哈尔滨松花江公路大桥动力特性试验  

Dynamic Characteristics Experiment of Songhuajiang Highway Large Bridge

作　　者：单炜[1] 王平[1] 张宏祥[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2005年第3期69-70,82,共3页Journal of Northeast Forestry University

摘　　要：通过对哈尔滨松花江公路大桥进行动力特性实测和利用有限元程序ANSYS进行了建模和计算分析,得到的实测值和理论计算值差别不大。并通过研究获得了大桥的固有频率、模态、阻尼比和在动力荷载作用下的冲击系数,了解了该桥在动载荷作用下的实际工作状态,从而判断该桥整体结构的安全承载能力和使用条件。The dynamic characteristics of Songhuajiang highway large bridge were measured, and modeling and calculation were conducted by ANSYS program. It revealed that the difference between measurement value and theoretical calculation value was not significant. In addition, the inherent frequency, mode, damp ratio and the impact coefficient under dynamic load were obtained, and the real work status of the bridge under dynamic load was found out. Therefore, the safe carrying capacity and the employed condition of the whole bridge structure could be estimated.

关 键 词：动力特性 动态响应 模态分析 中击系数 

分 类 号：U441[建筑科学—桥梁与隧道工程]