Dynamic Three-Dimension Visual Simulation For Xiangjiaba Hydroplant Dam Concrete Construction

The construction of dam concrete for hydraulic and hydroelectric engineering is a complicated systems engineering, which is influenced by many affecting factors. As is known to all, its quantities are great, and placement period is also very long. During the process of placement, there are great amount and types of placement machine, as well. Especially, the concrete works makes features of complicated structure, high technical requirements, and great construction intensity. In addition, many factors must be considered carefully to determine which dam block to be placed. So it is relation and condition of variously those factors during concrete dam construction process, which not only makes us have trouble with personal arrangement of sequence of pouring and construction alternatives but also not take comprehensively in account of all factors effecting construction alternatives. Particularly for comparison and optimization of several pouring plans and machine combined schemes, it is more difficult to make an opportune and available decision. Applying computer simulation innovates an approach for the construction research of hydraulic and hydroelectric engineering.The paper systemically analyses the relation and condition of variously main factors during the concrete dam construction process and applies to computer simulation system, which analyses dam concrete construction process. It acquires technology indexes including construction intensity, project construction imagine and construction machine work time. Therefore, it provides science reference for deciding dam concrete construction alternatives. On the one hand, the visualization of the complex dynamic space-time relationship among construction works is displayed distinctly on the basis of GIS. And dynamic three-dimension visual simulation result for dam concrete construction is also realized. The approach described in the paper has improved greatly modern level for the design and organization of dam concrete construction. On the other hand, for optimizing construction procedure, exploring construction machinery matching and accelerated construction and justifying of dam construction period, it has also given effective visual analysis decision reference and improved greatly the construction design and construction organization, which main research contents and achievements are as follows:(l)According to process features of concrete dam pouring system, develop an integration plan, taking tower belts and cable cranes as main and taking the gantry cranes and belt conveyers as supplementary.(2)In the view of simulation system for Hydraulic and hydroelectric engineering, resolve key technique about digital terrain model and mass of dam digital model, suiting to hydropower project. The visualization of the complex dynamic space-time relationship among construction works is displayed distinctly on the basis of GIS. And dynamic three-dimension or two-dimension visual simulation result for dam concrete construction is also realized.(3)Establish powerful analysis and statistic model about simulation result to serve for construction organization and control, and offer maker technology indexes of construction system, quickly and accurately.(4)Combining the research with Xiangjiaba project, by the software of dynamicthree-dimension visual simulation for dam concrete construction process, the construction process has been simulated separately in an combined scheme, which includes pouring with different longitudinal joint or not, consisting of much construction machinery. Moreover, it has got satisfied result and been succeed in construction organization of Xiangjiaba project.