CN115125772A - Railway roadbed filler cutting and replacing construction device and construction method - Google Patents

Abstract

The invention relates to a railway roadbed filler cutting and replacing construction device and a construction method, and belongs to the field of railway roadbed engineering. Cutting roadbed filling in an area needing to be renovated by using a chain saw, and carrying out construction operations such as supporting, falling track deviation rectifying, grouting repairing, line restoring and the like on a track structure in a cutting seam according to design requirements. The invention has the beneficial effects that: the cutting device is convenient to carry, convenient to install and easy to operate, particularly convenient to get on and off the road when construction is carried out on an operating railway skylight point, and in the cutting process, the rotating speed can be controlled by adopting hydraulic stepless speed change according to the hardness of a roadbed to be cut and the height of a required cutting seam, so that the cutting efficiency is improved.

Description

Railway roadbed filler cutting and replacing construction device and construction method

Technical Field

The invention belongs to the field of railway roadbed engineering, and particularly relates to a railway roadbed filler cutting and replacing construction device and a construction method.

Background

With the rapid development of social economy in China, the construction scale and the operation mileage of railway engineering are increased day by day, regions in China are wide, geological conditions between regions are complex and changeable, the problems of subgrade settlement, upwarping, slurry turning, mud pumping and the like are shown day by day, especially the deformation of a foundation bed part usually causes the condition of unsmooth ballastless tracks, great potential safety hazards are brought to railway operation, therefore, roadbed fillers causing the unsmooth tracks need to be replaced rapidly, and the problem of unsmooth tracks is solved fundamentally.

The existing roadbed replacement method is to integrally break a roadbed slab, a supporting layer and a roadbed and then rebuild, and the renovation method has the disadvantages of large engineering, high comprehensive cost and adverse social influence, and vehicles need to be stopped during construction, so that normal operation is seriously influenced.

Chinese patent 201810410371.5 discloses a method for repairing the deformation of high-speed railway roadbed by drilling holes transversely in the roadbed and inserting round pipes. Although the normal operation of the railway is not affected, the following defects exist: the deformation of the upper arch of the roadbed is ensured to be within a controllable range by replacing the large circular pipe with the small circular pipe, even if the deformation of a small section of line is different, the required specifications are more when the diameter of the circular pipe is prepared, and the implementation is difficult.

Chinese patent 201721556116.9, a high-speed railway roadbed warp restores structure, sets up at the top on bed top layer through the connecting steel plate, lays the concrete bottom at the top of connecting steel plate, and the anchor rope passes through the staple and will connecting steel plate downwardly extending location, restores high-speed railway roadbed and upwarp. It has the following disadvantages: the repair structure is characterized in that steel plates for connecting anchor cables are placed under a bed plate and construction of soil nails in a basement is completed when a railway is newly built, the repair structure is prepared in advance, if an upwarp deformation area exists, the repair structure is implemented, the construction difficulty is high, the repair structure only pulls the steel plates through the anchor cables to limit the upwarp of a roadbed, and the passive control is realized.

Chinese patent 201410042388.1, the reinforced structure is restoreed in arching on the high-speed railway road bed, and the release hole is bored from cutting both sides side ditch position road bed bottom to this structure, utilizes the bulging force of release inflation ground to be favorable to the anchor to pull the time ballastless track supporting layer to warp downwards, does benefit to the tension force of anchor rope, pushes down ballastless track supporting layer, nevertheless it has following defect: the track supporting layer is pressed downwards through the tensile force of the anchor cable to restore the target position of the upper arch road base elevation, the tensile force of the anchor cable is not easy to control, the target elevation cannot be reduced, and the target elevation can be lower than the target elevation if the tensile force of the anchor cable is larger.

Disclosure of Invention

The invention aims to overcome the defects and provides a construction device and a construction method for cutting and replacing the railway roadbed filling, which are convenient for accurately and quickly cutting the roadbed and solving the problems related to roadbed deformation, can be implemented in skylight points of an operating railway and do not need to interrupt the running.

