The behavior of one-row pile groups subjected to lateral soil movements was investigated by an analytical study and model tests. The emphasis was on quantifying the bending moment distribution of the pile embedded in deposited weathered soil due to gr...
The behavior of one-row pile groups subjected to lateral soil movements was investigated by an analytical study and model tests. The emphasis was on quantifying the bending moment distribution of the pile embedded in deposited weathered soil due to group effect. The response of groups was analyzed by developing interaction factors obtained from laboratory model tests and a three-dimensional nonlinear finite element study. An analytical method based on load-transfer approach was developed for different cap rigidity and spacing-to-diameter ratio varying from 2.5 to 7.0. Based on the analysis, it is shown that the interaction factor of the pile in a group is increased as a pile spacing increases in order of free-, hinged- and unrotated head condition. Through the comparative study, it is found that prediction by present approach is in good agreement with general trend observed by centrifuge tests, full-scale tests and published case histories.