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Literatura académica sobre el tema "Steel rack connections"

Autor: Grafiati

Publicado: 10 de marzo de 2023

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Artículos de revistas sobre el tema "Steel rack connections"

1

Shah, S. N. R., N. H. Ramli Sulong, R. Khan, M. Z. Jumaat y M. Shariati. "Behavior of Industrial Steel Rack Connections". Mechanical Systems and Signal Processing 70-71 (marzo de 2016): 725–40. http://dx.doi.org/10.1016/j.ymssp.2015.08.026.

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2

Lee, Yeong Huei, Cher Siang Tan, Shahrin Mohammad, Mahmood Md Tahir y Poi Ngian Shek. "Review on Cold-Formed Steel Connections". Scientific World Journal 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/951216.

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The concept of cold-formed light steel framing construction has been widespread after understanding its structural characteristics with massive research works over the years. Connection serves as one of the important elements for light steel framing in order to achieve its structural stability. Compared to hot-rolled steel sections, cold-formed steel connections perform dissimilarity due to the thin-walled behaviour. This paper aims to review current researches on cold-formed steel connections, particularly for screw connections, storage rack connections, welded connections, and bolted connections. The performance of these connections in the design of cold-formed steel structures is discussed.

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3

Rafiqul Haque, A. B. M. y M. Shahria Alam. "Direct Displacement-Based Design of Industrial Rack Clad Buildings". Earthquake Spectra 29, n.º 4 (noviembre de 2013): 1311–34. http://dx.doi.org/10.1193/080611eqs195m.

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A rack clad building (RCB) is a type of warehouse building system built using steel storage racks as the seismic force resisting system. Generally, these rack systems are larger and taller compared to the conventional steel storage racks commonly used in warehouses. These buildings have peripheral racks that can support the claddings. These rack systems possess some unique properties, such as the members built using thin-walled perforated steel sections and the beam-to-column connection utilizing a teardrop connector in the down-aisle direction. Due to the pinched-type hysteretic behavior of these connections, the structure shows unique behavior under lateral loading. To date, very little research has been carried out to determine the seismic performance of an RCB. Current building codes have no provisions for designing a RCB against seismic loading. This study presents a direct displacement-based design (DDBD) procedure for designing these structures in the down-aisle direction.

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4

Cheng, Bo y Zhenyu Wu. "Investigation of Shear Stiffness of Spine Bracing Systems in Selective Pallet Racks". Open Construction and Building Technology Journal 9, n.º 1 (29 de mayo de 2015): 1–6. http://dx.doi.org/10.2174/1874836801509010001.

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This paper presents a general analysis on the shear stiffness of spine bracing systems of selective storage racks in the down-aisle direction. Unlike the architectural steel structure, the bearing capacity of bracing connection in the spine bracing systems of steel rack structure is weaker than that of bracing members. Firstly, destructive tests of spine bracing connection in single entry racks have been conducted. In the tests, a portion of column web around bolt holes is damaged due to the pull force of connecting bolts. Based on the experimental results, the finite element shell model of tested bracing connection is developed, and the emulation method is also used to analyze the deformation behavior of spine bracing connections in double entry racks. The calculating results indicate that, with better mechanical behavior and less local deformation, the tensile stiffness of bracing connection in double entry racks is much larger than that of bracing connection in single entry racks. From the trial calculation, the simplified models using elastic plastic beam elements are proposed. These simplified models can be adopted in the overall deformation analysis of selective pallet racks subjected to horizontal loading. Through the comparative analysis of single entry racks and double entry racks which have four bays and eight floors, the lateral deformation of double entry racks is considerably less than that of single entry racks, showing the large different effect of spine bracing systems on two rack lateral behavior.

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5

Gusella, Federico, Maurizio Orlando, Andrea Vignoli y Klaus Thiele. "Flexural Capacity of Steel Rack Connections Via The Component Method". Open Construction and Building Technology Journal 12, n.º 1 (23 de mayo de 2018): 90–100. http://dx.doi.org/10.2174/1874836801812010090.

