本文利用ADINA非线性分析有限元程序，对低碳钢管道环焊缝接头焊接残余应力进行计算。
In this paper, the residual welding stresses in a low carbon steel girth butt welded pipe are calculated with a nonlinear finite element code ADINA.
建立了埋地输油管道三维梁单元有限元应力应变计算力学模型，并给出了求解方法。
A calculating model of finite element method with three-dimensional beam element for subsurface pipeline was established.
本文在分析了已收集到的世界各国埋地管道地震应力计算公式的基础上，提出了合理的计算公式。
The paper, based on a theoretical analysis of the seismic stress computation formulas for buried pipelines of various countries, introduces some reasonable formulas.
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