Fragility Analysis of Typical Indian Box-girder Concrete Bridges
Keywords:
Concrete Bridge, Incremental Dynamic Analysis, Damage Limit State, Evaluation, Fragility CurveAbstract
Performance-based earthquake engineering (PBEE) methodology has been widely developed during the past two decades, and has become a key approach for seismic analysis and design. Yet such an approach has not been implemented in Indian structural codes. Therefore, further research is required to develop a domestic approach for Indian applications. In this paper, the seismic capacity of a typical Box-girder concrete highway bridge designed as per Indian Standards is evaluated through a probabilistic method as well as nonlinear static analysis (pushover analysis) for substructure type of single-column and multi-column bents separately. Fragility curves are developed and used for evaluation purposes. These fragility curves represent the probability of structural damage due to various ground shakings. And more so they describe a relationship between ground motion and level of damage. This paper presents the method as well as the results in the form of vulnerability and structural reliability relations based on two damage functions.
References
- MCEER, 1999b. Seismic Retrofitting Manuals for Highway Systems, Volume II: Seismic Evaluation and Retrofitting Manual for Highway Bridges. Multidisciplinary Center for Earthquake Engineering Research, Buffalo, New York,
- J. B. Mander, Fragility Curve Development for Assessing the Seismic Vulnerability of Highway Bridges. MCEER Highway Project/FHWA National Institute of Building Sciences (NIBS), 1999; 1-10.
- W. I. Liao and C. H. Loh. Preliminary Study on the Fragility Curves for Highway Bridges in Taiwan. Journal of the Chinese Institute of Engineers 2004; 27(3), 367-375.
- SAP2000, Integrated Software for Structural Analysis and Design, Version14.0. 2013; Computers & Structures, Inc., Berkeley, California.
- D. Vamvatsikos and C. A. Cornell. Incremental dynamic analysis. Earthquake Engineering and Structural Dynamics, 2002; 31(3), 491-514.
- IDARC-2D-7.0 Computer Program 2009; Department of Civil Engineering, The State University of New York at Buffalo.
- B. G. Nielson. Analytical Fragility Curves for Highway Bridges in Moderate Seismic Zones, PhD Thesis 2005; Georgia Institute of Technology, GA, USA.
- E. Choi. Seismic Analysis and Retrofit of Mid-America Bridges, PhD Thesis, 2002; Georgia Institute of Technology, GA, USA.
- M. M.Maniyar and R. K.Khare . Selection of ground motion for performing incremental dynamic analysis of existing reinforced concrete buildings in India. Current Science 2011; 100(5): 701-713.
- B. G. Nielson and R. DesRoches. Seismic fragility methodology for highway bridges using a component level approach, Earthquake Engineering & Structural Dynamics 2007; 36(6) 823-839.
- S. H. Kim and M. Shinozuka. Development of fragility curves of bridges retrofitted by column jacketing. Journal of Probabilistic Engineering Mechanics 2004; 19, 105-112
Downloads
Published
Issue
Section
License
Copyright (c) IJSRSET
This work is licensed under a Creative Commons Attribution 4.0 International License.