摘要
以一在建连续刚构弯桥为分析对象,对高墩大跨连续刚构桥弯桥在曲率半径变化时的动力特性进行研究,得出不同曲率半径下最大悬臂状态和全桥状态的自振周期与振型。通过对比,得出了不同曲率半径对桥梁动力特性的影响规律。采用反应谱法对结构进行地震反应分析,为刚构弯桥的施工设计优化提供了理论依据。
Taking the continuous rigid frame curved bridge under construction as the analysis object,a research on the dynamic characteristics of continuous rigid frame curved bridge with large span and high-rise piers under the condition of changed curvature radius is conducted, and the maximum cantilever under different curvature radius and the natural vibration period and mode of the whole bridge is obtained, the effects on the bridge＇s dynamic characteristics are studied under different curvature radius using response spectrum method, the seismic response of the structure is analyzed.A theoretical basis for design and improvement of the curved rigid frame bridge is provided.
出处
《交通科学与工程》
2014年第1期39-43,共5页
Journal of Transport Science and Engineering
关键词
刚构弯桥
动力特性
曲率半径
周期跟振型
反应谱
rigid frame curved bridge
dynamic characteristics
curvature radius
cycle and vibration mode
response spectrum
