Seismic design of rectangular/square columns in SDOF systems based on their damage performance

Wang, Yukui; Liu, Zhefeng; Zhang, Dan; Hu, Z. Q.; Yu, Dong

doi:10.1177/00368504221127788

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…When the ductility coefficient µ > 5, the construction member is destroyed after the earthquake. Table 3 shows the performance index limit of the damage index-based design method and ductility coefficient-based design method [29].…”

Section: Comparison Between the Design Methods Based On Damage Index ...mentioning

confidence: 99%

Research on Damage Mechanism and Performance-Based Design Process of Reinforced Concrete Column Members

et al. 2023

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In order to understand the seismic damage assessment of reinforced concrete column members, the coupling relationship between the capacity degradation and the accumulated hysteretic energy and the displacement history was considered. The energy-based damage index under the random variable amplitude loading history was proposed. On the basis of preliminary research, the corresponding relationship between the damage index and the construction member parameters and seismic parameters was established, the damage mechanism was analyzed according to the damage index, and then the performance-based design process was proposed. It was found that increase in the stirrup ratio can slow down the damage, and the slowing effect was initially fast and then slows. When the reinforcement ratio is doubled, the damage index decreased by 0.063. The longer the earthquake duration was, the more serious the damage was, and this phenomenon was more obvious when the ductility coefficient was larger. With the increase in the ductility coefficient, the damage continuously increased. Therefore, it is an effective way to decrease the damage by controlling the ductility coefficient. Among all the influencing factors, the fundamental period and seismic intensity contributed more significantly to the damage indicators. When the damage index (performance objective) was determined, the target stirrup ratio can be obtained according to the proposed performance design process, that is, this design process can be used in the performance-based design. The design method based on damage index can make up for the deficiency that the design method based on the ductility coefficient does not consider the earthquake duration.

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Section: Comparison Between the Design Methods Based On Damage Index ...mentioning

confidence: 99%

Research on Damage Mechanism and Performance-Based Design Process of Reinforced Concrete Column Members

et al. 2023

Self Cite

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The Seismic Design Process of RC Column Components in SDOF System considering the Earthquake Duration Effect

Wang,

Zhang,

Liu

et al. 2023

Shock and Vibration

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In order to study seismic design process of RC (reinforced concrete) column components considering the effect of earthquake duration, the degradation law of capacity under random amplitude hysteresis history was conducted by the research group, and the estimation method for the energy dissipation capacity of RC column components was suggested. Furthermore, the correlation between the stiffness decay index and energy dissipation capacity, hysteresis histories, and structural parameters was proposed, and the performance classification criteria based on the stiffness decay index was established. On this basis, the connection between the stiffness decay index and structural parameters and seismic parameters was established, and the seismic design process of RC column components in SDOF (single degree of freedom) system was proposed. The research indicated that the proposed seismic design process based on stiffness decay index can effectively consider the effect of earthquake duration. The stiffness decay index is more suitable for defining structural damage than deformation index and Park-Ang index. The stiffness decay index establishes quantitative relationships with seismic parameters and structural parameters, facilitating performance-based design in engineering practice. The increase in earthquake duration exacerbates the damage of RC column components, and this effect is more pronounced at the beginning of the earthquake and gradually decreases over time.

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Seismic design of rectangular/square columns in SDOF systems based on their damage performance

Cited by 2 publications

References 21 publications

Research on Damage Mechanism and Performance-Based Design Process of Reinforced Concrete Column Members

Research on Damage Mechanism and Performance-Based Design Process of Reinforced Concrete Column Members

The Seismic Design Process of RC Column Components in SDOF System considering the Earthquake Duration Effect

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