RESEARCH ON SEISMIC FRAGILITY OF MULTI-AGED RC SHEAR WALL STRUCTURES IN OFFSHORE ATMOSPHERIC ENVIRONMENT

QIN Qing; QIU Jisheng; ZHANG Chenghua; GUAN Xiao; HOU Piji

doi:10.13204/j.gyjzG19112606

Volume 50 Issue 12

Mar. 2021

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QIN Qing, QIU Jisheng, ZHANG Chenghua, GUAN Xiao, HOU Piji. RESEARCH ON SEISMIC FRAGILITY OF MULTI-AGED RC SHEAR WALL STRUCTURES IN OFFSHORE ATMOSPHERIC ENVIRONMENT[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 32-41. doi: 10.13204/j.gyjzG19112606

Citation:

QIN Qing, QIU Jisheng, ZHANG Chenghua, GUAN Xiao, HOU Piji. RESEARCH ON SEISMIC FRAGILITY OF MULTI-AGED RC SHEAR WALL STRUCTURES IN OFFSHORE ATMOSPHERIC ENVIRONMENT[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 32-41. doi: 10.13204/j.gyjzG19112606

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RESEARCH ON SEISMIC FRAGILITY OF MULTI-AGED RC SHEAR WALL STRUCTURES IN OFFSHORE ATMOSPHERIC ENVIRONMENT

doi: 10.13204/j.gyjzG19112606

School of Civil and Architecture Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

Received Date: 2020-04-22
Available Online: 2021-03-31

Abstract

Abstract

In the offshore atmospheric environment, the corrosion of steel bars will lead to the seismic behavior of shear wall structures degenerated. It is necessary to establish the seismic fragility model of corroded RC shear wall structures. The typical shear wall structure was taken as the research object. Based on PERFORM-3D, the corrosion of steel bars in the offshore atmosphere was mainly considered by the principle of material degradation, and the numerical models of RC shear wall structures were established by fiber model. Taking PGA as the intensity index of ground motion, 22 seismic waves were amplitude modulated, and the demand model parameters of typical structures corresponding to different layers with different ages were obtained. The performance index limit of multi-aged RC shear wall structures was defined, and the seismic fragility analysis of typical shear wall structures of different layers with different ages under the condition of seismic fortification intensity 8 was carried out respectively. The results showed that with the increase of age, the probability of exceeding limit state of typical shear wall structures with different layers increased.
- offshore atmospheric environment,
- multi-aged,
- corrosion,
- RC shear wall structure,
- seismic fragility

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