摘要
大直径人工挖孔扩底桩在高层建筑中已被广泛应用,但当桩端为强风化岩时,再在桩端扩大头,存在诸多弊端。基于变截面桩的受力机理和试验资料分析,提出了采用变截面人工挖孔桩的方案,相比于传统的桩端扩底挖孔桩,变截面挖孔桩具有施工安全、质量可靠、经济合理的优点。
Large diameter manually excavated pile has been widely applied in high rise buildings, but when the pile end is of strong weathered rock, the expanded head of the pile base has many defects. Based on the stress mecha- nism of the variable section pile and test data analysis, the scheme of variable section manually excavated pile was proposed, compared with the traditional manually excavated pile with expanded tip base, the variable section manually excavated pile has such advantages as safety construction, reliable quality and reasonable economy.
出处
《工程建设》
2016年第2期20-24,共5页
Engineering Construction
关键词
人工挖孔桩
变截面
桩端
强风化岩
设计
manually excavated pile
variable section
pile end
strong weathered rock
design
