Analysis of dynamic characteristics of prestressed concrete continuous box-girder bridge structure
ZHANG Yifei
ZHU Yanzhi
TIAN Guanghui
JIU Yongzhi
GU Yangyang
Abstract：In order to study the influence of vehicle load on the dynamic characteristics of prestressed concrete continuous box-girder bridge,this paper uses a finite element software to establish a vehicle-bridge coupling model to analyze the influence of vehicle speed and vehicle load on the mid-section dis-placement and dynamic impact coefficient of prestressed concrete continuous box-girder bridge.The results show that the dynamic characteristics of bridge is affected by vehicle speed and vehicle load,and there is no obvious linear relationship between vehicle speed and bridge dynamic characteristics.With the increase of vehicle speed,the displacement of mid-span section first decreases and then in-creases,while the impact coefficient of the bridge first increases and then decreases.The mid-span displacement and bridge impact coefficient decrease linearly with the increase of vehicle load.The re-search results will provide some technical reference for the study of dynamic characteristics of bridges under multi-condition vehicle loads.
Keywords：bridge engineeringvehicle loadvehicle-bridge couplingdynamic property
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 23-27 )