文章摘要
冯志刚,朱俊高.软土次固结变形特性试验研究[J].水利学报,2009,40(5):
软土次固结变形特性试验研究
Experimental study on secondary consolidation behavior of soft soils
  
DOI：
中文关键词: 软土  土工试验  次固结系数  固结压力  加荷比
英文关键词: soft soil  secondary consolidation  consolidation pressure  load ratio  secondary consolidation ratio
基金项目:
作者单位
冯志刚 1河海大学 岩土力学与堤坝工程教育部重点实验室，江苏 南京 210098；2广西电力工业勘察设计研究院，广西 南宁 530023 
朱俊高  
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中文摘要:
      在侧限高压固结仪上，对3种软土进行了不同固结压力、不同加荷比下的一维固结试验。试验结果表明：保持加荷比为1进行加荷时，次固结系数随固结压力的增大呈先增大后减小的趋势；加荷比定量，次固结系数较小；加荷比对主、次固结界限的划分有影响；次固结系数与压缩指数的比值，在减小加荷比加载时有所减小。在对试验数据进行分析的基础上，提出一个次固结系数与固结压力的函数关系，可由已知数据推求其他荷载下的次固结系数，并采用其他学者的试验结果对该函数关系进行了验证。
英文摘要:
      Based on a series of 1-D consolidation tests for three types of soft soils， the influence of consolidation pressure pand load ratio Δp/pon behavior of secondary consolidation was investigated. The results of tests show that under the condition of Δp/p=1，along with the increasing consolidation pressure p，the secondary consolidation ratio C increases to a peak value at first and then reduces gradually. The Δp/p has some effect on C. The difference of primary consolidation and secondary consolidation is related to Δp/p.The ratio of C to compression index Cc is affected by Δp/p in a certain degree. A functional relationship between C and pis proposed based on the test data, by which the secondary consolidation C of arbitrary loading step can be calculated. This relationship is verified by the test data of other researchers.
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