Seismic Response of Nonductile Flat-Plate Buildings

Chow, Hoong-Leong; Selna, Lawrence G.

doi:10.1061/(asce)0733-9445(1995)121:1(115)

Cited by 8 publications

(8 citation statements)

References 3 publications

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“…Past experimental and numerical research has focused on FP systems at global or local levels. On the experimental side, Chow and Selna, Durrani et al, and Robertson and Johnson investigated the seismic response of existing nonductile FP buildings. Mosalam and Naito addressed column‐grid systems designed only for gravity loads.…”

Section: Introduction and Research Significancementioning

confidence: 99%

Energy capacity and seismic performance of RC waffle‐flat plate structures under two components of far‐field ground motions: Shake table tests

Benavent‐Climent

Galé-Lamuela

Donaire-Ávila

2019

Earthq Engng Struct Dyn

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Summary The bidirectional response of a portion of a reinforced concrete (RC) waffle‐flat plate (WFP) structure subjected to far‐field ground motions is studied through shake table tests. The test specimen is a scaled portion of a prototype structure designed under current building codes and located in a region of moderate seismicity of the Mediterranean area. The specimen was subjected to a sequence of tests of increasing acceleration amplitude that respectively represented very frequent, frequent, design, and very rare earthquakes at the site. The test structure performed well (basically in the elastic domain) under very frequent and frequent earthquakes, approached the boundary between the performance levels of life safety and near collapse under the design earthquake, and collapsed under the very rare earthquake. Damage concentrated at column bases and at the transverse beams of the exterior plate‐to‐column connection. Columns dissipated about 10% of the total energy that contributes to damage, and the rest was dissipated by the exterior plate‐column connection. The total energy input on the structure until collapse under the bidirectional seismic action was very close to the value obtained in previous studies on a similar specimen tested under unidirectional ground motions. The capacity curve estimated from the experimental base shear vs top displacement relationship suggests it is best to use a behavior factor of at most q = 2 when designing WFP structures with the reduced‐spectrum force‐based approach.

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Section: Introduction and Research Significancementioning

confidence: 99%

Energy capacity and seismic performance of RC waffle‐flat plate structures under two components of far‐field ground motions: Shake table tests

Benavent‐Climent

Galé-Lamuela

Donaire-Ávila

2019

Earthq Engng Struct Dyn

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“…There has been extensive investigation of solid slab–column structures , both experimental and numerical. The experimental research of Chow and Selna , Durrani et al and Robertson and Johnson focused on the seismic response of existing non‐ductile flat‐plate buildings. Mosalam and Naito evaluated the seismic behavior of gravity‐load‐designed column–grid systems.…”

Section: Introduction and Research Significancementioning

confidence: 99%

Shaking table tests of a reinforced concrete waffle–flat plate structure designed following modern codes: seismic performance and damage evaluation

Benavent‐Climent

Donaire-Ávila

Oliver-Saiz

2015

Earthq Engng Struct Dyn

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Summary Shaking table tests were conducted on a scaled reinforced concrete waffle–flat plate structure. It represented a conventional construction design under current building codes in the Mediterranean area. The test structure was subjected to a sequence of four seismic simulations of increasing magnitude. Each simulation was associated with a seismic hazard level characterized by the mean return period PR. The test structure performed well for the simulations associated with PR = 95, 475 and 975 years but collapsed under the maximum considered earthquake of PR = 2475 years. Damage concentrated at column bases, where the maximum chord rotation reached 93% of the ultimate capacity, and at the transverse beams of the exterior plate‐to‐column connection that failed in torsion. It is shown that most (from 85% to 90%) of the energy input by the earthquake that contributes to damage is dissipated by the plate. The capacity curve of the tested structure estimated from the experimental base shear vs. top displacement relationship allowed us to compute the overstrength (1.4). It is close to the maximum established by European code EN 1998‐1 (1.5). Based on a detailed study of the test results, potential updates to current codes and design recommendations are suggested. Copyright © 2015 John Wiley & Sons, Ltd.

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“…Punching was not observed at a drift ratio of 5.5%, nor at any higher drift ratio. Although it is not represented in ACI 318-05, cyclic deformations on flat slab systems cause fatigue that lowers the punching strength due to the smaller net area available for shear resistance after the slab cracks under reversed cyclic loading [2,5]. Assuming that γ v = 0.4 is a realistic value for the interior waffle-flat-plate-column connections (as discussed before), and since punching shear failure was not observed in the specimen tested in this study, it can be asserted that the reduction of the punching shear capacity due to cyclic loading did not reach the 74% of the nominal value predicted with ACI 318-05 for cyclic displacements up to 5.5% drift.…”

Section: Strength and Failure Modementioning

confidence: 99%

“…Although there has been extensive investigation on flat slab-column connections [2][3][4][5][6][7], the research on waffle-flat-plate structures is almost non-existent [1]. Empirical design methods recommended by 0141 ACI 318-05 [8] assume that waffle and solid slabs behave in the same manner under load.…”

Section: Introductionmentioning

confidence: 99%

Seismic behavior of interior connections in existing waffle-flat-plate structures

Benavent‐Climent

Cahís

Catalan

2008

Engineering Structures

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Seismic Response of Nonductile Flat-Plate Buildings

Cited by 8 publications

References 3 publications

Energy capacity and seismic performance of RC waffle‐flat plate structures under two components of far‐field ground motions: Shake table tests

Energy capacity and seismic performance of RC waffle‐flat plate structures under two components of far‐field ground motions: Shake table tests

Shaking table tests of a reinforced concrete waffle–flat plate structure designed following modern codes: seismic performance and damage evaluation

Seismic behavior of interior connections in existing waffle-flat-plate structures

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