【作者】 何雨微；

【导师】 何雄君； 陈光新；

【作者基本信息】 武汉理工大学 ， 船舶与海洋工程， 2002， 硕士

【摘要】 本文以荆州长江公路大桥主跨500米的混凝土斜拉桥施工为应用背景，通过分析目前国内外大跨度混凝土斜拉桥施工控制现状，结合该桥施工实践，运用平面杆系有限元计算理论对大桥250个工艺进行正装计算，采用先进测试设备和仪器，利用计算机快速分析处理技术对现场监测系统收集的数据进行误差分析，系用卡尔曼滤波法、最小二乘法和灰色理论GM(1，1)进行结构真实状态的识别和后期预测，通过科学高效的监控管理机制的运行和监控实践，探索并建立了一套适合于大跨度混凝土斜拉桥的施工监测监控体系。 论文详实地介绍了大跨度混凝土斜拉桥施工监测监控的关键项目与指标、测试仪器、测点布设、测试方法与过程(与施工工艺密切联系)、数据收集与数据处理、误差分析与调整方法、监控精度与控制原则、监控运行机制管理方法、监测监控记录表格以及荆州长江公路大桥北汊通航孔桥施工控制的成果与结论。通过课题研究与实桥运用，荆州长江公路大桥斜拉桥施工过程各状态和成桥恒载状态下，斜拉索索力、主梁线形、主梁关键截面应变、索塔塔顶水平偏位等关键项目的施工控制结果均满足设计期望值的要求，满足桥梁施工范围的要求，大桥主梁线形流畅，斜拉索、主梁和索塔三大体系的受力状态合理，桥梁结构安全可靠，大桥的监测监控取得了圆满成功，并为该桥营运阶段的长期监测监控奠定了良好的基础。本课题研究与实桥应用，对大跨度斜拉桥施工监测监控做出了有益的探索，取得了较好的社会经济效益。更多还原

【Abstract】 This paper has studied and set up a supervision and control system based on the backing item of Jinzhou Yangtze River Bridge with main span of 500m, by analyzing the development of construction control of cable-stayed bridges in china and abroad, foreword calculation of 250 work cases of plane bar FEM, adoption of advanced equipment and devices, quick analysis of gathered data research of karemen filtering method, least square and gray model GM (1,1) into the identification of the real state and precuts and effective manage mechanism.It has also pounded the keys, devices, disposition of surveyed spots, measure method and procedures, data gathering and process (relation with construction workmanship) , error analysis and adjustment, control precision and rules, mechanism and method of control, tables of records, results and discussion. After completion, the Bridge has good behaviors in dead loads state, cable forces, shape style of main beam, stress and strain of concerned sections, displacements of the tower top, which assure the reasonable state of cables, main girder and towers, and safe under running, demonstrate supervision. The Studies of this paper is a beneficial porker to the cable-stayed bridges with long span, which will bring about a good social or economic benefit.更多还原