摘要
针对土体固结系数的变化进行了理论分析,并通过现场试验发现固结系数在土体固结过程中变化很大,使得某一时刻土体的实际沉降量远大于设计值。同时,取现场原状土进行室内试验,测定土体的固结系数,研究固结系数与固结应力的关系。结果表明,对于海域中的超软土,土体固结系数随固结应力的增加而增加,达到某一峰值后开始迅速减小,最终趋于稳定。
The theory analysis on the change of consolidation coefficient of soil was carried, and through the field test, we found that the value of consolidation coefficient changed largely, which led the actual settlement at one point is much large than the design value. Besides, the value of consolidation coefficient was got through the indoor experiment by using original soil, and the relationship between consolidation coefficient and consolidation stress was analyzed. The results show that, the consolidation coefficient of the soft soil in sea area increases in the beginning when the stress increases, then the consolidation coefficient comes to a peak value, after that, it decreases very quickly, and finally tends to a stable value.
出处
《中国港湾建设》
2014年第7期23-26,33,共5页
China Harbour Engineering
基金
浙江省交通运输厅科技计划项目(2013H05)
水利部公益性行业科研专项经费项目(201201015)
关键词
竖向排水体
固结系数
固结规律
vertical drains
consolidation coefficient
consolidation behavior