The purpose of the invention is realized by the following technical scheme: the utility model provides a railway roadbed filler cutting replacement construction equipment which characterized in that: the chain saw comprises two chain saw brackets and a chain saw arranged between the two chain saw brackets, wherein a chain saw power device and a traction power device are arranged at the bottom of each chain saw bracket, a transmission device is arranged on an output shaft of each chain saw power device, and each traction power device is connected with a traction rope; the chain saw bracket consists of a chain saw support and a chain saw frame, the bottom of the chain saw support is provided with a support wheel, the inner side surface of the chain saw support is provided with a roller, and the chain saw is connected with a transmission device.

The chain saw consists of a chain plate and a cutting tooth chain, wherein two ends of the chain plate are provided with supporting heads which are respectively fixed on chain saw power devices on two sides, two side surfaces of the chain plate are provided with grooves, the cutting tooth chain is annular and surrounds the periphery of the chain plate and is arranged in the grooves on two sides of the chain plate, and two ends of the cutting tooth chain are sleeved on the transmission device.

The cutting tooth chain is formed by connecting a plurality of sections of cutting tooth units.

The cutting pick unit is formed by connecting a plurality of cutting picks with different sizes in sequence from small to large.

The cutting tooth chain is formed by sequentially connecting a plurality of sections of cutting tooth units according to the same cutting tooth direction.

A construction method of a railway roadbed filling cutting and replacing construction device is characterized by comprising the following steps: the method comprises the following steps:

step 1: in the roadbed replacement region range, respectively excavating walking grooves with certain depth and width between the road shoulders and lines close to one side of the supporting layer, excavating mounting grooves with certain depth and width at the roadbed and two sides of the supporting layer below the supporting layer at one end of the region to be replaced, and mounting vertical supports in the mounting grooves below the supporting layer for supporting the track structure;

step 2: placing a chain saw bracket at the mounting groove, placing the chain saw bracket of the chain saw bracket on supporting layers at two sides, symmetrically fixing ground anchors in a road shoulder and line walking groove at a certain distance along the longitudinal direction of a line within the replacement region, and connecting a traction rope with the ground anchors;

and step 3: starting a chain saw power device to drive a cutting tooth chain to rotate, starting a traction power device, pulling a chain saw to enter a ruler through a traction rope, cutting a cutting seam with a certain width on a roadbed, and placing a vertical support in the cutting seam;

and 4, step 4: symmetrically fixing a track structure limiting device at a certain distance in the longitudinal road shoulders and the inter-line walking grooves of the line within the range of the replacement area;

and 5: after the roadbed is cut to form a through cutting gap in the range of the replacement area, adjusting the elevation and the plane of the track structure to a target position by using a jacking device and a track structure limiting device;

step 6: after the height and plane positions of the track structure are adjusted, filling and repairing the cutting seams below the supporting layer;

and 7: and restoring and sealing the walking groove and the mounting groove excavated in the preamble.

The adjustment of the elevation and the plane of the track structure to the target position comprises the following steps:

step 1, measuring and determining a target elevation and a plane position;

step 2, installing jacking devices at intervals at certain intervals under the corresponding steel rail in a cutting seam at the bottom of the supporting layer along the same cross section, removing the original vertical support and track structure limiting devices, performing track structure elevation adjustment operation, measuring the geometric state of the track structure in real time in the adjustment process, and ensuring the adjustment precision;

step 3, after elevation adjustment is finished, vertical supports are installed in the cutting seams;

and 4, transversely pushing the track structure to a target plane position by taking the track structure limiting device as a counter force basis, and then recovering transverse limiting.

The restoring the seal comprises the following steps:

step 1, backfilling the tamping walking groove and mounting grooves on two sides of the walking groove by adopting broken stones;

step 2, forming a closed layer by adopting concrete closed backfill compaction walking grooves;

step 3, filling and repairing the cut seams by adopting high polymer mortar;

step 4, filling the mounting groove below the supporting layer with polymer concrete;

and 5, caulking and sealing the displacement area track plate, the supporting layer and the walking groove sealing layer by adopting a polyurethane caulking material.

The invention has the beneficial effects that:

1. construction cutting device simple structure, the transport is convenient, and the equipment is convenient.

