Stress-strain behavior and liquefaction strength characteristics of Ottawa F65 sand
Stress-strain behavior and liquefaction strength characteristics of Ottawa F65 sand
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Ottawa F65砂的应力应变行为及液化强度特性
DOI：
10.1016/j.soildyn.2020.106292
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发表时间：
2020
影响因子：
4
通讯作者：
Manzari, Majid T.
中科院分区：
文献类型：
--
作者：
ElGhoraiby, Mohamed A.;Park, Hanna;Manzari, Majid T.
土的应力-应变-强度响应是岩土工程问题数值模拟中现实本构模型建立和标定的重要基础。本文介绍了在液化实验和分析项目（LEAP）过程中进行的渥太华F65砂沿着的各种单调和循环试验的广泛表征。这些测试中的样本使用细致的样品制备技术制备，以促进其一致性和可重复性。单调排水和不排水三轴试验揭示了稳态（临界状态）的渥太华砂，而应力控制和应变控制的循环三轴和直接简单剪切试验提供了关键信息的循环应力-应变行为和液化强度的这种土壤。三轴试验确定了不同密度下土的液化强度，而直接单剪试验评估了上覆压力对循环响应的影响。这些实验的结果也比较文献中的实验结果。通过绘制剪切模量退化曲线和阻尼曲线，对循环三轴和直接单剪试验数据进行了分析。结果表明，在不同的密度和围压下，土体的刚度随循环剪应力的作用而降低。结果表明，剪切模量退化速率随围压的增大而增大，随土体密度的增大而减小。阻尼曲线一致地示出阻尼比的增加，直到剪切应变为约0.05%，随后对于0.05和0.5%之间的剪切应变，在约20-25%阻尼比处达到平台，并且以阻尼的减小结束，直到达到约10%的最终阻尼比。
The stress-strain-strength response of soils is of significant interest to development and calibration of realistic constitutive models that can be used in numerical simulation of geotechnical engineering problems. An extensive characterization of Ottawa F65 sand along with various monotonic and cyclic tests conducted during the course of the Liquefaction Experiments and Analysis Projects (LEAP) are presented here. The specimens in these tests were prepared using a meticulous sample preparation technique to facilitate their consistency and repeatability. Monotonic drained and undrained triaxial tests shed light on the steady-state (critical state) of Ottawa sand, while stress-controlled and strain-controlled cyclic triaxial and direct simple shear tests provide key information on the cyclic stress-strain behavior and liquefaction strength of this soil. The triaxial tests identify the liquefaction strength of the soil at different densities, while the direct simple shear tests evaluate the effect of overburden pressure on the cyclic response. The results of these experiments are also compared to the experimental results available in the literature. The data obtained from the cyclic triaxial and direct simple shear tests were further analyzed by plotting the computed shear modulus degradation and damping curves. The results show how the soil stiffness degrades as cyclic shear stress is applied for soil at different densities and confining stresses. It can be seen that the rate of shear modulus degradation increases with the increase of confining stress and decreases with the increase of soil density. The damping curves consistently show an increasing in damping ratio until a shear strain of about 0.05%, followed by a plateau at about 20–25% damping ratio for shear strain between 0.05 and 0.5%, and ending with a decrease in damping until reaching a final damping ratio of about 10%.
