摘要
波形钢腹板不能抵抗轴向力作用,波形钢腹板PC组合箱梁的剪力滞效应与PC箱梁不同。依托一箱九室波形钢腹板PC组合连续箱梁桥,建立了有限元模型,分析了荷载作用下混凝土顶底板的剪力滞效应。结果表明,波形钢腹板PC组合箱梁顶、底板均具有正剪力滞效应,顶板剪力滞更为明显;在支点具有横隔梁构造的情况下,箱梁跨中截面剪力滞较大,在设计时需要给予注意。
Corrugated steel webs can＇t resist the axial force, and shear lag effect of composite box-girder with corrugated steel webs is different from that of PC box-girder. Aimed at one PC continuous composite box-girder bridge with corrugated steel webs, the finite element model of the bridge is built, and the shear lag effects on concrete roof and floor plane are analyzed, whose bridge is loaded. The results show that concrete roof and floor plane both have positive shear lag effect, and the shear lag effect on roof planes is larger than that of floor plane. When end diaphragms are set, the shear lag effect of midspan section is remarkable, so that should be considered during bridge design.
出处
《工程抗震与加固改造》
北大核心
2015年第3期55-60,共6页
Earthquake Resistant Engineering and Retrofitting
基金
江苏省高校自然科学基金项目(14KJB560002)
常州工学院校级科研基金项目(YN1314)
关键词
连续梁
组合箱梁
桥梁工程
波形钢腹板
剪力滞
continuous girder
composite box-girder
bridge engineering
corrugated steel web
shear lag
