A simplified design procedure for seismic retrofit of earthquake-damaged RC frames with viscous dampers

Weng, Da Gen; Zhang, C.; Lu, Xinfang; Zeng, Sizhi; Zhang, S.M.

doi:10.12989/sem.2012.44.5.611

Cited by 25 publications

(8 citation statements)

References 9 publications

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“…This is also demonstrated by the latest achievements in this field, regarding systems incorporating viscous [17][18][19][20][21][22][23][24][25][26][27], metallic yielding [28][29][30] …”

Section: Supplemental Damping-based Retrofit Hypothesismentioning

confidence: 85%

Existing prefab R/C industrial buildings: Seismic assessment and supplemental damping-based retrofit

Sorace

Terenzi

2017

Soil Dynamics and Earthquake Engineering

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“…This is also demonstrated by the latest achievements in this field, regarding systems incorporating viscous [17][18][19][20][21][22][23][24][25][26][27], metallic yielding [28][29][30] …”

Section: Supplemental Damping-based Retrofit Hypothesismentioning

confidence: 85%

Existing prefab R/C industrial buildings: Seismic assessment and supplemental damping-based retrofit

Sorace

Terenzi

2017

Soil Dynamics and Earthquake Engineering

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“…To overcome the shortcomings of the ERM, Landi [25] proposed a method for evaluating the ADR directly according to the damping index. For an SDOF system under harmonic excitation, the damping index ε is defined by the following relationship:…”

Section: Dimmentioning

confidence: 99%

“…is method has the advantage of realising direct evaluation of ADR without iteration but is limited to the evaluation of linear-elastic systems. Weng et al [25] proposed a method for calculating the equivalent ADR of the viscous damper according to the code response spectrum. Landi et al [26] proposed a simplified method for calculating the ADR according to the capability and demand spectra.…”

Section: Introductionmentioning

confidence: 99%

A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency

Wang

et al. 2020

Advances in Civil Engineering

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The additional damping ratio (ADR) is an important indicator for evaluating the damping effect of structures with energy-dissipation devices. Most existing methods for determining the ADR require an analysis of the structural dynamic response and complex iterative calculations. An innovative simplified calculation method for determining the ADR of a structure supplemented by nonlinear viscous dampers is proposed. This method does not require the dynamic response of the structure to be calculated and only requires the structural characteristics, excitation frequency, and damper parameters. In this study, several typical calculation methods for the ADR were analysed. Then, a calculation formula for the ADR was derived with consideration of harmonic excitation under the condition where the excitation frequency is equal to the structural natural frequency, without calculation of the structural dynamic response or an iterative process. The effect of the excitation frequency on the calculated value of the ADR with different damping exponents was studied. Accordingly, the response spectrum average period (RSAP) was considered as the excitation period of ground motion to evaluate the excitation frequency, and a simplified calculation method for the ADR considering the effect of the excitation frequency characterised by the RSAP of the ground motion was established. Finally, the accuracy and effectiveness of the proposed method were verified by comparison with ADRs calculated using other methods.

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“…Viscous dissipative bracing (VDB) technologies are increasingly used worldwide for passive supplemental damping-based rehabilitation of frame structures [4,[33][34][35][36][37][38]. The success of viscous devices is owed to their high damping capacities, undamaged dynamic response up to the available stroke, and simple geometry.…”

Section: Dissipative Bracing Retrofit Hypothesis For the Tall Tankmentioning

confidence: 99%

Seismic assessment and retrofit of two heritage-listed R/C elevated water storage tanks

Mori

Sorace

Terenzi

2015

Soil Dynamics and Earthquake Engineering

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A simplified design procedure for seismic retrofit of earthquake-damaged RC frames with viscous dampers

Cited by 25 publications

References 9 publications

Existing prefab R/C industrial buildings: Seismic assessment and supplemental damping-based retrofit

Existing prefab R/C industrial buildings: Seismic assessment and supplemental damping-based retrofit

A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency

Seismic assessment and retrofit of two heritage-listed R/C elevated water storage tanks

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