Wind and Structures

  • 제24권2호
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  • Pages.95-118
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  • 2017
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Effect of internal angles between limbs of cross plan shaped tall building under wind load

  • Kumar, Debasish (Civil Engineering Department, Indian Institute of Engineering Science and Technology) ;
  • Dalui, Sujit Kumar (Civil Engineering Department, Indian Institute of Engineering Science and Technology)
  • 투고 : 2016.08.12
  • 심사 : 2016.11.26
  • 발행 : 2017.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

The present study revealed comparison the pressure distribution on the surfaces of regular cross plan shaped building with angular cross plan shaped building which is being transformed from basic cross plan shaped building through the variation of internal angles between limbs by $15^{\circ}$ for various wind incidence angle from $0^{\circ}$ to $180^{\circ}$ at an interval of $30^{\circ}$. In order to maintain the area same the limbs sizes are slightly increased accordingly. Numerical analysis has been carried out to generate similar nature of flow condition as per IS: 875 (Part -III):1987 (a mean wind velocity of 10 m/s) by using computational fluid dynamics (CFD) with help of ANSYS CFX ($k-{\varepsilon}$ model). The variation of mean pressure coefficients, pressure distribution over the surface, flow pattern and force coefficient are evaluated for each cases and represented graphically to understand extent of nonconformities due to such angular modifications in plan. Finally regular cross shaped building results are compared with wind tunnel results obtained from similar '+' shaped building study with similar flow condition. Reduction in along wind force coefficients for angular crossed shaped building, observed for various skew angles leads to develop lesser along wind force on building compared to regular crossed shaped building and square plan shaped building. Interference effect within the internal faces are observed in particular faces of building for both cases, considerably. Significant deviation is noticed in wind induced responses for angular cross building compared to regular cross shaped building for different direction wind flow.

키워드

참고문헌

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피인용 문헌

  1. Effect of corner modifications on 'Y' plan shaped tall building under wind load vol.30, pp.3, 2020, https://doi.org/10.12989/was.2020.30.3.245
  2. Comparison of aerodynamic coefficients of various types of Y-plan-shaped tall buildings vol.21, pp.7, 2020, https://doi.org/10.1007/s42107-020-00265-9
  3. Large-Eddy Simulation (LES) on the Square and Triangular Tall Buildings to Measure Drag Force vol.2021, pp.None, 2017, https://doi.org/10.1155/2021/6666895
  4. Aerodynamic modifications for reduction of wind loads on cross plan shaped tall building vol.33, pp.2, 2017, https://doi.org/10.12989/was.2021.33.2.123