2. The height of the cutting seam can be determined according to the replacement thickness of the roadbed filler, so that the engineering quantity can be controlled conveniently, the original roadbed can be protected to the maximum extent, the construction materials are saved, and the energy conservation, emission reduction, low carbon and environmental protection are facilitated.

3. The construction method has small damage to original equipment and facilities of the railway, and can solve the problems related to deformation of the railway subgrade under the condition of operating the skylight of the railway.

Drawings

FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a side view of fig. 1.

Figure 4 is an elevation view of a cut subgrade.

Fig. 5 is a top view of a cut subgrade.

Fig. 6 is a side view of a cut subgrade.

FIG. 7 is a view of the placement of a chainsaw bracket in the cutting apparatus.

FIG. 8 is a plan view of the remedial work.

FIG. 9 is a sectional view of the remedial work.

FIG. 10 is a partial configuration diagram of the reaction force device.

Wherein:

1-chain saw bracket, 2-chain saw power device, 3-traction power device, 4-chain saw, 5-chain plate, 6-cutting tooth chain, 7-transmission device, 8-bracket wheel, 9-roller, 10-bracket head, 11-traction rope, 12-ground anchor, 13-steel rail, 14-ballast plate, 15-bearing layer, 16-cutting seam, 17-walking groove, 17-1-shoulder walking groove, 17-2-inter-line walking groove, 18-roadbed, 19-mounting groove, 20-track structure limiting device, 21-cushion block, 22-steel support, 23-high polymer mortar, 24-track plate, 25-adjustable bolt, 26-anchor rod and 27-anchor rod anchoring length.

Detailed Description

Example 1: as shown in fig. 1 to 3, in a railway roadbed filling cutting and replacement construction device, 2 chain saw brackets 1 which are oppositely arranged are positioned at two sides of a bed plate 14, each chain saw bracket 1 consists of a chain saw support and a chain saw frame, the chain saw supports are respectively placed on supporting layers 15 at two sides of the bed plate 14, a plurality of support wheels 8 are mounted at the bottom of each chain saw support, the support wheels 8 move on the supporting layers 15, and a plurality of rollers 9 are mounted on the inner side surface of each chain saw support, which is close to one side of the bed plate 14, so that the chain saw brackets 1 can move conveniently; the bottom of the chain saw bracket is provided with a chain saw power device 2 and a traction power device 3, the chain saw power device 2 is provided by a hydraulic motor, the hydraulic motor is connected with a hydraulic pump station through a high-pressure oil pipe and provides driving power for a chain saw, a transmission device 7 selects a five-star wheel, the output shaft of the hydraulic motor is provided with the five-star wheel, and the traction power device 3 is connected with a traction rope 11; a chain saw 4 is arranged between the two chain saw brackets 1, the chain saw 4 consists of a chain plate 5 and a cutting tooth chain 6, grooves are formed in two side faces of the chain plate 5, the cutting tooth chain surrounds the periphery of the chain plate 5 and is arranged in the grooves in the two side faces of the chain plate 5, the grooves play a role in guiding the operation of the cutting tooth chain 6 of the chain saw in the process of cutting a roadbed, two ends of the cutting tooth chain 6 are sleeved on the five-star wheel 7, and the five-star wheel and the chain saw are driven to rotate through the rotation of the hydraulic motor; according to the length of the required chain saw 4, the cutting pick chain 6 is formed by connecting a plurality of cutting pick units, each cutting pick unit is formed by connecting a plurality of cutting picks with different sizes in sequence from small to large, and the plurality of cutting pick units are sequentially connected into a ring shape in the same cutting pick direction; the two ends of the chain plate 5 are provided with the support heads 10, the support heads 10 are respectively fixed on the hydraulic motors on the two sides, and the length of the chain plate 5 is adjusted by adjusting the screw threads on the support heads 10, so that the cutting tooth chain 6 arranged on the chain plate 5 is tensioned and compacted.

