کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6972996 | 1453265 | 2016 | 44 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Response of the buried steel pipeline caused by perilous rock impact: Parametric study
ترجمه فارسی عنوان
پاسخ خط لوله فولادی ذخیره شده ناشی از تاثیر سنگ های خطرناک: مطالعه پارامتری
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
One of threatening buried steel pipeline in bad geological regions is collapsed rock. Buckling behavior of a buried pipeline impacted by a perilous rock with spherical shape was investigated by numerical simulation. Effects of pipeline parameters (internal pressure, wall thickness, diameter, buried depth) and perilous rock parameters (impact velocity, radius, eccentric distance) on deformation, stress and strain of the buried pipeline were discussed. Buckling behaviors of the buried pipeline under transverse and longitudinal inclined impacts also were studied. The results show that cross section shape of the buried pipeline becomes to an oval, then to a peach shape, and finally to a crescent shape or gourd shape in the process of rock's impact. The deformation process of a buried pipeline can be divided into four stages. They are elastic deformation stage, buckling stage, elastic recovery stage and final deformation stage. Buckling mode of no-pressure pipeline is more serious than the pressure pipeline. The impact dent's length and depth increase with the decreasing of buried depth, wall thickness and internal pressure. But they increase with the increasing of impact velocity, perilous rock's radius and pipeline's diameter. The maximum stress and plastic strain decrease with the increasing of buried depth and wall thickness. Under rock's eccentric impact, impact dent trends to one side. Stress and plastic deformation decrease with the eccentric distance increases. Under rock's transverse and longitudinal inclined impacts, cross section shape of the buried pipeline is an oval shape when the incidence angle α â¤Â 45°, and there is no plastic deformation. When α > 45°, impact dent appears. Buckling is more serious with the incidence angle increases. Destructive powers of transverse and longitudinal inclined impacts are smaller than the vertical impact.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Loss Prevention in the Process Industries - Volume 43, September 2016, Pages 385-396
Journal: Journal of Loss Prevention in the Process Industries - Volume 43, September 2016, Pages 385-396
نویسندگان
Jie Zhang, Zheng Liang, Ding Feng, Chuan Zhang, Chengyu Xia, Yiliu Tu,