70mm rectangular steel pipe 16, its chamfers are reinforced by welding reinforcement ribs 17, and the bottom is anchored to the concrete of the ballast bed slab by planting bars.

Self-locking bolts include a vertical self-locking bolt 10 adapted to hole one 4, a horizontal self-locking bolt 11 adapted to hole two 5, and two longitudinal self-locking bolts 12 adapted to two holes three 8 ; The tail of the self-locking bolt is in contact with the corresponding sleeper surface, and the place A in Fig. 2 refers to the sleeper.

Specifically, the vertical self-locking bolt 10, the horizontal self-locking bolt 11, and the longitudinal self-locking bolt 12 have the same structure, each self-locking bolt is fixed in the corresponding hole on the claw steel frame through a threaded sleeve, and the self-locking bolt The head is a hexagonal nut 18, and the tail is a spherical hinged steel support 19 in contact with the corresponding sleeper surface.

Further, a rubber backing plate 20 is pasted on the contact surface between the spherical hinged steel support 19 and the sleeper, and the rubber backing plate 20 is closely attached to the surface of the sleeper.

Furthermore, the rubber backing plate 20 has a thickness of 5-10mm and a static stiffness of 180-200kN/mm natural rubber NR, high-density polyethylene HDPE, vinyl acetate copolymer EVA, high-density polyethylene and vinyl acetate copolymer HDPE/ One of EVA and thermoplastic elastomer TPEE.

The anchorage of planting bars includes three vertical planting bars 13 corresponding to the three vertical holes and an oblique planting bar 14 adapted to the oblique holes; The holes correspond to the vertical holes on the board surface and the oblique holes on the board surface. The planting bars pass through the corresponding upper and lower holes and screw the fixing nut 15 in the upper part to anchor the T-shaped base on the concrete of the track bed slab.

Further, the vertical planting bars 13 are perpendicular to the surface of the ballast bed slab, and the oblique planting bars 14 are inclined 45° planting bars.

Further, the vertical planting bars 13 are drilled perpendicular to the surface of the ballast bed slab, and the oblique 45° planting bar is drilled at an angle of 45° with the top surface of the ballast bed slab, the allowable deviation is ±5°, and the drilling (that is, the vertical surface of the slab surface Orientation holes, oblique holes on the surface of the board) have a diameter of 20-32mm, and a drilling depth of 200-250mm. The implanted vertical planting bars are 13, and the oblique 45° planting bars are HRB500 grade threaded steel bars with a diameter of 16-28mm. The penetration depth is not less than 150mm.

The utility model also discloses a three-dimensional reinforcement method for a ballastless track sleeper of a high-speed railway. The above-mentioned three-dimensional reinforcement device for a ballastless track sleeper of a high-speed railway is applied. The reinforcement method includes the following steps:

(1) Pouring self-leveling fast-hardening mortar 21 on the surface of the exposed track bed slab at both ends of the sleeper for leveling;

(2) After the mortar is hardened, drill holes and plant bars at appropriate positions on both sides of the sleeper;

(3), after the planting glue is hardened, install the claw-type steel frame and fix it with double fixing nuts 15;

(4) Then tighten the longitudinal self-locking bolts 12 on both sides and the horizontal self-locking bolts 11 synchronously in sequence, and finally tighten the vertical self-locking bolts 10 so that the tails of the self-locking bolts closely fit the sleeper surface.

Further, the self-leveling fast-hardening mortar 21 is one of polymer cement mortar, magnesium phosphate cement repair mortar, epoxy resin mortar, and acrylic resin mortar, with a compressive strength of ≥5MPa for 30 minutes, a compressive strength of ≥20MPa for 1d, and a compressive strength of ≥20MPa for 7d. Compressive strength ≥ 40MPa.

Further, the tail of the self-locking bolt is closely attached to the sleeper surface through the rubber backing plate 20. The close fitting is to use a torque wrench to turn the nut 18 on the head of the self-locking bolt to adjust the distance between the bolt and the sleeper, and the torque is 100-150N m, and can provide horizontal, vertical and vertical three-dimensional buckle force ≥ 300kN.

Example 1:

Three-dimensional reinforcement device and reinforcement method for emergency rectification of embedded sleepers in high-speed railway ballastless track during operation period

A three-dimensional reinforcement device consisting of a claw-type steel frame welded by 40mm×70mm rectangular steel pipes 16, one vertical self-locking bolt 10, one horizontal self-locking bolt 11, two longitudinal self-locking bolts 12, and planting anchors . The self-locking bolt is fixed on the claw-type steel frame through a threaded sleeve, the top is a hexagonal nut 18, and the bottom is a spherical hinged steel support 19. The contact surface between the steel support and the sleeper is pasted with HDPE rubber with a thickness of 5mm and a static stiffness of 180kN/mm. Backing plate 20.

