中缅管道隧道坍塌工况下的管段应力应变分析  

Stress and deformation analysis of pipe under collapse comn China Burma pipeline tunnel

作　　者：王文明[1] 陈钱荣 于达[1] 朱霄霄[1] 张仕民[1] 

机构地区：[1]中国石油大学(北京)机械与储运学院,北京102249

出　　处：《中国科技论文》2016年第21期2462-2466,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(51309237);高等学校博士学科点专项科研基金资助项目(20130007120008)

摘　　要：中缅管道在澜沧江段需穿越岩鹰山隧道及江顶寺隧道,隧道所处地质条件复杂,若发生坍塌,会造成管线的变形甚至失效。为保障管道安全运行,对隧道坍塌时的占压载荷与冲击等效载荷进行分析,建立ABAQUS有限元模型,模拟了隧道坍塌工况下成品油、原油与天然气管道的受力状态。通过分析不同坍塌厚度、管道内压对管道的影响,得到了管道应力应变的变化情况。模拟结果表明:随着坍塌岩土厚度的增大,管道的应力也随之增大,求得了成品油管道、原油管道、天然气管道的安全载荷临界坍塌量,同时管道的变形率也随之线性增加;管道内压增加会使得管道应力增加,但却使得管道变形率减小。China Burma pipelines in Lancang River need to pass through Yanyingshan and Jiangdingsi tunnels, where the geolog- ical conditions are complex that may cause collapse of tunnel, resulting in the pipeline deformation or even failure. To solve the former safety hazards, this article simulates the pipelines under different collapsed rock thickness and different inside pressure by ABAQUS software, which can obtain the stress distributions and deformations in the pipes. The results show that with the in- crease of collapsed rock thickness, the pressure inside pipes also increases until reaching the yield stress of the pipes. The deform- ations rate of the pipes increase linearly at the same time. With increasing the internal pressure, the internal stress also increases, while the deformations rates of the pipes decreases.

关 键 词：油气储运工程 隧道坍塌 管道应力 管道变形 椭圆度 

分 类 号：TE973[石油与天然气工程—石油机械设备]