【摘要】 地震是威胁长输管道安全的一种最为严重的自然灾害。近年来,地震灾害频繁发生,而且随着大型天然气管道工程的建设和大口径、高压力管道钢的投入使用,研究地震作用下长输管道的安全性对保障管道安全可靠运行有着重要意义。本文对国内外在长输管道的地震反应与稳定性研究领域内的现状及存在的问题进行了综述,在此基础上,指出应当深入对气固耦合作用下管道的力学响应、高级别管道钢在地震灾害作用下的安全性、特殊土体和多种地质灾害共同作用下管道的破坏机理以及地震灾害级别与管道破坏关联性等方面进行研究,以为采取相应的抗震措施提供依据。更多还原

【Abstract】 Earthquake is the most severe natural disaster threatening safety of pipelines,and the compression,distortion and cracks of pipelines will occur under seismic action.In recent years,earthquakes have occurred frequently and,with the construction of large long-distance natural gas pipelines and the use of large-diameter and high-pressure steel pipes,the research of the safety of pipelines under seismic action to guarantee the safe and reliable operation of pipelines is critical.At present,scholars have established many models on analyzing the damage patterns of pipelines under seismic action and lots of achievements on theoretical analysis,numerical simulation and experimental research have been made.Based on the description of progress both at home and abroad,this paper points out that the mechanical response of pipelines under gas-solid coupling,the safety of higher level steel pipelines under seismic action,the damage mechanism of pipelines under peculiar soil and various geological disasters,and the relevance between seismic hazard and pipeline damage should be further studied.更多还原