水下生产系统“M”型跨接管结构在地震作用下的动力响应分析

Dynamic Responses of a 'M' Type Jumper in a Sub- sea Production Facility under Earthquake

由于跨接管在水下会受到地震波作用,并且地震发生时跨接管将受到地震引起的水动力的作用,因此采用有限元法计及地震波沿水平和垂向两个方向的载荷输入,考虑地震作用下跨接管的动水作用效应、深海水压、端部位移以及跨接管内部油温的影响,进行地震作用下的跨接管动力响应分析。结构动力响应分析表明,地震下动水作用力、端部位移、深海水压以及跨接管内部油温对跨接管的响应幅值影响较大,研究地震载荷作用下跨接管动力响应应计及上述因素。

A jumper pipe underwater will be affected by seismic waves, when an earthquake happens, it will also be affected by hydrodynamic force caused by the earthquake. The seismic waves＂ load inputs in both horizontal and vertical directions is calculated by using finite element method and takes into account the jumper pipe＇s dynamic water pressure, deep sea pressure, end displacement and its internal oil temperature so as to analyze its dynamic response under an earthquake action. Different models are analyzed and compared with. It is shown that hydrodynamic forces, end displacement, water pressure of deep sea and oil temperature have great influence on the magnitude of the response..