Scientific Journal of KubSAU

In this article on the example of the three-floor building the offered method of the analysis of safety of the structures, based on the complex and individual accounting of a combination of loadings is considered

In this article we developed and improved the algorithm for complex inspection of buildings and constructions at teamwork with communication towers. The inspection of a building which was made using the described algorithm is presented

The purpose of the researches was the necessity of deep study of hydraulic dimensionless expense descriptions of regulative organ of model standard of band regulator of water, for rice checks. Rice is one of the most moisture-loving agricultural cultures. Its productivity straightly depends on adjusting of water level in rice cotter pins on the different periods of development of this culture: period of primary submergence of check, fight against weeds, primary vegetation, phases of bushing out, vegetations of suckling and cereous ripeness. On each of the considered periods of development of plant the guided water level is needed, that high-quality can be realized only at application of the systems of automatic control. In rice irrigation systems there is plenty enough of losses of water due to not managed leakage in regulator flow and water level in the closed position. An actual and meaningful task is development, research and introduction in practice of reliable and high-efficiency regulators expense and water level for rice checks. The article presents results of research of hydraulic dimensionless expense descriptions of regulative organ of model standard, developed by us. Intercommunication of degree of influence is investigational, on the basis of application of methods of planning of experiment, on the function of response, which dimensionless expense description of regulative organ of model standard of band regulator of water, relations of diameters of the downlow openings, is taken for, at the different relation of workers pressures. From appraised experimental data approximation dependences, which were in same queue analysed for the purpose cross-correlation connection, determination, elasticity, are built. Also, in the article there is an estimation of statistical meaningfulness of the built model of regression given with the use of criterion of F - Fishera and parameters of equalization of regression with the use of criterion of t - St'yudenta, at the set level of meaningfulness α. At the permanent relations of workers pressures the analysis of sections of surface of response H/Нmax 0,6; 0,8; 1,0 shows that functions have extremums on a maximum. At minimum relations of workers pressures H/Нmax equal 0,6 the maximal value of function of response is equal 81% it will be at the relation of diameters of the downlow openings of d/dmax equal 0,9. With the increase of relation of workers pressures H/Нmax to 0,8 have a trend of maximum toward an increase and here he comes at the value of function of response equal 94% and relation of diameters of the downlow openings of d/dmax equal 0,92. Further increase of relation of workers pressures of H/Нmax to 1,0 also results in the trend of a maximum of function of response which arrives at a value 118%, here the relation of diameters of the downlow openings of d/dmax is equal to 0,94. The combined analysis of curves shows that at any relation of workers pressures, the degree of influence on the function of response increases due to more relation of diameters of the downlow openings

In the article we have offered the tape regulator of an expense and a water level for rice checks. By means of a method of planning of experiment with hydraulic researches of the tape regulator are carried out

Limited resource of irrigation water in the South of Russia is a particularly actual task in the production of moisture-loving crops, such as rice. To solve the problem of rational use of water when watering is not possible without the organization of an automated water distribution. As it was shown by the analysis of tools and technologies of regulation of water supply, the most promising, form tested and used, can be tape regulators of flow and water level. They have a simple construction diagram, unpretentious in operation. However, we have identified a fault – unregulated leaking, not fully covered through the bore, which in turn increases the uncontrolled consumption of irrigation water. To solve this problem we propose a number of designs, protected by patents of the Russian Federation, having special fixture to ensure unauthorized leaks, even in a state almost close to the fully closed opening expiration from the regulator. The article comprehensively considers hydraulic studies of controller initially, without any additions that contribute to the problem of eliminating leakage. The proposed study with the analysis of the distribution of velocities and pressures in the design of belt regulator, will allow you to have the basic reference model against which it will be possible to analyze the degree of influence of constructive-technological changes at the work the newly developed devices. For this, we modeled tape controller in the software package FreeCАD version 0.15, when using SAE - system FlowVision. The task of modeling water flow were solved in flat statement, including the moment of full closing of the belt passage opening of the regulator. For plotting surfaces, lines, levels and cross-section response functions, we used a software package wxMaxima. The results obtained allowed a comprehensive analysis of the work tape of the locking device, hydraulically actuated device in all modes of the major factors and, in the future, will help to address the issue of studying the impact of introduced technological changes in the design of controllers