A New Stirrup Design Considering 3-D Effects in Short Deep Beams

Abstract. This paper is devoted to formulation and general principles of approximation of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method (FEM) discrete-continual finite element method (DCFEM). The field of application of DCFEM comprises structures with regular physical and geometrical parameters in some dimension ("basic" dimension). DCFEM presupposes finite element approximation for non-basic dimension while in the basic dimension problem remains continual. DCFEM is based on analytical solutions of resulting multipoint boundary problems for systems of ordinary differential equations with piecewise-constant coefficients.

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“…1) [7,[10][11][12]14,15,[17][18][19][20][21][22][23]25,[27][28][29][30][31][32]. Some elements of notation system is presented at Fig.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

About solution of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method and discrete-continual finite element method. part 1: formulation of the problem and general principles of approximation

Lyakhovich

Negrozov

2017

MATEC Web Conf.

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“…The construction of this hysteretic curve begins with the monotonic force-displacement curve of a short connection and is obtained with the finite element code ANSYS 12 by using the pivot hysteretic rules for loading and unloading (Băetu et al, 2015). The hysteretic parameters required are obtained from static experimental tests and from cyclic analyses of short beams dominated by shear (Kwan et al, 1999;Gedik et al, 2011;Zhao et al, 2004). The ductility is approximately 3 from the experimental static curve.…”

Section: Hysteretic Model Of the Short Connectionsmentioning

confidence: 99%

Seismic damage evaluation of reinforced concrete buildings with slit walls

Băetu

Barbat

Ciongradi

et al. 2015

Engineering Computations

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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. 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. 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. 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.Peer ReviewedPostprint (author’s final draft

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“…Gedik et al [1] proposed a new stirrup design for short deep beams by considering three-d imensional effects such as lateral deformat ions and spalling of concrete. Stirrups are placed laterally in the shear span along the beam height in order to prevent lateral deformat ions by confinement effect.…”

Section: Introductionmentioning

confidence: 99%

Effect of Stirrups Orientation on Flexural Response of RC Deep Beams

Sayyad¹,

Patankar²

2013

AJCEA

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In this paper, the effect of stirrup orientation on flexural response of reinforced concrete (RC) deep beams with two different shear-span-to-depth (a/d) ratios is presented. For RC beams with the same shear and flexural reinforcements, shear failure is most likely to occur in deep beams rather than in regular beams. Thus, solution for deep beams with shear deficiencies is of great importance. For that purpose a lateral, vertical and inclined stirrup design with two different 'a/d' ratios is proposed. A series of tests were carried out in order to demonstrate the effect of proposed design. The test results of proposed lateral stirrup design indicated the increase of load carrying capacity. The present study shows that the 'a/d' ratio has more influence on the shear capacity, as 'a/d' ratio increases, the shear strength increases in case of short deep beam. The relative effectiveness of lateral (horizontal), vertical and inclined web reinforcement on the load capacity is mainly influenced by the 'a/d' ratio. The strength considered for investigation is flexural strength. Beam of size 700mm X 150mm X 150mm for flexure strength. The specimens were water cured for 28 days and tested with 2 point load subsequently.

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A New Stirrup Design Considering 3-D Effects in Short Deep Beams

Cited by 5 publications

References 5 publications

About solution of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method and discrete-continual finite element method. part 1: formulation of the problem and general principles of approximation

About solution of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method and discrete-continual finite element method. part 1: formulation of the problem and general principles of approximation

Seismic damage evaluation of reinforced concrete buildings with slit walls

Effect of Stirrups Orientation on Flexural Response of RC Deep Beams

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