论文类型：期刊论文

第一作者：Kong, Gangqiang

通讯作者：Kong, GQ (reprint author), Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Jiangsu, Peoples R China.

合写作者：Zhou, Yang,Yang, Qing

发表时间：2016-09-01

发表刊物：KSCE JOURNAL OF CIVIL ENGINEERING

收录刊物：SCIE、EI、Scopus

文献类型：J

卷号：20

期号：6

页面范围：2208-2220

ISSN号：1226-7988

关键字：pile group; dragload; group effect; consolidating soil; neutral plane

摘要：In this paper, model tests and numerical simulations on 3 x 3 pile group embedded in consolidating soil under embankment load with different pile spacings are carried out. Single pile and 2 x 2 pile group are studied for comparative analyses. The performances of dragload versus relative displacement of pile-soil, load sequence and load rate, and the group effects of dragload and downdrag versus pile spacing are analyzed. A case study on dragload of a pile group considering with or without couple effect is also presented. It is worth pointing out that in this experimental condition, when pile-soil relative displacements reach 2 mm, dragload will reaches nearly 75-95% of the maximum values; When consolidation time reaches 240 h, the neutral plane becomes stable approximately at 0.95H (H is the thickness of compression soil). The dragload and downdrag are influenced by load sequence of pile head load versus surcharge load.

是否译文：否