Affiliation:
1. Mageba SA, Bulach, Switzerland
2. B+S AG, Switzerland
Abstract
<p>Accumulated movements induced by temperature and imposed loads contribute to the wearing down of the
sliding materials within bridge bearings and expansion joints, potentially seriously affecting their functioning
and performance. Therefore, there is a need for engineers to be able to assess, with some accuracy, the total
movements to which these critical components, and their sliding materials in particular, are being subjected
(or have been subjected during their service life to date). These movements are difficult to calculate analytically
and design codes generally provide very conservative load models which increases the challenge of accurately
estimating true movements. Nowadays, structural health monitoring can be used to record these movements
with high accuracy, providing data that can support more efficient life-cycle planning of bridge maintenance.
This paper illustrates this with reference to the measurement of longitudinal movements on expansion joints
and bearings of various bridge structures.</p>
Publisher
International Association for Bridge and Structural Engineering (IABSE)
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