Rail back shore frame for railway monolithic track bed construction and railway monolithic track bed construction method

Abstract

The invention discloses a rail back shore frame for railway monolithic track bed construction and a railway monolithic track bed construction method. A rail back shore frame for railway monolithic track bed construction comprises two symmetrically-arranged L-shaped steel components, two supporting rotary rods and two jacks, main bodies of the L-shaped steel components are channel steel beams, one ends of the channel steel beams of the two L-shaped steel components are connected into a whole through bolts, and the other ends of the channel steel beams of the two L-shaped steel components are connected into a whole through bolts. The other end of the channel steel beam of each L-shaped steel component is fixedly connected with a supporting plate extending to the outer side of the channel steel beam, the channel steel beam of each L-shaped steel component is fixedly connected with a vertically-arranged jack, and the piston rod end of each jack is located on the lower portion of the corresponding channel steel beam. The outer side end of a channel steel cross beam of each L-shaped steel component is in vertical threaded connection with a supporting rotary rod, the distance between the two supporting rotary rods is smaller than the distance between the two steel rails, and the jacks are connected with a control device. The device is simple in structure and convenient to operate, the track panel can be accurately positioned, and the construction efficiency of the monolithic track bed can be improved.

Description

Technical Field

[0001] The present invention relates to a track top support frame for railway integral track bed construction, belonging to the technical field of railway construction. The present invention also relates to a method for railway integral track bed construction using the track top support frame. Background Art

[0002] At present, when constructing the integral track bed of railway, a set of track support frames are usually used for construction. The set of support frames are used as fulcrums on the outside of the line. The track is first lifted by jacking equipment, and then the track is supported to the designed elevation by the set of support frames. Then, steel bars are tied and concrete is poured under the track. After the reinforced concrete solidifies, the set of support frames are removed. The tooling needs to be adjusted and measured manually, which is cumbersome to operate and has a low degree of automation. In addition, the tooling equipment is large in size and weight, and it is difficult to transport and install. Therefore, there is an urgent need for a lightweight equipment that is easy to realize automated construction to serve the integral track bed construction. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a track top support frame for railway integral track bed construction, which is easy to construct and facilitates accurate positioning of the track row.

[0004] The present invention is realized through the following technical scheme: a track top support frame for railway integral roadbed construction, characterized in that it comprises two symmetrically arranged L-shaped steel members, two supporting swivel rods and two jacks, the main body of the L-shaped steel member is a channel steel beam, one end of the channel steel beams of the two L-shaped steel members are connected as a whole by bolts, the other end of the channel steel beams of the L-shaped steel members is fixedly connected with a support plate extending to the outside of the channel steel beams, each channel steel beam of the L-shaped steel member is fixedly connected with a vertically arranged jack, the piston rod end of the jack is located at the lower part of the channel steel beam, the outer end of the channel steel beam of each L-shaped steel member is vertically threaded with a supporting swivel rod, the distance between the two supporting swivel rods is smaller than the distance between the two rails, and each jack is connected with a control device.

[0005] Furthermore, the channel steel beam of the L-shaped steel member is a double-jointed channel steel.

[0006] Furthermore, the height of the channel steel used in the channel steel crossbeam is 140 mm; the support plate is a 40 mm thick steel plate, and the width of the support plate is 20 cm; and the diameter of the supporting rotary rod is 50 mm.

[0007] Furthermore, the support plate is overlapped and fixed to the bottom of the channel steel beam, and the support rotary rod is arranged at the overlapped position of the support plate and the channel steel beam.

[0008] The present invention also provides a method for constructing a railway integral track bed using the track top support frame, which comprises the following steps:

[0009] Step 1: Construct the integral roadbed foundation treatment and the integral roadbed mattress layer, and use the total station to release the track center coordinates;

[0010] Step 2: Pre-lay the sleepers, rails and fasteners according to the designed position to form the track row;

[0011] Step 3: A track top support frame is installed between two rails at every two sleeper gaps. The support plates of the two L-shaped steel components of the track top support frame are respectively located at the lower part of the two rails. The piston rod end of each jack is closely attached to the concrete surface of the integral roadbed mat layer through the control device, and each support rotary rod is manually rotated to the top of the integral roadbed mat layer;

