桥梁顶升施工有限元分析  

FINITE ELEMENT ANALYSIS OF BRIDGE JACKING CONSTRUCTION

作　　者：宋丹 张纪刚[2] 洪德红 来家可 滕琳 李帅 SONG Dan;ZHANG Jigang;HONG Dehong;LAI Jiake;无(School of Civil Engineering,Qilu Institute of Technology,Jinan 250220,China;School of Civil Engineering,Qingdao University of Technology,Shandong Qingdao 266520,China;Hubei Chutian Lianfa Road and Bridge Maintenance Co.,Ltd.,Wuhan 430000,China;China Construction No.8 Bureau Development Company Industrial Development Division,Jinan 250014,China)

机构地区：[1]齐鲁理工学院土木工程学院,济南250220 [2]青岛理工大学土木工程学院,山东青岛266520 [3]湖北楚天联发路桥养护有限公司,武汉430000 [4]中建八局城市发展公司产业发展事业部,济南250014

出　　处：《低温建筑技术》2024年第5期128-132,共5页Low Temperature Architecture Technology

基　　金：山东省自然科学基金面上项目(ZR2022ME188)。

摘　　要：山东省青岛市辽阳路桥是一座预应力混凝土连续箱梁桥。为实现与新建桥梁的衔接,现需该桥的46#桥梁顶升655~1218mm。利用ANSYS软件建立46#桥梁有限元计算模型,分析其在同步顶升工况、千斤顶失效工况下,顶升至最高点时所需的最大顶升力以及箱梁桥和分配梁的受力和变形情况,以确保桥梁顶升过程中的安全性。结果表明桥梁在两类工况下,均具有较大的安全储备,可保障桥梁顶升过程中的安全可行性。研究成果可为其他同类型桥梁顶升施工工程提供案例参考。Liaoyang Road Bridge in Qingdao is a prestressed concrete continuous box girder bridge.In order to real⁃ize the connection with the new bridge,the 46#bridge of the bridge is required to lift 655~1218 mm.ANSYS soft⁃ware is used to establish the finite element calculation model of 46#bridge,and we analyze the maximum lifting force required when jacking to the highest point and the stress and deformation of box girder bridge and distribution beam under synchronous jacking conditions and jack failure conditions,so as to ensure the safety of bridge during jacking.The results show that the bridge has a large safety reserve under the two types of working conditions,which can en⁃sure the safety and feasibility of the bridge during the jacking process.The research results may provide the refer⁃ence for other similar bridge jacking construction projects.

关 键 词：预应力混凝土连续箱梁桥 桥梁顶升 顶升误差 应力分析 

分 类 号：TU745[建筑科学—建筑技术科学]