摘要
分析大型液化天然气LNG全容罐的混凝土穹顶结构受力特性。根据已有工程实例,采用有限元分析软件ANSYS建立大型预应力混凝土LNG全容罐的外罐实体模型。方案设计中考虑多种影响穹顶结构应力及变形的因素,包括外罐直径、穹顶曲率半径以及穹顶厚度。通过计算具有不同几何尺寸的LNG储罐,并对比分析其应力及变形结果,得到各因素对储罐穹顶应力及变形影响的最优状态。研究成果可为大型LNG储罐结构的设计提供一定参考,并为我国今后引进和自主设计大型LNG储罐提供一些优化设计建议。
The mechanical behavior of large pre-stressed concrete full containment LNG tank roof was analyzed.According to the existing project,the physical model of large pre-stressed concrete full containment LNG tank is established with finite element method（FEM）.The geometry factors implicating the stress and deformation of the roof were considered during the phase of project design,including external tank diameter,curvature radius of the roof and the thickness of roof.By calculating the LNG tanks with different dimensions and contrasting the results,the optimal states of the geometry factors on stress and deformation are obtained,which provides suggestions on designing the large LNG tanks and lays a foundation for China＇s independent design of large-size LNG tanks.
出处
《工业建筑》
CSCD
北大核心
2012年第4期78-81,98,共5页
Industrial Construction
