路基工程Issue(2)：11-14,4.
水泥粉煤灰搅拌桩复合地基桩土应力比试验研究
Experimental Study on Pile-soil Stress Ratio of Composite Foundation for Fly-ash-cement Mixing Piles
摘要
Abstract
Depending on field monitoring results of pile-soil stress in test section of composite foundation for fly-ash-cement mixing piles, the variation tendency and the factors affecting pile-soil stress ratio under flexible load are discussed and then the foundation treatment schemes are evaluated and optimized. The result shows that during subgrade filling, generally, pile-soil stress ratio trends increasing as the pile stress and pile-soil stress under upper load increases; during subgrade consolidating and stabilizing, this ratio changes small; and under the action of flexible subgrade with the filling height not more than 5m, this ratio varies from 2. 18 to 2. 71, far less than the value of 3. 0 ~ 10. 0 measured with bearing capacity of single pile.关键词
复合地基/水泥粉煤灰搅拌桩/桩土应力比/饱和黄土/柔性荷载Key words
composite foundation/ fly-ash-cement mixing piles/ pile-soil stress ratio/ saturated loess/ flexible load分类
建筑与水利引用本文复制引用
鞠兴华,赵丽娅,杨晓华..水泥粉煤灰搅拌桩复合地基桩土应力比试验研究[J].路基工程,2013,(2):11-14,4.基金项目
交通部西部交通建设科研项目(2009310000003) （2009310000003）