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Background: In pallet rack structures, cold-formed steel (CFS) beams and columns are connected through dry joints, so beams can be easily disconnected according to changes of the rack geometric layout. Due to the great variety of connector types and member geometries, recent design codes recommend experimental tests on rack connections to assess their mechanical features. Nevertheless, tests only allow for the overall response of a joint to be evaluated, without providing information about the contribution of each component of the joint to its stiffness and strength. Objective: In this paper, a mechanical model is developed in order to provide useful information about the structural behaviour of rack beam-column connections. Methods: The proposed mechanical model is based on the application of the Component Method (CM) and it allows for the flexural resistance of steel rack connections to be analytically assessed. Analytical results are compared with experimental data from tests performed at the Structures and Materials Testing Laboratory of the Department of Civil and Environmental Engineering of Florence. Results: Results show a good agreement with experimental data, highlighting the accuracy of the proposed approach. The mechanical model allows for the weakest component of the joint and its failure mode to be evaluated, and it highlights the importance of an adequate welding between the beam-end section and the connector. Conclusion: The mechanical model provides fundamental information about the influence of structural details on the overall behavior of rack joints, it appears as a complementary method to expensive experimental tests and it can be used to improve the design of rack connections with the goal to increase their structural response.

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6

Zhao, Xianzhong, Tuo Wang, Yiyi Chen y K. S. Sivakumaran. "Flexural behavior of steel storage rack beam-to-upright connections". Journal of Constructional Steel Research 99 (agosto de 2014): 161–75. http://dx.doi.org/10.1016/j.jcsr.2014.04.007.

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7

Bernuzzi, Claudio, Claudia Pellegrino y Marco Simoncelli. "Characterization of Existing Steel Racks via Dynamic Identification". Buildings 11, n.º 12 (1 de diciembre de 2021): 603. http://dx.doi.org/10.3390/buildings11120603.

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Steel storage racks are widely used in logistics for storing materials and goods. Rack design is carried out by adopting the so-called design-assisted-by-testing procedure. In particular, experimental analyses must be carried out by rack producers on the key structural components in order to adopt the design approach proposed for the more traditional carpentry frames. For existing racks, i.e., those in-service for decades, it is required to evaluate the load carrying capacity in accordance with the design provisions currently in use. The main problem in several cases should be the appraisal of the key component performance, owing to the impossibility to obtain specimens from in-service racks without reduction or interruption of the logistic flows. To overcome this problem, a quite innovative procedure for the identification of the structural unknowns of existing racks has been proposed in the paper. The method is based on in-situ modal identification tests combined with extensive numerical analyses. To develop the procedure, cheap measurement systems are required, and they could be immediately applied to existing racks. A real case study is discussed, showing the efficiency of the procedure in the evaluation of the effective elastic stiffness of beam-to-column joints and base plate connections, that are parameters which remarkably affect the rack performance. The structural unknowns have been determined based on four sets of modal tests (two configurations on the longitudinal direction and two in the transversal direction) plus 9079 iterative structural analyses. The results obtained were then directly compared with experimental component tests, showing differences lower than 9%.

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8

Dai, Liusi, Xianzhong Zhao y Kim J. R. Rasmussen. "Flexural behaviour of steel storage rack beam-to-upright bolted connections". Thin-Walled Structures 124 (marzo de 2018): 202–17. http://dx.doi.org/10.1016/j.tws.2017.12.010.

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9

Zhao, Xianzhong, Liusi Dai y Kim J. R. Rasmussen. "Hysteretic behaviour of steel storage rack beam-to-upright boltless connections". Journal of Constructional Steel Research 144 (mayo de 2018): 81–105. http://dx.doi.org/10.1016/j.jcsr.2018.01.006.

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10

Dai, Liusi, Xianzhong Zhao y Kim J. R. Rasmussen. "Cyclic performance of steel storage rack beam-to-upright bolted connections". Journal of Constructional Steel Research 148 (septiembre de 2018): 28–48. http://dx.doi.org/10.1016/j.jcsr.2018.04.012.

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Tesis sobre el tema "Steel rack connections"

1

Gusella, Federico [Verfasser], Klaus [Akademischer Betreuer] Thiele y Maurizio [Akademischer Betreuer] Orlando. "On the mechanical behavior of steel rack connections and its influence on the seismic response of industrial storage systems / Federico Gusella ; Klaus Thiele, Maurizio Orlando". Braunschweig : Technische Universität Braunschweig, 2021. http://d-nb.info/1225038286/34.

