The study of wind effects on the bridge constructions

Poddaeva, Olga; Fedosova, Anastasia; Gribach, Julia

doi:10.1051/e3sconf/20199703030

Cited by 5 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A number of articles are devoted to the Volgogradsky Bridge oscillations that take into account the foreign experience in the study of this problem. We mention several, which we believe are particularly interesting [13][14][15][16]. So, the articles express an opinion that the intense oscillations of the Volgogradsky Bridge are actually self-excited oscillations brought about by aeroelestic processes.…”

Section: Introductionmentioning

confidence: 95%

Analysis of long-span bridge fluctuations for finding its optimal safe operation

Smirnova

2020

E3S Web Conf.

View full text Add to dashboard Cite

The paper studies the intense oscillations sustained by the Volgogradsky Bridge on May 20, 2010. The studies were carried out based on physical and mathematical experiments. The introduction indicates the causes of emergence of the intense aeroelastic oscillations. Description is given of the physical nature of one of the types of these oscillations, i.e. stall flutter. Catastrophes are considered that had been caused by the flutter. Methodological fundamentals of the experiment are named and modern software capabilities of computer-aided fluid and gas dynamics are listed. The results of the experiment are supplied, including visualization of the Karman vortex street and determination of the Strouhal number. The recalculation of the experimental data to natural conditions is substantiated. A description is given of calculation of the bridge’s aeroelastic oscillations. The main results of the aerodynamic calculation are supplied: the Strouhal numbers and critical velocities. The results of mathematical and physical experiments tallied well. A tally of the calculation and estimated full-scale results is pointed out. Results of this calculation (bridge oscillation amplitudes) are supplied. The conclusions point to the prospective viability of the mathematical experiment method. The proposed methods can minimize risks for the construction of long-span girder bridges, ensuring the precise estimation of their subsequent safe operation.

show abstract

Section: Introductionmentioning

confidence: 95%

Analysis of long-span bridge fluctuations for finding its optimal safe operation

Smirnova

2020

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…The canceled structure is rectangular; its length is L = ξ, its height is H = 3/4ξ, and it width is 5/8ξ, where ξ is the characteristic dimension. Figure 2 Methods of simulating wind air flows, surrounding the aeroelastic model of a structure or a facility in the wind tunnel of MGSU, are described in papers [20][21][22][23][24]. Studies of gas flows, surrounding fixed aeroelastic models of structures, are governed by the structure design objectives and the aerodynamics of industrial buildings [23][24][25][26][27].…”

Section: Object Of Studymentioning

confidence: 99%

“…When dimensions of a full-scale structure are reduced by hundreds of times, the similarity of the Reynolds number requires respective multiplication of the air flow velocity in the tunnel. Thereby, the air flow velocity in the tunnel would exceed 50-100 m/s, which is why, during scaled model testing in the wind tunnel, a full-scale Reynolds number Re ≈ 2 × 10 7 match is impossible [20][21][22].…”

Section: Theoretical Provisions Of Experimental Problem Solvingmentioning

confidence: 99%

“…For similar class structures (high-drag bodies), there is a so-called "self-similarity range by Reynolds number Re", where an increase in the number leads to the loss of dependency of the flow behavior of the body on this parameter [5,[20][21][22]. Detailed studies of the aerodynamic characteristics of a flow for this wind tunnel, operating at MSCU, are addressed in papers [5,11,[20][21][22] and used in the work.…”

Section: Theoretical Provisions Of Experimental Problem Solvingmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Study of an Industrial Tower-Type Supporting Frame with Facades Subjected to the Stationary Wind Effect

Frishter

Lukin²

2023

Buildings

View full text Add to dashboard Cite

Aerodynamic studies of canceled structures are important for design of buildings, analysis of air flows inside buildings, evaluation of buildings’ effects on air flow patterns of the adjoining area, and optimal choice of enclosing structures. The analysis of wind effects during the design of canceled structures is governed by codes and standards of general purpose. These statutory documents do not regulate the mounting procedure of wind protection screens, nor do they contain the analysis of wind effects on structures with different angles of attack of an incident wind flow. The codes prescribe aeroelastic model testing in special civil engineering wind tunnels during the design of such structures. The purpose of this research project is to analyze wind effects on the force and torque specification of a canceled structure at different wind effect angles accounting for the mounting sequence of wind protection screens. The subject of the article is an experimental aeroelastic study of wind effects on a canceled structure accounting for sequential mounting of wind protection screens on the structure’s facade. The obtained data will allow for the analysis of effects of the wind flow angle on internal forces of the structure, given that a change in its permeability is taken into account. At the initial design stage, experimental modeling of wind effects in a wind tunnel is thereby considered a structure model validation step. The relevance of the paper lies in the need to identify optimum operating conditions of canceled structures, subjected to a wind effect, to ensure safe and comfortable work of people and reliable operation of process equipment installed inside the facility.

show abstract

“…However, the subject bridge had approximately 9 m clearance height and an aeroelastic instability of 4 & 2.16, corresponding to the span-to-width and span-to-depth ratio. Due to the consequent aeroelastic instability, it was considered not wind-sensitive [28,[38][39][40][41]. Further, thermal distortions are significant when the superstructure is erected at temperatures that significantly differ from its in-service condition (∆12 • C-annually), causing deformation by internal actions on constrained sections (welded and pinned joints).…”

Section: Structural Analysis 41 Structural Modellingmentioning

confidence: 99%

Condition Assessment and Adaptation of Bailey Bridges as a Permanent Structures

Kusimba

Rinzin²,

Banno³

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

The present study assessed the Bailey Bridge’s condition and investigated its adaptation as a permanent structure, targeted the Acrow Bailey Bridge in Japan. Field diagnostic loading experiments were performed under various loading conditions, such as dynamic and static loading tests. The onsite data were obtained using a transducer, friction strain gauge, target measurements for the image processing approach, and accelerometer. From the field measurements, the deflection and stresses of the bridge were found to operate within the linear elastic region. The bridge was then accurately modeled based on the in situ geometric configuration of the bridge, and Finite Element Analysis was performed. The model’s accuracy was validated with the onsite data under the linear elastic domain. The model was deployed to check for resistance of critical members. A nonlinear analysis based on the linear and nonlinear buckling method was performed to determine the subject bridge’s Serviceability Limit State and Ultimate Limit State. The results showed that the first out-of-plane eigenvalue buckling analysis could monolithically assess bridge members. Further, the study established digital twin models resolve for historical data through in situ modeling measurements. Therefore, the findings obtained in this study highlight the bridge’s Structural Health Condition, bearing capacity, and propose a framework for adaptation as a permanent structure.

show abstract

The study of wind effects on the bridge constructions

Cited by 5 publications

References 6 publications

Analysis of long-span bridge fluctuations for finding its optimal safe operation

Analysis of long-span bridge fluctuations for finding its optimal safe operation

Experimental Study of an Industrial Tower-Type Supporting Frame with Facades Subjected to the Stationary Wind Effect

Condition Assessment and Adaptation of Bailey Bridges as a Permanent Structures

Contact Info

Product

Resources

About