高矢跨比钢箱拱桥施工安全预报系统

发布时间：2018-03-10 12:31

本文选题：钢箱拱桥　切入点：施工控制　出处：《江苏科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着钢箱拱桥跨径增大，对钢箱拱桥施工技术要求更高，施工安全问题及成桥状态是否满足设计要求等成为研究的重点。钢箱拱桥整体翻转和提升施工是一种比较新的施工方法，该施工方法适合用于大矢跨比的钢箱拱桥。本文以内蒙古鄂尔多斯的伊克昭大桥为工程背景，对伊克昭大桥施工过程进行仿真计算，并用Visual Basic语言进行编程，建立钢箱拱桥施工安全预报系统，该系统为施工控制服务。本文主要工作如下： 1.介绍了钢拱桥的结构特点、施工方法。通过比较不同施工方法的特点，伊克昭大桥采用整体吊装法施工。 2.阐述国内外桥梁施工控制技术的发展概况和施工控制的主要方法，并提出国内在施工控制技术方面存在的一些不足之处。施工监控是施工控制中比较重要的一个环节，施工监控的依据、目标和精度，施工监控的思路和内容，施工监控的主要影响因素以及施工过程的分析方法。通过比较三种主要的施工过程分析方法，采用正装法对伊克昭大桥施工过程进行分析。 3.本文采用Midas/Civil有限元软件对伊克昭大桥钢箱拱肋吊装阶段进行仿真分析，，并对该拱肋吊装阶段的变形、应力和稳定性进行分析。并将分析所得结果整理成数据库。 4.以施工控制思想为理论指导，以伊克昭大桥为工程依托，采用VB语言编制钢箱拱桥施工安全预报系统，使得该预报系统实现查询和分析两大功能。一方面，对上述理论分析数据库中结果的查询；另一方面，对施工监测结果与理论分析结果进行比较。通过两个功能最终实现对桥梁结构安全进行预报。 5.为了验证上述施工安全预报系统符合施工监控思路，能够实现为施工控制服务的作用。采用已经施工的广州某大桥施工监控结果对该钢箱拱桥施工安全系统进行验证。
[Abstract]:With the increase of span of steel box arch bridge, the construction technology of steel box arch bridge is more demanding. The construction safety problem and whether the state of the completed bridge meets the design requirements become the focus of the research. The whole overturning and lifting construction of the steel box arch bridge is a relatively new construction method. This construction method is suitable for steel box arch bridge with large rise-to-span ratio. Taking the Ikezhao Bridge in Ordos, Inner Mongolia as the engineering background, the construction process of Ikezhao Bridge is simulated and calculated, and the construction process is programmed by Visual Basic language. The construction safety prediction system of steel box arch bridge is established, which serves the construction control. The main work of this paper is as follows:. 1. The structural characteristics and construction methods of steel arch bridge are introduced. By comparing the characteristics of different construction methods, Ikezhao Bridge is constructed by integral hoisting method. 2. The development situation of bridge construction control technology at home and abroad and the main methods of construction control are described, and some deficiencies in construction control technology in China are pointed out. Construction monitoring is an important link in construction control. The basis, target and precision of construction monitoring, the train of thought and content of construction monitoring, the main influencing factors of construction monitoring and the analysis method of construction process. The construction process of Ikezhao Bridge is analyzed by means of dress method. 3. In this paper, the Midas/Civil finite element software is used to simulate the hoisting stage of steel box arch rib of Ikezhao Bridge, and the deformation, stress and stability of the arch rib hoisting stage are analyzed, and the results are arranged into a database. 4. The construction safety prediction system of steel box arch bridge is compiled with VB language under the guidance of construction control theory and Ekezhao Bridge. On the one hand, the forecast system realizes two functions of query and analysis. On the other hand, the construction monitoring results are compared with the theoretical analysis results. Finally, the bridge structure safety prediction is realized through two functions. 5. In order to verify that the above construction safety prediction system accords with the construction monitoring idea and can serve for the construction control, the construction safety system of the steel box arch bridge is verified by using the construction monitoring results of a bridge in Guangzhou that has already been constructed.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4;U448.22

【参考文献】