Investigating the effect of infill walls on steel frame structures

2018 ◽  
Vol 4 (1) ◽  
pp. 27
Author(s):  
Osman Fatih Bayrak ◽  
Seda Yedek ◽  
Muhammet Musab Erdem ◽  
Murat Bikce
Keyword(s):  
Steel Frames ◽  
Steel Frame ◽  
Frame Structure ◽  
Frame Structures ◽  
Infill Walls ◽  
Soft Story ◽  
Deformation Properties ◽  
Steel Frame Structures ◽  
Aerated Concrete ◽  
Steel Frame Structure

Infill walls consisting of materials such as hollow concrete, hollow clay and autoclaved aerated concrete bricks are not only preferred in reinforced concrete buildings but also in steel frame structures. It is a well-known fact that infill walls limit the displacement of frames under horizontal loads. However, they may also bring about certain problems due to being placed randomly in horizontal and discontinuously in vertical directions for some architectural reasons. Moreover, cracks in frame-wall joints are observed in steel frame structures in which ductile behaving steel and brittle behaving infill walls are used together. In this study, the effect of infill walls on steel frames has been investigated. In the steel frame structure chosen for the study, four different situations consisting of different combinations of infill walls have been modeled by using ETABS Software. Later, the pushover analyses have been performed for all the models and their results have been compared. As a result of the analyses done by using the equivalent diagonal strut model, it has been found out that infill walls limit the displacement of steel frames and increase the performance of a structure. However, it has been also determined that in the steel frame structure in which the infill walls have been placed discontinuously in vertical and asymmetrically in horizontal, infill walls may lead to torsional and soft story irregularities. As a result, it is possible to observe cracks in the joints of infill walls and steel frame, the deformation properties of which differ, unless necessary precautions are taken.

scholarly journals Optimization of concentrically braced steel frame structures based on SNI 1726:2019, SNI 1727:2020, SNI 1729:2020, and AISC 341-16

2021 ◽  
Vol 907 (1) ◽  
pp. 012010
Author(s):  
J Aloysius ◽  
J A Sumito ◽  
D Prayogo ◽  
H Santoso
Keyword(s):  
Steel Frame ◽  
Frame Structure ◽  
Frame Structures ◽  
Symbiotic Organisms Search ◽  
Safety Requirements ◽  
Concentrically Braced ◽  
Steel Frame Structures ◽  
Concentrically Braced Steel Frame ◽  
Symbiotic Organisms ◽  
Steel Frame Structure

Abstract Damages resulted from earthquakes are a loss in the economic sector. The structure of multi-story buildings needs an earthquake-proof design with higher performance to reduce such losses. By utilizing the metaheuristic algorithm, this study aims to identify the most compatible brace configuration and profile used in a concentrically braced steel frame structures with minimal total weight and that will meet the safety requirements. This algorithm is suitable owing to the fact that it is able to find solutions to any known optimization problem either through Particle Swarm Optimization (PSO), Symbiotic Organisms Search (SOS), or Differential Evolution (DE). The performance of these algorithms will demonstrated in a form of comparison through a case study of optimizing a 5-span, 6-story steel frame structure. These systems will determine the lightest frame weight, which also correlates to a lower construction cost, without compromising the constraints of SNI 1726:2019, SNI 1727:2020, SNI 1729:2020, and AISC 341-16. Based on the results of data processing, SOS is shown to achieve the highest algorithm performance compared to PSO and DE.

Standardization Study of Assembly Floor Slab in Steel Frame Structure

2014 ◽  
Vol 638-640 ◽  
pp. 244-249
Author(s):  
Ya Bo Wang ◽  
Gao Feng Dou ◽  
Chuan Hao Xi ◽  
Lei Qian ◽  
Han Ting Liu
Keyword(s):  
Steel Frame ◽  
Frame Structure ◽  
Frame Structures ◽  
Floor Slab ◽  
Steel Frame Structures ◽  
Assembly Floor ◽  
Steel Frame Structure ◽  
At Home

The types of assembly floor slab member and the present development situation of assembly floor slab standardization at home and abroad is presented in the article, as well as assembly floor slab layout schemes and its advantage and disadvantage is presented, and the assembly floor slab standardization scheme is proposed to promote the application of assembly floor slab in steel frame structures.

