Bearing behaviour of embedded piles due to cyclic and dynamic lateral head loads

摘要

In the present paper some recent results about investigations in soil-pile head interaction arernreported.Vertical piles carry off lateral loads at the pile head towards the surrounding soil by means of horizontalrnbedding stresses, for instance in offshore piling (cyclic loading with low frequency due to wave excitation) orrncantilevers of noise load reductionwalls as to highspeed railway tracks (dynamic loading due to higher frequenciesrnof wind shock waves). In this process the pile’s bearing performance is determined by the pile-soil-interaction. Inrnpractice, the pile-soil-interaction is commonly disregarded or represented in extremely simplified forms, whichrncan lead to uneconomic or even defective design.rnThe main focus in this investigation is the development and redistribution of reaction stresses along the pileaxisrndue to the imposed head displacement of the pile respectively the number of loading cycles or the frequencyrnof dynamic loading/reloading.