Applied Mechanics and Materials Vols. 580-583

Abstract: The Extra-dosed cable-stayed bridge is considered as a new popular type of bridge structure in recent 20 years, whose mechanical properties and economic span both lie between continuous beam (or rigid frame ) bridges and cable-stayed bridges. This design is a double-cable-plane (85+150+85) m prestressed concrete Extra-dosed cable-stayed bridge, whose maximum Design speed is 100km/h and its width is 25.50m. The form of the highway is sextuple line which is 10.75m far away,and the cross-sectional slope is 2%. The girder body adopts three cell and single box, the height of beam takes quadratic parabola relation, which is 5m high at the middle support, while at the side support and the midspan is 3m. Vehicle standard load was applied on the bridge. The design uses Midas/Civil to establish the finite element model that is reasonable and simple, analyzing the structure behavior of the girder body under loading, especially the internal forces of bridge structure under dead load, live load and additional force.

Abstract: Based on the analysis of the development, defects and motion of present hydraulic system vibrating table, it is divided into several single disciplinary system modes which are organic related in this paper. Establishing unified digital model in integrated simulation environment through analyzing the function of these models, which will guide the design of digital vibration table system.

Abstract: This paper introduces to the application of the software---SketchUp in teaching process, which will make the abstract graph visualize, inspire students’ interest and help them to have a better grasp of civil engineering structure. We use SketchUp to create models, assist the teaching of civil engineering Graphing and recognition, improve students’ space imagination and cultivate their creativity.

Abstract: The numerical simulation for the flow characteristics of multiphase flow fields in the multiple-blade mixing agitator is carried out by means of combining of the large eddy simulation (LES) and multiphase flow model. Then the flow pattern changes and material mixing rule at different speed conditions are analyzed. The result shows that complicated circular flows form among the four groups of blades in the axial cross section. In the mixing process, the upper solid-liquid mixture is transported to the bottom of the agitator under the action of gravity and fluid shear. Finally it mainly distributes at the agitator walls and the inverted cone manifold in the center of the agitating shaft. With the gradually increasing in the agitation rate, there are a large amount of vortex structures near the blade. Then spiral vortex distribution areas are formed.

Abstract: Building Information Modeling (Building Information Modeling) is the relevant information and data as the basis for building projects model, building model be established to simulate the real information through the building of digital information. It has five characteristics of visualization, coordination, simulation, optimize and can plot and so on. As the construction industry in a brand-new concepts and technologies, BIM has been increasingly used in various construction projects in the country. Building Information Modeling (BIM) provides a platform to complete the continuity and consistency of all information within the whole life cycle of buildings.

Abstract: While architectural design went into the time of BIM, it meant not only the update of tools and methods, but also the update of design procedures and thinking model. In the meantime, while engineering construction went into the time of BIM, it meant not only the update of design delivery methods, but also the update of interactive mode and consequence among the links of entire industry. Therefore, there are so many obstacles to overcome and it depends on the rapid upgrade of information technology application and management standards of the related enterprises as well as the entire industry.

Abstract: Electrical design in a variety of electrical equipment needs to search, copy and modify constantly, so it is inefficient. Parametric design technology is the most common way to achieve rapid design, but less in the electrical design of the specific application. With the electrical equipment model parameterization and the reuse technology model, develop electrical equipment design software based on CAD secondary development. Use of software, design by three levels of reuse technology on the equipment for quick drawing, editing, statistics, to avoid duplication of work more efficiently, to improve design efficiency and reduce human waste.

Abstract: Normally consolidated subgrade limit bearing capacity of foundation soil was studied in the paper using slip line method. Slip line results are found to be consistent with the results calculated by Terzaghi theoretical formula and Hansen theoretical formula. Then the influence of cohesion, friction angle for normally consolidated subgrade is studied under complete smooth or complete tough conditions. The results show that the normally consolidated subgrade limit bearing capacity increases linearly with the increase of k, γ, while it increases nonlinear with the increase of Φ and the increasing growth rate improves with increasing value of Φ.

Abstract: Using sysweld software based on the Gauss heat source, simulated welding process of 45 steel plate, analysed welding temperature field、stress and strain. The maximum stress value appeared at the initial welding position of junction of base metal and weld. As the most dangerous section, the maximum strain value appeared at the end welding position of the junction of base metal and weld. Compressive strain appeared at the central part of weld and the tensile strain appeared at the junction of base material and weld. The deformation was of upward warping, which is helpful to explore the numerical simulation of welding structure.

Abstract: Through the comprehensive application of modern information technology, network technology and modern construction management 4D theory has carried out the systematic study on the implementation method of the tunnel construction quality information rapid collection, visual management, centralized control and highly sharing. Based on the development of tunnel construction quality information management system, by logging data of design, construction, monitoring, supervision and test during the construction period, digital network management would be achieved in the tunnel construction process. mainly to complete: 1) combined with 3D models and tunnel construction schedule, build a tunnel 4D model; 2) Take additional tunnel construction quality management information for 4D theory to achieve dynamic visualization of construction quality management and query; 3) through practical engineering applications, the system is proved innovation in the tunnel construction quality management.