【摘要】 宁江松花江特大桥主桥结构采用四塔单索面矮塔斜拉桥结构,在抗震设计过程中采用E1和E2二水平设防,E1地震作用下采用多振型反应谱法,E2地震作用下采用非线性时程法进行抗震分析,可以为类似工程设计提供参考。更多还原

【Abstract】 Ningjiang Songhua River bridge locates in a seismic intensity Ⅷ zone in Songyuan City,Jilin Province.The structure of main bridge is with four towers and single cable plane cablestayed bridge with low towers structure.In the process of seismic design,El and E2 two levels of fortification are adopted.The earthquake recurrence interval of El and E2 is set as100 years and 2 000 years,respectively.The multi mode response spectrum method for El earthquake,and the nonlinear time-history method for E2 earthquake are employed in seismic response analysis.Our results provide a reference for the design of similar project.更多还原