Collapsed Form Simulation of Styles of Different Structures under Earthquake Based on ANSYS/LS-DYNA

2011 ◽  
Vol 243-249 ◽  
pp. 6197-6201
Author(s):  
You Liang Fang ◽  
Bing Yin Gao ◽  
Jing Yao Duan
Keyword(s):  
Failure Mechanism ◽  
Seismic Waves ◽  
Steel Frame ◽  
Frame Structure ◽  
Frame Structures ◽  
Whole Process ◽  
Different Types ◽  
Steel Frame Structures ◽  
Earthquake Effects ◽  
Steel Frame Structure

In this paper, different types of steel frame structure under earthquake are adopted as the analyzed object of structural collapse. Seismic waves can be applyed into the structure in form of dynamic acceleration in ANSYS/LS-DYNA. The whole process of earthquake effects on the structure is simulated truly. It is helpful to realize and understand the failure mechanism and space mechanism of the different forms of steel frame structures. This paper can also provide a reference for reinforcement and maintenance of structure and a basis of anti-seism design of structure.

Experimental Research and Finite Element Analysis on Behavior of Steel Frame with Semi-Rigid Connections

2010 ◽  
Vol 168-170 ◽  
pp. 553-558
Author(s):  
Feng Xia Li ◽  
Bu Xin
Keyword(s):  
Architectural Design ◽  
Plastic Hinge ◽  
Steel Frames ◽  
Seismic Energy ◽  
Internal Force ◽  
Steel Frame ◽  
Frame Structure ◽  
Element Analysis ◽  
Rigid Deformation ◽  
Steel Frame Structure

Most steel beam-column connections actually show semi-rigid deformation behavior that can contribute substantially to overall displacements of the structure and to the distribution of member forces. Steel frame structure with semi-rigid connections are becoming more and more popular due to their many advantages such as the better satisfaction with the flexible architectural design, low inclusive cost and environmental protect as well. So it is very necessary that studying the behavior of those steel frame under cyclic reversal loading. On the basics of connections experiments the experiment research on the lateral resistance system of steel frame structure has been completed. Two one-second scale, one-bay, two-story steel frames with semi-rigid connections under cyclic reversal loading. The seismic behavior of the steel frames with semi-rigid connections, including the failure pattern, occurrence order of plastic hinge, hysteretic property and energy dissipation, etc, was investigated in this paper. Some conclusions were obtained that by employing top-mounted and two web angles connections, the higher distortion occurred in the frames, and the internal force distributing of beams and columns was changed, and the ductility and the absorbs seismic energy capability of steel frames can be improved effectively.

scholarly journals Analysis of second-order effects of constructions behaviour

2019 ◽  
Author(s):  
Raminta Venslavavičiūtė ◽  
Kęstutis Urbonas
Keyword(s):  
Steel Frame ◽  
Second Order ◽  
Frame Structure ◽  
Frame Structures ◽  
Order Effects ◽  
Rotational Stiffness ◽  
Frame Building ◽  
Steel Frame Structures ◽  
Second Order Effects ◽  
Rigid Joints

This paper presents the importance of the second-order effects in behaviour of steel frame structures. EN 1993-1-1 were distinguished three main methods: taking / without taking into account second order effects depending on the sensitivity of horizontal design effects and tolerance. Using these methods, the susceptibility of steel frame structures to second-order impacts is considered in accordance with EN 1993-1-1. The study was performed taking into account also the rotational stiffness of the joints of the frame structure. In this way, trying to determine the effect of the joint on the rotational rigidity makes the frame structure more sensitive to second order impacts. It is also considered a semi-rigid joints effects the general frame-tailed P-Δ and the second row stress. This establishes the link between the effects of the second-order and the semi-rigid joints in the overall (general) analysis. Frame-building sensitivity makes it possible to compare and measure the importance of such dependencies.

Vibration Mitigation Effect of a Friction Damper with Variable Resistances on the Steel Frame Structure

2011 ◽  
Vol 255-260 ◽  
pp. 2560-2567
Author(s):  
Peng Bo Zhang ◽  
Yu Ping Sun ◽  
Shi Chun Zhao
Keyword(s):  
Frictional Resistance ◽  
Seismic Energy ◽  
Steel Frame ◽  
Frame Structure ◽  
Strong Wind ◽  
Friction Damper ◽  
Friction Dampers ◽  
Moderate Earthquake ◽  
Steel Frame Structures ◽  
Steel Frame Structure

Analytical study was conducted to investigate effect of friction dampers on vibration control of steel frame structures. The friction dampers installed in a ten-storey sample frame structure have two levels of fictional resistances. Unlike the conventional friction damper which has one frictional resistance, the friction dampers with variable resistances (VRFD) can apply two levels of frictional resistances, the lower resistance of which is attended to absorb the seismic energy by a moderate earthquake or a strong wind, and the higher one of which is expected to dissipate the seismic energy induced by a severe earthquake. The time-historey analytical results of the sample frame have indicated that the VRFD could not only mitigate the seismic response of the frame structure under a moderate earthquake more effectively than the conventional frictional damper, but also provide the same level of damping effect to the structure under severe earthquake as the conventional one.

