Collapse of Eight‐Story RC Building during 1985 Chile Earthquake

Wood, Sharon L.; Stark, Roberto; Greer, Scott

doi:10.1061/(asce)0733-9445(1991)117:2(600)

Cited by 27 publications

(6 citation statements)

References 4 publications

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“…After breaking out the surrounding concrete it was found that the vertical reinforcing steel was often fractured due to the inelastic demand at the single crack location. This type of failure is characteristic of RC members with low vertical reinforcement contents and was also observed in buildings following the 1985 Chilean Earthquake (Wood 1989;Wood et al 1991). As described by Paulay and Priestley (1992), if a section has insufficient reinforcement there is a danger that the probable cracking moment may exceed the section flexural strength resulting in a sudden non-ductile failure.…”

Section: Introductionmentioning

confidence: 83%

Assessment of minimum vertical reinforcement limits for RC walls

Henry

2013

BNZSEE

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During the 2010/2011 Canterbury earthquakes, several reinforced concrete (RC) walls in multi-storey buildings formed a single crack in the plastic hinge region as opposed to distributed cracking. In several cases the crack width that was required to accommodate the inelastic displacement of the building resulted in fracture of the vertical reinforcing steel. This type of failure is characteristic of RC members with low reinforcement contents, where the area of reinforcing steel is insufficient to develop the tension force required to form secondary cracks in the surrounding concrete. The minimum vertical reinforcement in RC walls was increased in NZS 3101:2006 with the equation for the minimum vertical reinforcement in beams also adopted for walls, despite differences in reinforcement arrangement and loading. A series of moment-curvature analyses were conducted for an example RC wall based on the Gallery Apartments building in Christchurch. The analysis results indicated that even when the NZS 3101:2006 minimum vertical reinforcement limit was satisfied for a known concrete strength, the wall was still susceptible to sudden failure unless a significant axial load was applied. Additionally, current equations for minimum reinforcement based on a sectional analysis approach do not adequately address the issues related to crack control and distribution of inelastic deformations in ductile walls.

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Section: Introductionmentioning

confidence: 83%

Assessment of minimum vertical reinforcement limits for RC walls

Henry

2013

BNZSEE

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“…Post-earthquake surveys show that this non-uniform demand distribution leads to increased vulnerability compared with torsionally regular buildings [1]. Torsional effects were also reported to be the major cause of severe damage and collapse of several buildings during the 1985 earthquakes in Mexico and Chile [2][3][4]. As such, understanding the behavior of torsionally irregular buildings is of significant importance and has been a subject of interest for several decades.…”

Section: Introductionmentioning

confidence: 99%

Effects of torsion on the behavior of peripheral steel‐braced frame systems

Erduran

Ryan

2011

Earthq Engng Struct Dyn

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In this study, the torsional response of buildings with peripheral steel-braced frame lateral systems is evaluated. A three-dimensional model of a three story braced frame with various levels of eccentricity is created and the effects of torsion on the seismic response is assessed for four hazard levels. The response history analysis results indicate that, unlike frame structures, the torsional amplifications in the inelastic systems exceed those of corresponding elastic systems and tend to increase with an increase in the level of inelasticity. The ability of two simplified procedures, elastic response spectrum analysis and pushover analysis, to capture the torsional amplifications in steel-braced frames is evaluated.

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“…Damage maps for reinforced concrete buildings in the urban area were also available from where information was geo-coded and later included in the database. The information available for this event (Algermissen 1985;Ridell et al 1987;Wood et al 1991) allowed the digitalization of damage maps and the geo-location of specific issues for certain buildings in the metropolitan area of the most affected city, Valparaiso. In this case, the information about the characteristics of the buildings was used to associate each class to building classes and codes provided by the GEM Taxonomy.…”

Section: Popayan Colombia 1983mentioning

confidence: 99%

Latin American and Caribbean earthquakes in the GEM’s Earthquake Consequences Database (GEMECD)

et al. 2017

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Among the activities developed under the framework of the Global Earthquake Model, the development of a global consequences database was included. This was defined with the objective of serving as public repository of damages and losses, occurred on different types of elements because of a selected list of earthquakes with epicentres at varying locations around the globe, but also to be used as a benchmark for the development of vulnerability models that capture specific characteristics of the building typologies in each country. The online earthquakes consequences' database has information on 71 events where 16 of them occurred in the Latin America and the Caribbean Region. A complete and comprehensive review and data gathering process were developed for these selected earthquakes accounting for different aspects and dimensions that were considered of interest, besides the physical damage, such as casualties, socioeconomic implications, damages and disruptions in critical facilities and infrastructures, together with the occurrence of secondary events triggered by the ground shaking such as landslides and tsunamis.

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Collapse of Eight‐Story RC Building during 1985 Chile Earthquake

Cited by 27 publications

References 4 publications

Assessment of minimum vertical reinforcement limits for RC walls

Assessment of minimum vertical reinforcement limits for RC walls

Effects of torsion on the behavior of peripheral steel‐braced frame systems

Latin American and Caribbean earthquakes in the GEM’s Earthquake Consequences Database (GEMECD)

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