CAJ | 학술논문

依据钢桥面板的受力特点，分析了它的疲劳特性，在原有的荷载频谱值的基础上，提出了更为精确的基于轴重频值谱的疲劳寿命评估方法。以压电式动态称重获取的贵州坝陵河大桥一周的车辆数据为样本，根据轴组类型对所测的车辆车轴进行分类，将车辆分为7种车型形式，并建立了3种轴型的轴载谱。依据所监测的数据，并结合正交异型钢桥面板的疲劳特性，推导得到了适宜分析钢桥面板疲劳的随机轴重谱。以面板与 U 肋连接处的疲劳细节为例，将轴重频值谱以及随机轴重频值谱作为输入，计算得到该细节处的应力谱以及剩余使用寿命。这一研究为钢桥面板的疲劳验算提供了更加准确的方法。
의거강교면판적수력특점，분석료타적피로특성，재원유적하재빈보치적기출상，제출료경위정학적기우축중빈치보적피로수명평고방법。이압전식동태칭중획취적귀주패릉하대교일주적차량수거위양본，근거축조류형대소측적차량차축진행분류，장차량분위7충차형형식，병건립료3충축형적축재보。의거소감측적수거，병결합정교이형강교면판적피로특성，추도득도료괄의분석강교면판피로적수궤축중보。이면판여 U 륵련접처적피로세절위례，장축중빈치보이급수궤축중빈치보작위수입，계산득도해세절처적응력보이급잉여사용수명。저일연구위강교면판적피로험산제공료경가준학적방법。
Based on the structure loading characteristics of steel deck,the article analyses its fa-tigue characteristics and proposes a more precise method for evaluating its fatigue life depending on the axle frequency value spectrum.According to the Guizhou Balinghe Bridge’s vehicle data gathered by pie-zoelectric WIM,the vehicle is classified into 7 models with the different axle group types,so the axle load spectrums about the 3 kinds of axle types is established.The random axle frequency value spectrum is de-veloped based on the WIM traffic data and the structure loading characteristics of steel deck.For the joint of the deck and U-rib as example,the research calculates its stress spectrum and the remaining service life with the input of axle frequency value spectrum and random axle value spectrum.This research pro-vides a more accurate method for the steel deck fatigue analysis.