阅读说明：本技术 Crtsii型板式无砟轨道宽窄接缝修复方法及凿除装置 (Repairing method and chiseling device for wide and narrow joints of CRTSII type slab ballastless track ) 是由 徐凌雁 谢剑 于 2020-12-23 设计创作，主要内容包括：本发明提供了一种CRTSII型板式无砟轨道宽窄接缝修复方法包括如下步骤：步骤S1、进行植筋锚固施工：对损伤的宽窄接缝处两侧轨道板进行植筋锚固施工；步骤S2、进行损伤的宽窄接缝处混凝土凿除：在轨道板与宽接缝的交汇处切割工艺缝以及凿除损伤的宽窄接缝处混凝土；步骤S3、检查张拉力矩及连接钢筋；步骤S4、浇筑宽窄接缝处混凝土：在宽窄接缝中浇筑混凝土。本发明能够在修复宽窄接缝损伤施工中修复效率高,使能在规定的天窗时间内完成宽窄接缝损伤修复。(The invention provides a repairing method for a wide and narrow joint of a CRTSII type slab ballastless track, which comprises the following steps: step S1, carrying out the steel bar planting anchoring construction: carrying out bar planting anchoring construction on the track slabs on two sides of the damaged wide and narrow joint; step S2, chiseling concrete at the damaged wide and narrow joint: cutting a process seam at the intersection of the track slab and the wide seam and chiseling damaged concrete at the wide and narrow seam; step S3, checking the tension moment and connecting the steel bars; step S4, pouring concrete at the wide and narrow joints: and pouring concrete in the wide and narrow joints. The method has high repairing efficiency in the construction of repairing the wide and narrow seam damage, and can finish the repair of the wide and narrow seam damage within the specified skylight time.)

The repairing method of the wide and narrow joint of the CRTSII slab ballastless track is characterized by comprising the following steps:

step S1, carrying out the steel bar planting anchoring construction: carrying out bar planting anchoring construction on the track slabs on two sides of the damaged wide and narrow joint;

step S2, chiseling concrete at the damaged wide and narrow joint: cutting a process seam at the intersection of the track slab and the wide seam of the wide and narrow seams and chiseling out concrete at the damaged wide and narrow seams;

step S3, checking the tension moment and connecting the steel bars: checking the state of the tensioning locking piece, if the tensioning locking piece is in a poor state, replacing and tensioning and locking again, and longitudinally connecting the track plate again; checking the connecting steel bars, and if the connecting steel bars are poor, renovating the connecting steel bars;

step S4, pouring concrete at the wide and narrow joints: and pouring concrete in the wide and narrow joints.

2. The repairing method for the wide and narrow joint of the CRTSII type slab ballastless track according to claim 1, wherein the step S1 specifically comprises: when the temperature difference between the core temperature of the track slab and the original longitudinal temperature does not exceed 5 ℃, 2 bars are planted on the track slabs on two sides of the damaged wide and narrow joint at the first group of track bearing platforms close to the damaged wide and narrow joint; when the temperature difference between the core temperature of the track slab and the original longitudinal temperature is changed to 6-15 ℃, respectively planting 8 ribs on the track slabs on two sides of the damaged wide and narrow joint; the rail bearing platform which is well planted with the steel bars does not need to be repeatedly planted with the steel bars; when finding out the failure of the steel bar planting, the steel bar planting is supplemented on the adjacent rail bearing platforms in the same rail plate.

3. The repairing method for the wide and narrow joint of the CRTSII type slab ballastless track according to claim 1, wherein the step S2 specifically comprises the following steps:

step S21, cutting a process seam at the intersection of the track slab and the wide seam: cutting a 5mm wide process seam along the direction of the track plate by taking the intersection of the track plate and the wide seam as a reference;

step S22, inserting a protective steel plate: inserting a protective steel plate into the 5mm wide process slit in the step S21;

step S23, cutting concrete at the wide and narrow joints: cutting concrete between the two protective steel plates;

step S24, removing concrete slag: and removing concrete slag in the wide and narrow joints.

