基于图形流的预应力曲线刚构桥命令流自动生成技术

发布时间：2018-07-05 04:57

本文选题：曲线连续刚构 + 悬臂施工　；参考：《石家庄铁道大学》2014年硕士论文

【摘要】：预应力曲线连续刚构桥为广泛应用于桥梁建造的桥型之一，其构造和受力特性复杂于预应力直线连续刚构桥，常用的施工方法为挂篮悬臂施工。目前桥梁结构设计及施工计算常用的软件为MIDAS/civil、ANSYS、桥梁博士等，软件采用菜单或命令流模式完成预应力曲线连续刚构桥悬臂施工的仿真模拟，虽然可以有效的完成计算，但是模拟过程无法凸显桥梁结构和悬臂施工的工程特征，使预应力曲线连续刚构桥仿真计算存在建模效率较低的瓶颈。图形流技术是一种新的建模技术，其建模基础是功能图形对象，功能图形对象是具有自身属性特征的工程模型的子块。该技术通过功能图形对象的协同合作建立工程模型，将工程问题的求解转化成功能图形对象的创建、操作和推演过程，使工程问题求解和工程模型建立过程凸显实际工程特征，进而减少模型建立过程中不必要的机械式操作，使工程问题求解清晰、简单、便捷、高效。本文在深入研究预应力曲线连续刚构桥的结构、受力、预应力钢束布置、支座约束、挂篮悬臂施工过程规划等特征的基础上，总结了以图形流技术建立预应力曲线连续刚构桥工程模型的流程。以路桥施工专家系统为开发平台，以DELPHI可视化编程平台为开发工具，开发了建立模型过程中用到的功能图形对象，然后通过这些功能图形对象的创建、操作、推演实现了预应力曲线连续刚构桥的悬臂施工模拟，，再利用命令流接口技术实现悬臂施工模拟模型向MIDAS命令流的转化。最后通过工程实例验证图形流技术的可行性和高效率。
[Abstract]:Prestressed curved continuous rigid frame bridge is one of the bridge types widely used in bridge construction. Its structure and mechanical characteristics are complicated by prestressed linear continuous rigid frame bridge. The common construction method is hanging basket cantilever construction. At present, the commonly used software for bridge structure design and construction calculation are midas / civili ANSYS, bridge doctor, etc. The software uses menu or command flow mode to simulate the cantilever construction of prestressed curved continuous rigid frame bridge, although it can effectively complete the calculation. However, the simulation process can not highlight the engineering characteristics of bridge structure and cantilever construction, which makes the simulation calculation of prestressed curve continuous rigid frame bridge have the bottleneck of low modeling efficiency. Graphic flow technology is a new modeling technology, which is based on functional graphics object, which is a sub-block of engineering model with its own attributes. In this technology, the engineering model is established through the collaborative cooperation of the functional graphics object, and the solution of the engineering problem is transformed into the process of creating, operating and deducing the functional graphics object, so that the engineering problem solving and the engineering model building process highlight the actual engineering characteristics. Furthermore, it reduces the unnecessary mechanical operation in the process of modeling, and makes the solution of engineering problems clear, simple, convenient and efficient. In this paper, the characteristics of prestressed curved continuous rigid frame bridge, such as structure, force, prestressed steel bundle arrangement, support constraint, cantilever construction process planning, etc., are studied in depth. This paper summarizes the process of establishing the engineering model of prestressed curve continuous rigid frame bridge by graphic flow technology. Taking the road and bridge construction expert system as the development platform and Delphi visual programming platform as the development tool, this paper develops the functional graphics objects used in the process of building the model, and then through the creation and operation of these functional graphics objects, The cantilever construction simulation of prestressed curved continuous rigid frame bridge is realized, and the transfer of cantilever construction simulation model to Midas command flow is realized by using command flow interface technology. Finally, the feasibility and high efficiency of graphic flow technology are verified by an engineering example.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.23

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