摘要
载体桩技术通过将建筑垃圾置入混凝土桩桩底并夯实,挤密桩端土体而达到提高单桩的承载力。研究了载体桩技术的受力机理,提出了采用等效扩展基础的承载力计算方法。从桩的构成、施工工艺、控制指标、受力原理及施工影响范围等方面对载体桩和夯扩桩进行区别。通过改变载体桩桩身和载体的尺寸进而改变载体桩单桩的承载力,或将载体桩施工成复合地基中增强体,进一步扩大载体桩技术的应用范围。
Through embedding the construction garbage into the bottom of concrete pile and compacting the soil under the pile end,the bearing capacity of carrier pile is improved.In this paper,the load-bearing mechanism of carrier pile technology is studied and the way that the bearing capacity of carrier pile is calculated as equivalent spread footing was put forward.From the composition,construction process,control index,load-bearing mechanism and effect range,carrier pile and rammer pile were compared to distinguish these two kinds.Through changing the size of pile body and bearing carrier to adjust the capacity of carrier pile or reinforcing composite foundation with carrier pile,the field of application was widened.
出处
《路基工程》
2011年第3期68-71,共4页
Subgrade Engineering
基金
北京波森特岩土工程有限公司科研项目:建筑垃圾在建筑地基基础中的再生利用(2006BAJ02B05-03)
关键词
承载力机理
轴力
扩底桩
夯扩桩
载体桩
承载力
bearing load mechanism
axial force
pedestal pile
rammed pile
carrier pile
bearing capacity.