The concrete reinforcement method is as follows: first chisel away the ballast bed concrete at both ends of the sleeper, then pour 30min compressive strength 8.2MPa polymer quick-hardening mortar on the surface of the exposed track bed slab for leveling, after the mortar hardens, drill holes and plant bars on both sides of the sleeper, vertical The planting bar 13 should be drilled perpendicular to the surface of the ballast bed slab, and the 45° oblique planting bar should be drilled at an angle of 45° to the top surface of the ballast bed slab, the allowable deviation is ±5°, the drilling diameter is 30mm, and the drilling depth is 200mm. Implant HRB500 grade threaded steel bars with a diameter of 25mm, and the embedded depth of the steel bars is 150mm; after the reinforcement glue hardens, install the claw-type steel frame and fix it with double fixing nuts, and then use a torque wrench to tighten the longitudinal self-locking bolts on both sides sequentially. Self-locking bolt 11, and finally tighten the vertical self-locking bolt 10, so that the rubber backing plate 20 at the bottom of the self-locking bolt and the sleeper surface are closely attached to the torque of 100N·m.

After the three-dimensional reinforcement device was installed according to Example 1, the train running parameters and sleeper stability parameters were monitored on-site when the train passed, as shown in Table 1. It can be seen that the safety of the track structure meets the requirements of high-speed trains.

Table 1 Example 1 train operating parameters and sleeper stability parameter monitoring data

monitoring project maximum value limit value Derailment coefficient 0.14 0.8 load shedding rate 0.12 0.8 Axle lateral force/kN 15.2 / Sleeper vertical displacement (end)/mm 0.15 / Lateral displacement of sleeper (end)/mm 0.12 / Longitudinal displacement of sleeper (end)/mm 0.10 / Vertical displacement of sleeper (middle part)/mm 0.08 / Lateral displacement of sleeper (middle part)/mm 0.08 / Longitudinal displacement of sleeper (middle part)/mm 0.04 /

Example 2:

Three-dimensional reinforcement device and reinforcement method for quick replacement of ballastless track sleepers in high-speed railway during operation period

A three-dimensional reinforcement device consisting of a 40mm×70mm rectangular steel pipe 16 welded claw-type steel frame, 1 vertical self-locking bolt 10, 1 horizontal self-locking bolt 11, 2 longitudinal self-locking bolts 12, and planting anchors . The self-locking bolt is fixed on the claw-type steel frame through a threaded sleeve. The top is a hexagonal nut 18, and the bottom is a spherical hinged steel support 19. The contact surface between the steel support and the switch sleeper is pasted with TPEE with a thickness of 10mm and a static stiffness of 200kN/mm. Rubber backing plate 20.

The concrete reinforcement method is as follows: first chisel away the concrete of the track bed around the turnout sleeper, then pour epoxy resin mortar with a compressive strength of 13.5MPa on the surface of the exposed track bed slab for 30 minutes for leveling, and after the mortar hardens, drill holes and plant bars on both sides of the turnout tie, vertically The planting bar 13 should be drilled perpendicular to the surface of the ballast bed slab, and the 45° oblique planting bar should be drilled at an angle of 45° to the top surface of the ballast bed slab, the allowable deviation is ±5°, the drilling diameter is 25mm, and the drilling depth is 250mm. Implant HRB500-grade threaded steel bars with a diameter of 20mm, and the embedded depth of the steel bars is 180mm; after the reinforcement glue hardens, install the claw-type steel frame and fix it with double fixing nuts, and then tighten the longitudinal self-locking bolts 12 on both sides synchronously with a torque wrench Self-locking bolt 11, and finally tighten the vertical self-locking bolt 10, so that the rubber backing plate 20 at the bottom of the self-locking bolt is closely attached to the fork pillow surface and the torque is 150N·m.

After the three-dimensional reinforcing device was installed according to Example 2, the train running parameters and switch sleeper stability parameters were monitored on-site when the train passed, as shown in Table 2. It can be seen that the safety of the track structure meets the requirements of high-speed trains.

