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Research on the Optimal Crossing Angle of Buried Continuous Pipeline Crossing Fault
MEI Wei, SHA Bin, ZHOU Yun, GU Shi-xiang, HUO Yu-guo, DU Wen-qi
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Research on the Optimal Crossing Angle of Buried Continuous Pipeline Crossing Fault
In this paper， the finite element model （FEM） of large-diameter buried Q235C continuous pipeline crossing fault is constructed by the finite element software ABAQUS. The optimal crossing angle under normal fault， reverse fault and strike-slip fault is investigated based on the strain failure criteria. What′s more， the influence of the crossing angle on the maximum axial strain and the failure length of the buried pipeline is also studied. The results indicate that normal fault displacement will cause large axial tensile strain in the pipeline and the crossing angle has negligible effect on the maximum axial tensile strain of the pipeline， while pipeline passing through reverse fault is mainly subjected to compression and the crossing angle has a significant influence on the maximum axial compressive strain of the pipeline. As for the pipeline crossing strike-slip fault， pipelines are prone to failure due to tension when the crossing angle is less than 90 degrees and pipelines are subjected to comparatively larger compressive stress when the crossing angle is greater than 90 degrees. The influences of crossing angle on the maximum axial strain and the failure length of the buried pipeline under different buried depths are similar. The crossing angle between the pipeline and the fault is recommended to be 75 degrees to 105 degrees under the normal and reverse faults and 75 degrees to 90 degrees under the strike-slip fault.
fault displacement / buried pipeline / numerical simulation / crossing angle {{custom_keyword}} /
Tab.1 Soil parameters表1 土体参数表 |
| 土体类型 | 弹性模量/MPa | 内聚力/kPa | 泊松比 | 摩擦角/（°） | 密度/（kg·m-3） |
|---|---|---|---|---|---|
| 黏土 | 16 | 30 | 0.35 | 17 | 1 850 |
Fig.4 Axial strain envelope of pipeline with different crossing angles under normal fault图4 不同管线与正断层交角管道轴向应变包络图 |
Fig.7 Maximum axial strain of pipeline under different crossing angles图7 不同管线与断层交角管道轴向最大应变 |
Fig.9 Maximum axial strain of pipeline with different crossing angles under different buried depth图9 不同管线与断层交角管道轴向最大应变 |
| 1 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 2 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 3 |
2_suppl
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 4 |
舒亚俐. 既有给排水管线的震害及管道抗震能力关键问题综合分析［J］. 城市道桥与防洪， 2013（3）：111-114.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 5 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 6 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 7 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 8 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 9 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 10 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 11 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 12 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 13 |
王滨. 断层作用下埋地钢质管道反应分析方法研究［D］. 辽宁大连：大连理工大学， 2011.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 14 |
刘爱文. 基于壳模型的埋地管线抗震分析［D］. 北京：中国地震局地球物理研究所， 2002.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 15 |
刘学杰，孙绍平. 地下管道穿越断层的应变设计方法［J］. 特种结构， 2005（2）：81-85.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 16 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 17 |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 18 |
张素灵，许建东，曹华明， 等. 地震断层作用对地下输油（气）管道破坏的分析［J］. 地震地质， 2001，23（3）：432-438.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 19 |
闫相祯，张立松，杨秀娟. 管道穿越地震断层管土耦合大变形壳模型的应变响应规律研究［J］. 土木工程学报， 2010，43（8）：132-139.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 20 |
杨汗青，郭恩栋，赵宇，等. 管道穿越断层最佳交叉角度研究［J］. 世界地震工程， 2012，28（4）：11-16.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 21 |
中华人民共和国国家标准. 钢结构设计标准： GB 50017-2017 ［S］. 北京：中国建筑工业出版社， 2017.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| 22 |
中华人民共和国天然气行业标准. 油气输送管道线路工程抗震设计规范： GB/T 50470-2017 ［S］. 北京：中国计划出版社， 2017.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
| {{custom_ref.label}} |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
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Fig.1 Finite element model of the pipe-soil systemFig.2 Stress-strain curve of Q235C［21］
Tab.1 Soil parametersFig.3 Maximum axial strain evolution of pipeline under different fault typesFig.4 Axial strain envelope of pipeline with different crossing angles under normal faultFig.5 Axial strain envelope of pipeline with different crossing angles under reverse faultFig.6 Axial strain envelope of pipeline with different crossing angles under strike-slip faultFig.7 Maximum axial strain of pipeline under different crossing anglesFig.8 Failure length of pipeline under different crossing anglesFig.9 Maximum axial strain of pipeline with different crossing angles under different buried depthFig.10 Failure length of pipeline with different crossing angles under different buried depth
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