渤海固定平台非线性时程地震的抗震设计

从设计规范、设防标准、传统线性设计方法以及全新非线性设计方法等方面探讨结构抗震设计技术,以渤海某平台为实例使用全新非线性抗震设计方法开展结构抗震设计分析,计算结果表明:应用该时程非线性方法设计的导管架平台主腿节点及桩基础壁厚均可明显降低,应用该技术可实现渤海海域海洋平台结构设计中的安全性与经济性的统一.

Aseismic Design of Fixed Platform Based on Nonlinear Time Domain Seismic Technology in Bohai

The structural aseismic design technology was discussed from the aspects of design specification,fortification standard,traditional linear design method and new nonlinear design method.A new nonlinear aseismic design method was applied to design a fixed platform in Bohai sea area.The results showed that the main leg joints and the pile foundation wall thickness can be reduced obviously by the time domain nonlinear method,so as to realize the unity of structural safety and economy in the design phase of the offshore platform structure.