摘要
腐木淤泥混合土是在广东省揭普高速公路修建过程中所发现的一种特殊软土,具有高含水率、高压缩性、低渗透性等特点。通过固结压缩试验、回弹试验、流变试验等室内试验,分析了腐木淤泥混合土的压缩、回弹及次固结变形特性,整理出腐木淤泥混合土的物理性质指标及压缩指标。同时结合工程实例得出,小间距袋装砂井+超载预压是处理腐木淤泥混合土地基的有效手段。研究结论可为以后的类似地基处理设计与施工提供重要依据。
Rotten Wood and Silt Mixed Soil（RWSMS） is an special kind of soft soil which has been found in the foundation of Jie-Pu Expressway of Guangdong Province.It has the characteristics of high water ratio,high compressibility and low permeability.The compression properties、springback properties and secondary consolidation deformation properties of RWSMS are analyzed by laboratory test and the index of physical property and comepression is got.It are concluded that small distance bag sand-well and overload prepressure are the effective method to treat RWSMS foundation by the engineering example.The conclusion provide the important evidence for the design and construction of similar foundation.
出处
《公路》
北大核心
2012年第5期90-94,共5页
Highway
关键词
腐木淤泥混合土
物理性质指标
压缩指标
袋装砂井
超载预压
rotten wood and silt mixed soil
physical property index
compression index
bag sand-well
overload prepressure
