岩土工程学报Issue(11)：2018-2024,7.DOI:10.11779/CJGE201411007
水平偏心荷载下斜桩群桩受力性状的离心机模型试验
Centrifugal model tests on batter pile groups under eccentric lateral loads
摘要
Abstract
A series of centrifugal model tests are conducted to investigate the behavior of pile groups in sand subjected to eccentric lateral loads, especially the role of batter pile groups in resisting lateral or eccentric loads. The preparation and the procedure of the tests are described. The test results reveal that the eccentric distance of the lateral loads will affect the lateral response of the pile groups to some extent within the experimental range, but have little effect on the torsional behavior of the pile groups. The bearing capacity of the plumb pile group under lateral loads with eccentric distance of 4.3D is higher than that of zero and 7.1D. The capacity of the batter pile groups subjected to lateral, eccentric or torsional loads is much higher than that of the plumb pile groups. Under the eccentric loads, the differences between the lateral displacements of individual piles within the batter pile groups are larger than those in the plumb pile groups, and they also increase with the eccentric distance of the lateral loads. The shear forces and lateral displacements at head of individual piles are different in direction. The axial forces of individual piles within the batter pile groups are dramatically larger than those in the plumb pile groups under the same load condition, which illustrates that batter pile groups can more effectively resist the lateral loads than the plumb pile groups by taking full advantages of the axial capacity of individual piles.关键词
群桩/斜桩/水平荷载/偏心荷载/离心机试验Key words
pile group/batter pile/lateral load/eccentric load/centrifugal model test分类
建筑与水利引用本文复制引用
顾明,陈仁朋,孔令刚,陈云敏,张浙杭..水平偏心荷载下斜桩群桩受力性状的离心机模型试验[J].岩土工程学报,2014,(11):2018-2024,7.基金项目
国家自然科学基金项目（51225804，U1234204）；浙江省电力公司科技项目 （）
