摘要
研究了堆载预压法加固软土地基的过程中地下水浸没作用对预压荷载的减小情况，给出了深圳蛇口地区堆栽预压加固地基过程中荷载的变化规律，利用大、小应变条件下的固结沉降计算公式对几种工况下的计算结果进行了对比分析。结果说明，考虑地下水浸没作用对地基固结沉降的影响随荷载和土压缩性以及土层厚度的增加而增大。通过与传统计算方法的比较，表明进行大变形分析时预压荷载的变化对最终沉降量有显著影响。
Firstly, the reducing of additional stress due to groundwater submergence was studied, and the change law of preloading in Shekou area was obtained. Next, the calculation results for several eases using the settlement formula of small-strain and large-strain consolidation theories were compared and analyzed. It is shown that the influence of submerge on consolidation settlement of ground increases with load, soil compressibility and thickness of soil; and the effect of preload change associated with large-strain analysis on settlement is significant compared to using traditional calculation methods.
出处
《后勤工程学院学报》
2007年第4期34-38,共5页
Journal of Logistical Engineering University
关键词
地下水浸没
预压荷载变化规律
沉降
大应变
groundwater submergence
change law of preloading
settlement
large-strain
