不利补偿条件下长距离穿越管道的应力分析及安装设计
Pipeline Stress Analysis and Installation Design in Long-distance Pipeline Crossing under Unfavorable Stress Compensation Condition
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- DOI:
- 作者:
- 毕光辉1, 李兵兵1, 韩桂武2, 陈文备3
BI Guang-hui1, LI Bing-bing1, HAN Gui-wu2
- 作者单位:
- 中国石油天然气管道工程有限公司 河北廊坊 065000
China Petroleum Pipeline Engineering Co., Ltd.
- 关键词:
- 盾构隧道;管道穿越;应力补偿;ANSYS软件;CAESAR II软件
shield tunnel;pipeline crossing;stress compensation;software ANSYS;software CAESAR II
- 摘要:
- 西气东输二线管道九江长江盾构穿越，由于始发井、接收井井深不同，导致管道荷载效应向一端集中。采用ANSYS和CAESAR II有限元软件对管道进行应力分析表明，传统的在两岸竖井外设置锚固法兰和锚固墩的方案不能满足规范要求。为此提出了3个解决方案：北岸接收井地面抬高、隧道内固定支座、井外管道应力补偿。计算表明，3个方案都能满足规范要求，其中井外管道应力补偿方案最优。实施第三个方案后，历经两年多的管道运行监控量测数据表明，本工程的管道补偿设计是安全可靠的。
In the construction of Jiujiang shield tunneling crossing the Changjiang River, which is the partial engineering of the Second West to East Gas Pipeline, the pipeline load effect concentrates to one side of the pipeline crossing section due to the depth difference between the launching shaft and the receiving shaft. The pipeline stress analysis with the FEA software ANSYS and CAESAR II shows that the conventional scheme of setting anchor flanges and anchor piers at the outsides of the both shafts can not meet code requirement. Therefore, three schemes of pipeline stress compensation are put forward, i.e. increasing ground height of north receiving shaft, setting fixed supports in the tunnel and putting stress compensation on the pipeline outside shaft. The calculations indicate that all three schemes meet code requirement, and the last scheme is optimum. The inspection and monitoring data got in two years after the implementation of the third scheme prove that the pipeline stress compensation design is safe and reliable.2013,6(6): 30-33 收稿日期：2013-3-26DOI：10.3969/j.issn.l001-2206.2013.06.007作者简介：毕光辉(1980-)，男，安徽淮北人，工程师，2006年毕业于兰州交通大学，现从事油气管道穿跨越设计研究工作。参考文献：
[1]GB 50423-2007，油气输送管道穿越工程设计规范[S].
[2]API SPEC SL-2007，管线钢管标准[S].
[3]潘越，赖华宴.管道常用补偿器的安装力法[J].石油工程建设2003,29(4):22-26.