Foundation details of anchor arrangement to signal cantilever for British Railways at Fenchurch Street Station London
Sheer anchors shown at the top and tension anchors at the bottom
Testing
In shear
The Solution
The proposed solution involved three CINTEC anchor types. The central one was a compression anchor of stainless steel comprising a 32mm shell rebar inside a 114x6.3 CHS installed in a 200mm hole, 8000mm deep, at an
angle of 30 degrees to the horizontal. Below it was a tension anchor, comprising a solid stainless steel body, 12m x 25mm installed in a 50mm drilled hole, and attached to the gantry support to prevent any rotation.
In Tension
Two smaller shear anchors 20mm x 800mm were similarly installed to complete the support. Load tests were carried out, with the placing of a 20m steel beam in position.
As a result of the use of a CINTEC installation, disruption was reduced from 6 weeks to 2 days together with a 50% saving on the original budget Railtrack had allocated to the project.