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Gusella, Federico Verfasser], Klaus [Akademischer Betreuer] [Thiele y Maurizio [Akademischer Betreuer] Orlando. "On the mechanical behavior of steel rack connections and its influence on the seismic response of industrial storage systems / Federico Gusella ; Klaus Thiele, Maurizio Orlando". Braunschweig : Technische Universität Braunschweig, 2021. http://d-nb.info/1225038286/34.

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3

Dai, Liusi. "The Hysteretic Behaviour of Beam-to-upright Connections and Their Role in Predicting the Structural Response of Steel Storage Racks under Seismic Action". Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/19645.

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The objective of the research is to investigate the hysteretic behaviour of beam-to-upright connections commonly used in cold-formed steel storage racks, and their role in predicting the structural response of steel storage racks under seismic action. The mechanical beam-to-upright connections are commonly utilised for their convenience in assembly and adjustment. Steel storage racks are slender structures which are sensitive to the second-order effect. The static and dynamic performance of rack structures are thus significantly influenced by the behaviour of connections. Due to the complex nature, current design of beam-to-upright connections largely depends on experiments which are comparatively expensive and time-consuming. To overcome the disadvantages of conducting experiments, this study apply the Component Method to predict the flexural behaviour of beam-to-upright connections in terms of the rotational stiffness and the load-displacement behaviour of main deformable components. Another knowledge gap in research of rack structures is the cyclic behaviour of connections. Cyclic tests on two widely used connection types are carried out considering different geometric details. The deformation characteristic and moment-rotation relationships of test specimens are recorded in the experiments. Moreover, based on experimental and analytical results, Pinching4 model is employed to characterise the hysteretic behaviour of the connections, and the corresponding model parameters are proposed. Furthermore, finite element models of connections incorporating fracture simulations are established and verified against the experimental results. Parametric studies are conducted to determine the effects of various parameters. Taking advantage of the finite element analysis software, the proposed hysteretic model of connections is applied in the dynamic analysis of rack structures to improve the accuracy of transient dynamic analysis of racks under seismic loading.

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4

Gusella, Federico. "On the mechanical behavior of steel rack connections and its influence on the seismic response of industrial storage systems". Doctoral thesis, 2019. http://hdl.handle.net/2158/1166359.

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Steel storage pallet racks are commonly used worldwide to store goods on pallets and represent complex and challenging structures to design. The main racking system is denoted as “selective steel storage pallet rack”. These racking systems are one pallet deep and are separated by aisles, allowing for each pallet, stored on horizontal beams, to be always accessible. Selective racks behave like bracing system in cross-aisle direction, with uprights connected by diagonal bracings, while in down-aisle direction, bracings are usually not installed to make palletised goods always accessible. Therefore, in down-aisle direction racks behave like moment resisting frames (MRFs) whose stability and seismic resistance depend on the performance of beam-to-column connections. This Thesis is motivated by the need to increase the knowledge about the mechanical behavior of rack joints, investigating how it is affected by structural details and design parameters, and its effect on the global seismic response of rack systems. This is not only a very interesting and challenging problem from a scientific point of view, but it can also have a very large economic impact. The proposed goal is achieved through: experimental tests, carried out on full-scale boltless rack joints to identify their non-linear moment-rotation curve under monotonic and cyclic loading; the development of a theoretical model to simulate experimental curves of joints; probabilistic analyses to highlight the influence of uncertainties in material strength and geometrical features on the mechanical performance of joints; and finally the development of a numerical model, capable to describe the pinching in hysteresis loops of connections and its effect on the seismic response of industrial storage systems. To obtain the moment-rotation curve of rack connections and to evaluate how it is affected by structural details, a set of full-scale joints are tested at the Structures and Material Testing Laboratory of the Department of Civil and Environmental Engineering of the University of Florence. In the first part of the Thesis, results of monotonic and cyclic tests are presented. Some joints are also equipped with additional bolts, which could represent an effective solution to improve the seismic response of steel storage pallet racks. Experimental testing is useful to get information about the semi-rigid behavior and ductility of beam-column joints. Nevertheless, despite the success and popularity of experimental testing, tests can be expensive and time-consuming, therefore current state-of-art models for traditional steel joints are based on the Component Method (CM). The CM approach can be applied to any kind of connections because the joint is modeled theoretically as an assembly of components with an elasto-plastic or rigid force-displacement relationship. A mechanical model based on the CM is developed and used to analytically evaluate the non-linear structural response of rack beam-column joints. The accuracy of the proposed approach is checked by the comparison with experimental results. To explore the impact of the component structural details and the uncertainty in steel mechanical properties and geometrical features, a Monte Carlo simulation of rack connection assemblies is also performed. For the development of simulations, statistical properties of material random variables are assumed on experimental results, the variability in geometric tolerances are assumed in accordance with current standard code requirements and the structural response of rack joints is modeled using the proposed mechanical model based on the CM. Finally, experimental tests showed a non-negligible pinching in the cyclic moment-rotation curve of rack connections, with a reduction of energy dissipation. This structural behavior is expected to influence the seismic response of rack systems and it is investigated in the last chapter of the Thesis. A simplified Finite Element (FE) numerical model is proposed for the analysis of steel storage pallet racks under cyclic loads, considering the pinching in the joint hysteresis loop. The effectiveness of the proposed model is its fast tuning and easily implementation in commercial software packages, commonly used for non-linear seismic vulnerability analyses. For a deeper understanding of the pinching effect, a case-study is discussed, comparing two models of joints differing in the modeling of the degradation of the rotational stiffness. Results highlight that a non-liner dynamic analysis with the proposed pinching model, which describes the effective non-linear elasto-plastic behavior of rack joints, is suggested to obtain a seismic vulnerability assessment of industrial storage systems on the safe side.

