Steel bar planting device for roadbed slab gap control
By designing a reinforcement device for the railway road bed plate and the backfill backfill layer, the problems of separation, seepage and empty hanging between the road bed plate and the backfill layer are solved, and better bonding effect and railway safe operation are achieved.
Patent Information
- Application Number
- CN202422405974.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-07
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-10-07
AI Technical Summary
There are problems of separation, seepage and air crane between the rail bed plate and the backfilling layer of the rail bed of the railway, which affects railway operation and maintenance. The bonding strength between the steel bars and concrete is not high in the prior art, resulting in further development of slippage and joint removal.
A reinforcement device is designed, including reinforcement tube, upper reinforcement and lower reinforcement. A reinforcement groove is provided on the pipe wall of the reinforcement tube. By setting up upper reinforcement and lower reinforcement, the concrete and reinforcement device at the reinforcement site are better bonded, thereby limiting the occurrence of the gap between the railing plate and the backfilling layer.
Effectively bonding the track bed plate and the backfill layer of the arches to limit the occurrence of separation joints, improve the safe operation of the railway, and the device has a simple structure, strong practicality and significant economic benefits.
Smart Images
Figure CN222908449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of controlling the separation of the railway ballast slab. Background Technique
[0002] As a form of the ballast bed structure, the integral railway ballast bed has been widely used in the tunnel sections of railways due to its good integrity and small deformation. However, in the actual process, due to some defects in the tunnel, problems such as separation, water seepage between the ballast slab of the integral railway ballast bed and the inverted arch backfill layer, and the hollow hanging of the integral ballast bed occur, which has a great impact on the operation and maintenance of the railway.
[0003] In the process of rectifying the diseases such as separation and hollow hanging of the railway ballast slab in the tunnel at the present stage, measures such as injecting low-viscosity grouting resin between the ballast slab and the inverted arch backfill layer for bonding, and then implanting steel bars and anchoring in the separated section between the ballast slab and the inverted arch backfill layer are mainly adopted, and certain effects have been achieved. However, due to the defects in the waterproof and drainage measures in individual tunnels, water still seeps inward along the interface between the ballast slab and the inverted arch backfill layer. Coupled with the repeated action of the train load, the interface cracks again. On the other hand, due to the low bonding strength between the implanted steel bars of the steel bar implantation and the ballast slab, the steel bars and the concrete slip off from each other, resulting in the further development of the separation. Therefore, a device that can effectively control the development of the separation between the integral ballast bed and the inverted arch backfill layer is urgently needed on site. Summary of the Invention
[0004] The purpose of the utility model is to provide a steel bar implantation device for controlling the development of the separation between the ballast slab and the inverted arch backfill layer, which can effectively bond the ballast slab and the inverted arch backfill layer together to control the development of the separation.
[0005] The utility model is a steel bar implantation device for controlling the separation of the ballast slab, including three parts: a steel bar implantation tube 1, an upper steel bar 2, and a lower steel bar 3. The steel bar implantation tube 1 vertically penetrates through the ballast slab 4 and the inverted arch backfill layer 5. There are steel bar implantation grooves 7 on the tube wall 6 of the steel bar implantation tube 1, including an upper steel bar implantation groove 7-1 and a lower steel bar implantation groove 7-2; among them, the upper steel bar implantation groove 7-1 is in the area of the ballast slab 4, and the lower steel bar implantation groove 7-2 is located in the area of the inverted arch backfill layer 5; the number of steel bar implantation grooves 7 provided in the ballast slab 4 and the inverted arch backfill layer 5 by the steel bar implantation tube 1 is determined by the magnitude of the force generating the separation between the ballast slab 4 and the inverted arch backfill layer 5, and one or more layers of steel bar implantation grooves 7 can be provided in the vertical direction according to the number of steel bar implantation grooves 7; each layer of steel bar implantation grooves 7 should be symmetrically arranged with respect to the steel bar implantation tube 1.
[0006] The beneficial effects of the present utility model are as follows: The rebar planting device for controlling the joint separation of the ballast slab better bonds the concrete at the rebar planting part with the rebar planting device by setting the upper rebar and the lower rebar, thereby better restricting the generation of joint separation between the ballast slab and the inverted arch backfill layer, and playing a good promoting role in the safe operation of the railway. The structural form of this patent is relatively simple, with strong practicability and remarkable economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 is a perspective view of the rebar planting device for controlling the joint separation of the ballast slab, Figure 2 is a sectional view taken along line I-I when the rebar does not protrude from the rebar planting tube wall, Figure 3 is a detailed structure diagram of the upper rebar planting part, Figure 4 is a detailed structure diagram of the lower rebar planting part, Figure 5 is a sectional view taken along line I-I when the rebar protrudes from the rebar planting tube wall. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0008] As Figure 1 、 Figure 2 shown, the rebar planting device for controlling the joint separation of the ballast slab of the present utility model includes three parts: a rebar planting tube 1, an upper rebar 2, and a lower rebar 3. The rebar planting tube 1 vertically penetrates through the ballast slab 4 and the inverted arch backfill layer 5. A rebar planting groove 7 is provided on the tube wall 6 of the rebar planting tube 1, including an upper rebar planting groove 7-1 and a lower rebar planting groove 7-2. Among them, the upper rebar planting groove 7-1 is located in the area of the ballast slab 4 and the upper rebar 2 is placed, and the lower rebar planting groove 7-2 is located in the area of the inverted arch backfill layer 5 and the lower rebar 3 is placed. The number of rebar planting grooves 7 provided in the ballast slab 4 and the inverted arch backfill layer 5 by the rebar planting tube 1 is determined by the magnitude of the force causing the joint separation between the ballast slab 4 and the inverted arch backfill layer 5, and one or more layers of rebar planting grooves 7 can be provided in the vertical direction according to the number of rebar planting grooves 7 provided; each layer of rebar planting grooves 7 should be symmetrically arranged with respect to the rebar planting tube 1 to keep the rebar planting tube 1 only under axial tension and not under additional bending moment.