Example 2: as shown in fig. 4 to 10, a construction method of a railway roadbed filling cutting and replacing construction device, taking a single file of an upper arch roadbed section 10m as an example, includes the following steps:

step 1: in the range of 10m of a roadbed replacement region, a roadbed shoulder walking groove 17-1 and a line walking groove 17-2 with certain depth and width are respectively dug in roadsides and lines close to one side of a supporting layer 15, mounting grooves 19 with certain depth and width are dug in the two sides of the supporting layer 15 at one end of the region to be replaced and a roadbed surface layer 18 below the supporting layer 15, the mounting grooves are used for mounting a cutting replacement construction device, and steel supports 22 are mounted in the mounting grooves 19 below the supporting layer 15 to carry out vertical support on a track structure;

step 2: respectively carrying the cutting replacement construction device to an on-line assembly, connecting a hydraulic motor and a traction power device 3 with a hydraulic pump station through high-pressure oil pipes, symmetrically fixing ground anchors 12 at certain distances in a road shoulder and an inter-line walking groove 17 in a replacement region along the longitudinal direction of a line, connecting a traction rope 11 with the ground anchors 12, and placing a chain saw support of a chain saw bracket 1 on supporting layers 15 at two sides at a mounting groove 19;

and step 3: starting a hydraulic motor, driving a chain saw cutting tooth chain 6 to rotate through a five-star wheel, starting a traction power device 3 after the chain saw cutting tooth chain 6 runs stably, pulling a chain saw 4 to enter a ruler through a traction rope 11 under the action of the traction power device 3 and the counter force provided by a ground anchor 12, cutting a cutting seam 16 with a certain width on the surface layer of a roadbed 18, and placing a plurality of cushion blocks 21 in the cutting seam 16 at intervals for vertical support;

and 4, step 4: the steel structure track structure limiting devices 20 are symmetrically arranged in the longitudinal road shoulders along the line and in the line-to-line walking grooves 17 at certain intervals in the replacement area range, the steel structure track structure limiting devices 20 are embedded with anchor rods 26 in the walking grooves 17 to certain anchoring depth 27, and are connected with the track bed board 14 through adjustable bolts 25 and used for correcting the track structure and limiting the track structure transversely;

and 5: after cutting the roadbed 18 in the replacement area range to form a through cutting gap, firstly measuring the track elevation and the plane position before adjusting the track structure elevation and the plane, and determining the target geometric state; along the same cross section, in a cutting joint at the bottom of a supporting layer 15, installing ultrathin jacks at intervals at certain intervals under a steel rail, removing an original vertical steel support 22, a cushion block 21 and a transverse track structure limiting device 20, performing track structure elevation adjustment operation, measuring the geometric state of a track structure in real time in the adjustment process, ensuring the adjustment precision, and installing a limiting cushion block 21 in the cutting joint 16 for vertical support until reaching an elevation target position; after the elevation adjustment is finished, the transverse limiting constraint of the track structure limiting device 20 is released, and the track structure is transversely pushed to the target plane position by taking the track structure limiting device 20 as a counter force basis, and then the transverse limiting is recovered;

step 6: after the adjustment of the elevation and the plane position is finished, filling and repairing the cut seam 16 by adopting high polymer mortar 23 below the supporting layer 15;

and 7: then, the walking groove 17 and the mounting grooves 19 at the two sides of the walking groove are tamped by adopting broken stones; the concrete is adopted to seal, backfill and tamp the traveling groove 17 to form a sealing layer; filling and repairing the cut seam 16 by using high polymer mortar; filling the mounting groove 19 below the supporting layer 15 with polymer concrete; and (3) adopting a polyurethane caulking material to perform caulking sealing on the replacement area track plate 24, the supporting layer 15 and the traveling groove 17 sealing layer, finishing the arch-up treatment of the railway of the section and restoring the line.

Claims (8)

1. The utility model provides a railway roadbed filler cutting replacement construction equipment which characterized in that: the chain saw comprises two chain saw brackets and a chain saw arranged between the two chain saw brackets, wherein a chain saw power device and a traction power device are arranged at the bottom of each chain saw bracket, a transmission device is arranged on an output shaft of the chain saw power device, and the traction power device is connected with a traction rope; the chain saw bracket consists of a chain saw support and a chain saw frame, the bottom of the chain saw support is provided with a bracket wheel, the inner side surface of the chain saw support is provided with a roller, and the chain saw is connected with a transmission device.

