Project Ingatestone, United Kingdom

Ingatestone Underpass

Development of an underpass to permanently replace the level crossing

Without the need for railway closure, Martello were able to install the large diameter piles with the use of their bespoke MP4003 piling rig.

Technical Specifications

Pile Type: Secant Pile Wing Wall

Number of Piles: 51no.         

Diameter: 750mm & 900mm 

Depth: 18.5m

The Challenge

The project required the construction of an underpass on a busy railway line from London to Liverpool - normally requiring the construction to take place during limited night possessions thereby extending the overall project programme. The original scheme was a sheet pile wall solution which could only have been done during night time possessions. Martello were able to offer a bored pile solution. 

The Solution

With the bored pile solution offered by Martello, the work was done during the day time, eliminating the necessity for possessions and thus reducing the programme and cost. 

The MP4003 operated in a 4.5m height configuration and this was outside the collapse radius of the rig to the railway line, thereby providing the surety to the safety of the rail operations. 

Martello constructed the secant piled wing walls for a jacked box bridge structure, and the use of a high strength C50/60 concrete enabled J Murphy & Sons to start excavation immediately after the completion of the piles. The low rig weight and short reinforcement cages significantly lessened the risk of an accidental electrical incidences, but as an additional safety feature, the return conductor of the OLE (overhead line equipment) was isolated during the works. 

The piled solution was able to benefit the client's programme and piling works were completed on week ahead of schedule. 

Project details

Project name

Ingatestone Underpass

Category

Railways

Techniques

Restricted access bored piling, Secant Pile Wall

Contract type

Build

Location

Ingatestone, United Kingdom

Client

J Murphy

Building Period

2014 - 2014

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