Model test on vertical bearing capacity of X-section concrete pile raft foundation in silica sand

摘要: To reveal the bearing capacity of X-section concrete piles pile raft foundation in silica sand, a series vertical load tests are carried out. The compared with circular section same area. load-settlement curves, axial force and skin friction, strain on concave convex edge pile, pile-sand stress ratio, distributions side tip resistance presented. results show that X is much larger than foundation. Besides, peak under deeper smaller while neutral point deeper. Moreover, has more potential as increases. higher ratios load-sharing between resistance. Above all, can significantly increase pile-raft foundations sand.