scholarly journals Analysis of Wind Load Effect on C-Shape Tall Building with and Without Shear Wall

2021 ◽  
Vol 9 (10) ◽  
pp. 566-572
Author(s):  
Mr. Ankur Srivastava
Keyword(s):  
Shear Wall ◽  
Wind Load ◽  
Tall Building ◽  
Wind Pressure ◽  
Wind Force ◽  
Comparative Result ◽  
Load Effect ◽  
Story Drift ◽  
Codal Provisions

Abstract: Since land is scarce in metropolitan locations, it's common for tall building to be erected in C form. With the use of software ETABS 2019, this study examines the features of wind-induced story displacement and story drift operating on tall Cshaped models, with and without shear wall. Also, empirical formulae are used for manual calculations and to obtain the wind force and designed wind pressure on C-shaped tall building using codal provisions of IS 875 (Part 3) : 2015, also its applicability has been validated by a case study. For tall C-shaped buildings, this study gives a comparative result on the effect of wind load on building, with & without shear wall on behalf of maximum story displacement and story drift. Keywords: Plan irregularity, shear wall, wind load, ETABS 19

Wind Force on Tall Structure: An Approach From SPH

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Ananna Ahmed ◽  
Abdullah Hil Baki ◽  
Munaz Ahmed Noor
Keyword(s):  
Structural Engineering ◽  
Model Simulation ◽  
Wind Load ◽  
Tall Building ◽  
Test Method ◽  
Wind Pressure ◽  
Wind Force ◽  
Wide Range ◽  
Particle Hydrodynamics ◽  
Tall Structure

Wind pressure calculation for tall building frame has always been an extensive job. Usual methods used to estimate wind load are Wind tunnel test method and Finite Element Method and specifications has been derived. In this research, with a view to eliminating drawbacks of these methods and providing a visual interpretation of wind flow a third method is introduced using Smooth Particle Hydrodynamics (SPH) Approach. A model simulation was performed by a SPH software named SPHysics to calculate the pressure exerted on the structure and to derive a graphical interpretation of flow pattern using Para View. Values of pressure at different elevation of the building that actually occurs when wind with certain velocity flows through a tall building are found. From the data found, height vs. pressure graphs are generated which clearly supports the proportional relationship between these two parameters even with triangular and parabolic variation. Again, velocity vs. pressure graphs are plotted which also justifies inter-relationship of proportionality. This is a qualitative comparison not a quantitative one as there is many limitations regarding technicality, computer capacity, and time. These values may be crosschecked with the values found from conventional methods when more precise and suitable boundary conditions can be used in simulation. In future, with intricate detailing and suitable three dimensional modeling, more accurate value of pressure can be found with wide range of applicability. The authors are expecting derivation of two equations as a function of height and velocity to calculate wind load to use in design if further proceeding is possible. This can offer a significant benefit of simplicity for users and can be beginning a new era of using SPH in structural engineering.   Keywords - Wind force, tall structure, Particle Hydrodynamics Approach

Determination of Basic Wind Velocity for Wind Load-Governed Limit State

2019 ◽  
Author(s):  
Ji Hyeon Kim ◽  
Hae-Sung Lee
Keyword(s):  
Wind Velocity ◽  
Reliability Index ◽  
General Procedure ◽  
Limit State ◽  
Wind Load ◽  
Wind Pressure ◽  
Load Factor ◽  
Load Effect ◽  
Design Life ◽  
Target Reliability Index

<p>This paper proposes a general procedure for evaluating a nominal value of wind velocity for a wind load- governed limit state to secure a target reliability index during the design life of a structure. The nominal value of wind velocity, referred to as a basic wind velocity, and wind load factor should be determined so that the factored wind load effect secures a target reliability index for a wind load-governed limit state. In this study, the analytical form of the return period of the basic wind velocity is expressed as a function of the target reliability index, wind load factor, and statistical parameters of wind pressure, which are derived as linear functions of the coefficient of wind velocity. The proposed approach is applied to the Korean Highway Bridge Design Code-Cable supported Bridge, which specifies the design life of a structure as 100- and 200-year.</p>

Wind-resistant design and equivalent static wind load of base-isolated tall building: A case study

2020 ◽  
Vol 212 ◽  
pp. 110533 ◽  
Author(s):  
Zhihao Li ◽  
Guoqing Huang ◽  
Xinzhong Chen ◽  
Ying Zhou ◽  
Qingshan Yang
Keyword(s):  
Wind Load ◽  
Tall Building ◽  
Equivalent Static Wind Load

Wind load on irregular plan shaped tall building - a case study

2014 ◽  
Vol 19 (1) ◽  
pp. 59-73 ◽  
Author(s):  
Souvik Chakraborty ◽  
Sujit Kumar Dalui ◽  
Ashok Kumar Ahuja
Keyword(s):  
Wind Load ◽  
Tall Building

Analysis of Wind Load Effect on Ship Loader in Shipping Process

2013 ◽  
Vol 770 ◽  
pp. 155-158
Author(s):  
Meng Long Zhou ◽  
Bin Lin ◽  
Xu Zhang ◽  
Xiao Feng Zhang ◽  
Peng Fei Liu
Keyword(s):  
Dynamic Analysis ◽  
Static Load ◽  
Wind Load ◽  
Wind Pressure ◽  
Analysis Method ◽  
Load Effect ◽  
Turbulent Wind ◽  
Analysis Process ◽  
Sea Wind ◽  
Random Vibration Analysis

Research about sea wind load effect on ship loader is completed in this paper. Entity modeling method and solid element is used in the process of finite element modeling. Sea wind is divided into the steady wind and the turbulent wind. The steady wind is disposed as the constant speed wind which can be converted to wind pressure. After the static load solution, modal analysis is conducted which is essential for the following dynamic analysis. Because turbulent wind has random amplitude, direction and frequency, random vibration analysis method is used in the dynamic analysis process. With the results from the three representative positions, it is concluded that the displacement size and dynamic response intensity is in direct proportion to the height of the position.

