Marlborough Road Micro-piling Site Embankment Stabilisation

摘要

The results from the cant measurement graphs show that the site has stabilised from a track settlement point of view. The site will be monitored going forward. This type of treatment offers immediate improvements in track stabilisation where as more traditional solutions using soil nailing, trench sheets and gabions require a longer period for the ground to stabilise and hence improve the track performance. This technique offers 50% cost savings over traditional methods with significantly less disruption to the operational railway. Finite Element Modelling (FEM) using a Dynamic Stiffness Model for railway applications is a key part of the design process without FEM it would not have been possible to identify the potential areas of failure within the embankment and the areas of high stresses under dynamic loading. All of the work was completed without any significant disturbance to the track; maximum recorded heave at rail head was 8mm which settled back once the line was the line was re-opened to traffic No track removal or signal disconnections were required during the works.