Key Engineering Materials Vols. 480-481

Abstract: Inspection well is needed for water drainage pipe jacking project in municipal engineering construction, and the deep ones are usually built by sunk tube method. According to a real project, this paper dissertates the construction technique of deep buried inspection well with sunk tube method under the condition of abundant water existence form the aspect of design theory and construction technique and emphasizes the problems and countermeasures during tube sinkage. The practice shows that inspection well with sunk tube method could resolve the difficulty of construction in Water-soaked Stratum.

Abstract: In this paper, wooden doors and windows often decorated manor house as the research object, by analyzing the types, forms, and other decorative techniques, revealing the traditional architectural Shanxi reflected the deep cultural connotation, and the wood used in building, it is the practical and a combination of aesthetics, but also building the spirit of the carrier. Shanxi often manor house is a typical style of a northern Shanxi Merchants in Ming and Qing buildings. After nearly a century of uncompromising attention to quality as a building lasts. Shanxi pay attention to "roots", fortune after the regular family invested huge capital to build their own homes, therefore, often family has strong strength to his own aesthetic ideal, cultural awareness, spiritual pursuit, and local folk customs and so concentrated on their own construction and architectural decoration. Through the construction and decoration can be seen often at home that year strong economic strength, and their aesthetic, the pursuit of morality and local customs, should be studied in depth. Residential buildings have doors and windows. Door for people to access the main building; windows, mainly used for indoor ventilation and lighting. Ming and Qing Dynasties, construction of columns, beams, brackets and roof shape and other large areas of wood has a strict limit, the owner's wealth, only by aesthetics, etc. for doors, windows and other small wood decorations to reflect. With strong economic strength in the construction of a permanent home when the estate into a huge financial, human and material resources, producing countless exquisite wood carving decoration.

Abstract: With China cast CAE / InteCAST, we analyzed the ordinary valve casting parameters of solidification process, flow and heat transfer, and frequency smelting refining furnace used in the process of feeding wire, argon technology in the intermediate. Comparison-ray testing and physical anatomy of the results, we developed nuclear power valve steel casting process parameters. The results showed that the software forecast casting the shrinkage tendency of value; frequency smelting refining controlled sulfur, phosphorus and aluminum content; products fully comply with the ASTM A216/A216M overcome hot cracking defects, improving the casting ability of anti-fatigue.

Abstract: This paper proposed a method to measure destructive pavement area based on region growing and topological relation. Firstly, separate the image of smeary area and calibrate plate area according to the image of topological relations. Then, the closed boundary could be achieved by utilizing the algorithms of region growing and boundary tracking, and the pixels in this area could be calculated. Finally, the practical area can be calculated through the ratio relation between the area and the calibrate plate. It’s demonstrated through experiments that the method has low time complexity and high robust.

Abstract: Microprocessors and sensor technology together achieved a fully automatic washing machine based on fuzzy control. System used an integrated mixed-signal system-level C8051F020 microcontroller. The system would detect and reasoning on the amount of washing objects, fabricl quality, water level, reference washing time, the flow intensity, real-time temperature and dirt level of washing liquid, so as to achieve automatically complete the whole washing process. Experiments shows that the system is stable, easy to operate, cost-effective advanced features, so that it has a certain value.

Abstract: Mixed Effect models are flexible models to analyze grouped data including longitudinal data, repeated measures data, and multivariate multilevel data. One of the most common applications is nonlinear growth data. The Chapman-Richards model was fitted using nonlinear mixed-effects modeling approach. Nonlinear mixed-effects models involve both fixed effects and random effects. The process of model building for nonlinear mixed-effects models is to determine which parameters should be random effects and which should be purely fixed effects, as well as procedures for determining random effects variance-covariance matrices (e.g. diagonal matrices) to reduce the number of the parameters in the model. Information criterion statistics (AIC, BIC and Likelihood ratio test) are used for comparing different structures of the random effects components. These methods are illustrated using the nonlinear mixed-effects methods in S-Plus software.

Abstract: Scale economic analysis is important in improving industries economic level and the industry competitive power. This paper uses DEA to analyze industry scale economy, and uses China's largest steel enterprise as an example. It shows this kind of analysis in industry scale economy analysis has universal applicability and efficiency.

Abstract: Non-cable hoisting frame is a construction method of the main arch ribs of big span bridge. The key issue in the numerical simulation of this type of bridge construction is geometric nonlinearity approach. Construction method of long-span bridge rib and stage-by-stage construction method of a arch bridge was simulated by finite element method. The geometric description was attained comparison with simulation results and the actual measurement of cable force. The results show that finite element method is effectively used in the simulation of long span arch bridge construction.

Abstract: The mechanism of Masonry Arch Bridge is discussed by chain disaster theory in this paper. Result on Analyzing of the causes of disease reveals a complex chain relationships and the stage of disease development. Cutting chain detection, prevention and strengthening are proposed for safety evaluation of masonry arch bridge by the chain-styled theory. According to chain disaster theory, damage mechanism of Masonry Arch Bridge (Holly Bridge) is analyzed, and strengthening measures have been proposed.

Abstract: An effective non-contact electrostatic detection method is used for human body motion detection. Theoretical analysis and pratical experiments are carried out to prove that this method is effective in the field of human body monitoring, in which a model for human body induced potential by stepping has been proposed. Furthermore, experiment results also prove that it’s feasible to measure the average velocity and route of human body motion by multiple electrodes array. What’s more the real-time velocity and direction of human body motion can be determined by orthogonal electrostatic detector array, and the real-time velocity and direction of human body motion can be obtained within the range of 2 meters.