[关键词]
[摘要]
正确度量相同地质单元土性指标之间的相关性,有助于解决实际工程中的小样本问题。利用深圳某吹填场地软基海相淤泥的物理性质和力学性质指标,采用线性回归方法,分析了吹填淤泥和原状淤泥的各种力学性质、物理性质指标的相关性,并建立了相关关系回归方程。研究表明,根据吹填淤泥土性指标经验回归方程,利用塑限或液限的一个指标和另一个土性指标就可以估算出吹填淤泥的其它土性指标;而根据原状淤泥力学性质指标与物理性质指标之间的经验回归方程,也可以估算出吹填淤泥一些较难通过试验确定的力学指标。研究结果对于海相淤泥软基处理工程土性指标选取具有重要的应用价值。
[Key word]
[Abstract]
Knowledge of the correlation between soil property indexes for the same geological unit soil can solve the small sample problems in practical projects. Based on the collected data of physical and mechanical property indexes of marine silt in the reclamation land projects in Shenzhen, correlation of physical properties indexes, mechanical properties indexes of dredged fill linear regression method was used to analyze the correlation between each physical and mechanical property index of dredged silt and undisturbed silt, and to establish the corresponding regression equations. The results showed that other soil property indexes of dredged silt can be estimated accurately using the empirical regression equation based on two known parameter indexes, including one of liquid limit or plastic limit and one of other soil property index. Mechanical property indexes of dredged silt can be estimated accurately using the empirical regression equations between physical property and mechanical property indexes of undisturbed silt. The results have important application values for the reasonable selection of soil property indexes in the treatment engineering of marine silt foundation.
[中图分类号]
[基金项目]
2012年度河南省政府决策研究招标项目(2012B609)