摘要
通过对西安铁路局管内2座采用相同图号的1-64 m简支上承式钢桁梁的现场动力试验,分别从桥梁动力学、钢梁孔跨、墩梁耦合及有限元模拟计算等方面开展深入的研究,比较确定钢桁梁在不同工作环境下的横竖向刚度、自振频率、阻尼比、强振频率、纵横向位移、多阶振型和墩梁耦合工作等桥梁健康指标参数,谨为科学合理的整治桥梁病害提供客观真实的技术建议。
This paper,through the field dynamic test of two same type of simply supported 1-64m deck truss steel girders under the administration of Xi'an Railway Bureau,researches the bridge dynamics,steel girder span arrangement,pier and girder coupling,finite element simulation calculation and other aspects separately and deeply.This paper also compares different working conditions and then determines the bridge health parameters such as the transverse and vertical stiffness,natural frequency,damping ratio,strong vibration frequency,longitudinal and vertical displacement,multi-order vibration mode,pier–girder coupling,etc.The purpose of this paper is to provide the objective and authentic technical advice with scientific and reasonable attitude for the treatment of the bridge diseases.
出处
《铁道标准设计》
北大核心
2012年第10期46-49,53,共5页
Railway Standard Design
关键词
既有铁路
上承式钢梁
试验研究
existing railway
deck truss steel girder
experimental study
