预应力混凝土连续刚构桥振动测试与动力特性分析  

The Vibration Test and Dynamic Characteristics Analysis on the Prestressed Concrete Continuous Rigid Frame Bridge

作　　者：李冰[1] 徐行军 LI Bing;XU Xingjun(School of Civil Engineering,Fujian Chuanzheng Communications College,Fuzhou,Fujian 350007)

机构地区：[1]福建船政交通职业学院土木工程学院,福建福州350007

出　　处：《武夷学院学报》2023年第6期58-63,共6页Journal of Wuyi University

基　　金：福建省交通运输科技项目(202031)。

摘　　要：对某预应力钢筋混凝土连续刚结构桥进行动力特性分析,阐述待测试预应力钢筋混凝土连续刚结构桥目前的实际情况,在对测试桥梁进行振动测试的基础上,构建与桥梁目前情况相吻合的有限元模型。通过对动力特性相关参数的实测值与计算值的比较来评价钢筋混凝土连续刚构桥在使用荷载下的工作性能,从而判断该桥梁构件承载力是否能够满足设计要求。测试桥梁分析可得,利用实测值与计算值的对比分析可体现混凝土连续性刚结构动力特征,同时亦可促进有限元模型进一步完善,从而为类似桥梁健康评价与维修提供参考。The dynamic characteristics of a prestressed reinforced concrete continuous rigid structure bridge are analyzed.This paper describes the actual situation of the prestressed reinforced concrete continuous rigid structure bridge to be tested.On the basis of the vibration test of the bridge,the finite element model which is consistent with the current situation of the bridge is constructed.Finally,the working performance of reinforced concrete continuous rigid frame bridge under service load is evaluated by comparing the measured and calculated parameters of dynamic characteristics,so as to judge whether the bearing capacity of the bridge members can meet the design requirements.According to the test bridge analysis,the dynamic characteristics of continuous concrete rigid structure can be reflected by comparing the measured and calculated values,and the finite element model can be further improved,so as to provide reference for the health evaluation and maintenance of similar bridges.

关 键 词：预应力混凝土连续刚构桥 有限元模型 振动测试 动力分析 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]