The influence of pile groups configuration on its stability in dry sand under lateral loads

[摘要] This paper aims to investigate the effect of the arrangement of aluminum pipe piles closed from both ends on its response under lateral loads in terms of a lateral load and bending moment. Twenty - four model tests for laterally loaded aluminum pipe piles were investigated to study the effect of sand relative density, the ratio (S/D=3, 4 and 5) of spacing between pile in the group(s) / diameter of aluminum pipe pile (D), loading direction or piles configuration. It was found that the lateral resistance of the pipe piles loaded with a configuration of 2 1 is higher than that loaded in the direction of the configuration 1 2. Relative sand density has a significant effect on the lateral capacity of the pile group. The increase of the relative density caused increase load resistance but the bending moment increased. The effect of (S/D) is very obviously on the behavior of bending moment and the load resistance of piles models, bending moment increased as S/d increased as well as for load resistance.

[发布机构] Building and Construction Engineering Department, University of Technology, Baghdad, Iraq^1

[关键词] Lateral capacity;Lateral loads;Lateral resistance;Load resistances;Loading direction;Model tests;Pile groups;Relative density