The Computational Model of Spatial Formation of Cracks in Reinforced Concrete Constructions in Torsion with Bending

2015 ◽  
Vol 725-726 ◽  
pp. 784-789 ◽  
Author(s):  
Alexey Salnikov ◽  
Vladimir Kolchunov ◽  
Igor Yakovenko
Keyword(s):  
Reinforced Concrete ◽  
Computational Model ◽  
Physical Interpretation ◽  
Spatial Coordinates ◽  
Formation Of Cracks

It is proposed a computational model of spatial formation of cracks in reinforced concrete constructions under the action of torsion with bending, based on working assumptions and constructed equations. The physical interpretation of the solution is that it allows to search for generalized minimum load, which corresponds to the formation of the first crack and the spatial coordinates of the point of its formation.

About the reasons of formation of cracks in monolithic reinforced concrete floor slabs

2020 ◽  
pp. 70-77
Author(s):  
Lidiya Kosheleva ◽  
◽  
Sergey Mijusov ◽  
Sergey Kletenkov ◽  
Daniil Ryazantsev ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Concrete Floor ◽  
Floor Slabs ◽  
Formation Of Cracks

MOMENTS IN REINFORCED CONCRETE STRUCTURES UNDER BENDING WITH TORSION

2021 ◽  
Vol 95 (3) ◽  
pp. 27-46
Author(s):  
VL.I. KOLCHUNOV ◽  
◽  
A.I. DEMYANOV ◽  
M.V. PROTCHENKO ◽  
◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Computational Model ◽  
Cross Sections ◽  
Neutral Axis ◽  
Reinforced Concrete Structures ◽  
The Third ◽  
Straight Line ◽  
The Family ◽  
Third Stage ◽  
Concrete Blocks

The moments in reinforced concrete during bending with torsion were determined, the new first hypothesis of linear deformations and its filling of the diagram during bending with torsion for the analytical second functional as a function of three functions - an exponent, a straight line and a parabola curve. A simple new method is found (from the family of mesh methods) and a summed function of additional deplanation is proposed. The new second hypothesis of angular deformations and its filling of the diagram in reinforced concrete during bending with torsion is constructed. The analytical first general undefined functional is a function of functions, as well as transitions, operations between functions. At the same time, a spatial triple integral of arguments from longitudinal deformations for the first hypothesis was obtained, as well as the third and fourth functionals (indefinite and definite) from moments (bending and twisting) with the projection of the coefficients of the diagram of "deformations - stresses" of compressed concrete and the filling coefficients of the diagrams of compressed concrete for their shoulders to the neutral axis for a field of small squares. The bending and torque moments from the compressed area of concrete and working reinforcement are determined (folded for their levels or expanded into algebraic functions from the synthesis of the computational model of reinforced concrete blocks). In this case, we have new functionals (from the first to the fourth functional), proposed hypotheses (first and second), as well as cross sections (from small squares) to a spatial crack. There are also jumps (cracks) lateral, normal, etc., from the first - third stage of average deformations of concrete and working reinforcement.

Computational Model for Cracked Reinforced Concrete Subjected to Cyclic In-Plane Loading

1988 ◽  
pp. 346-349
Author(s):  
Hyunmock Shin ◽  
Kohichi Maekawa ◽  
Jun Yamazaki ◽  
Hajime Okamura
Keyword(s):  
Reinforced Concrete ◽  
Computational Model

scholarly journals Seismic damage evaluation of reinforced concrete slit walls

2015 ◽  
Vol 32 (2) ◽  
pp. 424-451 ◽  
Author(s):  
Sergiu Andrei Baetu ◽  
A H Barbat ◽  
Ioan Petru Ciongradi
Keyword(s):  
Reinforced Concrete ◽  
Computational Model ◽  
Nonlinear Dynamic ◽  
Seismic Analysis ◽  
Solid Wall ◽  
Nonlinear Dynamic Analysis ◽  
Content Type ◽  
Structural Wall ◽  
Finite Element Software ◽  
Storey Building

