CAJ | 학술논문

考虑了初始几何缺陷对管道屈曲临界载荷的影响,基于经典热屈曲理论,推导了平坦海床上裸铺管道横向屈曲临界载荷的理论公式,给出了无限远处管道轴向力的计算公式及临界温度的计算公式.建立了平坦海床上裸铺管道的非线性有限元模型,并将有限元结果与解析结果进行了对比,验证了解析公式的合理性.
고필료초시궤하결함대관도굴곡림계재하적영향,기우경전열굴곡이론,추도료평탄해상상라포관도횡향굴곡림계재하적이론공식,급출료무한원처관도축향력적계산공식급림계온도적계산공식.건립료평탄해상상라포관도적비선성유한원모형,병장유한원결과여해석결과진행료대비,험증료해석공식적합이성.
Based on the theory of thermal buckling,and considering the effect of initially imperfect geometry on lateral buckling of subsea pipeline installed on the seabed,analytical solutions to critical axial forces in buckling segment and away from buckling segment as well as critical temperature are deduced.The nonlinear finite element model to study lateral buckling of subsea pipeline is established.The comparisons between analytical and numerical results validate analytical solutions.