Petroleum pipelines across slopes can produce obvious mechanical responses to seismic landslide thrust. In order to rationally calculate internal forces and displacements of the pipeline due to the seismic landslide of the soil mass surrounding it, a mechanical analysis method of the pipeline is proposed based on the Timoshenko beam considering lateral shear deformation on the Winkler foundation with the normal trapezial earth pressure on it, in which the seismic earth pressure is determined using the transfer coefficient method combined with the pseudo-static method. The formulas of internal forces and displacement of the pipeline are accordingly derived, and the material determination approach is put forward according to the control of its safe stress state. Analysis results of an example show that the pipeline deflection increases with the distance to the slide mass boundary, and the maximum bending moment and shear force on the pipeline are nearly located in the boundary, which is consistent with that by the numerical simulation via FLAC3D. The distribution mode of the internal forces is not almost varied with seismic coefficients, pipeline length in the slide mass, and cross-section of the pipeline. However, the maximum bending moment and shear force are nonlinearly increasing with the horizontal seismic coefficient, slightly increasing with the cross-section, and marginally decreasing with the increase of the pipeline length in the slide mass.
Xie Cheng
,
Zhao Zizhen
,
Liu Jun
,
Xiao Shiguo
,
Dai Tianyi
. Pseudo-Static Analysis Method for Petroleum Pipelines Across Slope Surfaces under Earthquakes Effect[J]. Chinese Journal of Underground Space and Engineering, 2025
, 21(6)
: 2148
-2158
.
DOI: 10.20174/j.JUSE.2025.06.30
[1] 杨大慎, 陈廷君, 姜红涛, 等.沿山脊走向长输油气管道强震动力响应特征[J].地质科技通报,2021,40(6):97-105.(Yang Dashen, Chen Tingjun, Jiang Hongtao, et al.Dynamic response characteristics of long petroleum pipelines extending along mountain ridge under strong earthquake[J].Bulletin of Geological Science and Technology, 2021,40(6):97-105.(in Chinese))
[2] Rajani B B, Robertson P K, Morgenstern N R.Simplified design methods for pipelines subject to transverse and longitudinal soil movements[J].Canadian Geotechnical Journal,1995,32(2): 309-323.
[3] 邓道明, 周新海, 申玉平.横向滑坡过程中管道的内力和变形计算[J].油气储运,1998(7):18-22, 4.(Deng Daoming, Zhou Xinhai, Shen Yuping.Calculation of internal force and deformation of buried pipeline under lateral landslide[J].Oil & Gas Storage and Transportation,1998(7):18-22, 4.(in Chinese))
[4] 王磊, 邓清禄.滑坡作用对输气管道危害的静力学分析[J].工程地质学报,2010(18):340-345.(Wang Lei, Deng Qinglu.Mechanical analysis on the safety of gas.transportingpipeline caused by landslide deformation[J].Journal of Engineering Geology,2010(18):340-345.(in Chinese))
[5] 吴锐, 梅永贵, 邓清禄, 等.滑坡作用下输气管道受力分析[J].建筑科学与工程学报,2014,31(3):105-111.(Wu Rui, Mei Yonggui, Deng Qinglu, et al.Stress analysis of buried gas pipeline under landslide load[J].Journal of Architecture and Civil Engineering, 2014,31(3):105-111.(in Chinese))
[6] 尚玉杰, 王殿龙, 闫生栋, 等.横向滑坡作用下埋地管道力学响应分析[J].安全与环境工程,2019,26(1):155-161.(Shang Yujie, Wang Dianlong, Yan Shengdong, et al.Mechanical response analysis of buried pipeline under the action of transverse landslide[J].Safety and Environmental Engineering,2019,26(1):155-161.(in Chinese))
[7] 王荣有, 张家铭, 王聪.横向滑坡作用下埋地管道静力学与数值模拟对比分析[J].科学技术与工程,2021,21(1):326-333.(Wang Rongyou, Zhang Jiaming, Wang Cong.Comparative analysis of statics and numerical simulation of buried pipeline under the action of lateral landslide[J].Science Technology and Engineering,2021,21(1):326-333.(in Chinese))
[8] 谢强, 王雄, 张建华, 等.不同滑坡形式下埋地管的纵向受力分析[J].地下空间与工程学报,2012,8(3):505-510.(Xie Qiang, Wang Xiong, Zhang Jianhua, et al.Longitudinal stress analysis of pipeline buried in two different forms of landslide[J].Chinese Journal of Underground Space and Engineering,2012,8(3):505-510.(in Chinese))
[9] 林冬, 雷宇, 许可方, 等.横向滑坡对管道的影响试验[J].石油学报,2011,32(4):728-732.(Lin Dong, Lei Yu, Xu Kefang, et al.An experiment on the effect of a transverse landslide on pipelines[J].Acta Petrolei Sinica,2011,32(4):728-732.(in Chinese))
[10] 牛文庆,郑静,吴红刚, 等.管道受横向滑坡影响的模型试验研究[J].铁道建筑,2015(6):117-120.(Niu Wenging, Zheng Jing, Wu Honggang, et al.Experimental study on effect of orthogonal landslide on pipe by model simulation[J].Railway Engineering,2015(6):117-120.(in Chinese))
[11] Liu P F, Zheng J Y, Zhang B J, et al.Failure analysis of natural gas buried X65 steel pipeline under deflection load using finite element method[J].Materials and Design, 2010,31(3):1384-1391.
[12] Han B, Wang Z, Zhao H, et al.Strain-based design for buried pipelines subjected to landslides[J].Petroleum Science, 2012(9): 236-241.
[13] Zhang J, Liang Z, Han C.Mechanicalbehavior analysis of the buried steel pipeline crossing landslide area[J].Journal of Pressure Vessel Technology, 2016,138(5):051702.
[14] 廖柠, 黄坤, 吴锦, 等.基于ABAQUS的穿越公路输气管道力学性状分析[J].中国安全生产科学技术,2017,13(5):61-67.(Liao Ning, Huang Kun, Wu Jin, et al.Analysis on mechanical properties of gas pipeline crossing highway based on ABAQUS[J].Journal of Safety Science and Technology,2017,13(5):61-67.(in Chinese))
[15] 苏爱军, 冯明权.滑坡稳定性传递系数计算法的改进[J].地质灾害与环境保护,2002(3):51-55.(Su Aijun, Feng Mingquan.Improving on transfer coefficient method applied to landslide stability analysis and landslide thrust value calculation[J].Journal of Geological Hazards and Environment Preservation,2002(3):51-55.(in Chinese))
[16] 夏桂云, 李传习.考虑剪切变形影响的杆系结构理论与应用[M].北京:人民交通出版社, 2008.(Xia Guiyun, Li Chuanxi.Frame structure theory including shear deformation effect and its applications[M].Beijing: China Communications Press, 2008.(in Chinese))
[17] Itasca Consulting Group.FLAC3D 5.0 manual[M].Minneapolis, USA: Itasca Consulting Group,2012.
[18] 江晓禹, 龚晖.材料力学[M].成都:西南交通大学出版社,2009.(Jiang Xiaoyu, Gong Hui.Mechanics of materials[M].Chengdu: Southwest Jiaotong University Press, 2009.(in Chinese))
[19] 人民共和国住房和城乡建设部, 输油管道工程设计规范(GB50253—2014)[S].北京:中国计划出版社, 2014.(Ministry of Housing and Urban-Rural Development of the People's Republic of China.Code for design of oil transportation pipeline engineering (GB 50253—2014)[S].Beijing:China Planning Press,2014.(in Chinese))