4. The CRTSII slab ballastless track wide-narrow joint repair method of claim 3, wherein the step S2 further comprises:

step S25, monitoring concrete chiseling secondary diseases: and monitoring the secondary disease condition including the relative displacement between the track slab and the mortar layer at any time, and repairing in time.

5. The repairing method for the wide and narrow joint of the CRTSII type slab ballastless track according to claim 1, wherein the step S4 specifically comprises the following steps:

step S41, removing dirt of the wide and narrow joints;

step S42, installing a pouring template, and tensioning by using a screw;

and step S43, pouring concrete in the wide and narrow joints.

6. A chiseling device for applying the CRTSII type slab ballastless track wide-narrow joint repairing method according to any one of claims 1 to 5, which comprises a traveling vehicle (1), and a high-pressure water removing device (2), a pouring hopper (3) and a vacuum dust collector (4) which are arranged on the traveling vehicle (1), wherein the high-pressure water removing device (2) is used for cutting the process joint at the intersection of the track slab and the wide joint and chiseling the concrete at the damaged wide-narrow joint, the pouring hopper (3) is used for pouring the wide-narrow joint, the vacuum dust collector (4) is used for removing the dirt in the area of the wide-narrow joint, the traveling vehicle (1) comprises a guide rail (11) and a traveling roller, the guide rail (11) is arranged relatively above the traveling vehicle (1), the high-pressure water removing device (2) comprises a spray head (21), and the spray head (21) can move along the guide rail (11), the walking rollers are arranged below the walking vehicle (1) relatively and are arranged corresponding to the steel rails (5) of the ballastless track, and the walking rollers walk along the steel rails (5).

7. Chiseling device according to claim 6, characterized in that the spraying head (21) is provided with a width adjustment device and the high-pressure water breaking device (2) is provided with a water pressure adjustment device.

8. The chiseling device as claimed in claim 1, further comprising a protective steel plate insertion means provided on the walking vehicle (1) for inserting a protective steel plate in a process seam at the intersection of a track slab and a wide seam.

9. The chiseling device according to claim 1, further comprising a chiseling monitoring device and a tensioning lock detecting device, wherein the chiseling monitoring device is arranged on the walking vehicle (1), the chiseling monitoring device is used for monitoring secondary disease conditions including relative displacement between a track plate and a mortar layer, the tensioning lock detecting device is arranged on the walking vehicle (1), and the chiseling monitoring device is used for detecting the tensioning lock state.

Technical Field

The invention relates to the technical field of maintenance and construction of CRTSII type slab ballastless tracks, in particular to a method for repairing wide and narrow joints of CRTSII type slab ballastless tracks and a chiseling device.

Background

And 6 finish-rolled twisted steel bars are respectively arranged at two end parts of the CRTSII type ballastless track slab, and concrete is poured into the wide and narrow joints after longitudinal connection through the tensioning locking piece to form a continuous track structure which is through and has unlimited length. Along with large-scale opening operation of high-speed railways in China, serious damage phenomena such as gap separation, pulling, rib exposure, bulge, block falling and the like occur to concrete at wide joint positions between boards under the influence of train load or weather on part of road sections. Along with the extension of operation time, cause the track board and mortar interlaminar crack separation, make track board and mortar layer break away from, along with the decline of mortar layer adhesion and the expansion of crack separation, will cause the track board to arch upward, seriously influenced train operation safety. In order to prevent further deterioration and ensure driving safety, repair work needs to be carried out on the wide and narrow seam damage part.

In the construction of repairing the damage of the wide and narrow joints, the concrete at the wide and narrow joints is chiseled by adopting the traditional machine, the reinforcing steel bar structure is easy to damage, the efficiency is low, and the dust is more. The high-speed railway construction needs to strictly execute a skylight repairing system and needs to be carried out within the skylight time, and similarly, ballastless track repairing operation construction is no exception. The research on how to carry out efficient repair construction operation on the wide and narrow seam damage within the effective skylight time length has certain practical significance.

