【摘要】 在地震活动区铺设海底管道必须考虑地震荷载的作用。通过在水下振动台模拟海底悬跨管道完成的动力模型试验,根据试验结果分析了管道的悬跨长度、悬跨高度、支撑情况和管内运输不同物质等因素对海底悬跨管道的动力反应的影响。并根据Morison方程建立的海底悬跨管道动力控制方程对试验结果进行了有限元数值模拟,计算结果与试验结果符合得较好。更多还原

【Abstract】 Seismic loading should be taken into account while constructing submarine pipelines in the seismic active zones. Dynamic model experiments simulating free spanning submarine pipeline were performed on a underwater shaking table. The factors including span, proximity from the seabed, support conditions at pipeline ends and different transmitting materials in the pipe are considered to analyze the dynamic response of the free spanning submarine pipelines based on the experimental results. The dynamic control equation of free spanning submarine pipeline is derived from the Morison equation and numerical analysis is carried out using finite element method. The results are shown to be in good agreement with experimental data.更多还原