【摘要】：泥炭土物理組成成分復(fù)雜,是一類富含有機質(zhì)的特殊軟土。有機質(zhì)的存在使泥炭土的固相具有不可忽略的壓縮性。泥炭土中的有機質(zhì)易產(chǎn)生生物氣,氣相在擴散運移過程中會以封閉氣泡的形式貯存于泥炭土中�？紤]到泥炭土的自然特性,對泥炭土的三相組成進行了描述,提出了泥炭土的概念模型和假設(shè)。以此概念模型和假設(shè)為基礎(chǔ),發(fā)展了泥炭土的一維固結(jié)理論,固結(jié)模型考慮了泥炭土固相壓縮性和封閉氣泡壓縮性。結(jié)合不同有機質(zhì)含量泥炭土室內(nèi)固結(jié)試驗結(jié)果,選取合理的模型參數(shù),采用該固結(jié)模型進行了編程計算,計算結(jié)果與試驗結(jié)果相一致,驗證了固結(jié)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.
【作者單位】： 同濟大學(xué)地下建筑與工程系;同濟大學(xué)巖土及地下工程教育部重點實驗室;
【分類號】：TU447
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本文編號：2148313