|
Date
|
25 FEBRUARY 2012
|
|
Time
|
08:15 - 11:00
|
|
Event Type
|
Seminar
|
The existing Forth Road Bridge spans the Firth of Forth in Scotland. The steel girders of the approach viaducts are supported on steel roller and rocker bearings. An initial study of the bearings identified that the rollers had locked up due to corrosion and distortion, and the concrete beneath the bearings and elsewhere on the pier tops had deteriorated due to chloride contamination. Assessment showed that structural deficiencies in the pier were exacerbated by both the concrete deterioration and change in articulation. These factors lead to the decision to replace all the bearings on the viaducts. The original structure was not designed to facilitate replacement of the bearings so the structure had to be strengthened and modified by the addition of jacking stiffeners and corbels to the pier tops.
This presentation outlines the design of the strengthening and modifications to the bridge to facilitate bearing replacement, together with a detailed description of the design of the temporary works needed to maintain the bridge’s articulation during jacking. Lessons learnt during construction will be discussed and the structural benefits of design to Eurocodes emphasised.
Speaker
David A. Smith, Regional Head of Bridge Engineering, ATKINS
Fee:
HK$70 for ICE-member
HK$132 for non-member
Please make cheque payable to "The Institution of Civil Engineers (HK) Ltd" and post to
ICE HK Office, Room 1606, 16/F, Dominion Centre, 43-59 Queen's Road East, Wanchai,
Hong Kong by 13 February 2012. Seat will be reserved upon the receipt of payment.
Disclaimer: Any views or opinions expressed on any matters by the presenters or participants during or in connection with this presentation are solely the views of the authors of the respective comments and/or opinions and must not be taken to be the views of ICE or any other organisation. ICE makes no representations, warranties or assurances concerning any information provided in these presentations and accepts no responsibility for the content and/or accuracy.