scholarly journals SUSPENSION LARGE SPAN ROOFS STRUCTURES IN RUSSIA

2021 ◽  
Vol 17 (2) ◽  
pp. 34-42
Author(s):  
Pavel Eremeev ◽  
Ivan Vedyakov ◽  
Andrey Zvezdov
Keyword(s):  
Thin Sheet ◽  
Social Consequences ◽  
Sports Facilities ◽  
Large Span ◽  
Advantages And Disadvantages ◽  
Construction Methods ◽  
Thin Sheet Metal ◽  
Bicycle Wheel ◽  
Suspended Roof ◽  
Design And Construction

Сonsidered are large-span structures with suspended roof structures with a span of up to 200 m, erected in Russia over the past 40 years. Among them, there are differen types of structures for covering sports facilities: cablestayed systems, structures of the "bicycle wheel" type, combined systems, thin-sheet metal hanging shells, etc. The main technical characteristics of structures, principles of operation of structures, their advantages and disadvantages are given. The development of technologies in recent decades has determined the emergence of new forms, materials, design and construction methods. Unique large-span structures have an increased level of responsibility; their collapse can lead to severe economic and social consequences. In this regard, it is relevant to analyze the experience in the design and construction of large-span suspended structures.

Two-Way Pre-Stressing Technology Applied to Large-Scale Aqueduct of Tanglai Channel through Beita Lake

2011 ◽  
Vol 243-249 ◽  
pp. 4511-4515
Author(s):  
Zhuo Li ◽  
Si Hong Liu ◽  
Xu Dong Yang ◽  
Shan Mai ◽  
You Ting Feng
Keyword(s):  
Large Scale ◽  
Design Code ◽  
Construction Period ◽  
Large Span ◽  
Construction Methods ◽  
Stress And Deformation ◽  
Complicated Conditions ◽  
Design And Construction

In view of particularity of the Tanglai channels aqueduct，which crosses Beita Lake, the conventional construction methods and technologies fail to work, so the new two-way pre-stressing technology is employed. After the sidewalls in large span structures of aqueduct were pre-fabricated and hoisted，the secondary floor was poured in design and construction plan. The results show that the comprehensive function of aqueduct is implemented in complicated conditions，such as short construction period，larger span of structures，navigation under aqueduct，pre-fabrication and hoisting of larger sidewalls. The stress and deformation of aqueduct meet the requirements of design code.

Thin sheet metal suspended roof structures

2017 ◽  
Vol 119 ◽  
pp. 629-634 ◽  
Author(s):  
Sergey N. Krivoshapko
Keyword(s):  
Sheet Metal ◽  
Thin Sheet ◽  
Thin Sheet Metal ◽  
Suspended Roof

Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts

2001 ◽  
Vol 4 (3-4) ◽  
pp. 319-333
Author(s):  
Vincent Lemiale ◽  
Philippe Picart ◽  
Sébastien Meunier
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Sheet Metal

Study on Diffusive Wear and Hardness of Driller of Machining Deep Hole in Sheet

2013 ◽  
Vol 457-458 ◽  
pp. 514-517 ◽  
Author(s):  
Xiao Cun Xu ◽  
Qiu Li Ning ◽  
Hui Qiu ◽  
Wen Bin Zheng ◽  
Bing Lin ◽  
...  
Keyword(s):  
Spectrum Analysis ◽  
Thin Sheet ◽  
Energy Dispersive Spectrum ◽  
Processing Technology ◽  
Energy Dispersive ◽  
Machining Parameters ◽  
Deep Hole ◽  
Friction Heat ◽  
Study Results ◽  
Thin Sheet Metal

The processing technology of machining deep hole in thin sheet is a kind of process using friction between driller and workpiece and plasticity of workpiece to form hole. The process is a kind of green mechanical processing technology. Studying green processing process in mechanical is becoming a development direction. In this paper, the new technological process to form deep hole on relative thin panel by friction heat not only saves material, but also saves man-hours, and the workpiece has a good piece of assembly. Because the processing technic is belong to local thermal processing, the diffusive wear and hardness of cemented carbide driller are studied by energy dispersive spectrum analysis energy dispersive spectrum analysis in this paper. The study results are useful to improve the life of driller and look for more appropriate machining parameters, and laid a foundation for further research on forming deep holes process on thin sheet metal by friction heat.

Characterisation of the plane anisotropy and its effect on interstitial free steel thin sheet metal forming simulation

2021 ◽  
pp. 146442072110534
Author(s):  
Latifa Arfaoui ◽  
Amel Samet ◽  
Amna Znaidi
Keyword(s):  
Thin Sheet ◽  
Rolling Direction ◽  
Tensile Tests ◽  
Interstitial Free ◽  
Experimental Database ◽  
Forming Simulation ◽  
Hardening Law ◽  
Tension Tests ◽  
Interstitial Free Steel ◽  
Thin Sheet Metal

The main purpose of this paper is to study the orthotropic plastic behaviour of the cold-rolled interstitial free steel HC260Y when it is submitted to various loading directions under monotonic tests. The experimental database included tensile tests carried out on specimens (in the as-received condition and after undergoing an annealing heat treatment) cut in different orientations according to the rolling direction. A model was proposed, depending on a plasticity criterion, a hardening law and an evolution law, which takes into account the anisotropy of the material. To validate the proposed identification strategy, a comparison with the experimental results of the planar tension tests, carried out on specimens cut parallel to the rolling direction, was considered. The obtained results allowed the prediction of the behaviour of this material when it is subjected to other solicitations whether simple or compound.

Characterization of Horizontal Loads in the Production of Asymmetrical Parts

2011 ◽  
Vol 473 ◽  
pp. 223-228 ◽  
Author(s):  
Bernd Arno Behrens ◽  
Anas Bouguecha ◽  
Richard Krimm ◽  
Thorsten Matthias ◽  
Valerian Salfeld
Keyword(s):  
Thin Sheet ◽  
Research Centre ◽  
Computational Accuracy ◽  
Research Activity ◽  
German Research Foundation ◽  
The Press ◽  
German Research ◽  
Thin Sheet Metal ◽  
Complex Parts

The vision of Transregional Collaborative Research Centre 73 of the German Research Foundation (DFG) is the development of a new manufacturing technology, sheet-bulk metal forming. The research activity is focused on the manufacturing of geometrically complex parts with functional elements from thin sheet metal. This paper gives an overview about the challenges in forming of asymmetrical parts with regard to the forming forces and resulting displacements of the press components. Furthermore, it introduces an appropriate approach for consideration of machine characteristics in order to improve the computational accuracy of the process modelling.

Damage evolution in creep bulging of thin sheet metal

2000 ◽  
Vol 42 (2) ◽  
pp. 163-184
Author(s):  
J. Tirosh ◽  
L. Rubinski ◽  
A. Shirizly ◽  
D.P. Harvey II
Keyword(s):  
Sheet Metal ◽  
Damage Evolution ◽  
Thin Sheet ◽  
Thin Sheet Metal
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