泥炭土的概念模型和一维固结理论分析
发布时间：2018-07-27 15:46
【摘要】：泥炭土物理组成成分复杂,是一类富含有机质的特殊软土。有机质的存在使泥炭土的固相具有不可忽略的压缩性。泥炭土中的有机质易产生生物气,气相在扩散运移过程中会以封闭气泡的形式贮存于泥炭土中。考虑到泥炭土的自然特性,对泥炭土的三相组成进行了描述,提出了泥炭土的概念模型和假设。以此概念模型和假设为基础,发展了泥炭土的一维固结理论,固结模型考虑了泥炭土固相压缩性和封闭气泡压缩性。结合不同有机质含量泥炭土室内固结试验结果,选取合理的模型参数,采用该固结模型进行了编程计算,计算结果与试验结果相一致,验证了固结模型的合理性。
[Abstract]:The physical composition of peat soil is complex and it is a special soft soil rich in organic matter. The existence of organic matter makes the solid phase of peat soil have the compressibility which can not be ignored. Organic matter in peat is easy to produce biogas, and gas phase will be stored in peat in the form of closed bubble during diffusion and migration. Considering the natural characteristics of the peat soil, the three-phase composition of the peat soil is described, and the conceptual model and hypothesis of the peat soil are put forward. Based on the conceptual model and hypothesis, the one-dimensional consolidation theory of peat is developed. The consolidation model considers the compressibility of solid phase and the compressibility of closed bubble. Combined with the results of indoor consolidation test of peat soils with different organic matter content, reasonable model parameters were selected, and the consolidation model was used for programming calculation. The calculated results were in agreement with the experimental results, and the rationality of the consolidation model was verified.
【作者单位】： 同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;
【分类号】：TU447
，
本文编号：2148313
[Abstract]:The physical composition of peat soil is complex and it is a special soft soil rich in organic matter. The existence of organic matter makes the solid phase of peat soil have the compressibility which can not be ignored. Organic matter in peat is easy to produce biogas, and gas phase will be stored in peat in the form of closed bubble during diffusion and migration. Considering the natural characteristics of the peat soil, the three-phase composition of the peat soil is described, and the conceptual model and hypothesis of the peat soil are put forward. Based on the conceptual model and hypothesis, the one-dimensional consolidation theory of peat is developed. The consolidation model considers the compressibility of solid phase and the compressibility of closed bubble. Combined with the results of indoor consolidation test of peat soils with different organic matter content, reasonable model parameters were selected, and the consolidation model was used for programming calculation. The calculated results were in agreement with the experimental results, and the rationality of the consolidation model was verified.
【作者单位】： 同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;
【分类号】：TU447
，
本文编号：2148313
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