【摘要】 上海浦东国际机场T2航站楼结构为复杂大跨混合结构,采用NosaCAD2005有限元程序建立其结构分析模型。模型主要由非线性杆单元组成,包括梁、柱和二力杆单元,梁、柱采用三段变刚度杆模型,以受弯为主的梁单元截面弯矩-曲率关系采用二折线和三折线模型,柱和二力杆截面采用纤维模型。参照试验所得参数,选用模态和均匀加速度组合惯性力加载方式进行了弹塑性推覆分析,研究了该结构的变形、内力、破坏情况的发展历程,对该结构的抗震性能进行了评价。更多还原

【Abstract】 The T2 building of Shanghai Pudong International Airport is a complex long-span space hybrid structure.Using NosaCAD2005,the structural analysis model,mainly composed of beams,columns and trusses,was established.Beams and columns were combined with three different stiffness segments.For the beams mainly bearing moment,the bilinear and tri-linear moment curvature hysteretic curve was employed to simulate behavior of the nonlinear segments,while fiber section model was employed to simulate behavior of nonlinear segments of columns and trusses.With reference to parameters acquired from the experiment,the elasto-plastic pushover analysis was carried out under lateral inertial force,in which the acceleration distribution is composed of a modal vector and a uniform vector.Based on the analysis,the deformations,internal forces and damage patterns of the structure were investigated.The seismic resistance capacity of the structure was evaluated.更多还原