Table 2 Example 2 train operating parameters and switch sleeper stability parameter monitoring data

monitoring project maximum value limit value derailment factor 0.25 0.8 load shedding rate 0.18 0.8 Axle lateral force/kN 13.2 / Turnout sleeper vertical displacement (end)/mm 0.25 / Lateral displacement of turnout sleeper (end)/mm 0.17 / Longitudinal displacement of turnout sleeper (end)/mm 0.12 / Vertical displacement of turnout sleeper (middle part)/mm 0.16 / Transverse displacement of turnout sleeper (middle part)/mm 0.05 / Longitudinal displacement of turnout sleeper (middle part)/mm 0.08 /

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for relevant details, please refer to the description of the method part.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A high-speed railway ballastless track sleeper three-dimensional reinforcement device is characterized in that it comprises a claw-type steel frame, self-locking bolts and planting bars for anchorage, and the claw-type steel frame includes a T-shaped base, a vertical L-shaped Claw body and two transverse L-shaped claw bodies, the upper part of the first base of the T-shaped base is vertically connected to the lower vertical bar of the vertical L-shaped claw body, and the upper cross bar of the vertical L-shaped claw body A hole 1 parallel to the lower vertical bar is provided on the top, and a hole 2 parallel to the upper horizontal bar is provided on the lower vertical bar; the two sides of the lower vertical bar perpendicular to the direction of the upper horizontal bar are respectively A longitudinal rod connected to the horizontal L-shaped claw body, the horizontal rod of the horizontal L-shaped claw body extends in the same direction as the upper horizontal rod, and the horizontal rod is provided with a hole 3 parallel to the longitudinal rod ; the second base vertically connected to the first base is parallel to the upper cross bar and extends away from the upper cross bar; the two outer end surfaces of the first base and the second base A vertical hole is correspondingly opened on an outer end surface of the seat; an oblique hole is opened at the intersection of the first base, the second base and the lower vertical bar, and the oblique hole is downward and tilt away from the second base; the self-locking bolts include a vertical self-locking bolt adapted to the first hole, a horizontal self-locking bolt adapted to the second hole, and two Two longitudinal self-locking bolts corresponding to each of the three holes; the tails of the self-locking bolts are in contact with the corresponding sleeper surface; Vertical reinforcement and an oblique reinforcement adapted to the oblique hole; the top surface of the ballast bed slab is provided with a vertical hole on the surface corresponding to the vertical hole and the oblique hole, and a vertical hole on the surface of the surface Oblique holes, planting bars pass through the corresponding upper and lower holes and screw the fixing nuts in the upper part to anchor the T-shaped base on the concrete of the track bed slab. 2. A three-dimensional reinforcement device for ballastless track sleepers of high-speed railways according to claim 1, wherein the claw-type steel frame is welded by rectangular steel pipes, and its chamfers are reinforced by welding reinforced ribs. 3. A three-dimensional reinforcement device for ballastless track sleepers of high-speed railways according to claim 1, wherein the vertical self-locking bolts, the horizontal self-locking bolts, and the longitudinal self-locking bolts have the same structure, Each of the self-locking bolts is fixed in the corresponding hole on the claw-type steel frame through a threaded sleeve. The head of the self-locking bolt is a nut, and the tail is a spherical hinge steel that contacts the corresponding sleeper surface. support. 4. A three-dimensional reinforcement device for ballastless track sleepers of high-speed railways according to claim 3, characterized in that a rubber backing plate is pasted on the contact surface of the spherical hinged steel support and the sleeper, and the rubber backing plate is closely connected to the sleeper surface fit. 5. The three-dimensional reinforcing device for ballastless track sleepers of high-speed railways according to claim 4, wherein the rubber backing plate is 5-10 mm in thickness, 180-200 kN/mm in static stiffness, natural rubber NR, high-density polymer One of ethylene HDPE, vinyl acetate copolymer EVA, thermoplastic elastomer TPEE. 6. A three-dimensional reinforcing device for ballastless track sleepers of high-speed railways according to claim 1, wherein said vertical planting bars are perpendicular to the surface of the track bed, and said oblique planting bars are planted at an angle of 45°. ribs. 7. A kind of high-speed railway ballastless track sleeper three-dimensional reinforcing device according to claim 6, it is characterized in that, described vertical planting bar is perpendicular to the track bed slab surface and is drilled, and described oblique 45 ° planting bar and The top surface of the track bed is drilled at an angle of 45°, the allowable deviation is ±5°, the diameter of the hole is 20-32mm, and the depth of the hole is 200-250mm. It is a HRB500 grade threaded steel bar with a diameter of 16-28mm, and the embedded depth of the steel bar is not less than 150mm.

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