岩土力学2012，Vol.33Issue(5)：1467-1472,1478,7.
劈裂真空法加固软土地基的效果分析
Effect analysis of a soft ground reinforced by a combined vacuum preloading and pneumatic fracturing method
摘要
Abstract
To overcome the problems of traditional vacuum preloading method, vacuum preloading and pneumatic fracturing are combined to reinforce the performance of ground improvement. The mechanism and construction procedures of the combined method are introduced firstly. The reinforcement effect of the combined method is validated through a pilot highway embankment on soft clay in Jiangsu, China. Comparing to the traditional vacuum preloading method, the combined vacuum preloading and pneumatic fracturing method would enhance the transfer efficiency of vacuum into deep soil layers and accelerate the dissipation of excess pore water pressure. Therefore, the strength increase of soft soil layers improved by the combined method is much larger than that of ground reinforced by the traditional vacuum preloading method. The combined method also can reduce the construction period than the traditional vacuum preloading method. The test results of cone penetration tests and engineering properties tests of soft soils also indicate the superior of the combined vacuum preloading and pneumatic fracturing method.关键词
劈裂真空法/软土/现场监测/加固效果Key words
combined vacuum preloading and pneumatic fracturing method/ soft soil/ field monitoring/ reinforcement effect分类
建筑与水利引用本文复制引用
章定文,韩文君,刘松玉,杜广印..劈裂真空法加固软土地基的效果分析[J].岩土力学,2012,33(5):1467-1472,1478,7.基金项目
国家自然科学基金资助项目(No.50808046,No.51078083) （No.50808046,No.51078083）
江苏省交通科技项目(No.08Y34). （No.08Y34）
