scholarly journals Reliability Analysis of a Steel Structure with Potentially Brittle Steel Members

2018 ◽  
Vol 381 ◽  
pp. 012128
Author(s):  
Yanshuo Mai ◽  
Yi Chang ◽  
Linli Yi ◽  
Ying Chen
Keyword(s):  
Reliability Analysis ◽  
Steel Structure ◽  
Steel Members

scholarly journals Experimental Study on the Behavior of Tension Member Under Rupture

2021 ◽  
Keyword(s):  
Experimental Study ◽  
Tensile Force ◽  
Steel Structure ◽  
Steel Structures ◽  
Structural Members ◽  
Steel Members ◽  
Tension Member ◽  
Strong Relation ◽  
Almost All ◽  
Tension Members

Abstract. A steel structure is naturally lighter than a comparable concrete construction because of the higher strength and firmness of steel. Nowadays, the growth of steel structures in India is enormous. There are so many advantages in adopting the steel as structural members. Almost all high-rise buildings, warehouses & go-downs are steel structures and even some of the commercial buildings are made of steel. Tension members are the elements that are subjected to direct axial load which tends in the elongation of the structural members. Even today bolted connections play a major role in the connection of hot rolled structural steel members. In this experimental study the behavior of tension members (TM) such as plates, angles & channels have been studied under axial tensile force. There is strong relation between pitch and gauge (with in the specified limit as per IS 800:2007) in determining the rupture failure plane. In this study we intensively tested the behaviour of TM for different fasteners pattern by changing the pitch, gauge, end & edge distance and by adopting the different patterns or arrangements of bolted connection in it.

scholarly journals Mechanical Behavior of Damaged H-Section Steel Structure

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Xibing Hu ◽  
Rui Chen ◽  
Yuxuan Xiang ◽  
Yafang Chen ◽  
Qingshan Li
Keyword(s):  
Cross Sections ◽  
Elastic Moduli ◽  
Mechanical Test ◽  
Steel Structure ◽  
Steel Structures ◽  
Computational Accuracy ◽  
Cross Sectional ◽  
Steel Columns ◽  
Steel Members ◽  
The Cross

Steel structures are usually damaged by disasters. According to the influence law of the damage on the elastic modulus of steel obtained by the mechanical test of damaged steel, the average elastic moduli of H-section steel members were analyzed. The equations for calculating the average elastic moduli of damaged H-section steel members at different damage degrees were obtained. By using the analytical cross-sectional method, the cross-sectional M-Φ-P relationships and the dimensionless parameter equations of the H-sections in the full-sectional elastic distribution, single-sided plastic distribution, and double-sided plastic distribution were derived. On the basis of the cross-sectional M-Φ-P relationships and dimensionless parameters of actual steel members, the approximate calculation equations for the damaged cross sections were obtained. The Newmark method was used to analyze the deformation of damaged steel columns. Analytical results show good agreement with the test results. The equations and methods proposed in this study have high computational accuracy, and these can be applied to the cross-sectional M-Φ-P relationships and deformation calculation of damaged steel members.

Calculating Temperature Distribution in Concrete Encased H-Section Steel Column in Fires Using TFIELD

2012 ◽  
Vol 204-208 ◽  
pp. 3445-3449
Author(s):  
Yong Jun Liu ◽  
Ran Bi ◽  
Yan Wang
Keyword(s):  
Temperature Distribution ◽  
Construction Materials ◽  
Local Buckling ◽  
Steel Structure ◽  
Structural Members ◽  
Additional Advantage ◽  
Natural Fire ◽  
Standard Fire ◽  
Steel Members ◽  
Steel Column

Steel–concrete composite columns are used extensively in modern buildings in recent decades due to the benefits of combining two construction materials: reinforced concrete is inexpensive, massive, and stiff, while steel members are strong, lightweight, and easy to assemble. For concrete-encased composite structural members, an additional advantage is that the concrete used for encasing a structural steel not only increases its stiffness, but also protects it from fire damage and local buckling failure. Traditionally, the fire resistance of composite structural members has been determined in standard fire tests, with the temperature-time curves representing more severe heating conditions compared to that which occurs in many typical natural fire compartments. To design a concrete encased H-section steel structure safely and economically, it is necessary to calculate temperature distribution in composite steel-concrete columns under natural fire. In this paper, the program TFIELD written by first author is used to calculate the temperature distribution in a concrete encased H-section steel column under natural fire and ISO 834 fire. The calculating results under the standard ISO 834 fire and a natural fire have been compared which exhibit obvious differences.

Study on Establishment and Transformation of Coordinate System of Steel Structure in 3D Software

2014 ◽  
Vol 501-504 ◽  
pp. 2541-2545
Author(s):  
Kai Sun ◽  
Lu Shuang Wei ◽  
Li Xuan ◽  
Lun Gang Zhou
Keyword(s):  
Coordinate System ◽  
3D Visualization ◽  
Local Coordinate System ◽  
Steel Structure ◽  
Structure Design ◽  
Global Coordinate System ◽  
3D Space ◽  
Steel Members ◽  
Safe Condition ◽  
3D Software

The 3D visualization design of steel structure under the CAD environment needs to work in the global coordinate system (WCS), but design of various steel members in the 3D space must be completed in the local coordinate system (UCS), so it is perplexing for the conversion and calculation between UCSi (i=1,2,3....n) and WCS. It is proved that the maize grains are not polluted and food production is in safe condition. The article describes classification of several common coordinate systems, discuss the method of setting up coordinates system. Describe the process of type convertion of coordinate system in steel structure design and detailing softwares, and explained the advantage of the application in the real world project.

