基于CATIA的心墙堆石坝施工仿真建模理论与技术

发布时间：2019-05-16 16:27

【摘要】：心墙堆石坝施工往往投资巨大,施工情况复杂,涉及到土石方的规划、施工填筑作业、场内交通运输状况、开挖和运输机械的合理配置以及施工导流等。心墙堆石坝施工同时也受到天气等外部自然环境的影响,施工过程具有较强的随机性和动态性,难以通过建立简单的数学模型进行分析,也很难通过简单的二维图纸或图表数据描述复杂的施工状况,以及及时发现堆石坝施工过程中的冲突等问题。因此,如何将施工仿真技术与三维可视化相结合,将施工过程更全面、真实、形象地展示出来,形成动态的堆石坝施工过程仿真,用以辅助堆石坝施工管理,从而为堆石坝施工组织设计、进度控制、项目管理提供决策依据,是十分必要的。心墙堆石坝的施工管理水平对于提高堆石坝的建设水平有很大的影响,堆石坝的施工动态仿真能为堆石坝的施工管理提供有力支持。目前堆石坝施工动态仿真研究多是基于施工仿真结果构建三维可视化系统,但是系统中三维模型不易被修改,且提供的施工信息量有限。针对这些问题,本文将CATIA引入到心墙堆石坝施工仿真建模中,提出了以CATIA为基础的堆石坝施工动态仿真4D模型的构架。首先在CATIA平台上建立水利水电工程的施工场景,关键技术包括骨架设计技术、参数化技术、知识工程技术和设计过程模块化技术等,并采用参数化技术建立堆石坝三维模型,实现了三维模型的快速修改更新;同时,利用二次开发技术建立了具有扩展属性的堆石坝三维模型,这不仅提供了施工场景,还提供了大坝的形体参数、道路节点信息等施工信息;最后以某心墙堆石坝为例,建立了基于CATIA的心墙堆石坝施工仿真4D模型及系统平台,实现了堆石坝施工过程的三维动态表达;利用3D XML为数据转换技术实现了基于B/S的堆石坝施工4D模型的远程交互。为堆石坝施工管理提供重要理论与技术支持。
[Abstract]:The construction of core wall rockfill dam is often with huge investment and complex construction situation, which involves earthwork planning, construction filling operation, transportation condition in the site, reasonable allocation of excavation and transportation machinery and construction diversion, etc. At the same time, the construction of core wall rockfill dam is also affected by weather and other external natural environment. The construction process has strong randomness and dynamics, so it is difficult to analyze by establishing a simple mathematical model. It is also difficult to describe the complex construction condition by simple two-dimensional drawing or chart data, as well as to find out the conflict in the construction process of rockfill dam in time. Therefore, how to combine the construction simulation technology with 3D visualization, show the construction process more comprehensively, truthfully and vividly, and form a dynamic simulation of the construction process of rockfill dam, which can be used to assist the construction management of rockfill dam. Therefore, it is very necessary to provide decision-making basis for construction organization design, schedule control and project management of rockfill dam. The construction management level of the core wall rockfill dam has a great influence on improving the construction level of the rockfill dam. The construction dynamic simulation of the rockfill dam can provide strong support for the construction management of the rockfill dam. At present, most of the research on dynamic simulation of rockfill dam construction is based on the results of construction simulation to construct three-dimensional visualization system, but the three-dimensional model in the system is not easy to be modified, and the construction information provided is limited. In order to solve these problems, this paper introduces CATIA into the construction simulation modeling of core wall rockfill dam, and puts forward the framework of dynamic simulation 4D model of rockfill dam construction based on CATIA. Firstly, the construction scene of water conservancy and hydropower project is established on CATIA platform, the key technologies include skeleton design technology, parametric technology, knowledge engineering technology and design process modularization technology, and the three-dimensional model of rockfill dam is established by using parametric technology. The rapid modification and update of 3D model is realized. At the same time, the three-dimensional model of rockfill dam with extended attributes is established by using the secondary development technology, which not only provides the construction scene, but also provides the construction information such as the shape parameters of the dam, road joint information and so on. Finally, taking a core wall rockfill dam as an example, the 4D model and system platform of core wall rockfill dam construction simulation based on CATIA are established, and the three-dimensional dynamic expression of rockfill dam construction process is realized. The remote interaction of 4D model of rockfill dam construction based on B / S is realized by using 3D XML as data conversion technology. It provides important theoretical and technical support for the construction management of rockfill dam.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV641.41

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