Condition factor for seismic performance of deteriorated bridges

Date

2019-01-01

Author

Ocak, E. Canan
Caner, Alp

Metadata

Show full item record

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

Item Usage Stats

132
views

0
downloads

Bridges located at moderately or highly aggressive environments can be subjected to different levels of deterioration. Deterioration can be observed as cracking or spalling of concrete and corrosion of reinforcement. Among them corrosion of reinforcement is the main concern in capacity reduction due to loss of steel area and reduction in yield strength. Corrosion may even induce total collapse of bridge. In many cases, reinforced concrete bridges constructed over rivers exposed to reinforcement corrosion at splash zone of pier. Service life of these deteriorated bridges can be reduced significantly due to some loss in load carrying capacity which can also negatively affect the future seismic performance. Focus of these research has been given to investigate reduction of capacity in seismic behavior of bridges subjected to moderately aggressive environmental effects and to propose a condition factor to be used in future bridge analysis. Different deterioration models have been studied and a proper model has been modified to estimate loss in load capacity for a series of standard highway bridges. A condition factor, representing an equivalent deterioration, has been proposed for evaluation and design of bridges at moderately aggressive environment. Use of such condition factor in design can compensate future loss in capacity resulting some overdesign at early years of bridge.

Subject Keywords

Building and Construction

URI

https://hdl.handle.net/11511/42903

Journal

BRIDGE STRUCTURES

DOI

https://doi.org/10.3233/brs-190160

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Seismic performance of multisimple-span bridges retrofitted with link slabs Caner, Alp; Zia, P. (American Society of Civil Engineers (ASCE), 2002-03-01) During earthquakes multisimple-span bridges are vulnerable to span separation at their expansion joints. A common way of preventing unseating of spans is to have cable or rod restrainers that provide connections between adjacent spans. Alternatively, dislocation of the girders can be controlled with a link slab that is the continuous portion of the bridge deck between simple spans. Seismic retrofit with link slab should be more cost-effective than the existing methods when it is performed during redecking o...
Rating and reliability of existing bridges in a network Akgül, Ferhat (American Society of Civil Engineers (ASCE), 2003-11-01) Currently, the load rating is the method used by State DOTs for evaluating the safety and serviceability of existing bridges in the United States. In general, load rating of a bridge is evaluated when a maintenance, improvement work, change in strength of members, or addition of dead load alters the condition or capacity of the structure. The AASHTO LRFD specifications provide code provisions for prescribing an acceptable and uniform safety level for the design of bridge components. Once a bridge is designe...
Overlapping Lattice Modeling for concrete fracture simulations using sequentially linear analysis Aydın, Beyazıt Bestami; Tuncay, Kağan; Binici, Barış (Wiley, 2018-04-01) Modeling concrete fracture is important in order to uncover accurately the sources of distress which lead to the damage or failure of structures. Many different numerical approaches have been used in the past employing either a smeared or a discrete cracking approach. Those models have difficulty in capturing the local nature of cracking, as well as the direction of crack propagation. Lattice modeling and peridynamics (PD) are some of the more recent nonlocal fracture simulation tools which possess advantag...
Comparative Study on the Effect of Number of Girders on Live Load Distribution in Integral Abutment and Simply Supported Bridge Girders Yalcin, O. Fatih; Dicleli, Murat (SAGE Publications, 2013-06-01) In this study, the effect of the number of prestressed concrete girders on the distribution of live load effects among the girders of integral abutment bridges (IABs) and simply supported bridges (SSBs) is investigated. For this purpose, two and three dimensional finite element models (FEMs) of several single-span IABs and SSBs are built and analyzed. In the analyses, bridges with various superstructure properties, such as span length, girder type and size, slab thickness are considered. The finite element ...
Target damage level assessment for seismic performance evaluation of two-column reinforced concrete bridge bents Yilmaz, Taner; Caner, Alp (IOS Press, 2012-01-01) Displacement capacity verification analysis is usually used to evaluate the level of displacement at which structural elements reach their inelastic deformation capacities. In engineering practice, a modified version of displacement capacity analysis is used in the seismic performance assessment of bridge structures as an alternative to ductility and drift based approaches. In this seismic performance evaluation for a given target damage level, top bent displacement demand should not exceed a certain fracti...

Citation Formats

E. C. Ocak and A. Caner, “Condition factor for seismic performance of deteriorated bridges,” BRIDGE STRUCTURES, pp. 187–196, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42903.