铁道科学与工程学报2017，Vol.14Issue(7)：1420-1427,8.
不同特征滤膜真空预压处理吹填土的模型试验研究
Model test of dredger fill of treatment using vacuum preloading method base on different equivalent opening size
摘要
Abstract
Geotextile has been widely used in the vacuum consolidation, which is one of the ground improvement methods. The opening size in the geotextile not only affects the flow of water but also the soil particle migration, which is associated with the effect of vacuum consolation indirectly. In this paper the effect of geotextile on vacuum consolidation was studied under the vacuum loading in views of macro and micro analyses. Laboratory model tests of the vacuum consolidation were performed with three different opening sizes of the geotextile. The changes with the position of measured points in water content, coefficient of permeability, composition of soil grain and geometric parameter of micro-structure of soil around the prefabricated vertical drain (PVD) were investigated after the tests. The relationship between the equivalent opening size and influencing effect of vacuum consolidation was discussed by means of the distribution of the above parameters around PVD. The qualitative relationship among the equivalent opening size, clogging and effect of consolidation was explained from the view of the soil particle migration, which results in a base in the further theoretical study of quantitative relationship among the vacuum loading, size of soil particle and equivalent opening size of geotextile.关键词
真空预压/模型试验/等效孔径/吹填土Key words
vacuum preloading/model test/equivalent opening size/dredger fill分类
交通工程引用本文复制引用
罗斌,雷金山,唐晶..不同特征滤膜真空预压处理吹填土的模型试验研究[J].铁道科学与工程学报,2017,14(7):1420-1427,8.基金项目
国家自然科学基金资助项目(50678175) （50678175）
湖南省自然科学基金资助项目(2017JJ2316) （2017JJ2316）