Disclosure of Invention

The invention provides a repairing method and a chiseling device for wide and narrow joints of a CRTSII type slab ballastless track, and aims to solve the technical problems of low repairing efficiency and much dust of the wide and narrow joints of the ballastless track in the background technology.

In order to achieve the purpose, the method for repairing the wide and narrow joint of the CRTSII type slab ballastless track provided by the invention comprises the following steps:

step S1, carrying out the steel bar planting anchoring construction: carrying out bar planting anchoring construction on the track slabs on two sides of the damaged wide and narrow joint;

step S2, chiseling concrete at the damaged wide and narrow joint: cutting a process seam at the intersection of the track slab and the wide seam of the wide and narrow seams and chiseling out concrete at the damaged wide and narrow seams;

step S3, checking the tension moment and connecting the steel bars: checking the state of the tensioning locking piece, if the tensioning locking piece is in a poor state, replacing and tensioning and locking again, and longitudinally connecting the track plate again; checking the connecting steel bars, and if the connecting steel bars are poor, renovating the connecting steel bars;

step S4, pouring concrete at the wide and narrow joints: and pouring concrete in the wide and narrow joints.

Preferably, in step S1, specifically, the method includes: when the temperature difference between the core temperature of the track slab and the original longitudinal temperature does not exceed 5 ℃, 2 bars are planted on the track slabs on two sides of the damaged wide and narrow joint at the first group of track bearing platforms close to the damaged wide and narrow joint; when the temperature difference between the core temperature of the track slab and the original longitudinal temperature is changed to 6-15 ℃, respectively planting 8 ribs on the track slabs on two sides of the damaged wide and narrow joint; the rail bearing platform which is well planted with the steel bars does not need to be repeatedly planted with the steel bars; when finding out the failure of the steel bar planting, the steel bar planting is supplemented on the adjacent rail bearing platforms in the same rail plate.

Preferably, step S2 specifically includes the following steps:

step S21, cutting a process seam at the intersection of the track slab and the wide seam: cutting a 5mm wide process seam along the direction of the track plate by taking the intersection of the track plate and the wide seam as a reference;

step S22, inserting a protective steel plate: inserting a protective steel plate into the 5mm wide process slit in the step S21;

step S23, cutting concrete at the wide and narrow joints: cutting concrete between the two protective steel plates and at the narrow gap;

step S24, removing concrete slag: and removing concrete slag in the wide and narrow joints.

Preferably, the step S2 further includes:

step S25, monitoring concrete chiseling secondary diseases: and monitoring the secondary disease condition including the relative displacement between the track slab and the mortar layer at any time, and repairing in time.

Preferably, the step S4 specifically includes the following steps:

step S41, removing dirt of the wide and narrow joints;

step S42, installing a pouring template, and tensioning by using a screw;

and step S43, pouring concrete in the wide and narrow joints.

The invention provides a chiseling device applying the CRTSII type slab ballastless track wide-narrow seam repairing method, which comprises a traveling vehicle, a high-pressure water breaking device, a pouring hopper and a vacuum dust collector, wherein the high-pressure water breaking device, the pouring hopper and the vacuum dust collector are arranged on the traveling vehicle, the high-pressure water breaking device is used for cutting a process seam at the intersection of a track plate and a wide-narrow seam and chiseling damaged concrete at the wide-narrow seam, the pouring hopper is used for pouring the wide-narrow seam, the vacuum dust collector is used for removing dirt in the wide-narrow seam area, the traveling vehicle comprises a guide rail and a traveling roller, the guide rail is arranged relatively above the traveling vehicle, the high-pressure water breaking device comprises a spray head, the spray head can move along the guide rail, the traveling roller is arranged relatively below the traveling vehicle and corresponds to a steel rail of a ballastless track, and the traveling roller travels along the steel rail.

Preferably, a width adjusting device is arranged on the spray head, and a water pressure adjusting device is arranged on the high-pressure water breaking device.

Preferably, the protection steel plate inserting device is arranged on the walking vehicle and used for inserting the protection steel plate in a process seam at the intersection of the track plate and the wide and narrow seam.

