Abstract
Modern offshore jacket structures are designed with piles that are carrying large shear forces and bending moments. Even if the geometry of the grouted connection is quite simple the load transfer mechanism is complex. It involves friction, contact stresses, brittle material, abrasion, cyclic degradation etc. In order to improve our understanding of the behaviour and load-carrying capacity of grouted connections a laboratory test program involving 12 test specimens was executed. The specimens were full scale representation of a segment of a part of a pile sleeve connection close to the lower end. The tests are carefully planned to represent the real load and deformation conditions of the connection under cyclic loads. Two design geometries “Retracted” and “Extended” were tested. Four of the tests included reinforcement bars. The effect of the grout seal keeper plate was also investigated.The load-carrying capacity under cyclic loading was found. There were significant differences in the behaviour of the two different geometries.
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