【摘要】 以某悬挑环形廊桥项目为研究对象,开展现场静载试验,测量各工况下结构挠度、斜拉索索力及塔柱底截面应力等桥梁静力参数,并建立有限元模型进行对比分析,评估该桥结构安全性。通过改变桥塔结构形式、索区高度和桥塔高度等结构设计参数,分析各设计参数对结构静力性能的影响。结果表明,该桥结构受力和工作性能均满足安全使用要求,桥塔结构形式对结构静力性能影响不大,索区高度和桥塔高度应作为结构设计敏感参数。更多还原

【Abstract】 Taking a cantilevered circular corridor bridge project as the research object, on-site static load tests are carried out to measure the bridge static parameters such as structural deflection, stay cable force and column bottom section stress under various working conditions, and a finite element model is established for comparative analysis to evaluate the structural safety of the bridge. By changing the structural design parameters of the bridge tower structure, the height of the cable area and the height of the bridge tower, the influence of design parameters on the static performance of the structure are analyzed. The results show that the stress and working performance of the bridge structure can meet the requirements of safe use. The structure of the bridge tower has little effect on the static performance of the structure, and the height of the cable area and the height of the bridge tower should be the sensitive parameters of the structure design.更多还原