String Transport System Prestressed Load Redistribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing string transport systems, such as those by Yunitski, face challenges in achieving straightness and 'velvet-smooth' track effects due to natural sagging and complex manufacturing processes, which also result in high material intensity and cost, particularly in anchor supports, and do not provide sufficient rigidity and reliability.
Innovation Solution
The system incorporates end and intermediate supports with prestressed load-bearing elements, where up to half or a tenth of these elements are rigidly fixed in fastening units on intermediate supports, allowing for load redistribution and increased stability, using a combination of prestressed load-bearing members with hardening mixtures and bodyless or embodied configurations to enhance rigidity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If inserts of variable height are used to equalize natural sagging of the load-bearing member, then the sagging is compensated, but the technology of manufacturing and installation is complicated and the straightness of track structure cannot be achieved
Solution Approach 1:
The patent removes the complex variable height inserts from the system and replaces them with a simple adjustment mechanism at the support points. The load-bearing member itself is made adjustable in length, allowing direct compensation of sagging without intermediate components, thereby achieving track straightness while simplifying manufacturing and installation technology.
Solution Approach 2:
The patent changes the parameter of the load-bearing member from fixed length to adjustable length. This allows the span length to be modified to compensate for natural sagging, achieving the desired track straightness and 'velvet-smooth track' effect without complex inserts or gaskets.
2Strength
If multiple supporting elements of various height are used to connect main cord with auxiliary cord, then bearing capacity is provided, but the process of manufacturing rail cords in field conditions is complicated
Solution Approach 1:
The patent eliminates the complex system of multiple supporting elements of various heights and replaces it with a single adjustable support mechanism. The load-bearing member's adjustable span length provides the necessary bearing capacity without requiring multiple different height components, greatly simplifying field manufacturing and assembly.
Solution Approach 2:
The adjustable load-bearing member serves multiple functions: it provides the primary structural support, compensates for sagging, and adjusts span length to maintain optimal strain-stress state. This single multi-functional component replaces the previous system of multiple specialized supporting elements, simplifying both manufacturing and installation.
3Reliability
If end anchor supports are designed to endure maximum loads from load-bearing elements, then structural integrity is maintained, but materials intensity and cost are increased
Solution Approach 1:
The patent introduces dynamic adjustability to the support system, allowing the span length to be optimized for operational conditions. This dynamic capability enables the structure to maintain structural integrity with more efficient material distribution, reducing the excessive material intensity in anchor supports while preserving reliability.
Solution Approach 2:
By making the load-bearing member span length adjustable, the system can optimize the distribution of forces along the span. This allows for more efficient structural design where materials are used more effectively, reducing the need for overly robust (and material-intensive) anchor supports while maintaining the required structural integrity and reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration achieves load relief, increased reliability, and longitudinal flatness, reducing material and cost while ensuring a 'velvet-smooth' track effect and improved operational characteristics by redistributing stresses and increasing the span between supports.
Implementation Method 1
plurality of prestressed load-bearing elements 5 tensioned between supports
Implementation Method 2
load redistribution and increased stability, using a combination of prestressed load-bearing members
Data Source
Figure 1~3
Figure 4
Figure 5~6
AI summary
The invention relates to the area of transport communications, in particular, to the integrated aboveground transport systems of a string type, with transport infrastructure providing speed cargo and passenger traffic. The string transport system by Yunitski represents end (2) and intermediate (3) supports mounted on foundation (1), and at least one rail cord (4) fastened in spans (L) between them, and at least one wheeled vehicle (7) guided thereon. Hereby, load-bearing elements (5) of load-bearing member (6) of rail cord (4) are tensioned and anchored, according to design option, both on end (2) and intermediate (3) anchor supports, which allows to redistribute, between end (2) and intermediate (3) anchor supports, the effect of axial forces which create prestressing of load-bearing elements (5) of rail cord (4). Partial anchoring of load-bearing elements (5) on intermediate (3) anchor supports allows to evenly distribute combined tension force of load-bearing member (6), transferred to intermediate (3) anchor supports, and thereby ensure their load relief, in order to increase stability of end (2) supports, reliability of rail-string transport overpass and achieve "velvet-smooth track" effect, with decrease in material capacity and cost of both supports and load-bearing member (6), alongside with load-bearing elements (5) and rail cord (4) as a whole.