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DOI：
10.1007/978-3-030-22818-7_4
发表时间：
2019
期刊：
--
影响因子：
--
作者：
B. Kutter;T. Carey;N. Stone;B. L. Zheng;Andreas G. Gavras;M. Manzari;M. Zeghal;T. Abdoun;E. Korre;S. Escoffier;S. Haigh;G. Madabhushi;S. Madabhushi;W. Hung;Ting-Wei Liao;Dong‐Soo Kim;Seong-Nam Kim;J. Ha;N. Kim;M. Okamura;Asri Nurani Sjafruddin;T. Tobita;K. Ueda;Ruben R. Vargas;Yan-Guo Zhou;Kai Liu
通讯作者：
B. Kutter;T. Carey;N. Stone;B. L. Zheng;Andreas G. Gavras;M. Manzari;M. Zeghal;T. Abdoun;E. Korre;S. Escoffier;S. Haigh;G. Madabhushi;S. Madabhushi;W. Hung;Ting-Wei Liao;Dong‐Soo Kim;Seong-Nam Kim;J. Ha;N. Kim;M. Okamura;Asri Nurani Sjafruddin;T. Tobita;K. Ueda;Ruben R. Vargas;Yan-Guo Zhou;Kai Liu
渥太华 F-65 砂表征
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
Parra Bastidas;A. María
通讯作者：
A. María
DOI：
10.1007/978-3-030-22818-7_10
发表时间：
2019
期刊：
--
影响因子：
--
作者：
M. Manzari;Mohamed El Ghoraiby;M. Zeghal;B. Kutter;P. Arduino;A. R. Barrero;E. Bilotta;Long Chen;Renren Chen;A. Chiaradonna;A. Elgamal;G. Fasano;K. Fukutake;W. Fuentes;Alborz Ghofrani;S. Haigh;W. Hung;K. Ichii;Dong-Soo Kim;T. Kiriyama;C. Lascarro;G. Madabhushi;Vicente Mercado;J. Montgomery;M. Okamura;O. Ozutsumi;Z. Qiu;M. Taiebat;T. Tobita;T. Travasarou;Dimitra Tsiaousi;K. Ueda;J. Ugalde;T. Wada;Rui Wang;Ming-hui Yang;Jian-Min Zhang;Yan-Guo Zhou;K. Ziotopoulou
通讯作者：
M. Manzari;Mohamed El Ghoraiby;M. Zeghal;B. Kutter;P. Arduino;A. R. Barrero;E. Bilotta;Long Chen;Renren Chen;A. Chiaradonna;A. Elgamal;G. Fasano;K. Fukutake;W. Fuentes;Alborz Ghofrani;S. Haigh;W. Hung;K. Ichii;Dong-Soo Kim;T. Kiriyama;C. Lascarro;G. Madabhushi;Vicente Mercado;J. Montgomery;M. Okamura;O. Ozutsumi;Z. Qiu;M. Taiebat;T. Tobita;T. Travasarou;Dimitra Tsiaousi;K. Ueda;J. Ugalde;T. Wada;Rui Wang;Ming-hui Yang;Jian-Min Zhang;Yan-Guo Zhou;K. Ziotopoulou
影响因子：
4
作者：
M. Manzari;Mohamed El Ghoraiby;B. Kutter;M. Zeghal;T. Abdoun;P. Arduino;R. Armstrong;M. Beaty;T. Carey;Yunmin Chen;Alborz Ghofrani;D. Gutierrez;Nithyagopal Goswami;S. Haigh;W. Hung;S. Iai;P. Kokkali;Chung-Jung Lee;S. Madabhushi;L. Mejia;M. Sharp;T. Tobita;K. Ueda;Yan-Guo Zhou;K. Ziotopoulou
通讯作者：
M. Manzari;Mohamed El Ghoraiby;B. Kutter;M. Zeghal;T. Abdoun;P. Arduino;R. Armstrong;M. Beaty;T. Carey;Yunmin Chen;Alborz Ghofrani;D. Gutierrez;Nithyagopal Goswami;S. Haigh;W. Hung;S. Iai;P. Kokkali;Chung-Jung Lee;S. Madabhushi;L. Mejia;M. Sharp;T. Tobita;K. Ueda;Yan-Guo Zhou;K. Ziotopoulou
LEAP-2017 模拟练习：本构模型的校准和元件测试的模拟
DOI：
10.1007/978-3-030-22818-7_9
发表时间：
2019
期刊：
Proceedings of LEAP-UCD-2017 workshop
影响因子：
--
作者：
Manzari, M.T.
通讯作者：
Manzari, M.T.