scholarly journals A stochastic approach for the wind load effect on steel structures

2016 ◽  
Vol 69 (2) ◽  
pp. 137-145 ◽  
Author(s):  
Thiago Dias dos Santos ◽  
Gustavo Henrique Siqueira ◽  
Luiz Carlos Marcos Vieira Junior
Keyword(s):  
Steel Structures ◽  
Stochastic Approach ◽  
Wind Load ◽  
Load Effect

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>

scholarly journals Component Combination Rules of Wind Load Effects of Building Structures

2020 ◽  
Vol 10 (24) ◽  
pp. 8775
Author(s):  
Haiwei Guan ◽  
Yuji Tian
Keyword(s):  
Extreme Values ◽  
Simulation Method ◽  
Wind Load ◽  
Combination Method ◽  
Wind Effect ◽  
Building Structures ◽  
Combination Rules ◽  
Load Effect ◽  
Mean Values ◽  
Standard Deviations

Under the action of the same wind azimuth, the extreme values of the wind load effect components of building structures are generated in the along-wind, cross-wind, vertical, and torsional directions. In designing the wind-resistant structure, the extreme values of effect components need to be combined to determine the internal force envelope values of members. Complete quadratic combination (CQC) and Turkstra combination rules are often used to determine the combination value of extreme values of wind effect components. The extreme probability distribution expressions of the CQC, and the Turkstra and approximate rules, are derived. The simplified combination Equations and combination coefficients of the CQC and Turkstra approximate rules are proposed in this paper. We use the combination Equations and Monte Carlo simulation method to analyze the accuracy of Turkstra and its approximate rules. The results show that the combination extreme is associated with the correlation coefficients, mean values, ratios of standard deviations, and fluctuating extremes of effect components. The errors between Turkstra and its approximate rules are small when load effect components show a positive correlation. The errors are largest when the standard deviations of components are equal. Our research results provide a theoretical basis for the combination method of wind load effect components of building structures.

Study on a Large-Span Steel Truss Roof Isolation Bearings for Wind Load Effect Isolation Effect

2013 ◽  
Vol 405-408 ◽  
pp. 1022-1027
Author(s):  
Zi Fen Fang ◽  
Zhi Qiang Zhang ◽  
Fei Liu
Keyword(s):  
Financial Services ◽  
Base Isolation ◽  
Wind Load ◽  
Isolation Effect ◽  
Load Effect ◽  
Large Span ◽  
Roof Structure ◽  
Rubber Bearing ◽  
Steel Truss ◽  
Load Effects

The isolation of large-span Steel Truss Roof structure is developed on the basis of base isolation. The isolation of large-span Steel Truss Roof structure is to limit the transmission of wind load effect to the substructure. Based on the engineering background, we mainly discuss using rubber bearing isolation structure wind load effects. This paper will explains and demonstrates the isolation mechanism of Large-span Steel Truss Structure,and than test and verify isolation effect by Calculating through the analysis of wind tunnel tests conducted on the Yancheng financial services center, which the steel truss roof isolation bearings for wind load effect isolation effect.

Reliability Assessment under Combinations of Snow Load Effect: The Lightweight Steel Structures with Gabled Frames and Components Designs

2012 ◽  
Vol 166-169 ◽  
pp. 1954-1957
Author(s):  
Ying Chun Cao ◽  
Ming Liu ◽  
Yuan Qing Wang ◽  
Yan Nian Zhang
Keyword(s):  
Steel Structures ◽  
Dead Load ◽  
Reliability Factor ◽  
Geometrical Meaning ◽  
Load Effect ◽  
Snow Load ◽  
Non Linear Programming ◽  
Lightweight Steel ◽  
Reliability Indicators ◽  
Reliability Indicator

Purpose: to assess reliability factor of Gable Framed Lightweight Steel Structural and Components, under combination of load effect of permanent loads and snow loads. Method: JC method is adopted in the calculations. From reliability of geometrical meaning, transform the solving of reliability problem into the finding of minimum constraints, and calculate reliability indicators by using a non-linear programming called ‘Lingo’ software. Results: based on dead load plus snow load, and combination of dead load plus snow load and wind load, to calculate reliability indicator of structural components under axial tension, axial compression, and eccentric compression. Conclusion: when combined with snow load, reliability indicator (of Gable Framed Lightweight Steel Structures and Components) is less than the standard permitted reliability indicator, which is beta=3.2.