Simultaneous measurement of wind velocity field and wind forces on a square tall building

2018 ◽  
Vol 21 (15) ◽  
pp. 2241-2258 ◽  
Author(s):  
Gongbo Zu ◽  
Kit Ming Lam
Keyword(s):  
Particle Image Velocimetry ◽  
Vortex Shedding ◽  
Large Scale ◽  
Particle Image ◽  
Phase Relationship ◽  
Tall Building ◽  
Wind Pressure ◽  
Wind Force ◽  
Force Relation ◽  
Image Velocimetry

Vortex shedding from a tall building is known to be responsible for the quasi-periodic across-wind force exerted on the building. This article unveils the exact relationship between the vortex shedding pattern and the fluctuating across-wind force. Simultaneous particle-image velocimetry and pressure measurements are carried out on a square-plan tall building model in the wind tunnel toward an understanding of the velocity–pressure–force relation for across-wind force generation on the building. A collection of instantaneous wind flow patterns and synchronized wind pressure distributions suggests the existence of full periods of vortex shedding from the building. The results are further analyzed using the conditional sampling method by which the roles of development and shedding of large-scale vortices in the building wake on the generation of peak across-wind forces are evidently found. Furthermore, quasi-periodicity of across-wind excitation is clearly confirmed with Hilbert transform of the across-wind force signal. The phase averaging technique is applied to the particle-image velocimetry flow fields and distinct vortex shedding patterns from the building are observed for most of the measurement time, together with an evident phase relationship with the across-wind forces.

Analysis of Wind Load Effect on the Roof of Low-Rise Building in the Mountain Terrain

2011 ◽  
Vol 382 ◽  
pp. 176-182
Author(s):  
Xing Qian Peng ◽  
Ling Lin Shi
Keyword(s):  
Structural Damage ◽  
Wind Load ◽  
Wind Pressure ◽  
Practical Significance ◽  
Sine Function ◽  
Negative Effects ◽  
Load Effect ◽  
Ansys Cfx ◽  
Mountain Terrain ◽  
The Hill

The wind conditions of the low-rise building in the mountain terrain are different because they have the characteristics of different landforms. When the typhoon comes, the possibility of structural damage is increasing by the negative effects of wind in the special topography. By establishing a sine function of outline of the hill, this paper makes a CFD(Computational Fluid Dynamics) numerical simulation about the low-rise building around the hills with four different height. Using ANSYS-CFX software as calculating platform, it put forward the roof wind load effect of the Low-rise building by study the characteristics of the hill, the law of wind pressure distribution and the influence to roof wind load by wind direction and the high of the hill, the conclusions which can provide a reference for wind-resistant design have practical significance.

Wind Pressure and Wind-Induced Vibration of Heliostat

2008 ◽  
Vol 400-402 ◽  
pp. 935-940 ◽  
Author(s):  
Ying Ge Wang ◽  
Zheng Nong Li ◽  
Bo Gong ◽  
Qiu Sheng Li
Keyword(s):  
Dynamic Response ◽  
Wind Direction ◽  
Wind Load ◽  
Wind Pressure ◽  
Induced Response ◽  
Vertical Angle ◽  
Lateral Direction ◽  
Direction Angle ◽  
Wind Pressures ◽  
Fluctuating Wind

Heliostat is the key part of Solar Tower power station, which requires extremely high accuracy in use. But it’s sensitive to gust because of its light structure, so effect of wind load should be taken into account in design. Since structure of heliostat is unusual and different from common ones, experimental investigation on rigid heliostat model using technology of surface pressure mensuration to test 3-dimensional wind loads in wind tunnel was conducted. The paper illustrates distribution and characteristics of reflector’s mean and fluctuating wind pressure while wind direction angle varied from 0° to 180° and vertical angle varied from 0° to 90°. Moreover, a finite element model was constructed to perform calculation on wind-induced dynamic response. The results show that the wind load power spectral change rulers are influenced by longitudinal wind turbulence and vortex and are related with Strouhal number; the fluctuating wind pressures between face and back mainly appear positive correlation, and the correlation coefficients at longitudinal wind direction are smaller than those at lateral direction; the fluctuating wind pressures preferably agree with Gaussian distribution at smaller vertical angle and wind direction angle. The wind-induced response and its spectrums reveal that: when vertical angle is small, the background responsive values of reflector’s different parts are approximately similar; in addition, multi-phased resonant response occurring at the bottom. With the increase of , airflow separates at the near side and reunites at the other, as produces vortex which enhances dynamic response at the upper part.

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