Column Effective Length Factor and Girder Parametric Analysis for the Components of Xinqiao International Airport Terminal

2011 ◽  
Vol 243-249 ◽  
pp. 897-902
Author(s):  
De Zhang Li ◽  
Da Yi Ding ◽  
Yuan Qing Wang ◽  
Li Yuan Liu ◽  
Hai Ying Wan
Keyword(s):  
Mechanical Properties ◽  
Stability Problem ◽  
Parametric Analysis ◽  
Steel Structure ◽  
Effective Length ◽  
Box Girders ◽  
Effective Length Factor ◽  
Airport Terminal ◽  
Curved Girders ◽  
Box Columns

The steel structure of Hefei Xinqiao International Airport Terminal was taken as a background of this article. The large-span frame is a typical frame of the structure. The curved box-girders are the critical parts of the whole frame. This paper focused on the mechanical properties of the curved girders, as well as the influence on box-columns connected with them. Stability problem is a key problem in the steel structure design, and effective length factor is a way to reflect the stability problem in code for design. In this paper, the whole model of the airport terminal was established to conduct eigenvalue buckling analysis to obtain effective length factors of the box-columns connected to the curved box-girder. In the finite model, a unified axial force was applied on the end of the box-column, and the elements of the box-columns and the adjacent members were refined. Then the effective length factors were derived through the buckling models. In this paper, the curved box-girders of Hefei airport building were studied using finite element software ANSYS. The local model of the curved box-girders were set up to study the mechanical properties of the curved girders including the ultimate capacity analysis. Parametric analysis of the girders was carried out, and the results could be used to guide the design. The results show that finite element method is a convenient way of calculating effective length factors for members with complex boundary conditions, and analysis of local models provides reasonable suggestions for design.

Parametric Analysis of Bearing Behavior for Curved Box-Girders of Large Span Steel Structure

2011 ◽  
Vol 243-249 ◽  
pp. 818-823 ◽  
Author(s):  
Zhong Hu ◽  
Da Yi Ding ◽  
Yuan Qing Wang ◽  
Li Yuan Liu ◽  
Hai Ying Wan
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Parametric Analysis ◽  
Steel Structure ◽  
Ultimate Bearing Capacity ◽  
Beam Axis ◽  
Steel Plates ◽  
Box Girders ◽  
Element Analysis ◽  
Airport Terminal

The curved box-girders of Hefei Xinqiao International Airport Terminal were taken as a background of this article. Aiming at the type of the cross section, thickness of the steel plates and curvature of the beam axis, parametric analysis was carried out to evaluate the ultimate bearing capacity of this kind of curved box-girder. Using the finite element analysis software ANSYS, the effects of former three parameters was calculated. From the results, it could be found out that the ultimate bearing capacity increases as the section aspect ratio grows, and it increases linearly as the thickness of the flange and web plate grows. In addition, the ultimate bearing capacity increased and decreased with the increment of the curvature of the beam axis R. The finite element results provided a theoretical basis for experimental research and analysis of the local models provided reasonable suggestions for design as well.

Nomograms for Determination of Effective Length of the Unregular Frames Based on Mechanics and Steel Structure

2014 ◽  
Vol 886 ◽  
pp. 402-407
Author(s):  
Da Tian Zhang ◽  
Dong Hua Zhou
Keyword(s):  
Steel Structure ◽  
Effective Length ◽  
Structure Stability ◽  
Displacement Method ◽  
Complex Situation ◽  
Stability Calculation ◽  
Effective Length Factor ◽  
Practical Engineering ◽  
Relevant Calculation

Determining the frame column effective length is a key part of the structure stability calculation in practical engineering. This specification for design of steel structure and specification for design of concrete are given in some relevant calculation formula and forms, but these formulas and tables can only be applied to the simple situation. In the complex situation, such as the frame column axial force and height is large, the formula is not applicable, may leads to unsafe results. In this paper. the formulas are deduced by using second-order displacement method in order to solve these problems,and the chart for determining the effective length is also obtained. The chart can be used to calculate the effective length factor quickly and concisely.

