Effects of Vehicular Loading on Seismic Load of Highway Bridges

车辆荷载对公路桥梁地震荷载的影响

• 批准号: 60550322
• 负责人: KAMEDA Hiroyuki
• 金额: $ 1.22万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550322/
• 关键词: seismic design; seismic load; load combination; bridge design; 動的解析

Dynamic seismic analysis of bridge-vehicle system was performed, from which the dynamic effects of vehicle loading on seismic load of highway bridges were studied. Major conclusions derived from this study are as follows.(1) Dynamic models of a bridge-vehicle system has been developed. On the basis of eigen-analysis and frequency-response analysis, the existence of "resonance modes" and "dynamic reduction modes" has been made clear. The former are cases where the vehicle loading tend to increase the seismic load of bridges, and the latter, vise-versa.(2) From the time history analysis of seismic response of bridge-vehicle system, details of the physical process have been clarified regarding the development of the resonance modes or the vibration reduction modes.(3) Maximum values of major response quantities (displacement, angle of rotation, bending moment, and shearing force) have been obtained, and their characteristics were discussed with emphasis on the effects of vehicle loading relative to the seismic response of bridge alone.(4) Amplification/reduction effects of vehicle loading on seismic loads of highway bridges have been discussed quantitatively, and simple physical parameters have been proposed as descriptors of these effects.

进行了桥梁车系统的动态地震分析，从中研究了车辆载荷对高速公路桥的地震负荷的动态影响。 （1）已经开发了桥梁系统的动态模型。根据本元分析和频率反应分析，已经明确了“共振模式”和“动态还原模式”的存在。前者是车辆载荷倾向于增加桥梁的地震载荷，而后者则是Vise-vise-c。（2）桥梁系统的地震反应的时间历史分析，已经阐明了物理过程的细节（3）已经获得了主要响应量的最大值（位移，旋转角度，弯矩和剪切力）的最大值，并讨论了它们的特性，重点介绍了效果，并讨论了它们的特性（4）已定量讨论了相对于单独桥梁的地震反应。（4）车辆载荷对高速公路桥的地震载荷的扩增/还原影响，并已提出简单的物理参数作为这些影响的描述。

项目成果

HAYASHI, Taizo: "Dynamic Effects of Vehicle Loading on Seismic Load of Highway Bridges" Kyoto University, Earthquake Engineering Research Report. 87-1. (1987)

HAYASHI, Taizo：“车辆荷载对公路桥梁地震荷载的动态影响”京都大学，地震工程研究报告。

林泰三: 土木学会第41回年次学術講演会講演概要集. 975-976 (1986)

Taizo Hayashi：第 41 届日本土木工程师学会学术会议摘要 975-976（1986）。

林泰三: 京大耐震研究報告. No.87-1. (1987)

林泰三：京都大学地震研究报告第 87-1 号（1987 年）。

HAYASHI, Taizo: "Analysis of Seismic Loads on Highway Bridges with Consideration on Dynamic Effects of Vehicle Surcharge" Proc. of Annual Convention, JSCE. No. 41. 975-976 (1986)

HAYASHI, Taizo：“考虑车辆附加费动态效应的公路桥梁地震荷载分析”Proc。