摘要
上层市政道路下层轨道交通的双层高架桥已越来越广泛地运用于城市交通中,但是由于其结构的复杂性,地震震害表现出与一般高架桥不同的特点,需要对其抗震性能进行深入研究。基于国内某工程实例,比较分析了门式墩与独柱墩双层高架桥的抗震性能,包括计算模型的建立、动力特性分析、反应谱分析及非线性时程分析,得出了若干结论,可为今后类似工程抗震设计提供借鉴。
The double-layer elevated bridge of municipal road at upper layer and rail traffic at lower layer has been more and more widely applied for the urban traffic. Owing to its structural complexity, the seismic damage has the characteristic different from the general elevated bridges. It is required to study its seismic performance. Based on an engineering case of China, the article compares and analyzes the seismic performances of the portal pier and single-column pier double-layer elevated bridges including the establishment of calculation model, analysis of dynamic characteristic, analysis of response spectrum and analysis of nonlinear time history. The several given conclusions can be referred for the seismic design of the similar projects in the future.
出处
《城市道桥与防洪》
2015年第5期88-91,13,共4页
Urban Roads Bridges & Flood Control
关键词
双层高架桥
动力特性
地震反应
抗震性能
double-layer elevated bridge,dynamic characteristic,seismic response,seismic performance
