陡坡上土工合成衬砌系统应变和载荷计算的解析和数值模型

IF 3 3区 工程技术 Q2 ENGINEERING, GEOLOGICAL
Yan Yu, R. K. Rowe
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引用次数: 0

摘要

本文建立了一种基于应力平衡的分析模型,用于设计克服垃圾沉降下拉荷载的陡坡土工合成衬砌系统。该分析模型计算了高强度/刚度土工布(HS-GTX)在GMB上加固所需的拉伸刚度,以限制边坡上HS-GTX的最大拉伸应变为5%,GMB的最大应变为4%。数值模型说明了在陡峭的垃圾填埋场斜坡上降低单个GMB衬垫的GMB拉伸应变的必要性,并证实了在GMB上使用HS-GTX能够将HS-GTX和GMB的最大拉伸应变限制在可接受的应变水平。本文所建立的分析模型为初步设计HS-GTX和GMB在陡坡土工合成衬里系统的极限拉伸应变提供了实用工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analytical and Numerical Models for Strain and Load Calculations for Geosynthetic Liner Systems on Steep Slopes
The paper develops an analytical model based on the stress equilibrium for the design of steep slope geosynthetic liner systems to overcome downdrag loads from waste settlement. This analytical model calculates the required tensile stiffness for a high strength/stiffness geotextile (HS-GTX) reinforcement over the GMB to limit the maximum HS-GTX tensile strain to 5% and the maximum GMB strain to 4% on the side slope. The numerical model illustrates the need for reducing the GMB tensile strains for a single GMB liner on a steep landfill slope and confirms that the use of a HS-GTX over the GMB is able to limit the maximum HS-GTX and GMB tensile strains to the acceptable strain levels. The analytical model developed in this paper is a practical tool for preliminary design to limit tensile strains of the HS-GTX and GMB in a steep slope geosynthetic liner system.
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来源期刊
Canadian Geotechnical Journal
Canadian Geotechnical Journal 地学-地球科学综合
CiteScore
7.20
自引率
5.60%
发文量
163
审稿时长
7.5 months
期刊介绍: The Canadian Geotechnical Journal features articles, notes, reviews, and discussions related to new developments in geotechnical and geoenvironmental engineering, and applied sciences. The topics of papers written by researchers and engineers/scientists active in industry include soil and rock mechanics, material properties and fundamental behaviour, site characterization, foundations, excavations, tunnels, dams and embankments, slopes, landslides, geological and rock engineering, ground improvement, hydrogeology and contaminant hydrogeology, geochemistry, waste management, geosynthetics, offshore engineering, ice, frozen ground and northern engineering, risk and reliability applications, and physical and numerical modelling. Contributions that have practical relevance are preferred, including case records. Purely theoretical contributions are not generally published unless they are on a topic of special interest (like unsaturated soil mechanics or cold regions geotechnics) or they have direct practical value.
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