Soil-Structure Interaction of Jointless Bridges

In the research project presented in this paper the main subjects of interest are: earth pressures after cyclic abutment displacements, behavior of pavement near the abutments and bridge construction details. The instrumentation of Haavistonjoki Bridge at Tampere-Jyvaskyla highway has been completed and is discussed in this paper. The results show, for example, that the behavior of large steel pipe piles under an integral abutment can be sufficiently predicted by structural calculations. The measured earth pressures on the bridge abutments were quite high because the backfill was well compacted.