地震波斜入射下埋地腐蚀管道地震响应分析  

Seismic Response Analysis of Buried Corroded Pipelines Under Incident Seismic Waves

作　　者：薛景宏[1,2] 陆大伟 李东瑞 程安顿 韩通 XUE Jinghong;LU Dawei;LI Dongrui;CHENG Andun;HAN Tong(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Heilongjiang Key Laboratory of Disaster Prevention,Mitigation and Protection Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318 [2]黑龙江省教育厅防灾减灾及防护工程重点实验室,黑龙江大庆163318

出　　处：《河北工程大学学报（自然科学版）》2024年第4期18-27,35,共11页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：中国地震局工程力学研究所基本科研业务费专项资助项目(2020D25);国家自然科学基金资助项目(51178087)。

摘　　要：以埋地X80管道为研究对象,探讨入射角和腐蚀参数以及保温层对管道腐蚀区域地震响应的影响规律。在P波和SV波激励下,入射角θv和θh大约为60°和45°及30°和45°时,管道腐蚀区域中心应力达到最大值556.7和559.7 MPa;相比垂直入射下的441.3和437.0 MPa,分别增大了26.1%和28.0%。入射角为最大响应角度时,P波和SV波下腐蚀深度、长度和宽度对腐蚀管道应力影响占比分别为58.0%和51.9%、22.8%和27.1%以及19.2%和21.0%。管道保温层厚度的增加,会有效减小地震作用下管道腐蚀区的最大应力。因此,在管道抗震设计与维护中,应关注地震波入射角度和腐蚀深度,并考虑保温层的隔震作用。This paper takes buried X80 pipeline as the research object,and discusses the influence law of incidence angle,corrosion parameters and insulation layer on seismic response of pipeline corrosion area.Under the excitation of P wave and SV wave,the stress in the center of the pipeline corrosion area reaches the maximum value of 556.7 and 559.7 MPa and increases by 26.1%and 28.0%when the incidence anglesθv andθh are 60°and 45°and 30°and 45°,respectively,compared to that of 441.3 and 437.0 MPa under the vertical incidence.When the incidence angle was the maximum response angle,the influence ratio of corrosion depth,length and width on corrosion pipe stress under P wave and SV wave was 58.0%and 51.9%,22.8%and 27.1%,and 19.2%and 21.0%,respectively.The increase of the thickness of the pipeline insulation layer can effectively reduce the maximum stress in the corrosion zone of the pipeline under earthquake.Therefore,in the seismic design and maintenance of pipelines,we should pay attention to the incidence angle of seismic waves and corrosion depth,and consider the seismic isolation effect of insulation layer.

关 键 词：X80腐蚀管道 地震波斜入射 黏弹性人工边界 安全评价 P波 SV波 

分 类 号：TU968[建筑科学]