Keywords: optimisation, switches and crossings, failure modes.

Network Rail, the infrastructure manager of the UK, is currently focussing on improving the reliability and performance of switches and crossings layouts. Site investigations have revealed many poorly performing switches and crossings sites which require intensive maintenance intervention with associated costs and safety implications. Analysis, however, has identified many of the root causes which could have been eradicated, or minimised, through better specification and design.

This paper presents the use of modelling and site validation to solve track maintenance issues leading to subsequent improvement in component design. This is supported by practical case studies of how improvements are being achieved by a structured process which includes: undertaking site visits to identify the problem, collecting data for technical analysis and then liaising with local engineers to implement solutions for site specific failures and, where applicable, working with manufacturers to optimise their products based on improved engineering requirements.

The principles identified and lessons learned are applicable to all railways with turnout performance issues.

purchase the full-text of this paper (price £20)

go to the previous paper
return to the table of contents
return to IJRT
purchase this issue (price £80 +P&P)