摘要
为探究连续刚构预应力混凝土梁桥的动力特性和抗震性能,文中以某大跨径连续刚构桥为背景,利用MidasCivil建立空间有限元模型,通过多重Ritz向量法计算桥梁的动力特性,在此基础上,进行E1、E2地震反应谱分析,得到桥在地震作用下的动力响应,并进一步研究了墩间联系梁的道数对双肢薄壁墩连续刚构桥的抗震性能的影响,得到这类桥墩形式的地震响应规律,为同类桥墩形式的抗震设计提供参考。
A spatial finite element model of large-span continuous rigid frame bridge is established by Midas Civil software to study the dynamic characteristics and seismic performance.The dynamic characteristics of the bridge are calculated using the multiple Ritz vector method,based on which,E1 and E2 seismic response spectra are analyzed to obtain the dynamic response of the bridge under earthquake action.The influence of the number of connecting beams between piers on the seismic performance of double leg thin-walled pier continuous rigid frame bridges is studied,and the seismic response law of this type of bridge pier form is obtained,providing the reference for the seis⁃mic design of similar bridge pier forms.
作者
姜洪伟
JIANG Hongwei(Shandong Provincial Highway Designing&Consult Co.,Ltd.,Jinan 250102,China)
出处
《低温建筑技术》
2023年第6期68-72,共5页
Low Temperature Architecture Technology
关键词
连续刚构桥
双肢薄壁墩
动力特性
反应谱
抗震性能
continuous rigid frame bridge
thin-walled pier with two limbs
dynamic characteristics
response spec⁃trum
seismic performance