[0009] As Figure 2 、 Figure 3 、 Figure 5As shown in the figure, the upper rebar 2 is placed in the upper rebar groove 7-1 on the wall 6 of the rebar pipe 1. The upper rebar 2 includes an upper rebar rod 8, a rotating shaft A 9, a helical spring A 10, a retaining strip A 11, and a rotating shaft B 12. The upper rebar rod 8 includes a front rod A 8-1 and a rear rod A 8-2. The retaining strip A 11 can rotate around the rotating shaft B 12; the front end A 11-1 of the retaining strip abuts against the rear rod A 8-2 of the upper rebar rod 8 to control the rotation of the upper rebar rod 8, and the rear end A 11-2 of the retaining strip extends into the interior of the rebar pipe 1. The end of the front end A 11-1 of the retaining strip A 11 is set to be arc-shaped to ensure that the sliding of the contact surface between the end of the front end A 11-1 and the rear rod A 8-2 of the upper rebar rod 8 is relatively smooth during the rotation of the retaining strip A 11. One end of the helical spring A 10 is fixed on the rotating shaft A 9, and the other end is fixed at the root of the front rod A 8-1 of the upper rebar rod 8. The installation direction of the helical spring A 10 causes the front rod A 8-1 to rotate counterclockwise from bottom to top when the upper rebar rod 8 rotates around the rotating shaft A 9; when the retaining strip A 11 rotates counterclockwise around the rotating shaft B 12 with the rear end A 11-2 moving downward under an external force, the upper rebar rod 8 can rotate counterclockwise around the rotating shaft A 9 under the action of the helical spring A 10 until the upper rebar rod 8 is horizontal. At this time, the upper rebar rod 8 is limited by the groove wall of the upper rebar groove 7-1 and the rotating shaft A 9 and cannot continue to rotate counterclockwise. After the upper rebar rod 8 is bonded to the surrounding filled concrete, it can play a role in preventing the rebar pipe 1 from being pulled downward in the track slab 4.
[0010] As Figure 2 , Figure 4 , Figure 5As shown in the figure, the lower rebar 3 is placed in the lower rebar groove 7-2 on the wall 6 of the rebar pipe 1. The lower rebar 3 includes a lower rebar rod 13, a rotating shaft C 14, a helical spring B 15, a retaining strip B 16, and a rotating shaft D 17. The lower rebar rod 13 includes a front rod B 13-1 and a rear rod B 13-2. The retaining strip B 16 can rotate around the rotating shaft D 17. The front end B 16-1 of the retaining strip abuts against the rear rod B 13-2 of the lower rebar rod 13 to control the rotation of the lower rebar rod 13. The rear end B 16-2 of the retaining strip B 16 extends into the interior of the rebar pipe 1. The end of the front end B 16-1 of the retaining strip B 16 is set to be arc-shaped to ensure that the sliding of the contact surface between the end of the front end B16-1 and the rear rod B 13-2 of the lower rebar rod 13 is relatively smooth during the rotation of the retaining strip B 16. One end of the helical spring B 15 is fixed on the rotating shaft C 14, and the other end is fixed at the root of the front rod B 13-1 of the lower rebar rod 13. The installation direction of the helical spring B 15 of the lower rebar rod 13 is opposite to the installation direction of the helical spring A 10 of the upper rebar rod 8, so that when the lower rebar rod 13 rotates around the rotating shaft C 14, the front end of the front rod B 13-1 generates a clockwise rotation from top to bottom; when the rear end B16-2 of the retaining strip B 16 rotates counterclockwise around the rotating shaft D 17 under the action of an external force, the lower rebar rod 13 can rotate clockwise around the rotating shaft C 14 under the action of the helical spring B 15 until the lower rebar rod 13 is horizontal. At this time, the lower rebar rod 13 is limited by the groove wall of the lower rebar groove 7-2 and the rotating shaft C 14 and cannot continue to rotate clockwise. After the lower rebar rod 13 is bonded to the surrounding filled concrete, it can play a role in preventing the rebar pipe 1 from being pulled upward in the inverted arch backfill layer 5.
