摘要
根据一座三跨预应力混凝土连续箱梁桥的悬臂施工过程,利用有限元法分析施工阶段预应力荷载产生的箱梁剪力滞效应.结果表明:在悬臂施工过程中,预应力钢束对箱梁产生正负剪力滞效应.
According to a structure of three-span prestressed concrete continuous box-girder bridge with single cell,finit analysis of the bridge is made in the process of cantilever cast-in-place construction and the shear lag effect of box-girder is analyzed under the load case of prestress.According to the results,the prestress tendon has both positive and negative shear lag effect on the box-girder in the process of cantilever construction.
出处
《湖北工业大学学报》
2010年第2期86-88,共3页
Journal of Hubei University of Technology
关键词
预应力
悬臂施工
剪力滞
箱梁
有限元
prestress
cantilever construction
shear lag
box-girder
finit element