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基于纤维模型的PERFORM-3D软件实现了复杂结构的弹塑性时程分析并进行构件变形性能评估.针对常规岛主厂房结构的复杂性和特殊性,有必要建立整体模型进行弹塑性时程分析以正确评估其抗震性能.分析表明,基于纤维模型的整体结构弹塑性分析法是一种高效可行的方法,不但宏观上得到结构整体响应,而且能微观上得到构件内力及变形和纤维的应力及应变.通过对宁德核电常规岛主厂房弹塑性分析的工程实例,得到其整体结构响应、构件的变形及结构能量耗散情况.对电厂重要结构采用基于PERFORM-3D的弹塑性分析,有利于将目前电厂结构设计从常规抗震设计向国际先进的基于性能抗震设计过渡.
The PERFORM-3D software based on the fiber model realizes the elasto-plastic time-history analysis of the complex structure and evaluates the deformation performance of the component.For the complexity and particularity of the structure of the conventional island master plant, it is necessary to establish the overall model for elasto-plastic time history analysis The results show that the elasto-plastic analysis of the whole structure based on fiber model is an efficient and feasible method, which can not only obtain the overall response of the structure macroscopically but also can get the internal forces and deformations of the members and the stress and strain of the fibers microscopically Through the engineering examples of the elasto-plastic analysis of the conventional island main plant of Ningde Nuclear Power Plant, the overall structural response, component deformation and energy dissipation of the structure are obtained.Using the PERFORM-3D-based elasto-plastic analysis for the important structure of the power plant, Power plant structural design from the conventional seismic design to the international advanced performance-based seismic design transition.