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Smart integral bridge design

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If you have a question about this talk, please contact Callum White.

The integral bridge typology has become the first choice for road bridges in the U.K. Without any joints between the bridge deck and abutments, maintenance needs are considerably lower than those for a conventional structure with bearings and expansion joints. However, the use of integral bridges is currently restricted to moderate span lengths and skews due to concern for soil settlement and high earth pressures developing in the backfill soil from thermal movements of the bridge deck. The current design code PD 6694 -1 is considered by many to be overly conservative and is thought to mischaracterise the soil-structure interaction behaviour at play. In this talk, the experimental and field work carried out at Cambridge and the University of Pretoria will be presented, giving insight into where current design could be improved.

This talk is part of the Engineering Department Structures Research Seminars series.

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