CAJ | 학술논문

针对采油树管道计算其固有频率和模态振型，在此基础上分析其在波浪谱曲线激励下的振动情况。结果表明：在输油管道和转换通道末端是振动幅度最大的部位，主振方向为 x 方向；横向波浪谱对结构振动的影响远大于纵向波浪谱；生产主阀处的应力最大，输油管道上端弯头处的应变最大。通过增大管道直径和壁厚、减小弯头数量、增加管道支吊架等措施提高管道刚度，以达到减小管道振动的目的。
침대채유수관도계산기고유빈솔화모태진형，재차기출상분석기재파랑보곡선격려하적진동정황。결과표명：재수유관도화전환통도말단시진동폭도최대적부위，주진방향위 x 방향；횡향파랑보대결구진동적영향원대우종향파랑보；생산주벌처적응력최대，수유관도상단만두처적응변최대。통과증대관도직경화벽후、감소만두수량、증가관도지조가등조시제고관도강도，이체도감소관도진동적목적。
For pipelines of Christmas tree,the natural frequencies and modal shapes of pipelines were calculated,then,the response spectrum by the wave was calculated based on the result of the modal analysis.And the conclusion shows that the largest vibration amplitude happens on the end of pipeline,the main vibration direction is x direction,and the influence of transverse wave spec-trum is much greater than that of longitudinal wave,besides,the maximum stress occurs on the main valve,and the maximum strain happens on the upper elbow of the oil pipelines.The vibration can be reduced by enhancing the stiffness of the pipelines based on increasing the diameter and wall thickness of the pipes,reducing the number of elbows and installing pipe hangers.