摘要
以4跨一联跨线桥独柱墩改造工程为背景,结合现场跨线桥的结构特点及梁下空间,通过在独柱墩顶增设盖梁,将单支承改为多支承体系,加强结构抗扭转变形能力,以满足抗倾覆要求,同时通过外包钢筋混凝土增大原墩柱墩截面,满足在偏心受压作用下桥墩墩底截面极限承载力要求,实现独柱墩安全提升改造。
Based on the reconstruction project of single column pier of 4-span one connected overpass bridge,combined with the structural characteristics of the overpass bridge and the space under the beam,the single support is changed into a multi support system by adding a cap beam on the top of the single column pier,so as to strengthen the torsional deformation resistance of the structure to meet the anti overturning requirements.At the same time,the section of the original pier column pier is increased by wrapping reinforced concrete to meet the requirements of the ultimate bearing capacity of the section at the bottom of the pier under eccentric compression,Realize the safe lifting transformation of single column pier.
作者
梁彧
窦勇芝
LIANG Yu;DOU Yong-zhi(Liuzhou Municipal Facilities Maintenance and Management Office,Liuzhou 545005,China;Liuzhou OVM Structure Detection Technology Co.Ltd,Liuzhou 545005,China)
出处
《工程建设与设计》
2023年第3期144-146,共3页
Construction & Design for Engineering
关键词
独柱墩
跨线桥
增设盖梁
抗倾覆
single column pier
overpass bridge
additional bent cap
anti overturning
