Збірники наукових праць ЦНТУ
Permanent URI for this communityhttps://dspace.kntu.kr.ua/handle/123456789/1
Browse
2 results
Search Results
Item Методика визначення кліматичних навантажень за даними регіональної мережі метеостанцій(ЦНТУ, 2023) Пашинський, В. А.; Пашинський, М. В.; Pashynskyi, V.; Pashynskyi, М.Методика визначення навантажень і впливів на будівельні конструкції за даними локальної мережі метеостанцій удосконалена шляхом уведення запасів, що враховують випадковий розкид даних найближчих метеостанцій. Визначені доцільні розміри локальної мережі метеостанцій. Обґрунтована можливість відображення територіальної мінливості характеристичних значень снігового та вітрового навантаження рівняннями площини, єдиними для усієї території області. У якості прикладу отримані такі рівняння для п'яти областей України. The work is devoted to the adaptation of the planar approximation method to determine the characteristic values of snow cover weight and wind pressure at a given design point based on the data of a local network of weather stations. Important elements of the research are the provision of specified reserves for the determination of characteristic values, as well as the analysis of the possibility of using a single equation for the entire territory of each of the administrative regions of Ukraine. The initial data are characteristic values of snow cover weight and maximum wind pressure with a recurrence period of 50 years at 171 plain weather stations of Ukraine. According to the data of the weather stations of the region, the equation of the Euclidean plane is established by the method of least squares, which generally reflects the trend of territorial changes in the characteristic value of the load. Calculations for three project points from different geographical regions of Ukraine showed that the equations of the approximating Euclidean plane should be made taking into account the data of the local network of weather stations located within a radius of 100...150 km from the project point. Based on the obtained equation and the geographical coordinates of the design point, the desired characteristic value of the load is calculated. The necessary reserves in determining the characteristic values of the loads are provided taking into account the statistical distribution of the data of individual weather stations relative to the obtained Euclidean plane. In order to substantiate the possibility of describing the trends of territorial changes in the characteristic values of snow and wind loads within the entire territory of the administrative region with a single equation of the Euclidean plane, calculations were made for five regions of Ukraine. The deviations obtained by this equation of the characteristic values of the loads from the actual data of individual weather stations are basically close to the similar deviations of the territorial zoning maps of the current DBN B.1.2-2:2006 "Loads and influences". The results of the study confirmed the possibility of determining the characteristic values of climatic loads at a given geographic (design) point with a given level of security according to the equation of the Euclidean plane, which was established by the method of least squares based on the data of the local network of weather stations in the region. In most cases, this equation can be the same for the entire territory of the administrative region. The division of the territory of the region into parts with significantly different climatic conditions contributes to the reduction of probable errors in determining the characteristic values of loads.Item Несуча здатність сонячних панелей, встановлених на похилих дахах будівель на території України(ЦНТУ, 2022) Пашинський, М. В.; Настоящий, В. А.; Пашинський, В. А.; Pashynskyi, M.; Nastoyashchiy, V.; Pashynskyi, V.Виконані розрахунки несучої здатності сонячних панелей, розташованих на дахах малоповерхових будинків у різних регіонах України. З урахуванням кліматичних навантажень для кожної з адміністративних областей встановлені допустимі значення прольоту панелей при різних кутах нахилу до горизонту. В усіх випадках вирішальним виявився розрахунок за вимогами другого граничного стану. Результати дослідження дозволяють враховувати несучу здатність при виборі сонячних панелей для різних областей України. The growing shortage of energy resources encourages the more active usage of energy-efficient technologies, in particular the use of solar panels to power low-rise buildings. The aim of the work is to establish the maximum allowable spans of solar panels taking into account climatic loads in different regions of Ukraine. According to the previously developed method, the bearing capacity of solar panels made of tempered glass with a thickness of 3 mm at a ratio of length to span of the panel equal to 2.0 was performed. The panels are installed at a height of up to 20 m from the ground level at angles of inclination to the horizon due to the design of the roofs. Characteristic values of snow cover weight, ice weight and wind pressure were adopted based on the results of the administrative-territorial zoning of Ukraine previously performed by the authors. Each administrative region corresponds to the characteristic values of the loads set in the safety margin with a security level of 0.95. This approach allowed to obtain the dependences of the maximum allowable span (smaller size) of the solar panel from its angle of inclination to the horizon for all 25 regions. In all cases, the condition of rigidity was decisive, and the allowable spans of panels in Ukraine were obtained equal to 0.61… 1.10 m. The largest allowable spans are in the southern regions, and the smallest span - in the snowy regions of Ukraine. Changing the thickness of the panel leads to a proportional change in its allowable span. The developed recommendations allow to choose the type and dimensions of solar panels for installation on the hip roofs of buildings in each of the administrative regions of Ukraine. The allowable span of panels, the shape of which is closer to square, can be increased by repeating the calculations according to the aforementioned method.