Investigations on uplift failure of pipe buried in cemented seabed using distinct element method

YAN Chao; JIANG Ming-jing; ZHANG Wang-cheng; SUN De-an

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Investigations on uplift failure of pipe buried in cemented seabed using distinct element method

更新时间：2026-06-25

- Investigations on uplift failure of pipe buried in cemented seabed using distinct element method
- Vol. 33, Issue 9, (2012)
- 作者机构：
  
  1. 上海大学土木工程系,上海,200072
  2. 同济大学地下建筑与工程系,上海,200092
  3. 同济大学岩土及地下工程教育部重点实验室,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：12 September 2012，
  
  Published：2012
- 稿件说明：
移动端阅览
YAN Chao, JIANG Ming-jing, ZHANG Wang-cheng, et al. Investigations on uplift failure of pipe buried in cemented seabed using distinct element method[J]. 2012, 33(9).
DOI：

YAN Chao, JIANG Ming-jing, ZHANG Wang-cheng, et al. Investigations on uplift failure of pipe buried in cemented seabed using distinct element method[J]. 2012, 33(9). DOI：

摘要

借助离散单元法（DEM）建立海底管道上浮模型，模拟分析了不同胶结强度下胶结试样的力学特性；通过微观力学响应（局部变形、胶结点破坏分布和位移场）对海底管道上浮破坏机制进行分析；对比分析了海床砂土胶结强度对管道上浮土体破坏的影响（上浮抗力和地表隆起量）。结果表明：伴随土体变形和胶结破坏，上覆土体的渐进破坏主要集中在上覆土体区域内；土表隆起量随着管道上浮位移的增长而增长；胶结强度较高时，管道周围土体无回填行为，上覆土体有拉裂带形成，仅管道附近土体产生胶结破坏，峰值上浮抗力随海床砂土胶结强度的增加有显著提高

Abstract

This paper presents a numerical study of the resistance and failure of cemented seabed burying an uplifting pipe using distinct element method (DEM). The mechanical properties of cemented sand are firstly simulated and analyzed with various inter-grain bond strength; and then

local deformation

distribution of broken bond

and displacement fields are investigated to analyze the failure mechanism of cemented seabed with different bond strength during pipe uplifting; Finally

uplift resistances and upheaval displacement of cemented seabed are discussed with respect to bond strength effect. The results show that the ground deformation and inter-grain bond failure are mainly located in overlying soils of the pipe. Furthermore

The backfilling of soils beneath the pipe vanishes as the increase of bond strength

an apparent tensile-failure rupture above the pipe

and an enhanced uplift resistance of cemented seabed are observed. In addition

the upheaval displacement of seabed increases with the pipe uplift displacement.

关键词

Keywords

references

Views

1858

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A DEM modelling of mechanical behaviour of artificially cemented sand

Numerical analysis of cone penetration tests under different gravity fields by distinct element method

Distinct element analysis of macro-mechanical properties of deep-sea methane hydrate-bearing soil using micro-bond thickness model

Distinct element analysis of shear band of lunar soil in biaxial tests

Distinct element simulation of passive earth pressure against a translating rigid wall using a rolling resistance contact model

Related Author

JIANG Ming-jing

SUN Yu-gang

WANG Xin-xin

JIANG Ming-jing

ZHOU Ya-ping

HE Jie

JIANG Ming-jing

WANG Chuang

Related Institution

Deptartment of Geotechnical Engineering, College of Civil Engineering, Tongji University

Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University

China Academy of Space Technology

Broadvision Engineering Consultants

Key Laboratory of Geotechnical and Underground of Ministry of Education, Tongji University

AI问答

⁰