Study on Welding Deformation and Residual Stress of H-Section Beam Based on Finite Element Method

2017 ◽  
Vol 753 ◽  
pp. 305-309 ◽  
Author(s):  
Xu Lu
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Finite Element ◽  
Source Parameters ◽  
Welding Process ◽  
Steel Structure ◽  
Bottom Plate ◽  
Welding Deformation ◽  
Element Simulation ◽  
Main Components

The welding H-section beam has good mechanical properties with its superior structure. So they become the main components of steel structure and have been widely used. In this paper, the welded H-section beam is used as the research object. The finite element simulation model is established. The heat source parameters are determined. The deformation of the steel due to the welding process is studied. The results show that the bottom plate and the bottom plate inward bending is about 2.32mm cause by welding process. The residual stress can reach 400MPa.

scholarly journals Study on Elastic Global Shear Buckling of Curved Girders with Corrugated Steel Webs: Theoretical Analysis and FE Modelling

2018 ◽  
Vol 8 (12) ◽  
pp. 2457 ◽  
Author(s):  
Kangjian Wang ◽  
Man Zhou ◽  
Mostafa Hassanein ◽  
Jitao Zhong ◽  
Hanshan Ding ◽  
...  
Keyword(s):  
Parametric Analysis ◽  
Trigonometric Function ◽  
Theoretical Formula ◽  
Radius Of Curvature ◽  
Buckling Strength ◽  
Shear Buckling ◽  
Curved Girders ◽  
Corrugated Steel Web ◽  
Orthotropic Shells ◽  
Elastic Shear

Despite the construction of several curved prestressed concrete girder bridges with corrugated steel webs (CSWs) around the world; their shear behavior has seldom been investigated. Accordingly, this paper substitutes the lack of available information on the global elastic shear buckling of a plane curved corrugated steel web (PCCSW) in a curved girder. This is based on the equilibrium equations and geometric equations in the elastic theory of classical shells, combined with the constitutive relation of orthotropic shells. Currently, the global elastic shear buckling process of the PCCSW in a curved girder is studied, for the first time in literature, with an equivalent orthotropic open circular cylindrical shell (OOCCS) model. The governing differential equation of global elastic shear buckling of the PCCSW, as well as its buckling strength, is derived by considering the orthotropic characteristics of a corrugated steel web, the rational trigonometric displacement modes, Galerkin’s method and variational principles. Additionally, the accuracy of the proposed theoretical formula is verified by comparison with finite element (FE) results. Moreover, the expressions of the inner or outer folded angle and radius of curvature are given by the cosine theorem of the trigonometric function and inverse trigonometric function. Subsequently, parametric analysis of the shear buckling behavior of the PCCSW is carried out by considering the cases where the radius of curvature is constant or variable. This parametric analysis highlights the effects of web dimensions, height-to-thickness ratio, aspect ratios of longitudinal and inclined panels, corrugation height, curvature radius and folded angles on the elastic shear buckling strength. As a result, this study provides a theoretical reference for the design and application of composite curved girders with CSWs.

scholarly journals Mechanical Properties Research on Suspended-dome Structure with Discontinuous Support Under Different Parameters

2017 ◽  
Vol 11 (1) ◽  
pp. 303-314
Author(s):  
Yu Jinghai ◽  
Leng Ming ◽  
Zhang Zhongyu ◽  
Jiang Zhiyu ◽  
Wang Zhengkai
Keyword(s):  
Mechanical Properties ◽  
Parametric Analysis ◽  
Structural Parameters ◽  
Supporting System ◽  
Vertical Stiffness ◽  
Stiffness Constant ◽  
Support Reaction ◽  
Steel Consumption ◽  
Dome Structure ◽  
Scope Of Application

Introduction: For suspended-dome with big partial hole, two kinds of feasible plans were proposed. Method: One of the plans was to adjust suspended-dome’s members, and another to build auxiliary supporting system to support the suspended-dome with columns together. These kinds of suspended-dome’s main structural parameters include stiffness, member force, steel consumption, support reaction and stability, and parametric analysis is based on these parameters. Conclusion: Firstly,the scope of application was illustrated for the former plan. Then, an equivalent vertical stiffness algorithm was put forward for the latter plan. In the latter plan, limit stiffness constant was introduced to quantify the method for solving discontinuous support problem.

