摘要
以某波形钢腹板钢-混组合梁桥为工程依托,采用有限元分析软件MIDAS FEA建立全施工阶段精细化实体模型。基于数值模型分析数据和现场实测数据,得到了不同施工阶段主梁典型截面的应力值与成桥状态主梁各截面的应力值,对比分析了RW新型异步施工法与传统悬臂施工法下主梁的应力。研究表明:波形钢腹板钢-混组合梁连续刚构桥在采用RW异步施工过程中,主梁顶板应力更小,腹板与底板应力更大。在成桥阶段主梁中跨正应力的变化幅值更小,整体结构受力相对更合理。
Supported by a steel-concrete composite beam bridge with corrugated steel webs,a refined solid model of the whole construction stage was established by using the finite element analysis software FEA.Based on the data of numerical model analysis and field measurement,the stress values of the typical section of the main beam in different construction stages and the stress values of each section of the main beam in the completed state were obtained.The stress values of the main beam under the RW new asynchronous construction method and the traditional cantilever construction method were compared and analyzed.The results showed that during the RW asynchronous construction of the continuous rigid frame bridge with steel-concrete composite beams with corrugated steel webs,the roof stress of the main beam is smaller,and the web and floor stress are larger.In the stage of bridge completion,the variation amplitude of normal stress in the middle span of the main girder is smaller,and the stress of the whole structure is more reasonable.
作者
韩珠峰
Han Zhufeng(College of Civil and Architecture Engineering Guilin University of Technology,541004,China)
出处
《特种结构》
2020年第4期107-110,共4页
Special Structures
关键词
波形钢腹板
RW异步施工
有限元法
Corrugated steel web
RW asynchronous construction
Finite element method