Purpose – The purpose of this paper is to investigate a dissipative reinforced concrete structural wall that can improve the behavior of a tall multi-storey building. The main objective is to evaluate the damage of a dissipative wall in comparison with that of a solid wall. Design/methodology/approach – In this paper, a comparative nonlinear dynamic analysis between a dissipative wall and a solid wall is performed by means of SAP2000 software and using a layer model. The solution to increase the seismic performance of a reinforced concrete structural wall is to create a slit zone with short connections. The short connections are introduced as a link element with multi-linear pivot hysteretic plasticity behavior. The behavior of these short connections is modeled using the finite element software ANSYS 12. In this study, the authors propose to evaluate the damage of reinforced concrete slit walls with short connections using seismic analysis. Findings – Using the computational model created in the second section of the paper, a seismic analysis of a dissipative wall from a multi-storey building was done in the third section. From the results obtained, the advantages of the proposed model are observed. Originality/value – A simple computational model was created that consume low processing resources and reduces processing time for a dynamic pushover analysis. Unlike other studies on slit walls with short connections, which are focussed mostly on the nonlinear dynamic behavior of the short connections, in this paper the authors take into consideration the whole structural system, wall and connections.

scholarly journals Seismic damage evaluation of reinforced concrete buildings with slit walls

2015 ◽  
Vol 32 (6) ◽  
pp. 1661-1690 ◽  
Author(s):  
Sergiu Andrei Baetu ◽  
Alex H Barbat ◽  
Ioan Petru Ciongradi ◽  
Georgeta Baetu
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Computational Model ◽  
Nonlinear Dynamic ◽  
Seismic Analysis ◽  
Nonlinear Dynamic Analysis ◽  
Structural Walls ◽  
Content Type ◽  
Solid Walls ◽  
Storey Building

Purpose – The purpose of this paper is to investigate a reinforced concrete multi-storey building with dissipative structural walls. These walls can improve the behaviour of a tall multi-storey building. The authors’ main objective is to evaluate the damage of a building with dissipative walls in comparison with that of a building with solid walls. Design/methodology/approach – In this paper, a comparative nonlinear dynamic analysis between a building with slit walls and then the same building with solid walls is performed by means of SAP2000 software and using a layer model. The solution to increase the seismic performance of a building with structural walls is to create slit zones with short connections in to the walls. The short connections are introduced as a link element with multi-linear pivot hysteretic plasticity behaviour. The hysteretic rules and parameters of these short connections were proposed by the authors and used in this analysis. In this study, the authors propose to evaluate the damage of a building with reinforced concrete slit walls with short connections using seismic analysis. Findings – Using the computational model created by the authors for the slit wall, a seismic analysis of a multi-storey building with slit walls was done. From the results obtained, the advantages of the proposed model are observed. Originality/value – Using a simple computational model, created by the authors, that consume low processing resources and reduces processing time, a nonlinear dynamic analysis on high-rise buildings was done. Unlike other studies on slit walls with short connections, which are focused mostly on the nonlinear dynamic behaviour of the short connections, in this paper the authors take into consideration the whole structural system, wall, connections and frames.

Computational model of textile-reinforced concrete structures

2004 ◽  
Vol 82 (23-26) ◽  
pp. 1971-1979 ◽  
Author(s):  
S. Holler ◽  
C. Butenweg ◽  
S.-Y. Noh ◽  
K. Meskouris
Keyword(s):  
Reinforced Concrete ◽  
Computational Model ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Textile Reinforced Concrete

Computational Model of the Tensile Strength of Fiber-Reinforced Concrete

2015 ◽  
Vol 51 (3) ◽  
pp. 340-347 ◽  
Author(s):  
V. P. Sylovanyuk ◽  
R. Ya. Yukhym ◽  
А. E. Lisnichuk ◽  
N. А. Ivantyshyn
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Computational Model ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced
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