[0012] Step 4: Use the control device to control the jacks of all track top supports to synchronously lift the rail row to the designed elevation and lock the jacks;

[0013] Step 5: Manually rotate each support rod to the top of the integral road mattress layer, and wrap the PVC sleeve on the outside of each support rod;

[0014] Step 6: Use the control device to control the jacks of all track top support frames to retract to the initial position synchronously, close the jacks, and support the track row through each support swing rod;

[0015] Step 7: Tie the integral ballast steel bars and outer formwork under the rails;

[0016] Step 8: pouring the monolithic roadbed concrete and maintaining it;

[0017] Step 9: Remove the top support frames of each track;

[0018] Step 10: Fill the PVC embedded pipe with concrete grout.

[0019] Furthermore, in step 4, an automatic total station is used to collect the elevation data of the top of each jack, and the collected data is analyzed by a central control computer to calculate the height to which each track top support frame needs to be lifted, and then the corresponding jack is controlled to lift, so as to achieve precise positioning of the track row.

[0020] The beneficial effects of the present invention are:

[0021] The track top support frame in the present invention is suitable for construction on the inner side of the rail. It has a simple structure, small size, light weight, does not occupy the construction space outside the track, is easy to construct, and is simple and convenient to transport and install. The present invention uses a specially designed track top support frame, which can be controlled by a central control computer and an automatic total station to automatically lift each top support frame to the designed position, thereby realizing precise positioning of the track row, simple construction, convenient operation, and a high degree of automation, which can greatly improve the construction efficiency of the overall roadbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the track top support frame in the present invention;

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure of the left side of the middle track top support frame;

[0024] Figure 3 yes Figure 2 A side view schematic diagram of

[0025] Figure 4 It is a main schematic diagram of the arrangement of the track top support frame during the construction of the integral track bed;

[0026] Figure 5 yes Figure 4 A side view schematic diagram of

[0027] Figure 6 yes Figure 4 A top view schematic diagram of

[0028] Figure 7 It is a schematic diagram of joint control of top supports of each track during the construction of integral trackbed;

[0029] Figure 8 It is a longitudinal section view of the integral roadbed foundation in step 2 of the specific implementation method;

[0030] Fig. 9 is a cross-sectional view of the integral roadbed foundation in step 2 of the specific implementation method;

[0031] Fig.10 It is a longitudinal section view of the integral roadbed foundation in step 3 of the specific implementation method;

[0032] Fig.11 is a cross-sectional view of the integral roadbed foundation in step 3 of the specific implementation method;

[0033] Fig.12 It is a longitudinal section view of the integral roadbed foundation in step 4 of the specific implementation method;

[0034] Fig.13 is a cross-sectional view of the integral ballast foundation in step 4 of the specific implementation method;

[0035] Fig.14 It is a longitudinal section view of the integral roadbed foundation in step 5 of the specific implementation method;

[0036] Fig.15 is a cross-sectional view of the integral roadbed foundation in step 5 of the specific implementation method;

[0037] Fig.16 It is a longitudinal section view of the integral roadbed foundation in step 6 of the specific implementation method;

[0038] Fig.17 is a cross-sectional view of the integral ballast foundation in step 6 of the specific implementation method;

[0039] Fig.18 It is a longitudinal section view of the integral roadbed foundation in step 7 of the specific implementation method;

[0040] Fig.19 is a cross-sectional view of the integral ballast foundation in step 7 of the specific implementation method;

[0041] Fig. 20 It is a longitudinal section view of the integral roadbed foundation in step 8 of the specific implementation method;

[0042] Fig.21 is a cross-sectional view of the integral ballast foundation in step 8 of the specific implementation method;

[0043] In the figure, 1. integral roadbed foundation, 2. concrete cushion, 3. rail, 4. track top support, 5. PVC casing, 6. integral roadbed steel bar, 7. integral roadbed concrete;

[0044] 4.1. Jack, 4.2. Supporting swivel, 4.3. Channel steel beam, 4.4. Support plate, 4.5. Bolts, 4.6. Connecting end plate. DETAILED DESCRIPTION

