4th International Engineering Conference on Developments in Civil & Computer Engineering Applications (IEC2018)
Title: INVESTIGATION OF SEISMIC PERFORMANCE AND RELIABILITY ANALYSIS OF PRESTRESSED REINFORCED CONCRETE BRIDGES
Authors: M. Hosseinpour, M.Celikag, H. AkbarzadehBengar
DOI: 10.23918/iec2018.04
Abstract: Given the vital importance of bridges in life arteries, safety of these structures against destructive agents such as earthquake is of utmost importance. Using pre-stressed columns in bridges will improve their seismic response, because these columns have high displacement capacity during earthquake and a small permanent displacement after earthquake. Therefore, the need for further study on these structures is felt more than ever. In this paper, firstly, pre- stressed columns were analyzed under reciprocating static load using OpenSees software and results show that pre-stressing bridge columns will improve the quasi-static response of columns and column section bearing. Below, we examine the reliability analysis of pre-stressed bridge samples against force of the earthquake and the effect of different random variables on reliability of bridge. The results show that structural damping and earthquake magnitude have a significant effect on reliability of bridges. Changes in characteristic strength of concrete at ultimate limit and mean resistance of section, effect significantly on reliability of bridge structure.
Keywords: Concrete Bridge, Pre-stressed concrete structures, seismic performance, finite element analysis, Structural reliability.
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