scholarly journals Effect on the Dynamic Behaviour of the Form in Airport Terminal Constructions with Biomimetic Roof

2018 ◽  
Vol 49 (2) ◽  
pp. 109-116
Author(s):  
Gonca Akcaer ◽  
Asena Soyluk
Keyword(s):  
Steel Structure ◽  
Building Design ◽  
Design Criterion ◽  
Seismic Zone ◽  
Bubble Dynamic ◽  
Long Span ◽  
Different Types ◽  
Airport Terminal ◽  
Wave Forms ◽  
And Function

In this study, on airport terminal building design, passing long span beams and the concept of biomimesis have been the design criteria; the use of a steel structure has been examined for supporting the design form. In the airport terminal building, steel roof types in smooth surfaced, single curved-arciform, and double-curved wave forms have been designed. The three different types of steel frame roof model have been designed with the forms frequently used within the scope of the biomimesis concept and provide a covering shaped like a bird's nest, bird wing and bubble. Dynamic analysis of the three different roof forms is according to the first-degree seismic zone and Z4 local ground class. As a result, in the long-span design criterion, the aesthetics and function influence each other and change the building's behaviour.

scholarly journals Mechanical Properties of Gas Main Steels after Long-Term Operation and Peculiarities of Their Fracture Surface Morphology

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 491 ◽  
Author(s):  
Volodymyr Hutsaylyuk ◽  
Pavlo Maruschak ◽  
Ihor Konovalenko ◽  
Sergey Panin ◽  
Roman Bishchak ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Surface ◽  
Damage Accumulation ◽  
Classification Scheme ◽  
Steel Structure ◽  
Term Operation ◽  
Gas Main ◽  
Structure Degradation ◽  
Main Pipelines

Regularities of steel structure degradation of the “Novopskov-Aksay-Mozdok” gas main pipelines (Nevinnomysskaya CS) as well as the “Gorky-Center” pipelines (Gavrilovskaya CS) were studied. The revealed peculiarities of their degradation after long-term operation are suggested to be treated as a particular case of the damage accumulation classification (scheme) proposed by prof. H.M. Nykyforchyn. It is shown that the fracture surface consists of sections of ductile separation and localized zones of micro-spalling. The presence of the latter testifies to the hydrogen-induced embrittlement effect. However, the steels under investigation possess sufficiently high levels of the mechanical properties required for their further safe exploitation, both in terms of durability and cracking resistance.

scholarly journals Inelastic Effective Length Factor of Nonsway Reinforced Concrete Columns

2009 ◽  
Vol 135 (9) ◽  
pp. 1034-1039 ◽  
Author(s):  
A. Bendito ◽  
M. L. Romero ◽  
J. L. Bonet ◽  
P. F. Miguel ◽  
M. A. Fernandez
Keyword(s):  
Reinforced Concrete ◽  
Concrete Columns ◽  
Effective Length ◽  
Reinforced Concrete Columns ◽  
Effective Length Factor

Design Study of Steel Structure Fire-Retardant Coatings under High Temperature (Fire) Conditions

2012 ◽  
Vol 594-597 ◽  
pp. 849-859
Author(s):  
Man Li Ou ◽  
Wei Jun Cao ◽  
Long Min Jiang ◽  
Hui Cao
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Fire Resistance ◽  
Fire Protection ◽  
Structural Damage ◽  
Fire Retardant ◽  
Steel Structure ◽  
Steel Structures ◽  
Strength And Stiffness ◽  
Fire Conditions

As the result of great changes occurring to mechanical properties under high temperature (fire) conditions, steel structures will soon lose the strength and stiffness and lead to structural damage. Through analysis of the steel structure fire resistance design methods under the conditions of high temperature (fire), this article explores the most used fire protection methods in steel structures—brushing or painting fire-resistant coatings, studies the fire-resistance theory of steel structure under fire conditions; in addition, the author proposes the reasonable thickness of the steel structure fire retardant coating of fire-resistant design through design examples.

Sign in / Sign up

Export Citation Format

Share Document