scholarly journals A Software Model for Parameters Affecting the Dimensions of Reinforced Concrete Prefabricated Facade Elements

2021 ◽  
Vol 8 (3) ◽  
pp. 259-282
Author(s):  
Mustafa Tosun ◽  
Enes Yasa
Keyword(s):  
Reinforced Concrete ◽  
Computer Program ◽  
Sound Insulation ◽  
Model Program ◽  
Static Behavior ◽  
Software Model ◽  
Building Facade ◽  
Industrial Buildings ◽  
Abstract Condition ◽  
And Behavior

In this study, a model software of a computer program related to determining dimensional behavior, which will contribute to the multi-layered units used on the facade of industrial buildings to be standardized, has been prepared. By means of this model software, the factors determining the width (A), the height (h) and the section (d) of the units of a building facade, could be evaluated. These factors, at the same time, from the dimensions of building facade units providing “thermal insulation, sound insulation statically behavior and coordination dimension of facade unit.” In the program (named as MT2 Prefabrike), these four factors could be evaluated by providing the optimization in sequence and within themselves. Thus, by developing a new method of approach in the standardizing of facade units, apart from the visible characteristics of the units, the idea of standardizing the performance and behavior expected from the units, are put forward. In the model program formed with this idea, before producing of the facade units, the optimization is to be provided by analyzing the factors which are effective in giving dimension to the units, in abstract condition (computerized). Keywords: a model software, building facade unit, prefabrication, thermal and sound ınsulation, static behavior analysis, the facades of ındustrial buildings

METHODS OF FORECAST CALCULATION OF GROUND WATER BACKWATER IN THE ZONE OF HYDRAULIC STRUCTURES INFLUENCE

2020 ◽  
pp. 109-116
Author(s):  
N.P. KARPENKO ◽  
◽  
M.A. SHIRYAEVA
Keyword(s):  
Numerical Model ◽  
Computer Program ◽  
Ground Water ◽  
Programming Language ◽  
Hydraulic Structure ◽  
Hydraulic Structures ◽  
Software Model ◽  
Computational Program ◽  
Specific Object ◽  
Zone Of Influence

The purpose of the work is to consider methods for calculating the forecast of groundwater backwater in the zone of influence of hydraulic structures. The analysis of analytical dependences of calculation of the forecast of groundwater backwater for various calculation schemes is carried out. For a homogeneous scheme of the geofiltration structure, a numerical model is proposed and a computational program for calculating the groundwater backwater is developed. It allows calculating the groundwater backwater from the channel at any time in the discrete mode. To simplify the solution of the problem of calculating the groundwater backwater, a computer program was created in the programming language Phyton Version 8.3 which quickly solves this hydrogeological problem. A possible range of geofiltration parameters is proposed for calculating the groundwater backwater near main channels. The adaptation and implementation of the software model was carried out for a specific object – the Bolshoy Stavropol channel-5, for which forecast calculations were made. The results of predictive calculations of groundwater backwater are the basis for the assessment of areas of possible flooding – the territory within which the level of ground water increases as a result of their backup by a hydraulic structure.

Fire Behaviors of Restrained RC Beams with Slab

2010 ◽  
Vol 163-167 ◽  
pp. 1445-1450
Author(s):  
Gui He Tang ◽  
Bo Wu
Keyword(s):  
Reinforced Concrete ◽  
Computer Program ◽  
Axial Force ◽  
Stiffness Ratio ◽  
Rc Beams ◽  
Slab Width ◽  
Standard Fire ◽  
Rotational Restraint ◽  
Simulation Results ◽  
In Fire

Using the computer program SAFIR, the behaviors of restrained reinforced concrete (RC) beams with slab exposed to ISO834 standard fire are analyzed. The influences of three parameters (i.e., width of slab, axial restraint stiffness ratio, and rotational restraint stiffness ratio) on the beams’ behaviors in fire are investigated. Simulation results show that: (a) the axial force in the slab is much larger than that in the beam on the whole; (b) after 0.5 hour of heating the axial force in the slab decreases gradually with an increasing of the slab width ranging from 1.0 m to 2.5 m, but the influence of the slab width ranging from 1.0 m to 2.5 m on the axial force in the beam is limited; and (c) the effect of the rotational restraint stiffness ratio on the axial force in the beam/slab is very limited, but the beam’s peak hogging moment increases gradually with an increasing of the rotational restraint stiffness ratio.

scholarly journals Modeling of joint work of steel beam constructions with reinforced concrete ribbed floor slabs

