Over-height truck collisions with railway bridges:attenuation of damage using crash beams

作     者：Dan Xu Xinxing Yuan Ali Irmak Ozdagli Marlon Agüero Roya Nasimi Tao Wang Fernando Moreu Dan Xu;Xinxing Yuan;Ali Irmak Ozdagli;Marlon Agüero;Roya Nasimi;Tao Wang;Fernando Moreu

作者机构：Key Laboratory of Earthquake Engineering and Engineering VibrationInstitute of Engineering MechanicsChina EarthquakeAdministrationSanhe 065201China Department of CivilConstruction and Environmental EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA Courtesy AppointmentDepartment of Electrical and Computer EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA Courtesy AppointmentDepartment of Mechanical EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA 

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

年 卷 期：2022年第21卷第1期

页      面：237-252页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0818[工学-地质资源与地质工程] 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：Scientific Research Fund of Institute of Engineering Mechanics,China Earthquake Administration under Grant Nos.2016A06 and 2017A02 the National Natural Science Foundation of China under Grant Nos.51678538 and 51878630 the Transportation Consortium of South-Central States(TRANSET) US Department of Transportation(USDOT),Project No.17STUNM02 

主　　题：railway bridge over-height truck impact attenuation crash beam dynamic displacement scaled model 

摘      要：Railway bridges are susceptible to over-height truck collisions and to address this issue,it is necessary to attenuate the effect of these impacts to ensure the safety of transportation *** study experimentally investigates the effectiveness of crash beams as a cushioning mechanism for railway bridges against ***-height truck and railway bridge impact events were simulated in a 1:5 scale *** design parameters such as the stiffness of the crash beam and the bridge supports were scaled to evaluate different levels of *** experiments were conducted with five configurations consisting of four different types of crash beams and one no-crash beam *** results show that crash beams attenuate bridge total peak dynamic displacement responses between 14.5%and 35.7%,depending on the intensity of the impact and crash beam *** addition,the results show that the average effectiveness in attenuating residual deformation for all four crash beams ranges from 43.03%to 83.40%.Finally,various designs and their effectiveness against lateral impacts with different speeds are *** overall scope of this research is to provide objective information about the design of crash beams for railway bridges based on their response to over-height truck collisions at various speeds.