[0011] The application method of the rebar planting device for controlling the separation of the ballast slab is as follows:
[0012] Step (1): Determine the number of upper rebars 2 and lower rebars 3 in the ballast slab 4 and the inverted arch backfill layer 5, and then determine the length of the rebar pipe 1 buried in the ballast slab 4 and the inverted arch backfill layer 5.
[0013] Step (2): Place the rebar pipe 1 into the holes set in the ballast slab 4 and the inverted arch backfill layer 5, and then use a thin rod to press down the rear end A 11-2 of the retaining strip A 11 and the rear end B 16-2 of the retaining strip B 16 in sequence from top to bottom in the rebar pipe 1, so that the upper rebar 2 and the lower rebar 3 rotate and extend out of the wall 6 of the rebar pipe until the upper rebar 2 and the lower rebar 3 are horizontal.
[0014] Step (3): Fill fine-grained concrete into the holes outside the rebar pipe 1. During the filling process, pay attention to keeping the vertical axis of the rebar pipe 1 perpendicular to the upper surface of the ballast slab 4. After pouring, pour non-shrinkage mortar into the rebar pipe 1.
[0015] During the operation of the train in step (4), the bonded rebar pipes 1 and the surrounding concrete shall be regularly inspected for any cracking, settlement, etc. In case of the above-mentioned situations, inspections and treatments shall be carried out in a timely manner.
Claims
1. A reinforcing bar embedding device for controlling the gap between track slabs, comprising a reinforcing bar embedding tube (1), an upper reinforcing bar embedding (2), and a lower reinforcing bar embedding (3), characterized in that The reinforcing bar pipe (1) vertically penetrates the ballast plate (4) and the inverted arch backfill layer (5), and a reinforcing bar groove (7) is provided on the pipe wall (6) of the reinforcing bar pipe (1), including an upper reinforcing bar groove (7-1) and a lower reinforcing bar groove (7-2); wherein the upper reinforcing bar groove (7-1) is located in the ballast plate (4) region, and the lower reinforcing bar groove (7-2) is located in the inverted arch backfill layer (5) region; the number of reinforcing bar grooves (7) provided in the ballast plate (4) and the inverted arch backfill layer (5) of the reinforcing bar pipe (1) is determined by the magnitude of the force controlling the separation of the ballast plate (4) and the inverted arch backfill layer (5), and one or more layers of reinforcing bar grooves (7) can be provided in the vertical direction according to the number of reinforcing bar grooves (7); each layer of reinforcing bar grooves (7) should be symmetrically provided with respect to the reinforcing bar pipe (1).
2. The reinforcing bar implanting device for controlling the gap of the ballast slab according to claim 1 is characterized in that The upper reinforcement bar (2) is placed in the upper reinforcement bar groove (7-1) of the wall (6) of the reinforcement bar pipe (1). The upper reinforcement bar (2) comprises an upper reinforcement bar rod (8), a rotation axis A (9), a coil spring A (10), a support bar A (11), and a rotation axis B (12). The upper reinforcement bar rod (8) comprises a front bar A (8-1) and a rear bar A (8-2). The support bar A (11) can rotate around the rotation axis B (12). The front end A (11-1) of the support bar abuts against the rear bar A (8-2) of the upper reinforcement bar (8). The end of the front end A (11-1) of the support bar A (11) is arranged in an arc shape, and the rear end A (11-2) of the support bar extends into the interior of the reinforcement tube (1); one end of the coil spring A (10) is fixed on the rotation axis A (9), and the other end is fixed on the root of the front rod A (8-1) of the upper reinforcement rod (8); the installation direction of the coil spring A (10) is such that when the upper reinforcement rod (8) rotates around the rotation axis A (9), the front rod A (8-1) generates a counterclockwise rotation from bottom to top until the upper reinforcement rod (8) is horizontal.
3. The reinforcing bar embedding device for controlling the gap of the track bed slab according to claim 1 is characterized in that The lower reinforcement bar (3) is placed in the lower reinforcement bar groove (7-2) of the wall (6) of the reinforcement bar pipe (1). The lower reinforcement bar (3) includes a lower reinforcement bar rod (13), a rotation axis C (14), a coil spring B (15), a support bar B (16), and a rotation axis D (17). The lower reinforcement bar rod (13) includes a front bar B (13-1) and a rear bar B (13-2). The support bar B (16) can rotate around the rotation axis D (17). The front end B (16-1) of the support bar supports the rear bar B of the lower reinforcement bar (13). (13-2), the end of the front end B (16-1) of the support bar B (16) is arranged to be arc-shaped, and the rear end B (16-2) of the support bar B (16) extends into the interior of the reinforcement tube (1); the installation direction of the coil spring B (15) of the lower reinforcement rod (13) is opposite to the installation direction of the coil spring A (10) of the upper reinforcement rod (8), so that when the lower reinforcement rod (13) rotates around the rotation axis C (14), the front rod B (13-1) rotates clockwise from top to bottom until the lower reinforcement rod (13) is horizontal.