Applied Mechanics and Materials Vols. 580-583

Abstract: BIM is a kind of multidimensional model information technology based on CAD which has been applied in some large projects at home and abroad. The technology of BIM has the characteristics of 3D visualization, virtual design and collaborative design and so on. In this paper, ideas about applying BIM Technology in granary projects have been put forward from the design stage, project implementation stage and the stage of cost control by taking a big diameter underground silo of reinforced concrete for example, simulating the architecture, structure, process of construction and process of grain flowing of underground silos, then creating the model of architecture, dynamic construction model of 4D. The article provides a new approach of applying BIM technology to granary facilities.

Abstract: Conversion of intelligent buildings (IB) is based on a data search, data pattern recognition, data processing and storage of data of projects of intelligent buildings (IB), automated systems (AS) and theirs elements. Author developed a model of a system for data monitoring, allowing for analysis and synthesis of intelligent buildings conversion projects. An intelligent monitoring allows to analyze data both of projects and elements of IB and AS. Complex monitoring allows to synthesize the data used in elements of IB and AS. It is possible to create CAD system and monitoring system for IB and AS conversion using principles described in this article. Vendors of elements for intelligent buildings, vendors of software used in controllers, adapter, etc., can find opportunity to found open community and establish rules for “internet specification” for intelligent elements for AS. Modern state of technology in intelligent search encourages me to say about full-automatic search, assembling and installing of software updates for AS elements of IB. I see that we can use industrial MDM and hypersearch software widely used in big internet vitrines.

Abstract: when the ballast track stretch with the bridge, ballast which is near expansion joint will move confusedly. As a result, rail produced vertical deformation. The deformation will affect the running safety and comfortability of train. At present, there are two kinds of treatments which are cover board structure and baffle structure to deal ballast’s movement. Aiming at the different modes of stretching when the two kinds of structures and different arrangement condition of bridge plate are applied, the rail-sleeper-ballast discrete element model is developed by the method of two-dimensional granular flow. The relationship between rail deformation and bridge expansion is analyzed on the foundation of the model. Results show as flows: when bridge extends or shortens, rail always produced upwarp deformation. Bridge plate should arrange asymmetrically. Like this, the rail deformation decrease by 40%. And adopting the baffle structure can effectively reduce the influence of bridge expansion in ballast truck.

Abstract: Comprehensively using the theories and techniques in connection with the tunnel engineering, geometric modeling, computer graphics, object-oriented method and software engineering, the authors in this paper have made research on the techniques for the three-dimensional solid modeling, tunnel realistic scene graphics rendering and tunnel construction real-time dynamic simulation and on the basis of the research, the authors developed an openGL-based real-time dynamic simulation system for tunnel construction. The application of the developed system to a practical tunnel shows that the system has very good vista of application in aspect of the progress control, organization and management of the tunnel construction.

Abstract: It is important for identifying the correspondences of points in different images. A double epipolar lines approach based on linear searching was proposed to identify the corresponding points in three images. First the component expressions of a given point epipolar equation were derived from the known epipolar model. Then the linear searching method was utilized to solve the problem of no analysis solutions since the numbers of state variables in these expressions were more than those of independent equations. Finally the target was found in looking for the corresponding points. The simulation shows it is effective.

Abstract: The clay layer finite element analysis model , which is established by using finite element program to simulate the embankment filling , takes the intercoupling between water and clay in drainage consolidation process into full account. The use of the effective stress principle consider the characteristics of clay such as nonlinerity , large deformation and so on ,carry out the plane strain finite element analysis on the clay and solve a series of engineering problems.

Abstract: Considered especially the "underground city" in Russia on the example of the three largest cities in approaches to information management governance improvement of spatial development by building 3-d geological and geotechnical models and 3(D) the real estate cadastre.

Abstract: The complexity of modern design objects, especially automatic control systems (ACS), the constant tightening of requirements for projects, the very high price of erroneous design decisions are inconsistent with the traditional tools of technology and design. A way out is to develop and implement a new set of tools - tools of the designer - computer-aided design.

Abstract: BIM (Building Information Modeling) as a new idea and technology, has been attached more and more attention in architecture and BIM is gradually changing the model of traditional 2D products images and decentralized design of construction process. This paper expounds the method of the integration of BIM and the reinforcement information expressions and its obstacles in the process of realization through the introduction of BIT technology.