Main Article Content
THE DAMAGE INDEX IS USUALLY APPLIED TO EVALUATE THE DAMAGE STATES OF BRIDGE STRUCTURES, WHICH IS THE BASIS OF STRUCTURAL FRAGILITY STUDY. THE PRESENT STUDY ANALYTICALLY INVESTIGATES THE SEISMIC DAMAGE INDEX OF THE PREFABRICATED SEGMENTAL BRIDGE COLUMNS (PSBC) UNDER CYCLIC LOADING, IN ORDER TO ANALYZE THE SEISMIC FRAGILITY OF THE BRIDGE STRUCTURES WITH PSBC. BASED ON THE PREVIOUS PSEUDO-STATIC EXPERIMENTS, DIFFERENT DAMAGE STATES CHARACTERISTICS OF THE MONOLITHIC CAST-IN-PLACE BRIDGE COLUMNS (MCBC) AND THE PSBC ARE DISCUSSED AND ANALYZED. THEN, THE LIMIT-STATE CAPACITIES FOR EACH DAMAGE STATE OF THE PSBC ARE PROPOSED BY TAKING FOUR PARAMETERS INTO CONSIDERATION, WHICH ARE THE COMPRESSIVE STRAIN OF CONCRETE, THE TENSILE STRAIN OF STEEL, THE TENSIONING LEVEL AND THE RESIDUAL DISPLACEMENT. THE NONLINEAR FINITE ELEMENT MODELS OF THE PSBC ARE DEVELOPED BY OPENSEES. A MODIFIED FORMULA FOR DAMAGE INDEX FOR THE PSBC IS ESTABLISHED BASED ON THE LIMIT-STATE CAPACITIES AND THE RESULTS OBTAINED FROM THE MODELS. THE DAMAGE INDEX FOR THE PSBC IS THEN OBTAINED. A SIMILAR EXPERIMENTAL BRIDGE COLUMN IS USED TO VERIFY THE DAMAGE INDEX WITH THE SAME ANALYTICAL METHOD. THE RESULTS INDICATE THAT THE DATA OBTAINED FROM THE COLUMNS NUMERICAL MODELS SHOW GOOD AGREEMENT WITH THE EXPERIMENTAL RESPONSE OF THE COLUMNS. THE DERIVED DAMAGE INDEX FORMULA OF THE PSBC IS REASONABLE AND CAN BE FURTHER APPLIED. THE MAXIMUM ERROR BETWEEN THE PROPOSED DAMAGE INDEX AND THAT OBTAINED IN THE VERIFIED CASE IS 20.3%. THE PROPOSED METHOD IN THIS PAPER FOR DEVELOPING THE DAMAGE INDEX OF THE PSBC CAN BE USED IN THE SEISMIC VULNERABILITY ANALYSIS ASSESSMENT OF THE BRIDGE STRUCTURES WITH PREFABRICATED SEGMENTAL COLUMNS.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).