2. The railroad bed filler cutting and replacing construction device according to claim 1, wherein: the chain saw consists of a chain plate and a cutting tooth chain, wherein two ends of the chain plate are provided with supporting heads which are respectively fixed on chain saw power devices on two sides, two side surfaces of the chain plate are provided with grooves, the cutting tooth chain is annular, surrounds the periphery of the chain plate and is arranged in the grooves on two sides of the chain plate, and two ends of the cutting tooth chain are sleeved on the transmission device.

3. The railroad bed filler cutting and replacing construction device according to claim 2, wherein: the cutting tooth chain is formed by connecting a plurality of sections of cutting tooth units.

4. The railroad bed filler cutting and replacing construction device according to claim 3, wherein: the cutting pick unit is formed by connecting a plurality of cutting picks with different sizes in sequence from small to large.

5. The railroad bed filler cutting and replacing construction device according to claim 4, wherein: the cutting tooth chain is formed by sequentially connecting a plurality of sections of cutting tooth units in the same cutting tooth direction.

6. A construction method of the cutting and replacing construction device for the filler of the railroad bed according to any one of claims 1 to 5, wherein: the method comprises the following steps:

step 1: in the roadbed replacement region range, respectively excavating walking grooves with certain depth and width between the road shoulders and lines close to one side of the supporting layer, excavating mounting grooves with certain depth and width at the roadbed and two sides of the supporting layer below the supporting layer at one end of the region to be replaced, and mounting vertical supports in the mounting grooves below the supporting layer for supporting the track structure;

and 2, step: placing a chain saw bracket at the mounting groove, placing the chain saw bracket of the chain saw bracket on supporting layers at two sides, symmetrically fixing ground anchors in road shoulders and line-to-line walking grooves at certain distance along the longitudinal direction of the line within the range of the replacement region, and connecting a traction rope with the ground anchors;

and step 3: starting a chain saw power device to drive a cutting tooth chain to rotate, starting a traction power device, pulling a chain saw to enter a ruler through a traction rope, cutting a cutting seam with a certain width on a roadbed, and placing a vertical support in the cutting seam;

and 4, step 4: symmetrically fixing a track structure limiting device at a certain distance in the longitudinal road shoulders and the inter-line walking grooves of the line within the range of the replacement area;

and 5: after the roadbed is cut to form a through cutting gap in the range of the replacement area, adjusting the elevation and the plane of the track structure to a target position by using a jacking device and a track structure limiting device;

step 6: after the height and plane positions of the track structure are adjusted, filling and repairing the cutting seams below the supporting layer;

and 7: and restoring and sealing the walking groove and the mounting groove excavated in the preamble.

7. The construction method of the cutting and replacing construction device for the fillers of the railroad bed according to claim 6, wherein: adjusting the elevation and the plane of the track structure to the target position comprises the following steps:

step 1, measuring and determining a target elevation and a plane position;

step 2, installing jacking devices at intervals at certain intervals under the corresponding steel rail in the cutting joint at the bottom of the supporting layer along the same cross section, removing the original vertical supports and the track structure limiting devices, performing track structure elevation adjustment operation, measuring the geometric state of the track structure in real time in the adjustment process, and ensuring the adjustment precision;

step 3, after elevation adjustment is completed, installing a vertical support in the cutting seam;

and 4, transversely pushing the track structure to a target plane position by taking the track structure limiting device as a counter force basis, and then recovering transverse limiting.

8. The construction method of the cutting and replacing construction device for the fillers of the railroad bed according to claim 6, wherein: the restoring the seal comprises the following steps:

step 1, backfilling the tamping walking groove and mounting grooves on two sides of the walking groove by adopting broken stones;

step 2, forming a closed layer by adopting concrete closed backfill compaction walking grooves;

step 3, filling and repairing the cut seams by adopting high polymer mortar;

step 4, filling the mounting groove below the supporting layer with polymer concrete;

and 5, caulking and sealing the displacement area track plate, the supporting layer and the walking groove sealing layer by adopting a polyurethane caulking material.

Images