海底埋设高温管道隆起屈曲数值模拟研究  

Numerical simulation research on upheaval buckling of high temperature submarine buried pipeline

作　　者：车小玉[1] 段梦兰[1,2] 曾霞光[2] 谭双妮[2] 庞熠骞[1] 

机构地区：[1]复旦大学力学与工程科学系,上海200433 [2]中国石油大学(北京)机械与储运工程学院,北京102249

出　　处：《海洋工程》2013年第5期103-111,共9页The Ocean Engineering

基　　金：国家重大基础研究发展计划资助项目(2011CB013702);国家自然科学基金资助项目(50979113)

摘　　要：高温是引发海底管道整体屈曲失效的主要因素,而海床上存在的局部隆起使得高温埋设管道更加容易发生隆起屈曲。这里重点研究海底埋设高温管道发生隆起屈曲的临界温度载荷及其影响因素,提出了一种简化的数值模拟分析模型,同已有的相关实验结果比较表明,本方法可以较好地近似计算高温管道的隆起屈曲。基于本方法开展的参数分析,得到了管道覆土高度、混凝土配重层厚度、海床不平整对海底高温管道发生隆起屈曲的影响趋势。High temperature is the principal factor for buckling behavior of submarine pipeline. It is more easy to have upheaval buck- ling when the seabed has a prop for the pipeline. This paper focuses on the high-temperature submarine buried pipeline＇ s critical tem- perature and the influencing elements when the upheaval buckling occurs. A simple numerical model is presented in this paper, and comparison with the relative experiment result shows the model which is a better approximate method can be used to analyze the upheav- al buckling issues. This paper points out the impacting trends of key parameters such as soil fill height, concrete thickness, and irregu- lar trench.

关 键 词：海底管道 隆起屈曲 临界温度 参数分析 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]