《Natural Gas and Oil》

News

Source Journal for Chinese S&T Papers and Citation2014/9/27
Announcement for Academic Dishonorable Behaviors2014/5/23

more>>

Internet Workstation

Edition and Publication

Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

Links

Your Position ：Home->Past Journals Catalog->2013 Vol.6

View Full-text

Stress Analysis of Unburied Gas Pipelines Laid in High Slopes

Author of the article:

Author's Workplace：

Key Words：High slope; Unburied; Gas pipeline; Stress analysis; CAESAR II

Abstract：Gas pipelines laid in high slopes are prone to overstressing or large displacement. Based on the software CAESAR II, a pipeline stress analysis model is established by 3D beam model combined with Stress Intensification Factor. In the model, pipe-soil friction and upward support force are considered as the soil constraint. Conducted is comparison among three different simplified boundary Conditions and determined is the fixed constraint boundary with horizontal extension segment on both sides of the slope pipelines. Combined with four loading conditions, such as working condition of water pressure test and so on and based on the ASME B31.8, stress check methods are proposed for various working conditions and analysis and calculation results show that the most dangerous stress position is located at the convergence between the top of the upward pipeline and the slope base platform and the largest displacement occurs probably at the top of the longest and steepest slope, which proves that the stress calculation model and check methods are feasible.