摘要
本工程的人工挖孔桩在挖孔过程中遇到含泥质砾砂层发生流砂而无法施工．作者提出用高压注浆法旋喷加固含泥质砾砂层和粘土层，形成直径1．6～1．8m、高度6～8m的圆柱形复合土体作为桩端持力层，符合单桩承载力设计要求．
There is muddy gravel sand when excavating the man-digged filling piles. It is difficult to construct because of drift sand. We used grout jetting under high pressure to reinforce the muddy gravel sand and clay, and formed cylindrical reinforced soil with 1.6-1.8 meters diameter and 6-8 meters height as forced layer at the end of the pile. The results accord with the demands of design.
出处
《南方冶金学院学报》
1999年第2期74-77,共4页
Journal of Southern Institute of Metallurgy
关键词
人工挖孔桩
桩端持力层
复合土体
桩基
man-digged filling pile, forced layer at the end of the pile, reforced soil
