中文摘要：

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。

英文摘要：

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.