Proposed Input Energy-Based Damage Index for RC Bridge Piers
In this paper, a new damage index is proposed for RC bridge piers using the concept of earthquake input energy distribution in a structural system. The damage index was defined as the ratio of the hysteretic energy to the earthquake input energy to take into account the cumulative effects of stiffness degradation, inelastic deformation, and material nonlinearities throughout the loading history. A damage-assessment method was also developed in accordance with material strain. For this purpose, a set of circular RC bridge piers tested under cyclic/seismic loadings was simulated to calibrate the reliability of the proposed damage index and strain-based damage limit states. The results confirmed the ability of the damage index to predict the damage levels of piers under cyclic and seismic loading. The damage index was also compared to some existing damage indices. The comparison showed that the proposed damage index is a relatively simple and practical approach that can provide a reasonably gradual progression of damage throughout the loading history more convincingly than other damage models.
- Record URL:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
- © 2018 American Society of Civil Engineers.
- Mahboubi, Shima
- Shiravand, Mahmoud R
- Publication Date: 2019-1
- Media Type: Web
- Pagination: Content ID 04018103
- TRT Terms: Bridge piers; Earthquake resistant structures; Mathematical models; Reinforced concrete; Repeated loads; Structural deterioration and defects; Structural health monitoring
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Materials;
- Accession Number: 01685936
- Record Type: Publication
- Files: TRIS, ASCE
- Created Date: Oct 23 2018 3:02PM