Effect of 3D models on seismic vulnerability assessment of deficient RC frame structures

Mushtaq, Arslan; Khan, Shaukat Ali; Aḥmad, Junaid; Ali, Muhammad Usman

doi:10.1080/13287982.2018.1480910

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…Beside this, the seismic fragility curves for each floor of the structure were generated to evaluate seismic vulnerability of the structure. Additionally, Mushtaq et al (2018) take 2D and 3D models of multilayer RC buildings as a case study, and the static cyclic analysis was performed and seismic vulnerability assessment was carried out using the capacity spectrum method. They also concluded that the 3D model is more brittle, cracked earlier, and more susceptible to earthquakes than 2D counterparts.…”

Section: Assessment Of Seismic Performancementioning

confidence: 99%

Experimental Quantification on the Residual Seismic Capacity of Damaged RC Column Members

Chiu

Sung

Chi

et al. 2019

Int J Concr Struct Mater

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To quantify the post-earthquake residual seismic capacity of reinforced concrete (RC) column members, experimental data for 6 column specimens with flexural, flexural-shear and shear failure modes are used to derive residual seismic capacity of damaged RC column members for specified damage states in this work. Besides of the experiment data, some related researches are also investigated to suggest the reduction factors of strength, stiffness and energy dissipation capacity for damaged RC column members, respectively. According to the damage states of RC columns, their corresponding seismic reduction factors are suggested herein. Taking an RC column with the flexural-shear failure for an example, its reductions factors of strength, stiffness and energy dissipation capacity are 0.5, 0.6 and 0.1, respectively. This work also proposes the seismic performance assessment method for the residual seismic performance of earthquake-damaged RC buildings. In the case study, this work selects one actual earthquake-damaged school building to demonstrate the post-earthquake assessment of seismic performance for a damaged RC building.

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Section: Assessment Of Seismic Performancementioning

confidence: 99%

Experimental Quantification on the Residual Seismic Capacity of Damaged RC Column Members

Chiu

Sung

Chi

et al. 2019

Int J Concr Struct Mater

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“…Experience from recent severe earthquakes has confirmed that RC buildings designed without earthquake-resistance requirements (precode structures) or following outdated structural codes are extremely vulnerable to seismic excitation. From literature review, considerable effort has been made to evaluate the seismic vulnerability of structures on both global and local levels [1][2][3][4][5]. This is especially true for public buildings such as hospitals or schools, whose seismic resistance is very important in view of the consequences associated with failure [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

A Displacement-Based Design Method for Seismic Retrofit of RC Buildings Using Dissipative Braces

Ferraioli

Lavino

2018

Mathematical Problems in Engineering

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The paper proposes a displacement-based design method for seismic retrofit of RC buildings using hysteretic dissipative braces. At first, a fully multimodal procedure based on an adaptive version of the capacity spectrum method is applied to the 3D model of the damped braced structure. Then, the properties of an idealized bilinear model are defined using the seismic characteristics of the compound system thus accounting for the frame-damped brace interaction. Finally, an iterative procedure is developed to provide an optimal distribution of dampers. The proposed method overcomes the limitations of the design procedures in the literature that generally neglect the frame-damped braces interactions. Moreover, it addresses the main issues of seismic design of damped braces: effect of force demands applied to the frame due to the damper yielding and strain hardening, higher modes contribution, effect of soft-storey irregularities, and torsion effect in asymmetric buildings. The proposed design procedure is first validated using nonlinear static and dynamic analyses of a numerical example. Then, it is implemented to a real case study of a RC school building to assess its applicability in current practice.

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Assessment and vulnerability reduction of under-designed existing structures: Traditional vs innovative strategy

Cancellara

Cicco

Angelis

2019

Computers & Structures

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Effect of 3D models on seismic vulnerability assessment of deficient RC frame structures

Cited by 6 publications

References 10 publications

Experimental Quantification on the Residual Seismic Capacity of Damaged RC Column Members

Experimental Quantification on the Residual Seismic Capacity of Damaged RC Column Members

A Displacement-Based Design Method for Seismic Retrofit of RC Buildings Using Dissipative Braces

Assessment and vulnerability reduction of under-designed existing structures: Traditional vs innovative strategy

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