Displacement-Based Seismic Assessment of Reinforced Concrete Buildings

Priestley, M. J. N.

doi:10.1080/13632469708962365

Cited by 271 publications

(220 citation statements)

References 5 publications

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“…19). From an analysis of the results, from the uniaxial results the proposals of Kowalsky [25], Priestley [16] and Priestley et al [17] present a better correlation to the experimental results (R > 0.7), as represented in Fig. 20.…”

Section: Empirical Proposals For Equivalent Damping In Rc Elements Unmentioning

confidence: 92%

“…The equivalent damping depends on the structural displacement ductility demand and the location of the plastic hinges in the elements [16]. It may be interpreted as the superposition of the elastic and hysteretic damping as shown in Expression 5, wherein the symbol ''+'' stands for superposition rather than a trivial summation.…”

Section: Evaluation Of Equivalent Damping From Experimental Resultsmentioning

confidence: 99%

“…Different proposals for the equivalent damping of RC elements and structures can be found in the literature, including the works of Priestley et al [16,17], Rosenblueth and Hererra [23], Gulkan and Sozen [24], Kowalsky [25], among others. Blandon [7] developed an extensive review and study of the existing proposals for all type of elements.…”

Section: Empirical Proposals For Equivalent Damping In Rc Elements Unmentioning

confidence: 99%

See 2 more Smart Citations

A comparative analysis of energy dissipation and equivalent viscous damping of RC columns subjected to uniaxial and biaxial loading

Rodrigues

Varum

Arêde

et al. 2012

Engineering Structures

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a b s t r a c tThe hysteretic behaviour of RC columns has been object of many experimental studies over the past years. However, the majority of these studies are focused on unidirectional loading. An experimental program was carried out where 24 columns were tested for different loading histories, under uniaxial and biaxial conditions. The experimental results are presented in this paper and are discussed in terms of global column behaviour, and particularly with regards to energy dissipation and damping capacity. The energy dissipation capacity of the columns was evaluated in terms of cumulative dissipated energy, comparing uniaxial and biaxial test results, and individual cycle dissipated energy. Ultimately, an equation relating the normalised dissipated energy with the displacement ductility is proposed. The equivalent viscous damping was analysed by comparing the uniaxial with biaxial test results, demonstrating the high influence of the load path in the biaxial response of RC columns. Proposals for estimating the equivalent viscous damping given by other authors are compared with the experimental results. Finally, simplified expressions are proposed to estimate equivalent viscous damping in RC columns under biaxial loading.

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Section: Empirical Proposals For Equivalent Damping In Rc Elements Unmentioning

confidence: 92%

Section: Evaluation Of Equivalent Damping From Experimental Resultsmentioning

confidence: 99%

Section: Empirical Proposals For Equivalent Damping In Rc Elements Unmentioning

confidence: 99%

See 1 more Smart Citation

A comparative analysis of energy dissipation and equivalent viscous damping of RC columns subjected to uniaxial and biaxial loading

Rodrigues

Varum

Arêde

et al. 2012

Engineering Structures

View full text Add to dashboard Cite

show abstract

“…The starting point of the design 31 scheme is to define the acceptable stress level in the joint, based on principle tensile stresses p t or principle compression stresses, p c , in the case of interior joints. As noted in the literature 33 [20], principal stresses are more reliable than nominal shear stresses in capturing the response of joints, since they consider the actual stress state of the joint given by a combination of the 35 nominal shear force, V jh (or corresponding stress, v jh ) with the column axial load (N ). The…”

Section: Step-by-step Haunch Design Proceduresmentioning

confidence: 99%

“…Strength degradation curves for existing beam-column joints based on principle 3 tensile/compression stresses as a function of the joint shear deformation have been proposed in the literature [3,6,20]. Values of the principal tensile stress of approximately p t = 0.2 f c , f c being 5 the concrete compression strength, have been for example proposed by Pampanin et al [6] to correspond to first cracking of exterior beam-column joints with plain round bars and end hooks.…”

Section: Step-by-step Haunch Design Proceduresmentioning

confidence: 99%

Development and validation of a metallic haunch seismic retrofit solution for existing under-designed RC frame buildings

Pampanin

Christopoulos

Chen

2006

Earthquake Engng Struct. Dyn.

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The ductility reduction factor in the seismic design of buildings

Lam

Wilson

Hutchinson

1998

Earthquake Engng. Struct. Dyn.

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SUMMARYThis paper presents new trends in the relationship between the ductility reduction factor and the ductility demand in the seismic design of buildings. A total of 4860 inelastic time-history analyses were carried out to study this relationship using 60 single-degree-of-freedom models excited by an ensemble of 81 earthquake accelerogram records from around the world. The asymmetrical distribution of the results highlighted the inaccuracies associated with assuming a normal distribution simply described by the mean and standard deviation to represent the data. A probability of exceedence approach has been used based on counting the number of occurrences the ductility demand exceeds a specified level. The ductility reduction factors developed in this study are consistent with other studies in the long-period range but are different in the short-period range. The ductility reduction factor for very short period buildings of limited ductility has been found to be greater than previously predicted.1998 John Wiley & Sons, Ltd.

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Displacement-Based Seismic Assessment of Reinforced Concrete Buildings

Cited by 271 publications

References 5 publications

A comparative analysis of energy dissipation and equivalent viscous damping of RC columns subjected to uniaxial and biaxial loading

A comparative analysis of energy dissipation and equivalent viscous damping of RC columns subjected to uniaxial and biaxial loading

Development and validation of a metallic haunch seismic retrofit solution for existing under-designed RC frame buildings

The ductility reduction factor in the seismic design of buildings

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