珊瑚砂在单调和循环荷载作用下的抗剪强度特性

IF 2.5 3区 工程技术 Q2 ENGINEERING, CIVIL Geomechanics and Engineering Pub Date : 2021-01-01 DOI:10.12989/GAE.2021.25.2.089
A. Vu
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引用次数: 0

摘要

本文对越南珊瑚砂土在单调和循环荷载作用下的强度特性进行了试验研究。进行了一系列的直剪试验,研究了相对密度、循环荷载、循环荷载幅值和加载速率等因素对砂体抗剪强度的影响。研究结果表明,珊瑚砾石砂的抗剪强度参数不仅包括内摩擦角,还包括表观黏聚力。这些参数随相对密度、循环荷载、循环荷载幅值和加载速率的变化而变化。抗剪强度随相对密度的增大而增大。受循环荷载作用后,抗剪强度增大。循环荷载幅值影响珊瑚砂抗剪强度,随着循环荷载幅值的增大,珊瑚砂抗剪强度增大。加载速率对珊瑚砂抗剪强度的影响不显著。
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Shear strength behaviour of coral gravelly sand subjected to monotonic and cyclic loading
The paper presents an experimental study on the strength behaviour of a coral gravelly sand from Vietnam subjected to monotonic and cyclic loading. A series of direct shear tests were carried out to investigate the shear strength behaviour and the factors affecting the shear strength of the sand such as relative density, cyclic load, amplitude of the cyclic load and loading rate. The study results indicate that the shear strength parameters of the coral gravelly sand include not only internal friction angle but also apparent cohesion. These parameters vary with the relative density, cyclic load, the amplitude of the cyclic load and loading rate. The shear strength increases with the increase of the relative density. The shear strength increases after subjecting to cyclic loading. The amplitude of the cyclic load affects the shear strength of coral gravelly sand, the shear strength increases as the amplitude of the cyclic load increases. The loading rate has insignificantly effect on the shear strength of the coral gravelly sand.
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来源期刊
Geomechanics and Engineering
Geomechanics and Engineering ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL
CiteScore
5.20
自引率
25.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Geomechanics and Engineering aims at opening an easy access to the valuable source of information and providing an excellent publication channel for the global community of researchers in the geomechanics and its applications. Typical subjects covered by the journal include: - Analytical, computational, and experimental multiscale and interaction mechanics- Computational and Theoretical Geomechnics- Foundations- Tunneling- Earth Structures- Site Characterization- Soil-Structure Interactions
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