【作者】 刘奎建；

【导师】 钟登华；

【作者基本信息】 天津大学 ， 水工结构工程， 2004， 硕士

【摘要】 向家坝水电站地下厂房系统由于单机容量大，洞室布置集中、跨度大、边墙高，施工工序多，相互干扰大，施工过程中需要考虑的因素众多，复杂程度很高，仅依靠设计人员采用传统的方法分析计算，难以得到优选的施工机械设备配套，难以制定合理的施工进度计划和施工组织设计方案。本文采用全新的动态可视化仿真思想，融面向对象的仿真建模技术、循环网络仿真技术、动态仿真技术、网络计划分析与优化技术、基于GIS的三维可视化技术于一体，进行向家坝地下厂房系统施工仿真与优化研究。主要研究工作和研究成果如下：（1）对向家坝地下厂房施工系统进行分解与协调，从层次化、模块化的建模思路出发，全面描述了向家坝地下厂房系统施工仿真建模过程，给出了模型参数的划分原则与确定方法，保证了模型参数的有效性。（2）深入研究了向家坝地下厂房系统施工仿真与进度优化，实现了施工机械设备配套方案的自动寻优，探讨了考虑工序间依赖关系的资源优化方法，获得了合理的施工工期、优化的施工进度、施工强度以及施工关键路线等重要参数。（3）提出了基于仿真的柔性网络计划分析方法，突破了传统的PERT对工序持续时间的一些假定，进行了向家坝地下厂房系统施工完工概率分析，较好的描述了施工进度计划的不确定性，为施工工期的论证分析提供更好的依据。（4）利用GIS强大的图形图像处理技术，把复杂的地下厂房系统施工过程用动态的画面形象地描绘出来，实现了基于GIS的向家坝地下厂房系统施工过程三维动态可视化，为全面、快速掌握整个施工过程提供了一个有效手段。（5）针对向家坝地下厂房系统施工特性，紧密配合其工程施工组织设计，研制开发了向家坝地下厂房系统施工仿真与优化软件ESAS-XJB，为进行复杂的地下厂房系统施工研究提供了强有力的分析工具。更多还原

【Abstract】 For the large capacity of generating unit, wide span and high side of grottoes, and concentrated collocation of underground structures, the underground powerhouse system construction of Xiangjiaba hydropower station is a very complicated process. The working procedures are interfered by each other and many influencing factors should be considered during the construction process. With traditional calculating and analyzing methods, it is difficult to get optimal mechanical equipment allocation and reasonable construction scheduling. In this paper, a new methodology of construction simulation for Xiangjiaba underground powerhouse system is presented, which combines object-oriented simulation modeling, cyclic operation simulation, dynamic simulation, network optimization and GIS-based 3D visualization. The main research contents and achievements are summarized as follows:(1) Based on the system analysis for underground powerhouse construction of Xiangjiaba hydropower station, a hierarchic and modular modeling method is presented. The simulation modeling course is expatiated and the approach to determine model parameters to evaluate its sensitivity is discussed.(2) Cooperating closely with the construction organization design work, the author carries out in-depth research on construction simulation and schedule optimization for Xiangjiaba underground powerhouse system. Moreover, methods of mechanical equipment coordination and resource optimization with dependence relationships among activities are discussed. The simulation results are analyzed to get much important information such as feasible construction period, reasonable construction scheduling, critical path, and optimal construction intensity.(3) A simulation-based analysis method with flexible network planning is presented and a breakthrough is made on the limitation of conventional PERT. The project completion probability is discussed, and which fully describes the uncertainty of construction scheduling and provides good basis for time limit analysis.(4) By using the powerful graphic processing techniques of GIS, the complicated construction process can be described vividly with dynamic digital three-dimensional pictures and the 3D dynamic visualization for construction of Xiangjiaba underground powerhouse system is realized, which provides an effective means for grasping the construction process comprehensively and quickly. <WP=5>(5) According to the presented ideas and the construction peculiarity of Xiangjiaba project, the author develops software of construction simulation and optimization for underground powerhouse system of Xiangjiaba hydropower station (ESAS-XJB), which provides a powerful analysis tool for construction system analysis research of underground powerhouse system.更多还原