Failure analysis of RC shear walls with staggered openings under seismic loads

Moșoarcă, Marius

doi:10.1016/j.engfailanal.2013.07.037

Cited by 38 publications

(20 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The authors of this article departed from the general rules, due to which they got a much better resultthe strength of the building increased by 30%. Also in these articles [15][16][17][18][19][20][21][22][23][24][25], the authors conducted research on buildings at the construction stage or which were already subjected to an earthquake. This study allows to evaluate in advance, at the design stage of the building, the carrying capacity of the system in excess of the magnitude of the seismic loads of the design magnitude.…”

Section: Resultsmentioning

confidence: 99%

“…They came to the conclusion that the value of seismic loads in regulations [4,5] is unreasonably underestimated. It should be noted that at current methods for assessing the seismic resistance of wall-frame buildings consider elastic-plastic behavior of building elements, taking into account the effect of the peak values of the seismic impact level [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. The value of residual system deformation that takes place under the effect of peak values of seismic impact level is used for evaluation of seismic effect.…”

Section: Theoretical Overviewmentioning

confidence: 99%

See 1 more Smart Citation

Seismic resistance of multi-storey reinforced concrete wall-frame structures at destructive earthquakes

Yerimbetov

Chalabayev

Kunanbayeva

et al. 2019

PEN

View full text Add to dashboard Cite

This article shows results of a numerical study of the behavior of multi-storey reinforced concrete wall-frame structure under loads of special combination, considering seismic impact that corresponds to destructive earthquake. The purpose of the study is to identify conditions that increase energy absorption capacity of wall-frame structure under the effect of destructive earthquakes as well as methods for assessing the energy absorption capacity of wallframe structure at the design stage. Numerical studies were carried on 9-storey frame building, designed for construction in the area with an estimated seismicity of 7 points. Loads of special combination were applied until the complete exhaustion of the bearing capacity of the structure. The calculations were made using the LIRA software package. Performed studies made it possible to identify and assess bearing capacity margin of buildings designed to meet the requirements of valid antiseismic construction regulations if earthquake intensity exceeds the design calculated value. As a result of a numerical study of the work of a 9-storey frame reinforced concrete building of a frame scheme corresponding to the third version of the system, the building withstood the load exceeding the estimated norm by 30%. The value of the coefficient showing the deformation properties during operation of the system at loads exceeding the calculated values before failure, amounted to K = 3.1. The results obtained give the designer the opportunity to create conditions for the appearance of plastic joints in as many cross sections of frame elements as possible. This in turn leads to an increase in the energy intensity of the skeleton, capable of absorbing the excess energy of a destructive earthquake. We have developed the recommendations for determining bearing capacity margin of buildings at design stage if earthquake intensity exceeds calculated value.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Theoretical Overviewmentioning

confidence: 99%

Seismic resistance of multi-storey reinforced concrete wall-frame structures at destructive earthquakes

Yerimbetov

Chalabayev

Kunanbayeva

et al. 2019

PEN

View full text Add to dashboard Cite

show abstract

“…Three shear wall specimens SW1, SW4 and SW8 were tested by Mosoarca (2013) and simulated by numerical concrete damage plasticity (CDP) constitutive model using ABAQUS. In general, the experimental procedure consisted of five types of walls: three had staggered openings (SW23, SW45 and SW67), one with regular openings (SW8) and one without openings (SW1).…”

Section: Experimental Testingmentioning

confidence: 99%

“…In this study, the evolution of the compressive and tensile damage parameters, d c and d t , respectively, which was defined by simplification in a linear damage parameter-strain relationship. The maximum value of these damage variables, d t and d c , is assumed to be 0.9, which represents the total degradation of the concrete material Mosoarca (Mosoarca 2013). For CDP model, perfectly plastic behavior is defined in terms of inelastic strain and yield stress.…”

Section: Definition Of Damage Evolutionmentioning

confidence: 99%

Strengthening of reinforced concrete shear walls with openings using carbon fiber-reinforced polymers

Husain

Eisa

Hegazy

2019

Int J Adv Struct Eng

View full text Add to dashboard Cite

Reinforced concrete shear walls are one of the most widely used lateral load structural resisting elements in high rise buildings. Introducing openings in existing shear walls may be due to remodeling or municipality considerations, such as placement of staircases, windows, doors and elevators. Making openings in existing shear wall decrease the overall structural capacity and integrity of the wall, in addition to stress concentrations around the openings. This necessitates the strengthening of the opening rim with FRP wraps. This paper focuses on developing a 3D high-reliability dynamic nonlinear finite element model on ABAQUS theory manual and users' manual, version 6.10 (2010) to simulate the behavior of shear walls with openings strengthened with FRP wraps to investigate their seismic response under the monotonic loads. The proposed FE model has been validated using previous experimental data in literature. The FE results indicated that the proposed configuration of CFRP laminates substantially increases the lateral load strength and deformation capacity of the shear wall with openings and also improves the ductility and energy dissipation of the shear wall.

show abstract

“…In 2014, Mosoarca compared the failure behavior of concrete shear walls with regular and irregular openings. The results revealed that for a similar configuration of reinforcing bars, walls with irregular openings, compared to walls with regular openings, are more stiff, and under compression exhibit more bearing strength capacity [7]. Bhowmick et al analytically studied the effect of circular openings on the behavior of single-story steel shear wall.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on the Effect of Position and Number of Openings on the Performance of Composite Steel Shear Walls

Badarloo

Jafari

2018

Buildings

View full text Add to dashboard Cite

Use of composite steel shear walls (CSSW) in earthquake-resistant structures has grown in recent years. However, no thorough information exists on their performance, especially in cases where openings are present. In the present study, in order to first validate the analysis method, ABAQUS was used to model the studied composite shear wall with gap at UC-Berkeley, according to the results of which, a good agreement between the experimental and analytical models was observed. Then, the effect of the position and number of the openings on the performance of the walls was addressed. To this end, models with various openings, including openings close to the beam/column, horizontal/vertical openings and distributing opening, were prepared and analyzed. The results indicate that the maximum reduction in stiffness and strength occurred in walls with single openings. The size of opening and the opening’s area significantly affect shear wall performance. Ultimately, artificial neural network and fitness function tools were employed to obtain predictive models for shear wall performance. A neural network has proven an appropriate alternative method for predicting the displacement, stress, and strength of the composite shear wall.

show abstract

Failure analysis of RC shear walls with staggered openings under seismic loads

Cited by 38 publications

References 5 publications

Seismic resistance of multi-storey reinforced concrete wall-frame structures at destructive earthquakes

Seismic resistance of multi-storey reinforced concrete wall-frame structures at destructive earthquakes

Strengthening of reinforced concrete shear walls with openings using carbon fiber-reinforced polymers

A Numerical Study on the Effect of Position and Number of Openings on the Performance of Composite Steel Shear Walls

Contact Info

Product

Resources

About