Aerodynamic Characteristics and Lateral Displacements of a Set of Two Buildings in a Linked Tall Building System

Chen, Zengshun; Kim, Bubryur; Lee, Dong‐Eun

doi:10.3390/s21124046

Cited by 7 publications

(5 citation statements)

References 39 publications

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“…In high-rise buildings, the staggered truss steel structure mainly takes the building panel, truss structure, and load-bearing column as the basis [4]. e unilateral truss is arranged along the vertical direction of the interlayer, and the adjacent truss is staggered [5]. One side is connected to the top, and the other is connected to the bottom of the adjacent truss.…”

Section: Staggered Truss Steel Structurementioning

confidence: 99%

Electrochemical Seismic Design and Artificial Intelligence System Modeling of High-Rise Steel Structure Buildings

Xia

2022

Journal of Chemistry

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This study aims to improve the mechanical earthquake-resistance ability of high-rise buildings’ steel structures so that their safety performance is improved and their service life is prolonged. The simulation experiments on the response of the staggered truss steel structure are conducted in high-rise buildings to earthquake energy waves. First, MATLAB is used to build an experimental platform for earthquake-resistance evaluation of high-rise residential buildings. Through the high-rise building model training, it is found that the model meets the needs of the study. Second, the earthquake-resistance performance parameters, deformation recovery capacity, and dynamic response speed of the staggered truss steel structure are simulated and tested. After earthquake energy waves with different intensities are posed on the high-rise building model, the performance parameters of the staggered truss structure are tested, and the changes in the parameters of the structure are analyzed. Finally, the earthquake-resistance performance and post-earthquake recovery ability of the staggered truss structure are tested through comparative analysis. The results show that the interlayer displacement fluctuation of the staggered truss steel structure is the smallest, and the earthquake resistance performance is better than others under the energy waves of all kinds of earthquakes. Although its earthquake-resistance ability decreases with the duration of earthquakes, the reduction speed is slow. When the quake lasts 12 s, the resistance of the staggered truss structure is still greater than 2500 MPa. This study provides a reference for the staggered truss structure of high-rise buildings.

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Section: Staggered Truss Steel Structurementioning

confidence: 99%

Electrochemical Seismic Design and Artificial Intelligence System Modeling of High-Rise Steel Structure Buildings

Xia

2022

Journal of Chemistry

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“…Negative Predictive Value = TN TN + FN (5) For this objective, two ML-based classifiers (SVM and ANN) were employed. A challenging aspect of developing ML-based classifiers is determining their parameters.…”

Section: Image Classifiermentioning

confidence: 99%

“…In addition, unexpected expansion, external forces such as wind [1], and incremental loads contribute to structural aging, which increases maintenance, repair, or replacement costs [2][3][4]. Further, numerous variables can cause concrete infrastructure deterioration, such as mechanical stress, fatigue [5], and chemical and environmental conditions [6]. In the past, assessing infrastructure's condition was done using human subjectiveness.…”

Section: Introductionmentioning

confidence: 99%

Multivariate Analysis of Concrete Image Using Thermography and Edge Detection

Kim

Choi

et al. 2021

Sensors

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With the growing demand for structural health monitoring system applications, data imaging is an ideal method for performing regular routine maintenance inspections. Image analysis can provide invaluable information about the health conditions of a structure’s existing infrastructure by recording and analyzing exterior damages. Therefore, it is desirable to have an automated approach that reports defects on images reliably and robustly. This paper presents a multivariate analysis approach for images, specifically for assessing substantial damage (such as cracks). The image analysis provides graph representations that are related to the image, such as the histogram. In addition, image-processing techniques such as grayscale are also implemented, which enhance the object’s information present in the image. In addition, this study uses image segmentation and a neural network, for transforming an image to analyze it more easily and as a classifier, respectively. Initially, each concrete structure image is preprocessed to highlight the crack. A neural network is used to calculate and categorize the visual characteristics of each region, and it shows an accuracy for classification of 98%. Experimental results show that thermal image extraction yields better histogram and cumulative distribution function features. The system can promote the development of various thermal image applications, such as nonphysical visual recognition and fault detection analysis.

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“…They showed that vertical plates significantly impact the building's fluctuating and mean pressure, base moment, and across-wind and along-wind layer forces. The lateral displacements and aerodynamic characteristics of two staggered buildings in a linked-building (LB) system was recently considered by Chen et al 24 They observed that the gap between the two buildings substantially influences wind-load when a link connects them.…”

Section: Introductionmentioning

confidence: 99%

Large-eddy simulation of airflow dynamics around a cluster of buildings

Siddiqa

Naqvi

Azam

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The wind flow around the buildings with different rooftops is studied numerically using large-eddy simulation (LES). The filtered Navier-Stokes equations in LES are used to compute the large eddies, whereas the dynamic Smagorinsky subgrid-scale (SGS) model calculates the small eddies. A turbulent spot method is applied for the synthesis of artificial turbulent fields at the inlet. In this separated and reattached flow, our aim is to analyze the wakes’ vortical structure along with the buildings of different heights and shapes. A large number of engineering applications involve precise predictions of the airflow around buildings to ensure performance and safety. To validate the numerical solver, a comparison is performed with the earlier reported numerical and experimental data. The turbulent flow characteristics are discussed in terms of instantaneous flow structure and time-averaged statistical flow quantities. All the cases are simulated for a Reynolds number [Formula: see text] to understand the turbulent airflow patterns. The flow shows a separable bubble at the leading edge of the rooftop of the building that leads to recirculation at the lee side of the first row of buildings. Due to the recirculation, the suction arises near the leading edge of the building to assure a continuous flow of air around the obstacles. Further, Reynold stresses show high momentum fluxes in the frontal region of the buildings.

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Aerodynamic Characteristics and Lateral Displacements of a Set of Two Buildings in a Linked Tall Building System

Cited by 7 publications

References 39 publications

Electrochemical Seismic Design and Artificial Intelligence System Modeling of High-Rise Steel Structure Buildings

Electrochemical Seismic Design and Artificial Intelligence System Modeling of High-Rise Steel Structure Buildings

Multivariate Analysis of Concrete Image Using Thermography and Edge Detection

Large-eddy simulation of airflow dynamics around a cluster of buildings

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