摘要
桩基是一种有效处理膨胀土的方法,膨胀土中桩基的工作性状会受到膨胀土浸水膨胀的影响。通过大型模型试验分析了浸水对膨胀土中单桩承载特性的影响,研究了浸水过程中单桩的上升和胀切力的变化规律。试验结果表明:由于膨胀土浸水软化作用,膨胀土中桩的侧摩阻力和承载力明显降低,而由于膨胀作用,桩中产生胀切力而使桩上升。
Piles are usually used to improve expansive soil. The behavior of piles in expansive soil will be influenced by the inundation swelling deformation of expansive soil. Large scale model tests were Carried out to study the influence of inundation swelling deformation on the bearing capacity of single pile in expansive soil. The heave and swelling shear force of single pile were studied during inundation. It was indicated that the shaft resistance and beating capacity of single pile would decrease and the heave and swelling shear force in piles would increase due to the inundation swelling deformation of expansive soil.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2008年第1期56-60,共5页
Chinese Journal of Geotechnical Engineering
基金
交通部西部交通建设科技资助项目(200231874616)
关键词
膨胀土
浸水
单桩
性状
模型试验
expansive soil
inundation
single pile
behaviour
model test