[0045] The present invention will be further described below by way of non-limiting embodiments and in conjunction with the accompanying drawings:

[0046] As attached Figure 1-Figure 3As shown, a track top support frame 4 for railway integral trackbed construction includes two symmetrically arranged L-shaped steel members, two supporting swivel rods 4.2, and two jacks 4.1. The main body of the L-shaped steel member is a channel steel beam 4.3, which is assembled by two channel steels with a height of 140 mm. A connecting end plate 4.6 is welded to one end of the channel steel beam 4.3 of the L-shaped steel member, and bolt holes are arranged on the connecting end plate 4.6. The other end of the channel steel beam 4.3 of the L-shaped steel member is fixedly connected to a support plate 4.4, which is made of a 40 mm thick steel plate and has a width of 20 cm. One end of the support plate 4.4 is welded and fixed to the end of the channel steel beam 4.3, and the other end of the support plate 4.4 extends to the outside of the channel steel beam 4.3. The ends of the channel steel beams 4.3 of the two L-shaped steel members provided with the connecting end plates are connected as a whole by bolts 4.5 with a diameter of 40 mm. A 10t vertically arranged jack 4.1 is bolted to the channel steel beam 4.3 of each L-shaped steel member, and the stroke of the jack 4.1 is 1000mm. The piston rod end of the jack 4.1 is located at the lower part of the channel steel beam 4.3. The outer end (the end close to the support plate) of the channel steel beam 4.3 of each L-shaped steel member is vertically threaded with a supporting swivel 4.2 with a diameter of 50mm. The distance between the two supporting swivels 4.2 is less than the distance between the two rails. Each jack is connected to a control device.

[0047] To ensure the structural strength of the track top support frame, it is preferred that when the support plate 4.4 of the L-shaped steel member is connected to the channel steel beam 4.3, the support plate 4.4 and the bottom of the channel steel beam 4.3 are overlapped and fixed together, and the overlap length is 550mm. The support rotary rod 4.2 is set at the overlap position of the support plate 4.4 and the channel steel beam 4.3.

[0048] The above-mentioned track support frame is mainly used for the construction of railway type II and III sleeper integral trackbed. When the above-mentioned track support frame is used for the construction of railway integral trackbed, the working state of the jack is connected to the central control computer, and each jack is controlled by the central control computer. A prism is set on the top of each jack, and the elevation data of the top of each jack is collected by the automatic total station. The collected data is analyzed by the central control computer to calculate the height that each support frame needs to be lifted.

[0049] The specific steps include:

[0050] Step 1: Construct the integral roadbed foundation 1 and the concrete cushion 2 of the integral roadbed, and use the total station to release the track center coordinates.

[0051] Step 2: Pre-lay sleepers, rails and fasteners according to the designed positions to form track row 3.

[0052] Step 3: A track top support frame 4 is installed between two rails every two sleeper gaps. The support plates 4.4 of the two L-shaped steel components of the track top support frame 4 are respectively located at the lower part of the two rails. The piston rod end of each jack 4.1 is tightly attached to the concrete surface of the concrete cushion 2 through the control device, and each support rotary rod 4.2 is manually rotated to the top of the concrete cushion 2.

[0053] Step 4: Control the jacks 4.1 of all track support frames to synchronously lift the track row 3 through the central control computer, use the automatic total station to collect the elevation data of the top of each jack, analyze the collected data through the central control computer, calculate the height that each track support frame needs to be lifted, and then control the corresponding jacks to lift the track row to the designed elevation, lock each jack 4.1, and realize the precise positioning of the track row.

[0054] Step 5: Manually rotate each support rotating rod 4.2 to the top of the concrete cushion layer 2, and wrap the PVC sleeve 5 on the outside of each support rotating rod 4.2 to facilitate the later removal of the equipment.

[0055] Step 6: Control the jacks of all track top support frames to retract to their initial positions synchronously through the hollow computer, close the jacks, and support the track row 3 through each supporting rotary rod 5.

[0056] Step 7: Tie the integral ballast steel bars and outer formwork under the rails.

[0057] Step 8: Pour the integral roadbed concrete and maintain it.

[0058] Step 9: Remove the top support frames 4 of each track.

