Investigation of aerodynamic characteristics of spans of pedestrian suspension bridges

Salenko, S. D.; Obukhovskiy, A. D.; Gosteev, Yu. A.; Лебедев, А. А.

doi:10.1063/5.0053907

Cited by 2 publications

(7 citation statements)

References 10 publications

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“…For comparison with the results of previous aerodynamic experiments, as well as for a preliminary assessment of the effect permeability of the walls of girders on the values of the oscillation amplitudes, selective numerical calculations were performed. Since, according to the research results obtained earlier [21], low values of wind resonance (in the operational range) were detected in the model of a superstructure with a passage on the bottom. Therefore, numerical calculations were carried out with this type of model in the ANSYS Fluent (v.18.0).…”

Section: Numerical Calculationmentioning

confidence: 75%

“…For the first cross-section, aerodynamic tests showed the absence of such phenomena of aeroelastic instability as galloping, divergence and wind resonance [19,20]. The second cross-section of the superstructure of the suspension bridge is also resistant to the phenomenon of galloping and divergence, but it has low values of the critical velocity of the wind resonance [21]. The results of the previous stage of study are described in Section 3.1 in more detail.…”

Section: Research Significancementioning

confidence: 99%

“…At the same time, the most effective vibration damping devices were identified, the use of which reduced the energy of pulsations in the trace by up to 70%. However, tests of a sectional model of a superstructure with a passage on the bottom had shown that with-out vibration dampeners, all variants of the model are susceptible to wind resonance in the wind speed range of 8-20 m/s and a stall flutter with a wind of more than 20 m/s [19][20][21]. Therefore, tests of the same sectional models with a passage on the bottom, but hanged on elastic suspensions, were carried out.…”

Section: Previous Studiesmentioning

confidence: 99%

“…At the same time, these parameters were previously determined for the same models in the wind tunnel and by the numerical calculation method in a two-dimension. These values for model with solid walls were determined by physical experiment as an equal f a = 26.6 Hz and Sh = 0.116 [21]. Also, these values for model with solid walls were determined in numerical environment as an equal f a = 25.1 Hz and Sh = 0.111 [21].…”

Section: Numerical Aerodynamic Calculations Of Sectional Models Of Su...mentioning

confidence: 99%

“…These values for model with solid walls were determined by physical experiment as an equal f a = 26.6 Hz and Sh = 0.116 [21]. Also, these values for model with solid walls were determined in numerical environment as an equal f a = 25.1 Hz and Sh = 0.111 [21]. For model with permeable walls values were determined by physical experiment as an equal f a = 25.7 Hz and Sh = 0.112 [21].…”

Section: Numerical Aerodynamic Calculations Of Sectional Models Of Su...mentioning

confidence: 99%

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Numerical and Experimental Studies of the Use of Fiber-Reinforced Polymers in Long-Span Suspension Bridges

et al. 2022

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For the construction of transport infrastructure (including pipeline bridges for oil and gas transportation) in the conditions of the Far North, it is necessary to improve modern regulatory and technological base for using the fiber-reinforcing polymers. It is necessary to conduct searching research to determine the conditions and shapes of application of the fiber-reinforced polymer (FRP) in the load-bearing structures of bridges and pipelines through barriers. One such searching research is the study of the use of a suspension hybrid bridge with a superstructure of FRP. For this purpose, the calculations of finite-element models of pedestrian suspension bridges were performed and their aerodynamic stability was investigated on the section models in a wind tunnel. The novelty of the study consists in the proposed additions to the structure of the bridge, and the permissible geometric of the cross-sections of the superstructure were established for ensuring aerodynamic stability. Finally, this was the first time that it was directly established that the strength, stiffness and aerodynamic stability of a suspension hybrid bridge were provided.

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Section: Numerical Calculationmentioning

confidence: 75%

Section: Research Significancementioning

confidence: 99%

Section: Previous Studiesmentioning

confidence: 99%

Section: Numerical Aerodynamic Calculations Of Sectional Models Of Su...mentioning

confidence: 99%

Section: Numerical Aerodynamic Calculations Of Sectional Models Of Su...mentioning

confidence: 99%

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Numerical and Experimental Studies of the Use of Fiber-Reinforced Polymers in Long-Span Suspension Bridges

et al. 2022

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О Предварительных Результатах Проведенных Исследований По Применению Стеклопластика В Пешеходных Висячих Мостах, "Современные Исследования Трансформации Криосферы И Вопросы Геотехнической Безопасности Сооружений В Арктике"

Гостеев¹,

Лебедев²,

Обуховский³

et al. 2021

Современные Исследования Трансформации Криосферы И Вопросы Геотехнической Безопасности Сооружений В Арктике Под Ред. В.П.Мельни

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Создание долговечной и безопасной транспортной инфраструктуры в северных регионах Российской Федерации не только откроет короткий выход к Северному морскому пути, но и послужит развитию городов и объединению регионов РФ. Для строительства искусственных сооружений в условиях Крайнего Севера необходимо актуализировать современную нормативно-технологическую базу, что позволит применять новые полимерные композиционные материалы. Для этого необходимо исследовать специфику их свойств и усовершенствовать методы проектирования несущих конструкций из этих материалов. Одной из задач, которую необходимо решить в рамках данной проблематики, является осуществление конструктивного поиска по применению полимерных композиционных материалов (угле-, стеклопластика) в несущих конструкциях мостов. В данной статье описаны основные результаты решения задачи по применению полимерного композита в пешеходных висячих мостах. Во время исследования были проведены конечно элементные расчеты напряжено-деформированного состояния висячих однопролетных пешеходных мостов, а также проведены исследования их аэродинамической устойчивости. В результате была установлена принципиальная возможность обеспечения прочности, жесткости и аэродинамической устойчивости висячего моста из полимерных композитов.

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Investigation of aerodynamic characteristics of spans of pedestrian suspension bridges

Cited by 2 publications

References 10 publications

Numerical and Experimental Studies of the Use of Fiber-Reinforced Polymers in Long-Span Suspension Bridges

Numerical and Experimental Studies of the Use of Fiber-Reinforced Polymers in Long-Span Suspension Bridges

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