【摘要】 基于逐步增量弹塑性时程方法,选择了10条地震波对火电厂主厂房框排架结构进行非线性时程分析,得到了相关指标的IDA曲线簇,并进行统计分析,最终得到了以概率为基础的框排架各层以及整体IDA曲线,以此对抗震性能进行评价.主厂房框排架结构抗震能力具有较大的富余度,但煤斗大梁处是结构的薄弱环节,设计时应注意加强.更多还原

【Abstract】 the main powerhouse belongs to frame-bent structure style,is of irregular shape,complicated force paths.In strong earthquake,it easily deforms and even collapses to cause much damage.Therefore,the seismic capability must be known.According to incremental dynamical analysis method,10 earthquake waves are chosen in nonlinear time-history analysis of frame-bent structure.Through statistical analysis of IDA curves obtained,the IDA curve based on the probability of each floor and the whole structure can be obtained to make a judgment for the performance.Seismic capability of main powerhouse is more than demand,but its coal scuttle beam is vulnerable,strengthening is needed in design process.更多还原