不同岩石对埋地输气管道撞击的数值计算
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摘要
为解决山体上部的危岩体易对下部埋地高压输气管道造成威胁的问题,在ANSYSWorkbench中建立不同体积岩石撞击埋地管道的有限元模型,利用ANSYS/LS-DYNA计算得出岩石侵入土体的位移及对埋地管道受到撞击后的应力,获得埋地管道在不同岩石坠落撞击事故下的破坏情况.计算结果能为高压输气管道建设及安全运行提供参考.
As to the issue that the dangerous rock on the upper part mountain easily threat on the high-pressure gas pipeline which is buried in the lower part of the mountain,the finite element model of buried pipeline impacted by different sizes of rocks are established in ANSYS Workbench.The displacement of rocks which intrude into the soil and the stress of impacted buried gas pipeline are calculated by using ANSYS/LS_DYNA.Then the damage of buried gas pipeline is obtained in different rock-fall impact accident.The computation results can provide references for the construction and safe operation of high pressure gas pipeline.
As to the issue that the dangerous rock on the upper part mountain easily threat on the high-pressure gas pipeline which is buried in the lower part of the mountain,the finite element model of buried pipeline impacted by different sizes of rocks are established in ANSYS Workbench.The displacement of rocks which intrude into the soil and the stress of impacted buried gas pipeline are calculated by using ANSYS/LS_DYNA.Then the damage of buried gas pipeline is obtained in different rock-fall impact accident.The computation results can provide references for the construction and safe operation of high pressure gas pipeline.
引文
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[2]姜俊荣,丁建林.1970—1992年欧洲输气管道事故[J].油气储运,1997,16(5):56-57.JIANG Junrong,DING Jianlin.European gas pipeline incident from 1970 to 1992[J].Oil&Gas Storage&Transportation,1997,16(5):56-57.
[3]周小军.危岩对天然气输气管道的危害[J].西部探矿工程,2009(1):11-13.ZHOU Xiaojun.The hazards of natural gas pipelines impacted by dangerous rock[J].West-China Exploration Eng,2009(1):11-13.
[4]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.WANG Lei,DENG Qinglu,YANG Huijian,et al.Evaluation on the safety of natural gas pipeline impacted by dangerous rock fall[J].Hydroge-ology&Eng Geology,2007(5):29-32.
[5]Federal Highway Administration.Evaluation of LS_DYNA soil material model 147,FHWA-HRT-04-094[R].McLean,VA:Fed Highway Ad-ministration,2004.
[6]赵师平,曾祥国,姚安林,等.第三方载荷作用下埋地输气管道动力响应的数值模拟[J].四川建筑科学研究,2009,35(1):134-139.ZHAO Shiping,ZENG Xiangguo,YAO Anlin,et al.Dynamic response numerical simulation of buried gas pipeline during third-party interference[J].Sichuan Building Sci,2009,35(1):134-139.
[7]叶金汉,郗绮霞,夏万仁,等.岩石力学参数手册[M].北京:中国水利水电出版社,1991:30-33.
[8]WANG J.Simulation of landmine explosion using LS_DYNA 3D software:benchmark work of simulation in soil and air[R].Canada:WeaponsSystems Division Aeronautical&Maritime Res Lab,2001.
[9]O’DANIEL J L,KRAUTHAMMER T.Assessment of numerical simulation capabilities for medium-structure interaction systems under explosiveloads[J].Computers&Structures,1997,63(5):875-887.
[10]郭毅之,金先龙,丁峻宏,等.沉管隧道地震响应分析中的三维接触模型与算法研究[J].应用力学学报,2006,23(1):48-52.GUO Yizhi,JIN Xianlong,DING Junhong,et al.Three-dimensional contact model and algorithm for earthquake response of immersed tunnel[J].Chin J Appl Mech,2006,23(1):48-52.
[11]杨政,郭万林,董惠茹,等.X70管线钢静态和动态韧性试验研究[J].西安交通大学学报,2003,37(5):488-491.YANG Zheng,GUO Wanlin,DONG Huiru,et al.Static and dynamic tests of X70 pipeline steel[J].J Xi’an Jiaotong Univ,2003,37(5):488-491.
[12]贾普荣,李年,朱维斗.反向加载时X70钢的力学性能[J].机械强度,2005,27(1):82-84.JIA Purong,LI Nian,ZHU Weidou.Mechanical properties of X70 pipeline steel at reverse loading[J].J Mech Strength,2005,27(1):82-84.
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