Preferably, still remove monitoring devices and stretch-draw latch fitting detection device including the chisel, the chisel removes monitoring devices and locates on the walking car, the chisel is removed monitoring devices and is used for the secondary disease condition that the monitoring includes track board and mortar layer relative displacement, stretch-draw latch fitting detection device locates on the walking car, the chisel is removed monitoring devices and is used for detecting stretch-draw latch fitting state.

The method has the advantages of high repairing efficiency in the construction of repairing the wide and narrow joint damage, capability of completing the repair of the wide and narrow joint damage within the specified skylight time, less dust in the repairing process, reduction of physical damage to construction workers and reduction of environmental pollution.

Drawings

Fig. 1 is a flowchart of a method for repairing a wide and narrow joint of a CRTSII slab ballastless track according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural diagram of a chiseling device according to a preferred embodiment of the method for repairing a wide and narrow joint of a CRTSII slab ballastless track according to the present invention;

fig. 3 is a cross-sectional view of the wide and narrow joint and the ballastless track of the CRTSII slab ballastless track repairing method and the chiseling device of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Aiming at the existing problems, the invention provides a repairing method for the wide and narrow joint of a CRTSII type slab ballastless track, which is shown in figure 1 and comprises the following steps:

step S1, carrying out the steel bar planting anchoring construction: carrying out bar planting anchoring construction on the track slabs on two sides of the damaged wide and narrow joint;

step S2, chiseling concrete at the damaged wide and narrow joint: cutting a process seam at the intersection of the track slab and the wide seam of the wide and narrow seams and chiseling out concrete at the damaged wide and narrow seams;

step S3, checking the tension moment and connecting the steel bars: checking the state of the tensioning locking piece, if the tensioning locking piece is in a poor state, replacing and tensioning and locking again, and longitudinally connecting the track plate again; checking the connecting steel bars, and if the connecting steel bars are poor, renovating the connecting steel bars;

step S4, pouring concrete at the wide and narrow joints: and pouring concrete in the wide and narrow joints.

Specific positions of the narrow joint A, the tensioning locking piece B, the steel bar planting anchoring reference position C, the finish rolled steel bar D, the process joint E and the wide joint F can be seen in a structure shown in figure 3.

The step S1 specifically includes: when the temperature difference between the core temperature of the track slab and the original longitudinal temperature (the original longitudinal temperature specifically refers to the environmental temperature during the construction of the adjusting tensioning locking piece during the initial construction) does not exceed 5 ℃, 2 bars are planted on the track slabs on two sides of the damaged wide and narrow joint at the first group of track bearing platforms close to the damaged wide and narrow joint; when the temperature difference between the core temperature of the track slab and the original longitudinal temperature is changed to 6-15 ℃, respectively planting 8 ribs on the track slabs on two sides of the damaged wide and narrow joint; the rail bearing platform which is well planted with the steel bars does not need to be repeatedly planted with the steel bars; when finding that the bar planting is invalid, the bar planting is supplemented on the adjacent rail bearing platforms in the same rail plate, and the effective bar planting quantity of the rail plate is ensured to meet the design requirement.

In order to meet the requirement of the traveling crane in the day, the steel bar planting anchoring construction and the subsequent construction are allowed to be carried out in different skylight time.

Step S2 specifically includes the following steps:

step S21, cutting a process seam at the intersection of the track slab and the wide seam: cutting a 5mm wide process seam along the direction of the track plate by taking the intersection of the track plate and the wide seam as a reference;

step S22, inserting a protective steel plate: inserting a protective steel plate into the 5mm wide process slit in the step S21;

step S23, cutting concrete at the wide and narrow joints: cutting concrete between the two protective steel plates and at the narrow gap;

step S24, removing concrete slag: and removing concrete slag in the wide and narrow joints.

Step S25, monitoring concrete chiseling secondary diseases: and monitoring the secondary disease condition including the relative displacement between the track slab and the mortar layer at any time, and repairing in time.

