摘要
以某简支梁桥为例,研究分析了车道荷载的调整与桥梁结构弯矩、剪力效应值的变化,并建立有限元模型,分析其变化影响规律.研究结果表明:车道荷载的调整和桥梁计算跨径密切相关,且弯矩与剪力值的变化规律不完全一致.车道荷载的调整对小跨径桥梁的弯矩值和剪力值提高比例影响较大,计算跨径为5 m时,弯矩值提高43.64%,剪力值提高40.22%.
Talcingone simply supported girder bridge as example,we discussed the relationship between laneloading adjustment and bridge structure bending moment,shearing force effect value,finding out the change regularityby setting up a finite element model.The research results indicate that lane loading adjustment is closely related tobridge calculated span,what is more,the change regularity of bending moment and shearing force is not the same.Lane loading adjustment has a great influence on small span bridges,when the calculated span length is 5 m,thebending moment and shearing force value will increase 43.64% and 40.22% respectively.
出处
《河南科学》
2016年第1期66-69,共4页
Henan Science
基金
河南省教育厅科学技术研究重点项目(14B560035)
宁波市桥梁技术科技创新团队(2014B81003)
关键词
车道荷载
弯矩
剪力
计算跨径
lane loading
bending moment
shearing force
calculated span
