西安理工大学学报2016，Vol.32Issue(3)：259-264,313,7.DOI:10.19322/j.cnki.issn.1006-4710.2016.03.002
多段扩大头锚杆在砂土中的模型试验研究
Research on model test of multiple underreamed anchors in sands
摘要
Abstract
The physical dimension of multiple underreamed anchors is essentially important for the ultimate bearing capacity of multiple underreamed anchors.In order to research the size effect on bearing behavior of multiple underreamed anchors in sands,a series of pull-out tests are per-formed by changing diameter and length based on the laboratory model tests with the typical load-displacement curves obtained.Test results show that the diameter of the expanded part has more influence on the bearing behavior,and that the length of the expanded part has less.With the in-creasing diameter of the underreamed anchors,the increscent range of ultimate bearing capacity of the anchor gradually reduced.By a contrastive analysis with bottomed underreamed anchors,it is indicated that the ultimate bearing capacity of multiple underreamed anchors is 1.2~1.3 times that of the bottomed underreamed anchors at the same total length.关键词
多段扩大头锚杆/模型试验/承载特性/极限承载力/砂土Key words
multiple underreamed anchors/model test/bearing behavior/ultimate bearing capaci-ty/sand分类
建筑与水利引用本文复制引用
李哲,李滨,高磊,张建山..多段扩大头锚杆在砂土中的模型试验研究[J].西安理工大学学报,2016,32(3):259-264,313,7.基金项目
陕西省科技统筹创新工程计划重大科技成果转化引导专项资助项目（2014KTCG02-04）；陕西省自然科学基金资助项目 （）