The step S3 specifically includes: checking the state of a tensioning locking piece, if the state is good, adjusting is not needed, if the fastener is rusty or has poor state, replacing and tensioning and locking again, longitudinally connecting the track slab again according to the symmetrical tensioning principle, and performing tensioning construction on the tensioning locking piece through a torque wrench with the torque standard of 450 N.m; and (5) checking whether the connecting steel bars are corroded seriously, and repairing the reinforcement cage.

The step S4 specifically includes the following steps:

step S41, removing dirt of the wide and narrow joints;

step S42, installing a pouring template, and tensioning by using a screw;

and step S43, pouring concrete in the wide and narrow joints.

As shown in fig. 2, the chiseling device applying the method for repairing a wide and narrow joint of a CRTSII slab ballastless track provided by the invention comprises a traveling vehicle 1, and a high-pressure water breaking device 2, a pouring hopper 3 and a vacuum dust collector 4 which are arranged on the traveling vehicle 1. The high-pressure water breaking device 2 is used for cutting a process seam at the intersection of the track slab and the wide and narrow joints and chiseling damaged concrete at the wide and narrow joints, the pouring hopper 3 is used for pouring the wide and narrow joints, and the vacuum dust collector 4 is used for removing dirt in the wide and narrow joint area.

The walking vehicle 1 comprises a guide rail 11 and walking rollers. The guide rail 11 is arranged above the walking vehicle 1. The spray head 21 is provided with a width adjusting device, the spray head 21 can move along the guide rail 11, the walking roller is arranged below the walking vehicle 1 relatively and corresponds to the steel rail 5 of the ballastless track, and the walking roller walks along the steel rail 5.

The concrete chiseling device for implementing the step S2 is characterized in that: after the traveling vehicle 1 is arranged, the joint of the track slab and the wide and narrow seam is taken as a reference, the high-pressure water breaking device 2 cuts a seam with the width of 5mm along the guide rail 11 in a traveling mode, the cutting depth is controlled not to exceed 100mm, and the track slab cannot be cut; inserting a protective steel plate into the gap with the width of 5 mm; manually operating the high-pressure water breaking device 2 to cut the concrete between the two protective steel plates and at the narrow gap; and removing concrete slag.

The step S4 of implementing the chiseling device and pouring concrete at the wide and narrow joints specifically includes: the vacuum dust collector 4 is used for thoroughly removing dirt in the joint area; installing a template, and tensioning by using a screw; and pouring polymer concrete into the wide and narrow seams of the track slab by using the pouring hopper 3.

In another preferred embodiment of the invention, in which the chiseling device of the method for repairing a wide and narrow joint of a CRTSII slab ballastless track is applied, the nozzle 21 includes a width adjusting device, and the width adjusting device is used for adjusting the width of the water outlet of the nozzle 21. The high-pressure water breaking device 2 is provided with a water pressure adjusting device, and the water pressure adjusting device is used for adjusting the water outlet pressure of the high-pressure water breaking device 2.

The chiseling device further comprises a protective steel plate inserting device, a chiseling monitoring device and a tensioning lock piece detecting device. The protection steel plate inserting device is arranged on the walking vehicle 1 and used for inserting the protection steel plate in a process seam at the intersection of the track plate and the wide and narrow seam. The chiseling monitoring device is arranged on the walking vehicle 1 and is used for monitoring the secondary disease condition including the relative displacement between the track slab and the mortar layer; stretch-draw latch fitting detection device locates on the walking car 1, chiseling monitoring devices is used for detecting stretch-draw latch fitting state.

The invention provides a device for chiseling wide and narrow joints of a CRTSII type slab ballastless track and a repairing method, wherein when repairing, firstly, the track slabs on two sides of the damaged wide and narrow joints are subjected to bar planting anchoring construction, and after the bar planting anchoring reaches the strength; chiseling damaged concrete at the wide and narrow joints by adopting a high-pressure water breaking technology; checking the tension moment and connecting steel bars; and finally pouring concrete at the wide and narrow joints. The method has the advantages that the repairing efficiency is high in the construction of repairing the wide and narrow joint damage, the repair of the wide and narrow joint damage can be completed within the specified skylight time, the dust is less in the repairing process, the physical damage to construction workers is reduced, and the environmental pollution is reduced.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.