scholarly journals Wind load effect in topology optimization problems

2007 ◽  
Vol 75 ◽  
pp. 012048 ◽  
Author(s):  
R Zakhama ◽  
M M Abdalla ◽  
Z Gürdal ◽  
H Smaoui
Keyword(s):  
Topology Optimization ◽  
Optimization Problems ◽  
Wind Load ◽  
Load Effect

Analysis of wind load effect on key components in a jack-up offshore platform

2020 ◽  
Vol 101 ◽  
pp. 102263 ◽  
Author(s):  
Guijie Liu ◽  
Yuanfang Sun ◽  
Benlei Zhong ◽  
Yingchun Xie ◽  
Atilla Incecik ◽  
...  
Keyword(s):  
Wind Load ◽  
Offshore Platform ◽  
Load Effect ◽  
Jack Up

Wind Load Analysis and the Structure Optimization Design of the Steel Structures with ANSYS

2010 ◽  
Vol 37-38 ◽  
pp. 1643-1646
Author(s):  
Zhao Xin Meng ◽  
Jian Xin Zhao ◽  
Shu Yang Wang ◽  
Nan Zhou
Keyword(s):  
Optimization Design ◽  
Rapid Development ◽  
Three Dimensional ◽  
Steel Structure ◽  
Steel Structures ◽  
Clean Energy ◽  
Wind Load ◽  
Three Dimensional Model ◽  
Design Standards ◽  
Bio Oil

In recent years, the bio-oil, as a new kind of clean energy, has been paid with more attentions and has been in rapid development. Meanwhile, the design and research of the bio-oil equipment also has made a great progress. This paper presented the research of the main unit installed steel structure which was with the 3000t yearly capacity. It analyzed and researched the structure and load characteristics of the bio-oil main unit installed steel structure. According to the related research theory and design standards, by using software ANSYS establish the three-dimensional model of the main unit installed steel structure. The paper also analyzed and calculated the wind load. The model structure has been optimized on the foundation of the analyzing preliminary model foundation. The stability of the equipment has been enhanced.

The Acrylic Spike Design of British Pavilion, 2010 EXPO

2011 ◽  
Vol 255-260 ◽  
pp. 1558-1562
Author(s):  
De Can Mao ◽  
Wei Xing Li ◽  
Marco Cerini
Keyword(s):  
Mechanical Properties ◽  
Wind Tunnel ◽  
Structural Design ◽  
Wind Load ◽  
Structure Design ◽  
Creep Tests ◽  
Load Effect ◽  
Service Period ◽  
Structural Engineers

Innovative architectural acrylic spike application leads to a great challenge for structural engineers for the structural design of Shanghai Expo British pavilion. A set of mechanical properties has been proposed to provide a reference for the application of acrylic material in structure design area. The wind tunnel, fatigue and creep tests and research for acrylic spike were carried out to determine the wind load effect of spike and ensure that the spikes are not damaged under fatigue and creep effects during 1.5 years service period.

scholarly journals Reducing the Impact of Wind Load with Shape of High Rise Buildings

2020 ◽  
Author(s):  
Nasra Mohammed Nasser Al-Azri ◽  
Sachin Kuckian ◽  
Himanshu Gaur
Keyword(s):  
Architectural Design ◽  
Lateral Displacement ◽  
Tall Buildings ◽  
Wind Load ◽  
Point Of View ◽  
Stability Parameters ◽  
Load Effect ◽  
High Rise ◽  
The Impact ◽  
Stable Shape

Recent Years, Many high rise buildings are being constructed across the world due to the increase in population. From the design point of view, lateral load such as earthquake and wind load should be taken into consideration while designing process. Architectural design of buildings sometimes leads towards difficult and unusual shape that challenges structural designers. The objective of this study is to assess the building behavior when subjected to wind load. To achieve this objective, different shapes of building such as pentagonal, triangular and circular building are assessed for stability. Parameters such as storey drift and lateral displacement are considered in order to find most effective and stable shape. The computer program ETABS is used for analysis. As the height of the building increases, wind load effect becomes significant and should be considered for designing. This could also be achieved by selecting most stable shape and appropriate structural system for tall buildings.

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