Underpinning & Piling Platforms – Kidbrooke Square, London

Temporary Works Support

Due to the scale of the project there were a wide range of temporary works that needed to be designed for this project. 

Including the design of five independent piled tower crane bases, sheet pile wall propping & footbridge unpinning, as well as a range of other temporary works support listed below

• Sheet pile wall design
• Plant load assessment
• Hoarding 
• Piling mats
• Cabin foundations
• Formwork checks
• Mobile crane positioning

Retaining Wall Propping

Significant sheet pile walls were designed by a supporting contractor to support the A2 road in the temporary condition and were to be incorporated into the permanent works upon completion of the project.

Andun were responsible for the temporary stability of the sheet pile walls prior to the construction of the new structure. We designed a variety of raking props, knee braces and cranked props to provide temporary support across the 4 blocks. 

These were designed in coordination with the permanent works designer to ensure the new structure could be installed around them.

Footbridge Underpinning

To enable the levels of the site to be altered, the existing footbridge that spanned over the rail lines and then under the A2 required alterations to the foundation. The ground level around the footbridge abutment was to be lowered approximately 3m which necessitated significant underpinning.

Andun were responsible for providing temporary support to the bridge in the form of a gantry on temporary piles and sequencing the underpinning. This enabled the works to be undertaken without closing the bridge.