长江科学院院报2018，Vol.35Issue(5)：125-129,141,6.DOI:10.11988/ckyyb.20161172
基于车流统计的预应力混凝土连续梁桥疲劳性能评价
Fatigue Performance Evaluation for Prestressed Concrete Continuous Beam Bridge Based on Statistics of Traffic Flow
摘要
Abstract
To investigate into the fatigue damage of a concrete continuous beam bridge in service under vehicle load,we built models of standard fatigue vehicles according to traffic flow statistics,and subsequently established a finite element model of the bridge.By calculating the fatigue damage of concrete and prestressed tendons at different longitudinal sections along the bridge under standard three-axle vehicles running through the whole bridge deck,we found that the fatigue damage of prestressed reinforcement at the first span floor is the largest. Moreover,under the present traffic flow of standard fatigue vehicles with ordinary spacings,the fatigue damage of bridge of the first span floor is small,with no fatigue failure.关键词
桥梁工程/疲劳损伤/名义应力法/预应力混凝土连续梁桥/超重车Key words
bridge engineering/fatigue damage/nominal stress method/prestressed concrete continuous-girder bridge/overload vehicles分类
交通工程引用本文复制引用
薛刚,孙树宝,孙晓燕..基于车流统计的预应力混凝土连续梁桥疲劳性能评价[J].长江科学院院报,2018,35(5):125-129,141,6.基金项目
内蒙古自治区自然科学基金项目(2015MS0552) （2015MS0552）
