Инженерно-строительный журнал, № 5, 2016 РАСЧЕТЫ Прядко Ю.Н., Мущанов В.Ф., Бартоло Х., Ватин Н.И., Руднева И.Н. Усовершенствование численных методов расчета надежности узлов висячих покрытий // Инженерно-строительный журнал. 2016. № 5(65). С. 27–41. doi: 10.5862/MCE.65.3 Improved numerical methods in reliability analysis of suspension roof joints Усовершенствование численных методов расчета надежности узлов висячих покрытий I.N. Priadko, Kiev National University of Construction and Architecture, Kiev, Ukraine V.P. Mushchanov, Donbas National Academy of Civil Engineering and Architecture, Makiyivka, Ukraine H. Bartolo, Polytechnic Institute of Leiria, Leiria, Portugal N.I. Vatin, Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia I.N. Rudnieva, Kyiv National University of Construction and Architecture, Kyiv, Ukraine Канд. техн. наук, доцент Ю.Н. Прядко, Киевский Национальный Университет Строительства и Архитектуры, Киев, Украина д-р техн. наук, проректор по научной работе, заведующий кафедрой В.Ф. Мущанов, Донбасская национальная академия строительства и архитектуры, Макеевка, Украина PhD, профессор кафедры Гражданского строительства Х. Бартоло, Политехнический институт в г. Лейрия, Лейрия, Португалия д-р техн. наук, директор Инженерно- строительного института Н.И. Ватин, Санкт-Петербургский политехнический университет Петра Великого, Санкт- Петербург, Россия канд. техн. наук, доцент И.Н. Руднева, Киевский национальный университет строительства и архитектуры, Киев, Украина Key words: roof; suspension devices; suspension system; suspensions; civil engineering; constructions; buildings; roof joints; reliability indices; stress-strain analysis Ключевые слова: покрытие; висячие конструкции; висячие системы; висячий; гражданское строительство; сооружения; здания; узлы крыши; показатели надежности; анализ напряженно-деформированного состояния Abstract. Modern structures require more complex designs. There is an increased need for accurate approaches to assessing uncertainties in loads, geometry, material properties, and operational environments. However, information is scarce on the reliability of suspension roofs together with their joints. There is an urgent need for estimating stress-strain state and reliability of welded joints, so recommendations can be given based on the obtained data. In this paper, reliability of large-span suspension roofs was investigated and a fundamental approach is proposed for reliability determination of these joints at the design phase of suspension rod roofs. In this work, several joints were investigated: supporting joints between rigid threads and external/internal contours, intermediate joints of top /lower chords of supporting threads, as well as joints between vertical/horizontal links and supporting thread of a roof. To measure reliability of joints, logic and probabilistic methods were used conjointly with other methods based on mathematical statistics. The proposed approach can be applied to design of suspension roof systems and help to develop better designs for better safety, quality control and efficiency of these structures, providing economic and social benefits. 27