Effect of vehicle weight on natural frequencies of bridges measured from traffic-induced vibration

作     者：Chul-Young Kim Dae-Sung Jung Nam-Sik Kim Soon-Duck Kwon Maria Q.Feng 

作者机构：Dept.of Civil & Envir.Eng.Myongji UniversityKorea Professor Dept.of Civil & Envir.Eng.Myongji UniversityKorea Research Associate Hyundai Institute of Construction TechnologyHyundai E&C Co.Ltd.Korea Chief Researcher Dept.of Civil EngineeringChonbuk National UniversityKorea Professor Dept.of Civil & Envir.Eng.University of CaliforniaIrvineCaliforniaUSA Professor 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2003年第2卷第1期

页      面：109-116页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：the Ministry of Construction and Transportation Korea Highway Corporation and Hyundai E&C Co.Ltd.under Project No.R&D/970003-2 

主　　题：ambient vibration test traffic induced vibration vehicle mass suspension bridge short-span bridge dynamic characteristics natural frequency 

摘      要：Recently,ambient vibration test(AVT)is widely used tu estimate dynamic characteristics of large civil struc- *** characteristics ean be affected by various envirnnmental factors such as humidity,intensity of wind,and *** these environmental conditions,tire mass of vehicles may change the measured valnes when traffic-in- duced vibration is used as a source of AVT tor *** effect of vehicle mass on dynamic characteristics is investigated through traffic-induced vibration tests on three bridges;(1)three-span suspension bridge(128m+404m+128m),(2) five-span continuous steel box girder bridge(59m+3@ 95m+59m),(3)simply supported plate girder bridge(46m). Acceleration histories of each measurement location under normal traffic are recorded for 30 minutes at *** recor- ded histories are divided into individual vibrations and are combined into two groups aceording to the level of vibration;one by heavy vehicles such as trucks and buses and the other by light vehicles such as passenger *** processing of the two groups of signals shows that,for the middle and long-span bridges,the difference can be hardly detected,but,for the short span bridges whose mass is relatively small,the measured natural frequencies can change up to 5.4%.