Coiled Wire Mesh Barriers for Train Platform Safety and Flow
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Solution Overview
Problem
Existing right-of-way (ROW) barriers for train platforms are challenging to implement due to the need for a balance between practicality, safety, passenger flow rates, cost, and aesthetics, and often pose risks to pedestrians, encourage vandalism, or create bottlenecks.
Innovation Solution
A coiled wire mesh system with vertical supports, top and bottom mesh tracks, and flexible metal mesh barriers that can be opened or closed to allow passenger passage, providing safety while maintaining aesthetic appeal and minimizing bottlenecks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fencing is used as a ROW barrier, then safety is improved, but passenger flow rate deteriorates due to bottlenecking
Solution Approach 1:
The barrier system employs movable mesh sections that can dynamically transition between closed and open positions. The mesh sections are mounted on horizontal tracks and can be repositioned along the track, allowing the barrier to adapt its configuration based on operational requirements. This dynamic capability enables the system to maintain safety when closed and facilitate passenger flow when opened, resolving the contradiction between safety and passenger flow rate.
2Reliability
If fencing is used as a ROW barrier, then safety is improved, but passenger travel time increases due to bottlenecks
Solution Approach 1:
The movable mesh sections can be quickly repositioned along the horizontal tracks, enabling rapid transition between barrier and passage states. This dynamic repositioning capability minimizes the time passengers spend waiting for barrier openings, thereby reducing travel time loss while maintaining safety when the barrier is closed.
3Reliability
If traditional fencing is used as a ROW barrier, then safety is improved, but ease of operation deteriorates due to maintenance concerns
Solution Approach 1:
The system uses flexible mesh sections instead of rigid fencing panels. These mesh sections can be easily rolled along the horizontal tracks and are simpler to install, remove, and maintain compared to traditional rigid fencing. The flexible nature of the mesh allows for easier handling during maintenance operations while maintaining equivalent safety performance.
Data Source
AI summary
A barrier system for passenger safety prevents passengers from falling off a platform edge near a train track. The system includes a bottom mesh track, a top mesh track, a set of rollers, and a flexible metal mesh barrier. The bottom mesh track is positioned approximately parallel to a platform surface and extends approximately parallel to an edge representing a drop off between the platform surface and a track used by a train or subway. The top mesh track is attached to the ceiling of the platform and is approximately parallel to the bottom mesh track. A set of rollers are positioned within an interior of the bottom mesh track and the top mesh track. The set of rollers connect to the flexible metal mesh barrier allowing it to be slidably coupled so that it opens and closes along a length defined by the top and bottom mesh tracks.