本文主要研究了导管架海洋平台结构系统优化设计的理论与数值计算方法。
The theoretical and numerical methods of structural design optimization for offshore platforms are studied in this thesis.
考虑约束条件边界的模糊性，建立了导管架海洋平台结构模糊优化设计模型。
The model of structural fuzzy optimum design of offshore jacket platforms is established considering the fuzziness of constrained boundary condition.
把导管架海洋平台看作钢框架结构，并把多目标优化设计方法用于结构的设计中。
A multi objective design is proposed by assuming the jacket platform as a steel frame structure.
导管架海洋平台是一种空间结构体系，在多维地震动作用下的反应计算较为复杂。
The jacket offshore platform is a spatial structure, and the computation of its response to the multiple seismic excitations is complicated.
把导管架海洋平台看作钢框架结构，并把多目标优化设计方法用于其结构的抗震设计中。
Jacket platform was assumed as steel frame structure and multi-objective design method was performed.
基于统一设计变量方法，实现了导管架海洋平台在动冰载荷作用下的截面和形状动力优化设计。
Based on the unified design variable method, the shape and sizing optimization design of jacket platform with dynamic ice-load is investigated.
本文把导管架海洋平台看作钢框架结构，考虑了桩—土—结构的动力相互作用，并把优化方法用于结构的抗震设计中。
Jacket platform was assumed as steel frame structure and the pile-soil-structure interaction was considered. Optimum method was applied to aseismic design of structure.
建立了地震作用下导管架海洋平台结构优化的数学模型，把导管架海洋平台看作钢框架结构，并把优化方法用于结构的抗震设计中。
Jacket platform was assumed as steel frame structure and optimum design method was performed. Total weight of the structure was selected to be optimal objectives.
因此，海洋平台的性能，特别是近海导管架平台在地震等动力荷载作用下的的安全性能受到越来越广泛的关注。
The performances of ocean platform structures, especially the performances of offshore jacket platforms under earthquakes and other dynamic loads are having been paid more and more attention.
系统服务于火焰数控切管机切割海上平台导管架管件，系统输入为海洋平台的结构单线图，系统输出为导管架切割单件图。
The input of the system is the structural single line graph of the sea platform and the output is the single-piece graph of the jacket's cutting.
所评定的三项焊接工艺可以直接用于海洋平台导管架建造，焊后允许不进行热处理。
Thus three welding crafts can be used in the fabrication of offshore jacket structure directly and the offshore jackets need no heat treatment after welding.
海洋导管架型平台是一个复杂的非线性空间结构。
The offshore jacket platform is a complex nonlinear space structure.
海洋平台作为一个大型空间桁架结构，导管架是其中的关键部件。
Offshore platform is a large spatial truss structure, whose key part is jacket.
海洋平台作为一个大型空间桁架结构，导管架是其中的关键部件。
Offshore platform is a large spatial truss structure, whose key part is jacket.
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