摘要
本文用基于Biot固结理论和邓肯-张模型的有限元法,对土工格栅碎石桩复合地基进行分析.结合室内试验阐明了细孔土工网改善碎石桩渗透性的有效性.根据计算结果与试验路实测数据的对比,以及桩间距对软基沉降的影响,论证了布桩方案的合理性.同时简要地说明土工格栅提高碎石桩承载力的加固作用.
The analysis of improved ground with geogrid-stone columns by FEM based on Biot'sconsolidation theory and Duncan-Chang's model is presented in this paper. The effectivenessof needle-punched geonets in improving the filtrating fuction of stone columns is elucidatedcombining with the results of interior test. According to the comparison between the results of calculation and measurement, and the influence of column spacing on the settlement of soft clay, the rationality of columns arrangement scheme is expounded and proved. Besides, the reinforcing function of geotextile in columns is also discussed.
出处
《土木工程学报》
EI
CSCD
北大核心
1998年第1期20-25,共6页
China Civil Engineering Journal
基金
国家自然科学基金资助项目
