Study on Liquefaction Characteristics of Saturated Sand Based on Inter⁃particle Contact

ZHOU Enquan; YAO Yuan; WANG Long; BU Chunyao; YI Sihang

doi:10.13409/j.cnki.jdpme.20220724004

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Study on Liquefaction Characteristics of Saturated Sand Based on Inter⁃particle Contact

更新时间：2025-09-25

- Study on Liquefaction Characteristics of Saturated Sand Based on Inter⁃particle Contact
- Journal of Disaster Prevention and Mitigation Engineering Vol. 44, Issue 2, Pages: 450-458(2024)
- 作者机构：
  
  1.江苏大学土木工程与力学学院,江苏镇江 212013
  2.江南大学机械工程学院,江苏无锡 214122
  3.中国地震局地球物理研究所,北京 100081
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20220724004
  CLC： TU43
- Received：24 July 2022，
  
  Revised：2022-09-17，
  
  Published：25 April 2024
- 稿件说明：
移动端阅览
周恩全,姚缘,王龙等.基于粒间接触关系的饱和砂土液化特性研究[J].防灾减灾工程学报,2024,44(02):450-458.

ZHOU Enquan,YAO Yuan,WANG Long,et al.Study on Liquefaction Characteristics of Saturated Sand Based on Inter⁃particle Contact[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(02):450-458.
周恩全,姚缘,王龙等.基于粒间接触关系的饱和砂土液化特性研究[J].防灾减灾工程学报,2024,44(02):450-458. DOI： 10.13409/j.cnki.jdpme.20220724004.

ZHOU Enquan,YAO Yuan,WANG Long,et al.Study on Liquefaction Characteristics of Saturated Sand Based on Inter⁃particle Contact[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(02):450-458. DOI： 10.13409/j.cnki.jdpme.20220724004.

摘要

为了研究饱和砂土的液化机理，通过等体积加载的方式建立了循环荷载下饱和砂土动力响应的颗粒流计算模型，研究了饱和砂土在不同围压和加载幅值下的动力响应，探讨了颗粒间力链的发展特性，并从Shannon熵、Boltzmann熵以及Clausius熵的基本关系入手，建立基于粒间接触力链的饱和砂土颗粒熵计算方法，分析了颗粒熵发展特性。结果表明：饱和砂土初始总力链主要受围压的影响，围压越大，初始总力链越多；循环荷载下饱和砂土颗粒间力链总数逐渐降低，且强力链持续向中、弱力链转换；循环荷载下饱和砂土颗粒熵表现出先升高后降低的二阶段特性，围压和加载幅值对颗粒熵峰值无明显影响，各工况的颗粒熵峰值均为0.92；定义颗粒熵峰值为相变颗粒熵，相变颗粒熵时的饱和砂土表现出固液临界态的力学特征，指示了饱和砂土由固态向往返液化状态转变的临界点。

Abstract

In order to study the liquefaction mechanism of saturated sand

a particle flow calculation model was developed to investigate its dynamic response under cyclic loading using isochoric loading. The study examined the dynamic response of saturated sand under different confining pressures and loading amplitudes

exploring the development characteristics of inter-particle force chains. Using the basic relationships of Shannon entropy

Boltzmann entropy

and Clausius entropy

a method for calculating particle entropy in saturated sand was established based on inter-particle force chains. The development characteristics of particle entropy in saturated sand were analyzed. The results showed that the total number of initial force chains in saturated sand was primarily influenced by confining pressure and increased with higher pressure. Under cyclic loading

the total number of force chains between saturated sand particles gradually decreased

with strong force chains transitioning to medium and weak force chains. The particle entropy of saturated sand exhibited a two-phase characteristic

initially increasing and then decreasing. Confining pressure and loading amplitude had no significant effect on the particle entropy peak value

which was 0.92 under different cases. The peak value of particle entropy was defined as the phase-change particle entropy. The saturated sand with phase-change particle entropy showed mechanical characteristics at the solid-liquid critical state

indicating the transition of saturated sand from a solid state to a cyclic liquefaction state.

