工程地质学报2026，Vol.34Issue(2)：817-826,10.DOI:10.13544/j.cnki.jeg.2023-0409
深厚软土路基就地固化后快速填筑原位试验
FIELD TEST FOR STABILIZATION OF DEEP SOFT FOUNDATION UNDER RAPID FILLING CONDITION
摘要
Abstract
In-situ stabilization of shallow silt layers can form an artificial hard crust,effectively improving strength and reducing engineering issues during construction and service.Based on a field test in the Chaoshan area of Guangdong,this study evaluated the treatment effect of a 6 m in-situ stabilized layer under rapid post-stabilization filling.A numerical model was established to investigate the influence of stabilization thickness,elastic modulus,and loading on the treatment performance.Field observations indicated that the 6 m stabilization effectively reduced compression of the soft layer and controlled horizontal and uplift displacements induced by the fill load.Numerical simulations further showed that settlement decreases nonlinearly with increasing stabilization thickness and modulus.The magnitude of the applied load dominated both settlement and excess pore-water pressure in the foundation.It was also found that both elastic modulus and stabilization thickness affect settlement of the in-situ stabilized foundation,but settlement sensitivity to thickness differs markedly from that to modulus.With greater stabilization thickness,settlement becomes more sensitive to changes in modulus.Additionally,stabilization thickness has a more pronounced impact on settlement than elastic modulus.Elastic modulus is linearly related to cement content:cement-silt stabilized soil with moduli of 10 MPa,20 MPa,40 MPa,and 60 MPa corresponds to cement contents of 4％～5％,6％～7％,9％～10％,and 11％～12％,respectively.Numerical analysis suggests that for this case the most economical elastic modulus is 28 MPa(corresponding to a cement content of about 8％)and the most economical stabilization thickness is 3.2 m.关键词
就地固化/快速堆载/现场试验/数值模拟/压缩变形/固化厚度Key words
In-situ stabilization/Rapid loading/Field test/Numerical simulation/Compression deformation/Stabilization thickness分类
建筑与水利引用本文复制引用
周洋,刘大虎,李国维,贺冠军..深厚软土路基就地固化后快速填筑原位试验[J].工程地质学报,2026,34(2):817-826,10.基金项目
国家自然科学基金项目(资助号:42177126),河南工业大学青年骨干教师项目(资助号:21420194),郑州市R&D专项经费补助科研项目(资助号:22ZZRDZX38).This research is supported by the National Natural Science Foundation of China(Grant No.42177126),Henan University of Technology Young Backbone Teachers Project(Grant No.21420194)and Zhengzhou City R&D Special Funds Subsidized Scientific Research Projects(Grant No.22ZZRDZX38). （资助号:42177126）
