Study of the dynamic response of a CAARC building by the synthetic wind method and comparison with different approaches

Abstract

Purpose This paper analyzes the effect that is generated in the dynamic response of a Commonwealth Advisory Aeronautical Council building for different types of power spectra. This article also compares synthetic wind method (SWM) results with wind tunnel tests and other numerical approaches.Design/methodology/approach One of the main methodologies developed in Brazil, the SWM, is employed to determine the dynamic wind loads. The Davenport, Lumley and Panowski, Harris, von Karman and Kaimal model are used in SWM to generate the resonant harmonics. Lateral pressures are calculated by the wind speed deflection profile for 30, 35, 40 and 45 m/s. The structure is processed in Autodesk Robot Structural Analysis with numerical analysis in FEM by the Hilber–Hughes–Taylor method. To corroborate the synthetic wind with experimental results, displacement curves are developed for wind tunnel experimental results, Davenport method, Eurocode and NBR 6123, together with the SWM.Findings Results show that for 30 m/s, the lowest convergence of the power spectra models was presented and that the greatest difference found was below 10%. In addition, it was shown that Eurocode 1-4 can lead to oversizing, while NBR 6123 can lead to undersizing, compared with the experimental results. Finally, results by the Davenport method, wind tunnel test and synthetic wind showed good accuracy.Originality/value By carrying out this comparative analysis, this work presents an important contribution in the field of calculating the dynamic response of tall buildings. Studies with these comparisons to corroborate the SWM had not yet been carried out.

Research on the Characteristics of Urban Building Cluster Wind Field Based on UAV Wind Measurement

“…The corrected average wind speed profiles, wind direction angles, and turbulence results obtained by the UAV wind measurement system at heights of 10-40 m were compared with the results obtained by the wind tower anemometers at corresponding heights, as shown in Table 3. After correction, the data measured by the UAV wind measurement system had an error of less than 3% compared to the wind speed measurements at the corresponding heights of the wind tower, and the error in wind direction angles between the two was within 0.5% [37]. This indicates that the data correction method proposed in this paper can effectively calibrate the wind field data measured by the UAV-based system, making it more closely match the measurements of the wind tower.…”

“…This is because the flow around the structure in a building complex is generally different from the flow around isolated buildings. A more intuitive example is the passageway located between the buildings, where the inflow wind disperses from both sides of the buildings and converges within the passageway, leading to a sharp increase in wind load and its response [37,41]. For parallel buildings such as Building 1# and Building 4#, and Building 2# and Building 5#, the side faces of the buildings are affected by the adjacent buildings, and the wind speed ratio in the pedestrian walkway gradually decreases.…”

Optimization of reinforced concrete columns with variable circular cross-section hollowed using the criterion of instability and mechanical strength

“…Structure projects cannot only evaluate safety concepts related to resistance and deformation but also balance stability, mainly for slender structures (Figueiredo, 1973). Evaluating global stability is a fundamental step in any structural design development, such as, for example, in (Mattias, 2021) and (Mattias and Paramo, 2022).…”