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references

陈国兴，吴琪，孙苏豫，等 . 土壤地震液化评价方法研究进展［J］. 防灾减灾工程学报， 2021 ， 41 （ 4 ）： 677 - 733 .

Chen G X ， Wu Q ， Sun S Y ， et al . Advances in soil liquefaction triggering procedures during earthquakes： retrospect and prospect ［J］. Journal of Disaster Prevention and Mitigation Engineering ， 2021 ， 41 （ 4 ）： 677 - 733 . （in Chinese）

刘洋，周健，吴顺川 . 循环荷载下砂土变形的细观数值模拟Ⅰ：松砂试验结果［J］. 岩土工程学报， 2007 ， 29 （ 7 ）： 1035 - 1041 .

Liu Y ， Zhou J ， Wu S C . Micro-numerical simulation of cyclic biaxial test I： results of loose sand ［J］. Chinese Journal of Geotechnical Engineering ， 2007 ， 29 （ 7 ）： 1035 - 1041 . （in Chinese）

Huang X ， Hanley K ， Zhang Z X ， et al . Structural degradation of sands during cyclic liquefaction： Insight from DEM simulations ［J］. Computers and Geotechnics ， 2019 ， 114 ： 1 - 10 .

谢亦红，尹祖超，李亮，等 . 砂土静动力液化特性的数值模拟［J］. 公路交通科技， 2020 ， 37 （ 12 ）： 33 - 39 .

Xie Y H ， Yin Z C ， Li L ， et al . Numerical simulation of static and dynamic liquefaction of sand ［J］. Journal of Highway and Transportation Research and Development ， 2020 ， 37 （ 12 ）： 33 - 39 . （in Chinese）

徐华德 . 典型海运散矿的关键物性参数对液化影响的研究［D］. 大连：大连海事大学， 2020 .

Xu H D . Research on the influence of key physical parameters of typical marine bulk ore on liquefaction ［D］. Dalian ： Dalian Maritime University ， 2020 . （in Chinese）

Morimoto T ， Otsubo M ， Koseki J . Microscopic investigation into liquefaction resistance of pre-sheared sand： Effects of particle shape and initial anisotropy ［J］. Soils and Foundations ， 2021 ， 61 ： 335 - 351 .

Zhang M ， Yang Y M ， Zhang H W ， et al . Macro- and micro-mechanical investigations on liquefaction behaviour of granular material under bi-directional simple shear ［J］. Granular Matter ， 2021 ， 23 （ 4 ）： 1 - 18 .

张伏光，聂卓琛，陈孟飞，等 . 不排水循环荷载条件下胶结砂土宏微观力学性质离散元模拟研究［J］. 岩土工程学报， 2021 ， 3 （ 3 ）： 456 - 464 .

Zhang F G ， Nie Z C ， Chen M F ， et al . DEM analysis of macro- and micro-mechanical behaviors of cemented sand subjected to undrained cyclic loading ［J］. Chinese Journal of Geotechnical Engineering ， 2021 ， 3 （ 3 ）： 456 - 464 . （in Chinese）

王志华，周恩全，陈国兴，等 . 循环荷载下饱和砂土固-液相变特征［J］. 岩土工程学报， 2012 ， 34 （ 9 ）： 1604 - 1610 .

Wang Z H ， Zhou E Q ， Chen G X ， et al . Characteristics of solid-liquid phase change of saturated sand under cyclic loading ［J］. Chinese Journal of Geotechnical Engineering ， 2012 ， 34 （ 9 ）： 1604 - 1610 . （in Chinese）

卜春尧 . 循环荷载下饱和砂土流动性的细观调查［D］. 南京：南京工业大学， 2016 .

Bu C Y . Microscopic investigation on flowability of saturated sands under cyclic loadings ［D］. Nanjing ： Nanjing Tech University ， 2016 . （in Chinese）

Shannon C E . A mathematical theory of communication ［J］. Bell System Technical Journal ， 1948 ， 27 （ 3 ）： 379 - 423 .

Kerson H . Introduction to Statistical Physic ［M］. ［ S.l. ］： CRC Press ， 2011 .

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