Influence of Soil-Base Slab Dynamic Interaction on Seismic Response of Pile Foundation Bridges in Sandy Soil Site
Soil-pile dynamic interaction is an important issue in the seismic response analysis of pile foundation bridges.For a bridge with the low-pile base slab foundation,the base slab is buried below the earth surface,and there is also dynamic interaction between soil and base slab.At present,the influence of soil-base slab dynamic interaction is generally not considered in seismic response analysis,and is rarely studied in the literature.Therefore,based on the p-y curve method,a soil-structure integrated pile foundation single-pier model is established by using OpenSees finite element analytical procedure.40 actual rock site seismograms are selected as input to carry out the seismic response analysis of pile-supported bridge considering the soil-base slab dynamic interaction.The results show that the basic period of structure will decrease after considering the soil-base slab dynamic interaction,and the curvature of pier-bottom section will obviously increase and the curvature of pile-head section will greatly decrease,but decrease of displacement at the pier top can be neglected.
bridgefoundation of group pileseismic responsesoil-structure integrated modelsoil-base slab dynamic interaction
NETL
NSTL
万方数据
维普
