摘要
针对T梁配双柱式桥墩的多跨连续梁桥上部构造的特点,分别建立了精细模型、梁格模型和单梁模型进行对比分析,分别研究了三种建模方式对不同桥墩高度的结构动力特性的影响和地震响应的影响,研究表明:对10 m、20 m、30 m墩高的梁桥模型,在不同的场地地震输入作用下,采用单梁模型计算的误差是较小的,可以达到建模方便简单而计算精度又能满足工程需要的结果。
Aiming at the characteristics of the superstructure of multi-span continuous beam bridge of T-beam with double-column pier, the refined model, grillage model and single-beam model are established for comparison and analysis. This paper studies the influences of three modeling modes on the structural dynamic properties of the different pier heights and on the earthquake response. The study shows that the calculation error of single beam model for the bridge model of 10-m, 20-m and 30-m pier heights is smaller under the action of earthquake input in the different sites. And the results of modeling are simply and accurate, and can meet the engineering requirements.
出处
《城市道桥与防洪》
2018年第12期89-92,共4页
Urban Roads Bridges & Flood Control
关键词
建模方式
地震反应
数值模拟
modeling mode
earthquake response
numerical simulation
