Engineering Characteristics of Unsaturated Cohesive Foundation Soil at High-Plateau Airport with Considering the Embankment Filling Interval

IF 1.4 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Polish Journal of Environmental Studies Pub Date : 2023-12-04 DOI:10.15244/pjoes/173992

Jun Feng, Yanjun Liu, Xiaomei Lu, Zikang Chen, Jian Wu, Jizhe He, Zhuoya Zhao

引用次数: 0

Abstract

Most of the foundation soil in airport engineering belongs to unsaturated soil. The subsidence law and stress change rule of unsaturated soil foundation in the filling phase of embankment were analyzed by the software of Midas/GTS. The one-dimensional consolidation theory of unsaturated soil and the Van Genuchten model of soil water characteristics were considered in the programs. The results showed the stress decreased with depth increased and they could be seen as two straight lines. The interval time in filling phase of unsaturated soil had little impact on the stress. The depth-settlement curves had big difference between the overall filling and layered filling that the settlement of layered filling was far greater than the overall filling. In the layered filling, the curves of depth-settlement were similar with different interval time that could be approximately separated into two phases and the largest settlement appeared on the surface of the ground.

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考虑路堤填筑间隔的高原机场非饱和粘性地基土的工程特性

机场工程地基土多为非饱和土。利用Midas/GTS软件分析了路基填筑阶段非饱和土地基的沉降规律和应力变化规律。程序考虑了非饱和土一维固结理论和土壤水分特征的Van Genuchten模型。结果表明，应力随深度的增加而减小，呈两条直线。非饱和土充填阶段的间隔时间对应力影响不大。整体充填与分层充填的深度沉降曲线差异较大，分层充填的沉降远大于整体充填。分层充填时，不同间隔时间的深度沉降曲线相似，可近似分为两个阶段，地表沉降最大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polish Journal of Environmental Studies 环境科学-环境科学

CiteScore

3.10

自引率

11.10%

发文量

430

审稿时长

4 months

期刊介绍： One of the most important challenges facing the contemporary scientific world are problems connected with environmental protection. Intensive development of industry and agriculture has led to a rise in living standards on one hand, but an increase in environmental degradation on the other. This degradation poses a direct threat to human health and life. Solving these ever-increasing problems which seriously endanger our civilization require the united efforts of scientists and field researchers of many branches. The "Polish Journal of Environmental Studies" publishes original papers and critical reviews on the following subjects: -Basic and applied environmental pollution research, including environmental engineering -Pollution control of atmospheric, water (marine and fresh), soil and biological materials -Determination of harmful substances, including their metabolic breakdown patterns -Analytical methods for metabolic breakdown patterns or other chemical degradation patterns in the environment and in biological samples -Development of new analytical methods, instruments and techniques for controlling pollutants -Circulation of pollutants in the environment and their effect on living organisms -Environmentally oriented catalysis -Hazards to human health and safety -Waste utilization and management -Land reclamation -Conference reports, scientific and technical reports and book reviews