Study of the damage of reinforced concrete shear walls during the 2010 Chile earthquake

Jünemann, Rosita; Llera, Juan Carlos de la; Hube, M.; Vasquez, Julio Estuardo; Chacón, Matías F.

doi:10.1002/eqe.2750

Cited by 37 publications

(13 citation statements)

References 18 publications

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“…When gross sections are used for the structural elements (model SR3) the fundamental periods decrease by 33% compared to model SR1. Finally, if rigid diaphragm is also considered (model R3) the fundamental period decreases by 35% compared to model SR1, where periods obtained for the R3 models are equivalent to those obtained by previous studies (Westenenk et al, 2013;Jünemann et al, 2016). The in-plane stiffness of the diaphragm has a minimal effect in the fundamental period of the studied buildings since the periods of models R3 are about 3% smaller than those of models SR3.…”

Section: Effects Of Modeling Assumptionssupporting

confidence: 67%

“…This latter building has few deep beams of 20 by 75 cm and slabs of 15 cm thick. More information about these buildings is available elsewhere (Westenenk et al, 2012;Westenenk et al, 2013;Jünemann et al, 2016).…”

Section: Building Descriptionmentioning

confidence: 99%

“…Studies about the behavior of RC structural walls during the 2010 Chile earthquake (Wallace et al, 2012;Westenenk et al, 2012;Westenenk et al, 2013;Jünemann et al,2016) concluded that buildings remained essentially elastic until an abrupt brittle failure occurred in some cases. Additionally, other research (Wallace et al, 2012;Jünemann et al, 2015;Alarcón et al, 2014) has identified the high levels of axial load as one of the principal causes of the observed wall damage on these buildings.…”

Section: Introductionmentioning

confidence: 99%

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Contribution of coupling elements to the seismic demand of walls in reinforced concrete buildings

Ramos

Hube

2020

Lat. Am. j. solids struct.

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Architectural configurations of reinforced concrete (RC) wall buildings force the connection of structural walls with beams, slabs and adjacent walls to distribute habitational spaces, generating interaction between those structural elements that results in a coupled structural system. Studies on resisting planes of RC buildings damaged during 2010 Chile earthquake suggest that the behavior of structural walls was highly influenced by the interaction of the resisting plane with the rest of the structure. Furthermore, researchers have identified 7the high levels of axial load as one of the principal causes of the observed wall damage on these buildings, and that a significant amount of this load comes from the seismic demands. However, there is uncertainty about how different coupling elements contribute to the seismic demands in RC walls. In this work, the seismic demands of axial load, shear and moment of RC walls are estimated from three buildings damaged during the 2010 earthquake using detailed finite element models that consider their three-dimensional layout. the contribution of coupling elements to the seismic demands of the studied RC walls is determined. Additionally, the effects of the assumed stiffness of structural elements over the seismic demands is evaluated. The results show that slabs have the largest contribution to the seismic axial load in walls, contributing with more that 90%, followed by adjacent walls and connecting beams. Furthermore, the obtained moment and shear diagrams of the studied walls are significantly different than those of cantilever walls, and it was found that the assumed stiffness of structural elements exerts an important effect on the prediction of the seismic demands in RC walls.

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Section: Effects Of Modeling Assumptionssupporting

confidence: 67%

Section: Building Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contribution of coupling elements to the seismic demand of walls in reinforced concrete buildings

Ramos

Hube

2020

Lat. Am. j. solids struct.

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“…As stated above, the selected building for this study was previously studied by Kozmidis et al (2014) with only moderate success. The building was also studied using 2D inelastic models of independent damaged walls by Ju¨nemann et al (2016).…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional nonlinear response history analyses for earthquake damage assessment: A reinforced concrete wall building case study

et al. 2020

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Nonlinear dynamic analysis techniques have made significant progress in the last 20 years, providing powerful tools for assessing structural damage and potential building collapse mechanisms. The fact that several reinforced concrete shear wall residential buildings underwent severe structural damage in walls at the lower building levels during the 2010 Maule earthquake (Chile) presents a scientific opportunity to assess the predictive quality of these techniques. The objective of this research is to compare building responses using two completely different three-dimensional nonlinear dynamic models and study in detail the observed damage pattern and wall collapse of one reinforced concrete shear wall building in Santiago, Chile. The first model is a mixed fiber-shell model developed in MATLAB, and the second is a shell finite element model developed in the software DIANA. Results of both models are consistent with the hypothesis that high axial loads trigger a limited ductility failure in critical walls at roof-to-base drift ratios less than 0.34% with little capacity of hysteretic energy dissipation, which contradicts the ductile design philosophy of current code provisions.

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“…Post earthquake behavior has illustrated that significant damage has still occurred in RCSW due to a lack of confinement pp. 62 Periodicity: Bi-Annually of the concrete core and bulking of the longitudinal steel in edge elements [7]. This may result in deterioration in strength and stiffness, splitting and ultimately wall failure.…”

Section: Introductionmentioning

confidence: 99%

Design of Composite Shear Wall Encased with Vertical Steel Profiles

Phadnis

Karjinni²

2019

J. Today’s Ideas - Tomorrow’s Technol.

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The concept of steel-concrete composite shear wall is introduced due to the benefits achieved by integrating both the materials. These are structural walls, where steel profiles are encased at the boundary elements. Due to their higher lateral strength and stiffness, they offer a good alternative to improve earthquake resistance over conventional reinforced concrete shear walls in medium and high-rise buildings. Current literature shows that, design procedure of such composite shear walls is not addressed in developing country codes. Hence, a design of steel-concrete composite shear wall is proposed in the present paper on the basis of existing theory and with the help of standard codes. The web portion of shear wall has to be designed as per provisions of Eurocode 8. For the design of composite boundary elements, design norms of composite columns are followed. Also the design of shear stud connectors is adopted according to Eurocode 4.

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Study of the damage of reinforced concrete shear walls during the 2010 Chile earthquake

Cited by 37 publications

References 18 publications

Contribution of coupling elements to the seismic demand of walls in reinforced concrete buildings

Contribution of coupling elements to the seismic demand of walls in reinforced concrete buildings

Three-dimensional nonlinear response history analyses for earthquake damage assessment: A reinforced concrete wall building case study

Design of Composite Shear Wall Encased with Vertical Steel Profiles

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