SEISMIC VULNERABILITY ASSESSMENTS FOR OLD BUILDINGS BY DIFFERENT VERSIONS OF SEISMIC DESIGN CRITERIA AND DURABILITY

ZHAO Xinli; HE Haoxiang; YAN Weiming; CHENG Shitao

doi:10.13204/j.gyjzG21020604

Volume 51 Issue 9

Jan. 2022

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ZHAO Xinli, HE Haoxiang, YAN Weiming, CHENG Shitao. SEISMIC VULNERABILITY ASSESSMENTS FOR OLD BUILDINGS BY DIFFERENT VERSIONS OF SEISMIC DESIGN CRITERIA AND DURABILITY[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 113-120,201. doi: 10.13204/j.gyjzG21020604

Citation:

ZHAO Xinli, HE Haoxiang, YAN Weiming, CHENG Shitao. SEISMIC VULNERABILITY ASSESSMENTS FOR OLD BUILDINGS BY DIFFERENT VERSIONS OF SEISMIC DESIGN CRITERIA AND DURABILITY[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 113-120,201. doi: 10.13204/j.gyjzG21020604

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SEISMIC VULNERABILITY ASSESSMENTS FOR OLD BUILDINGS BY DIFFERENT VERSIONS OF SEISMIC DESIGN CRITERIA AND DURABILITY

doi: 10.13204/j.gyjzG21020604

Beijing Key Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China

Received Date: 2021-02-06
Available Online: 2022-01-11

Abstract

Abstract

In the current study of seismic vulnerability of old reinforced concrete-frame structure, the influence of different seismic design criteria and durability on the a seismic performance of structure is not considered together, and the damage indicator which characterizes the structural vulnerability has limitations in the threshold range and dynamic analysis. Hence, considering differences of structural performances caused by concrete carbonization and rebar corrosion, based on different versions of seismic design criteria, the seismic action value according to structures service time was adjusted, three typical five-story steel-concrete frame structures were built. The corresponding finite element models were constructed and the incremental dynamic time-history analysis was conducted. The differential ratio of elastic plastic dissipated energy and the maximum interstory drift were used to characterize the structural damage, then the seismic vulnerability was analyzed and compared. The results showed that the a seismic capacity of the designed structure had been significantly improved and the vulnerability had decreased to a certain extent conducted by the updated seismic criteria. The seismic vulnerability of the same structure first decreased and then increased due to concrete carbonation. The differential ratio of elastic plastic dissipated energy was better than the maximum interstory drift to characterize the seismic vulnerability of existing structures.
- old building structure,
- reinforced concrete structure,
- durability,
- seismic vulnerability,
- damage index,
- seismic action value

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References(22)

References

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