Keynote lecture: vulnerability of interspersed railway tracks exposed to flood and washaway conditions
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Colleges, School and Institutes
- Japan Railway Technical Research Institute
In many countries, timber sleepers have been widely used in traditional rail-way networks. Over the time, timbers degrade and it becomes more difficult to seek cost-effective hardwood sleepers to replace the deteriorated timber sleepers. To enable a short-term solution, many infrastructure managers adopt the interspersing method of track maintenance. The interspersed pat-tern sleeper, a spot replacement of old timber sleeper with concrete or com-posite counterparts, of railway track is often used as a temporary mainte-nance for secondary railway lines such as yards, balloon loops or siding. It is observed that performance of interspersed tracks can quickly deteriorate when the tracks are exposed to heavy rains and floods. In many cases, ballast washaway can be often observed. This study is the world first to demonstrate the influences of ballast washaway on the vulnerability assessment of inter-spersed sleeper railway using nonlinear finite element simulations, STRAND7. Two moving point loads representing an axle load along each rail has been established to investigate the worst-case, potential instabilities for impaired performance of sleepers and differential settlement of the track. In this study, the emphasis is placed on the effect of ballast washaway on the dynamic displacement and acceleration of rails. The insight will help track engineers develop appropriate climate change adaptation method and policy for operations of interspersed railway tracks facing extreme rainfall and flooding conditions.
Not yet published as of 13/09/2021.
|Title of host publication||Proceedings of VCDRR 2021|
|Publication status||Accepted/In press - 20 Mar 2021|
|Event||Virtual Conference on DISASTER RISK REDUCTION : Civil Engineering for a Disaster Resilient Society - |
Duration: 15 Mar 2021 → 20 Mar 2021
|Name||Lecture Notes in Civil Engineering|
|Conference||Virtual Conference on DISASTER RISK REDUCTION|
|Period||15/03/21 → 20/03/21|