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Capítulos de libros sobre el tema "Steel rack connections"

1

Dai, L. y X. Zhao. "Experimental investigation on steel storage rack beam-to-upright connections under cyclic loading". En Insights and Innovations in Structural Engineering, Mechanics and Computation, 1068–73. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315641645-176.

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2

El Akchioui, Nabil, Nabil El Fezazi, Youssef El Fezazi, Said Idrissi y Fatima El Haoussi. "Robust Controller Design for Steer-by-Wire Systems in Vehicles". En Proceeding of 2021 International Conference on Wireless Communications, Networking and Applications, 497–508. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2456-9_51.

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AbstractThe steer-by-wire (SbW) technology enables to facilitate better steering control as it is based on an electronic control technique. The importance of this technology lies in replacing the traditional mechanical connections with steering auxiliary motors and electronic control and sensing units as these systems are of paramount importance with new electric vehicles. Then, this research paper discusses some difficulties and challenges that exist in this area and overcomes them by presenting some results. These results meet the SbW’s robust performance requirements and compensate oscillations from the moving part of the steering rack in the closed-loop system model: modeling, analysis and design. Thus, the issue of robust control for nonlinear systems with disturbances is addressed here. Finally, the results are validated through detailed simulations.

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3

Nagy, Zsolt y Annabella Sánduly. "Upright Base Connection Impact on Structural Design of Steel Storage Rack Systems in Seismic Zones". En Lecture Notes in Civil Engineering, 1124–32. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03811-2_125.

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4

"New experimental method for determining the stiffness and strength of steel storage rack floor connections". En Research and Applications in Structural Engineering, Mechanics and Computation, 513–14. CRC Press, 2013. http://dx.doi.org/10.1201/b15963-244.

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Actas de conferencias sobre el tema "Steel rack connections"

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LYU, Zhi Jun, Pei Cai ZHAO, Qian XIANG, Meng WU y Jun GU. "NUMERICAL EVALUATION OF THE SEISMIC RESPONSE OF STEEL STORAGE RACK BEAM-TO-COLUMN CONNECTIONS BASED ON FINITE ELEMENT ANALYSIS". En The 16th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures. Russian Association for Earthquake Engineering and Protection from Natural and Manmade Hazards, 2019. http://dx.doi.org/10.37153/2686-7974-2019-16-952-961.

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Informes sobre el tema "Steel rack connections"

1

DEVELOPMENT AND APPLICATION OF A MECHANICAL MODEL OF BEAM-TO-COLUMN CONNECTIONS OF STEEL STORAGE RACKS. The Hong Kong Institute of Steel Construction, septiembre de 2019. http://dx.doi.org/10.18057/ijasc.2019.15.3.10.

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