scholarly journals Free space-planning solutions in the architecture of multi-storey buildings

2018 ◽  
Vol 33 ◽  
pp. 01035
Author(s):  
Alexander Ibragimov ◽  
Alexander Danilov
Keyword(s):  
Steel Structures ◽  
Bearing Steel ◽  
Structure Design ◽  
Frame Structure ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Space Planning ◽  
Alternative Approach ◽  
Steel Frame Structure ◽  
Bearing System

Here some aspects of the development of steel frame structure design from the standpoint of geometry and morphogenesis of bearing steel structures of civil engineering objects. An alternative approach to forming constructive schemes may be application of curved steel elements in the main load-bearing system. As an example, it may be circular and parabolic arches or segments of varying outline and orientation. The considered approach implies creating large internal volumes without loss in the load-bearing capacity of the frame. The basic concept makes possible a wide variety of layout and design solutions. The presence of free internal spaces of large volume in buildings of a "skyscraper" type contributes to resolving a great number of problems, including those of communicative nature.

Stairs Effect on Steel Frame Structure under Seismic Loading

2014 ◽  
Vol 1065-1069 ◽  
pp. 1245-1248
Author(s):  
Zhuo Jun Zeng ◽  
Jun Ping Wang ◽  
Yan Xiang Li
Keyword(s):  
Seismic Loading ◽  
Structure Design ◽  
Steel Frame ◽  
Frame Structure ◽  
Vibration Period ◽  
Finite Element Software ◽  
Story Drift ◽  
Article Analysis ◽  
Steel Frame Structure ◽  
The Impact

This article analysis stairs effect on steel frame structure under seismic loading by using the finite element software MIDAS Gen. Detailed analyzing impact of stairs on the self-vibration period, period ratio, the story drift and other design indexes in designing of the impact under seismic loading. Analysis shows that stairs have great effects on the design index of steel frame structure. Therefore the stair effect must be considered in analysis of structure design and modeling.

scholarly journals Simple Laminated Glass Panels with Embedded Point Connection under Short-Term Load

2021 ◽  
Vol 1203 (2) ◽  
pp. 022079
Author(s):  
Michaela Zdražilová ◽  
Zdeněk Sokol ◽  
Martina Eliášová
Keyword(s):  
Bearing Capacity ◽  
Glass Structure ◽  
Structure Design ◽  
Laminated Glass ◽  
Glass Panel ◽  
Short Term ◽  
Load Bearing Capacity ◽  
Ongoing Research ◽  
Load Bearing ◽  
Glass Panels

Abstract Glass is a very attractive material for contemporary architecture. The trend is to achieve a maximum transparency of structures; therefore it becomes common to use glass as a material for load-bearing structural elements. Glass facades, roofs, beams or columns are widely used in buildings. The problematic part of a glass structure design is the connection between the glass pieces or between the glass elements and substructures from another material (e.g. steel, concrete etc.). The connection must be capable of bearing the stresses performing during the lifetime period and it should be as unobtrusive as possible at the same time. The ongoing research at the Faculty of Civil Engineering of the Czech Technical University in Prague is focused on an embedded laminated point connection for glass structures. Within this research, the real-scale glass panels were tested. The samples consisted of two glass plies bonded with the EVA foil. For the undrilled ply, the float glass was used in all cases. The thermally toughened or the heat strengthened glass was used for the pre-drilled ply. There was one embedded steel countersunk bolt with HDPE liners placed in each corner of the sample. During the experiment, the samples were horizontally placed using the embedded bolts. The load-bearing capacity of the six tested specimens was determined. The load was applied in several loading and unloading cycles until the collapse of the first embedded connection. If the glass panel failed before the connection, the sample was completely unloaded and then the load was gradually increasing until the collapse of the connection. Vertical deflection and the stresses at two different points were measured during the loading cycles. The humidity and the temperature were also monitored. The experiment showed the way of collapse and a short-term load-bearing capacity of a laminated glass panel with four embedded point connections.

scholarly journals Design and Model Test of a Modularized Prefabricated Steel Frame Structure with Inclined Braces

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Xuechun Liu ◽  
Ailin Zhang ◽  
Jing Ma ◽  
Yongqiang Tan ◽  
Yu Bai
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Method ◽  
Steel Structures ◽  
Steel Frame ◽  
Frame Structure ◽  
Element Analysis ◽  
High Rise ◽  
High Degree ◽  
Steel Frame Structure

Modularized prefabricated steel structures have become the preferred design in the industrialization of steel structures due to their advantages of fast construction speed, high degree of industrialization, low labour intensity, and more. Prefabricated steel structures have some engineering applications, but all are low-rise structures with few applications in the field of high-rise buildings. Using finite element analysis with line and solid elements, full-scale experiments were conducted to study the single-span frame, which is the core load-bearing part of a modularized prefabricated high-rise steel frame structure with inclined braces. The mechanical mechanisms, computation methods, and design formulas of truss girders were obtained by comparing the finite element and model experiments and building a theoretical and experimental basis for the compilation of design codes. The mechanical characteristics under design load, the deformation and stress state, the elastic-plastic law of development, and the yield failure mode and mechanism under horizontal ultimate load were also obtained. Based on theoretical analysis, finite element analysis, and experiments, the design method of this frame was summarized and incorporated into the design code.

