挖掘荷载冲击下输气管道动力响应分析

Dynamic Response Analysis of Gas Pipeline Under Excavation Load Impact

为了对挖掘荷载冲击下输气管道的动力响应情况与影响因素进行分析,利用ANSYS AUTODYN有限元软件对挖掘荷载冲击管道的过程进行数值模拟,根据仿真结果分析不同挖掘环境下管道的受损程度。研究结果表明:当受到挖掘荷载的作用时,管道的应力分布成对称状,在荷载作用位置单元处,有效应力达到最大值,且挖掘荷载大小与斗齿数对管道受损程度的影响较为明显。

In order to analyze the dynamic response and influencing factors of the gas pipeline under the impact of the excavation load,ANSYS AUTODYN finite element software was used to carry out numerical simulation of the process of the pipeline under the impact of the excavation load,and the damage degree of the pipeline under different excavation environments was analyzed according to the simulation results.The results show that the stress distribution of the pipe is symmetrical when the pipe is subjected to the excavation load,the effective stress reaches the maximum value at the load position unit,and the excavation load as well as the number of bucket teeth have obvious influence on the damage degree of the pipe.