scholarly journals Study on the New Method of Constructing Shear Walls in Multi-Storey Buildings With Site Cast Reinforced Concrete Frame System

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Lusine Gurgen Karapetyan ◽  
Tigran Vardan Ter-Poghosyan
Keyword(s):  
Reinforced Concrete ◽  
Residential Building ◽  
Shear Walls ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Thermal Insulating ◽  
First Case ◽  
Seismic Force ◽  
The Republic ◽  
The Impact

The article touches upon the comparative analysis of bearing system calculations of a multi-storey residential building with site cast reinforced concrete frame and shear wall constructed by two different methods.  In the calculation models, the shear walls are constructed from site cast reinforced concrete in the first case, and from three-layer sound and thermal insulating bearing panels in the second. The calculations have been made considering the impact of the seismic force. According to the calculation results, the dynamic parameters of the bearing systems of the buildings and the economic efficiency indicators have been compared. Considering the fact that in the recent years three-layer sound and thermal insulating panels have been widely used in the world, the study attempted to reveal the efficiency of using such panels in the Republic of Armenia.

scholarly journals Influence of effective width of flange on calculation and reinforcement dimensioning of beam of reinforced concrete frame

2021 ◽  
Vol 20 (2) ◽  
pp. 041-056
Author(s):  
Maciej Tomasz Solarczyk
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Reinforced Concrete Frame ◽  
Cross Sectional ◽  
Concrete Frame ◽  
Definition Of ◽  
Effective Flange Width ◽  
The Impact ◽  
T Beam

The article analyses the impact of modeling the cross-section of two-nave and two-storey reinforced concrete frame with dimensions: 18.0 m × 32.0 m as a bars on the results of bending moments, the value of elastic deflection and dimensioning of reinforcement due to bending. Six options were considered: a beam as a rectangular section and five T-beam variants with different definition of effective flange width. The differences in obtained results were commented. Conclusions useful for the designing of reinforced concrete structures were presented. The procedure for determining the effective flange width in the context of PN-EN 1992-1-1:2008 and PN-B 03264:2002 standards with a commentary on the use of effective flange width in calculations and construction of reinforcement in reinforced concrete structures were described. Brief description of determining the reinforcement due to bending according to simplified method given in PN-EN 1992-1-1:2008 was presented. In addition, the standard formula for determining the minimum cross sectional area of reinforcement (9.1N) in PN-EN 1992-1-1:2008 with a proposal for its strict determination for the T-beam with a flange in the tensile zone was analyzed.

scholarly journals Resource-saving technologies for advanced concrete in the Republic of Bashkortostan

2018 ◽  
Vol 230 ◽  
pp. 03009 ◽  
Author(s):  
Alexander Krot ◽  
Viktoriya Ryazanova ◽  
Azat Gabitov ◽  
Aleksandr Salov ◽  
Lyubov Rolnik
Keyword(s):  
Reinforced Concrete ◽  
High Strength ◽  
Strength Properties ◽  
Reinforced Concrete Frame ◽  
Mathematical Methods ◽  
Resource Saving ◽  
Concrete Frame ◽  
Binder Ratio ◽  
Steel Consumption ◽  
The Republic

Properties of both organo-mineral superplasticized unmodified and modified concretes are considered, impact of workability of concrete and water-binder ratio on strength properties of concrete are analyzed herein. Gonsistent aggregate grading with minimum void, accordingly with maximum packed density under optimum content of dispersed particles in concrete is to be applied to make mortars and concrete with stable properties and less variations in values. The proposed solution enables to simplify proportioning as different combination of aggregates is not required for each proportion. Comparative analysis of various fillers being by-products and materials for making mortars and asphalt-concrete has been made. The results for reinforced steel consumption reducing together with efficient combination of higher grade concrete were considered at amending the “reinforced-concrete structures” section. Computational algorithms made under economic and mathematical methods to improve construction solutions over the reinforced concrete frame are given. Efficient engineering solutions to use high strength concrete and rebar that were applied in some facilities are proposed.

Beam-to-Beam Impact Behavior of Reinforced Concrete Frames under Severe Ground Motions

2011 ◽  
Vol 243-249 ◽  
pp. 1210-1218
Author(s):  
Guo Hui Huang ◽  
Zheng He
Keyword(s):  
Reinforced Concrete ◽  
Progressive Collapse ◽  
Ground Motions ◽  
Impact Behavior ◽  
Concrete Frames ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Contact Impact ◽  
Reinforced Concrete Frame Structures ◽  
The Impact

The beam-to-beam impact behavior during the progressive collapse progress of reinforced concrete frame structures under severe ground motions is studied in which three types of impact are included, i.e. 1) contact-impact between one-end failed active beam and intact passive beam; 2) contact-impact between two-end failed active beam and intact passive beam, and 3) contact-impact of one-end failed active beam and one-end failed passive beam. As the first step, the initial impact conditions are established based on the principles of the kinematics and the structural dynamics. Then, the velocities of the beams at the impact instant and the locations of the impact would occur are derived. A so-called impact mass factor is introduced in the paper and determined through the principle of equivalent energy. The history of contact force between the beams involved in the impact is evaluated by the Hertz-damp model. The responses of the passive beam are calculated by solving the equation of motion of a generalized single degree of freedom system.

scholarly journals Impact of genetically nonlinear application of external loads on the stress-strain state and on the principal vibration modes of reinforced concrete frame buildings on elastic subsoil

2019 ◽  
Vol 221 ◽  
pp. 01038 ◽  
Author(s):  
Oleg Pakhmurin ◽  
Victor Mikhaylov ◽  
Matvey Khamgushkeev
Keyword(s):  
Reinforced Concrete ◽  
Strain State ◽  
Vibration Modes ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Frame Buildings ◽  
Linear And Nonlinear ◽  
Reinforced Concrete Frame Structures ◽  
The Impact ◽  
External Loads

In this paper authors discuss the impact of genetically nonlinear application of external loads on the stress-stain state and on principal vibration modes of reinforced concrete frame structures on elastic foundation. The reader will find a methodology for integrated numerical and instrumental analysis. Six examples of linear and nonlinear FEA-models calculated in SCAD Office are given in comparison.

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