fib Bulletin 25. Displacement-based seismic design of reinforced concrete buildings

Calvi, Gian Michele; Abrams, Daniel P.; Bachmann, Hugo; Shao-liang, Bai; Bonelli, Patricio; Carvalho, Eduardo Atem de; Elnashai, Amr S.; Fardis, Michael N.; Garcia, Luis E.; Kappos, Andreas J.; Kowalsky, Mervyn J.; Machida, Atsuhiko; Manfredi, Gaetano; Moehle, Jack P.; Nuti, Camillo; Otani, Shunsuke; Pantazopoulou, Stavroula J.; Park, Robert; Pinto, P. E.; Priestley, Nigel; Waas, G.

doi:10.35789/fib.bull.0025

Cited by 3 publications

(2 citation statements)

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“…where, (8) in which f ' cc the confined compressive strength of concrete; f ' co is the unconfined compressive strength of concrete taken as 0.85 times the cylinder strength; f ' l the effective confining stress calculated considering rebar arrangements; f ' ci the normal stress in the i th fibre of concrete; ci,co and cc the strains corresponding to f ' ci, f ' co and f ' cc respectively; and Ec and Ec,sec the initial tangent and secant moduli of concrete, respectively. The limiting strain of confined concrete is taken as [34]:…”

Section: Constitutive Relationshipsmentioning

confidence: 99%

“…These three parameters are established by curve fitting of available experimental test data of number of RC members tested to failure under different combinations of compressive and shearing stresses. Other refined models available in literature [34,35], which use four parameters (as in William Warnke Model) and five parameters (as in Ottosen Criterion, Reimann Criterion and Hsieh-Ting-Chen Criterion) as variables, provide a closer estimate of experimental test data, reflecting all characteristics, but are complex and requires more computational effort.…”

Section: Constitutive Relationshipsmentioning

confidence: 99%

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Lateral shear strength of rectangular RC columns subjected to combined P-V-M monotonic loading

Zaneeb

Goswami

Murty

2020

BNZSEE

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An analytical method is presented to estimate lateral shear strength (and identify likely mode and location of failure) in reinforced concrete (RC) cantilever columns of rectangular cross-section under combined axial force, shear force and bending moment. Change in shear capacity of concrete with flexural demand at a section is captured explicitly and the shear resistance offered by concrete estimated; this is combined with shear resistance offered by transverse and longitudinal reinforcement bars to estimate the overall shear capacity of RC columns. Shear–moment (V-M) interaction capacity diagram of an RC column, viewed alongside the demand diagram, identifies the lateral shear strength and failure mode. These analytical estimates compare well with test data of 107 RC columns published in literature; the test data corresponds to different axial loads, transverse reinforcement ratios, longitudinal reinforcement ratios, shear span to depth ratios, and loading conditions. Also, the analytical estimates are compared with those obtained using other analytical methods reported in literature; in all cases, the proposed method gives reasonable accuracy when estimating shear capacity of RC columns. In addition, the method provides insights into the shear resistance mechanism in RC columns under the combined action of P-V-M, and it is simple to use.

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Section: Constitutive Relationshipsmentioning

confidence: 99%

Section: Constitutive Relationshipsmentioning

confidence: 99%