Railway Track Base Plate with Detachable Roadway Panels
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Solution Overview
Problem
Current track constructions in crossings and crossings face challenges in maintaining consistent elastic behavior with adjacent sections due to changes in rail profiles and support types, leading to increased maintenance costs and reduced durability, particularly at level crossings where a rigid and non-deformable road surface is required for maintenance.
Innovation Solution
A track construction featuring a base plate with detachably attached roadway panels, using fastening elements like screws and eccentrics, and a non-elastic filling between the subsoil and base plate, allowing for easy assembly, decoupling of track and road, and improved maintenance accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If track elements rest directly on sleepers or rails to maintain elasticity, then the track functionality is preserved, but the stress on the track increases and maintenance requirements increase
Solution Approach 1:
The track construction is divided into modular components: base plates with integrated road surface structures, separate fastening systems, and discrete support elements. This segmentation allows the track to be divided into replaceable sections, facilitating easier maintenance and repair without affecting the entire track structure.
Solution Approach 2:
Base plates serve as intermediary elements between the sleepers/rails and the road surface. These base plates distribute loads and reduce stress concentration on the track elements while maintaining the required elasticity. The base plates act as a mediator that protects the track from excessive stress.
2Duration of action of stationary object
If the road surface is made rigid and non-deformable for maintenance, then the road surface durability is improved, but it becomes difficult to dismantle and reuse for track maintenance
Solution Approach 1:
The road surface is constructed as separate panels that are detachably fastened to the base plates. This segmentation allows the road surface panels to be easily removed, relocated, and reused for track maintenance activities while maintaining a durable road surface for normal operation.
Solution Approach 2:
The fastening system allows the road surface panels to transition between a fixed state during normal operation (providing durability) and a movable state during maintenance (allowing easy removal and relocation). This dynamic capability resolves the contradiction between durability and maintainability.
3Reliability
If track and road surface function together to maintain elasticity, then the track functionality is preserved, but the stress on the track increases
Solution Approach 1:
Base plates serve as intermediary elements that decouple the direct load path between the road surface and the track elements. The base plates distribute and dissipate stresses, reducing the stress concentration on the rails and sleepers while maintaining the elastic behavior of the track.
Solution Approach 2:
The construction separates the track elements from the road surface through discrete base plates, allowing each component to function independently with optimized stress distribution. This segmentation prevents stress accumulation that would occur in an integrated structure.
4Reliability
If transition structures are added to compensate for rail deflection differences, then the adverse effects on the track are reduced, but the device complexity increases
Solution Approach 1:
The base plates serve multiple functions simultaneously: they support the track elements, provide a mounting surface for the road surface panels, distribute loads to reduce stress on the track, and inherently provide the necessary transition characteristics for rail deflection compensation. This multi-functionality eliminates the need for separate transition structures.
Solution Approach 2:
The functions of track support, road surface mounting, stress distribution, and transition provision are merged into a single integrated base plate component. This consolidation simplifies the overall structure by eliminating the need for separate transition structures while maintaining all required functions.
Data Source
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AI summary
The present invention relates to a track construction (10) with at least one track (14) for rail vehicles, wherein the track (14) is arranged on a base plate (12) by means of at least one track fastening (16), wherein a roadway construction (24, 24a, 24b) is detachably fastened to the base plate (12) by means of fastening elements (32, 34, 36, 37).