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.

scholarly journals Dynamic Analysis of Steel Frame Structure (Regular in Plan) using Curved Bracing Systems

2019 ◽  
Vol 8 (10) ◽  
pp. 4159-4165
Keyword(s):  
Seismic Analysis ◽  
Weight Ratio ◽  
Steel Structures ◽  
High Strength ◽  
Frame Structure ◽  
Design Parameters ◽  
Lateral Loads ◽  
And Performance ◽  
Bracing System ◽  
Steel Frame Structure

Steel structures provide better resistance against lateral and various other combinations of loads. Steel structures have various advantages over RCC structures as they have high strength to weight ratio, uniformity, elasticity flexibility and take minimum time for erection (as large prefabricated structures are available). Steel is recyclable too. Bracing systems are well known to increase the stiffness of any type of structure. Using bracing system in steel structures increases the stiffness of the structures to a large extent. In present paper, the evaluation of different kinds of curved bracing system was carried out for steel framed structure while performing dynamic seismic analysis as per IS:1893:2016. The behavior and performance of various shaped of curved bracing was analyzed in software staad.pro and results were collected and represented in the form of tables, graphs and figures. For this purpose, 14 storey regular building was chosen and different geometric and design parameters were taken as per the codal provisions. The height of each floor was considered as 3.6m. Whereas, the plan of the building entails 6 x 6 bays in both the direction and the size of each panel was taken as 5 x 5m. After scrutinizing the results gathered, it can be concluded that ‘AV Arc’ bracing system is the most effective bracing system and it can be used effectively to resist lateral loads such as earthquake loads

scholarly journals Block-box structures load-bearing capacity under special loads

2021 ◽  
Vol 274 ◽  
pp. 03012
Author(s):  
Marat Salakhutdinov ◽  
Kamil Khalilov
Keyword(s):  
Oil And Gas ◽  
Steel Structures ◽  
Bearing Steel ◽  
Load Bearing ◽  
Oil And Gas Fields ◽  
Short Period ◽  
Box Structures ◽  
Numerical Research ◽  
Gas Fields ◽  
Structural Solutions

Block-box structures today are widely used in construction. Their main features are mobility, lightness and the possibility of assembling block-boxes for any technological purpose. Block-boxes are used in the arrangement of oil and gas fields, settlements and cities where it is necessary to carry out construction in a short period of time or where there is no industrial infrastructure. When designing, it is often necessary to take into account special loads (earthquake or explosive), which significantly affect the applied structural solutions. In this paper, the load-bearing steel structures of block-boxes of various configurations and sizes under the influence of special types of loads are considered. Numerical research, analysis and improvement of structural solutions are carried out.

scholarly journals The Intumescent Paint Layers Thickness Influence on the Load-Bearing Capacity of the Steel Joints

2014 ◽  
Vol 969 ◽  
pp. 332-339 ◽  
Author(s):  
Ioan Száva ◽  
Károly Jármai ◽  
Sorin Vlase ◽  
Tibor Bodnár ◽  
Valentin Vasile Ungureanu ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Electric Furnace ◽  
Steel Structures ◽  
High Accuracy ◽  
Image Correlation ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Full Field ◽  
Preliminary Results ◽  
Steel Joints

In order to improve the steel structures protection against fire, the intumescent paint method can be applied along with other methods. The intumescent paints layers numbers have to be optimized though. An uniform layer of intumescent paint, foreseen to protect the whole structure, represents both a higher cost and an uneconomical solution. The authors started examination on this problem, by analyzing one of the most recommended steel joints from the earthquake-proof criteria. The conceived and realized original electric furnace allows both a high-accuracy tuning/adjustment of the temperature and a good-stability of its, by means of the original electronic command. In order to perform high-accuracy and full-field monitoring of the displacements, the authors used a modern optical non-contact system, the Video Image Correlation one. The obtained preliminary results are very promising and will be continued in the next period by this international team.

scholarly journals PECULIARITIES OF EVALUATION OF METHODS OF DETERMINATION OF CHARACTERISTICS OF FIRE RESISTANCE OF BUILDING STRUCTURES

2020 ◽  
Vol 1 (2) ◽  
pp. 29-40
Author(s):  
S Novak ◽  
M Novak ◽  
O Bedratiuk
Keyword(s):  
Fire Resistance ◽  
Fire Protection ◽  
Steel Structures ◽  
Bearing Steel ◽  
Building Structures ◽  
Load Bearing ◽  
Methods Of Determination ◽  
Wide Range ◽  
The Difference

