Influence of concrete vibration creep on pile settlements of raft-pile foundation
Problem statement. The aim of this work is to study the additional precipitation of slab-pile foundation under cyclic loading due to the compression of the reinforced concrete piles taking into account the redistribution of efforts between the reinforcement, concrete, piles and the surrounding soil. There are no research results on this issue in the literature. Results. Carried out theoretical studies, considered the redistribution of efforts between the main elements of the slab-pile foundation. Considered the change in the stress-strain state of a compressed reinforced concrete element due to the manifestation of deformations of the vibro-creep of concrete and reinforcement in coherent conditions. Based on the research, the equation of changes in stresses and constrained deformations of concrete and reinforced concrete pile reinforcement under cyclic loading is proposed to develop the method for calculating the settlement of a slab-pile foundation. Conclusions. The significance of the results obtained for the construction industry is that for the first time the proposed method allows us to estimate the settlements of the slab-pile foundation due to compression of the pile under cyclic loading. It is a significant contribution to the theory of pile foundations calculation and provides concrete savings of up to 15 % compared to the standard method.