2021 ◽  
pp. 44-57
Author(s):  
Yevhen Dmytrenko
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Precast Concrete ◽  
Concrete Slabs ◽  
Effective Width ◽  
Joint Work ◽  
Load Bearing ◽  
Reinforced Concrete Slabs ◽  
Industrial Buildings ◽  
Floor Slabs

Traditional methods of calculation of beam constructions of floors and coverings of industrial buildings assume their consideration when calculating separately from the frame structures, in particular, reinforced concrete slabs, without taking into account their joint work, which leads to a significant margin of safety. Today in Ukraine there is a significant number of industrial buildings and structures that need strengthening and reconstruction. In this regard, of particular importance are studies of the actual load-bearing capacity of the frames of single-storey and multi-storey industrial buildings, and both in the reconstruction and in new construction, the results of which will significantly reduce costs and more rationally design structures. At the same time, one of the most relevant areas is the study of the joint work of metal load-bearing structures with prefabricated reinforced concrete structures of rigid disks of coatings and floors in their calculation.           Moreover, in the national building codes, as well as in the educational and methodological literature, the calculation methods of taking into account the joint work of such constructions are not fully covered. The purpose of this work is to estimate the reduction of mass of the metal beam structure in its calculation in bending, taking into account the joint work with the rigid disk of the floor consist of precast concrete. As part of the study, the calculation of the floor beam according to the traditional calculation scheme - without taking into account the joint work with the floor slab, the calculation of its cross-section taking into account the joint work with floor slabs and experimental numerical study of the floor by the finite element method. Modeling of the floor fragment was performed in the software packages "SCAD Office" and "LIRA CAD 2019". Numerical research is aimed at verifying the feasibility of using the calculation methodology of DBN B.2.6-98-2009 to determine the effective width of the shelf when calculating the T-sections for prefabricated reinforced concrete slabs, which are included in the joint work with the floor beams. A comparative analysis of the obtained cross-section of the beam with the beam which was previously calculated by the traditional method of calculation  in stresses in the most dangerous cross section and the total mass of the beams. According to the results of the analysis, the correctness of the application of the above normative method for determining the effective width of the shelf of T-bending reinforced concrete elements was confirmed.

scholarly journals The requalification of industrial buildings: a circular economy perspective

2021 ◽  
pp. 159-169
Author(s):  
Agata Maniero ◽  
Giorgia Fattori
Keyword(s):  
Reinforced Concrete ◽  
Circular Economy ◽  
Real Case ◽  
Building Stock ◽  
Industrial Buildings

Since the 1970s, in Europe the industrial decommissioning phenomenon has led to the generation of an obsolescent and widespread building stock, located in highly strategic areas. This paper, aiming to make abandoned industrial buildings re-enter the market, focused on the development of prefabricated housing modules, according to the nested-building renovation approach. The project started from the constraint’s typological analysis (architectural, functional and structural) of 900 reinforced concrete industrial buildings in view of the intervention replicability. Finally, to validate the design and technological choices, the analysed system was applied to a real case study in Verona: the Greggi Warehouse (1960) in the “ex-Manifattura Tabacchi” factory area.

Strength and Behavior of Circular FRP-Reinforced Concrete Sections without Web Reinforcement in Shear

2017 ◽  
Vol 143 (3) ◽  
pp. 04016196 ◽  
Author(s):  
Ahmed H. Ali ◽  
Hamdy M. Mohamed ◽  
Brahim Benmokrane
Keyword(s):  
Reinforced Concrete ◽  
Web Reinforcement ◽  
And Behavior

The effect of dome properties on design of the axial symmetric cylindrical wall

2021 ◽  
Vol 7 (1) ◽  
pp. 11
Author(s):  
Aylin Ece Kayabekir
Keyword(s):  
Reinforced Concrete ◽  
Computer Program ◽  
Numerical Investigation ◽  
Computer Software ◽  
General Purpose ◽  
Design Stage ◽  
Cylindrical Wall ◽  
Support Condition ◽  
Structural Concrete ◽  
Analysis And Design

The usage of computer software in civil engineering has expanded in last decades. Many general-purpose and special-purpose commercial programs perform a very important function, especially at the design stage. In this study, a computer program is introduced for the analysis and design of the axial symmetric cylindrical wall considering the dome effects. Analysis processes are carried out according to Flexibility theory with long wall assumption and during the reinforced concrete (RC) design of the wall, ACI 318-Building code requirements for structural concrete are considered. In numerical investigation, the effects of the dome properties (thickness and height) on the analysis and design of the wall are investigated by performing a totally 72 case analyzes. These cases include different support condition at bottom of the wall, wall heights, dome thicknesses and heights. According to analysis results, it is concluded that effects of dome thickness and heights on the wall on the wall are very limited.

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