Floating slab ballast bed structure
By pouring steps on both sides of the floating slab bed structure and pre-built drainage pipes, the problem of connecting the drainage system between the floating slab bed and the ordinary concrete slab bed structure is solved, and excellent drainage performance and vibration damping effect are achieved.
Patent Information
- Application Number
- CN202421256300.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-04
AI Technical Summary
When a floating plate bed structure in the medium and high vibration-absorbing section is partially adopted in the tunnel, there is a difference between the drainage system layout of the ordinary concrete bed structure, which leads to the design of how to effectively connect the structures to ensure drainage performance.
By pouring steps on both sides of the floating slab bed structure and pre-built drain pipes at the step positions, the organic connection between the floating slab bed structure and the ordinary concrete slab bed structure is achieved to ensure drainage performance.
The drainage performance of the floating slab bed area is improved, and the vibration damping effect is improved. The structure is simple and reasonable, the construction is convenient, and it is suitable for promotion.
Smart Images
Figure CN222631968U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of floating plate roadbeds, in particular to a floating plate roadbed structure. Background Art
[0002] At present, with the rapid development of rail transit, the floating slab ballast structure can be used in areas with medium and high vibration reduction requirements due to its vibration reduction effect. However, when the floating slab ballast structure is used in the medium and high vibration reduction areas in the tunnel, it must be connected with the ordinary concrete ballast structure on both sides to ensure the smoothness of the line. In this case, due to the particularity of the floating slab ballast structure, there is a difference in the layout of the drainage system between it and the ordinary concrete ballast structure. In addition to considering how to connect the structures during design, it is also necessary to consider how to effectively connect the different drainage systems of the two to ensure drainage performance. Therefore, how to design the drainage of the ballast structure is a technical problem that needs to be solved urgently. Summary of the invention
[0003] The purpose of the utility model is to provide a floating slab ballast structure in view of the above-mentioned deficiencies of the prior art, by adding cast steps on both sides of the floating slab ballast structure and pre-burying drainage pipes at the step positions, so as to achieve an organic connection between the floating slab ballast structure and the ordinary concrete ballast structure, thereby ensuring drainage performance.
[0004] The purpose of this utility model is achieved by the following technical solutions:
[0005] A floating plate ballast bed structure comprises a floating plate, wherein the floating plate is supported on a base concrete through a vibration isolator, and a steel rail is arranged on the floating plate. The invention is characterized in that steps higher than the floating plate are cast on both sides of the floating plate, and a drainage pipe is pre-buried in the concrete of the steps, and the drainage pipe is connected to a lateral ditch of an arrival structure adjacent to the floating plate ballast bed structure to achieve drainage.
[0006] A drainage ditch is arranged on the base concrete and is located at a gap between the base concrete and the floating slab.
[0007] The drainage pipes are arranged along the line direction.
[0008] A sealing rubber is arranged at a position adjacent to the tunnel segment on the outer side of the surface of the step.
[0009] The utility model has the advantages of effectively improving the vibration reduction effect while improving the drainage performance of the floating plate ballast section; having a simple and reasonable structure, convenient construction and being suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0011] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:
[0012] like Figure 1 As shown in the figure, the marks 1-7 respectively represent: tunnel segment 1, concrete floating plate 2, step 3, base concrete 4, drainage ditch 5, drainage pipe 6, sealing rubber 7.
[0013] Example: Figure 1 As shown, the main body of the floating plate track bed structure in this embodiment is a steel spring floating plate track bed, which floats a concrete track bed plate 2 with a certain mass and stiffness on a steel spring vibration isolator, in which a spiral steel spring and viscous damping are arranged to form a mass-spring vibration isolation system. A spiral spring support structure is used between the concrete floating plate 2 and the inner wall of the tunnel segment 1. The track vibration caused by the train running is transmitted to the inner wall of the tunnel segment 1 after passing through the spiral spring. It can provide sufficient inertial mass to offset the dynamic load generated by the train. Only the static load and a small amount of residual dynamic load will be transmitted to the foundation structure through the elastic support to achieve a vibration reduction effect.
[0014] In this embodiment, a base concrete 4 is provided at the bottom of the concrete floating slab 2, with a gap between the base concrete 4 and the concrete floating slab 2, and the concrete floating slab 2 is supported on the base concrete 4 through a steel spring isolator. A drainage ditch 5 is provided at the center of the base concrete 4 to drain water from the floating slab ballast section, especially the leakage water of the tunnel segment 1. In some cases, the drainage ditch 5 is further discharged through the drainage transition section provided downstream and then converges to the common ballast lateral ditch downstream.
[0015] Steps 3 are cast on both sides of the concrete floating slab 2, and the height of the steps 3 is higher than the height of the rails arranged on the concrete ballast slab 2. At this time, in the limited space of the cross section of the tunnel segment 1, the mass of the concrete floating slab 2 can be relatively increased by casting the steps 3 based on the principle of the attached mass-spring vibration isolation system, thereby improving the vibration reduction effect.
[0016] like Figure 1 As shown, drainage pipes 6 are pre-buried in the steps 3 on both sides of the concrete floating slab 2, which are connected to the lateral drainage ditches of the adjacent upstream ordinary roadbed to achieve drainage, so that the water in the lateral ditches of the ordinary roadbed does not need to flow into the drainage ditch 5 under the concrete floating slab 2, thereby improving the drainage performance of the floating slab roadbed section.
[0017] In the specific implementation of this embodiment: the drainage pipe 6 is arranged along the line direction to achieve drainage communication between the floating slab roadbed section and the ordinary roadbed sections adjacent to the upstream and downstream.
[0018] A sealing rubber 7 is provided on the outer side of the surface of the step 3 adjacent to the tunnel segment 1 , and the sealing rubber 7 is used to ensure that the gap between the step 3 and the tunnel segment 1 is sealed to prevent water intrusion.
[0019] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.
Claims
1. A floating plate ballast structure, comprising a floating plate, the floating plate being supported on a base concrete through a vibration isolator, and a steel rail being arranged on the floating plate, characterized in that: Steps higher than the floating slab are cast on both sides of the floating slab, drainage pipes are pre-buried in the concrete of the steps, and the drainage pipes are connected to the lateral ditch of the on-site structure adjacent to the floating slab ballast structure to achieve drainage.
2. A floating slab track bed structure according to claim 1, characterized in that: A drainage ditch is arranged on the base concrete and is located at a gap between the base concrete and the floating slab.
3. A floating slab track bed structure according to claim 1, characterized in that: The drainage pipes are arranged along the line direction.
4. The floating slab track bed structure according to claim 1, characterized in that: A sealing rubber is arranged at a position adjacent to the tunnel segment on the outer side of the surface of the step.