Structural response of the spiral-welded pipelines buried in different uniform soil types to the strike-slip fault

IF 4.8 Q2 ENERGY & FUELS
Mozhgan Asgarihajifirouz , Xiaoyu Dong , Hodjat Shiri
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引用次数: 0

Abstract

Buried steel pipelines, which are widely used in, often face the threat of Permanent Ground Deformations (PGD) caused by fault crossings. The structural response of the pipeline can be influenced by the pipe-trench-backfill interaction, resulting in various hoop strains, axial plastic strains, and consequently, formation of wrinkles at different locations in the fault zone. This paper investigates the structural response of spiral-welded pipelines at strike-slip fault crossings by incorporating the burial effects in a range of different soil materials. A dynamic explicit analysis is used to address the convergence issue commonly encountered in the analysis of post-buckling problems. The helix angles and the burial depth effects in different soil types and pipeline-ground interaction angles are examined. The study provides valuable insights into the influence of burial conditions and corresponding helix angle on the performance of spiral-welded pipelines in strike-slip faults.

埋设在不同均匀土壤类型中的螺旋焊接管道对走向滑动断层的结构响应
广泛使用的埋地钢质管道经常面临断层穿越引起的永久地面变形(PGD)的威胁。管道的结构响应会受到管道-沟槽-回填土相互作用的影响,从而产生各种环向应变和轴向塑性应变,进而在断层带的不同位置形成皱纹。本文研究了螺旋焊接管道在走向滑动断层穿越处的结构响应,并考虑了不同土壤材料的埋藏效应。采用动态显式分析来解决后屈曲问题分析中常见的收敛问题。研究了不同土壤类型中的螺旋角和埋深效应以及管道与地面的相互作用角。该研究就埋藏条件和相应的螺旋角对螺旋焊接管道在走向滑动断层中的性能影响提供了有价值的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
7.50
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