Wind and Structures

  • 제35권6호
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  • Pages.369-383
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  • 2022
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Characteristics, mathematical modeling and conditional simulation of cross-wind layer forces on square section high-rise buildings

  • Ailin, Zhang (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture) ;
  • Shi, Zhang (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture) ;
  • Xiaoda, Xu (Central Research Institute of Building and Construction CO., LTD. ) ;
  • Yi, Hui (School of Civil Engineering, Chongqing University) ;
  • Giuseppe, Piccardo (Department of Civil, Chemical and Environmental Engineering - DICCA, University of Genoa)
  • 투고 : 2022.08.22
  • 심사 : 2022.11.09
  • 발행 : 2022.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Wind tunnel experiment was carried out to study the cross-wind layer forces on a square cross-section building model using a synchronous multi-pressure sensing system. The stationarity of measured wind loadings are firstly examined, revealing the non-stationary feature of cross-wind forces. By converting the measured non-stationary wind forces into an energetically equivalent stationary process, the characteristics of local wind forces are studied, such as power spectrum density and spanwise coherence function. Mathematical models to describe properties of cross-wind forces at different layers are thus established. Then, a conditional simulation method, which is able to ex-tend pressure measurements starting from experimentally measured points, is proposed for the cross-wind loading. The method can reproduce the non-stationary cross-wind force by simulating a stationary process and the corresponding time varying amplitudes independently; in this way the non-stationary wind forces can finally be obtained by combining the two parts together. The feasibility and reliability of the proposed method is highlighted by an ex-ample of across wind loading simulation, based on the experimental results analyzed in the first part of the paper.

키워드

과제정보

This study is supported by the National Natural Science Foundation of China (52108431) and Beijing Natural Science Foundation (8222013). This work is funded by the Project supported by Beijing Postdoctoral Research Foundation (2021-ZZ-115), the Pyramid Talent Training Project of Beijing University of Civil Engineering and Architecture (JDYC20220806) and the Research Ability Enhancement Program for Young Teachers of Beijing University of Civil Engineering and Architecture (X21071). It is also supported by the 111 Project on Grant B18062.

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