Reliability Analysis of Saddle-Shaped Cable Structure

2015 ◽  
Vol 744-746 ◽  
pp. 226-229
Author(s):  
Bin Li ◽  
Zhan Sheng Liu ◽  
Jian He ◽  
Rui Long Xu
Keyword(s):  
Reliability Analysis ◽  
Failure Modes ◽  
Steel Structure ◽  
Element Model ◽  
Cable Structure ◽  
Mechanics Performance ◽  
New Type ◽  
New Form ◽  
Prestressed Steel Structure ◽  
The Finite Element Model

Saddle-shaped cable structure is a new form of prestressed structure. Its reliability need to be analyzed for a new type structure. According to the different failure modes, the finite element model of prestressed steel structure is established. By using APDL language, the program is created. Finally, the reliability index of the model for different failure modes is got by reliability analysis. The results Provides reference basis for mechanics performance evaluation of prestressed structure.

Simplified Calculation of Internal Force of Steel Structure in Torsion

2013 ◽  
Vol 444-445 ◽  
pp. 12-17
Author(s):  
Xin Chen ◽  
Jun Ping Wang ◽  
Xin Yan
Keyword(s):  
Differential Equations ◽  
Steel Structure ◽  
Internal Force ◽  
Exact Results ◽  
Thin Walled Structures ◽  
Steel Members ◽  
Engineering Designs ◽  
Thin Walled ◽  
Simplified Calculation ◽  
Higher Order Differential Equations

It cant be ignored when steel members generating forces and stresses in torsion. To get the exact results, you need to solve several higher order differential equations, and it is much difficult for actual engineering designs. Based on Elastic theory of thin-walled structures, this thesis tries to introduce an approximate, convenient and high-precision way to solve problems about torsion.

scholarly journals Advanced Seismic Retrofit of a Mixed R/C-Steel Structure

Buildings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 241 ◽  
Author(s):  
Gloria Terenzi ◽  
Caterina Bazzani ◽  
Iacopo Costoli ◽  
Stefano Sorace ◽  
Paolo Spinelli
Keyword(s):  
Reinforced Concrete ◽  
Mechanical Characteristics ◽  
Structural Response ◽  
Steel Structure ◽  
Element Model ◽  
Seismic Retrofit ◽  
Fluid Viscous Dampers ◽  
Steel Members ◽  
Structural Details ◽  
The Finite Element Model

A study concerning the performance assessment and enhanced retrofit of public buildings originally designed without any anti-seismic provisions is presented herein. A representative structure belonging to this class was demonstratively examined, i.e., a school built in Italy in the early 1970s, before a coordinate national Seismic Standard was issued. The building is characterized by a mixed reinforced concrete (ground storey)–steel (first and second storey) frame skeleton. An extensive on-site experimental investigation was developed in the first step of the study, which helped identify the mechanical characteristics of the constituting materials, and re-draw the main structural details. Based on these data, and relevant updates of the finite element model of the structure, the seismic assessment analyses carried out in current conditions highlighted several performance deficiencies, in both the reinforced concrete and steel members. An advanced seismic retrofit hypothesis of the building was then designed, consisting of the installation of a set of dissipative braces incorporating fluid viscous dampers as protective devices. This solution makes it possible to attain an elastic structural response up to the maximum considered normative earthquake level, while at the same time causing more limited architectural intrusion and lower costs as compared to conventional rehabilitation strategies.

Overall Stability of Cold-Formed Steel Lipped Channel Axially Compressed Members with Batten Plates

2011 ◽  
Vol 94-96 ◽  
pp. 953-957
Author(s):  
De Fa Sun
Keyword(s):  
Bearing Capacity ◽  
Steel Structure ◽  
Calculation Methods ◽  
Steel Members ◽  
Overall Stability ◽  
Cold Formed Steel ◽  
Thin Walled ◽  
Flexural Torsional Buckling ◽  
Warpage Deformation ◽  
Specific Number

Batten plates can play a significant role in reducing the bearing capacity of the entire component and preventing the upward warpage deformation in the opening section. The specific number of batten plates should be calculated for the open cold-formed thin-walled steel structure. By theoretical analysis, this study develops the flexural-torsional buckling formula for the open lipped-channel section cold-formed thin-walled axially compressed members with batten plates. The calculating results show that, according to the configuration rule with 80 iy space between batten plates along the opening direction in the open thin-walled steel members, the warpage deformation will be effectively prevented in the opening direction. Besides, the bearing capacity of the entire member will be increased. The proposed calculation methods can actively complement the existing code.

Investigation of Instability for a Sub-Framed Steel Structure at Elevated Temperatures

2016 ◽  
Vol 16 (01) ◽  
pp. 1640006 ◽  
Author(s):  
Y. Hu ◽  
R. J. Plank
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
High Temperatures ◽  
Elevated Temperatures ◽  
Research Work ◽  
Steel Structure ◽  
Inelastic Behavior ◽  
Framed Structures ◽  
Steel Members ◽  
Element Simulation

Experimental evidence demonstrates the complexity of beam-to-column connections at elevated temperatures and its performance has been identified in association with instability of steel members or steel-framed structures. This paper presents a research work on the inelastic behavior of a sub-framed structure at high temperatures, adopting a component-based model to represent restraints to steel members, then produced by finite element simulation, to demonstrate performance of sub-framed structures at elevated temperatures. The finite element simulation demonstrates that instability of steel members in a sub-framed structure is associated with temperature-dependent material properties (e.g. strength or deformation) of bolted connections at the ends of steel members. In addition, connection failure mechanism is very much dependent on connection components already identified, and their strength and ductility. Instability of steel members in catenary action has also been discussed for high temperatures in this paper.

Sign in / Sign up

Export Citation Format

Share Document