[0059] Step 10: Fill the PVC embedded pipe with concrete grout.

[0060] Matters needing attention during construction:

[0061] 1. The center line of the track and the center line of the line must be accurately positioned before lifting.

[0062] 2. After the rail is lifted to the designed position, each supporting swivel rod 4.2 must be pressed firmly against the cushion layer 2 before the oil in the jack can be returned.

[0063] 3. Before pouring concrete, check whether the PVC sleeve outside the support swing arm has been installed and whether the jack has been returned to its position. Only after confirmation can the next step of construction be carried out.

[0064] The control part in the present invention adopts the existing technology.

[0065] The jacking equipment in the present invention supports track construction with a maximum configuration of 1760 sleepers / km. A device is set every two sleeper gaps. The maximum jacking height is 400mm. Each device can provide a jacking force of 20t, which fully meets the line jacking requirements.

[0066] The present invention adopts digital and lightweight jacking equipment to carry out the overall roadbed construction, which has a high degree of automation, convenient construction and high construction efficiency.

[0067] The other parts of this embodiment are all prior art and will not be described in detail here.

Claims

1. A track top support frame for railway integral track bed construction, characterized by: It includes two symmetrically arranged L-shaped steel members, two supporting swivel rods and two jacks. The main body of the L-shaped steel member is a channel steel beam. One end of the channel steel beams of the two L-shaped steel members are connected as a whole by bolts. The other end of the channel steel beam of the L-shaped steel member is fixedly connected with a support plate extending to the outside of the channel steel beam. A vertically arranged jack is fixedly connected to the channel steel beam of each L-shaped steel member. The piston rod end of the jack is located at the lower part of the channel steel beam. The outer end of the channel steel beam of each L-shaped steel member is vertically threaded with a supporting swivel rod. The distance between the two supporting swivel rods is smaller than the distance between the two rails. Each jack is connected to a control device.

2. The track top support frame for railway monolithic trackbed construction according to claim 1 is characterized by: The channel steel beam of the L-shaped steel member is a double-jointed channel steel.

3. The track top support frame for railway monolithic trackbed construction according to claim 2 is characterized by: The height of the channel steel used in the channel steel crossbeam is 140 mm; the support plate is a 40 mm thick steel plate, and the width of the support plate is 20 cm; the diameter of the supporting rotary rod is 50 mm.

4. The track top support frame for railway monolithic trackbed construction according to claim 3 is characterized by: The support plate is overlapped and fixed with the bottom of the channel steel cross beam, and the support rotary rod is arranged at the overlapped position of the support plate and the channel steel cross beam.

5. A method for constructing a railway integral track bed using the track top support frame according to any one of claims 1 to 4, characterized in that: The steps include: Step 1: Construct the integral roadbed foundation treatment and the integral roadbed mattress layer, and use the total station to release the track center coordinates; Step 2: Pre-lay the sleepers, rails and fasteners according to the designed position to form the track row; Step 3: A track top support frame is installed between two rails at every two sleeper gaps. The support plates of the two L-shaped steel components of the track top support frame are respectively located at the lower part of the two rails. The piston rod end of each jack is closely attached to the concrete surface of the integral roadbed mat layer through the control device, and each support rotary rod is manually rotated to the top of the integral roadbed mat layer; Step 4: Use the control device to control the jacks of all track top support frames to synchronously lift the rail row to the designed elevation and lock the jacks; Step 5: Manually rotate each support rod to the top of the integral road mattress layer, and wrap the PVC sleeve on the outside of each support rod; Step 6: Use the control device to control the jacks of all track top support frames to retract to the initial position synchronously, close the jacks, and support the track row through each support swing rod; Step 7: Tie the integral ballast steel bars and outer formwork under the rails; Step 8: pouring the monolithic roadbed concrete and maintaining it; Step 9: Remove the top support frames of each track; Step 10: Fill the PVC embedded pipe with concrete grout.

6. The method for constructing an integral railway track bed according to claim 5, characterized in that: In step 4, an automatic total station is used to collect the elevation data of the top of each jack. The collected data is analyzed by the central control computer to calculate the height to which each track support frame needs to be lifted. The corresponding jack is then controlled to lift and the track row is accurately positioned.

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