城市高架桥梁抗震性能分析  

Seismic Performance Analysis of Urban Viaduct

作　　者：苏骥 SU Ji(Nanjing Branch of Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Nanjing,Jiangsu 210000,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司南京分公司,江苏南京210000

出　　处：《黑龙江交通科技》2024年第9期117-121,共5页Communications Science and Technology Heilongjiang

摘　　要：为分析城市高架桥梁抗震性能,以沂河路高架桥梁为分析对象,综合考虑结构安全与经济性,采用有限元软件建立不同跨径组合,不同支座类型及抗震体系桥梁的空间模型进行抗震分析。研究结果表明:对跨径组合为3孔30 m一联的标准联采用中墩双固定支座,对中跨66 m的大跨径连续梁采用摩擦摆支座的设计方法能够很好地满足地震工况下结构的安全性要求。The seismic performance of urban viaduct was studied by considering the Yihe Road viaduct bridge as a case,with a comprehensive consideration of structural safety and economy.Spatial models for different span combinations,support types,and seismic systems were established using finite element software for seismic analysis.The results demonstrated that the design approach of setting double fixed supports at the middle pier for a span combination of three 30 meter standard spans and setting friction pendulum supports for large span continuous beams with a middle span of 66 meters effectively meet the structural safety requirements under seismic conditions.

关 键 词：抗震性能 双固定支座 摩擦摆支座 空间模型 

分 类 号：U442[建筑科学—桥梁与隧道工程]