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

作　　者：毕光辉[1] 李兵兵[1] 韩桂武[1] 陈文备[1] 

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《石油工程建设》2013年第6期30-32,8,共3页Petroleum Engineering Construction

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.

关 键 词：盾构隧道 管道穿越 应力补偿 ANSYS软件 CAESAR II软件 

分 类 号：TE973[石油与天然气工程—石油机械设备]