Seismic Fragility Curves of RC Elements Considering Its Corrosion Effects

Authors

  • K. Karthik Kumar  PG student, Department of Civil Engineering, PSNA College of Engineering and Technology, Dindigul, Tamil Nadu, India
  • C. Jayaguru  Professor, Department of Civil Engineering, PSNA College of Engineering and Technology, Dindigul, Tamil Nadu, India

Keywords:

Fragility curves, OpenSEES, RC elements, Corrosion, Analytical Study.

Abstract

Seismic fragility of reinforced concrete (RC) elements is defined as the conditional probability that the seismic demand exceeds the corresponding capacity, specified for a certain performance level, for given seismic intensity measures. However, the structural properties of RC elements change over time due to the onset of corrosion in the reinforcing steel. Therefore, seismic fragility of RC elements changes during an element lifetime. The study proposes a method to estimate the seismic fragility of corroding RC elements. Structural capacities are defined using probabilistic models for deformation and shear capacities of RC elements. Fragility curves are useful tools for showing the probability of structural damage due to earthquakes. The main aim of the study is to develop the fragility curves for RC elements considering its corrosion effects. Push over analyses and Incremental dynamic analyses were performed for those sample RC elements using the seismic intensity and the corrosion effects to determine the fragility and collapse capacity of each sample RC elements. OpenSEES is a software framework for creating models and analysis methods to simulate structural and geotechnical systems.

References

  1. Ji-Gang Xu , Gang Wu , De-Cheng Feng , Demitrios M. Cotsovos , Yong Lu (2020), ‘Seismic fragility analysis of shear-critical concrete columns considering.’Journal of Soil Dynamics and Earthquake Engineering Vol 134 (2020) 106165 No. 2. pp. 105-116.
  2. Do-Soo Moon, Young-Joo Lee, and Sangmok Lee (2018), ‘Fragility Analysis of Space Reinforced Concrete Frame Structures with Structural Irregularity in Plan’ Journal of Structural Engineering Vol. 10, No. 4. pp. 53-64.
  3. Ebrahim Afsar Dizaj, Rahmat Madandoust & Mohammad M. Kashani (2017), ‘Exploring the impact of chloride-induced corrosion on seismic damage limit states and residual capacity of reinforced concrete structures’. Journal of Structure and infrastructure Engineering Vol. 184, pp. 856-908.
  4. FengkunCui, HaonanZhang, A MichelGhosnb, YueXu (2017), ‘Seismic fragility analysis of deteriorating RC bridge substructures subject to marine chloride-induced corrosion’. Volume 2014, Article ID 210843. pp. 326-354.
  5. Nicholas C. Kyriakides and Stavroula J. Pantazopoulou, (2018), ‘Collapse Fragility Curves for RC Buildings Exhibiting Brittle Failure Modes’. Journal of Structural Engineering,Vol. 135, pp. 1177-1190.
  6. R.Couto, M.V. Requena, García, Cruz, R. Bento, A. Morales (2020), ‘Seismic capacity and vulnerability assessment considering ageing effects: case study—three local Portuguese RC buildings’. Journal of Earthquake Engineering Vol.167,pp 20–32.
  7. Sopna S Nair, Dr. G Hemalatha, Dr. P Muthupriya, (2017), ‘Vulnerability Assessment Using Fragility Curves’. ACI Structural Journal Vol.30 , pp. 803–813.
  8. Xingquan Guan , Henry Burton, Thomas Sabol (2020), ‘Python-based computational platform to automate seismic design, nonlinear structural model construction and analysis of steel moment resisting frames’ Engineering Structures Vol 224, pp. 111-199.

International Journal of Scientific Research in Science and Technology

Downloads

Published

2021-04-10

Issue

Volume 9, Issue 1, March-April-2021

Section

Research Articles

License

Copyright (c) IJSRST

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
K. Karthik Kumar, C. Jayaguru, " Seismic Fragility Curves of RC Elements Considering Its Corrosion Effects, International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 9, Issue 1, pp.1194-1203, March-April-2021.