【摘要】 海上采油平台的垂直立管频繁受到波浪力的作用。波浪荷载沿垂直立管的分布是不规则的,这对工程中用有限元法分析立管强度进行等效波浪结点力的计算带来困难。本文采用三结点等参单元,模拟垂直立管单元上波浪荷载的高斯分布曲线,然后用高斯积分法计算了横向等效波浪结点力。有关的算例表明,本文的计算方法是可靠的,可为海上工程结构物的设计提供理论依据。更多还原

【Abstract】 In the riser system of offshore platform, the wave force acts frequently on the riser. The irregular distribution of the wave load along the erect riser makes the computation of equivalent wave nodal force difficult when applying Finite Element Method to analyze riser s strength. In this paper, three- node isoparametric element is adopted to model Gauss distribution cruve of wave load in erect riser element, then the lateral equivalent wave nodal force is calculated by Gauss integral method. Through the related example, it is shown that the computational method of this paper is reliable, which can provide theoretical basis for designing offshore engineering structure.更多还原