腐木淤泥混合土层的次固结变形特性试验研究  

Testing Research on Secondary Consolidation Deformation Characteristics of Decayed Wo od Mixed Silt Soil

作　　者：曾玉莹 郑小战 陈小云 

机构地区：[1]广州市地质调查院,广东广州510440

出　　处：《资源环境与工程》2010年第3期268-270,共3页Resources Environment & Engineering

摘　　要：腐木淤泥混合土层是一类特殊软土层,对腐木工程进行次固结特性研究,能有效地控制工后沉降。通过采用自行加工的大直径固结仪进行了一系列的次固结试验,得到了其次固结系数为0.015 6-0.025 2,超载后的次固结系数为0.001 43-0.009 16,次固结系数与压缩指数之比的范围是0.014 4-0.023 3,为今后类似特殊软土地基设计与施工提供参考。Decayed wood mixed silt soil is a special kind of soft soil.Through a series of secondary consolidation tests conducted by the self-artifactitious large diameter consolidometer,the authors obtain the range of secondary consolidation coefficient from 0.015 6 to 0.025 2,secondary consolidation coefficient after overload from 0.001 43 to 0.009 16,the ratio of secondary consolidation to compression index from 0.014 4 to 0.023 3.It provides reference for the design and construction of similar soft soil foundation.

关 键 词：腐木淤泥混合土 次固结试验 固结特性参数 

分 类 号：TU411.5[建筑科学—岩土工程]