埋地输气管道落石冲击响应的试验研究
作者:马文江1, 李海胜2 作者单位:1. 北京科技大学自然科学基础实验中心, 北京 100083;
2. 北京科技大学国家材料服役安全科学中心, 北京 100083 发布时间:2018-09-27 15:48:15 点击数:34

PDF下载[4] HTML[0]

关键词:落石冲击;输气管道;结构安全性;试验研究
摘要:

随着管道工业的发展,管道安全性也越来越受到重视,落石冲击等第三方破坏已逐渐成为埋地管道失效破坏的主要因素。关于落石冲击作用下埋地管道的动态响应的数值模拟研究较多,而试验方面的研究特别是现场试验并不多见。首先搭建可用于落石冲击下埋地管道动态响应试验研究的试验平台,进而基于此试验平台针对埋地输气管道在不同高度下的落石冲击响应进行现场试验研究。研究表明,随着落石高度的增加,落石冲击时间稍有增加,管道应变及沉降量逐渐增加,在落石能量约为56.84 kJ时,管道顶面落石冲击点区域附近出现塑性变形。相关结果可以为输气管道的安全铺设及安全评估提供参考。

Experimental study on rockfall impact response of buried gas pipeline

MA Wenjiang1, LI Haisheng2

1. Basic Experimental Center for Natural Science, University of Science and Technology Beijing, Beijing 100083, China;
2. National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China

Abstract: With the development of pipeline industry, pipeline safety receives more and more attention, and third-party damage such as rockfall impact gradually becomes the main factor of buried pipeline failure and damage. Many researches have been conducted on the numerical simulation about the dynamic response of the buried pipeline under rockfall impact, while rarely seen experimental study on this subject, especially field tests. A test platform for research of dynamic response of buried pipeline under rockfall impact is firstly established in present paper, based on this platform, field experimental study on rockfall impact responses of buried pipeline at different heights is carried out. Results show that, with the increment of the rock height, the rockfall impact time is slightly increased, as well as the pipeline strain and settlement of the pipeline. When rockfall impact energy is 56.84 kJ, plastic strain is appeared in at the top of the pipeline around impact location. Relevant results in the present paper can be an important reference for safety laying and evaluation of the buried gas pipeline.

Keywords: rockfall impact;gas pipelines;structural safety;experimental investigation

2018, 44(9): 23-28  收稿日期: 2018-04-07;收到修改稿日期: 2018-05-09

基金项目: 中央高校基本科研业务费专项资金资助项目(FRF-TP-14-030A1)

作者简介: 马文江(1971-),男,河北东光县人,高级工程师,主要研究方向为疲劳振动

参考文献

[1] 宋艾玲, 梁光川, 王文耀. 世界油气管道现状与发展趋势[J]. 油气储运, 2006, 25(10):1-6
[2] 潘家华. 我国油气管道用钢及焊管的发展方向[J]. 宝钢技术, 1998(4):19-21
[3] 潘家华. 我国管道工业当前发展中的一些重要课题[J]. 油气储运, 2003, 22(1):1-3
[4] 方东晓. 影响天然气管道安全的危害因素分析及对策探讨[J]. 上海煤气, 2008(3):38-41
[5] PICHLER B, HELLMICH CH, MANG H A. Impact of rocks onto gravel design and evaluation of experiments[J]. International Journal of Impact Engineering, 2005, 31(5):559-578
[6] DATTA T K. Seismic response of buried pipelines:a state-of-the-art review[J]. Nuclear Engineering and Design, 1999, 192:271-284
[7] 李渊博, 王建华, 张国涛, 等. 岩土崩塌冲击作用下埋地管道应力与变形分析[J]. 后勤工程学院学报, 2010, 26(6):31-35
[8] 王磊, 邓清禄, 杨辉建, 等. 危岩体坠落冲击对输气管道影响的分析评价[J]. 水文地质工程地质, 2007(5):29-32
[9] 邓学晶, 薛世峰, 仝兴华. 崩滑岩体对埋地管线横向冲击作用的数值模拟[J]. 中国石油大学学报(自然科学版), 2009, 33(6):111-115
[10] 邢义锋, 姚安林, 曾祥国, 等. 滚石作用下钢质管道动力响应分析及其应用[J]. 工业建筑, 2009, 39:462-465
[11] 杨其新, 关宝树. 落石冲击力计算方法的试验研究[J]. 铁道学报, 1996, 18(1):101-106
[12] 张瑜, 丁庆荣, 狄先均, 等. 隧道逃生管道的冲击实验与仿真模拟[J]. 华中科技大学学报(城市科学版), 2010, 27(2):87-89
[13] PRISCO C, GALLI A. Soil-pipe interaction under monotonic and cyclic loads:experimental and numerical modelling[C]//1st Euro-Mediterranean Symp——osium on Advances in Geomaterials and Structures, 2006:755-761.

内容:
昵称:
验证码:    点击刷新
全部评论:(0)
年份:
标题:
作者:
关键词:
内容: