Ballastless Railway Track Construction Using Temporary Rails
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Solution Overview
Problem
Current methods for constructing ballastless railways are inefficient due to the need for external positioning mechanisms, which are costly, difficult to maneuver in confined spaces, and require specialized labor, leading to slow and expensive construction with potential finishing errors in the concrete bedding.
Innovation Solution
A method that involves adjusting the first concrete layer to match the planned alignment, using temporary rails and a casing to ensure precise placement of a second concrete layer, allowing for permanent rail attachment without external positioning mechanisms, thus simplifying the process and improving alignment and finishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If external positioning mechanisms are used to precisely position rail attachment means, then manufacturing precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by pre-positioning the rail attachment means directly onto the concrete bedding before the concrete hardens. This preliminary placement allows the attachment means to be positioned precisely during the concrete pouring process itself, eliminating the need for complex external positioning mechanisms that would otherwise be required to achieve the same precision after the concrete has set.
Solution Approach 2:
The patent extracts and eliminates the external positioning mechanism from the construction process entirely. Instead of using separate, complex positioning devices to place the rail attachment means, the method integrates the positioning function into the concrete pouring process itself, thereby removing the disturbing element (complex positioning mechanism) from the system.
2Manufacturing precision
If external positioning mechanisms are used for precise rail attachment positioning, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The rail attachment means are pre-positioned on the concrete bedding while the concrete is still fresh and workable. This preliminary action allows positioning to occur during the natural flow of the construction process rather than requiring separate, time-consuming positioning operations, thereby maintaining precision while improving productivity.
Solution Approach 2:
The method enables continuous construction by integrating the positioning of rail attachment means into the concrete pouring process. Instead of stopping to use complex positioning mechanisms, the workflow continues smoothly with attachment means being positioned as part of the concrete placement operation, eliminating idle time and maintaining construction momentum.
3Ease of operation
If manual methods are used for concrete bedding finishing and alignment, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The concrete bedding is prepared with preliminary alignment features and guide elements before the rail attachment means are positioned. This preliminary preparation ensures that the concrete surface is properly aligned and levelled in advance, providing a precise foundation for subsequent rail attachment while keeping the actual finishing operations simple and manual.
Data Source
Figure 1A~1B
Figure 1C~1E
Figure 1F~1I
AI summary
The present invention relates to a method for the construction of a ballastless railway in which a concrete bedding can be constructed in a correct, well-aligned and finished way, regardless of the location where the concrete bedding must be constructed.