江苏省科技期刊可视化阅读平台

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江苏科技信息 ›› 2016, Vol. 33 ›› Issue (2): 65-66.doi: 10.3969/j.issn.1004-7530.2016.02.030

• 论文 • 上一篇    下一篇

土的先期固结压力与超固结比研究

夏謇, 陈小萍, 邬江   

  1. 江苏省水文地质海洋地质勘察院,江苏淮安,223005
  • 出版日期:2016-01-15 发布日期:2016-01-15

Study on Soil Preconsolidation Pressure and Over-consolidation Ratio

Xia Jian, Chen Xiaoping, Wu Jiang   

  • Online:2016-01-15 Published:2016-01-15

摘要： 超固结比OCR是工程地质中用于评价土体固结类型的一个指标，通过计算土自重应力P0和先期固结压力试验中得到先期固结压力Pc 2个参数计算求得。文章通过对这2个参数的可靠性进行分析，认为：鉴于自重土应力的计算模型尚不够完善，以及先期固结压力试验的误差，导致超固结比计算结果的不准确，容易造成固结类型的误判。

关键词: 先期固结压力, 自重土应力, 有效自重土应力, 超固结比

Abstract: The over-consolidation ratio (OCR) is an indicator used to evaluate the soil consolidation type in engineering geology, which is calculated from gravity stress P0 and soil preconsolidation pressure Pc gained from the test. Through the analysis of the reliability of these two parameters above, given the gravity of soil stress calculation model is still not perfect, and the error of the preconsolidation pressure test leading to inaccurate results of the calculation of over-consolidation ratio, the paper concludes it is easy to cause miscalculation of consolidation types.