Numerical simulation of macromechanical properties of deep-sea energy soil by discrete element method under simplified bond model

XIAO Yu; JIANG Ming-jing; SUN Yu-gang

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Numerical simulation of macromechanical properties of deep-sea energy soil by discrete element method under simplified bond model

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- Numerical simulation of macromechanical properties of deep-sea energy soil by discrete element method under simplified bond model
- Vol. 32, Issue S1, (2011)
- 作者机构：
  
  1. 同济大学岩土及地下工程教育部重点实验室,上海,200092
  2. 同济大学土木学院地下建筑与工程系,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：16 May 2011，
  
  Published：2011
- 稿件说明：
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XIAO Yu, JIANG Ming-jing, SUN Yu-gang. Numerical simulation of macromechanical properties of deep-sea energy soil by discrete element method under simplified bond model[J]. 2011, 32(S1).
DOI：

XIAO Yu, JIANG Ming-jing, SUN Yu-gang. Numerical simulation of macromechanical properties of deep-sea energy soil by discrete element method under simplified bond model[J]. 2011, 32(S1). DOI：

摘要

根据蒋明镜等所提出天然结构性砂土微观胶结模型[1–2]及微观胶结试验结果[3–5]，将该模型引入离散元商业软件PFC2D，进行能源土双轴试验离散元数值模拟分析，并同Masui等[6]能源土三轴试验结果进行对比分析，结果表明，蒋明镜等所提出胶结模型能够较好的模拟水合物的微观胶结力学行为，水合物胶结的存在对能源土强度具有一定的贡献。

Abstract

A micro-bond contact model[1–2] proposed and verified by Jiang[3–5] et al. is incorporated into PFC2D developed by Itasca. Then biaxial test is carried out to simulate the mechanical properties of deep-sea energy soil; and comparison analysis with the triaxial test done by Masui [6] et al. is done. The results show that the macromechanical properties of deep-sea energy soil and the influence of gas hydrate can be reflected through the micro-bond contact proposed by Jiang [1

2] et al.; and the existence of gas hydrate has some contribution to the strength of deep-sea energy soil.

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