大跨径斜拉桁架桥拆除关键技术研究  

Research on key technologies of long-span cable-stayed truss bridge demolition

作　　者：邱加样 Qiu Jiayang(Ninghua County Construction Engineering Quality and Safety Service Center,Sanming Fujian 365400,China)

机构地区：[1]福建省宁化县住建局建设工程质量安全服务中心,福建三明365400

出　　处：《山西建筑》2024年第4期139-141,共3页Shanxi Architecture

摘　　要：为了研究大跨径斜拉桁架桥的拆除施工工艺和结构行为控制方法,以某大跨径斜拉桁架桥拆除为研究背景,制定了针对性的方案比选并最终确定最优化施工方案,充分考虑桥梁拆除重建施工和拆除施工的关系,发挥栈桥作为桥梁拆除的平台和新建的通道的双重作用,分析了斜拉桁架桥的受力机理,并建立空间有限元模型模拟大跨径斜拉桁架桥结构的力学效应,其研究可供同类工程项目参考借鉴。In order to study the demolition construction technology and structural behavior control method of long-span cable-stayed truss bridge,the demolition of a long-span cable-stayed truss bridge was studied,in this paper,the author has drawn up the pertinent scheme comparison and selection and finally determined the optimal construction scheme,fully considered the relationship between the bridge demolition and reconstruction construction and the demolition construction,and brought into play the double role of the trestle bridge as the bridge demolition platform and the newly-built passageway,this paper analyzes the acceptance mechanism of cable-stayed truss bridge,and establishes a space finite element model to simulate the mechanical effect of long-span cable-stayed truss bridge.

关 键 词：混凝土下承式桁架桥 桥梁拆除 仿真模型 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]