粒料桩处置饱和黄土复合地基桩土应力比试验研究  

Experimental Study on Pile-Soil Stress Ratio of Saturated Loess Composite Foundation Treated by Granular Pile

作　　者：王攀[1] 张洁[1] 王文文 WANG Pan;ZHANG Jie;WANG Wenwen(CCCC First Highway Survey and Design Institute Co.,Ltd.,Xi'an 710068,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安710068

出　　处：《路基工程》2025年第2期96-101,共6页Subgrade Engineering

摘　　要：以某在建饱和黄土地区高速公路工程为依托,通过现场实测,分析计算粒料桩复合地基桩土应力比的变化规律。结果表明:桩土应力比的大小与桩间土的强度有关,桩间土的强度愈大,桩土应力比愈小;路堤填筑过程中应力分担比受填筑时间和填土速度的影响;用粒料桩复合地基对饱和黄土地区软弱土地基进行处治合理有效,建议桩土应力比采用1.80。Based on a highway project in saturated loess area under construction,the change rule of pile-soil stress ratio of granular pile composite foundation is analyzed and calculated through on-site measurement.The results show that:the size of pile-soil stress ratio is related to the strength of the soil between the piles,the greater the strength of the soil between the piles,the smaller the pile-soil stress ratio;embankment filling process stress sharing ratio is affected by the filling time and filling speed;granular pile composite foundation on saturated loess area soft ground treatment is reasonable and effective,it is recommended that the pile-soil stress ratio is 1.80.

关 键 词：饱和黄土 复合地基 现场试验 填土荷载 桩土应力比 数据分析 

分 类 号：U412[交通运输工程—道路与铁道工程]