Shaking Table Tests on a Passive Equipment Isolation System for Earthquake Protection

2009 ◽  
Author(s):  
Maurizio De Angelis ◽  
Salvatore Perno ◽  
Anna Reggio ◽  
Gerardo De Canio ◽  
Nicola Ranieri
Keyword(s):  
Steel Frame ◽  
Shaking Table ◽  
Frame Structure ◽  
Shaking Table Tests ◽  
Isolation System ◽  
Industrial Plants ◽  
Steel Frame Structures ◽  
Rigid Mass ◽  
Passive Isolation ◽  
Steel Frame Structure

The present work refers to steel frame structures in industrial plants. A passive isolation system for seismic protection of a considerable equipment, already present on a frame support structure and rigidly constrained to it, is investigated through both numerical simulations (1+1 DOF system) and shaking table tests on a 1:5 scale two-story steel frame structure. The equipment (e.g. a pipeline, a compressor unit, ...) is modelled as a rigid mass. The optimal design is determined by minimizing the dynamic response of the isolated mass. In order to ensure strenght and serviceability, the response of the frame is also monitored.

scholarly journals Analytical Benchmark Solutions for Steel Frame Structures Subject to Local Buckling Effects

2000 ◽  
Vol 3 (3) ◽  
pp. 215-229 ◽  
Author(s):  
Philip Avery ◽  
Mahen Mahendran
Keyword(s):  
Finite Element ◽  
Steel Frames ◽  
Local Buckling ◽  
Element Model ◽  
Steel Frame ◽  
Frame Structures ◽  
Steel Frame Structures ◽  
Advanced Analysis ◽  
Shell Finite Element ◽  
Benchmark Solutions

Application of “advanced analysis” methods suitable for non-linear analysis and design of steel frame structures permits direct and accurate determination of ultimate system strengths, without resort to simplified elastic methods of analysis and semi-empirical specification equations. However, the application of advanced analysis methods has previously been restricted to steel frames comprising only compact sections that are not influenced by the effects of local buckling. A research project has been conducted with the aim of developing concentrated plasticity methods suitable for practical advanced analysis of steel frame structures comprising non-compact sections. This paper contains a comprehensive set of analytical benchmark solutions for steel frames comprising non-compact sections, which can be used to verify the accuracy of simplified concentrated plasticity methods of advanced analysis. The analytical benchmark solutions were obtained using a distributed plasticity shell finite element model that explicitly accounts for the effects of gradual cross-sectional yielding, longitudinal spread of plasticity, initial geometric imperfections, residual stresses, and local buckling. A brief description and verification of the shell finite element model is provided in this paper.

The Optimization Design of the Explosion-Proof Steel Frame Structure Considering the Material Plastic

2011 ◽  
Vol 243-249 ◽  
pp. 160-164
Author(s):  
Ya Ting Zang ◽  
Yong Sheng Zhang
Keyword(s):  
Optimization Design ◽  
Steel Structure ◽  
Construction Cost ◽  
Structure Design ◽  
Steel Frame ◽  
Frame Structure ◽  
Design Codes ◽  
Steel Frame Structures ◽  
Explosion Load ◽  
Steel Frame Structure

Taking the structure construction cost as the optimized goal, the optimization design is carried on the steel frame structure considering the material plastic, under the explosion load. According to the prevailing steel structure design codes GB50017-2002, the model of steel frame structures is established. The results show that the theory and calculation method is reasonable, which will have a guide in the future.

Dynamic Analyses of Semi-Rigid Connection Low Yield Point Steel Frames

2013 ◽  
Vol 351-352 ◽  
pp. 524-527
Author(s):  
Cui Ling Ma ◽  
Song Dan Sun ◽  
Xian Lei Cao
Keyword(s):  
Steel Frames ◽  
Time History ◽  
Steel Frame ◽  
Frame Structure ◽  
History Analysis ◽  
Dynamic Analyses ◽  
Rigid Connection ◽  
Rotation Stiffness ◽  
Analytic Models ◽  
Steel Frame Structure

Based on the analysis for 10 series (altogether 50) of finite element analytic models, the time-history analysis is discussed in this paper to investigate the relations between frame parameters of semi-rigid steel frames, these parameters include the frame's floor number, the frame's span number, especially the rotation stiffness of beam-to-column connections. Comparing with the steel frame structure, the ductility of semi-rigid steel frame structure is improved with the reduction in the rotation stiffness of connections. Furthermore, semi-rigid steel frame structure under seismic loads has a good seismic performance.

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