The results of the study aimed at further improvement and development of procedures for evaluating methods of determining the fire resistance characteristics of building structures are presented. The features of estimation of methods of determination of characteristics of fire resistance of building structures are determined. It is established that for the validation of experimental-calculation methods intended to determine the thickness of fire protection of building structures, which ensures their fire resistance in a wide range of parameters of these structures, it is impossible to use samples of structures with certain properties due to their inability to create. A procedure for such validation using a computational experiment method is proposed. In this procedure, accurate (conditional) temperature data for steel column specimens are determined by solving a direct one-dimensional non-stationary thermal conductivity problem. The validity of the proposed validation procedure by its application for the experimental calculation method, designed to determine the thickness of fire protection materials for load-bearing steel structures (columns and beams), has been established. It is established that the overwhelming number of calculated values of the thickness of the fire protection materials, determined by this method, exceeds its true values, which indicates the acceptability of the obtained results in terms of providing fire resistance of load-bearing steel structures. It is established that the difference between the calculated and actual values of the thickness of the fire protection materials can reach a considerable value (twice or more).The direction of further researches which are focused on revealing of influence of thermophysical properties of fire protection materials and stress-deformed state of samples of steel structures during the test on the accuracy of the method. This will identify more appropriate procedures for evaluating the method and processing the experimental data with increased accuracy.

scholarly journals Assessment and Design of Steel frame Structure, consists Performance of Connection Joints with Tekla & Staad Pro

2020 ◽  
Vol 9 (3) ◽  
pp. 619-626
Keyword(s):  
Construction Materials ◽  
Steel Structure ◽  
Steel Structures ◽  
Frame Structure ◽  
Project Work ◽  
Sustainable Construction ◽  
Commercial Building ◽  
Steel Buildings ◽  
Moment Connections ◽  
Steel Frame Structure

Steel offer the range of advantages to the structure Industry. The erudition of steel gives architects, and the freedom was to achieve the most ambitious visions. Steel is also one of the most sustainable construction materials, building owners naturally value the flexibility of steel buildings in addition the value of benefits they provide. Steel is ideal for modernization, reconfiguring, extending or adapting with minimal disruption. The conception of design analysis as well as modelling of steel structures is the most up-to-date edition in the civil engineering field. It is necessary to model a steel structure but if it is also analysed during its modelling then there will not be any chances of failure. Tekla structures are powerful and flexible software for all structural projects. Flurry up our construction work with an enormous of standard connections for all structural projects. In construction field, we create a evident, constructible 3D model of any steel structure from everyday industrial and commercial buildings to stadiums and high rise buildings. This project dealing with manual connection designing by using of Standards (ISO, AISC, AWS etc..). As well as considering of OSHA rules. Implemented manual designing and modelling by using of Tekla software. And the connections are an important part of steel structure like beam to column connections, moment connections. And are designed more conventionally than any individual members. The aim of this project work is to analyse a 7-storeyed commercial building for different load combinations using STAAD Pro software. And behaviour of connection of bolts.

scholarly journals Design and Specification Compilation of a Modularized Prefabricated High-rise Steel Frame Structure with Inclined Braces Part I: Integral Structural Design

2015 ◽  
pp. 206-213
Author(s):  
Ailin Zhang ◽  
Xuechun Liu ◽  
Chen Tian ◽  
Xun Zhang ◽  
Yongqiang Tan
Keyword(s):  
Structural Design ◽  
Response Spectrum ◽  
Time History ◽  
Steel Structures ◽  
Steel Frame ◽  
Frame Structure ◽  
Scale Production ◽  
Elastic Plastic ◽  
High Rise ◽  
Steel Frame Structure

Modularized prefabricated steel structures have certain obvious advantages, i.e., rapid construction, industrial-scale production and pro-environmental aspects, and are the main method in industrialization of steel structures. Although applications of these structures have been reported all over the world, in most cases, the steel structural systems are only suitable for low-rise buildings, and their application in high-rise buildings is quite limited. This paper proposes a new type of modularized prefabricated high-rise steel frame structure with inclined braces. Based on the T30 hotel building, the mechanical properties, failure mode, failure mechanism and elastic-plastic development laws are investigated by using the elastic design of a structure under various load conditions, the analysis of the internal force and displacement responses under frequent earthquakes via the response spectrum method and linear time-history analysis, the static elastic-plastic pushover analysis under rare earthquake conditions. According to finite element simulations and testing, elastic and elastic-plastic structural design methods are proposed in this paper. This work provides an important reference for research and design of the same type of modularized prefabricated high-rise steel structures, and the design method has been compiled into design specification.

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