|本期目录/Table of Contents|

[1]韩传军,张瀚,张杰,等.地表夯击载荷作用下埋地管道力学分析[J].中国安全生产科学技术,2015,11(10):61-67.[doi:10.11731/j.issn.1673-193x.2015.10.011]
 HAN Chuan-jun,ZHANG Han,ZHANG Jie,et al.Mechanical analysis on buried pipeline under effect of surface tamping impact load[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(10):61-67.[doi:10.11731/j.issn.1673-193x.2015.10.011]
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地表夯击载荷作用下埋地管道力学分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年10期
页码:
61-67
栏目:
职业安全卫生管理与技术
出版日期:
2015-10-30

文章信息/Info

Title:
Mechanical analysis on buried pipeline under effect of surface tamping impact load
文章编号:
1673-193X(2015)-10-0061-07
作者:
韩传军1张瀚1张杰1 李翔23
(1. 西南石油大学 机电工程学院,四川 成都 610500;2. 西南石油大学 石油与天然气工程学院,四川 成都 610500;3. 中国石油西南油气田分公司输气管理处,四川 成都 610213)
Author(s):
HAN Chuan-jun1 ZHANG Han1 ZHANG Jie1 LI Xiang23
1.School of Mechatronic Engineering, Southwest Petroleum University, Chengdu Sichuan 610500, China;2. School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu Sichuan 610500, China;3. Gas Transmission Department of Southwest Branch, PCL., Chengdu Sichuan 610213, China)
关键词:
埋地管道夯击载荷冲击力等效应力塑性应变
Keywords:
buried pipeline tamping impact load impact force equivalent stress plastic strain
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2015.10.011
文献标志码:
A
摘要:
为研究地基强夯作业中夯击载荷对埋地管道力学性能的影响,基于有限元原理建立了夯锤-管道-围土耦合三维模型,分析了夯击过程中管道截面变形及所受冲击力变化规律,研究了管道壁厚、夯击速度、夯锤体积对管道应力、应变及变形的影响规律。结果表明:夯击载荷下的管道所受冲击力为脉冲型,且随时间推移逐渐降低为0,最大冲击力随管道壁厚、夯击速度、夯锤体积增大而增大;管道最大等效应力、高应力范围及最大等效塑性应变随壁厚增加而减小,但随夯击速度或夯锤体积增大而增大;随着夯击速度、夯锤体积增大,管道截面变形率(椭圆度或凹陷率)逐渐增大,但其随壁厚增加而减小。
Abstract:
In order to study the effect of tamping impact load on mechanical property of buried pipeline in the dynamic compaction operation of foundation, a three-dimensional model coupling rammer, pipeline and soil was established based on finite element principle. The variation regulations of section deformation and impact force of pipeline in the tamping impact process were analyzed, and the influence regulations of wall thickness of pipeline, tamping impact velocity and volume of rammer on the stress, strain and deformation of pipeline were studied. The results showed that the impact force received by the pipeline under the tamping impact load is pulse-type, and it reduces to zero over time gradually. The maximum impact force increases with the increase of wall thickness of pipeline, tamping impact velocity and volume of rammer. The maximum equivalent stress, the range of high stress and the maximum equivalent plastic strain of pipeline decrease with the increase of wall thickness, while increase with the increase of tamping impact velocity and volume of rammer. The section deformation rate of pipeline (ovality or sag ratio) increases with the increase of tamping impact velocity and volume of rammer, while decreases with the increase of wall thickness.

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备注/Memo

备注/Memo:
收稿日期:2015-07-30
作者简介:韩传军,博士后,副教授。
通讯作者:张瀚,硕士研究生。
基金项目:四川省科技创新苗子工程资助项目(2015097);国家自然科学基金项目(51474180)
更新日期/Last Update: 2015-12-01